Merge pull request #315 from prometheus/refactor/client/new-model

Migrate Prometheus to Use Client-Side Model

Makefile

@@ -17,8 +17,8 @@ include Makefile.INCLUDE
 
 all: binary test
 
-$(GOCC): build/cache/$(GOPKG)
-	tar -C build/root -xzf $<
+$(GOCC): $(BUILD_PATH)/cache/$(GOPKG) source_path
+	tar -C $(BUILD_PATH)/root -xzf $<
 	touch $@
 
 advice:
@@ -28,14 +28,14 @@ binary: build
 
 build: config dependencies model preparation tools web
 	$(GO) build -o prometheus $(BUILDFLAGS) .
-	cp prometheus build/package/prometheus
-	rsync -av build/root/lib/ build/package/lib/
+	cp prometheus $(BUILD_PATH)/package/prometheus
+	rsync -av --delete $(BUILD_PATH)/root/lib/ $(BUILD_PATH)/package/lib/
 
-build/cache/$(GOPKG):
+$(BUILD_PATH)/cache/$(GOPKG):
 	curl -o $@ http://go.googlecode.com/files/$(GOPKG)
 
 clean:
-	$(MAKE) -C build clean
+	$(MAKE) -C $(BUILD_PATH) clean
 	$(MAKE) -C tools clean
 	$(MAKE) -C web clean
 	rm -rf $(TEST_ARTIFACTS)
@@ -53,16 +53,16 @@ documentation: search_index
 	godoc -http=:6060 -index -index_files='search_index'
 
 format:
-	find . -iname '*.go' | egrep -v "^./build/|generated|\.(l|y)\.go" | xargs -n1 $(GOFMT) -w -s=true
+	find . -iname '*.go' | egrep -v "^\./\.build|./generated|\.(l|y)\.go" | xargs -n1 $(GOFMT) -w -s=true
 
 model: dependencies preparation
 	$(MAKE) -C model
 
 preparation: $(GOCC) source_path
-	$(MAKE) -C build
+	$(MAKE) -C $(BUILD_PATH)
 
 race_condition_binary: build
-	CGO_CFLAGS="-I$(PWD)/build/root/include" CGO_LDFLAGS="-L$(PWD)/build/root/lib" $(GO) build -race -o prometheus.race $(BUILDFLAGS) .
+	CGO_CFLAGS="-I$(BUILD_PATH)/root/include" CGO_LDFLAGS="-L$(BUILD_PATH)/root/lib" $(GO) build -race -o prometheus.race $(BUILDFLAGS) .
 
 race_condition_run: race_condition_binary
 	./prometheus.race $(ARGUMENTS)
@@ -83,13 +83,16 @@ source_path:
 	[ -d "$(FULL_GOPATH)" ]
 
 test: build
-	$(GOENV) find . -maxdepth 1 -mindepth 1 -type d -and -not -path ./build -exec $(GOCC) test {}/... $(GO_TEST_FLAGS) \;
+	$(GOENV) find . -maxdepth 1 -mindepth 1 -type d -and -not -path $(BUILD_PATH) -exec $(GOCC) test {}/... $(GO_TEST_FLAGS) \;
 	$(GO) test $(GO_TEST_FLAGS)
 
 tools: dependencies preparation
 	$(MAKE) -C tools
 
+update:
+	$(GO) get -d
+
 web: config dependencies model preparation
 	$(MAKE) -C web
 
-.PHONY: advice binary build clean config dependencies documentation format model package preparation race_condition_binary race_condition_run run search_index source_path test tools
+.PHONY: advice binary build clean config dependencies documentation format model package preparation race_condition_binary race_condition_run run search_index source_path test tools update

Makefile.INCLUDE

@@ -28,17 +28,19 @@ endif
 OS=$(shell uname)
 ARCH=$(shell uname -m)
 
+BUILD_PATH = $(PWD)/.build
+
 GO_VERSION := 1.1
-GOOS		= $(subst Darwin,darwin,$(subst Linux,linux,$(OS)))
-GOARCH		= $(subst x86_64,amd64,$(ARCH))
-GOPKG		= go$(GO_VERSION).$(GOOS)-$(GOARCH).tar.gz
-GOROOT		= $(PWD)/build/root/go
-GOPATH		= $(PWD)/build/root/gopath
-GOCC		= $(GOROOT)/bin/go
-TMPDIR		= /tmp
-GOENV		= TMPDIR=$(TMPDIR) GOROOT=$(GOROOT) GOPATH=$(GOPATH)
-GO		= $(GOENV) $(GOCC)
-GOFMT		= $(GOROOT)/bin/gofmt
+GOOS		   = $(subst Darwin,darwin,$(subst Linux,linux,$(OS)))
+GOARCH		 = $(subst x86_64,amd64,$(ARCH))
+GOPKG		   = go$(GO_VERSION).$(GOOS)-$(GOARCH).tar.gz
+GOROOT		 = $(BUILD_PATH)/root/go
+GOPATH		 = $(BUILD_PATH)/root/gopath
+GOCC		   = $(GOROOT)/bin/go
+TMPDIR		 = /tmp
+GOENV		   = TMPDIR=$(TMPDIR) GOROOT=$(GOROOT) GOPATH=$(GOPATH)
+GO	       = $(GOENV) $(GOCC)
+GOFMT		   = $(GOROOT)/bin/gofmt
 
 LEVELDB_VERSION := 1.12.0
 PROTOCOL_BUFFERS_VERSION := 2.5.0
@@ -48,7 +50,7 @@ UNAME := $(shell uname)
 FULL_GOPATH := $(GOPATH)/src/github.com/prometheus/prometheus
 FULL_GOPATH_BASE := $(GOPATH)/src/github.com/prometheus
 
-export PREFIX=$(PWD)/build/root
+export PREFIX=$(BUILD_PATH)/root
 
 export LOCAL_BINARIES=$(PREFIX)/bin
 

main.go

@@ -15,32 +15,31 @@ package main
 
 import (
 	"flag"
-	"github.com/prometheus/prometheus/config"
-	"github.com/prometheus/prometheus/retrieval"
-	"github.com/prometheus/prometheus/retrieval/format"
-	"github.com/prometheus/prometheus/rules"
-	"github.com/prometheus/prometheus/storage/metric"
-	"github.com/prometheus/prometheus/storage/raw/leveldb"
-	"github.com/prometheus/prometheus/web"
-	"github.com/prometheus/prometheus/web/api"
 	"log"
 	"os"
 	"os/signal"
 	"sync"
 	"time"
+
+	"github.com/prometheus/client_golang/extraction"
+
+	"github.com/prometheus/prometheus/config"
+	"github.com/prometheus/prometheus/retrieval"
+	"github.com/prometheus/prometheus/rules"
+	"github.com/prometheus/prometheus/storage/metric"
+	"github.com/prometheus/prometheus/storage/raw/leveldb"
+	"github.com/prometheus/prometheus/web"
+	"github.com/prometheus/prometheus/web/api"
 )
 
-const (
-	deletionBatchSize = 100
-)
+const deletionBatchSize = 100
 
 // Commandline flags.
 var (
 	printVersion                 = flag.Bool("version", false, "print version information")
 	configFile                   = flag.String("configFile", "prometheus.conf", "Prometheus configuration file name.")
 	metricsStoragePath           = flag.String("metricsStoragePath", "/tmp/metrics", "Base path for metrics storage.")
-	scrapeResultsQueueCapacity   = flag.Int("scrapeResultsQueueCapacity", 4096, "The size of the scrape results queue.")
-	ruleResultsQueueCapacity     = flag.Int("ruleResultsQueueCapacity", 4096, "The size of the rule results queue.")
+	samplesQueueCapacity         = flag.Int("samplesQueueCapacity", 4096, "The size of the unwritten samples queue.")
 	concurrentRetrievalAllowance = flag.Int("concurrentRetrievalAllowance", 15, "The number of concurrent metrics retrieval requests allowed.")
 	diskAppendQueueCapacity      = flag.Int("queue.diskAppendCapacity", 1000000, "The size of the queue for items that are pending writing to disk.")
 	memoryAppendQueueCapacity    = flag.Int("queue.memoryAppendCapacity", 10000, "The size of the queue for items that are pending writing to memory.")
@@ -76,8 +75,7 @@ type prometheus struct {
 	databaseStates           chan []leveldb.DatabaseState
 	stopBackgroundOperations chan bool
 
-	ruleResults   chan *rules.Result
-	scrapeResults chan format.Result
+	unwrittenSamples chan *extraction.Result
 
 	storage *metric.TieredStorage
 }
@@ -198,8 +196,7 @@ func main() {
 		log.Fatalln("Nil tiered storage.")
 	}
 
-	scrapeResults := make(chan format.Result, *scrapeResultsQueueCapacity)
-	ruleResults := make(chan *rules.Result, *ruleResultsQueueCapacity)
+	unwrittenSamples := make(chan *extraction.Result, *samplesQueueCapacity)
 	curationState := make(chan metric.CurationState, 1)
 	databaseStates := make(chan []leveldb.DatabaseState, 1)
 	// Coprime numbers, fool!
@@ -209,11 +206,11 @@ func main() {
 	deletionTimer := time.NewTicker(*deleteInterval)
 
 	// Queue depth will need to be exposed
-	targetManager := retrieval.NewTargetManager(scrapeResults, *concurrentRetrievalAllowance)
+	targetManager := retrieval.NewTargetManager(unwrittenSamples, *concurrentRetrievalAllowance)
 	targetManager.AddTargetsFromConfig(conf)
 
 	// Queue depth will need to be exposed
-	ruleManager := rules.NewRuleManager(ruleResults, conf.EvaluationInterval(), ts)
+	ruleManager := rules.NewRuleManager(unwrittenSamples, conf.EvaluationInterval(), ts)
 	err = ruleManager.AddRulesFromConfig(conf)
 	if err != nil {
 		log.Fatalf("Error loading rule files: %v", err)
@@ -259,7 +256,7 @@ func main() {
 		AlertsHandler:    alertsHandler,
 	}
 
-	prometheus := prometheus{
+	prometheus := &prometheus{
 		bodyCompactionTimer: bodyCompactionTimer,
 		headCompactionTimer: headCompactionTimer,
 		tailCompactionTimer: tailCompactionTimer,
@@ -271,8 +268,7 @@ func main() {
 		curationState:  curationState,
 		databaseStates: databaseStates,
 
-		ruleResults:   ruleResults,
-		scrapeResults: scrapeResults,
+		unwrittenSamples: unwrittenSamples,
 
 		stopBackgroundOperations: make(chan bool, 1),
 
@@ -343,17 +339,9 @@ func main() {
 	}()
 
 	// TODO(all): Migrate this into prometheus.serve().
-	for {
-		select {
-		case scrapeResult := <-scrapeResults:
-			if scrapeResult.Err == nil {
-				ts.AppendSamples(scrapeResult.Samples)
-			}
-
-		case ruleResult := <-ruleResults:
-			if ruleResult.Err == nil {
-				ts.AppendSamples(ruleResult.Samples)
-			}
+	for block := range unwrittenSamples {
+		if block.Err == nil {
+			ts.AppendSamples(block.Samples)
 		}
 	}
 }

model/curation.go

@@ -1,103 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package model
-
-import (
-	"bytes"
-	"code.google.com/p/goprotobuf/proto"
-	"fmt"
-	dto "github.com/prometheus/prometheus/model/generated"
-	"time"
-)
-
-// CurationRemark provides a representation of dto.CurationValue with associated
-// business logic methods attached to it to enhance code readability.
-type CurationRemark struct {
-	LastCompletionTimestamp time.Time
-}
-
-// OlderThan answers whether this CurationRemark is older than the provided
-// cutOff time.
-func (c CurationRemark) OlderThan(t time.Time) bool {
-	return c.LastCompletionTimestamp.Before(t)
-}
-
-// Equal answers whether the two CurationRemarks are equivalent.
-func (c CurationRemark) Equal(o CurationRemark) bool {
-	return c.LastCompletionTimestamp.Equal(o.LastCompletionTimestamp)
-}
-
-func (c CurationRemark) String() string {
-	return fmt.Sprintf("Last curated at %s", c.LastCompletionTimestamp)
-}
-
-// ToDTO generates the dto.CurationValue representation of this.
-func (c CurationRemark) ToDTO() *dto.CurationValue {
-	return &dto.CurationValue{
-		LastCompletionTimestamp: proto.Int64(c.LastCompletionTimestamp.Unix()),
-	}
-}
-
-// NewCurationRemarkFromDTO builds CurationRemark from the provided
-// dto.CurationValue object.
-func NewCurationRemarkFromDTO(d *dto.CurationValue) CurationRemark {
-	return CurationRemark{
-		LastCompletionTimestamp: time.Unix(*d.LastCompletionTimestamp, 0).UTC(),
-	}
-}
-
-// CurationKey provides a representation of dto.CurationKey with associated
-// business logic methods attached to it to enhance code readability.
-type CurationKey struct {
-	Fingerprint              *Fingerprint
-	ProcessorMessageRaw      []byte
-	ProcessorMessageTypeName string
-	IgnoreYoungerThan        time.Duration
-}
-
-// Equal answers whether the two CurationKeys are equivalent.
-func (c CurationKey) Equal(o CurationKey) bool {
-	switch {
-	case !c.Fingerprint.Equal(o.Fingerprint):
-		return false
-	case bytes.Compare(c.ProcessorMessageRaw, o.ProcessorMessageRaw) != 0:
-		return false
-	case c.ProcessorMessageTypeName != o.ProcessorMessageTypeName:
-		return false
-	case c.IgnoreYoungerThan != o.IgnoreYoungerThan:
-		return false
-	}
-
-	return true
-}
-
-// ToDTO generates a dto.CurationKey representation of this.
-func (c CurationKey) ToDTO() *dto.CurationKey {
-	return &dto.CurationKey{
-		Fingerprint:              c.Fingerprint.ToDTO(),
-		ProcessorMessageRaw:      c.ProcessorMessageRaw,
-		ProcessorMessageTypeName: proto.String(c.ProcessorMessageTypeName),
-		IgnoreYoungerThan:        proto.Int64(int64(c.IgnoreYoungerThan)),
-	}
-}
-
-// NewCurationKeyFromDTO builds CurationKey from the provided dto.CurationKey.
-func NewCurationKeyFromDTO(d *dto.CurationKey) CurationKey {
-	return CurationKey{
-		Fingerprint:              NewFingerprintFromDTO(d.Fingerprint),
-		ProcessorMessageRaw:      d.ProcessorMessageRaw,
-		ProcessorMessageTypeName: *d.ProcessorMessageTypeName,
-		IgnoreYoungerThan:        time.Duration(*d.IgnoreYoungerThan),
-	}
-}

model/dto.go

@@ -1,131 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package model
-
-import (
-	"code.google.com/p/goprotobuf/proto"
-	dto "github.com/prometheus/prometheus/model/generated"
-	"sort"
-	"time"
-)
-
-func SampleToMetricDTO(s *Sample) *dto.Metric {
-	labelLength := len(s.Metric)
-	labelNames := make([]string, 0, labelLength)
-
-	for labelName := range s.Metric {
-		labelNames = append(labelNames, string(labelName))
-	}
-
-	sort.Strings(labelNames)
-
-	labelSets := make([]*dto.LabelPair, 0, labelLength)
-
-	for _, labelName := range labelNames {
-		labelValue := s.Metric[LabelName(labelName)]
-		labelPair := &dto.LabelPair{
-			Name:  proto.String(string(labelName)),
-			Value: proto.String(string(labelValue)),
-		}
-
-		labelSets = append(labelSets, labelPair)
-	}
-
-	return &dto.Metric{
-		LabelPair: labelSets,
-	}
-}
-
-func MetricToDTO(m Metric) *dto.Metric {
-	metricLength := len(m)
-	labelNames := make([]string, 0, metricLength)
-
-	for labelName := range m {
-		labelNames = append(labelNames, string(labelName))
-	}
-
-	sort.Strings(labelNames)
-
-	labelSets := make([]*dto.LabelPair, 0, metricLength)
-
-	for _, labelName := range labelNames {
-		l := LabelName(labelName)
-		labelValue := m[l]
-		labelPair := &dto.LabelPair{
-			Name:  proto.String(string(labelName)),
-			Value: proto.String(string(labelValue)),
-		}
-
-		labelSets = append(labelSets, labelPair)
-	}
-
-	return &dto.Metric{
-		LabelPair: labelSets,
-	}
-}
-
-func LabelSetToDTOs(s *LabelSet) []*dto.LabelPair {
-	metricLength := len(*s)
-	labelNames := make([]string, 0, metricLength)
-
-	for labelName := range *s {
-		labelNames = append(labelNames, string(labelName))
-	}
-
-	sort.Strings(labelNames)
-
-	labelSets := make([]*dto.LabelPair, 0, metricLength)
-
-	for _, labelName := range labelNames {
-		l := LabelName(labelName)
-		labelValue := (*s)[l]
-		labelPair := &dto.LabelPair{
-			Name:  proto.String(string(labelName)),
-			Value: proto.String(string(labelValue)),
-		}
-
-		labelSets = append(labelSets, labelPair)
-	}
-
-	return labelSets
-}
-
-func LabelSetToDTO(s *LabelSet) *dto.LabelSet {
-	return &dto.LabelSet{
-		Member: LabelSetToDTOs(s),
-	}
-}
-
-func LabelNameToDTO(l *LabelName) *dto.LabelName {
-	return &dto.LabelName{
-		Name: proto.String(string(*l)),
-	}
-}
-
-func FingerprintToDTO(f *Fingerprint) *dto.Fingerprint {
-	return &dto.Fingerprint{
-		Signature: proto.String(f.ToRowKey()),
-	}
-}
-
-func SampleFromDTO(m *Metric, t *time.Time, v *dto.SampleValueSeries) *Sample {
-	s := &Sample{
-		Value:     SampleValue(*v.Value[0].Value),
-		Timestamp: *t,
-	}
-
-	s.Metric = *m
-
-	return s
-}

model/fingerprinting.go

@@ -1,207 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package model
-
-import (
-	"code.google.com/p/goprotobuf/proto"
-	"encoding/binary"
-	"fmt"
-	dto "github.com/prometheus/prometheus/model/generated"
-	"hash/fnv"
-	"sort"
-	"strconv"
-	"strings"
-)
-
-const (
-	// rowKeyDelimiter is used to separate formatted versions of a metric's row
-	// key.
-	rowKeyDelimiter = "-"
-)
-
-// Builds a Fingerprint from a row key.
-func NewFingerprintFromRowKey(rowKey string) *Fingerprint {
-	components := strings.Split(rowKey, rowKeyDelimiter)
-	hash, err := strconv.ParseUint(components[0], 10, 64)
-	if err != nil {
-		panic(err)
-	}
-	labelMatterLength, err := strconv.ParseUint(components[2], 10, 0)
-	if err != nil {
-		panic(err)
-	}
-
-	return &Fingerprint{
-		hash: hash,
-		firstCharacterOfFirstLabelName: components[1],
-		labelMatterLength:              uint(labelMatterLength),
-		lastCharacterOfLastLabelValue:  components[3],
-	}
-}
-
-// Builds a Fingerprint from a datastore entry.
-func NewFingerprintFromDTO(f *dto.Fingerprint) *Fingerprint {
-	return NewFingerprintFromRowKey(*f.Signature)
-}
-
-// Decomposes a Metric into a Fingerprint.
-func NewFingerprintFromMetric(metric Metric) *Fingerprint {
-	labelLength := len(metric)
-	labelNames := make([]string, 0, labelLength)
-
-	for labelName := range metric {
-		labelNames = append(labelNames, string(labelName))
-	}
-
-	sort.Strings(labelNames)
-
-	summer := fnv.New64a()
-	firstCharacterOfFirstLabelName := ""
-	lastCharacterOfLastLabelValue := ""
-	labelMatterLength := 0
-
-	for i, labelName := range labelNames {
-		labelValue := metric[LabelName(labelName)]
-		labelNameLength := len(labelName)
-		labelValueLength := len(labelValue)
-		labelMatterLength += labelNameLength + labelValueLength
-
-		if i == 0 {
-			firstCharacterOfFirstLabelName = labelName[0:1]
-		}
-		if i == labelLength-1 {
-			lastCharacterOfLastLabelValue = string(labelValue[labelValueLength-1 : labelValueLength])
-		}
-
-		summer.Write([]byte(labelName))
-		summer.Write([]byte(reservedDelimiter))
-		summer.Write([]byte(labelValue))
-	}
-
-	return &Fingerprint{
-		firstCharacterOfFirstLabelName: firstCharacterOfFirstLabelName,
-		hash:                          binary.LittleEndian.Uint64(summer.Sum(nil)),
-		labelMatterLength:             uint(labelMatterLength % 10),
-		lastCharacterOfLastLabelValue: lastCharacterOfLastLabelValue,
-	}
-}
-
-// A simplified representation of an entity.
-type Fingerprint struct {
-	// A hashed representation of the underyling entity.  For our purposes, FNV-1A
-	// 64-bit is used.
-	hash                           uint64
-	firstCharacterOfFirstLabelName string
-	labelMatterLength              uint
-	lastCharacterOfLastLabelValue  string
-}
-
-func (f *Fingerprint) String() string {
-	return f.ToRowKey()
-}
-
-// Transforms the Fingerprint into a database row key.
-func (f *Fingerprint) ToRowKey() string {
-	return strings.Join([]string{fmt.Sprintf("%020d", f.hash), f.firstCharacterOfFirstLabelName, fmt.Sprint(f.labelMatterLength), f.lastCharacterOfLastLabelValue}, rowKeyDelimiter)
-}
-
-func (f *Fingerprint) ToDTO() *dto.Fingerprint {
-	return &dto.Fingerprint{
-		Signature: proto.String(f.ToRowKey()),
-	}
-}
-
-func (f *Fingerprint) Hash() uint64 {
-	return f.hash
-}
-
-func (f *Fingerprint) FirstCharacterOfFirstLabelName() string {
-	return f.firstCharacterOfFirstLabelName
-}
-
-func (f *Fingerprint) LabelMatterLength() uint {
-	return f.labelMatterLength
-}
-
-func (f *Fingerprint) LastCharacterOfLastLabelValue() string {
-	return f.lastCharacterOfLastLabelValue
-}
-
-func (f *Fingerprint) Less(o *Fingerprint) bool {
-	if f.hash < o.hash {
-		return true
-	}
-	if f.hash > o.hash {
-		return false
-	}
-
-	if f.firstCharacterOfFirstLabelName < o.firstCharacterOfFirstLabelName {
-		return true
-	}
-	if f.firstCharacterOfFirstLabelName > o.firstCharacterOfFirstLabelName {
-		return false
-	}
-
-	if f.labelMatterLength < o.labelMatterLength {
-		return true
-	}
-	if f.labelMatterLength > o.labelMatterLength {
-		return false
-	}
-
-	if f.lastCharacterOfLastLabelValue < o.lastCharacterOfLastLabelValue {
-		return true
-	}
-	if f.lastCharacterOfLastLabelValue > o.lastCharacterOfLastLabelValue {
-		return false
-	}
-	return false
-}
-
-func (f *Fingerprint) Equal(o *Fingerprint) (equal bool) {
-	equal = f.Hash() == o.Hash()
-	if !equal {
-		return
-	}
-
-	equal = f.FirstCharacterOfFirstLabelName() == o.FirstCharacterOfFirstLabelName()
-	if !equal {
-		return
-	}
-
-	equal = f.LabelMatterLength() == o.LabelMatterLength()
-	if !equal {
-		return
-	}
-
-	equal = f.LastCharacterOfLastLabelValue() == o.LastCharacterOfLastLabelValue()
-
-	return
-}
-
-// Represents a collection of Fingerprint subject to a given natural sorting
-// scheme.
-type Fingerprints []*Fingerprint
-
-func (f Fingerprints) Len() int {
-	return len(f)
-}
-
-func (f Fingerprints) Less(i, j int) bool {
-	return f[i].Less(f[j])
-}
-
-func (f Fingerprints) Swap(i, j int) {
-	f[i], f[j] = f[j], f[i]
-}

model/fingerprinting_test.go

@@ -1,104 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package model
-
-import (
-	"runtime"
-	"testing"
-)
-
-func TestFingerprintComparison(t *testing.T) {
-	fingerprints := []*Fingerprint{
-		{
-			hash: 0,
-			firstCharacterOfFirstLabelName: "b",
-			labelMatterLength:              1,
-			lastCharacterOfLastLabelValue:  "b",
-		},
-		{
-			hash: 1,
-			firstCharacterOfFirstLabelName: "a",
-			labelMatterLength:              0,
-			lastCharacterOfLastLabelValue:  "a",
-		},
-		{
-			hash: 1,
-			firstCharacterOfFirstLabelName: "a",
-			labelMatterLength:              1000,
-			lastCharacterOfLastLabelValue:  "b",
-		},
-		{
-			hash: 1,
-			firstCharacterOfFirstLabelName: "b",
-			labelMatterLength:              0,
-			lastCharacterOfLastLabelValue:  "a",
-		},
-		{
-			hash: 1,
-			firstCharacterOfFirstLabelName: "b",
-			labelMatterLength:              1,
-			lastCharacterOfLastLabelValue:  "a",
-		},
-		{
-			hash: 1,
-			firstCharacterOfFirstLabelName: "b",
-			labelMatterLength:              1,
-			lastCharacterOfLastLabelValue:  "b",
-		},
-	}
-	for i := range fingerprints {
-		if i == 0 {
-			continue
-		}
-
-		if !fingerprints[i-1].Less(fingerprints[i]) {
-			t.Errorf("%d expected %s < %s", i, fingerprints[i-1], fingerprints[i])
-		}
-	}
-}
-
-func BenchmarkFingerprinting(b *testing.B) {
-	b.StopTimer()
-	fps := []*Fingerprint{
-		{
-			hash: 0,
-			firstCharacterOfFirstLabelName: "a",
-			labelMatterLength:              2,
-			lastCharacterOfLastLabelValue:  "z",
-		},
-		{
-			hash: 0,
-			firstCharacterOfFirstLabelName: "a",
-			labelMatterLength:              2,
-			lastCharacterOfLastLabelValue:  "z",
-		},
-	}
-	for i := 0; i < 10; i++ {
-		fps[0].Less(fps[1])
-	}
-	b.Logf("N: %v", b.N)
-	b.StartTimer()
-
-	var pre runtime.MemStats
-	runtime.ReadMemStats(&pre)
-
-	for i := 0; i < b.N; i++ {
-		fps[0].Less(fps[1])
-	}
-
-	var post runtime.MemStats
-	runtime.ReadMemStats(&post)
-
-	b.Logf("allocs: %d items: ", post.TotalAlloc-pre.TotalAlloc)
-}

model/labelname.go

@@ -1,64 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package model
-
-import (
-	"strings"
-)
-
-const (
-	// The label name indicating the metric name of a timeseries.
-	MetricNameLabel = LabelName("name")
-	// The label name indicating the job from which a timeseries was scraped.
-	JobLabel = LabelName("job")
-	// The label name indicating the instance from which a timeseries was scraped.
-	InstanceLabel = LabelName("instance")
-	// The label name prefix to prepend if a synthetic label is already present
-	// in the exported metrics.
-	ExporterLabelPrefix = LabelName("exporter_")
-	// The metric name for the synthetic health variable.
-	ScrapeHealthMetricName = LabelValue("up")
-	// The metric name for synthetic alert timeseries.
-	AlertMetricName = LabelValue("ALERTS")
-	// The label name indicating the name of an alert.
-	AlertNameLabel = LabelName("alertname")
-	// The label name indicating the state of an alert.
-	AlertStateLabel = LabelName("alertstate")
-)
-
-// A LabelName is a key for a LabelSet or Metric.  It has a value associated
-// therewith.
-type LabelName string
-
-type LabelNames []LabelName
-
-func (l LabelNames) Len() int {
-	return len(l)
-}
-
-func (l LabelNames) Less(i, j int) bool {
-	return l[i] < l[j]
-}
-
-func (l LabelNames) Swap(i, j int) {
-	l[i], l[j] = l[j], l[i]
-}
-
-func (l LabelNames) String() string {
-	labelStrings := make([]string, 0, len(l))
-	for _, label := range l {
-		labelStrings = append(labelStrings, string(label))
-	}
-	return strings.Join(labelStrings, ", ")
-}

model/labelname_test.go

@@ -1,56 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package model
-
-import (
-	"github.com/prometheus/prometheus/utility/test"
-	"sort"
-	"testing"
-)
-
-func testLabelNames(t test.Tester) {
-	var scenarios = []struct {
-		in  LabelNames
-		out LabelNames
-	}{
-		{
-			in:  LabelNames{"ZZZ", "zzz"},
-			out: LabelNames{"ZZZ", "zzz"},
-		},
-		{
-			in:  LabelNames{"aaa", "AAA"},
-			out: LabelNames{"AAA", "aaa"},
-		},
-	}
-
-	for i, scenario := range scenarios {
-		sort.Sort(scenario.in)
-
-		for j, expected := range scenario.out {
-			if expected != scenario.in[j] {
-				t.Errorf("%d.%d expected %s, got %s", i, j, expected, scenario.in[j])
-			}
-		}
-	}
-}
-
-func TestLabelNames(t *testing.T) {
-	testLabelNames(t)
-}
-
-func BenchmarkLabelNames(b *testing.B) {
-	for i := 0; i < b.N; i++ {
-		testLabelNames(b)
-	}
-}

model/labelvalue.go

@@ -1,35 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package model
-
-import (
-	"sort"
-)
-
-// A LabelValue is an associated value for a LabelName.
-type LabelValue string
-
-type LabelValues []LabelValue
-
-func (l LabelValues) Len() int {
-	return len(l)
-}
-
-func (l LabelValues) Less(i, j int) bool {
-	return sort.StringsAreSorted([]string{string(l[i]), string(l[j])})
-}
-
-func (l LabelValues) Swap(i, j int) {
-	l[i], l[j] = l[j], l[i]
-}

model/labelvalue_test.go

@@ -1,56 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package model
-
-import (
-	"github.com/prometheus/prometheus/utility/test"
-	"sort"
-	"testing"
-)
-
-func testLabelValues(t test.Tester) {
-	var scenarios = []struct {
-		in  LabelValues
-		out LabelValues
-	}{
-		{
-			in:  LabelValues{"ZZZ", "zzz"},
-			out: LabelValues{"ZZZ", "zzz"},
-		},
-		{
-			in:  LabelValues{"aaa", "AAA"},
-			out: LabelValues{"AAA", "aaa"},
-		},
-	}
-
-	for i, scenario := range scenarios {
-		sort.Sort(scenario.in)
-
-		for j, expected := range scenario.out {
-			if expected != scenario.in[j] {
-				t.Errorf("%d.%d expected %s, got %s", i, j, expected, scenario.in[j])
-			}
-		}
-	}
-}
-
-func TestLabelValues(t *testing.T) {
-	testLabelValues(t)
-}
-
-func BenchmarkLabelValues(b *testing.B) {
-	for i := 0; i < b.N; i++ {
-		testLabelValues(b)
-	}
-}

model/metric.go

@@ -1,262 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package model
-
-import (
-	"bytes"
-	"code.google.com/p/goprotobuf/proto"
-	"fmt"
-	dto "github.com/prometheus/prometheus/model/generated"
-	"sort"
-	"strings"
-	"time"
-)
-
-const (
-	// XXX: Re-evaluate down the road.
-	reservedDelimiter = `"`
-)
-
-// A LabelSet is a collection of LabelName and LabelValue pairs.  The LabelSet
-// may be fully-qualified down to the point where it may resolve to a single
-// Metric in the data store or not.  All operations that occur within the realm
-// of a LabelSet can emit a vector of Metric entities to which the LabelSet may
-// match.
-type LabelSet map[LabelName]LabelValue
-
-// Helper function to non-destructively merge two label sets.
-func (l LabelSet) Merge(other LabelSet) LabelSet {
-	result := make(LabelSet, len(l))
-
-	for k, v := range l {
-		result[k] = v
-	}
-
-	for k, v := range other {
-		result[k] = v
-	}
-
-	return result
-}
-
-func (l LabelSet) String() string {
-	labelStrings := make([]string, 0, len(l))
-	for label, value := range l {
-		labelStrings = append(labelStrings, fmt.Sprintf("%s=%q", label, value))
-	}
-
-	switch len(labelStrings) {
-	case 0:
-		return ""
-	default:
-		sort.Strings(labelStrings)
-		return fmt.Sprintf("{%s}", strings.Join(labelStrings, ", "))
-	}
-}
-
-func (m Metric) String() string {
-	metricName, ok := m[MetricNameLabel]
-	if !ok {
-		panic("Tried to print metric without name")
-	}
-	labelStrings := make([]string, 0, len(m)-1)
-	for label, value := range m {
-		if label != MetricNameLabel {
-			labelStrings = append(labelStrings, fmt.Sprintf("%s=%q", label, value))
-		}
-	}
-
-	switch len(labelStrings) {
-	case 0:
-		return string(metricName)
-	default:
-		sort.Strings(labelStrings)
-		return fmt.Sprintf("%s{%s}", metricName, strings.Join(labelStrings, ", "))
-	}
-}
-
-func (l LabelSet) ToMetric() Metric {
-	metric := Metric{}
-	for label, value := range l {
-		metric[label] = value
-	}
-	return metric
-}
-
-func (m Metric) ToLabelSet() LabelSet {
-	labels := LabelSet{}
-	for label, value := range m {
-		labels[label] = value
-	}
-	return labels
-}
-
-// A Metric is similar to a LabelSet, but the key difference is that a Metric is
-// a singleton and refers to one and only one stream of samples.
-type Metric map[LabelName]LabelValue
-
-// A SampleValue is a representation of a value for a given sample at a given
-// time.
-type SampleValue float64
-
-func (s SampleValue) Equal(o SampleValue) bool {
-	return s == o
-}
-
-func (s SampleValue) ToDTO() *float64 {
-	return proto.Float64(float64(s))
-}
-
-func (v SampleValue) MarshalJSON() ([]byte, error) {
-	return []byte(fmt.Sprintf(`"%f"`, v)), nil
-}
-
-func (v SampleValue) String() string {
-	return fmt.Sprint(float64(v))
-}
-
-func (s SamplePair) MarshalJSON() ([]byte, error) {
-	return []byte(fmt.Sprintf("{\"Value\": \"%f\", \"Timestamp\": %d}", s.Value, s.Timestamp.Unix())), nil
-}
-
-type SamplePair struct {
-	Value     SampleValue
-	Timestamp time.Time
-}
-
-func (s SamplePair) Equal(o SamplePair) bool {
-	return s.Value.Equal(o.Value) && s.Timestamp.Equal(o.Timestamp)
-}
-
-func (s SamplePair) ToDTO() (out *dto.SampleValueSeries_Value) {
-	out = &dto.SampleValueSeries_Value{
-		Timestamp: proto.Int64(s.Timestamp.Unix()),
-		Value:     s.Value.ToDTO(),
-	}
-
-	return
-}
-
-func (s SamplePair) String() string {
-	return fmt.Sprintf("SamplePair at %s of %s", s.Timestamp, s.Value)
-}
-
-type Values []SamplePair
-
-func (v Values) Len() int {
-	return len(v)
-}
-
-func (v Values) Less(i, j int) bool {
-	return v[i].Timestamp.Before(v[j].Timestamp)
-}
-
-func (v Values) Swap(i, j int) {
-	v[i], v[j] = v[j], v[i]
-}
-
-// FirstTimeAfter indicates whether the first sample of a set is after a given
-// timestamp.
-func (v Values) FirstTimeAfter(t time.Time) bool {
-	return v[0].Timestamp.After(t)
-}
-
-// LastTimeBefore indicates whether the last sample of a set is before a given
-// timestamp.
-func (v Values) LastTimeBefore(t time.Time) bool {
-	return v[len(v)-1].Timestamp.Before(t)
-}
-
-// InsideInterval indicates whether a given range of sorted values could contain
-// a value for a given time.
-func (v Values) InsideInterval(t time.Time) bool {
-	switch {
-	case v.Len() == 0:
-		return false
-	case t.Before(v[0].Timestamp):
-		return false
-	case !v[v.Len()-1].Timestamp.Before(t):
-		return false
-	default:
-		return true
-	}
-}
-
-// TruncateBefore returns a subslice of the original such that extraneous
-// samples in the collection that occur before the provided time are
-// dropped.  The original slice is not mutated
-func (v Values) TruncateBefore(t time.Time) Values {
-	index := sort.Search(len(v), func(i int) bool {
-		timestamp := v[i].Timestamp
-
-		return !timestamp.Before(t)
-	})
-
-	return v[index:]
-}
-
-func (v Values) ToDTO() (out *dto.SampleValueSeries) {
-	out = &dto.SampleValueSeries{}
-
-	for _, value := range v {
-		out.Value = append(out.Value, value.ToDTO())
-	}
-
-	return
-}
-
-func (v Values) ToSampleKey(f *Fingerprint) SampleKey {
-	return SampleKey{
-		Fingerprint:    f,
-		FirstTimestamp: v[0].Timestamp,
-		LastTimestamp:  v[len(v)-1].Timestamp,
-		SampleCount:    uint32(len(v)),
-	}
-}
-
-func (v Values) String() string {
-	buffer := bytes.Buffer{}
-
-	fmt.Fprintf(&buffer, "[")
-	for i, value := range v {
-		fmt.Fprintf(&buffer, "%d. %s", i, value)
-		if i != len(v)-1 {
-			fmt.Fprintf(&buffer, "\n")
-		}
-	}
-	fmt.Fprintf(&buffer, "]")
-
-	return buffer.String()
-}
-
-func NewValuesFromDTO(dto *dto.SampleValueSeries) (v Values) {
-	for _, value := range dto.Value {
-		v = append(v, SamplePair{
-			Timestamp: time.Unix(*value.Timestamp, 0).UTC(),
-			Value:     SampleValue(*value.Value),
-		})
-	}
-
-	return v
-}
-
-type SampleSet struct {
-	Metric Metric
-	Values Values
-}
-
-type Interval struct {
-	OldestInclusive time.Time
-	NewestInclusive time.Time
-}

model/metric_test.go

@@ -1,229 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package model
-
-import (
-	"github.com/prometheus/prometheus/utility/test"
-	"testing"
-	"time"
-)
-
-func testMetric(t test.Tester) {
-	var scenarios = []struct {
-		input  map[string]string
-		hash   uint64
-		rowkey string
-	}{
-		{
-			input:  map[string]string{},
-			rowkey: "02676020557754725067--0-",
-			hash:   2676020557754725067,
-		},
-		{
-			input: map[string]string{
-				"first_name":   "electro",
-				"occupation":   "robot",
-				"manufacturer": "westinghouse",
-			},
-			rowkey: "04776841610193542734-f-6-t",
-			hash:   4776841610193542734,
-		},
-		{
-			input: map[string]string{
-				"x": "y",
-			},
-			rowkey: "01306929544689993150-x-2-y",
-			hash:   1306929544689993150,
-		},
-	}
-
-	for i, scenario := range scenarios {
-		metric := Metric{}
-		for key, value := range scenario.input {
-			metric[LabelName(key)] = LabelValue(value)
-		}
-
-		expectedRowKey := scenario.rowkey
-		expectedHash := scenario.hash
-		fingerprint := NewFingerprintFromMetric(metric)
-		actualRowKey := fingerprint.ToRowKey()
-		actualHash := fingerprint.Hash()
-
-		if expectedRowKey != actualRowKey {
-			t.Errorf("%d. expected %s, got %s", i, expectedRowKey, actualRowKey)
-		}
-		if actualHash != expectedHash {
-			t.Errorf("%d. expected %d, got %d", i, expectedHash, actualHash)
-		}
-	}
-}
-
-func TestMetric(t *testing.T) {
-	testMetric(t)
-}
-
-func BenchmarkMetric(b *testing.B) {
-	for i := 0; i < b.N; i++ {
-		testMetric(b)
-	}
-}
-
-func testTruncateBefore(t test.Tester) {
-	type in struct {
-		values Values
-		time   time.Time
-	}
-	instant := time.Now()
-	var scenarios = []struct {
-		in  in
-		out Values
-	}{
-		{
-			in: in{
-				time: instant,
-				values: Values{
-					{
-						Value:     0,
-						Timestamp: instant,
-					},
-					{
-						Value:     1,
-						Timestamp: instant.Add(time.Second),
-					},
-					{
-						Value:     2,
-						Timestamp: instant.Add(2 * time.Second),
-					},
-					{
-						Value:     3,
-						Timestamp: instant.Add(3 * time.Second),
-					},
-					{
-						Value:     4,
-						Timestamp: instant.Add(4 * time.Second),
-					},
-				},
-			},
-			out: Values{
-				{
-					Value:     0,
-					Timestamp: instant,
-				},
-				{
-					Value:     1,
-					Timestamp: instant.Add(time.Second),
-				},
-				{
-					Value:     2,
-					Timestamp: instant.Add(2 * time.Second),
-				},
-				{
-					Value:     3,
-					Timestamp: instant.Add(3 * time.Second),
-				},
-				{
-					Value:     4,
-					Timestamp: instant.Add(4 * time.Second),
-				},
-			},
-		},
-		{
-			in: in{
-				time: instant.Add(2 * time.Second),
-				values: Values{
-					{
-						Value:     0,
-						Timestamp: instant,
-					},
-					{
-						Value:     1,
-						Timestamp: instant.Add(time.Second),
-					},
-					{
-						Value:     2,
-						Timestamp: instant.Add(2 * time.Second),
-					},
-					{
-						Value:     3,
-						Timestamp: instant.Add(3 * time.Second),
-					},
-					{
-						Value:     4,
-						Timestamp: instant.Add(4 * time.Second),
-					},
-				},
-			},
-			out: Values{
-				{
-					Value:     2,
-					Timestamp: instant.Add(2 * time.Second),
-				},
-				{
-					Value:     3,
-					Timestamp: instant.Add(3 * time.Second),
-				},
-				{
-					Value:     4,
-					Timestamp: instant.Add(4 * time.Second),
-				},
-			},
-		},
-		{
-			in: in{
-				time: instant.Add(5 * time.Second),
-				values: Values{
-					{
-						Value:     0,
-						Timestamp: instant,
-					},
-					{
-						Value:     1,
-						Timestamp: instant.Add(time.Second),
-					},
-					{
-						Value:     2,
-						Timestamp: instant.Add(2 * time.Second),
-					},
-					{
-						Value:     3,
-						Timestamp: instant.Add(3 * time.Second),
-					},
-					{
-						Value:     4,
-						Timestamp: instant.Add(4 * time.Second),
-					},
-				},
-			},
-			out: Values{},
-		},
-	}
-
-	for i, scenario := range scenarios {
-		actual := scenario.in.values.TruncateBefore(scenario.in.time)
-
-		if len(actual) != len(scenario.out) {
-			t.Fatalf("%d. expected length of %d, got %d", i, len(scenario.out), len(actual))
-		}
-
-		for j, actualValue := range actual {
-			if !actualValue.Equal(scenario.out[j]) {
-				t.Fatalf("%d.%d. expected %s, got %s", i, j, scenario.out[j], actualValue)
-			}
-		}
-	}
-}
-
-func TestTruncateBefore(t *testing.T) {
-	testTruncateBefore(t)
-}

model/sample.go

@@ -1,59 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package model
-
-import (
-	"time"
-)
-
-type Sample struct {
-	Metric    Metric
-	Value     SampleValue
-	Timestamp time.Time
-}
-
-func (s Sample) Equal(sample Sample) bool {
-	if !NewFingerprintFromMetric(s.Metric).Equal(NewFingerprintFromMetric(sample.Metric)) {
-		return false
-	}
-	if !s.Timestamp.Equal(sample.Timestamp) {
-		return false
-	}
-	if !s.Value.Equal(sample.Value) {
-		return false
-	}
-
-	return true
-}
-
-type Samples []Sample
-
-func (s Samples) Len() int {
-	return len(s)
-}
-
-func (s Samples) Less(i, j int) bool {
-	switch {
-	case NewFingerprintFromMetric(s[i].Metric).Less(NewFingerprintFromMetric(s[j].Metric)):
-		return true
-	case s[i].Timestamp.Before(s[j].Timestamp):
-		return true
-	default:
-		return false
-	}
-}
-
-func (s Samples) Swap(i, j int) {
-	s[i], s[j] = s[j], s[i]
-}

model/watermark.go

@@ -1,49 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package model
-
-import (
-	"code.google.com/p/goprotobuf/proto"
-	dto "github.com/prometheus/prometheus/model/generated"
-	"time"
-)
-
-// Watermark provides a representation of dto.MetricHighWatermark with
-// associated business logic methods attached to it to enhance code readability.
-type Watermark struct {
-	time.Time
-}
-
-// ToMetricHighWatermarkDTO builds a MetricHighWatermark DTO out of a given
-// Watermark.
-func (w Watermark) ToMetricHighWatermarkDTO() *dto.MetricHighWatermark {
-	return &dto.MetricHighWatermark{
-		Timestamp: proto.Int64(w.Time.Unix()),
-	}
-}
-
-// NewWatermarkFromHighWatermarkDTO builds Watermark from the provided
-// dto.MetricHighWatermark object.
-func NewWatermarkFromHighWatermarkDTO(d *dto.MetricHighWatermark) Watermark {
-	return Watermark{
-		time.Unix(*d.Timestamp, 0).UTC(),
-	}
-}
-
-// NewWatermarkFromTime builds a new Watermark for the provided time.
-func NewWatermarkFromTime(t time.Time) Watermark {
-	return Watermark{
-		t,
-	}
-}

retrieval/format/discriminator.go

@@ -1,68 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package format
-
-import (
-	"fmt"
-	"mime"
-	"net/http"
-)
-
-var (
-	DefaultRegistry Registry = &registry{}
-)
-
-// Registry is responsible for applying a determination strategy to the given
-// inputs to determine what Processor can handle this type of input.
-type Registry interface {
-	// ProcessorForRequestHeader interprets a HTTP request header to determine
-	// what Processor should be used for the given input.
-	ProcessorForRequestHeader(header http.Header) (Processor, error)
-}
-
-type registry struct {
-}
-
-func (r *registry) ProcessorForRequestHeader(header http.Header) (Processor, error) {
-	if header == nil {
-		return nil, fmt.Errorf("Received illegal and nil header.")
-	}
-
-	mediatype, params, err := mime.ParseMediaType(header.Get("Content-Type"))
-
-	if err != nil {
-		return nil, fmt.Errorf("Invalid Content-Type header %q: %s", header.Get("Content-Type"), err)
-	}
-
-	if mediatype != "application/json" {
-		return nil, fmt.Errorf("Unsupported media type %q, expected %q", mediatype, "application/json")
-	}
-
-	var prometheusApiVersion string
-
-	if params["schema"] == "prometheus/telemetry" && params["version"] != "" {
-		prometheusApiVersion = params["version"]
-	} else {
-		prometheusApiVersion = header.Get("X-Prometheus-API-Version")
-	}
-
-	switch prometheusApiVersion {
-	case "0.0.2":
-		return Processor002, nil
-	case "0.0.1":
-		return Processor001, nil
-	default:
-		return nil, fmt.Errorf("Unrecognized API version %s", prometheusApiVersion)
-	}
-}

retrieval/format/discriminator_test.go

@@ -1,92 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package format
-
-import (
-	"fmt"
-	"github.com/prometheus/prometheus/utility/test"
-	"net/http"
-	"testing"
-)
-
-func testDiscriminatorHttpHeader(t test.Tester) {
-	var scenarios = []struct {
-		input  map[string]string
-		output Processor
-		err    error
-	}{
-		{
-			output: nil,
-			err:    fmt.Errorf("Received illegal and nil header."),
-		},
-		{
-			input:  map[string]string{"Content-Type": "application/json", "X-Prometheus-API-Version": "0.0.0"},
-			output: nil,
-			err:    fmt.Errorf("Unrecognized API version 0.0.0"),
-		},
-		{
-			input:  map[string]string{"Content-Type": "application/json", "X-Prometheus-API-Version": "0.0.1"},
-			output: Processor001,
-			err:    nil,
-		},
-		{
-			input:  map[string]string{"Content-Type": `application/json; schema="prometheus/telemetry"; version=0.0.0`},
-			output: nil,
-			err:    fmt.Errorf("Unrecognized API version 0.0.0"),
-		},
-		{
-			input:  map[string]string{"Content-Type": `application/json; schema="prometheus/telemetry"; version=0.0.1`},
-			output: Processor001,
-			err:    nil,
-		},
-	}
-
-	for i, scenario := range scenarios {
-		var header http.Header
-
-		if len(scenario.input) > 0 {
-			header = http.Header{}
-		}
-
-		for key, value := range scenario.input {
-			header.Add(key, value)
-		}
-
-		actual, err := DefaultRegistry.ProcessorForRequestHeader(header)
-
-		if scenario.err != err {
-			if scenario.err != nil && err != nil {
-				if scenario.err.Error() != err.Error() {
-					t.Errorf("%d. expected %s, got %s", i, scenario.err, err)
-				}
-			} else if scenario.err != nil || err != nil {
-				t.Errorf("%d. expected %s, got %s", i, scenario.err, err)
-			}
-		}
-
-		if scenario.output != actual {
-			t.Errorf("%d. expected %s, got %s", i, scenario.output, actual)
-		}
-	}
-}
-
-func TestDiscriminatorHttpHeader(t *testing.T) {
-	testDiscriminatorHttpHeader(t)
-}
-
-func BenchmarkDiscriminatorHttpHeader(b *testing.B) {
-	for i := 0; i < b.N; i++ {
-		testDiscriminatorHttpHeader(b)
-	}
-}

retrieval/format/fixtures/test0_0_1-0_0_2.json

@@ -1,79 +0,0 @@
-[
-  {
-    "baseLabels": {
-      "name": "rpc_calls_total",
-      "job": "batch_job"
-    },
-    "docstring": "RPC calls.",
-    "metric": {
-      "type": "counter",
-      "value": [
-        {
-          "labels": {
-            "service": "zed"
-          },
-          "value": 25
-        },
-        {
-          "labels": {
-            "service": "bar"
-          },
-          "value": 25
-        },
-        {
-          "labels": {
-            "service": "foo"
-          },
-          "value": 25
-        }
-      ]
-    }
-  },
-  {
-    "baseLabels": {
-      "name": "rpc_latency_microseconds"
-    },
-      "docstring": "RPC latency.",
-      "metric": {
-        "type": "histogram",
-        "value": [
-          {
-            "labels": {
-              "service": "foo"
-            },
-            "value": {
-              "0.010000": 15.890724674774395,
-              "0.050000": 15.890724674774395,
-              "0.500000": 84.63044031436561,
-              "0.900000": 160.21100853053224,
-              "0.990000": 172.49828748957728
-            }
-          },
-          {
-            "labels": {
-              "service": "zed"
-            },
-            "value": {
-              "0.010000": 0.0459814091918713,
-              "0.050000": 0.0459814091918713,
-              "0.500000": 0.6120456642749681,
-              "0.900000": 1.355915069887731,
-              "0.990000": 1.772733213161236
-            }
-          },
-          {
-            "labels": {
-              "service": "bar"
-            },
-            "value": {
-              "0.010000": 78.48563317257356,
-              "0.050000": 78.48563317257356,
-              "0.500000": 97.31798360385088,
-              "0.900000": 109.89202084295582,
-              "0.990000": 109.99626121011262
-            }
-          }
-        ]
-      }
-  }
-]

retrieval/format/interface_test.go

@@ -1,22 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package format
-
-import (
-	"testing"
-)
-
-func TestInterface(t *testing.T) {
-	var _ Registry = &registry{}
-}

retrieval/format/processor.go

@@ -1,70 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package format
-
-import (
-	"github.com/prometheus/prometheus/model"
-	"io"
-	"time"
-)
-
-// Processor is responsible for decoding the actual message responses from
-// stream into a format that can be consumed with the end result written
-// to the results channel.
-type Processor interface {
-	// Process performs the work on the input and closes the incoming stream.
-	Process(stream io.ReadCloser, timestamp time.Time, baseLabels model.LabelSet, results chan Result) (err error)
-}
-
-// The ProcessorFunc type allows the use of ordinary functions for processors.
-type ProcessorFunc func(io.ReadCloser, time.Time, model.LabelSet, chan Result) error
-
-func (f ProcessorFunc) Process(stream io.ReadCloser, timestamp time.Time, baseLabels model.LabelSet, results chan Result) error {
-	return f(stream, timestamp, baseLabels, results)
-}
-
-// Helper function to convert map[string]string into model.LabelSet.
-//
-// NOTE: This should be deleted when support for go 1.0.3 is removed; 1.1 is
-//       smart enough to unmarshal JSON objects into model.LabelSet directly.
-func LabelSet(labels map[string]string) model.LabelSet {
-	labelset := make(model.LabelSet, len(labels))
-
-	for k, v := range labels {
-		labelset[model.LabelName(k)] = model.LabelValue(v)
-	}
-
-	return labelset
-}
-
-// Helper function to merge a target's base labels ontop of the labels of an
-// exported sample. If a label is already defined in the exported sample, we
-// assume that we are scraping an intermediate exporter and attach
-// "exporter_"-prefixes to Prometheus' own base labels.
-func mergeTargetLabels(entityLabels, targetLabels model.LabelSet) model.LabelSet {
-	result := model.LabelSet{}
-
-	for label, value := range entityLabels {
-		result[label] = value
-	}
-
-	for label, labelValue := range targetLabels {
-		if _, exists := result[label]; exists {
-			result[model.ExporterLabelPrefix+label] = labelValue
-		} else {
-			result[label] = labelValue
-		}
-	}
-	return result
-}

retrieval/format/processor0_0_1.go

@@ -1,140 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package format
-
-import (
-	"encoding/json"
-	"fmt"
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/utility"
-	"io"
-	"io/ioutil"
-	"time"
-)
-
-const (
-	baseLabels001 = "baseLabels"
-	counter001    = "counter"
-	docstring001  = "docstring"
-	gauge001      = "gauge"
-	histogram001  = "histogram"
-	labels001     = "labels"
-	metric001     = "metric"
-	type001       = "type"
-	value001      = "value"
-	percentile001 = "percentile"
-)
-
-var (
-	Processor001 Processor = &processor001{}
-)
-
-// processor001 is responsible for handling API version 0.0.1.
-type processor001 struct {
-	time utility.Time
-}
-
-// entity001 represents a the JSON structure that 0.0.1 uses.
-type entity001 []struct {
-	BaseLabels map[string]string `json:"baseLabels"`
-	Docstring  string            `json:"docstring"`
-	Metric     struct {
-		MetricType string `json:"type"`
-		Value      []struct {
-			Labels map[string]string `json:"labels"`
-			Value  interface{}       `json:"value"`
-		} `json:"value"`
-	} `json:"metric"`
-}
-
-func (p *processor001) Process(stream io.ReadCloser, timestamp time.Time, baseLabels model.LabelSet, results chan Result) error {
-	// TODO(matt): Replace with plain-jane JSON unmarshalling.
-	defer stream.Close()
-
-	buffer, err := ioutil.ReadAll(stream)
-	if err != nil {
-		return err
-	}
-
-	entities := entity001{}
-
-	if err = json.Unmarshal(buffer, &entities); err != nil {
-		return err
-	}
-
-	// TODO(matt): This outer loop is a great basis for parallelization.
-	pendingSamples := model.Samples{}
-	for _, entity := range entities {
-		for _, value := range entity.Metric.Value {
-			entityLabels := LabelSet(entity.BaseLabels).Merge(LabelSet(value.Labels))
-			labels := mergeTargetLabels(entityLabels, baseLabels)
-
-			switch entity.Metric.MetricType {
-			case gauge001, counter001:
-				sampleValue, ok := value.Value.(float64)
-				if !ok {
-					err = fmt.Errorf("Could not convert value from %s %s to float64.", entity, value)
-					results <- Result{Err: err}
-					continue
-				}
-
-				pendingSamples = append(pendingSamples, model.Sample{
-					Metric:    model.Metric(labels),
-					Timestamp: timestamp,
-					Value:     model.SampleValue(sampleValue),
-				})
-
-				break
-
-			case histogram001:
-				sampleValue, ok := value.Value.(map[string]interface{})
-				if !ok {
-					err = fmt.Errorf("Could not convert value from %q to a map[string]interface{}.", value.Value)
-					results <- Result{Err: err}
-					continue
-				}
-
-				for percentile, percentileValue := range sampleValue {
-					individualValue, ok := percentileValue.(float64)
-					if !ok {
-						err = fmt.Errorf("Could not convert value from %q to a float64.", percentileValue)
-						results <- Result{Err: err}
-						continue
-					}
-
-					childMetric := make(map[model.LabelName]model.LabelValue, len(labels)+1)
-
-					for k, v := range labels {
-						childMetric[k] = v
-					}
-
-					childMetric[model.LabelName(percentile001)] = model.LabelValue(percentile)
-
-					pendingSamples = append(pendingSamples, model.Sample{
-						Metric:    model.Metric(childMetric),
-						Timestamp: timestamp,
-						Value:     model.SampleValue(individualValue),
-					})
-				}
-
-				break
-			}
-		}
-	}
-	if len(pendingSamples) > 0 {
-		results <- Result{Samples: pendingSamples}
-	}
-
-	return nil
-}

retrieval/format/processor0_0_1_test.go

@@ -1,216 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package format
-
-import (
-	"container/list"
-	"fmt"
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/utility/test"
-	"os"
-	"path"
-	"testing"
-	"time"
-)
-
-func testProcessor001Process(t test.Tester) {
-	var scenarios = []struct {
-		in         string
-		baseLabels model.LabelSet
-		out        model.Samples
-		err        error
-	}{
-		{
-			in:  "empty.json",
-			err: fmt.Errorf("unexpected end of JSON input"),
-		},
-		{
-			in: "test0_0_1-0_0_2.json",
-			baseLabels: model.LabelSet{
-				model.JobLabel: "batch_exporter",
-			},
-			out: model.Samples{
-				model.Sample{
-					Metric: model.Metric{"service": "zed", model.MetricNameLabel: "rpc_calls_total", "job": "batch_job", "exporter_job": "batch_exporter"},
-					Value:  25,
-				},
-				model.Sample{
-					Metric: model.Metric{"service": "bar", model.MetricNameLabel: "rpc_calls_total", "job": "batch_job", "exporter_job": "batch_exporter"},
-					Value:  25,
-				},
-				model.Sample{
-					Metric: model.Metric{"service": "foo", model.MetricNameLabel: "rpc_calls_total", "job": "batch_job", "exporter_job": "batch_exporter"},
-					Value:  25,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.010000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "zed", "job": "batch_exporter"},
-					Value:  0.0459814091918713,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.010000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "bar", "job": "batch_exporter"},
-					Value:  78.48563317257356,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.010000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "foo", "job": "batch_exporter"},
-					Value:  15.890724674774395,
-				},
-				model.Sample{
-
-					Metric: model.Metric{"percentile": "0.050000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "zed", "job": "batch_exporter"},
-					Value:  0.0459814091918713,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.050000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "bar", "job": "batch_exporter"},
-					Value:  78.48563317257356,
-				},
-				model.Sample{
-
-					Metric: model.Metric{"percentile": "0.050000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "foo", "job": "batch_exporter"},
-					Value:  15.890724674774395,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.500000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "zed", "job": "batch_exporter"},
-					Value:  0.6120456642749681,
-				},
-				model.Sample{
-
-					Metric: model.Metric{"percentile": "0.500000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "bar", "job": "batch_exporter"},
-					Value:  97.31798360385088,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.500000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "foo", "job": "batch_exporter"},
-					Value:  84.63044031436561,
-				},
-				model.Sample{
-
-					Metric: model.Metric{"percentile": "0.900000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "zed", "job": "batch_exporter"},
-					Value:  1.355915069887731,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.900000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "bar", "job": "batch_exporter"},
-					Value:  109.89202084295582,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.900000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "foo", "job": "batch_exporter"},
-					Value:  160.21100853053224,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.990000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "zed", "job": "batch_exporter"},
-					Value:  1.772733213161236,
-				},
-				model.Sample{
-
-					Metric: model.Metric{"percentile": "0.990000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "bar", "job": "batch_exporter"},
-					Value:  109.99626121011262,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.990000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "foo", "job": "batch_exporter"},
-					Value:  172.49828748957728,
-				},
-			},
-		},
-	}
-
-	for i, scenario := range scenarios {
-		inputChannel := make(chan Result, 1024)
-
-		defer func(c chan Result) {
-			close(c)
-		}(inputChannel)
-
-		reader, err := os.Open(path.Join("fixtures", scenario.in))
-		if err != nil {
-			t.Fatalf("%d. couldn't open scenario input file %s: %s", i, scenario.in, err)
-		}
-
-		err = Processor001.Process(reader, time.Now(), scenario.baseLabels, inputChannel)
-		if !test.ErrorEqual(scenario.err, err) {
-			t.Errorf("%d. expected err of %s, got %s", i, scenario.err, err)
-			continue
-		}
-
-		delivered := model.Samples{}
-
-		for len(inputChannel) != 0 {
-			result := <-inputChannel
-			if result.Err != nil {
-				t.Fatalf("%d. expected no error, got: %s", i, result.Err)
-			}
-			delivered = append(delivered, result.Samples...)
-		}
-
-		if len(delivered) != len(scenario.out) {
-			t.Errorf("%d. expected output length of %d, got %d", i, len(scenario.out), len(delivered))
-
-			continue
-		}
-
-		expectedElements := list.New()
-		for _, j := range scenario.out {
-			expectedElements.PushBack(j)
-		}
-
-		for j := 0; j < len(delivered); j++ {
-			actual := delivered[j]
-
-			found := false
-			for element := expectedElements.Front(); element != nil && found == false; element = element.Next() {
-				candidate := element.Value.(model.Sample)
-
-				if candidate.Value != actual.Value {
-					continue
-				}
-
-				if len(candidate.Metric) != len(actual.Metric) {
-					continue
-				}
-
-				labelsMatch := false
-
-				for key, value := range candidate.Metric {
-					actualValue, ok := actual.Metric[key]
-					if !ok {
-						break
-					}
-					if actualValue == value {
-						labelsMatch = true
-						break
-					}
-				}
-
-				if !labelsMatch {
-					continue
-				}
-
-				// XXX: Test time.
-				found = true
-				expectedElements.Remove(element)
-			}
-
-			if !found {
-				t.Errorf("%d.%d. expected to find %s among candidate, absent", i, j, actual)
-			}
-		}
-	}
-}
-
-func TestProcessor001Process(t *testing.T) {
-	testProcessor001Process(t)
-}
-
-func BenchmarkProcessor001Process(b *testing.B) {
-	for i := 0; i < b.N; i++ {
-		testProcessor001Process(b)
-	}
-}

retrieval/format/processor0_0_2.go

@@ -1,114 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package format
-
-import (
-	"encoding/json"
-	"fmt"
-	"github.com/prometheus/prometheus/model"
-	"io"
-	"time"
-)
-
-// Processor for telemetry schema version 0.0.2.
-var Processor002 ProcessorFunc = func(stream io.ReadCloser, timestamp time.Time, baseLabels model.LabelSet, results chan Result) error {
-	// container for telemetry data
-	var entities []struct {
-		BaseLabels map[string]string `json:"baseLabels"`
-		Docstring  string            `json:"docstring"`
-		Metric     struct {
-			Type   string          `json:"type"`
-			Values json.RawMessage `json:"value"`
-		} `json:"metric"`
-	}
-
-	// concrete type for histogram values
-	type histogram struct {
-		Labels map[string]string            `json:"labels"`
-		Values map[string]model.SampleValue `json:"value"`
-	}
-
-	// concrete type for counter and gauge values
-	type counter struct {
-		Labels map[string]string `json:"labels"`
-		Value  model.SampleValue `json:"value"`
-	}
-
-	defer stream.Close()
-
-	if err := json.NewDecoder(stream).Decode(&entities); err != nil {
-		return err
-	}
-
-	pendingSamples := model.Samples{}
-	for _, entity := range entities {
-		switch entity.Metric.Type {
-		case "counter", "gauge":
-			var values []counter
-
-			if err := json.Unmarshal(entity.Metric.Values, &values); err != nil {
-				results <- Result{
-					Err: fmt.Errorf("Could not extract %s value: %s", entity.Metric.Type, err),
-				}
-				continue
-			}
-
-			for _, counter := range values {
-				entityLabels := LabelSet(entity.BaseLabels).Merge(LabelSet(counter.Labels))
-				labels := mergeTargetLabels(entityLabels, baseLabels)
-
-				pendingSamples = append(pendingSamples, model.Sample{
-					Metric:    model.Metric(labels),
-					Timestamp: timestamp,
-					Value:     counter.Value,
-				})
-			}
-
-		case "histogram":
-			var values []histogram
-
-			if err := json.Unmarshal(entity.Metric.Values, &values); err != nil {
-				results <- Result{
-					Err: fmt.Errorf("Could not extract %s value: %s", entity.Metric.Type, err),
-				}
-				continue
-			}
-
-			for _, histogram := range values {
-				for percentile, value := range histogram.Values {
-					entityLabels := LabelSet(entity.BaseLabels).Merge(LabelSet(histogram.Labels))
-					entityLabels[model.LabelName("percentile")] = model.LabelValue(percentile)
-					labels := mergeTargetLabels(entityLabels, baseLabels)
-
-					pendingSamples = append(pendingSamples, model.Sample{
-						Metric:    model.Metric(labels),
-						Timestamp: timestamp,
-						Value:     value,
-					})
-				}
-			}
-
-		default:
-			results <- Result{
-				Err: fmt.Errorf("Unknown metric type %q", entity.Metric.Type),
-			}
-		}
-	}
-
-	if len(pendingSamples) > 0 {
-		results <- Result{Samples: pendingSamples}
-	}
-
-	return nil
-}

retrieval/format/processor0_0_2_test.go

@@ -1,216 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package format
-
-import (
-	"container/list"
-	"fmt"
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/utility/test"
-	"os"
-	"path"
-	"testing"
-	"time"
-)
-
-func testProcessor002Process(t test.Tester) {
-	var scenarios = []struct {
-		in         string
-		baseLabels model.LabelSet
-		out        model.Samples
-		err        error
-	}{
-		{
-			in:  "empty.json",
-			err: fmt.Errorf("EOF"),
-		},
-		{
-			in: "test0_0_1-0_0_2.json",
-			baseLabels: model.LabelSet{
-				model.JobLabel: "batch_exporter",
-			},
-			out: model.Samples{
-				model.Sample{
-					Metric: model.Metric{"service": "zed", model.MetricNameLabel: "rpc_calls_total", "job": "batch_job", "exporter_job": "batch_exporter"},
-					Value:  25,
-				},
-				model.Sample{
-					Metric: model.Metric{"service": "bar", model.MetricNameLabel: "rpc_calls_total", "job": "batch_job", "exporter_job": "batch_exporter"},
-					Value:  25,
-				},
-				model.Sample{
-					Metric: model.Metric{"service": "foo", model.MetricNameLabel: "rpc_calls_total", "job": "batch_job", "exporter_job": "batch_exporter"},
-					Value:  25,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.010000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "zed", "job": "batch_exporter"},
-					Value:  0.0459814091918713,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.010000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "bar", "job": "batch_exporter"},
-					Value:  78.48563317257356,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.010000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "foo", "job": "batch_exporter"},
-					Value:  15.890724674774395,
-				},
-				model.Sample{
-
-					Metric: model.Metric{"percentile": "0.050000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "zed", "job": "batch_exporter"},
-					Value:  0.0459814091918713,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.050000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "bar", "job": "batch_exporter"},
-					Value:  78.48563317257356,
-				},
-				model.Sample{
-
-					Metric: model.Metric{"percentile": "0.050000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "foo", "job": "batch_exporter"},
-					Value:  15.890724674774395,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.500000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "zed", "job": "batch_exporter"},
-					Value:  0.6120456642749681,
-				},
-				model.Sample{
-
-					Metric: model.Metric{"percentile": "0.500000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "bar", "job": "batch_exporter"},
-					Value:  97.31798360385088,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.500000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "foo", "job": "batch_exporter"},
-					Value:  84.63044031436561,
-				},
-				model.Sample{
-
-					Metric: model.Metric{"percentile": "0.900000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "zed", "job": "batch_exporter"},
-					Value:  1.355915069887731,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.900000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "bar", "job": "batch_exporter"},
-					Value:  109.89202084295582,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.900000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "foo", "job": "batch_exporter"},
-					Value:  160.21100853053224,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.990000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "zed", "job": "batch_exporter"},
-					Value:  1.772733213161236,
-				},
-				model.Sample{
-
-					Metric: model.Metric{"percentile": "0.990000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "bar", "job": "batch_exporter"},
-					Value:  109.99626121011262,
-				},
-				model.Sample{
-					Metric: model.Metric{"percentile": "0.990000", model.MetricNameLabel: "rpc_latency_microseconds", "service": "foo", "job": "batch_exporter"},
-					Value:  172.49828748957728,
-				},
-			},
-		},
-	}
-
-	for i, scenario := range scenarios {
-		inputChannel := make(chan Result, 1024)
-
-		defer func(c chan Result) {
-			close(c)
-		}(inputChannel)
-
-		reader, err := os.Open(path.Join("fixtures", scenario.in))
-		if err != nil {
-			t.Fatalf("%d. couldn't open scenario input file %s: %s", i, scenario.in, err)
-		}
-
-		err = Processor002.Process(reader, time.Now(), scenario.baseLabels, inputChannel)
-		if !test.ErrorEqual(scenario.err, err) {
-			t.Errorf("%d. expected err of %s, got %s", i, scenario.err, err)
-			continue
-		}
-
-		delivered := model.Samples{}
-
-		for len(inputChannel) != 0 {
-			result := <-inputChannel
-			if result.Err != nil {
-				t.Fatalf("%d. expected no error, got: %s", i, result.Err)
-			}
-			delivered = append(delivered, result.Samples...)
-		}
-
-		if len(delivered) != len(scenario.out) {
-			t.Errorf("%d. expected output length of %d, got %d", i, len(scenario.out), len(delivered))
-
-			continue
-		}
-
-		expectedElements := list.New()
-		for _, j := range scenario.out {
-			expectedElements.PushBack(j)
-		}
-
-		for j := 0; j < len(delivered); j++ {
-			actual := delivered[j]
-
-			found := false
-			for element := expectedElements.Front(); element != nil && found == false; element = element.Next() {
-				candidate := element.Value.(model.Sample)
-
-				if candidate.Value != actual.Value {
-					continue
-				}
-
-				if len(candidate.Metric) != len(actual.Metric) {
-					continue
-				}
-
-				labelsMatch := false
-
-				for key, value := range candidate.Metric {
-					actualValue, ok := actual.Metric[key]
-					if !ok {
-						break
-					}
-					if actualValue == value {
-						labelsMatch = true
-						break
-					}
-				}
-
-				if !labelsMatch {
-					continue
-				}
-
-				// XXX: Test time.
-				found = true
-				expectedElements.Remove(element)
-			}
-
-			if !found {
-				t.Errorf("%d.%d. expected to find %s among candidate, absent", i, j, actual)
-			}
-		}
-	}
-}
-
-func TestProcessor002Process(t *testing.T) {
-	testProcessor002Process(t)
-}
-
-func BenchmarkProcessor002Process(b *testing.B) {
-	for i := 0; i < b.N; i++ {
-		testProcessor002Process(b)
-	}
-}

retrieval/format/result.go

@@ -1,24 +0,0 @@
-// Copyright 2013 Prometheus Team
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package format
-
-import (
-	"github.com/prometheus/prometheus/model"
-)
-
-// Result encapsulates the outcome from processing samples from a source.
-type Result struct {
-	Err     error
-	Samples model.Samples
-}

retrieval/target.go

@@ -14,19 +14,26 @@ package retrieval
 
 import (
 	"fmt"
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/retrieval/format"
+
 	"log"
 	"net/http"
 	"os"
 	"strings"
 	"time"
+
+	"github.com/prometheus/client_golang/extraction"
+
+	clientmodel "github.com/prometheus/client_golang/model"
 )
 
-var (
-	localhostRepresentations = []string{"http://127.0.0.1", "http://localhost"}
+const (
+	InstanceLabel clientmodel.LabelName = "instance"
+	// The metric name for the synthetic health variable.
+	ScrapeHealthMetricName clientmodel.LabelValue = "up"
 )
 
+var localhostRepresentations = []string{"http://127.0.0.1", "http://localhost"}
+
 // The state of the given Target.
 type TargetState int
 
@@ -81,7 +88,7 @@ type Target interface {
 	// alluded to in the scheduledFor function, to use this as it wants to.  The
 	// current use case is to create a common batching time for scraping multiple
 	// Targets in the future through the TargetPool.
-	Scrape(earliest time.Time, results chan format.Result) error
+	Scrape(earliest time.Time, results chan<- *extraction.Result) error
 	// Fulfill the healthReporter interface.
 	State() TargetState
 	// Report the soonest time at which this Target may be scheduled for
@@ -100,7 +107,7 @@ type Target interface {
 	// to the address of the prometheus server.
 	GlobalAddress() string
 	// Return the target's base labels.
-	BaseLabels() model.LabelSet
+	BaseLabels() clientmodel.LabelSet
 	// Merge a new externally supplied target definition (e.g. with changed base
 	// labels) into an old target definition for the same endpoint. Preserve
 	// remaining information - like health state - from the old target.
@@ -121,13 +128,13 @@ type target struct {
 	// What is the deadline for the HTTP or HTTPS against this endpoint.
 	Deadline time.Duration
 	// Any base labels that are added to this target and its metrics.
-	baseLabels model.LabelSet
+	baseLabels clientmodel.LabelSet
 	// The HTTP client used to scrape the target's endpoint.
 	client http.Client
 }
 
 // Furnish a reasonably configured target for querying.
-func NewTarget(address string, deadline time.Duration, baseLabels model.LabelSet) Target {
+func NewTarget(address string, deadline time.Duration, baseLabels clientmodel.LabelSet) Target {
 	target := &target{
 		address:    address,
 		Deadline:   deadline,
@@ -143,32 +150,32 @@ func NewTarget(address string, deadline time.Duration, baseLabels model.LabelSet
 	return target
 }
 
-func (t *target) recordScrapeHealth(results chan format.Result, timestamp time.Time, healthy bool) {
-	metric := model.Metric{}
+func (t *target) recordScrapeHealth(results chan<- *extraction.Result, timestamp time.Time, healthy bool) {
+	metric := clientmodel.Metric{}
 	for label, value := range t.baseLabels {
 		metric[label] = value
 	}
-	metric[model.MetricNameLabel] = model.ScrapeHealthMetricName
-	metric[model.InstanceLabel] = model.LabelValue(t.Address())
+	metric[clientmodel.MetricNameLabel] = clientmodel.LabelValue(ScrapeHealthMetricName)
+	metric[InstanceLabel] = clientmodel.LabelValue(t.Address())
 
-	healthValue := model.SampleValue(0)
+	healthValue := clientmodel.SampleValue(0)
 	if healthy {
-		healthValue = model.SampleValue(1)
+		healthValue = clientmodel.SampleValue(1)
 	}
 
-	sample := model.Sample{
+	sample := &clientmodel.Sample{
 		Metric:    metric,
 		Timestamp: timestamp,
 		Value:     healthValue,
 	}
 
-	results <- format.Result{
+	results <- &extraction.Result{
 		Err:     nil,
-		Samples: model.Samples{sample},
+		Samples: clientmodel.Samples{sample},
 	}
 }
 
-func (t *target) Scrape(earliest time.Time, results chan format.Result) (err error) {
+func (t *target) Scrape(earliest time.Time, results chan<- *extraction.Result) (err error) {
 	now := time.Now()
 	futureState := t.state
 
@@ -187,7 +194,7 @@ func (t *target) Scrape(earliest time.Time, results chan format.Result) (err err
 	return err
 }
 
-func (t *target) scrape(timestamp time.Time, results chan format.Result) (err error) {
+func (t *target) scrape(timestamp time.Time, results chan<- *extraction.Result) (err error) {
 	defer func(start time.Time) {
 		ms := float64(time.Since(start)) / float64(time.Millisecond)
 		labels := map[string]string{address: t.Address(), outcome: success}
@@ -205,19 +212,24 @@ func (t *target) scrape(timestamp time.Time, results chan format.Result) (err er
 	}
 	defer resp.Body.Close()
 
-	processor, err := format.DefaultRegistry.ProcessorForRequestHeader(resp.Header)
+	processor, err := extraction.ProcessorForRequestHeader(resp.Header)
 	if err != nil {
 		return err
 	}
 
 	// XXX: This is a wart; we need to handle this more gracefully down the
 	//      road, especially once we have service discovery support.
-	baseLabels := model.LabelSet{model.InstanceLabel: model.LabelValue(t.Address())}
+	baseLabels := clientmodel.LabelSet{InstanceLabel: clientmodel.LabelValue(t.Address())}
 	for baseLabel, baseValue := range t.baseLabels {
 		baseLabels[baseLabel] = baseValue
 	}
 
-	return processor.Process(resp.Body, timestamp, baseLabels, results)
+	processOptions := &extraction.ProcessOptions{
+		Timestamp:  timestamp,
+		BaseLabels: baseLabels,
+	}
+
+	return processor.ProcessSingle(resp.Body, results, processOptions)
 }
 
 func (t target) State() TargetState {
@@ -249,7 +261,7 @@ func (t target) GlobalAddress() string {
 	return address
 }
 
-func (t target) BaseLabels() model.LabelSet {
+func (t target) BaseLabels() clientmodel.LabelSet {
 	return t.baseLabels
 }
 

retrieval/target_provider.go

@@ -19,8 +19,9 @@ import (
 	"net/url"
 	"time"
 
+	clientmodel "github.com/prometheus/client_golang/model"
+
 	"github.com/prometheus/prometheus/config"
-	"github.com/prometheus/prometheus/model"
 	"github.com/prometheus/prometheus/utility"
 )
 
@@ -61,8 +62,8 @@ func (p *sdTargetProvider) Targets() ([]Target, error) {
 		return nil, err
 	}
 
-	baseLabels := model.LabelSet{
-		model.JobLabel: model.LabelValue(p.job.GetName()),
+	baseLabels := clientmodel.LabelSet{
+		clientmodel.JobLabel: clientmodel.LabelValue(p.job.GetName()),
 	}
 
 	targets := make([]Target, 0, len(addrs))

retrieval/target_test.go

@@ -14,12 +14,14 @@
 package retrieval
 
 import (
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/retrieval/format"
 	"net/http"
 	"net/http/httptest"
 	"testing"
 	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	"github.com/prometheus/client_golang/extraction"
 )
 
 func TestTargetScrapeUpdatesState(t *testing.T) {
@@ -28,7 +30,7 @@ func TestTargetScrapeUpdatesState(t *testing.T) {
 		state:     UNKNOWN,
 		address:   "bad schema",
 	}
-	testTarget.Scrape(time.Time{}, make(chan format.Result, 2))
+	testTarget.Scrape(time.Time{}, make(chan *extraction.Result, 2))
 	if testTarget.state != UNREACHABLE {
 		t.Errorf("Expected target state %v, actual: %v", UNREACHABLE, testTarget.state)
 	}
@@ -38,11 +40,11 @@ func TestTargetRecordScrapeHealth(t *testing.T) {
 	testTarget := target{
 		scheduler:  literalScheduler{},
 		address:    "http://example.url",
-		baseLabels: model.LabelSet{model.JobLabel: "testjob"},
+		baseLabels: clientmodel.LabelSet{clientmodel.JobLabel: "testjob"},
 	}
 
 	now := time.Now()
-	results := make(chan format.Result)
+	results := make(chan *extraction.Result)
 	go testTarget.recordScrapeHealth(results, now, true)
 
 	result := <-results
@@ -52,11 +54,11 @@ func TestTargetRecordScrapeHealth(t *testing.T) {
 	}
 
 	actual := result.Samples[0]
-	expected := model.Sample{
-		Metric: model.Metric{
-			model.MetricNameLabel: model.ScrapeHealthMetricName,
-			model.InstanceLabel:   "http://example.url",
-			model.JobLabel:        "testjob",
+	expected := &clientmodel.Sample{
+		Metric: clientmodel.Metric{
+			clientmodel.MetricNameLabel: ScrapeHealthMetricName,
+			InstanceLabel:               "http://example.url",
+			clientmodel.JobLabel:        "testjob",
 		},
 		Timestamp: now,
 		Value:     1,
@@ -81,8 +83,8 @@ func TestTargetScrapeTimeout(t *testing.T) {
 
 	defer server.Close()
 
-	testTarget := NewTarget(server.URL, 10*time.Millisecond, model.LabelSet{})
-	results := make(chan format.Result, 1024)
+	testTarget := NewTarget(server.URL, 10*time.Millisecond, clientmodel.LabelSet{})
+	results := make(chan *extraction.Result, 1024)
 
 	// scrape once without timeout
 	signal <- true

retrieval/targetmanager.go

@@ -14,11 +14,13 @@
 package retrieval
 
 import (
-	"github.com/prometheus/prometheus/config"
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/retrieval/format"
 	"log"
 	"time"
+
+	"github.com/prometheus/client_golang/extraction"
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	"github.com/prometheus/prometheus/config"
 )
 
 type TargetManager interface {
@@ -34,10 +36,10 @@ type TargetManager interface {
 type targetManager struct {
 	requestAllowance chan bool
 	poolsByJob       map[string]*TargetPool
-	results          chan format.Result
+	results          chan<- *extraction.Result
 }
 
-func NewTargetManager(results chan format.Result, requestAllowance int) TargetManager {
+func NewTargetManager(results chan<- *extraction.Result, requestAllowance int) TargetManager {
 	return &targetManager{
 		requestAllowance: make(chan bool, requestAllowance),
 		results:          results,
@@ -97,12 +99,12 @@ func (m *targetManager) AddTargetsFromConfig(config config.Config) {
 		}
 
 		for _, targetGroup := range job.TargetGroup {
-			baseLabels := model.LabelSet{
-				model.JobLabel: model.LabelValue(job.GetName()),
+			baseLabels := clientmodel.LabelSet{
+				clientmodel.JobLabel: clientmodel.LabelValue(job.GetName()),
 			}
 			if targetGroup.Labels != nil {
 				for _, label := range targetGroup.Labels.Label {
-					baseLabels[model.LabelName(label.GetName())] = model.LabelValue(label.GetValue())
+					baseLabels[clientmodel.LabelName(label.GetName())] = clientmodel.LabelValue(label.GetValue())
 				}
 			}
 

retrieval/targetmanager_test.go

@@ -14,14 +14,19 @@
 package retrieval
 
 import (
-	"code.google.com/p/goprotobuf/proto"
-	"github.com/prometheus/prometheus/config"
-	pb "github.com/prometheus/prometheus/config/generated"
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/retrieval/format"
-	"github.com/prometheus/prometheus/utility/test"
 	"testing"
 	"time"
+
+	"code.google.com/p/goprotobuf/proto"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	"github.com/prometheus/client_golang/extraction"
+
+	pb "github.com/prometheus/prometheus/config/generated"
+
+	"github.com/prometheus/prometheus/config"
+	"github.com/prometheus/prometheus/utility/test"
 )
 
 type fakeTarget struct {
@@ -43,15 +48,15 @@ func (t fakeTarget) GlobalAddress() string {
 	return t.Address()
 }
 
-func (t fakeTarget) BaseLabels() model.LabelSet {
-	return model.LabelSet{}
+func (t fakeTarget) BaseLabels() clientmodel.LabelSet {
+	return clientmodel.LabelSet{}
 }
 
 func (t fakeTarget) Interval() time.Duration {
 	return t.interval
 }
 
-func (t *fakeTarget) Scrape(e time.Time, r chan format.Result) error {
+func (t *fakeTarget) Scrape(e time.Time, r chan<- *extraction.Result) error {
 	t.scrapeCount++
 
 	return nil
@@ -71,7 +76,7 @@ func (t *fakeTarget) scheduledFor() (time time.Time) {
 func (t *fakeTarget) Merge(newTarget Target) {}
 
 func testTargetManager(t test.Tester) {
-	results := make(chan format.Result, 5)
+	results := make(chan *extraction.Result, 5)
 	targetManager := NewTargetManager(results, 3)
 	testJob1 := config.JobConfig{
 		JobConfig: pb.JobConfig{

retrieval/targetpool.go

@@ -19,7 +19,7 @@ import (
 	"sync"
 	"time"
 
-	"github.com/prometheus/prometheus/retrieval/format"
+	"github.com/prometheus/client_golang/extraction"
 )
 
 const (
@@ -50,7 +50,7 @@ func NewTargetPool(m TargetManager, p TargetProvider) *TargetPool {
 	}
 }
 
-func (p *TargetPool) Run(results chan format.Result, interval time.Duration) {
+func (p *TargetPool) Run(results chan<- *extraction.Result, interval time.Duration) {
 	ticker := time.NewTicker(interval)
 	defer ticker.Stop()
 
@@ -116,14 +116,14 @@ func (p *TargetPool) replaceTargets(newTargets []Target) {
 	p.targets = newTargets
 }
 
-func (p *TargetPool) runSingle(earliest time.Time, results chan format.Result, t Target) {
+func (p *TargetPool) runSingle(earliest time.Time, results chan<- *extraction.Result, t Target) {
 	p.manager.acquire()
 	defer p.manager.release()
 
 	t.Scrape(earliest, results)
 }
 
-func (p *TargetPool) runIteration(results chan format.Result, interval time.Duration) {
+func (p *TargetPool) runIteration(results chan<- *extraction.Result, interval time.Duration) {
 	if p.targetProvider != nil {
 		targets, err := p.targetProvider.Targets()
 		if err != nil {

retrieval/targetpool_test.go

@@ -18,7 +18,8 @@ import (
 	"testing"
 	"time"
 
-	"github.com/prometheus/prometheus/retrieval/format"
+	"github.com/prometheus/client_golang/extraction"
+
 	"github.com/prometheus/prometheus/utility/test"
 )
 
@@ -149,7 +150,7 @@ func TestTargetPoolIterationWithUnhealthyTargetsFinishes(t *testing.T) {
 
 	done := make(chan bool)
 	go func() {
-		pool.runIteration(make(chan format.Result), time.Duration(0))
+		pool.runIteration(make(chan *extraction.Result), time.Duration(0))
 		done <- true
 	}()
 

rules/alerting.go

@@ -19,13 +19,24 @@ import (
 	"sync"
 	"time"
 
-	"github.com/prometheus/prometheus/model"
+	clientmodel "github.com/prometheus/client_golang/model"
+
 	"github.com/prometheus/prometheus/rules/ast"
 	"github.com/prometheus/prometheus/stats"
 	"github.com/prometheus/prometheus/storage/metric"
 	"github.com/prometheus/prometheus/utility"
 )
 
+const (
+	// The metric name for synthetic alert timeseries.
+	AlertMetricName clientmodel.LabelValue = "ALERTS"
+
+	// The label name indicating the name of an alert.
+	AlertNameLabel clientmodel.LabelName = "alertname"
+	// The label name indicating the state of an alert.
+	AlertStateLabel clientmodel.LabelName = "alertstate"
+)
+
 // States that active alerts can be in.
 type AlertState int
 
@@ -53,27 +64,27 @@ type Alert struct {
 	// The name of the alert.
 	Name string
 	// The vector element labelset triggering this alert.
-	Labels model.LabelSet
+	Labels clientmodel.LabelSet
 	// The state of the alert (PENDING or FIRING).
 	State AlertState
 	// The time when the alert first transitioned into PENDING state.
 	ActiveSince time.Time
 	// The value of the alert expression for this vector element.
-	Value model.SampleValue
+	Value clientmodel.SampleValue
 }
 
 // sample returns a Sample suitable for recording the alert.
-func (a Alert) sample(timestamp time.Time, value model.SampleValue) model.Sample {
-	recordedMetric := model.Metric{}
+func (a Alert) sample(timestamp time.Time, value clientmodel.SampleValue) *clientmodel.Sample {
+	recordedMetric := clientmodel.Metric{}
 	for label, value := range a.Labels {
 		recordedMetric[label] = value
 	}
 
-	recordedMetric[model.MetricNameLabel] = model.AlertMetricName
-	recordedMetric[model.AlertNameLabel] = model.LabelValue(a.Name)
-	recordedMetric[model.AlertStateLabel] = model.LabelValue(a.State.String())
+	recordedMetric[clientmodel.MetricNameLabel] = AlertMetricName
+	recordedMetric[AlertNameLabel] = clientmodel.LabelValue(a.Name)
+	recordedMetric[AlertStateLabel] = clientmodel.LabelValue(a.State.String())
 
-	return model.Sample{
+	return &clientmodel.Sample{
 		Metric:    recordedMetric,
 		Value:     value,
 		Timestamp: timestamp,
@@ -90,13 +101,13 @@ type AlertingRule struct {
 	// output vector before an alert transitions from PENDING to FIRING state.
 	holdDuration time.Duration
 	// Extra labels to attach to the resulting alert sample vectors.
-	labels model.LabelSet
+	labels clientmodel.LabelSet
 
 	// Protects the below.
 	mutex sync.Mutex
 	// A map of alerts which are currently active (PENDING or FIRING), keyed by
 	// the fingerprint of the labelset they correspond to.
-	activeAlerts map[model.Fingerprint]*Alert
+	activeAlerts map[clientmodel.Fingerprint]*Alert
 }
 
 func (rule *AlertingRule) Name() string { return rule.name }
@@ -119,16 +130,17 @@ func (rule *AlertingRule) Eval(timestamp time.Time, storage *metric.TieredStorag
 	// or update the expression value for existing elements.
 	resultFingerprints := utility.Set{}
 	for _, sample := range exprResult {
-		fp := *model.NewFingerprintFromMetric(sample.Metric)
-		resultFingerprints.Add(fp)
+		fp := new(clientmodel.Fingerprint)
+		fp.LoadFromMetric(sample.Metric)
+		resultFingerprints.Add(*fp)
 
-		alert, ok := rule.activeAlerts[fp]
-		if !ok {
-			labels := sample.Metric.ToLabelSet()
-			if _, ok := labels[model.MetricNameLabel]; ok {
-				delete(labels, model.MetricNameLabel)
+		if alert, ok := rule.activeAlerts[*fp]; !ok {
+			labels := clientmodel.LabelSet{}
+			labels.MergeFromMetric(sample.Metric)
+			if _, ok := labels[clientmodel.MetricNameLabel]; ok {
+				delete(labels, clientmodel.MetricNameLabel)
 			}
-			rule.activeAlerts[fp] = &Alert{
+			rule.activeAlerts[*fp] = &Alert{
 				Name:        rule.name,
 				Labels:      labels,
 				State:       PENDING,
@@ -175,9 +187,9 @@ func (rule *AlertingRule) String() string {
 }
 
 func (rule *AlertingRule) HTMLSnippet() template.HTML {
-	alertMetric := model.Metric{
-		model.MetricNameLabel: model.AlertMetricName,
-		model.AlertNameLabel:  model.LabelValue(rule.name),
+	alertMetric := clientmodel.Metric{
+		clientmodel.MetricNameLabel: AlertMetricName,
+		AlertNameLabel:              clientmodel.LabelValue(rule.name),
 	}
 	return template.HTML(fmt.Sprintf(
 		`ALERT <a href="%s">%s</a> IF <a href="%s">%s</a> FOR %s WITH %s`,
@@ -214,12 +226,12 @@ func (rule *AlertingRule) ActiveAlerts() []Alert {
 }
 
 // Construct a new AlertingRule.
-func NewAlertingRule(name string, vector ast.VectorNode, holdDuration time.Duration, labels model.LabelSet) *AlertingRule {
+func NewAlertingRule(name string, vector ast.VectorNode, holdDuration time.Duration, labels clientmodel.LabelSet) *AlertingRule {
 	return &AlertingRule{
 		name:         name,
 		vector:       vector,
 		holdDuration: holdDuration,
 		labels:       labels,
-		activeAlerts: map[model.Fingerprint]*Alert{},
+		activeAlerts: map[clientmodel.Fingerprint]*Alert{},
 	}
 }

rules/ast/ast.go

@@ -16,25 +16,29 @@ package ast
 import (
 	"errors"
 	"fmt"
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/stats"
-	"github.com/prometheus/prometheus/storage/metric"
+	"hash/fnv"
 	"log"
 	"math"
 	"sort"
-	"strings"
 	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	"github.com/prometheus/prometheus/stats"
+	"github.com/prometheus/prometheus/storage/metric"
 )
 
 // ----------------------------------------------------------------------------
 // Raw data value types.
 
-type Vector model.Samples
-type Matrix []model.SampleSet
+type Vector clientmodel.Samples
+
+// BUG(julius): Pointerize this.
+type Matrix []metric.SampleSet
 
 type groupedAggregation struct {
-	labels     model.Metric
-	value      model.SampleValue
+	labels     clientmodel.Metric
+	value      clientmodel.SampleValue
 	groupCount int
 }
 
@@ -98,7 +102,7 @@ type Node interface {
 // interface represents the type returned to the parent node.
 type ScalarNode interface {
 	Node
-	Eval(timestamp time.Time, view *viewAdapter) model.SampleValue
+	Eval(timestamp time.Time, view *viewAdapter) clientmodel.SampleValue
 }
 
 type VectorNode interface {
@@ -123,7 +127,7 @@ type StringNode interface {
 type (
 	// A numeric literal.
 	ScalarLiteral struct {
-		value model.SampleValue
+		value clientmodel.SampleValue
 	}
 
 	// A function of numeric return type.
@@ -146,9 +150,9 @@ type (
 type (
 	// Vector literal, i.e. metric name plus labelset.
 	VectorLiteral struct {
-		labels model.LabelSet
+		labels clientmodel.LabelSet
 		// Fingerprints are populated from labels at query analysis time.
-		fingerprints model.Fingerprints
+		fingerprints clientmodel.Fingerprints
 	}
 
 	// A function of vector return type.
@@ -160,7 +164,7 @@ type (
 	// A vector aggregation with vector return type.
 	VectorAggregation struct {
 		aggrType AggrType
-		groupBy  model.LabelNames
+		groupBy  clientmodel.LabelNames
 		vector   VectorNode
 	}
 
@@ -178,9 +182,9 @@ type (
 type (
 	// Matrix literal, i.e. metric name plus labelset and timerange.
 	MatrixLiteral struct {
-		labels model.LabelSet
+		labels clientmodel.LabelSet
 		// Fingerprints are populated from labels at query analysis time.
-		fingerprints model.Fingerprints
+		fingerprints clientmodel.Fingerprints
 		interval     time.Duration
 	}
 )
@@ -228,35 +232,48 @@ func (node MatrixLiteral) Children() Nodes      { return Nodes{} }
 func (node StringLiteral) Children() Nodes      { return Nodes{} }
 func (node StringFunctionCall) Children() Nodes { return node.args }
 
-func (node *ScalarLiteral) Eval(timestamp time.Time, view *viewAdapter) model.SampleValue {
+func (node *ScalarLiteral) Eval(timestamp time.Time, view *viewAdapter) clientmodel.SampleValue {
 	return node.value
 }
 
-func (node *ScalarArithExpr) Eval(timestamp time.Time, view *viewAdapter) model.SampleValue {
+func (node *ScalarArithExpr) Eval(timestamp time.Time, view *viewAdapter) clientmodel.SampleValue {
 	lhs := node.lhs.Eval(timestamp, view)
 	rhs := node.rhs.Eval(timestamp, view)
 	return evalScalarBinop(node.opType, lhs, rhs)
 }
 
-func (node *ScalarFunctionCall) Eval(timestamp time.Time, view *viewAdapter) model.SampleValue {
-	return node.function.callFn(timestamp, view, node.args).(model.SampleValue)
+func (node *ScalarFunctionCall) Eval(timestamp time.Time, view *viewAdapter) clientmodel.SampleValue {
+	return node.function.callFn(timestamp, view, node.args).(clientmodel.SampleValue)
 }
 
-func (node *VectorAggregation) labelsToGroupingKey(labels model.Metric) string {
-	keyParts := []string{}
-	for _, keyLabel := range node.groupBy {
-		keyParts = append(keyParts, string(labels[keyLabel]))
+func (node *VectorAggregation) labelsToGroupingKey(labels clientmodel.Metric) uint64 {
+	summer := fnv.New64a()
+	for _, label := range node.groupBy {
+		fmt.Fprint(summer, labels[label])
 	}
-	return strings.Join(keyParts, ",") // TODO not safe when label value contains comma.
+
+	return summer.Sum64()
 }
 
-func labelsToKey(labels model.Metric) string {
-	keyParts := []string{}
+func labelsToKey(labels clientmodel.Metric) uint64 {
+	pairs := metric.LabelPairs{}
+
 	for label, value := range labels {
-		keyParts = append(keyParts, fmt.Sprintf("%v='%v'", label, value))
+		pairs = append(pairs, &metric.LabelPair{
+			Name:  label,
+			Value: value,
+		})
 	}
-	sort.Strings(keyParts)
-	return strings.Join(keyParts, ",") // TODO not safe when label value contains comma.
+
+	sort.Sort(pairs)
+
+	summer := fnv.New64a()
+
+	for _, pair := range pairs {
+		fmt.Fprint(summer, pair.Name, pair.Value)
+	}
+
+	return summer.Sum64()
 }
 
 func EvalVectorInstant(node VectorNode, timestamp time.Time, storage *metric.TieredStorage, queryStats *stats.TimerGroup) (vector Vector, err error) {
@@ -282,19 +299,19 @@ func EvalVectorRange(node VectorNode, start time.Time, end time.Time, interval t
 
 	// TODO implement watchdog timer for long-running queries.
 	evalTimer := queryStats.GetTimer(stats.InnerEvalTime).Start()
-	sampleSets := map[string]*model.SampleSet{}
+	sampleSets := map[uint64]*metric.SampleSet{}
 	for t := start; t.Before(end); t = t.Add(interval) {
 		vector := node.Eval(t, viewAdapter)
 		for _, sample := range vector {
-			samplePair := model.SamplePair{
+			samplePair := &metric.SamplePair{
 				Value:     sample.Value,
 				Timestamp: sample.Timestamp,
 			}
 			groupingKey := labelsToKey(sample.Metric)
 			if sampleSets[groupingKey] == nil {
-				sampleSets[groupingKey] = &model.SampleSet{
+				sampleSets[groupingKey] = &metric.SampleSet{
 					Metric: sample.Metric,
-					Values: model.Values{samplePair},
+					Values: metric.Values{samplePair},
 				}
 			} else {
 				sampleSets[groupingKey].Values = append(sampleSets[groupingKey].Values, samplePair)
@@ -312,8 +329,8 @@ func EvalVectorRange(node VectorNode, start time.Time, end time.Time, interval t
 	return matrix, nil
 }
 
-func labelIntersection(metric1, metric2 model.Metric) model.Metric {
-	intersection := model.Metric{}
+func labelIntersection(metric1, metric2 clientmodel.Metric) clientmodel.Metric {
+	intersection := clientmodel.Metric{}
 	for label, value := range metric1 {
 		if metric2[label] == value {
 			intersection[label] = value
@@ -322,18 +339,18 @@ func labelIntersection(metric1, metric2 model.Metric) model.Metric {
 	return intersection
 }
 
-func (node *VectorAggregation) groupedAggregationsToVector(aggregations map[string]*groupedAggregation, timestamp time.Time) Vector {
+func (node *VectorAggregation) groupedAggregationsToVector(aggregations map[uint64]*groupedAggregation, timestamp time.Time) Vector {
 	vector := Vector{}
 	for _, aggregation := range aggregations {
 		switch node.aggrType {
 		case AVG:
-			aggregation.value = aggregation.value / model.SampleValue(aggregation.groupCount)
+			aggregation.value = aggregation.value / clientmodel.SampleValue(aggregation.groupCount)
 		case COUNT:
-			aggregation.value = model.SampleValue(aggregation.groupCount)
+			aggregation.value = clientmodel.SampleValue(aggregation.groupCount)
 		default:
 			// For other aggregations, we already have the right value.
 		}
-		sample := model.Sample{
+		sample := &clientmodel.Sample{
 			Metric:    aggregation.labels,
 			Value:     aggregation.value,
 			Timestamp: timestamp,
@@ -345,7 +362,7 @@ func (node *VectorAggregation) groupedAggregationsToVector(aggregations map[stri
 
 func (node *VectorAggregation) Eval(timestamp time.Time, view *viewAdapter) Vector {
 	vector := node.vector.Eval(timestamp, view)
-	result := map[string]*groupedAggregation{}
+	result := map[uint64]*groupedAggregation{}
 	for _, sample := range vector {
 		groupingKey := node.labelsToGroupingKey(sample.Metric)
 		if groupedResult, ok := result[groupingKey]; ok {
@@ -377,6 +394,7 @@ func (node *VectorAggregation) Eval(timestamp time.Time, view *viewAdapter) Vect
 			}
 		}
 	}
+
 	return node.groupedAggregationsToVector(result, timestamp)
 }
 
@@ -394,8 +412,8 @@ func (node *VectorFunctionCall) Eval(timestamp time.Time, view *viewAdapter) Vec
 }
 
 func evalScalarBinop(opType BinOpType,
-	lhs model.SampleValue,
-	rhs model.SampleValue) model.SampleValue {
+	lhs clientmodel.SampleValue,
+	rhs clientmodel.SampleValue) clientmodel.SampleValue {
 	switch opType {
 	case ADD:
 		return lhs + rhs
@@ -407,13 +425,13 @@ func evalScalarBinop(opType BinOpType,
 		if rhs != 0 {
 			return lhs / rhs
 		} else {
-			return model.SampleValue(math.Inf(int(rhs)))
+			return clientmodel.SampleValue(math.Inf(int(rhs)))
 		}
 	case MOD:
 		if rhs != 0 {
-			return model.SampleValue(int(lhs) % int(rhs))
+			return clientmodel.SampleValue(int(lhs) % int(rhs))
 		} else {
-			return model.SampleValue(math.Inf(int(rhs)))
+			return clientmodel.SampleValue(math.Inf(int(rhs)))
 		}
 	case EQ:
 		if lhs == rhs {
@@ -456,8 +474,8 @@ func evalScalarBinop(opType BinOpType,
 }
 
 func evalVectorBinop(opType BinOpType,
-	lhs model.SampleValue,
-	rhs model.SampleValue) (model.SampleValue, bool) {
+	lhs clientmodel.SampleValue,
+	rhs clientmodel.SampleValue) (clientmodel.SampleValue, bool) {
 	switch opType {
 	case ADD:
 		return lhs + rhs, true
@@ -469,13 +487,13 @@ func evalVectorBinop(opType BinOpType,
 		if rhs != 0 {
 			return lhs / rhs, true
 		} else {
-			return model.SampleValue(math.Inf(int(rhs))), true
+			return clientmodel.SampleValue(math.Inf(int(rhs))), true
 		}
 	case MOD:
 		if rhs != 0 {
-			return model.SampleValue(int(lhs) % int(rhs)), true
+			return clientmodel.SampleValue(int(lhs) % int(rhs)), true
 		} else {
-			return model.SampleValue(math.Inf(int(rhs))), true
+			return clientmodel.SampleValue(math.Inf(int(rhs))), true
 		}
 	case EQ:
 		if lhs == rhs {
@@ -521,12 +539,12 @@ func evalVectorBinop(opType BinOpType,
 	panic("Not all enum values enumerated in switch")
 }
 
-func labelsEqual(labels1, labels2 model.Metric) bool {
+func labelsEqual(labels1, labels2 clientmodel.Metric) bool {
 	if len(labels1) != len(labels2) {
 		return false
 	}
 	for label, value := range labels1 {
-		if labels2[label] != value && label != model.MetricNameLabel {
+		if labels2[label] != value && label != clientmodel.MetricNameLabel {
 			return false
 		}
 	}
@@ -565,7 +583,7 @@ func (node *VectorArithExpr) Eval(timestamp time.Time, view *viewAdapter) Vector
 }
 
 func (node *MatrixLiteral) Eval(timestamp time.Time, view *viewAdapter) Matrix {
-	interval := &model.Interval{
+	interval := &metric.Interval{
 		OldestInclusive: timestamp.Add(-node.interval),
 		NewestInclusive: timestamp,
 	}
@@ -578,7 +596,7 @@ func (node *MatrixLiteral) Eval(timestamp time.Time, view *viewAdapter) Matrix {
 }
 
 func (node *MatrixLiteral) EvalBoundaries(timestamp time.Time, view *viewAdapter) Matrix {
-	interval := &model.Interval{
+	interval := &metric.Interval{
 		OldestInclusive: timestamp.Add(-node.interval),
 		NewestInclusive: timestamp,
 	}
@@ -595,7 +613,7 @@ func (matrix Matrix) Len() int {
 }
 
 func (matrix Matrix) Less(i, j int) bool {
-	return labelsToKey(matrix[i].Metric) < labelsToKey(matrix[j].Metric)
+	return matrix[i].Metric.String() < matrix[j].Metric.String()
 }
 
 func (matrix Matrix) Swap(i, j int) {
@@ -613,19 +631,19 @@ func (node *StringFunctionCall) Eval(timestamp time.Time, view *viewAdapter) str
 // ----------------------------------------------------------------------------
 // Constructors.
 
-func NewScalarLiteral(value model.SampleValue) *ScalarLiteral {
+func NewScalarLiteral(value clientmodel.SampleValue) *ScalarLiteral {
 	return &ScalarLiteral{
 		value: value,
 	}
 }
 
-func NewVectorLiteral(labels model.LabelSet) *VectorLiteral {
+func NewVectorLiteral(labels clientmodel.LabelSet) *VectorLiteral {
 	return &VectorLiteral{
 		labels: labels,
 	}
 }
 
-func NewVectorAggregation(aggrType AggrType, vector VectorNode, groupBy model.LabelNames) *VectorAggregation {
+func NewVectorAggregation(aggrType AggrType, vector VectorNode, groupBy clientmodel.LabelNames) *VectorAggregation {
 	return &VectorAggregation{
 		aggrType: aggrType,
 		groupBy:  groupBy,

rules/ast/functions.go

@@ -16,10 +16,12 @@ package ast
 import (
 	"errors"
 	"fmt"
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/utility"
 	"sort"
 	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	"github.com/prometheus/prometheus/utility"
 )
 
 type Function struct {
@@ -64,9 +66,9 @@ func (function *Function) CheckArgTypes(args []Node) error {
 	return nil
 }
 
-// === time() model.SampleValue ===
+// === time() clientmodel.SampleValue ===
 func timeImpl(timestamp time.Time, view *viewAdapter, args []Node) interface{} {
-	return model.SampleValue(time.Now().Unix())
+	return clientmodel.SampleValue(time.Now().Unix())
 }
 
 // === delta(matrix MatrixNode, isCounter ScalarNode) Vector ===
@@ -91,8 +93,8 @@ func deltaImpl(timestamp time.Time, view *viewAdapter, args []Node) interface{}
 			continue
 		}
 
-		counterCorrection := model.SampleValue(0)
-		lastValue := model.SampleValue(0)
+		counterCorrection := clientmodel.SampleValue(0)
+		lastValue := clientmodel.SampleValue(0)
 		for _, sample := range samples.Values {
 			currentValue := sample.Value
 			if isCounter && currentValue < lastValue {
@@ -116,10 +118,10 @@ func deltaImpl(timestamp time.Time, view *viewAdapter, args []Node) interface{}
 		// them. Depending on how many samples are found under a target interval,
 		// the delta results are distorted and temporal aliasing occurs (ugly
 		// bumps). This effect is corrected for below.
-		intervalCorrection := model.SampleValue(targetInterval) / model.SampleValue(sampledInterval)
+		intervalCorrection := clientmodel.SampleValue(targetInterval) / clientmodel.SampleValue(sampledInterval)
 		resultValue *= intervalCorrection
 
-		resultSample := model.Sample{
+		resultSample := &clientmodel.Sample{
 			Metric:    samples.Metric,
 			Value:     resultValue,
 			Timestamp: timestamp,
@@ -139,7 +141,7 @@ func rateImpl(timestamp time.Time, view *viewAdapter, args []Node) interface{} {
 	// matrix, such as looking at the samples themselves.
 	interval := args[0].(*MatrixLiteral).interval
 	for i := range vector {
-		vector[i].Value /= model.SampleValue(interval / time.Second)
+		vector[i].Value /= clientmodel.SampleValue(interval / time.Second)
 	}
 	return vector
 }
@@ -183,69 +185,69 @@ func sortDescImpl(timestamp time.Time, view *viewAdapter, args []Node) interface
 // === sampleVectorImpl() Vector ===
 func sampleVectorImpl(timestamp time.Time, view *viewAdapter, args []Node) interface{} {
 	return Vector{
-		model.Sample{
-			Metric: model.Metric{
-				model.MetricNameLabel: "http_requests",
-				model.JobLabel:        "api-server",
-				"instance":            "0",
+		&clientmodel.Sample{
+			Metric: clientmodel.Metric{
+				clientmodel.MetricNameLabel: "http_requests",
+				clientmodel.JobLabel:        "api-server",
+				"instance":                  "0",
 			},
 			Value:     10,
 			Timestamp: timestamp,
 		},
-		model.Sample{
-			Metric: model.Metric{
-				model.MetricNameLabel: "http_requests",
-				model.JobLabel:        "api-server",
-				"instance":            "1",
+		&clientmodel.Sample{
+			Metric: clientmodel.Metric{
+				clientmodel.MetricNameLabel: "http_requests",
+				clientmodel.JobLabel:        "api-server",
+				"instance":                  "1",
 			},
 			Value:     20,
 			Timestamp: timestamp,
 		},
-		model.Sample{
-			Metric: model.Metric{
-				model.MetricNameLabel: "http_requests",
-				model.JobLabel:        "api-server",
-				"instance":            "2",
+		&clientmodel.Sample{
+			Metric: clientmodel.Metric{
+				clientmodel.MetricNameLabel: "http_requests",
+				clientmodel.JobLabel:        "api-server",
+				"instance":                  "2",
 			},
 			Value:     30,
 			Timestamp: timestamp,
 		},
-		model.Sample{
-			Metric: model.Metric{
-				model.MetricNameLabel: "http_requests",
-				model.JobLabel:        "api-server",
-				"instance":            "3",
-				"group":               "canary",
+		&clientmodel.Sample{
+			Metric: clientmodel.Metric{
+				clientmodel.MetricNameLabel: "http_requests",
+				clientmodel.JobLabel:        "api-server",
+				"instance":                  "3",
+				"group":                     "canary",
 			},
 			Value:     40,
 			Timestamp: timestamp,
 		},
-		model.Sample{
-			Metric: model.Metric{
-				model.MetricNameLabel: "http_requests",
-				model.JobLabel:        "api-server",
-				"instance":            "2",
-				"group":               "canary",
+		&clientmodel.Sample{
+			Metric: clientmodel.Metric{
+				clientmodel.MetricNameLabel: "http_requests",
+				clientmodel.JobLabel:        "api-server",
+				"instance":                  "2",
+				"group":                     "canary",
 			},
 			Value:     40,
 			Timestamp: timestamp,
 		},
-		model.Sample{
-			Metric: model.Metric{
-				model.MetricNameLabel: "http_requests",
-				model.JobLabel:        "api-server",
-				"instance":            "3",
-				"group":               "mytest",
+		&clientmodel.Sample{
+			Metric: clientmodel.Metric{
+				clientmodel.MetricNameLabel: "http_requests",
+				clientmodel.JobLabel:        "api-server",
+				"instance":                  "3",
+				"group":                     "mytest",
 			},
 			Value:     40,
 			Timestamp: timestamp,
 		},
-		model.Sample{
-			Metric: model.Metric{
-				model.MetricNameLabel: "http_requests",
-				model.JobLabel:        "api-server",
-				"instance":            "3",
-				"group":               "mytest",
+		&clientmodel.Sample{
+			Metric: clientmodel.Metric{
+				clientmodel.MetricNameLabel: "http_requests",
+				clientmodel.JobLabel:        "api-server",
+				"instance":                  "3",
+				"group":                     "mytest",
 			},
 			Value:     40,
 			Timestamp: timestamp,

rules/ast/functions_test.go

@@ -14,9 +14,12 @@
 package ast
 
 import (
-	"github.com/prometheus/prometheus/model"
 	"testing"
 	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	"github.com/prometheus/prometheus/storage/metric"
 )
 
 type emptyRangeNode struct{}
@@ -28,18 +31,18 @@ func (node emptyRangeNode) Children() Nodes            { return Nodes{} }
 
 func (node emptyRangeNode) Eval(timestamp time.Time, view *viewAdapter) Matrix {
 	return Matrix{
-		model.SampleSet{
-			Metric: model.Metric{model.MetricNameLabel: "empty_metric"},
-			Values: model.Values{},
+		metric.SampleSet{
+			Metric: clientmodel.Metric{clientmodel.MetricNameLabel: "empty_metric"},
+			Values: metric.Values{},
 		},
 	}
 }
 
 func (node emptyRangeNode) EvalBoundaries(timestamp time.Time, view *viewAdapter) Matrix {
 	return Matrix{
-		model.SampleSet{
-			Metric: model.Metric{model.MetricNameLabel: "empty_metric"},
-			Values: model.Values{},
+		metric.SampleSet{
+			Metric: clientmodel.Metric{clientmodel.MetricNameLabel: "empty_metric"},
+			Values: metric.Values{},
 		},
 	}
 }

rules/ast/persistence_adapter.go

@@ -15,10 +15,12 @@ package ast
 
 import (
 	"flag"
-	"github.com/prometheus/prometheus/model"
+	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
 	"github.com/prometheus/prometheus/stats"
 	"github.com/prometheus/prometheus/storage/metric"
-	"time"
 )
 
 var defaultStalenessDelta = flag.Int("defaultStalenessDelta", 300, "Default staleness delta allowance in seconds during expression evaluations.")
@@ -46,14 +48,14 @@ type viewAdapter struct {
 
 // interpolateSamples interpolates a value at a target time between two
 // provided sample pairs.
-func interpolateSamples(first, second *model.SamplePair, timestamp time.Time) *model.SamplePair {
+func interpolateSamples(first, second *metric.SamplePair, timestamp time.Time) *metric.SamplePair {
 	dv := second.Value - first.Value
 	dt := second.Timestamp.Sub(first.Timestamp)
 
-	dDt := dv / model.SampleValue(dt)
-	offset := model.SampleValue(timestamp.Sub(first.Timestamp))
+	dDt := dv / clientmodel.SampleValue(dt)
+	offset := clientmodel.SampleValue(timestamp.Sub(first.Timestamp))
 
-	return &model.SamplePair{
+	return &metric.SamplePair{
 		Value:     first.Value + (offset * dDt),
 		Timestamp: timestamp,
 	}
@@ -63,9 +65,9 @@ func interpolateSamples(first, second *model.SamplePair, timestamp time.Time) *m
 // surrounding a given target time. If samples are found both before and after
 // the target time, the sample value is interpolated between these. Otherwise,
 // the single closest sample is returned verbatim.
-func (v *viewAdapter) chooseClosestSample(samples model.Values, timestamp time.Time) *model.SamplePair {
-	var closestBefore *model.SamplePair
-	var closestAfter *model.SamplePair
+func (v *viewAdapter) chooseClosestSample(samples metric.Values, timestamp time.Time) *metric.SamplePair {
+	var closestBefore *metric.SamplePair
+	var closestAfter *metric.SamplePair
 	for _, candidate := range samples {
 		delta := candidate.Timestamp.Sub(timestamp)
 		// Samples before target time.
@@ -79,7 +81,7 @@ func (v *viewAdapter) chooseClosestSample(samples model.Values, timestamp time.T
 				continue
 			}
 			sample := candidate
-			closestBefore = &sample
+			closestBefore = sample
 		}
 
 		// Samples after target time.
@@ -93,7 +95,7 @@ func (v *viewAdapter) chooseClosestSample(samples model.Values, timestamp time.T
 				continue
 			}
 			sample := candidate
-			closestAfter = &sample
+			closestAfter = sample
 		}
 	}
 
@@ -107,7 +109,7 @@ func (v *viewAdapter) chooseClosestSample(samples model.Values, timestamp time.T
 	}
 }
 
-func (v *viewAdapter) GetValueAtTime(fingerprints model.Fingerprints, timestamp time.Time) (samples Vector, err error) {
+func (v *viewAdapter) GetValueAtTime(fingerprints clientmodel.Fingerprints, timestamp time.Time) (samples Vector, err error) {
 	timer := v.stats.GetTimer(stats.GetValueAtTimeTime).Start()
 	for _, fingerprint := range fingerprints {
 		sampleCandidates := v.view.GetValueAtTime(fingerprint, timestamp)
@@ -117,7 +119,7 @@ func (v *viewAdapter) GetValueAtTime(fingerprints model.Fingerprints, timestamp
 			continue
 		}
 		if samplePair != nil {
-			samples = append(samples, model.Sample{
+			samples = append(samples, &clientmodel.Sample{
 				Metric:    m,
 				Value:     samplePair.Value,
 				Timestamp: timestamp,
@@ -128,7 +130,7 @@ func (v *viewAdapter) GetValueAtTime(fingerprints model.Fingerprints, timestamp
 	return samples, err
 }
 
-func (v *viewAdapter) GetBoundaryValues(fingerprints model.Fingerprints, interval *model.Interval) (sampleSets []model.SampleSet, err error) {
+func (v *viewAdapter) GetBoundaryValues(fingerprints clientmodel.Fingerprints, interval *metric.Interval) (sampleSets []metric.SampleSet, err error) {
 	timer := v.stats.GetTimer(stats.GetBoundaryValuesTime).Start()
 	for _, fingerprint := range fingerprints {
 		samplePairs := v.view.GetBoundaryValues(fingerprint, *interval)
@@ -142,7 +144,7 @@ func (v *viewAdapter) GetBoundaryValues(fingerprints model.Fingerprints, interva
 			continue
 		}
 
-		sampleSet := model.SampleSet{
+		sampleSet := metric.SampleSet{
 			Metric: m,
 			Values: samplePairs,
 		}
@@ -152,7 +154,7 @@ func (v *viewAdapter) GetBoundaryValues(fingerprints model.Fingerprints, interva
 	return sampleSets, nil
 }
 
-func (v *viewAdapter) GetRangeValues(fingerprints model.Fingerprints, interval *model.Interval) (sampleSets []model.SampleSet, err error) {
+func (v *viewAdapter) GetRangeValues(fingerprints clientmodel.Fingerprints, interval *metric.Interval) (sampleSets []metric.SampleSet, err error) {
 	timer := v.stats.GetTimer(stats.GetRangeValuesTime).Start()
 	for _, fingerprint := range fingerprints {
 		samplePairs := v.view.GetRangeValues(fingerprint, *interval)
@@ -166,7 +168,7 @@ func (v *viewAdapter) GetRangeValues(fingerprints model.Fingerprints, interval *
 			continue
 		}
 
-		sampleSet := model.SampleSet{
+		sampleSet := metric.SampleSet{
 			Metric: m,
 			Values: samplePairs,
 		}

rules/ast/printer.go

@@ -16,13 +16,15 @@ package ast
 import (
 	"encoding/json"
 	"fmt"
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/stats"
-	"github.com/prometheus/prometheus/storage/metric"
-	"github.com/prometheus/prometheus/utility"
 	"sort"
 	"strings"
 	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	"github.com/prometheus/prometheus/stats"
+	"github.com/prometheus/prometheus/storage/metric"
+	"github.com/prometheus/prometheus/utility"
 )
 
 type OutputFormat int
@@ -86,13 +88,13 @@ func (vector Vector) String() string {
 func (matrix Matrix) String() string {
 	metricStrings := make([]string, 0, len(matrix))
 	for _, sampleSet := range matrix {
-		metricName, ok := sampleSet.Metric[model.MetricNameLabel]
+		metricName, ok := sampleSet.Metric[clientmodel.MetricNameLabel]
 		if !ok {
 			panic("Tried to print matrix without metric name")
 		}
 		labelStrings := make([]string, 0, len(sampleSet.Metric)-1)
 		for label, value := range sampleSet.Metric {
-			if label != model.MetricNameLabel {
+			if label != clientmodel.MetricNameLabel {
 				labelStrings = append(labelStrings, fmt.Sprintf("%s=%q", label, value))
 			}
 		}
@@ -296,13 +298,13 @@ func (node *ScalarArithExpr) String() string {
 }
 
 func (node *VectorLiteral) String() string {
-	metricName, ok := node.labels[model.MetricNameLabel]
+	metricName, ok := node.labels[clientmodel.MetricNameLabel]
 	if !ok {
 		panic("Tried to print vector without metric name")
 	}
 	labelStrings := make([]string, 0, len(node.labels)-1)
 	for label, value := range node.labels {
-		if label != model.MetricNameLabel {
+		if label != clientmodel.MetricNameLabel {
 			labelStrings = append(labelStrings, fmt.Sprintf("%s=%q", label, value))
 		}
 	}

rules/ast/query_analyzer.go

@@ -14,15 +14,17 @@
 package ast
 
 import (
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/stats"
-	"github.com/prometheus/prometheus/storage/metric"
 	"log"
 	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	"github.com/prometheus/prometheus/stats"
+	"github.com/prometheus/prometheus/storage/metric"
 )
 
-type FullRangeMap map[model.Fingerprint]time.Duration
-type IntervalRangeMap map[model.Fingerprint]bool
+type FullRangeMap map[clientmodel.Fingerprint]time.Duration
+type IntervalRangeMap map[clientmodel.Fingerprint]bool
 
 type QueryAnalyzer struct {
 	// Values collected by query analysis.
@@ -105,10 +107,10 @@ func viewAdapterForInstantQuery(node Node, timestamp time.Time, storage *metric.
 	requestBuildTimer := queryStats.GetTimer(stats.ViewRequestBuildTime).Start()
 	viewBuilder := metric.NewViewRequestBuilder()
 	for fingerprint, rangeDuration := range analyzer.FullRanges {
-		viewBuilder.GetMetricRange(fingerprint, timestamp.Add(-rangeDuration), timestamp)
+		viewBuilder.GetMetricRange(&fingerprint, timestamp.Add(-rangeDuration), timestamp)
 	}
 	for fingerprint := range analyzer.IntervalRanges {
-		viewBuilder.GetMetricAtTime(fingerprint, timestamp)
+		viewBuilder.GetMetricAtTime(&fingerprint, timestamp)
 	}
 	requestBuildTimer.Stop()
 
@@ -132,11 +134,11 @@ func viewAdapterForRangeQuery(node Node, start time.Time, end time.Time, interva
 	for fingerprint, rangeDuration := range analyzer.FullRanges {
 		// TODO: we should support GetMetricRangeAtInterval() or similar ops in the view builder.
 		for t := start; t.Before(end); t = t.Add(interval) {
-			viewBuilder.GetMetricRange(fingerprint, t.Add(-rangeDuration), t)
+			viewBuilder.GetMetricRange(&fingerprint, t.Add(-rangeDuration), t)
 		}
 	}
 	for fingerprint := range analyzer.IntervalRanges {
-		viewBuilder.GetMetricAtInterval(fingerprint, start, end, interval)
+		viewBuilder.GetMetricAtInterval(&fingerprint, start, end, interval)
 	}
 	requestBuildTimer.Stop()
 

rules/helpers.go

@@ -17,19 +17,20 @@ import (
 	"fmt"
 	"html"
 
-	"github.com/prometheus/prometheus/model"
+	clientmodel "github.com/prometheus/client_golang/model"
+
 	"github.com/prometheus/prometheus/rules/ast"
 	"github.com/prometheus/prometheus/utility"
 )
 
-func CreateRecordingRule(name string, labels model.LabelSet, expr ast.Node, permanent bool) (*RecordingRule, error) {
+func CreateRecordingRule(name string, labels clientmodel.LabelSet, expr ast.Node, permanent bool) (*RecordingRule, error) {
 	if _, ok := expr.(ast.VectorNode); !ok {
 		return nil, fmt.Errorf("Recording rule expression %v does not evaluate to vector type", expr)
 	}
 	return NewRecordingRule(name, labels, expr.(ast.VectorNode), permanent), nil
 }
 
-func CreateAlertingRule(name string, expr ast.Node, holdDurationStr string, labels model.LabelSet) (*AlertingRule, error) {
+func CreateAlertingRule(name string, expr ast.Node, holdDurationStr string, labels clientmodel.LabelSet) (*AlertingRule, error) {
 	if _, ok := expr.(ast.VectorNode); !ok {
 		return nil, fmt.Errorf("Alert rule expression %v does not evaluate to vector type", expr)
 	}
@@ -52,7 +53,7 @@ func NewFunctionCall(name string, args []ast.Node) (ast.Node, error) {
 	return functionCall, nil
 }
 
-func NewVectorAggregation(aggrTypeStr string, vector ast.Node, groupBy model.LabelNames) (*ast.VectorAggregation, error) {
+func NewVectorAggregation(aggrTypeStr string, vector ast.Node, groupBy clientmodel.LabelNames) (*ast.VectorAggregation, error) {
 	if _, ok := vector.(ast.VectorNode); !ok {
 		return nil, fmt.Errorf("Operand of %v aggregation must be of vector type", aggrTypeStr)
 	}

rules/helpers_test.go

@@ -14,19 +14,21 @@
 package rules
 
 import (
-	"github.com/prometheus/prometheus/model"
+	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
 	"github.com/prometheus/prometheus/rules/ast"
 	"github.com/prometheus/prometheus/storage/metric"
-	"time"
 )
 
 var testSampleInterval = time.Duration(5) * time.Minute
 var testStartTime = time.Time{}
 
-func getTestValueStream(startVal model.SampleValue, endVal model.SampleValue, stepVal model.SampleValue, startTime time.Time) (resultValues model.Values) {
+func getTestValueStream(startVal clientmodel.SampleValue, endVal clientmodel.SampleValue, stepVal clientmodel.SampleValue, startTime time.Time) (resultValues metric.Values) {
 	currentTime := startTime
 	for currentVal := startVal; currentVal <= endVal; currentVal += stepVal {
-		sample := model.SamplePair{
+		sample := &metric.SamplePair{
 			Value:     currentVal,
 			Timestamp: currentTime,
 		}
@@ -40,7 +42,7 @@ func getTestVectorFromTestMatrix(matrix ast.Matrix) ast.Vector {
 	vector := ast.Vector{}
 	for _, sampleSet := range matrix {
 		lastSample := sampleSet.Values[len(sampleSet.Values)-1]
-		vector = append(vector, model.Sample{
+		vector = append(vector, &clientmodel.Sample{
 			Metric:    sampleSet.Metric,
 			Value:     lastSample.Value,
 			Timestamp: lastSample.Timestamp,
@@ -50,10 +52,10 @@ func getTestVectorFromTestMatrix(matrix ast.Matrix) ast.Vector {
 }
 
 func storeMatrix(storage metric.TieredStorage, matrix ast.Matrix) (err error) {
-	pendingSamples := model.Samples{}
+	pendingSamples := clientmodel.Samples{}
 	for _, sampleSet := range matrix {
 		for _, sample := range sampleSet.Values {
-			pendingSamples = append(pendingSamples, model.Sample{
+			pendingSamples = append(pendingSamples, &clientmodel.Sample{
 				Metric:    sampleSet.Metric,
 				Value:     sample.Value,
 				Timestamp: sample.Timestamp,
@@ -66,96 +68,96 @@ func storeMatrix(storage metric.TieredStorage, matrix ast.Matrix) (err error) {
 
 var testMatrix = ast.Matrix{
 	{
-		Metric: model.Metric{
-			model.MetricNameLabel: "http_requests",
-			model.JobLabel:        "api-server",
-			"instance":            "0",
-			"group":               "production",
+		Metric: clientmodel.Metric{
+			clientmodel.MetricNameLabel: "http_requests",
+			clientmodel.JobLabel:        "api-server",
+			"instance":                  "0",
+			"group":                     "production",
 		},
 		Values: getTestValueStream(0, 100, 10, testStartTime),
 	},
 	{
-		Metric: model.Metric{
-			model.MetricNameLabel: "http_requests",
-			model.JobLabel:        "api-server",
-			"instance":            "1",
-			"group":               "production",
+		Metric: clientmodel.Metric{
+			clientmodel.MetricNameLabel: "http_requests",
+			clientmodel.JobLabel:        "api-server",
+			"instance":                  "1",
+			"group":                     "production",
 		},
 		Values: getTestValueStream(0, 200, 20, testStartTime),
 	},
 	{
-		Metric: model.Metric{
-			model.MetricNameLabel: "http_requests",
-			model.JobLabel:        "api-server",
-			"instance":            "0",
-			"group":               "canary",
+		Metric: clientmodel.Metric{
+			clientmodel.MetricNameLabel: "http_requests",
+			clientmodel.JobLabel:        "api-server",
+			"instance":                  "0",
+			"group":                     "canary",
 		},
 		Values: getTestValueStream(0, 300, 30, testStartTime),
 	},
 	{
-		Metric: model.Metric{
-			model.MetricNameLabel: "http_requests",
-			model.JobLabel:        "api-server",
-			"instance":            "1",
-			"group":               "canary",
+		Metric: clientmodel.Metric{
+			clientmodel.MetricNameLabel: "http_requests",
+			clientmodel.JobLabel:        "api-server",
+			"instance":                  "1",
+			"group":                     "canary",
 		},
 		Values: getTestValueStream(0, 400, 40, testStartTime),
 	},
 	{
-		Metric: model.Metric{
-			model.MetricNameLabel: "http_requests",
-			model.JobLabel:        "app-server",
-			"instance":            "0",
-			"group":               "production",
+		Metric: clientmodel.Metric{
+			clientmodel.MetricNameLabel: "http_requests",
+			clientmodel.JobLabel:        "app-server",
+			"instance":                  "0",
+			"group":                     "production",
 		},
 		Values: getTestValueStream(0, 500, 50, testStartTime),
 	},
 	{
-		Metric: model.Metric{
-			model.MetricNameLabel: "http_requests",
-			model.JobLabel:        "app-server",
-			"instance":            "1",
-			"group":               "production",
+		Metric: clientmodel.Metric{
+			clientmodel.MetricNameLabel: "http_requests",
+			clientmodel.JobLabel:        "app-server",
+			"instance":                  "1",
+			"group":                     "production",
 		},
 		Values: getTestValueStream(0, 600, 60, testStartTime),
 	},
 	{
-		Metric: model.Metric{
-			model.MetricNameLabel: "http_requests",
-			model.JobLabel:        "app-server",
-			"instance":            "0",
-			"group":               "canary",
+		Metric: clientmodel.Metric{
+			clientmodel.MetricNameLabel: "http_requests",
+			clientmodel.JobLabel:        "app-server",
+			"instance":                  "0",
+			"group":                     "canary",
 		},
 		Values: getTestValueStream(0, 700, 70, testStartTime),
 	},
 	{
-		Metric: model.Metric{
-			model.MetricNameLabel: "http_requests",
-			model.JobLabel:        "app-server",
-			"instance":            "1",
-			"group":               "canary",
+		Metric: clientmodel.Metric{
+			clientmodel.MetricNameLabel: "http_requests",
+			clientmodel.JobLabel:        "app-server",
+			"instance":                  "1",
+			"group":                     "canary",
 		},
 		Values: getTestValueStream(0, 800, 80, testStartTime),
 	},
 	// Single-letter metric and label names.
 	{
-		Metric: model.Metric{
-			model.MetricNameLabel: "x",
+		Metric: clientmodel.Metric{
+			clientmodel.MetricNameLabel: "x",
 			"y": "testvalue",
 		},
 		Values: getTestValueStream(0, 100, 10, testStartTime),
 	},
 	// Counter reset in the middle of range.
 	{
-		Metric: model.Metric{
-			model.MetricNameLabel: "testcounter_reset_middle",
+		Metric: clientmodel.Metric{
+			clientmodel.MetricNameLabel: "testcounter_reset_middle",
 		},
 		Values: append(getTestValueStream(0, 40, 10, testStartTime), getTestValueStream(0, 50, 10, testStartTime.Add(testSampleInterval*5))...),
 	},
 	// Counter reset at the end of range.
 	{
-		Metric: model.Metric{
-			model.MetricNameLabel: "testcounter_reset_end",
+		Metric: clientmodel.Metric{
+			clientmodel.MetricNameLabel: "testcounter_reset_end",
 		},
 		Values: append(getTestValueStream(0, 90, 10, testStartTime), getTestValueStream(0, 0, 10, testStartTime.Add(testSampleInterval*10))...),
 	},

rules/lexer.l

@@ -15,9 +15,10 @@
 package rules
 
 import (
-        "github.com/prometheus/prometheus/model"
         "strconv"
         "strings"
+
+        clientmodel "github.com/prometheus/client_golang/model"
 )
 %}
 
@@ -58,7 +59,7 @@ avg|sum|max|min|count    { yylval.str = strings.ToUpper(yytext); return AGGR_OP
                            if (err != nil && err.(*strconv.NumError).Err == strconv.ErrSyntax) {
                              panic("Invalid float")
                            }
-                           yylval.num = model.SampleValue(num)
+                           yylval.num = clientmodel.SampleValue(num)
                            return NUMBER }
 
 \"(\\.|[^\\"])*\"        { yylval.str = yytext[1:len(yytext) - 1]; return STRING }

rules/lexer.l.go

@@ -1,7 +1,6 @@
 // Generated by golex
 package rules
 
-
 import (
 	"bufio"
 	"io"
@@ -10,9 +9,10 @@ import (
 	"sort"
 )
 import (
-"github.com/prometheus/prometheus/model"
-"strconv"
-"strings"
+	"strconv"
+	"strings"
+
+	clientmodel "github.com/prometheus/client_golang/model"
 )
 
 var yyin io.Reader = os.Stdin
@@ -32,6 +32,7 @@ type yyactionreturn struct {
 }
 
 type yyactionreturntype int
+
 const (
 	yyRT_FALLTHROUGH yyactionreturntype = iota
 	yyRT_USER_RETURN
@@ -44,6 +45,7 @@ var yyorigidx int
 
 var yytext string = ""
 var yytextrepl bool = true
+
 func yymore() {
 	yytextrepl = false
 }
@@ -61,6 +63,7 @@ func yyREJECT() {
 }
 
 var yylessed int
+
 func yyless(n int) {
 	yylessed = len(yytext) - n
 }
@@ -81,13 +84,14 @@ func input() int {
 }
 
 var EOF int = -1
+
 type yystartcondition int
 
 var INITIAL yystartcondition = 0
 var YY_START yystartcondition = INITIAL
 
 type yylexMatch struct {
-	index	  int
+	index     int
 	matchFunc func() yyactionreturn
 	sortLen   int
 	advLen    int
@@ -221,8 +225,9 @@ func yylex() int {
 
 	return 0
 }
+
 var S_COMMENTS yystartcondition = 1024
-var yystartconditionexclmap = map[yystartcondition]bool{S_COMMENTS: true, }
+var yystartconditionexclmap = map[yystartcondition]bool{S_COMMENTS: true}
 var yyrules []yyrule = []yyrule{{regexp.MustCompile("[^\\n]"), nil, []yystartcondition{}, false, func() (yyar yyactionreturn) {
 	defer func() {
 		if r := recover(); r != nil {
@@ -265,7 +270,7 @@ var yyrules []yyrule = []yyrule{{regexp.MustCompile("[^\\n]"), nil, []yystartcon
 		yyBEGIN(S_COMMENTS)
 	}
 	return yyactionreturn{0, yyRT_FALLTHROUGH}
-}}, {regexp.MustCompile("\\*/"), nil, []yystartcondition{S_COMMENTS, }, false, func() (yyar yyactionreturn) {
+}}, {regexp.MustCompile("\\*/"), nil, []yystartcondition{S_COMMENTS}, false, func() (yyar yyactionreturn) {
 	defer func() {
 		if r := recover(); r != nil {
 			if r != "yyREJECT" {
@@ -278,7 +283,7 @@ var yyrules []yyrule = []yyrule{{regexp.MustCompile("[^\\n]"), nil, []yystartcon
 		yyBEGIN(0)
 	}
 	return yyactionreturn{0, yyRT_FALLTHROUGH}
-}}, {regexp.MustCompile("[^\\n]"), nil, []yystartcondition{S_COMMENTS, }, false, func() (yyar yyactionreturn) {
+}}, {regexp.MustCompile("[^\\n]"), nil, []yystartcondition{S_COMMENTS}, false, func() (yyar yyactionreturn) {
 	defer func() {
 		if r := recover(); r != nil {
 			if r != "yyREJECT" {
@@ -506,7 +511,7 @@ var yyrules []yyrule = []yyrule{{regexp.MustCompile("[^\\n]"), nil, []yystartcon
 		if err != nil && err.(*strconv.NumError).Err == strconv.ErrSyntax {
 			panic("Invalid float")
 		}
-		yylval.num = model.SampleValue(num)
+		yylval.num = clientmodel.SampleValue(num)
 		return yyactionreturn{NUMBER, yyRT_USER_RETURN}
 	}
 	return yyactionreturn{0, yyRT_FALLTHROUGH}
@@ -575,5 +580,6 @@ var yyrules []yyrule = []yyrule{{regexp.MustCompile("[^\\n]"), nil, []yystartcon
 	{
 	}
 	return yyactionreturn{0, yyRT_FALLTHROUGH}
-}}, }
+}}}
+
 func yyactioninline(BEGIN func(yystartcondition)) {}

rules/manager.go

@@ -14,18 +14,16 @@
 package rules
 
 import (
-	"github.com/prometheus/prometheus/config"
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/storage/metric"
 	"log"
 	"sync"
 	"time"
-)
 
-type Result struct {
-	Err     error // TODO propagate errors from rule evaluation.
-	Samples model.Samples
-}
+	"github.com/prometheus/client_golang/extraction"
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	"github.com/prometheus/prometheus/config"
+	"github.com/prometheus/prometheus/storage/metric"
+)
 
 type RuleManager interface {
 	// Load and add rules from rule files specified in the configuration.
@@ -45,13 +43,13 @@ type ruleManager struct {
 	sync.Mutex
 	rules []Rule
 
-	results  chan *Result
+	results  chan<- *extraction.Result
 	done     chan bool
 	interval time.Duration
 	storage  *metric.TieredStorage
 }
 
-func NewRuleManager(results chan *Result, interval time.Duration, storage *metric.TieredStorage) RuleManager {
+func NewRuleManager(results chan<- *extraction.Result, interval time.Duration, storage *metric.TieredStorage) RuleManager {
 	manager := &ruleManager{
 		results:  results,
 		rules:    []Rule{},
@@ -86,7 +84,7 @@ func (m *ruleManager) Stop() {
 	}
 }
 
-func (m *ruleManager) runIteration(results chan *Result) {
+func (m *ruleManager) runIteration(results chan<- *extraction.Result) {
 	now := time.Now()
 	wg := sync.WaitGroup{}
 
@@ -101,9 +99,9 @@ func (m *ruleManager) runIteration(results chan *Result) {
 		go func(rule Rule) {
 			defer wg.Done()
 			vector, err := rule.Eval(now, m.storage)
-			samples := make(model.Samples, len(vector))
+			samples := make(clientmodel.Samples, len(vector))
 			copy(samples, vector)
-			m.results <- &Result{
+			m.results <- &extraction.Result{
 				Samples: samples,
 				Err:     err,
 			}

rules/parser.y

@@ -14,18 +14,21 @@
 %{
         package rules
 
-        import "github.com/prometheus/prometheus/model"
+import (
+        clientmodel "github.com/prometheus/client_golang/model"
+
         import "github.com/prometheus/prometheus/rules/ast"
+        )
 %}
 
 %union {
-        num model.SampleValue
+        num clientmodel.SampleValue
         str string
         ruleNode ast.Node
         ruleNodeSlice []ast.Node
         boolean bool
-        labelNameSlice model.LabelNames
-        labelSet model.LabelSet
+        labelNameSlice clientmodel.LabelNames
+        labelSet clientmodel.LabelSet
 }
 
 /* We simulate multiple start symbols for closely-related grammars via dummy tokens. See
@@ -93,11 +96,11 @@ qualifier          : /* empty */
                    ;
 
 rule_labels        : /* empty */
-                     { $$ = model.LabelSet{} }
+                     { $$ = clientmodel.LabelSet{} }
                    | '{' label_assign_list '}'
                      { $$ = $2  }
                    | '{' '}'
-                     { $$ = model.LabelSet{} }
+                     { $$ = clientmodel.LabelSet{} }
 
 label_assign_list  : label_assign
                      { $$ = $1 }
@@ -106,14 +109,14 @@ label_assign_list  : label_assign
                    ;
 
 label_assign       : IDENTIFIER '=' STRING
-                     { $$ = model.LabelSet{ model.LabelName($1): model.LabelValue($3) } }
+                     { $$ = clientmodel.LabelSet{ clientmodel.LabelName($1): clientmodel.LabelValue($3) } }
                    ;
 
 
 rule_expr          : '(' rule_expr ')'
                      { $$ = $2 }
                    | IDENTIFIER rule_labels
-                     { $2[model.MetricNameLabel] = model.LabelValue($1); $$ = ast.NewVectorLiteral($2) }
+                     { $2[clientmodel.MetricNameLabel] = clientmodel.LabelValue($1); $$ = ast.NewVectorLiteral($2) }
                    | IDENTIFIER '(' func_arg_list ')'
                      {
                        var err error
@@ -163,15 +166,15 @@ rule_expr          : '(' rule_expr ')'
                    ;
 
 grouping_opts      :
-                     { $$ = model.LabelNames{} }
+                     { $$ = clientmodel.LabelNames{} }
                    | GROUP_OP '(' label_list ')'
                      { $$ = $3 }
                    ;
 
 label_list         : IDENTIFIER
-                     { $$ = model.LabelNames{model.LabelName($1)} }
+                     { $$ = clientmodel.LabelNames{clientmodel.LabelName($1)} }
                    | label_list ',' IDENTIFIER
-                     { $$ = append($$, model.LabelName($3)) }
+                     { $$ = append($$, clientmodel.LabelName($3)) }
                    ;
 
 func_arg_list      : func_arg

rules/parser.y.go

@@ -1,22 +1,22 @@
+//line parser.y:15
+package rules
+
+import __yyfmt__ "fmt"
 
 //line parser.y:15
-        package rules
-import __yyfmt__ "fmt"
-//line parser.y:15
-		
-        import "github.com/prometheus/prometheus/model"
-        import "github.com/prometheus/prometheus/rules/ast"
+import clientmodel "github.com/prometheus/client_golang/model"
+import "github.com/prometheus/prometheus/rules/ast"
 
 //line parser.y:21
 type yySymType struct {
-	yys int
-        num model.SampleValue
-        str string
-        ruleNode ast.Node
-        ruleNodeSlice []ast.Node
-        boolean bool
-        labelNameSlice model.LabelNames
-        labelSet model.LabelSet
+	yys            int
+	num            clientmodel.SampleValue
+	str            string
+	ruleNode       ast.Node
+	ruleNodeSlice  []ast.Node
+	boolean        bool
+	labelNameSlice clientmodel.LabelNames
+	labelSet       clientmodel.LabelSet
 }
 
 const START_RULES = 57346
@@ -63,7 +63,6 @@ const yyMaxDepth = 200
 
 //line parser.y:188
 
-
 //line yacctab:1
 var yyExca = []int{
 	-1, 1,
@@ -396,133 +395,207 @@ yydefault:
 
 	case 5:
 		//line parser.y:66
-		{ yylex.(*RulesLexer).parsedExpr = yyS[yypt-0].ruleNode }
+		{
+			yylex.(*RulesLexer).parsedExpr = yyS[yypt-0].ruleNode
+		}
 	case 6:
 		//line parser.y:70
 		{
-	                       rule, err := CreateRecordingRule(yyS[yypt-3].str, yyS[yypt-2].labelSet, yyS[yypt-0].ruleNode, yyS[yypt-4].boolean)
-	                       if err != nil { yylex.Error(err.Error()); return 1 }
-	                       yylex.(*RulesLexer).parsedRules = append(yylex.(*RulesLexer).parsedRules, rule)
-	                     }
+			rule, err := CreateRecordingRule(yyS[yypt-3].str, yyS[yypt-2].labelSet, yyS[yypt-0].ruleNode, yyS[yypt-4].boolean)
+			if err != nil {
+				yylex.Error(err.Error())
+				return 1
+			}
+			yylex.(*RulesLexer).parsedRules = append(yylex.(*RulesLexer).parsedRules, rule)
+		}
 	case 7:
 		//line parser.y:76
 		{
-	                       rule, err := CreateAlertingRule(yyS[yypt-5].str, yyS[yypt-3].ruleNode, yyS[yypt-2].str, yyS[yypt-0].labelSet)
-	                       if err != nil { yylex.Error(err.Error()); return 1 }
-	                       yylex.(*RulesLexer).parsedRules = append(yylex.(*RulesLexer).parsedRules, rule)
-	                     }
+			rule, err := CreateAlertingRule(yyS[yypt-5].str, yyS[yypt-3].ruleNode, yyS[yypt-2].str, yyS[yypt-0].labelSet)
+			if err != nil {
+				yylex.Error(err.Error())
+				return 1
+			}
+			yylex.(*RulesLexer).parsedRules = append(yylex.(*RulesLexer).parsedRules, rule)
+		}
 	case 8:
 		//line parser.y:84
-		{ yyVAL.str = "0s" }
+		{
+			yyVAL.str = "0s"
+		}
 	case 9:
 		//line parser.y:86
-		{ yyVAL.str = yyS[yypt-0].str }
+		{
+			yyVAL.str = yyS[yypt-0].str
+		}
 	case 10:
 		//line parser.y:90
-		{ yyVAL.boolean = false }
+		{
+			yyVAL.boolean = false
+		}
 	case 11:
 		//line parser.y:92
-		{ yyVAL.boolean = true }
+		{
+			yyVAL.boolean = true
+		}
 	case 12:
 		//line parser.y:96
-		{ yyVAL.labelSet = model.LabelSet{} }
+		{
+			yyVAL.labelSet = clientmodel.LabelSet{}
+		}
 	case 13:
 		//line parser.y:98
-		{ yyVAL.labelSet = yyS[yypt-1].labelSet  }
+		{
+			yyVAL.labelSet = yyS[yypt-1].labelSet
+		}
 	case 14:
 		//line parser.y:100
-		{ yyVAL.labelSet = model.LabelSet{} }
+		{
+			yyVAL.labelSet = clientmodel.LabelSet{}
+		}
 	case 15:
 		//line parser.y:103
-		{ yyVAL.labelSet = yyS[yypt-0].labelSet }
+		{
+			yyVAL.labelSet = yyS[yypt-0].labelSet
+		}
 	case 16:
 		//line parser.y:105
-		{ for k, v := range yyS[yypt-0].labelSet { yyVAL.labelSet[k] = v } }
+		{
+			for k, v := range yyS[yypt-0].labelSet {
+				yyVAL.labelSet[k] = v
+			}
+		}
 	case 17:
 		//line parser.y:109
-		{ yyVAL.labelSet = model.LabelSet{ model.LabelName(yyS[yypt-2].str): model.LabelValue(yyS[yypt-0].str) } }
+		{
+			yyVAL.labelSet = clientmodel.LabelSet{clientmodel.LabelName(yyS[yypt-2].str): clientmodel.LabelValue(yyS[yypt-0].str)}
+		}
 	case 18:
 		//line parser.y:114
-		{ yyVAL.ruleNode = yyS[yypt-1].ruleNode }
+		{
+			yyVAL.ruleNode = yyS[yypt-1].ruleNode
+		}
 	case 19:
 		//line parser.y:116
-		{ yyS[yypt-0].labelSet[model.MetricNameLabel] = model.LabelValue(yyS[yypt-1].str); yyVAL.ruleNode = ast.NewVectorLiteral(yyS[yypt-0].labelSet) }
+		{
+			yyS[yypt-0].labelSet[clientmodel.MetricNameLabel] = clientmodel.LabelValue(yyS[yypt-1].str)
+			yyVAL.ruleNode = ast.NewVectorLiteral(yyS[yypt-0].labelSet)
+		}
 	case 20:
 		//line parser.y:118
 		{
-	                       var err error
-	                       yyVAL.ruleNode, err = NewFunctionCall(yyS[yypt-3].str, yyS[yypt-1].ruleNodeSlice)
-	                       if err != nil { yylex.Error(err.Error()); return 1 }
-	                     }
+			var err error
+			yyVAL.ruleNode, err = NewFunctionCall(yyS[yypt-3].str, yyS[yypt-1].ruleNodeSlice)
+			if err != nil {
+				yylex.Error(err.Error())
+				return 1
+			}
+		}
 	case 21:
 		//line parser.y:124
 		{
-	                       var err error
-	                       yyVAL.ruleNode, err = NewFunctionCall(yyS[yypt-2].str, []ast.Node{})
-	                       if err != nil { yylex.Error(err.Error()); return 1 }
-	                     }
+			var err error
+			yyVAL.ruleNode, err = NewFunctionCall(yyS[yypt-2].str, []ast.Node{})
+			if err != nil {
+				yylex.Error(err.Error())
+				return 1
+			}
+		}
 	case 22:
 		//line parser.y:130
 		{
-	                       var err error
-	                       yyVAL.ruleNode, err = NewMatrix(yyS[yypt-3].ruleNode, yyS[yypt-1].str)
-	                       if err != nil { yylex.Error(err.Error()); return 1 }
-	                     }
+			var err error
+			yyVAL.ruleNode, err = NewMatrix(yyS[yypt-3].ruleNode, yyS[yypt-1].str)
+			if err != nil {
+				yylex.Error(err.Error())
+				return 1
+			}
+		}
 	case 23:
 		//line parser.y:136
 		{
-	                       var err error
-	                       yyVAL.ruleNode, err = NewVectorAggregation(yyS[yypt-4].str, yyS[yypt-2].ruleNode, yyS[yypt-0].labelNameSlice)
-	                       if err != nil { yylex.Error(err.Error()); return 1 }
-	                     }
+			var err error
+			yyVAL.ruleNode, err = NewVectorAggregation(yyS[yypt-4].str, yyS[yypt-2].ruleNode, yyS[yypt-0].labelNameSlice)
+			if err != nil {
+				yylex.Error(err.Error())
+				return 1
+			}
+		}
 	case 24:
 		//line parser.y:144
 		{
-	                       var err error
-	                       yyVAL.ruleNode, err = NewArithExpr(yyS[yypt-1].str, yyS[yypt-2].ruleNode, yyS[yypt-0].ruleNode)
-	                       if err != nil { yylex.Error(err.Error()); return 1 }
-	                     }
+			var err error
+			yyVAL.ruleNode, err = NewArithExpr(yyS[yypt-1].str, yyS[yypt-2].ruleNode, yyS[yypt-0].ruleNode)
+			if err != nil {
+				yylex.Error(err.Error())
+				return 1
+			}
+		}
 	case 25:
 		//line parser.y:150
 		{
-	                       var err error
-	                       yyVAL.ruleNode, err = NewArithExpr(yyS[yypt-1].str, yyS[yypt-2].ruleNode, yyS[yypt-0].ruleNode)
-	                       if err != nil { yylex.Error(err.Error()); return 1 }
-	                     }
+			var err error
+			yyVAL.ruleNode, err = NewArithExpr(yyS[yypt-1].str, yyS[yypt-2].ruleNode, yyS[yypt-0].ruleNode)
+			if err != nil {
+				yylex.Error(err.Error())
+				return 1
+			}
+		}
 	case 26:
 		//line parser.y:156
 		{
-	                       var err error
-	                       yyVAL.ruleNode, err = NewArithExpr(yyS[yypt-1].str, yyS[yypt-2].ruleNode, yyS[yypt-0].ruleNode)
-	                       if err != nil { yylex.Error(err.Error()); return 1 }
-	                     }
+			var err error
+			yyVAL.ruleNode, err = NewArithExpr(yyS[yypt-1].str, yyS[yypt-2].ruleNode, yyS[yypt-0].ruleNode)
+			if err != nil {
+				yylex.Error(err.Error())
+				return 1
+			}
+		}
 	case 27:
 		//line parser.y:162
-		{ yyVAL.ruleNode = ast.NewScalarLiteral(yyS[yypt-0].num)}
+		{
+			yyVAL.ruleNode = ast.NewScalarLiteral(yyS[yypt-0].num)
+		}
 	case 28:
 		//line parser.y:166
-		{ yyVAL.labelNameSlice = model.LabelNames{} }
+		{
+			yyVAL.labelNameSlice = clientmodel.LabelNames{}
+		}
 	case 29:
 		//line parser.y:168
-		{ yyVAL.labelNameSlice = yyS[yypt-1].labelNameSlice }
+		{
+			yyVAL.labelNameSlice = yyS[yypt-1].labelNameSlice
+		}
 	case 30:
 		//line parser.y:172
-		{ yyVAL.labelNameSlice = model.LabelNames{model.LabelName(yyS[yypt-0].str)} }
+		{
+			yyVAL.labelNameSlice = clientmodel.LabelNames{clientmodel.LabelName(yyS[yypt-0].str)}
+		}
 	case 31:
 		//line parser.y:174
-		{ yyVAL.labelNameSlice = append(yyVAL.labelNameSlice, model.LabelName(yyS[yypt-0].str)) }
+		{
+			yyVAL.labelNameSlice = append(yyVAL.labelNameSlice, clientmodel.LabelName(yyS[yypt-0].str))
+		}
 	case 32:
 		//line parser.y:178
-		{ yyVAL.ruleNodeSlice = []ast.Node{yyS[yypt-0].ruleNode} }
+		{
+			yyVAL.ruleNodeSlice = []ast.Node{yyS[yypt-0].ruleNode}
+		}
 	case 33:
 		//line parser.y:180
-		{ yyVAL.ruleNodeSlice = append(yyVAL.ruleNodeSlice, yyS[yypt-0].ruleNode) }
+		{
+			yyVAL.ruleNodeSlice = append(yyVAL.ruleNodeSlice, yyS[yypt-0].ruleNode)
+		}
 	case 34:
 		//line parser.y:184
-		{ yyVAL.ruleNode = yyS[yypt-0].ruleNode }
+		{
+			yyVAL.ruleNode = yyS[yypt-0].ruleNode
+		}
 	case 35:
 		//line parser.y:186
-		{ yyVAL.ruleNode = ast.NewStringLiteral(yyS[yypt-0].str) }
+		{
+			yyVAL.ruleNode = ast.NewStringLiteral(yyS[yypt-0].str)
+		}
 	}
 	goto yystack /* stack new state and value */
 }

rules/recording.go

@@ -18,7 +18,8 @@ import (
 	"html/template"
 	"time"
 
-	"github.com/prometheus/prometheus/model"
+	clientmodel "github.com/prometheus/client_golang/model"
+
 	"github.com/prometheus/prometheus/rules/ast"
 	"github.com/prometheus/prometheus/stats"
 	"github.com/prometheus/prometheus/storage/metric"
@@ -28,7 +29,7 @@ import (
 type RecordingRule struct {
 	name      string
 	vector    ast.VectorNode
-	labels    model.LabelSet
+	labels    clientmodel.LabelSet
 	permanent bool
 }
 
@@ -47,7 +48,7 @@ func (rule RecordingRule) Eval(timestamp time.Time, storage *metric.TieredStorag
 
 	// Override the metric name and labels.
 	for _, sample := range vector {
-		sample.Metric[model.MetricNameLabel] = model.LabelValue(rule.name)
+		sample.Metric[clientmodel.MetricNameLabel] = clientmodel.LabelValue(rule.name)
 		for label, value := range rule.labels {
 			if value == "" {
 				delete(sample.Metric, label)
@@ -85,7 +86,7 @@ func (rule RecordingRule) HTMLSnippet() template.HTML {
 }
 
 // Construct a new RecordingRule.
-func NewRecordingRule(name string, labels model.LabelSet, vector ast.VectorNode, permanent bool) *RecordingRule {
+func NewRecordingRule(name string, labels clientmodel.LabelSet, vector ast.VectorNode, permanent bool) *RecordingRule {
 	return &RecordingRule{
 		name:      name,
 		labels:    labels,

rules/rules_test.go

@@ -15,15 +15,17 @@ package rules
 
 import (
 	"fmt"
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/rules/ast"
-	"github.com/prometheus/prometheus/stats"
-	"github.com/prometheus/prometheus/storage/metric"
-	"github.com/prometheus/prometheus/utility/test"
 	"path"
 	"strings"
 	"testing"
 	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	"github.com/prometheus/prometheus/rules/ast"
+	"github.com/prometheus/prometheus/stats"
+	"github.com/prometheus/prometheus/storage/metric"
+	"github.com/prometheus/prometheus/utility/test"
 )
 
 var (
@@ -528,7 +530,7 @@ func TestAlertingRule(t *testing.T) {
 		t.Fatalf("Unable to parse alert expression: %s", err)
 	}
 	alertName := "HttpRequestRateLow"
-	alertLabels := model.LabelSet{
+	alertLabels := clientmodel.LabelSet{
 		"summary": "HTTP request rate is low",
 	}
 	rule := NewAlertingRule(alertName, alertExpr.(ast.VectorNode), time.Minute, alertLabels)

storage/metric/curator.go

@@ -14,16 +14,21 @@
 package metric
 
 import (
-	"code.google.com/p/goprotobuf/proto"
+	"bytes"
 	"fmt"
-	"github.com/prometheus/prometheus/coding"
-	"github.com/prometheus/prometheus/model"
+	"strings"
+	"time"
+
+	"code.google.com/p/goprotobuf/proto"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
 	dto "github.com/prometheus/prometheus/model/generated"
+
+	"github.com/prometheus/prometheus/coding"
 	"github.com/prometheus/prometheus/storage"
 	"github.com/prometheus/prometheus/storage/raw"
 	"github.com/prometheus/prometheus/storage/raw/leveldb"
-	"strings"
-	"time"
 )
 
 // CurationState contains high-level curation state information for the
@@ -32,28 +37,7 @@ type CurationState struct {
 	Active      bool
 	Name        string
 	Limit       time.Duration
-	Fingerprint *model.Fingerprint
-}
-
-// watermarkFilter determines whether to include or exclude candidate
-// values from the curation process by virtue of how old the high watermark is.
-type watermarkFilter struct {
-	// curationState is the data store for curation remarks.
-	curationState raw.Persistence
-	// ignoreYoungerThan conveys this filter's policy of not working on elements
-	// younger than a given relative time duration.  This is persisted to the
-	// curation remark database (curationState) to indicate how far a given
-	// policy of this type has progressed.
-	ignoreYoungerThan time.Duration
-	// processor is the post-processor that performs whatever action is desired on
-	// the data that is deemed valid to be worked on.
-	processor Processor
-	// stop functions as the global stop channel for all future operations.
-	stop chan bool
-	// stopAt is used to determine the elegibility of series for compaction.
-	stopAt time.Time
-	// status is the outbound channel for notifying the status page of its state.
-	status chan CurationState
+	Fingerprint *clientmodel.Fingerprint
 }
 
 // curator is responsible for effectuating a given curation policy across the
@@ -66,17 +50,19 @@ type Curator struct {
 	Stop chan bool
 }
 
-// watermarkDecoder converts (dto.Fingerprint, dto.MetricHighWatermark) doubles
+// watermarkScanner converts (dto.Fingerprint, dto.MetricHighWatermark) doubles
 // into (model.Fingerprint, model.Watermark) doubles.
-type watermarkDecoder struct{}
-
-// watermarkOperator scans over the curator.samples table for metrics whose
+//
+// watermarkScanner determines whether to include or exclude candidate
+// values from the curation process by virtue of how old the high watermark is.
+//
+// watermarkScanner scans over the curator.samples table for metrics whose
 // high watermark has been determined to be allowable for curation.  This type
 // is individually responsible for compaction.
 //
 // The scanning starts from CurationRemark.LastCompletionTimestamp and goes
 // forward until the stop point or end of the series is reached.
-type watermarkOperator struct {
+type watermarkScanner struct {
 	// curationState is the data store for curation remarks.
 	curationState raw.Persistence
 	// diskFrontier models the available seekable ranges for the provided
@@ -93,6 +79,11 @@ type watermarkOperator struct {
 	samples raw.Persistence
 	// stopAt is a cue for when to stop mutating a given series.
 	stopAt time.Time
+
+	// stop functions as the global stop channel for all future operations.
+	stop chan bool
+	// status is the outbound channel for notifying the status page of its state.
+	status chan CurationState
 }
 
 // run facilitates the curation lifecycle.
@@ -101,7 +92,7 @@ type watermarkOperator struct {
 // curated.
 // curationState is the on-disk store where the curation remarks are made for
 // how much progress has been made.
-func (c Curator) Run(ignoreYoungerThan time.Duration, instant time.Time, processor Processor, curationState, samples, watermarks *leveldb.LevelDBPersistence, status chan CurationState) (err error) {
+func (c *Curator) Run(ignoreYoungerThan time.Duration, instant time.Time, processor Processor, curationState, samples, watermarks *leveldb.LevelDBPersistence, status chan CurationState) (err error) {
 	defer func(t time.Time) {
 		duration := float64(time.Since(t) / time.Millisecond)
 
@@ -137,104 +128,89 @@ func (c Curator) Run(ignoreYoungerThan time.Duration, instant time.Time, process
 		return
 	}
 
-	decoder := watermarkDecoder{}
-
-	filter := watermarkFilter{
+	scanner := &watermarkScanner{
 		curationState:     curationState,
 		ignoreYoungerThan: ignoreYoungerThan,
 		processor:         processor,
 		status:            status,
 		stop:              c.Stop,
 		stopAt:            instant.Add(-1 * ignoreYoungerThan),
+
+		diskFrontier:   diskFrontier,
+		sampleIterator: iterator,
+		samples:        samples,
 	}
 
 	// Right now, the ability to stop a curation is limited to the beginning of
 	// each fingerprint cycle.  It is impractical to cease the work once it has
 	// begun for a given series.
-	operator := watermarkOperator{
-		curationState:     curationState,
-		diskFrontier:      diskFrontier,
-		processor:         processor,
-		ignoreYoungerThan: ignoreYoungerThan,
-		sampleIterator:    iterator,
-		samples:           samples,
-		stopAt:            instant.Add(-1 * ignoreYoungerThan),
-	}
-
-	_, err = watermarks.ForEach(decoder, filter, operator)
+	_, err = watermarks.ForEach(scanner, scanner, scanner)
 
 	return
 }
 
 // drain instructs the curator to stop at the next convenient moment as to not
 // introduce data inconsistencies.
-func (c Curator) Drain() {
+func (c *Curator) Drain() {
 	if len(c.Stop) == 0 {
 		c.Stop <- true
 	}
 }
 
-func (w watermarkDecoder) DecodeKey(in interface{}) (out interface{}, err error) {
-	key := &dto.Fingerprint{}
+func (w *watermarkScanner) DecodeKey(in interface{}) (interface{}, error) {
+	key := new(dto.Fingerprint)
 	bytes := in.([]byte)
 
-	err = proto.Unmarshal(bytes, key)
-	if err != nil {
-		return
+	if err := proto.Unmarshal(bytes, key); err != nil {
+		return nil, err
 	}
 
-	out = model.NewFingerprintFromDTO(key)
+	fingerprint := new(clientmodel.Fingerprint)
+	loadFingerprint(fingerprint, key)
 
-	return
+	return fingerprint, nil
 }
 
-func (w watermarkDecoder) DecodeValue(in interface{}) (out interface{}, err error) {
-	dto := &dto.MetricHighWatermark{}
+func (w *watermarkScanner) DecodeValue(in interface{}) (interface{}, error) {
+	value := new(dto.MetricHighWatermark)
 	bytes := in.([]byte)
 
-	err = proto.Unmarshal(bytes, dto)
-	if err != nil {
-		return
+	if err := proto.Unmarshal(bytes, value); err != nil {
+		return nil, err
 	}
 
-	out = model.NewWatermarkFromHighWatermarkDTO(dto)
+	watermark := new(watermarks)
+	watermark.load(value)
 
-	return
+	return watermark, nil
 }
 
-func (w watermarkFilter) shouldStop() bool {
+func (w *watermarkScanner) shouldStop() bool {
 	return len(w.stop) != 0
 }
 
-func getCurationRemark(states raw.Persistence, processor Processor, ignoreYoungerThan time.Duration, fingerprint *model.Fingerprint) (*model.CurationRemark, error) {
-	rawSignature, err := processor.Signature()
-	if err != nil {
-		return nil, err
-	}
+func (w *watermarkScanner) getCurationRemark(k *curationKey) (r *curationRemark, found bool, err error) {
+	curationKey := new(dto.CurationKey)
+	curationValue := new(dto.CurationValue)
 
-	curationKey := model.CurationKey{
-		Fingerprint:              fingerprint,
-		ProcessorMessageRaw:      rawSignature,
-		ProcessorMessageTypeName: processor.Name(),
-		IgnoreYoungerThan:        ignoreYoungerThan,
-	}.ToDTO()
-	curationValue := &dto.CurationValue{}
+	k.dump(curationKey)
 
-	present, err := states.Get(curationKey, curationValue)
+	present, err := w.curationState.Get(curationKey, curationValue)
 	if err != nil {
-		return nil, err
+		return nil, false, err
 	}
 	if !present {
-		return nil, nil
+		return nil, false, nil
 	}
 
-	remark := model.NewCurationRemarkFromDTO(curationValue)
+	remark := new(curationRemark)
+	remark.load(curationValue)
 
-	return &remark, nil
+	return remark, true, nil
 }
 
-func (w watermarkFilter) Filter(key, value interface{}) (r storage.FilterResult) {
-	fingerprint := key.(*model.Fingerprint)
+func (w *watermarkScanner) Filter(key, value interface{}) (r storage.FilterResult) {
+	fingerprint := key.(*clientmodel.Fingerprint)
 
 	defer func() {
 		labels := map[string]string{
@@ -244,9 +220,7 @@ func (w watermarkFilter) Filter(key, value interface{}) (r storage.FilterResult)
 		}
 
 		curationFilterOperations.Increment(labels)
-	}()
 
-	defer func() {
 		select {
 		case w.status <- CurationState{
 			Active:      true,
@@ -263,19 +237,25 @@ func (w watermarkFilter) Filter(key, value interface{}) (r storage.FilterResult)
 		return storage.STOP
 	}
 
-	curationRemark, err := getCurationRemark(w.curationState, w.processor, w.ignoreYoungerThan, fingerprint)
+	k := &curationKey{
+		Fingerprint:              fingerprint,
+		ProcessorMessageRaw:      w.processor.Signature(),
+		ProcessorMessageTypeName: w.processor.Name(),
+		IgnoreYoungerThan:        w.ignoreYoungerThan,
+	}
+
+	curationRemark, present, err := w.getCurationRemark(k)
 	if err != nil {
 		return
 	}
-	if curationRemark == nil {
-		r = storage.ACCEPT
-		return
+	if !present {
+		return storage.ACCEPT
 	}
 	if !curationRemark.OlderThan(w.stopAt) {
 		return storage.SKIP
 	}
-	watermark := value.(model.Watermark)
-	if !curationRemark.OlderThan(watermark.Time) {
+	watermark := value.(*watermarks)
+	if !curationRemark.OlderThan(watermark.High) {
 		return storage.SKIP
 	}
 	curationConsistent, err := w.curationConsistent(fingerprint, watermark)
@@ -291,20 +271,29 @@ func (w watermarkFilter) Filter(key, value interface{}) (r storage.FilterResult)
 
 // curationConsistent determines whether the given metric is in a dirty state
 // and needs curation.
-func (w watermarkFilter) curationConsistent(f *model.Fingerprint, watermark model.Watermark) (consistent bool, err error) {
-	curationRemark, err := getCurationRemark(w.curationState, w.processor, w.ignoreYoungerThan, f)
-	if err != nil {
-		return
+func (w *watermarkScanner) curationConsistent(f *clientmodel.Fingerprint, watermark *watermarks) (bool, error) {
+	k := &curationKey{
+		Fingerprint:              f,
+		ProcessorMessageRaw:      w.processor.Signature(),
+		ProcessorMessageTypeName: w.processor.Name(),
+		IgnoreYoungerThan:        w.ignoreYoungerThan,
 	}
-	if !curationRemark.OlderThan(watermark.Time) {
-		consistent = true
+	curationRemark, present, err := w.getCurationRemark(k)
+	if err != nil {
+		return false, err
+	}
+	if !present {
+		return false, nil
+	}
+	if !curationRemark.OlderThan(watermark.High) {
+		return true, nil
 	}
 
-	return
+	return false, nil
 }
 
-func (w watermarkOperator) Operate(key, _ interface{}) (oErr *storage.OperatorError) {
-	fingerprint := key.(*model.Fingerprint)
+func (w *watermarkScanner) Operate(key, _ interface{}) (oErr *storage.OperatorError) {
+	fingerprint := key.(*clientmodel.Fingerprint)
 
 	seriesFrontier, present, err := newSeriesFrontier(fingerprint, w.diskFrontier, w.sampleIterator)
 	if err != nil || !present {
@@ -314,7 +303,14 @@ func (w watermarkOperator) Operate(key, _ interface{}) (oErr *storage.OperatorEr
 		return &storage.OperatorError{error: err, Continuable: false}
 	}
 
-	curationState, err := getCurationRemark(w.curationState, w.processor, w.ignoreYoungerThan, fingerprint)
+	k := &curationKey{
+		Fingerprint:              fingerprint,
+		ProcessorMessageRaw:      w.processor.Signature(),
+		ProcessorMessageTypeName: w.processor.Name(),
+		IgnoreYoungerThan:        w.ignoreYoungerThan,
+	}
+
+	curationState, _, err := w.getCurationRemark(k)
 	if err != nil {
 		// An anomaly with the curation remark is likely not fatal in the sense that
 		// there was a decoding error with the entity and shouldn't be cause to stop
@@ -323,12 +319,14 @@ func (w watermarkOperator) Operate(key, _ interface{}) (oErr *storage.OperatorEr
 		return &storage.OperatorError{error: err, Continuable: true}
 	}
 
-	startKey := model.SampleKey{
+	startKey := &SampleKey{
 		Fingerprint:    fingerprint,
 		FirstTimestamp: seriesFrontier.optimalStartTime(curationState),
 	}
+	dto := new(dto.SampleKey)
 
-	prospectiveKey := coding.NewPBEncoder(startKey.ToDTO()).MustEncode()
+	startKey.Dump(dto)
+	prospectiveKey := coding.NewPBEncoder(dto).MustEncode()
 	if !w.sampleIterator.Seek(prospectiveKey) {
 		// LevelDB is picky about the seek ranges.  If an iterator was invalidated,
 		// no work may occur, and the iterator cannot be recovered.
@@ -358,22 +356,101 @@ func (w watermarkOperator) Operate(key, _ interface{}) (oErr *storage.OperatorEr
 	return
 }
 
-func (w watermarkOperator) refreshCurationRemark(f *model.Fingerprint, finished time.Time) (err error) {
-	signature, err := w.processor.Signature()
-	if err != nil {
-		return
-	}
-	curationKey := model.CurationKey{
+func (w *watermarkScanner) refreshCurationRemark(f *clientmodel.Fingerprint, finished time.Time) error {
+	curationKey := curationKey{
 		Fingerprint:              f,
-		ProcessorMessageRaw:      signature,
+		ProcessorMessageRaw:      w.processor.Signature(),
 		ProcessorMessageTypeName: w.processor.Name(),
 		IgnoreYoungerThan:        w.ignoreYoungerThan,
-	}.ToDTO()
-	curationValue := model.CurationRemark{
+	}
+	k := new(dto.CurationKey)
+	curationKey.dump(k)
+	curationValue := curationRemark{
 		LastCompletionTimestamp: finished,
-	}.ToDTO()
+	}
+	v := new(dto.CurationValue)
+	curationValue.dump(v)
 
-	err = w.curationState.Put(curationKey, curationValue)
-
-	return
+	return w.curationState.Put(k, v)
+}
+
+// curationRemark provides a representation of dto.CurationValue with associated
+// business logic methods attached to it to enhance code readability.
+type curationRemark struct {
+	LastCompletionTimestamp time.Time
+}
+
+// OlderThan answers whether this curationRemark is older than the provided
+// cutOff time.
+func (c *curationRemark) OlderThan(t time.Time) bool {
+	return c.LastCompletionTimestamp.Before(t)
+}
+
+// Equal answers whether the two curationRemarks are equivalent.
+func (c *curationRemark) Equal(o curationRemark) bool {
+	return c.LastCompletionTimestamp.Equal(o.LastCompletionTimestamp)
+}
+
+func (c *curationRemark) String() string {
+	return fmt.Sprintf("Last curated at %s", c.LastCompletionTimestamp)
+}
+
+func (c *curationRemark) load(d *dto.CurationValue) {
+	c.LastCompletionTimestamp = time.Unix(d.GetLastCompletionTimestamp(), 0).UTC()
+}
+
+func (c *curationRemark) dump(d *dto.CurationValue) {
+	d.Reset()
+
+	d.LastCompletionTimestamp = proto.Int64(c.LastCompletionTimestamp.Unix())
+}
+
+// curationKey provides a representation of dto.CurationKey with associated
+// business logic methods attached to it to enhance code readability.
+type curationKey struct {
+	Fingerprint              *clientmodel.Fingerprint
+	ProcessorMessageRaw      []byte
+	ProcessorMessageTypeName string
+	IgnoreYoungerThan        time.Duration
+}
+
+// Equal answers whether the two curationKeys are equivalent.
+func (c *curationKey) Equal(o *curationKey) bool {
+	switch {
+	case !c.Fingerprint.Equal(o.Fingerprint):
+		return false
+	case bytes.Compare(c.ProcessorMessageRaw, o.ProcessorMessageRaw) != 0:
+		return false
+	case c.ProcessorMessageTypeName != o.ProcessorMessageTypeName:
+		return false
+	case c.IgnoreYoungerThan != o.IgnoreYoungerThan:
+		return false
+	}
+
+	return true
+}
+
+func (c *curationKey) dump(d *dto.CurationKey) {
+	d.Reset()
+
+	// BUG(matt): Avenue for simplification.
+	fingerprintDTO := &dto.Fingerprint{}
+
+	dumpFingerprint(fingerprintDTO, c.Fingerprint)
+
+	d.Fingerprint = fingerprintDTO
+	d.ProcessorMessageRaw = c.ProcessorMessageRaw
+	d.ProcessorMessageTypeName = proto.String(c.ProcessorMessageTypeName)
+	d.IgnoreYoungerThan = proto.Int64(int64(c.IgnoreYoungerThan))
+}
+
+func (c *curationKey) load(d *dto.CurationKey) {
+	// BUG(matt): Avenue for simplification.
+	c.Fingerprint = &clientmodel.Fingerprint{}
+
+	loadFingerprint(c.Fingerprint, d.Fingerprint)
+
+	c.ProcessorMessageRaw = d.ProcessorMessageRaw
+	c.ProcessorMessageTypeName = d.GetProcessorMessageTypeName()
+	c.IgnoreYoungerThan = time.Duration(d.GetIgnoreYoungerThan())
 }

storage/metric/dto.go

@@ -0,0 +1,68 @@
+// Copyright 2013 Prometheus Team
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package metric
+
+import (
+	"sort"
+
+	"code.google.com/p/goprotobuf/proto"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	dto "github.com/prometheus/prometheus/model/generated"
+)
+
+func dumpFingerprint(d *dto.Fingerprint, f *clientmodel.Fingerprint) {
+	d.Reset()
+
+	d.Signature = proto.String(f.String())
+}
+
+func loadFingerprint(f *clientmodel.Fingerprint, d *dto.Fingerprint) {
+	f.LoadFromString(d.GetSignature())
+}
+
+func dumpMetric(d *dto.Metric, m clientmodel.Metric) {
+	d.Reset()
+
+	metricLength := len(m)
+	labelNames := make([]string, 0, metricLength)
+
+	for labelName := range m {
+		labelNames = append(labelNames, string(labelName))
+	}
+
+	sort.Strings(labelNames)
+
+	pairs := make([]*dto.LabelPair, 0, metricLength)
+
+	for _, labelName := range labelNames {
+		l := clientmodel.LabelName(labelName)
+		labelValue := m[l]
+		labelPair := &dto.LabelPair{
+			Name:  proto.String(string(labelName)),
+			Value: proto.String(string(labelValue)),
+		}
+
+		pairs = append(pairs, labelPair)
+	}
+
+	d.LabelPair = pairs
+}
+
+func dumpLabelName(d *dto.LabelName, l clientmodel.LabelName) {
+	d.Reset()
+
+	d.Name = proto.String(string(l))
+}

storage/metric/end_to_end_test.go

@@ -14,33 +14,35 @@
 package metric
 
 import (
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/utility/test"
 	"testing"
 	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	"github.com/prometheus/prometheus/utility/test"
 )
 
 func GetFingerprintsForLabelSetTests(p MetricPersistence, t test.Tester) {
-	testAppendSample(p, model.Sample{
+	testAppendSample(p, &clientmodel.Sample{
 		Value:     0,
 		Timestamp: time.Time{},
-		Metric: model.Metric{
-			model.MetricNameLabel: "my_metric",
-			"request_type":        "your_mom",
+		Metric: clientmodel.Metric{
+			clientmodel.MetricNameLabel: "my_metric",
+			"request_type":              "your_mom",
 		},
 	}, t)
 
-	testAppendSample(p, model.Sample{
+	testAppendSample(p, &clientmodel.Sample{
 		Value:     0,
 		Timestamp: time.Time{},
-		Metric: model.Metric{
-			model.MetricNameLabel: "my_metric",
-			"request_type":        "your_dad",
+		Metric: clientmodel.Metric{
+			clientmodel.MetricNameLabel: "my_metric",
+			"request_type":              "your_dad",
 		},
 	}, t)
 
-	result, err := p.GetFingerprintsForLabelSet(model.LabelSet{
-		model.MetricNameLabel: model.LabelValue("my_metric"),
+	result, err := p.GetFingerprintsForLabelSet(clientmodel.LabelSet{
+		clientmodel.MetricNameLabel: clientmodel.LabelValue("my_metric"),
 	})
 
 	if err != nil {
@@ -51,8 +53,8 @@ func GetFingerprintsForLabelSetTests(p MetricPersistence, t test.Tester) {
 		t.Errorf("Expected two elements.")
 	}
 
-	result, err = p.GetFingerprintsForLabelSet(model.LabelSet{
-		model.LabelName("request_type"): model.LabelValue("your_mom"),
+	result, err = p.GetFingerprintsForLabelSet(clientmodel.LabelSet{
+		clientmodel.LabelName("request_type"): clientmodel.LabelValue("your_mom"),
 	})
 
 	if err != nil {
@@ -63,8 +65,8 @@ func GetFingerprintsForLabelSetTests(p MetricPersistence, t test.Tester) {
 		t.Errorf("Expected one element.")
 	}
 
-	result, err = p.GetFingerprintsForLabelSet(model.LabelSet{
-		model.LabelName("request_type"): model.LabelValue("your_dad"),
+	result, err = p.GetFingerprintsForLabelSet(clientmodel.LabelSet{
+		clientmodel.LabelName("request_type"): clientmodel.LabelValue("your_dad"),
 	})
 
 	if err != nil {
@@ -77,27 +79,27 @@ func GetFingerprintsForLabelSetTests(p MetricPersistence, t test.Tester) {
 }
 
 func GetFingerprintsForLabelNameTests(p MetricPersistence, t test.Tester) {
-	testAppendSample(p, model.Sample{
+	testAppendSample(p, &clientmodel.Sample{
 		Value:     0,
 		Timestamp: time.Time{},
-		Metric: model.Metric{
-			model.MetricNameLabel: "my_metric",
-			"request_type":        "your_mom",
-			"language":            "english",
+		Metric: clientmodel.Metric{
+			clientmodel.MetricNameLabel: "my_metric",
+			"request_type":              "your_mom",
+			"language":                  "english",
 		},
 	}, t)
 
-	testAppendSample(p, model.Sample{
+	testAppendSample(p, &clientmodel.Sample{
 		Value:     0,
 		Timestamp: time.Time{},
-		Metric: model.Metric{
-			model.MetricNameLabel: "my_metric",
-			"request_type":        "your_dad",
-			"sprache":             "deutsch",
+		Metric: clientmodel.Metric{
+			clientmodel.MetricNameLabel: "my_metric",
+			"request_type":              "your_dad",
+			"sprache":                   "deutsch",
 		},
 	}, t)
 
-	b := model.MetricNameLabel
+	b := clientmodel.MetricNameLabel
 	result, err := p.GetFingerprintsForLabelName(b)
 
 	if err != nil {
@@ -108,7 +110,7 @@ func GetFingerprintsForLabelNameTests(p MetricPersistence, t test.Tester) {
 		t.Errorf("Expected two elements.")
 	}
 
-	b = model.LabelName("request_type")
+	b = clientmodel.LabelName("request_type")
 	result, err = p.GetFingerprintsForLabelName(b)
 
 	if err != nil {
@@ -119,7 +121,7 @@ func GetFingerprintsForLabelNameTests(p MetricPersistence, t test.Tester) {
 		t.Errorf("Expected two elements.")
 	}
 
-	b = model.LabelName("language")
+	b = clientmodel.LabelName("language")
 	result, err = p.GetFingerprintsForLabelName(b)
 
 	if err != nil {
@@ -130,7 +132,7 @@ func GetFingerprintsForLabelNameTests(p MetricPersistence, t test.Tester) {
 		t.Errorf("Expected one element.")
 	}
 
-	b = model.LabelName("sprache")
+	b = clientmodel.LabelName("sprache")
 	result, err = p.GetFingerprintsForLabelName(b)
 
 	if err != nil {
@@ -143,25 +145,25 @@ func GetFingerprintsForLabelNameTests(p MetricPersistence, t test.Tester) {
 }
 
 func GetMetricForFingerprintTests(p MetricPersistence, t test.Tester) {
-	testAppendSample(p, model.Sample{
+	testAppendSample(p, &clientmodel.Sample{
 		Value:     0,
 		Timestamp: time.Time{},
-		Metric: model.Metric{
+		Metric: clientmodel.Metric{
 			"request_type": "your_mom",
 		},
 	}, t)
 
-	testAppendSample(p, model.Sample{
+	testAppendSample(p, &clientmodel.Sample{
 		Value:     0,
 		Timestamp: time.Time{},
-		Metric: model.Metric{
+		Metric: clientmodel.Metric{
 			"request_type": "your_dad",
 			"one-off":      "value",
 		},
 	}, t)
 
-	result, err := p.GetFingerprintsForLabelSet(model.LabelSet{
-		model.LabelName("request_type"): model.LabelValue("your_mom"),
+	result, err := p.GetFingerprintsForLabelSet(clientmodel.LabelSet{
+		clientmodel.LabelName("request_type"): clientmodel.LabelValue("your_mom"),
 	})
 
 	if err != nil {
@@ -189,8 +191,8 @@ func GetMetricForFingerprintTests(p MetricPersistence, t test.Tester) {
 		t.Errorf("Expected metric to match.")
 	}
 
-	result, err = p.GetFingerprintsForLabelSet(model.LabelSet{
-		model.LabelName("request_type"): model.LabelValue("your_dad"),
+	result, err = p.GetFingerprintsForLabelSet(clientmodel.LabelSet{
+		clientmodel.LabelName("request_type"): clientmodel.LabelValue("your_dad"),
 	})
 
 	if err != nil {
@@ -250,10 +252,10 @@ func GetMetricForFingerprintTests(p MetricPersistence, t test.Tester) {
 }
 
 func AppendRepeatingValuesTests(p MetricPersistence, t test.Tester) {
-	metric := model.Metric{
-		model.MetricNameLabel: "errors_total",
-		"controller":          "foo",
-		"operation":           "bar",
+	metric := clientmodel.Metric{
+		clientmodel.MetricNameLabel: "errors_total",
+		"controller":                "foo",
+		"operation":                 "bar",
 	}
 
 	increments := 10
@@ -262,8 +264,8 @@ func AppendRepeatingValuesTests(p MetricPersistence, t test.Tester) {
 	for i := 0; i < increments; i++ {
 		for j := 0; j < repetitions; j++ {
 			time := time.Time{}.Add(time.Duration(i) * time.Hour).Add(time.Duration(j) * time.Second)
-			testAppendSample(p, model.Sample{
-				Value:     model.SampleValue(i),
+			testAppendSample(p, &clientmodel.Sample{
+				Value:     clientmodel.SampleValue(i),
 				Timestamp: time,
 				Metric:    metric,
 			}, t)
@@ -275,10 +277,10 @@ func AppendRepeatingValuesTests(p MetricPersistence, t test.Tester) {
 		return
 	}
 
-	labelSet := model.LabelSet{
-		model.MetricNameLabel: "errors_total",
-		"controller":          "foo",
-		"operation":           "bar",
+	labelSet := clientmodel.LabelSet{
+		clientmodel.MetricNameLabel: "errors_total",
+		"controller":                "foo",
+		"operation":                 "bar",
 	}
 
 	for i := 0; i < increments; i++ {
@@ -297,7 +299,7 @@ func AppendRepeatingValuesTests(p MetricPersistence, t test.Tester) {
 				t.Fatal("expected at least one sample.")
 			}
 
-			expected := model.SampleValue(i)
+			expected := clientmodel.SampleValue(i)
 
 			for _, sample := range samples {
 				if sample.Value != expected {
@@ -309,21 +311,21 @@ func AppendRepeatingValuesTests(p MetricPersistence, t test.Tester) {
 }
 
 func AppendsRepeatingValuesTests(p MetricPersistence, t test.Tester) {
-	metric := model.Metric{
-		model.MetricNameLabel: "errors_total",
-		"controller":          "foo",
-		"operation":           "bar",
+	metric := clientmodel.Metric{
+		clientmodel.MetricNameLabel: "errors_total",
+		"controller":                "foo",
+		"operation":                 "bar",
 	}
 
 	increments := 10
 	repetitions := 500
 
-	s := model.Samples{}
+	s := clientmodel.Samples{}
 	for i := 0; i < increments; i++ {
 		for j := 0; j < repetitions; j++ {
 			time := time.Time{}.Add(time.Duration(i) * time.Hour).Add(time.Duration(j) * time.Second)
-			s = append(s, model.Sample{
-				Value:     model.SampleValue(i),
+			s = append(s, &clientmodel.Sample{
+				Value:     clientmodel.SampleValue(i),
 				Timestamp: time,
 				Metric:    metric,
 			})
@@ -337,10 +339,10 @@ func AppendsRepeatingValuesTests(p MetricPersistence, t test.Tester) {
 		return
 	}
 
-	labelSet := model.LabelSet{
-		model.MetricNameLabel: "errors_total",
-		"controller":          "foo",
-		"operation":           "bar",
+	labelSet := clientmodel.LabelSet{
+		clientmodel.MetricNameLabel: "errors_total",
+		"controller":                "foo",
+		"operation":                 "bar",
 	}
 
 	for i := 0; i < increments; i++ {
@@ -359,7 +361,7 @@ func AppendsRepeatingValuesTests(p MetricPersistence, t test.Tester) {
 				t.Fatal("expected at least one sample.")
 			}
 
-			expected := model.SampleValue(i)
+			expected := clientmodel.SampleValue(i)
 
 			for _, sample := range samples {
 				if sample.Value != expected {

storage/metric/frontier.go

@@ -15,12 +15,15 @@ package metric
 
 import (
 	"fmt"
+	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	dto "github.com/prometheus/prometheus/model/generated"
+
 	"github.com/prometheus/prometheus/coding"
 	"github.com/prometheus/prometheus/coding/indexable"
-	"github.com/prometheus/prometheus/model"
-	dto "github.com/prometheus/prometheus/model/generated"
 	"github.com/prometheus/prometheus/storage/raw/leveldb"
-	"time"
 )
 
 // diskFrontier describes an on-disk store of series to provide a
@@ -29,17 +32,17 @@ import (
 // This is used to reduce the burden associated with LevelDB iterator
 // management.
 type diskFrontier struct {
-	firstFingerprint *model.Fingerprint
+	firstFingerprint *clientmodel.Fingerprint
 	firstSupertime   time.Time
-	lastFingerprint  *model.Fingerprint
+	lastFingerprint  *clientmodel.Fingerprint
 	lastSupertime    time.Time
 }
 
 func (f diskFrontier) String() string {
-	return fmt.Sprintf("diskFrontier from %s at %s to %s at %s", f.firstFingerprint.ToRowKey(), f.firstSupertime, f.lastFingerprint.ToRowKey(), f.lastSupertime)
+	return fmt.Sprintf("diskFrontier from %s at %s to %s at %s", f.firstFingerprint, f.firstSupertime, f.lastFingerprint, f.lastSupertime)
 }
 
-func (f diskFrontier) ContainsFingerprint(fingerprint *model.Fingerprint) bool {
+func (f *diskFrontier) ContainsFingerprint(fingerprint *clientmodel.Fingerprint) bool {
 	return !(fingerprint.Less(f.firstFingerprint) || f.lastFingerprint.Less(fingerprint))
 }
 
@@ -60,14 +63,12 @@ func newDiskFrontier(i leveldb.Iterator) (d *diskFrontier, present bool, err err
 		return nil, false, err
 	}
 
-	d = &diskFrontier{}
-
-	d.firstFingerprint = firstKey.Fingerprint
-	d.firstSupertime = firstKey.FirstTimestamp
-	d.lastFingerprint = lastKey.Fingerprint
-	d.lastSupertime = lastKey.FirstTimestamp
-
-	return d, true, nil
+	return &diskFrontier{
+		firstFingerprint: firstKey.Fingerprint,
+		firstSupertime:   firstKey.FirstTimestamp,
+		lastFingerprint:  lastKey.Fingerprint,
+		lastSupertime:    lastKey.FirstTimestamp,
+	}, true, nil
 }
 
 // seriesFrontier represents the valid seek frontier for a given series.
@@ -77,13 +78,13 @@ type seriesFrontier struct {
 	lastTime       time.Time
 }
 
-func (f seriesFrontier) String() string {
+func (f *seriesFrontier) String() string {
 	return fmt.Sprintf("seriesFrontier from %s to %s at %s", f.firstSupertime, f.lastSupertime, f.lastTime)
 }
 
 // newSeriesFrontier furnishes a populated diskFrontier for a given
 // fingerprint.  If the series is absent, present will be false.
-func newSeriesFrontier(f *model.Fingerprint, d *diskFrontier, i leveldb.Iterator) (s *seriesFrontier, present bool, err error) {
+func newSeriesFrontier(f *clientmodel.Fingerprint, d *diskFrontier, i leveldb.Iterator) (s *seriesFrontier, present bool, err error) {
 	lowerSeek := firstSupertime
 	upperSeek := lastSupertime
 
@@ -104,8 +105,10 @@ func newSeriesFrontier(f *model.Fingerprint, d *diskFrontier, i leveldb.Iterator
 	}
 
 	// TODO: Convert this to SampleKey.ToPartialDTO.
+	fp := new(dto.Fingerprint)
+	dumpFingerprint(fp, f)
 	key := &dto.SampleKey{
-		Fingerprint: f.ToDTO(),
+		Fingerprint: fp,
 		Timestamp:   upperSeek,
 	}
 
@@ -169,14 +172,14 @@ func newSeriesFrontier(f *model.Fingerprint, d *diskFrontier, i leveldb.Iterator
 
 // Contains indicates whether a given time value is within the recorded
 // interval.
-func (s seriesFrontier) Contains(t time.Time) bool {
+func (s *seriesFrontier) Contains(t time.Time) bool {
 	return !(t.Before(s.firstSupertime) || t.After(s.lastTime))
 }
 
 // InSafeSeekRange indicates whether the time is within the recorded time range
 // and is safely seekable such that a seek does not result in an iterator point
 // after the last value of the series or outside of the entire store.
-func (s seriesFrontier) InSafeSeekRange(t time.Time) (safe bool) {
+func (s *seriesFrontier) InSafeSeekRange(t time.Time) (safe bool) {
 	if !s.Contains(t) {
 		return
 	}
@@ -188,13 +191,13 @@ func (s seriesFrontier) InSafeSeekRange(t time.Time) (safe bool) {
 	return true
 }
 
-func (s seriesFrontier) After(t time.Time) bool {
+func (s *seriesFrontier) After(t time.Time) bool {
 	return s.firstSupertime.After(t)
 }
 
 // optimalStartTime indicates what the best start time for a curation operation
 // should be given the curation remark.
-func (s seriesFrontier) optimalStartTime(remark *model.CurationRemark) (t time.Time) {
+func (s *seriesFrontier) optimalStartTime(remark *curationRemark) (t time.Time) {
 	switch {
 	case remark == nil:
 		t = s.firstSupertime

storage/metric/helpers_test.go

@@ -15,9 +15,11 @@ package metric
 
 import (
 	"fmt"
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/utility/test"
 	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	"github.com/prometheus/prometheus/utility/test"
 )
 
 var (
@@ -26,7 +28,7 @@ var (
 	testInstant  = time.Date(1972, 7, 18, 19, 5, 45, 0, usEastern).In(time.UTC)
 )
 
-func testAppendSample(p MetricPersistence, s model.Sample, t test.Tester) {
+func testAppendSample(p MetricPersistence, s *clientmodel.Sample, t test.Tester) {
 	err := p.AppendSample(s)
 	if err != nil {
 		t.Fatal(err)
@@ -48,10 +50,12 @@ func buildLevelDBTestPersistencesMaker(name string, t test.Tester) func() (Metri
 
 func buildLevelDBTestPersistence(name string, f func(p MetricPersistence, t test.Tester)) func(t test.Tester) {
 	return func(t test.Tester) {
+
 		temporaryDirectory := test.NewTemporaryDirectory(fmt.Sprintf("test_leveldb_%s", name), t)
 		defer temporaryDirectory.Close()
 
 		p, err := NewLevelDBMetricPersistence(temporaryDirectory.Path())
+
 		if err != nil {
 			t.Errorf("Could not create LevelDB Metric Persistence: %q\n", err)
 		}
@@ -78,12 +82,12 @@ type testTieredStorageCloser struct {
 	directory test.Closer
 }
 
-func (t testTieredStorageCloser) Close() {
+func (t *testTieredStorageCloser) Close() {
 	t.storage.Close()
 	t.directory.Close()
 }
 
-func NewTestTieredStorage(t test.Tester) (storage *TieredStorage, closer test.Closer) {
+func NewTestTieredStorage(t test.Tester) (*TieredStorage, test.Closer) {
 	var directory test.TemporaryDirectory
 	directory = test.NewTemporaryDirectory("test_tiered_storage", t)
 	storage, err := NewTieredStorage(2500, 1000, 5*time.Second, 0, directory.Path())
@@ -105,9 +109,10 @@ func NewTestTieredStorage(t test.Tester) (storage *TieredStorage, closer test.Cl
 	go storage.Serve(started)
 	<-started
 
-	closer = &testTieredStorageCloser{
+	closer := &testTieredStorageCloser{
 		storage:   storage,
 		directory: directory,
 	}
-	return
+
+	return storage, closer
 }

storage/metric/interface.go

@@ -14,9 +14,11 @@
 package metric
 
 import (
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/storage"
 	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	"github.com/prometheus/prometheus/storage"
 )
 
 // MetricPersistence is a system for storing metric samples in a persistence
@@ -31,31 +33,31 @@ type MetricPersistence interface {
 	// Flush() error
 
 	// Record a new sample in the storage layer.
-	AppendSample(model.Sample) error
+	AppendSample(*clientmodel.Sample) error
 
 	// Record a group of new samples in the storage layer.
-	AppendSamples(model.Samples) error
+	AppendSamples(clientmodel.Samples) error
 
 	// Get all of the metric fingerprints that are associated with the provided
 	// label set.
-	GetFingerprintsForLabelSet(model.LabelSet) (model.Fingerprints, error)
+	GetFingerprintsForLabelSet(clientmodel.LabelSet) (clientmodel.Fingerprints, error)
 
 	// Get all of the metric fingerprints that are associated for a given label
 	// name.
-	GetFingerprintsForLabelName(model.LabelName) (model.Fingerprints, error)
+	GetFingerprintsForLabelName(clientmodel.LabelName) (clientmodel.Fingerprints, error)
 
 	// Get the metric associated with the provided fingerprint.
-	GetMetricForFingerprint(*model.Fingerprint) (model.Metric, error)
+	GetMetricForFingerprint(*clientmodel.Fingerprint) (clientmodel.Metric, error)
 
 	// Get the two metric values that are immediately adjacent to a given time.
-	GetValueAtTime(*model.Fingerprint, time.Time) model.Values
+	GetValueAtTime(*clientmodel.Fingerprint, time.Time) Values
 	// Get the boundary values of an interval: the first value older than the
 	// interval start, and the first value younger than the interval end.
-	GetBoundaryValues(*model.Fingerprint, model.Interval) model.Values
+	GetBoundaryValues(*clientmodel.Fingerprint, Interval) Values
 	// Get all values contained within a provided interval.
-	GetRangeValues(*model.Fingerprint, model.Interval) model.Values
+	GetRangeValues(*clientmodel.Fingerprint, Interval) Values
 	// Get all label values that are associated with a given label name.
-	GetAllValuesForLabel(model.LabelName) (model.LabelValues, error)
+	GetAllValuesForLabel(clientmodel.LabelName) (clientmodel.LabelValues, error)
 
 	// Requests the storage stack to build a materialized View of the values
 	// contained therein.
@@ -65,17 +67,17 @@ type MetricPersistence interface {
 // View provides a view of the values in the datastore subject to the request
 // of a preloading operation.
 type View interface {
-	GetValueAtTime(*model.Fingerprint, time.Time) model.Values
-	GetBoundaryValues(*model.Fingerprint, model.Interval) model.Values
-	GetRangeValues(*model.Fingerprint, model.Interval) model.Values
+	GetValueAtTime(*clientmodel.Fingerprint, time.Time) Values
+	GetBoundaryValues(*clientmodel.Fingerprint, Interval) Values
+	GetRangeValues(*clientmodel.Fingerprint, Interval) Values
 
 	// Destroy this view.
 	Close()
 }
 
 type Series interface {
-	Fingerprint() *model.Fingerprint
-	Metric() model.Metric
+	Fingerprint() *clientmodel.Fingerprint
+	Metric() clientmodel.Metric
 }
 
 type IteratorsForFingerprintBuilder interface {

storage/metric/labelpair.go

@@ -11,29 +11,47 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package model
+package metric
+
+import (
+	clientmodel "github.com/prometheus/client_golang/model"
+)
 
 type LabelPair struct {
-	Name  LabelName
-	Value LabelValue
+	Name  clientmodel.LabelName
+	Value clientmodel.LabelValue
 }
 
-type LabelPairs []LabelPair
+func (l *LabelPair) Equal(o *LabelPair) bool {
+	switch {
+	case l.Name != o.Name:
+		return false
+	case l.Value != o.Value:
+		return false
+	default:
+		return true
+	}
+}
+
+type LabelPairs []*LabelPair
 
 func (l LabelPairs) Len() int {
 	return len(l)
 }
 
 func (l LabelPairs) Less(i, j int) bool {
-	if l[i].Name < l[j].Name {
+	switch {
+	case l[i].Name > l[j].Name:
+		return false
+	case l[i].Name < l[j].Name:
 		return true
-	}
-
-	if l[i].Value < l[j].Value {
+	case l[i].Value > l[j].Value:
+		return false
+	case l[i].Value < l[j].Value:
 		return true
+	default:
+		return false
 	}
-
-	return false
 }
 
 func (l LabelPairs) Swap(i, j int) {

storage/metric/labelpair_test.go

@@ -11,12 +11,13 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package model
+package metric
 
 import (
-	"github.com/prometheus/prometheus/utility/test"
 	"sort"
 	"testing"
+
+	"github.com/prometheus/prometheus/utility/test"
 )
 
 func testLabelPairs(t test.Tester) {
@@ -66,7 +67,7 @@ func testLabelPairs(t test.Tester) {
 		sort.Sort(scenario.in)
 
 		for j, expected := range scenario.out {
-			if expected != scenario.in[j] {
+			if !expected.Equal(scenario.in[j]) {
 				t.Errorf("%d.%d expected %s, got %s", i, j, expected, scenario.in[j])
 			}
 		}

storage/metric/leveldb.go

@@ -23,10 +23,11 @@ import (
 
 	"code.google.com/p/goprotobuf/proto"
 
+	clientmodel "github.com/prometheus/client_golang/model"
+
 	dto "github.com/prometheus/prometheus/model/generated"
 	index "github.com/prometheus/prometheus/storage/raw/index/leveldb"
 
-	"github.com/prometheus/prometheus/model"
 	"github.com/prometheus/prometheus/storage"
 	"github.com/prometheus/prometheus/storage/raw/leveldb"
 	"github.com/prometheus/prometheus/utility"
@@ -92,7 +93,7 @@ func (l *LevelDBMetricPersistence) Close() {
 func NewLevelDBMetricPersistence(baseDirectory string) (*LevelDBMetricPersistence, error) {
 	workers := utility.NewUncertaintyGroup(7)
 
-	emission := &LevelDBMetricPersistence{}
+	emission := new(LevelDBMetricPersistence)
 
 	var subsystemOpeners = []struct {
 		name   string
@@ -172,14 +173,14 @@ func NewLevelDBMetricPersistence(baseDirectory string) (*LevelDBMetricPersistenc
 	return emission, nil
 }
 
-func (l *LevelDBMetricPersistence) AppendSample(sample model.Sample) (err error) {
+func (l *LevelDBMetricPersistence) AppendSample(sample *clientmodel.Sample) (err error) {
 	defer func(begin time.Time) {
 		duration := time.Since(begin)
 
 		recordOutcome(duration, err, map[string]string{operation: appendSample, result: success}, map[string]string{operation: appendSample, result: failure})
 	}(time.Now())
 
-	err = l.AppendSamples(model.Samples{sample})
+	err = l.AppendSamples(clientmodel.Samples{sample})
 
 	return
 }
@@ -187,30 +188,28 @@ func (l *LevelDBMetricPersistence) AppendSample(sample model.Sample) (err error)
 // groupByFingerprint collects all of the provided samples, groups them
 // together by their respective metric fingerprint, and finally sorts
 // them chronologically.
-func groupByFingerprint(samples model.Samples) map[model.Fingerprint]model.Samples {
-	fingerprintToSamples := map[model.Fingerprint]model.Samples{}
+func groupByFingerprint(samples clientmodel.Samples) map[clientmodel.Fingerprint]clientmodel.Samples {
+	fingerprintToSamples := map[clientmodel.Fingerprint]clientmodel.Samples{}
 
 	for _, sample := range samples {
-		fingerprint := *model.NewFingerprintFromMetric(sample.Metric)
-		samples := fingerprintToSamples[fingerprint]
+		fingerprint := &clientmodel.Fingerprint{}
+		fingerprint.LoadFromMetric(sample.Metric)
+		samples := fingerprintToSamples[*fingerprint]
 		samples = append(samples, sample)
-		fingerprintToSamples[fingerprint] = samples
+		fingerprintToSamples[*fingerprint] = samples
 	}
 
 	sortingSemaphore := make(chan bool, sortConcurrency)
 	doneSorting := sync.WaitGroup{}
 
-	for i := 0; i < sortConcurrency; i++ {
-		sortingSemaphore <- true
-	}
-
 	for _, samples := range fingerprintToSamples {
 		doneSorting.Add(1)
 
-		<-sortingSemaphore
-		go func(samples model.Samples) {
+		sortingSemaphore <- true
+		go func(samples clientmodel.Samples) {
 			sort.Sort(samples)
-			sortingSemaphore <- true
+
+			<-sortingSemaphore
 			doneSorting.Done()
 		}(samples)
 	}
@@ -223,18 +222,18 @@ func groupByFingerprint(samples model.Samples) map[model.Fingerprint]model.Sampl
 // findUnindexedMetrics scours the metric membership index for each given Metric
 // in the keyspace and returns a map of Fingerprint-Metric pairs that are
 // absent.
-func (l *LevelDBMetricPersistence) findUnindexedMetrics(candidates map[model.Fingerprint]model.Metric) (unindexed map[model.Fingerprint]model.Metric, err error) {
+func (l *LevelDBMetricPersistence) findUnindexedMetrics(candidates map[clientmodel.Fingerprint]clientmodel.Metric) (unindexed map[clientmodel.Fingerprint]clientmodel.Metric, err error) {
 	defer func(begin time.Time) {
 		duration := time.Since(begin)
 
 		recordOutcome(duration, err, map[string]string{operation: findUnindexedMetrics, result: success}, map[string]string{operation: findUnindexedMetrics, result: failure})
 	}(time.Now())
 
-	unindexed = make(map[model.Fingerprint]model.Metric)
+	unindexed = make(map[clientmodel.Fingerprint]clientmodel.Metric)
 
-	// Determine which metrics are unknown in the database.
+	dto := &dto.Metric{}
 	for fingerprint, metric := range candidates {
-		dto := model.MetricToDTO(metric)
+		dumpMetric(dto, metric)
 		indexHas, err := l.hasIndexMetric(dto)
 		if err != nil {
 			return unindexed, err
@@ -244,7 +243,7 @@ func (l *LevelDBMetricPersistence) findUnindexedMetrics(candidates map[model.Fin
 		}
 	}
 
-	return
+	return unindexed, nil
 }
 
 // indexLabelNames accumulates all label name to fingerprint index entries for
@@ -252,14 +251,14 @@ func (l *LevelDBMetricPersistence) findUnindexedMetrics(candidates map[model.Fin
 // the index to reflect the new state.
 //
 // This operation is idempotent.
-func (l *LevelDBMetricPersistence) indexLabelNames(metrics map[model.Fingerprint]model.Metric) (err error) {
+func (l *LevelDBMetricPersistence) indexLabelNames(metrics map[clientmodel.Fingerprint]clientmodel.Metric) (err error) {
 	defer func(begin time.Time) {
 		duration := time.Since(begin)
 
 		recordOutcome(duration, err, map[string]string{operation: indexLabelNames, result: success}, map[string]string{operation: indexLabelNames, result: failure})
 	}(time.Now())
 
-	labelNameFingerprints := map[model.LabelName]utility.Set{}
+	labelNameFingerprints := map[clientmodel.LabelName]utility.Set{}
 
 	for fingerprint, metric := range metrics {
 		for labelName := range metric {
@@ -286,9 +285,9 @@ func (l *LevelDBMetricPersistence) indexLabelNames(metrics map[model.Fingerprint
 	defer batch.Close()
 
 	for labelName, fingerprintSet := range labelNameFingerprints {
-		fingerprints := model.Fingerprints{}
+		fingerprints := clientmodel.Fingerprints{}
 		for e := range fingerprintSet {
-			fingerprint := e.(model.Fingerprint)
+			fingerprint := e.(clientmodel.Fingerprint)
 			fingerprints = append(fingerprints, &fingerprint)
 		}
 
@@ -297,9 +296,11 @@ func (l *LevelDBMetricPersistence) indexLabelNames(metrics map[model.Fingerprint
 		key := &dto.LabelName{
 			Name: proto.String(string(labelName)),
 		}
-		value := &dto.FingerprintCollection{}
+		value := new(dto.FingerprintCollection)
 		for _, fingerprint := range fingerprints {
-			value.Member = append(value.Member, fingerprint.ToDTO())
+			f := new(dto.Fingerprint)
+			dumpFingerprint(f, fingerprint)
+			value.Member = append(value.Member, f)
 		}
 
 		batch.Put(key, value)
@@ -318,18 +319,18 @@ func (l *LevelDBMetricPersistence) indexLabelNames(metrics map[model.Fingerprint
 // the index to reflect the new state.
 //
 // This operation is idempotent.
-func (l *LevelDBMetricPersistence) indexLabelPairs(metrics map[model.Fingerprint]model.Metric) (err error) {
+func (l *LevelDBMetricPersistence) indexLabelPairs(metrics map[clientmodel.Fingerprint]clientmodel.Metric) (err error) {
 	defer func(begin time.Time) {
 		duration := time.Since(begin)
 
 		recordOutcome(duration, err, map[string]string{operation: indexLabelPairs, result: success}, map[string]string{operation: indexLabelPairs, result: failure})
 	}(time.Now())
 
-	labelPairFingerprints := map[model.LabelPair]utility.Set{}
+	labelPairFingerprints := map[LabelPair]utility.Set{}
 
 	for fingerprint, metric := range metrics {
 		for labelName, labelValue := range metric {
-			labelPair := model.LabelPair{
+			labelPair := LabelPair{
 				Name:  labelName,
 				Value: labelValue,
 			}
@@ -337,7 +338,7 @@ func (l *LevelDBMetricPersistence) indexLabelPairs(metrics map[model.Fingerprint
 			if !ok {
 				fingerprintSet = utility.Set{}
 
-				fingerprints, err := l.GetFingerprintsForLabelSet(model.LabelSet{
+				fingerprints, err := l.GetFingerprintsForLabelSet(clientmodel.LabelSet{
 					labelName: labelValue,
 				})
 				if err != nil {
@@ -358,9 +359,9 @@ func (l *LevelDBMetricPersistence) indexLabelPairs(metrics map[model.Fingerprint
 	defer batch.Close()
 
 	for labelPair, fingerprintSet := range labelPairFingerprints {
-		fingerprints := model.Fingerprints{}
+		fingerprints := clientmodel.Fingerprints{}
 		for e := range fingerprintSet {
-			fingerprint := e.(model.Fingerprint)
+			fingerprint := e.(clientmodel.Fingerprint)
 			fingerprints = append(fingerprints, &fingerprint)
 		}
 
@@ -370,9 +371,11 @@ func (l *LevelDBMetricPersistence) indexLabelPairs(metrics map[model.Fingerprint
 			Name:  proto.String(string(labelPair.Name)),
 			Value: proto.String(string(labelPair.Value)),
 		}
-		value := &dto.FingerprintCollection{}
+		value := new(dto.FingerprintCollection)
 		for _, fingerprint := range fingerprints {
-			value.Member = append(value.Member, fingerprint.ToDTO())
+			f := new(dto.Fingerprint)
+			dumpFingerprint(f, fingerprint)
+			value.Member = append(value.Member, f)
 		}
 
 		batch.Put(key, value)
@@ -390,7 +393,7 @@ func (l *LevelDBMetricPersistence) indexLabelPairs(metrics map[model.Fingerprint
 // in the index and then bulk updates.
 //
 // This operation is idempotent.
-func (l *LevelDBMetricPersistence) indexFingerprints(metrics map[model.Fingerprint]model.Metric) (err error) {
+func (l *LevelDBMetricPersistence) indexFingerprints(metrics map[clientmodel.Fingerprint]clientmodel.Metric) (err error) {
 	defer func(begin time.Time) {
 		duration := time.Since(begin)
 
@@ -401,7 +404,11 @@ func (l *LevelDBMetricPersistence) indexFingerprints(metrics map[model.Fingerpri
 	defer batch.Close()
 
 	for fingerprint, metric := range metrics {
-		batch.Put(fingerprint.ToDTO(), model.MetricToDTO(metric))
+		f := new(dto.Fingerprint)
+		dumpFingerprint(f, &fingerprint)
+		m := &dto.Metric{}
+		dumpMetric(m, metric)
+		batch.Put(f, m)
 	}
 
 	err = l.fingerprintToMetrics.Commit(batch)
@@ -417,7 +424,7 @@ var existenceIdentity = &dto.MembershipIndexValue{}
 // indexMetrics takes groups of samples, determines which ones contain metrics
 // that are unknown to the storage stack, and then proceeds to update all
 // affected indices.
-func (l *LevelDBMetricPersistence) indexMetrics(fingerprints map[model.Fingerprint]model.Metric) (err error) {
+func (l *LevelDBMetricPersistence) indexMetrics(fingerprints map[clientmodel.Fingerprint]clientmodel.Metric) (err error) {
 	defer func(begin time.Time) {
 		duration := time.Since(begin)
 
@@ -425,7 +432,7 @@ func (l *LevelDBMetricPersistence) indexMetrics(fingerprints map[model.Fingerpri
 	}(time.Now())
 
 	var (
-		absentMetrics map[model.Fingerprint]model.Metric
+		absentMetrics map[clientmodel.Fingerprint]clientmodel.Metric
 	)
 
 	absentMetrics, err = l.findUnindexedMetrics(fingerprints)
@@ -466,7 +473,9 @@ func (l *LevelDBMetricPersistence) indexMetrics(fingerprints map[model.Fingerpri
 	defer batch.Close()
 
 	for _, metric := range absentMetrics {
-		batch.Put(model.MetricToDTO(metric), existenceIdentity)
+		m := &dto.Metric{}
+		dumpMetric(m, metric)
+		batch.Put(m, existenceIdentity)
 	}
 
 	err = l.metricMembershipIndex.Commit(batch)
@@ -478,7 +487,7 @@ func (l *LevelDBMetricPersistence) indexMetrics(fingerprints map[model.Fingerpri
 	return
 }
 
-func (l *LevelDBMetricPersistence) refreshHighWatermarks(groups map[model.Fingerprint]model.Samples) (err error) {
+func (l *LevelDBMetricPersistence) refreshHighWatermarks(groups map[clientmodel.Fingerprint]clientmodel.Samples) (err error) {
 	defer func(begin time.Time) {
 		duration := time.Since(begin)
 
@@ -491,7 +500,9 @@ func (l *LevelDBMetricPersistence) refreshHighWatermarks(groups map[model.Finger
 	value := &dto.MetricHighWatermark{}
 	for fingerprint, samples := range groups {
 		value.Reset()
-		present, err := l.MetricHighWatermarks.Get(fingerprint.ToDTO(), value)
+		f := new(dto.Fingerprint)
+		dumpFingerprint(f, &fingerprint)
+		present, err := l.MetricHighWatermarks.Get(f, value)
 		if err != nil {
 			return err
 		}
@@ -500,7 +511,7 @@ func (l *LevelDBMetricPersistence) refreshHighWatermarks(groups map[model.Finger
 
 		if !present {
 			value.Timestamp = proto.Int64(newestSampleTimestamp.Unix())
-			batch.Put(fingerprint.ToDTO(), value)
+			batch.Put(f, value)
 
 			continue
 		}
@@ -508,7 +519,7 @@ func (l *LevelDBMetricPersistence) refreshHighWatermarks(groups map[model.Finger
 		// BUG(matt): Repace this with watermark management.
 		if newestSampleTimestamp.After(time.Unix(value.GetTimestamp(), 0)) {
 			value.Timestamp = proto.Int64(newestSampleTimestamp.Unix())
-			batch.Put(fingerprint.ToDTO(), value)
+			batch.Put(f, value)
 		}
 	}
 
@@ -520,7 +531,7 @@ func (l *LevelDBMetricPersistence) refreshHighWatermarks(groups map[model.Finger
 	return nil
 }
 
-func (l *LevelDBMetricPersistence) AppendSamples(samples model.Samples) (err error) {
+func (l *LevelDBMetricPersistence) AppendSamples(samples clientmodel.Samples) (err error) {
 	defer func(begin time.Time) {
 		duration := time.Since(begin)
 
@@ -531,8 +542,8 @@ func (l *LevelDBMetricPersistence) AppendSamples(samples model.Samples) (err err
 	indexErrChan := make(chan error, 1)
 	watermarkErrChan := make(chan error, 1)
 
-	go func(groups map[model.Fingerprint]model.Samples) {
-		metrics := map[model.Fingerprint]model.Metric{}
+	go func(groups map[clientmodel.Fingerprint]clientmodel.Samples) {
+		metrics := map[clientmodel.Fingerprint]clientmodel.Metric{}
 
 		for fingerprint, samples := range groups {
 			metrics[fingerprint] = samples[0].Metric
@@ -541,7 +552,7 @@ func (l *LevelDBMetricPersistence) AppendSamples(samples model.Samples) (err err
 		indexErrChan <- l.indexMetrics(metrics)
 	}(fingerprintToSamples)
 
-	go func(groups map[model.Fingerprint]model.Samples) {
+	go func(groups map[clientmodel.Fingerprint]clientmodel.Samples) {
 		watermarkErrChan <- l.refreshHighWatermarks(groups)
 	}(fingerprintToSamples)
 
@@ -564,22 +575,24 @@ func (l *LevelDBMetricPersistence) AppendSamples(samples model.Samples) (err err
 			chunk := group[0:take]
 			group = group[take:lengthOfGroup]
 
-			key := model.SampleKey{
+			key := SampleKey{
 				Fingerprint:    &fingerprint,
 				FirstTimestamp: chunk[0].Timestamp,
 				LastTimestamp:  chunk[take-1].Timestamp,
 				SampleCount:    uint32(take),
-			}.ToDTO()
+			}
 
 			value := &dto.SampleValueSeries{}
 			for _, sample := range chunk {
 				value.Value = append(value.Value, &dto.SampleValueSeries_Value{
 					Timestamp: proto.Int64(sample.Timestamp.Unix()),
-					Value:     sample.Value.ToDTO(),
+					Value:     proto.Float64(float64(sample.Value)),
 				})
 			}
 
-			samplesBatch.Put(key, value)
+			k := &dto.SampleKey{}
+			key.Dump(k)
+			samplesBatch.Put(k, value)
 		}
 	}
 
@@ -601,48 +614,27 @@ func (l *LevelDBMetricPersistence) AppendSamples(samples model.Samples) (err err
 	return
 }
 
-func extractSampleKey(i leveldb.Iterator) (key model.SampleKey, err error) {
+func extractSampleKey(i leveldb.Iterator) (*SampleKey, error) {
 	k := &dto.SampleKey{}
-	err = proto.Unmarshal(i.Key(), k)
+	err := proto.Unmarshal(i.Key(), k)
 	if err != nil {
-		return
+		return nil, err
 	}
 
-	key = model.NewSampleKeyFromDTO(k)
+	key := &SampleKey{}
+	key.Load(k)
 
-	return
+	return key, nil
 }
 
-func extractSampleValues(i leveldb.Iterator) (values model.Values, err error) {
+func extractSampleValues(i leveldb.Iterator) (Values, error) {
 	v := &dto.SampleValueSeries{}
-	err = proto.Unmarshal(i.Value(), v)
+	err := proto.Unmarshal(i.Value(), v)
 	if err != nil {
-		return
+		return nil, err
 	}
 
-	values = model.NewValuesFromDTO(v)
-
-	return
-}
-
-func fingerprintsEqual(l *dto.Fingerprint, r *dto.Fingerprint) bool {
-	if l == r {
-		return true
-	}
-
-	if l == nil && r == nil {
-		return true
-	}
-
-	if r.Signature == l.Signature {
-		return true
-	}
-
-	if *r.Signature == *l.Signature {
-		return true
-	}
-
-	return false
+	return NewValuesFromDTO(v), nil
 }
 
 func (l *LevelDBMetricPersistence) hasIndexMetric(dto *dto.Metric) (value bool, err error) {
@@ -681,7 +673,7 @@ func (l *LevelDBMetricPersistence) HasLabelName(dto *dto.LabelName) (value bool,
 	return
 }
 
-func (l *LevelDBMetricPersistence) GetFingerprintsForLabelSet(labelSet model.LabelSet) (fps model.Fingerprints, err error) {
+func (l *LevelDBMetricPersistence) GetFingerprintsForLabelSet(labelSet clientmodel.LabelSet) (fps clientmodel.Fingerprints, err error) {
 	defer func(begin time.Time) {
 		duration := time.Since(begin)
 
@@ -689,10 +681,17 @@ func (l *LevelDBMetricPersistence) GetFingerprintsForLabelSet(labelSet model.Lab
 	}(time.Now())
 
 	sets := []utility.Set{}
+	pair := &dto.LabelPair{}
+	unmarshaled := new(dto.FingerprintCollection)
 
-	for _, labelSetDTO := range model.LabelSetToDTOs(&labelSet) {
-		unmarshaled := &dto.FingerprintCollection{}
-		present, err := l.labelSetToFingerprints.Get(labelSetDTO, unmarshaled)
+	for name, value := range labelSet {
+		pair.Reset()
+		unmarshaled.Reset()
+
+		pair.Name = proto.String(string(name))
+		pair.Value = proto.String(string(value))
+
+		present, err := l.labelSetToFingerprints.Get(pair, unmarshaled)
 		if err != nil {
 			return fps, err
 		}
@@ -703,7 +702,8 @@ func (l *LevelDBMetricPersistence) GetFingerprintsForLabelSet(labelSet model.Lab
 		set := utility.Set{}
 
 		for _, m := range unmarshaled.Member {
-			fp := model.NewFingerprintFromRowKey(*m.Signature)
+			fp := &clientmodel.Fingerprint{}
+			loadFingerprint(fp, m)
 			set.Add(*fp)
 		}
 
@@ -712,7 +712,7 @@ func (l *LevelDBMetricPersistence) GetFingerprintsForLabelSet(labelSet model.Lab
 
 	numberOfSets := len(sets)
 	if numberOfSets == 0 {
-		return
+		return nil, nil
 	}
 
 	base := sets[0]
@@ -720,22 +720,24 @@ func (l *LevelDBMetricPersistence) GetFingerprintsForLabelSet(labelSet model.Lab
 		base = base.Intersection(sets[i])
 	}
 	for _, e := range base.Elements() {
-		fingerprint := e.(model.Fingerprint)
+		fingerprint := e.(clientmodel.Fingerprint)
 		fps = append(fps, &fingerprint)
 	}
 
-	return
+	return fps, nil
 }
 
-func (l *LevelDBMetricPersistence) GetFingerprintsForLabelName(labelName model.LabelName) (fps model.Fingerprints, err error) {
+func (l *LevelDBMetricPersistence) GetFingerprintsForLabelName(labelName clientmodel.LabelName) (fps clientmodel.Fingerprints, err error) {
 	defer func(begin time.Time) {
 		duration := time.Since(begin)
 
 		recordOutcome(duration, err, map[string]string{operation: getFingerprintsForLabelName, result: success}, map[string]string{operation: getFingerprintsForLabelName, result: failure})
 	}(time.Now())
 
-	unmarshaled := &dto.FingerprintCollection{}
-	present, err := l.labelNameToFingerprints.Get(model.LabelNameToDTO(&labelName), unmarshaled)
+	unmarshaled := new(dto.FingerprintCollection)
+	d := &dto.LabelName{}
+	dumpLabelName(d, labelName)
+	present, err := l.labelNameToFingerprints.Get(d, unmarshaled)
 	if err != nil {
 		return nil, err
 	}
@@ -744,14 +746,15 @@ func (l *LevelDBMetricPersistence) GetFingerprintsForLabelName(labelName model.L
 	}
 
 	for _, m := range unmarshaled.Member {
-		fp := model.NewFingerprintFromRowKey(*m.Signature)
+		fp := &clientmodel.Fingerprint{}
+		loadFingerprint(fp, m)
 		fps = append(fps, fp)
 	}
 
 	return fps, nil
 }
 
-func (l *LevelDBMetricPersistence) GetMetricForFingerprint(f *model.Fingerprint) (m model.Metric, err error) {
+func (l *LevelDBMetricPersistence) GetMetricForFingerprint(f *clientmodel.Fingerprint) (m clientmodel.Metric, err error) {
 	defer func(begin time.Time) {
 		duration := time.Since(begin)
 
@@ -759,7 +762,9 @@ func (l *LevelDBMetricPersistence) GetMetricForFingerprint(f *model.Fingerprint)
 	}(time.Now())
 
 	unmarshaled := &dto.Metric{}
-	present, err := l.fingerprintToMetrics.Get(model.FingerprintToDTO(f), unmarshaled)
+	d := new(dto.Fingerprint)
+	dumpFingerprint(d, f)
+	present, err := l.fingerprintToMetrics.Get(d, unmarshaled)
 	if err != nil {
 		return nil, err
 	}
@@ -767,24 +772,24 @@ func (l *LevelDBMetricPersistence) GetMetricForFingerprint(f *model.Fingerprint)
 		return nil, nil
 	}
 
-	m = model.Metric{}
+	m = clientmodel.Metric{}
 
 	for _, v := range unmarshaled.LabelPair {
-		m[model.LabelName(*v.Name)] = model.LabelValue(*v.Value)
+		m[clientmodel.LabelName(v.GetName())] = clientmodel.LabelValue(v.GetValue())
 	}
 
 	return m, nil
 }
 
-func (l LevelDBMetricPersistence) GetValueAtTime(f *model.Fingerprint, t time.Time) model.Values {
+func (l *LevelDBMetricPersistence) GetValueAtTime(f *clientmodel.Fingerprint, t time.Time) Values {
 	panic("Not implemented")
 }
 
-func (l LevelDBMetricPersistence) GetBoundaryValues(f *model.Fingerprint, i model.Interval) model.Values {
+func (l *LevelDBMetricPersistence) GetBoundaryValues(f *clientmodel.Fingerprint, i Interval) Values {
 	panic("Not implemented")
 }
 
-func (l *LevelDBMetricPersistence) GetRangeValues(f *model.Fingerprint, i model.Interval) model.Values {
+func (l *LevelDBMetricPersistence) GetRangeValues(f *clientmodel.Fingerprint, i Interval) Values {
 	panic("Not implemented")
 }
 
@@ -797,9 +802,9 @@ func (d *MetricKeyDecoder) DecodeKey(in interface{}) (out interface{}, err error
 		return
 	}
 
-	out = model.LabelPair{
-		Name:  model.LabelName(*unmarshaled.Name),
-		Value: model.LabelValue(*unmarshaled.Value),
+	out = LabelPair{
+		Name:  clientmodel.LabelName(*unmarshaled.Name),
+		Value: clientmodel.LabelValue(*unmarshaled.Value),
 	}
 
 	return
@@ -810,11 +815,11 @@ func (d *MetricKeyDecoder) DecodeValue(in interface{}) (out interface{}, err err
 }
 
 type LabelNameFilter struct {
-	labelName model.LabelName
+	labelName clientmodel.LabelName
 }
 
 func (f LabelNameFilter) Filter(key, value interface{}) (filterResult storage.FilterResult) {
-	labelPair, ok := key.(model.LabelPair)
+	labelPair, ok := key.(LabelPair)
 	if ok && labelPair.Name == f.labelName {
 		return storage.ACCEPT
 	}
@@ -822,16 +827,16 @@ func (f LabelNameFilter) Filter(key, value interface{}) (filterResult storage.Fi
 }
 
 type CollectLabelValuesOp struct {
-	labelValues []model.LabelValue
+	labelValues []clientmodel.LabelValue
 }
 
 func (op *CollectLabelValuesOp) Operate(key, value interface{}) (err *storage.OperatorError) {
-	labelPair := key.(model.LabelPair)
-	op.labelValues = append(op.labelValues, model.LabelValue(labelPair.Value))
+	labelPair := key.(LabelPair)
+	op.labelValues = append(op.labelValues, clientmodel.LabelValue(labelPair.Value))
 	return
 }
 
-func (l *LevelDBMetricPersistence) GetAllValuesForLabel(labelName model.LabelName) (values model.LabelValues, err error) {
+func (l *LevelDBMetricPersistence) GetAllValuesForLabel(labelName clientmodel.LabelName) (values clientmodel.LabelValues, err error) {
 	filter := &LabelNameFilter{
 		labelName: labelName,
 	}

storage/metric/memory.go

@@ -18,7 +18,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/prometheus/prometheus/model"
+	clientmodel "github.com/prometheus/client_golang/model"
+
 	"github.com/prometheus/prometheus/utility"
 )
 
@@ -29,49 +30,49 @@ const initialSeriesArenaSize = 4 * 60
 // Models a given sample entry stored in the in-memory arena.
 type value interface {
 	// Gets the given value.
-	get() model.SampleValue
+	get() clientmodel.SampleValue
 }
 
 // Models a single sample value.  It presumes that there is either no subsequent
 // value seen or that any subsequent values are of a different value.
-type singletonValue model.SampleValue
+type singletonValue clientmodel.SampleValue
 
-func (v singletonValue) get() model.SampleValue {
-	return model.SampleValue(v)
+func (v singletonValue) get() clientmodel.SampleValue {
+	return clientmodel.SampleValue(v)
 }
 
 type stream struct {
 	sync.RWMutex
 
-	metric model.Metric
-	values model.Values
+	metric clientmodel.Metric
+	values Values
 }
 
-func (s *stream) add(timestamp time.Time, value model.SampleValue) {
+func (s *stream) add(timestamp time.Time, value clientmodel.SampleValue) {
 	s.Lock()
 	defer s.Unlock()
 
 	// BUG(all): https://github.com/prometheus/prometheus/pull/265/files#r4336435.
 
-	s.values = append(s.values, model.SamplePair{
+	s.values = append(s.values, &SamplePair{
 		Timestamp: timestamp,
 		Value:     value,
 	})
 }
 
-func (s *stream) clone() model.Values {
+func (s *stream) clone() Values {
 	s.RLock()
 	defer s.RUnlock()
 
 	// BUG(all): Examine COW technique.
 
-	clone := make(model.Values, len(s.values))
+	clone := make(Values, len(s.values))
 	copy(clone, s.values)
 
 	return clone
 }
 
-func (s *stream) getValueAtTime(t time.Time) model.Values {
+func (s *stream) getValueAtTime(t time.Time) Values {
 	s.RLock()
 	defer s.RUnlock()
 
@@ -79,29 +80,29 @@ func (s *stream) getValueAtTime(t time.Time) model.Values {
 	l := len(s.values)
 	switch l {
 	case 0:
-		return model.Values{}
+		return Values{}
 	case 1:
-		return model.Values{s.values[0]}
+		return Values{s.values[0]}
 	default:
 		index := sort.Search(l, func(i int) bool {
 			return !s.values[i].Timestamp.Before(t)
 		})
 
 		if index == 0 {
-			return model.Values{s.values[0]}
+			return Values{s.values[0]}
 		}
 		if index == l {
-			return model.Values{s.values[l-1]}
+			return Values{s.values[l-1]}
 		}
 
 		if s.values[index].Timestamp.Equal(t) {
-			return model.Values{s.values[index]}
+			return Values{s.values[index]}
 		}
-		return model.Values{s.values[index-1], s.values[index]}
+		return Values{s.values[index-1], s.values[index]}
 	}
 }
 
-func (s *stream) getBoundaryValues(in model.Interval) model.Values {
+func (s *stream) getBoundaryValues(in Interval) Values {
 	s.RLock()
 	defer s.RUnlock()
 
@@ -116,15 +117,15 @@ func (s *stream) getBoundaryValues(in model.Interval) model.Values {
 	resultRange := s.values[oldest:newest]
 	switch len(resultRange) {
 	case 0:
-		return model.Values{}
+		return Values{}
 	case 1:
-		return model.Values{resultRange[0]}
+		return Values{resultRange[0]}
 	default:
-		return model.Values{resultRange[0], resultRange[len(resultRange)-1]}
+		return Values{resultRange[0], resultRange[len(resultRange)-1]}
 	}
 }
 
-func (s *stream) getRangeValues(in model.Interval) model.Values {
+func (s *stream) getRangeValues(in Interval) Values {
 	s.RLock()
 	defer s.RUnlock()
 
@@ -136,7 +137,7 @@ func (s *stream) getRangeValues(in model.Interval) model.Values {
 		return s.values[i].Timestamp.After(in.NewestInclusive)
 	})
 
-	result := make(model.Values, newest-oldest)
+	result := make(Values, newest-oldest)
 	copy(result, s.values[oldest:newest])
 
 	return result
@@ -146,10 +147,10 @@ func (s *stream) empty() bool {
 	return len(s.values) == 0
 }
 
-func newStream(metric model.Metric) *stream {
+func newStream(metric clientmodel.Metric) *stream {
 	return &stream{
 		metric: metric,
-		values: make(model.Values, 0, initialSeriesArenaSize),
+		values: make(Values, 0, initialSeriesArenaSize),
 	}
 }
 
@@ -157,9 +158,9 @@ type memorySeriesStorage struct {
 	sync.RWMutex
 
 	wmCache                 *WatermarkCache
-	fingerprintToSeries     map[model.Fingerprint]*stream
-	labelPairToFingerprints map[model.LabelPair]model.Fingerprints
-	labelNameToFingerprints map[model.LabelName]model.Fingerprints
+	fingerprintToSeries     map[clientmodel.Fingerprint]*stream
+	labelPairToFingerprints map[LabelPair]clientmodel.Fingerprints
+	labelNameToFingerprints map[clientmodel.LabelName]clientmodel.Fingerprints
 }
 
 type MemorySeriesOptions struct {
@@ -168,7 +169,7 @@ type MemorySeriesOptions struct {
 	WatermarkCache *WatermarkCache
 }
 
-func (s *memorySeriesStorage) AppendSamples(samples model.Samples) error {
+func (s *memorySeriesStorage) AppendSamples(samples clientmodel.Samples) error {
 	for _, sample := range samples {
 		s.AppendSample(sample)
 	}
@@ -176,30 +177,32 @@ func (s *memorySeriesStorage) AppendSamples(samples model.Samples) error {
 	return nil
 }
 
-func (s *memorySeriesStorage) AppendSample(sample model.Sample) error {
+func (s *memorySeriesStorage) AppendSample(sample *clientmodel.Sample) error {
 	s.Lock()
 	defer s.Unlock()
 
-	fingerprint := model.NewFingerprintFromMetric(sample.Metric)
+	fingerprint := &clientmodel.Fingerprint{}
+	fingerprint.LoadFromMetric(sample.Metric)
 	series := s.getOrCreateSeries(sample.Metric, fingerprint)
 	series.add(sample.Timestamp, sample.Value)
 
 	if s.wmCache != nil {
-		s.wmCache.Set(fingerprint, &Watermarks{High: sample.Timestamp})
+		s.wmCache.Set(fingerprint, &watermarks{High: sample.Timestamp})
 	}
 
 	return nil
 }
 
-func (s *memorySeriesStorage) CreateEmptySeries(metric model.Metric) {
+func (s *memorySeriesStorage) CreateEmptySeries(metric clientmodel.Metric) {
 	s.Lock()
 	defer s.Unlock()
 
-	fingerprint := model.NewFingerprintFromMetric(metric)
+	fingerprint := &clientmodel.Fingerprint{}
+	fingerprint.LoadFromMetric(metric)
 	s.getOrCreateSeries(metric, fingerprint)
 }
 
-func (s *memorySeriesStorage) getOrCreateSeries(metric model.Metric, fingerprint *model.Fingerprint) *stream {
+func (s *memorySeriesStorage) getOrCreateSeries(metric clientmodel.Metric, fingerprint *clientmodel.Fingerprint) *stream {
 	series, ok := s.fingerprintToSeries[*fingerprint]
 
 	if !ok {
@@ -207,7 +210,7 @@ func (s *memorySeriesStorage) getOrCreateSeries(metric model.Metric, fingerprint
 		s.fingerprintToSeries[*fingerprint] = series
 
 		for k, v := range metric {
-			labelPair := model.LabelPair{
+			labelPair := LabelPair{
 				Name:  k,
 				Value: v,
 			}
@@ -223,8 +226,8 @@ func (s *memorySeriesStorage) getOrCreateSeries(metric model.Metric, fingerprint
 	return series
 }
 
-func (s *memorySeriesStorage) Flush(flushOlderThan time.Time, queue chan<- model.Samples) {
-	emptySeries := []model.Fingerprint{}
+func (s *memorySeriesStorage) Flush(flushOlderThan time.Time, queue chan<- clientmodel.Samples) {
+	emptySeries := clientmodel.Fingerprints{}
 
 	s.RLock()
 	for fingerprint, stream := range s.fingerprintToSeries {
@@ -237,10 +240,10 @@ func (s *memorySeriesStorage) Flush(flushOlderThan time.Time, queue chan<- model
 		i := sort.Search(len(stream.values), finder)
 		toArchive := stream.values[:i]
 		toKeep := stream.values[i:]
-		queued := make(model.Samples, 0, len(toArchive))
+		queued := make(clientmodel.Samples, 0, len(toArchive))
 
 		for _, value := range toArchive {
-			queued = append(queued, model.Sample{
+			queued = append(queued, &clientmodel.Sample{
 				Metric:    stream.metric,
 				Timestamp: value.Timestamp,
 				Value:     value.Value,
@@ -255,7 +258,7 @@ func (s *memorySeriesStorage) Flush(flushOlderThan time.Time, queue chan<- model
 		stream.values = toKeep
 
 		if len(toKeep) == 0 {
-			emptySeries = append(emptySeries, fingerprint)
+			emptySeries = append(emptySeries, &fingerprint)
 		}
 		stream.Unlock()
 	}
@@ -263,21 +266,21 @@ func (s *memorySeriesStorage) Flush(flushOlderThan time.Time, queue chan<- model
 
 	s.Lock()
 	for _, fingerprint := range emptySeries {
-		if s.fingerprintToSeries[fingerprint].empty() {
-			s.dropSeries(&fingerprint)
+		if s.fingerprintToSeries[*fingerprint].empty() {
+			s.dropSeries(fingerprint)
 		}
 	}
 	s.Unlock()
 }
 
 // Drop all references to a series, including any samples.
-func (s *memorySeriesStorage) dropSeries(fingerprint *model.Fingerprint) {
+func (s *memorySeriesStorage) dropSeries(fingerprint *clientmodel.Fingerprint) {
 	series, ok := s.fingerprintToSeries[*fingerprint]
 	if !ok {
 		return
 	}
 	for k, v := range series.metric {
-		labelPair := model.LabelPair{
+		labelPair := LabelPair{
 			Name:  k,
 			Value: v,
 		}
@@ -289,14 +292,14 @@ func (s *memorySeriesStorage) dropSeries(fingerprint *model.Fingerprint) {
 
 // Append raw samples, bypassing indexing. Only used to add data to views,
 // which don't need to lookup by metric.
-func (s *memorySeriesStorage) appendSamplesWithoutIndexing(fingerprint *model.Fingerprint, samples model.Values) {
+func (s *memorySeriesStorage) appendSamplesWithoutIndexing(fingerprint *clientmodel.Fingerprint, samples Values) {
 	s.Lock()
 	defer s.Unlock()
 
 	series, ok := s.fingerprintToSeries[*fingerprint]
 
 	if !ok {
-		series = newStream(model.Metric{})
+		series = newStream(clientmodel.Metric{})
 		s.fingerprintToSeries[*fingerprint] = series
 	}
 
@@ -305,13 +308,13 @@ func (s *memorySeriesStorage) appendSamplesWithoutIndexing(fingerprint *model.Fi
 	}
 }
 
-func (s *memorySeriesStorage) GetFingerprintsForLabelSet(l model.LabelSet) (fingerprints model.Fingerprints, err error) {
+func (s *memorySeriesStorage) GetFingerprintsForLabelSet(l clientmodel.LabelSet) (fingerprints clientmodel.Fingerprints, err error) {
 	s.RLock()
 	defer s.RUnlock()
 
 	sets := []utility.Set{}
 	for k, v := range l {
-		values := s.labelPairToFingerprints[model.LabelPair{
+		values := s.labelPairToFingerprints[LabelPair{
 			Name:  k,
 			Value: v,
 		}]
@@ -332,14 +335,14 @@ func (s *memorySeriesStorage) GetFingerprintsForLabelSet(l model.LabelSet) (fing
 		base = base.Intersection(sets[i])
 	}
 	for _, e := range base.Elements() {
-		fingerprint := e.(model.Fingerprint)
+		fingerprint := e.(clientmodel.Fingerprint)
 		fingerprints = append(fingerprints, &fingerprint)
 	}
 
 	return fingerprints, nil
 }
 
-func (s *memorySeriesStorage) GetFingerprintsForLabelName(l model.LabelName) (model.Fingerprints, error) {
+func (s *memorySeriesStorage) GetFingerprintsForLabelName(l clientmodel.LabelName) (clientmodel.Fingerprints, error) {
 	s.RLock()
 	defer s.RUnlock()
 
@@ -348,13 +351,13 @@ func (s *memorySeriesStorage) GetFingerprintsForLabelName(l model.LabelName) (mo
 		return nil, nil
 	}
 
-	fingerprints := make(model.Fingerprints, len(values))
+	fingerprints := make(clientmodel.Fingerprints, len(values))
 	copy(fingerprints, values)
 
 	return fingerprints, nil
 }
 
-func (s *memorySeriesStorage) GetMetricForFingerprint(f *model.Fingerprint) (model.Metric, error) {
+func (s *memorySeriesStorage) GetMetricForFingerprint(f *clientmodel.Fingerprint) (clientmodel.Metric, error) {
 	s.RLock()
 	defer s.RUnlock()
 
@@ -363,7 +366,7 @@ func (s *memorySeriesStorage) GetMetricForFingerprint(f *model.Fingerprint) (mod
 		return nil, nil
 	}
 
-	metric := model.Metric{}
+	metric := clientmodel.Metric{}
 	for label, value := range series.metric {
 		metric[label] = value
 	}
@@ -371,7 +374,7 @@ func (s *memorySeriesStorage) GetMetricForFingerprint(f *model.Fingerprint) (mod
 	return metric, nil
 }
 
-func (s *memorySeriesStorage) HasFingerprint(f *model.Fingerprint) bool {
+func (s *memorySeriesStorage) HasFingerprint(f *clientmodel.Fingerprint) bool {
 	s.RLock()
 	defer s.RUnlock()
 
@@ -380,7 +383,7 @@ func (s *memorySeriesStorage) HasFingerprint(f *model.Fingerprint) bool {
 	return has
 }
 
-func (s *memorySeriesStorage) CloneSamples(f *model.Fingerprint) model.Values {
+func (s *memorySeriesStorage) CloneSamples(f *clientmodel.Fingerprint) Values {
 	s.RLock()
 	defer s.RUnlock()
 
@@ -392,7 +395,7 @@ func (s *memorySeriesStorage) CloneSamples(f *model.Fingerprint) model.Values {
 	return series.clone()
 }
 
-func (s *memorySeriesStorage) GetValueAtTime(f *model.Fingerprint, t time.Time) model.Values {
+func (s *memorySeriesStorage) GetValueAtTime(f *clientmodel.Fingerprint, t time.Time) Values {
 	s.RLock()
 	defer s.RUnlock()
 
@@ -404,7 +407,7 @@ func (s *memorySeriesStorage) GetValueAtTime(f *model.Fingerprint, t time.Time)
 	return series.getValueAtTime(t)
 }
 
-func (s *memorySeriesStorage) GetBoundaryValues(f *model.Fingerprint, i model.Interval) model.Values {
+func (s *memorySeriesStorage) GetBoundaryValues(f *clientmodel.Fingerprint, i Interval) Values {
 	s.RLock()
 	defer s.RUnlock()
 
@@ -416,7 +419,7 @@ func (s *memorySeriesStorage) GetBoundaryValues(f *model.Fingerprint, i model.In
 	return series.getBoundaryValues(i)
 }
 
-func (s *memorySeriesStorage) GetRangeValues(f *model.Fingerprint, i model.Interval) model.Values {
+func (s *memorySeriesStorage) GetRangeValues(f *clientmodel.Fingerprint, i Interval) Values {
 	s.RLock()
 	defer s.RUnlock()
 
@@ -433,16 +436,16 @@ func (s *memorySeriesStorage) Close() {
 	s.Lock()
 	defer s.Unlock()
 
-	s.fingerprintToSeries = map[model.Fingerprint]*stream{}
-	s.labelPairToFingerprints = map[model.LabelPair]model.Fingerprints{}
-	s.labelNameToFingerprints = map[model.LabelName]model.Fingerprints{}
+	s.fingerprintToSeries = map[clientmodel.Fingerprint]*stream{}
+	s.labelPairToFingerprints = map[LabelPair]clientmodel.Fingerprints{}
+	s.labelNameToFingerprints = map[clientmodel.LabelName]clientmodel.Fingerprints{}
 }
 
-func (s *memorySeriesStorage) GetAllValuesForLabel(labelName model.LabelName) (values model.LabelValues, err error) {
+func (s *memorySeriesStorage) GetAllValuesForLabel(labelName clientmodel.LabelName) (values clientmodel.LabelValues, err error) {
 	s.RLock()
 	defer s.RUnlock()
 
-	valueSet := map[model.LabelValue]bool{}
+	valueSet := map[clientmodel.LabelValue]bool{}
 	for _, series := range s.fingerprintToSeries {
 		if value, ok := series.metric[labelName]; ok {
 			if !valueSet[value] {
@@ -457,9 +460,9 @@ func (s *memorySeriesStorage) GetAllValuesForLabel(labelName model.LabelName) (v
 
 func NewMemorySeriesStorage(o MemorySeriesOptions) *memorySeriesStorage {
 	return &memorySeriesStorage{
-		fingerprintToSeries:     make(map[model.Fingerprint]*stream),
-		labelPairToFingerprints: make(map[model.LabelPair]model.Fingerprints),
-		labelNameToFingerprints: make(map[model.LabelName]model.Fingerprints),
+		fingerprintToSeries:     make(map[clientmodel.Fingerprint]*stream),
+		labelPairToFingerprints: make(map[LabelPair]clientmodel.Fingerprints),
+		labelNameToFingerprints: make(map[clientmodel.LabelName]clientmodel.Fingerprints),
 		wmCache:                 o.WatermarkCache,
 	}
 }

storage/metric/memory_test.go

@@ -15,20 +15,21 @@ package metric
 
 import (
 	"fmt"
-	"github.com/prometheus/prometheus/model"
 	"runtime"
 	"testing"
 	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
 )
 
 func BenchmarkStreamAdd(b *testing.B) {
 	b.StopTimer()
-	s := newStream(model.Metric{})
+	s := newStream(clientmodel.Metric{})
 	times := make([]time.Time, 0, b.N)
-	samples := make([]model.SampleValue, 0, b.N)
+	samples := make([]clientmodel.SampleValue, 0, b.N)
 	for i := 0; i < b.N; i++ {
 		times = append(times, time.Date(i, 0, 0, 0, 0, 0, 0, time.UTC))
-		samples = append(samples, model.SampleValue(i))
+		samples = append(samples, clientmodel.SampleValue(i))
 	}
 
 	b.StartTimer()
@@ -50,16 +51,16 @@ func benchmarkAppendSample(b *testing.B, labels int) {
 	b.StopTimer()
 	s := NewMemorySeriesStorage(MemorySeriesOptions{})
 
-	metric := model.Metric{}
+	metric := clientmodel.Metric{}
 
 	for i := 0; i < labels; i++ {
-		metric[model.LabelName(fmt.Sprintf("label_%d", i))] = model.LabelValue(fmt.Sprintf("value_%d", i))
+		metric[clientmodel.LabelName(fmt.Sprintf("label_%d", i))] = clientmodel.LabelValue(fmt.Sprintf("value_%d", i))
 	}
-	samples := make(model.Samples, 0, b.N)
+	samples := make(clientmodel.Samples, 0, b.N)
 	for i := 0; i < b.N; i++ {
-		samples = append(samples, model.Sample{
+		samples = append(samples, &clientmodel.Sample{
 			Metric:    metric,
-			Value:     model.SampleValue(i),
+			Value:     clientmodel.SampleValue(i),
 			Timestamp: time.Date(i, 0, 0, 0, 0, 0, 0, time.UTC),
 		})
 	}

storage/metric/operation.go

@@ -18,8 +18,6 @@ import (
 	"math"
 	"sort"
 	"time"
-
-	"github.com/prometheus/prometheus/model"
 )
 
 // Encapsulates a primitive query operation.
@@ -27,7 +25,7 @@ type op interface {
 	// The time at which this operation starts.
 	StartsAt() time.Time
 	// Extract samples from stream of values and advance operation time.
-	ExtractSamples(in model.Values) (out model.Values)
+	ExtractSamples(in Values) (out Values)
 	// Get current operation time or nil if no subsequent work associated with
 	// this operator remains.
 	CurrentTime() *time.Time
@@ -74,7 +72,7 @@ func (g *getValuesAtTimeOp) StartsAt() time.Time {
 	return g.time
 }
 
-func (g *getValuesAtTimeOp) ExtractSamples(in model.Values) (out model.Values) {
+func (g *getValuesAtTimeOp) ExtractSamples(in Values) (out Values) {
 	if len(in) == 0 {
 		return
 	}
@@ -101,7 +99,7 @@ func (g *getValuesAtTimeOp) GreedierThan(op op) (superior bool) {
 // are adjacent to it.
 //
 // An assumption of this is that the provided samples are already sorted!
-func extractValuesAroundTime(t time.Time, in model.Values) (out model.Values) {
+func extractValuesAroundTime(t time.Time, in Values) (out Values) {
 	i := sort.Search(len(in), func(i int) bool {
 		return !in[i].Timestamp.Before(t)
 	})
@@ -152,7 +150,7 @@ func (g *getValuesAtIntervalOp) Through() time.Time {
 	return g.through
 }
 
-func (g *getValuesAtIntervalOp) ExtractSamples(in model.Values) (out model.Values) {
+func (g *getValuesAtIntervalOp) ExtractSamples(in Values) (out Values) {
 	if len(in) == 0 {
 		return
 	}
@@ -212,7 +210,7 @@ func (g *getValuesAlongRangeOp) Through() time.Time {
 	return g.through
 }
 
-func (g *getValuesAlongRangeOp) ExtractSamples(in model.Values) (out model.Values) {
+func (g *getValuesAlongRangeOp) ExtractSamples(in Values) (out Values) {
 	if len(in) == 0 {
 		return
 	}

storage/metric/operation_test.go

@@ -18,7 +18,6 @@ import (
 	"testing"
 	"time"
 
-	"github.com/prometheus/prometheus/model"
 	"github.com/prometheus/prometheus/utility/test"
 )
 
@@ -1203,8 +1202,8 @@ func BenchmarkOptimize(b *testing.B) {
 func TestGetValuesAtTimeOp(t *testing.T) {
 	var scenarios = []struct {
 		op  getValuesAtTimeOp
-		in  model.Values
-		out model.Values
+		in  Values
+		out Values
 	}{
 		// No values.
 		{
@@ -1217,13 +1216,13 @@ func TestGetValuesAtTimeOp(t *testing.T) {
 			op: getValuesAtTimeOp{
 				time: testInstant,
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1235,13 +1234,13 @@ func TestGetValuesAtTimeOp(t *testing.T) {
 			op: getValuesAtTimeOp{
 				time: testInstant.Add(1 * time.Minute),
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1253,13 +1252,13 @@ func TestGetValuesAtTimeOp(t *testing.T) {
 			op: getValuesAtTimeOp{
 				time: testInstant.Add(2 * time.Minute),
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1271,7 +1270,7 @@ func TestGetValuesAtTimeOp(t *testing.T) {
 			op: getValuesAtTimeOp{
 				time: testInstant,
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1281,7 +1280,7 @@ func TestGetValuesAtTimeOp(t *testing.T) {
 					Value:     1,
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1293,7 +1292,7 @@ func TestGetValuesAtTimeOp(t *testing.T) {
 			op: getValuesAtTimeOp{
 				time: testInstant.Add(1 * time.Minute),
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1303,7 +1302,7 @@ func TestGetValuesAtTimeOp(t *testing.T) {
 					Value:     1,
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1315,7 +1314,7 @@ func TestGetValuesAtTimeOp(t *testing.T) {
 			op: getValuesAtTimeOp{
 				time: testInstant.Add(90 * time.Second),
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1325,7 +1324,7 @@ func TestGetValuesAtTimeOp(t *testing.T) {
 					Value:     1,
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1341,7 +1340,7 @@ func TestGetValuesAtTimeOp(t *testing.T) {
 			op: getValuesAtTimeOp{
 				time: testInstant.Add(2 * time.Minute),
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1351,7 +1350,7 @@ func TestGetValuesAtTimeOp(t *testing.T) {
 					Value:     1,
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1367,7 +1366,7 @@ func TestGetValuesAtTimeOp(t *testing.T) {
 			op: getValuesAtTimeOp{
 				time: testInstant.Add(3 * time.Minute),
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1377,7 +1376,7 @@ func TestGetValuesAtTimeOp(t *testing.T) {
 					Value:     1,
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Timestamp: testInstant.Add(2 * time.Minute),
 					Value:     1,
@@ -1385,6 +1384,7 @@ func TestGetValuesAtTimeOp(t *testing.T) {
 			},
 		},
 	}
+
 	for i, scenario := range scenarios {
 		actual := scenario.op.ExtractSamples(scenario.in)
 		if len(actual) != len(scenario.out) {
@@ -1392,7 +1392,7 @@ func TestGetValuesAtTimeOp(t *testing.T) {
 			t.Fatalf("%d. expected length %d, got %d", i, len(scenario.out), len(actual))
 		}
 		for j, out := range scenario.out {
-			if out != actual[j] {
+			if !out.Equal(actual[j]) {
 				t.Fatalf("%d. expected output %v, got %v", i, scenario.out, actual)
 			}
 		}
@@ -1402,8 +1402,8 @@ func TestGetValuesAtTimeOp(t *testing.T) {
 func TestGetValuesAtIntervalOp(t *testing.T) {
 	var scenarios = []struct {
 		op  getValuesAtIntervalOp
-		in  model.Values
-		out model.Values
+		in  Values
+		out Values
 	}{
 		// No values.
 		{
@@ -1420,7 +1420,7 @@ func TestGetValuesAtIntervalOp(t *testing.T) {
 				through:  testInstant.Add(1 * time.Minute),
 				interval: 30 * time.Second,
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant.Add(2 * time.Minute),
 					Value:     1,
@@ -1430,7 +1430,7 @@ func TestGetValuesAtIntervalOp(t *testing.T) {
 					Value:     1,
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Timestamp: testInstant.Add(2 * time.Minute),
 					Value:     1,
@@ -1444,7 +1444,7 @@ func TestGetValuesAtIntervalOp(t *testing.T) {
 				through:  testInstant.Add(2 * time.Minute),
 				interval: 30 * time.Second,
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1454,7 +1454,7 @@ func TestGetValuesAtIntervalOp(t *testing.T) {
 					Value:     1,
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1472,7 +1472,7 @@ func TestGetValuesAtIntervalOp(t *testing.T) {
 				through:  testInstant.Add(2 * time.Minute),
 				interval: 30 * time.Second,
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant,
 					Value:     1,
@@ -1486,7 +1486,7 @@ func TestGetValuesAtIntervalOp(t *testing.T) {
 					Value:     1,
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1504,7 +1504,7 @@ func TestGetValuesAtIntervalOp(t *testing.T) {
 				through:  testInstant.Add(3 * time.Minute),
 				interval: 30 * time.Second,
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1514,7 +1514,7 @@ func TestGetValuesAtIntervalOp(t *testing.T) {
 					Value:     1,
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1532,7 +1532,7 @@ func TestGetValuesAtIntervalOp(t *testing.T) {
 				through:  testInstant.Add(4 * time.Minute),
 				interval: 30 * time.Second,
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant,
 					Value:     1,
@@ -1550,7 +1550,7 @@ func TestGetValuesAtIntervalOp(t *testing.T) {
 					Value:     1,
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Timestamp: testInstant.Add(2 * time.Minute),
 					Value:     1,
@@ -1568,7 +1568,7 @@ func TestGetValuesAtIntervalOp(t *testing.T) {
 				through:  testInstant.Add(3 * time.Minute),
 				interval: 30 * time.Second,
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant,
 					Value:     1,
@@ -1578,7 +1578,7 @@ func TestGetValuesAtIntervalOp(t *testing.T) {
 					Value:     1,
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1596,7 +1596,7 @@ func TestGetValuesAtIntervalOp(t *testing.T) {
 				through:  testInstant.Add(4 * time.Minute),
 				interval: 3 * time.Minute,
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant,
 					Value:     1,
@@ -1614,7 +1614,7 @@ func TestGetValuesAtIntervalOp(t *testing.T) {
 					Value:     1,
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Timestamp: testInstant,
 					Value:     1,
@@ -1647,7 +1647,7 @@ func TestGetValuesAtIntervalOp(t *testing.T) {
 		}
 
 		for j, out := range scenario.out {
-			if out != actual[j] {
+			if !out.Equal(actual[j]) {
 				t.Fatalf("%d. expected output %v, got %v", i, scenario.out, actual)
 			}
 		}
@@ -1657,8 +1657,8 @@ func TestGetValuesAtIntervalOp(t *testing.T) {
 func TestGetValuesAlongRangeOp(t *testing.T) {
 	var scenarios = []struct {
 		op  getValuesAlongRangeOp
-		in  model.Values
-		out model.Values
+		in  Values
+		out Values
 	}{
 		// No values.
 		{
@@ -1673,7 +1673,7 @@ func TestGetValuesAlongRangeOp(t *testing.T) {
 				from:    testInstant,
 				through: testInstant.Add(1 * time.Minute),
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant.Add(2 * time.Minute),
 					Value:     1,
@@ -1683,7 +1683,7 @@ func TestGetValuesAlongRangeOp(t *testing.T) {
 					Value:     1,
 				},
 			},
-			out: model.Values{},
+			out: Values{},
 		},
 		// Operator range starts before first value, ends within available values.
 		{
@@ -1691,7 +1691,7 @@ func TestGetValuesAlongRangeOp(t *testing.T) {
 				from:    testInstant,
 				through: testInstant.Add(2 * time.Minute),
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1701,7 +1701,7 @@ func TestGetValuesAlongRangeOp(t *testing.T) {
 					Value:     1,
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1714,7 +1714,7 @@ func TestGetValuesAlongRangeOp(t *testing.T) {
 				from:    testInstant.Add(1 * time.Minute),
 				through: testInstant.Add(2 * time.Minute),
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant,
 					Value:     1,
@@ -1728,7 +1728,7 @@ func TestGetValuesAlongRangeOp(t *testing.T) {
 					Value:     1,
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1741,7 +1741,7 @@ func TestGetValuesAlongRangeOp(t *testing.T) {
 				from:    testInstant,
 				through: testInstant.Add(3 * time.Minute),
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1751,7 +1751,7 @@ func TestGetValuesAlongRangeOp(t *testing.T) {
 					Value:     1,
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Timestamp: testInstant.Add(1 * time.Minute),
 					Value:     1,
@@ -1768,7 +1768,7 @@ func TestGetValuesAlongRangeOp(t *testing.T) {
 				from:    testInstant.Add(2 * time.Minute),
 				through: testInstant.Add(4 * time.Minute),
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant,
 					Value:     1,
@@ -1786,7 +1786,7 @@ func TestGetValuesAlongRangeOp(t *testing.T) {
 					Value:     1,
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Timestamp: testInstant.Add(2 * time.Minute),
 					Value:     1,
@@ -1803,7 +1803,7 @@ func TestGetValuesAlongRangeOp(t *testing.T) {
 				from:    testInstant.Add(2 * time.Minute),
 				through: testInstant.Add(3 * time.Minute),
 			},
-			in: model.Values{
+			in: Values{
 				{
 					Timestamp: testInstant,
 					Value:     1,
@@ -1813,7 +1813,7 @@ func TestGetValuesAlongRangeOp(t *testing.T) {
 					Value:     1,
 				},
 			},
-			out: model.Values{},
+			out: Values{},
 		},
 	}
 	for i, scenario := range scenarios {
@@ -1823,7 +1823,7 @@ func TestGetValuesAlongRangeOp(t *testing.T) {
 			t.Fatalf("%d. expected length %d, got %d", i, len(scenario.out), len(actual))
 		}
 		for j, out := range scenario.out {
-			if out != actual[j] {
+			if !out.Equal(actual[j]) {
 				t.Fatalf("%d. expected output %v, got %v", i, scenario.out, actual)
 			}
 		}

storage/metric/processor.go

@@ -19,9 +19,10 @@ import (
 
 	"code.google.com/p/goprotobuf/proto"
 
+	clientmodel "github.com/prometheus/client_golang/model"
+
 	dto "github.com/prometheus/prometheus/model/generated"
 
-	"github.com/prometheus/prometheus/model"
 	"github.com/prometheus/prometheus/storage/raw"
 	"github.com/prometheus/prometheus/storage/raw/leveldb"
 )
@@ -35,7 +36,7 @@ type Processor interface {
 	Name() string
 	// Signature emits a byte signature for this process for the purpose of
 	// remarking how far along it has been applied to the database.
-	Signature() (signature []byte, err error)
+	Signature() []byte
 	// Apply runs this processor against the sample set.  sampleIterator expects
 	// to be pre-seeked to the initial starting position.  The processor will
 	// run until up until stopAt has been reached.  It is imperative that the
@@ -43,7 +44,7 @@ type Processor interface {
 	//
 	// Upon completion or error, the last time at which the processor finished
 	// shall be emitted in addition to any errors.
-	Apply(sampleIterator leveldb.Iterator, samplesPersistence raw.Persistence, stopAt time.Time, fingerprint *model.Fingerprint) (lastCurated time.Time, err error)
+	Apply(sampleIterator leveldb.Iterator, samplesPersistence raw.Persistence, stopAt time.Time, fingerprint *clientmodel.Fingerprint) (lastCurated time.Time, err error)
 }
 
 // CompactionProcessor combines sparse values in the database together such
@@ -63,29 +64,30 @@ type CompactionProcessor struct {
 	signature []byte
 }
 
-func (p CompactionProcessor) Name() string {
+func (p *CompactionProcessor) Name() string {
 	return "io.prometheus.CompactionProcessorDefinition"
 }
 
-func (p *CompactionProcessor) Signature() (out []byte, err error) {
+func (p *CompactionProcessor) Signature() []byte {
 	if len(p.signature) == 0 {
-		out, err = proto.Marshal(&dto.CompactionProcessorDefinition{
+		out, err := proto.Marshal(&dto.CompactionProcessorDefinition{
 			MinimumGroupSize: proto.Uint32(uint32(p.MinimumGroupSize)),
 		})
+		if err != nil {
+			panic(err)
+		}
 
 		p.signature = out
 	}
 
-	out = p.signature
-
-	return
+	return p.signature
 }
 
-func (p CompactionProcessor) String() string {
+func (p *CompactionProcessor) String() string {
 	return fmt.Sprintf("compactionProcessor for minimum group size %d", p.MinimumGroupSize)
 }
 
-func (p CompactionProcessor) Apply(sampleIterator leveldb.Iterator, samplesPersistence raw.Persistence, stopAt time.Time, fingerprint *model.Fingerprint) (lastCurated time.Time, err error) {
+func (p *CompactionProcessor) Apply(sampleIterator leveldb.Iterator, samplesPersistence raw.Persistence, stopAt time.Time, fingerprint *clientmodel.Fingerprint) (lastCurated time.Time, err error) {
 	var pendingBatch raw.Batch = nil
 
 	defer func() {
@@ -95,9 +97,9 @@ func (p CompactionProcessor) Apply(sampleIterator leveldb.Iterator, samplesPersi
 	}()
 
 	var pendingMutations = 0
-	var pendingSamples model.Values
-	var sampleKey model.SampleKey
-	var unactedSamples model.Values
+	var pendingSamples Values
+	var sampleKey *SampleKey
+	var unactedSamples Values
 	var lastTouchedTime time.Time
 	var keyDropped bool
 
@@ -151,27 +153,36 @@ func (p CompactionProcessor) Apply(sampleIterator leveldb.Iterator, samplesPersi
 
 		case len(pendingSamples) == 0 && len(unactedSamples) >= p.MinimumGroupSize:
 			lastTouchedTime = unactedSamples[len(unactedSamples)-1].Timestamp
-			unactedSamples = model.Values{}
+			unactedSamples = Values{}
 
 		case len(pendingSamples)+len(unactedSamples) < p.MinimumGroupSize:
 			if !keyDropped {
-				pendingBatch.Drop(sampleKey.ToDTO())
+				k := new(dto.SampleKey)
+				sampleKey.Dump(k)
+				pendingBatch.Drop(k)
+
 				keyDropped = true
 			}
 			pendingSamples = append(pendingSamples, unactedSamples...)
 			lastTouchedTime = unactedSamples[len(unactedSamples)-1].Timestamp
-			unactedSamples = model.Values{}
+			unactedSamples = Values{}
 			pendingMutations++
 
 		// If the number of pending writes equals the target group size
 		case len(pendingSamples) == p.MinimumGroupSize:
+			k := new(dto.SampleKey)
 			newSampleKey := pendingSamples.ToSampleKey(fingerprint)
-			pendingBatch.Put(newSampleKey.ToDTO(), pendingSamples.ToDTO())
+			newSampleKey.Dump(k)
+			b := new(dto.SampleValueSeries)
+			pendingSamples.dump(b)
+			pendingBatch.Put(k, b)
+
 			pendingMutations++
 			lastCurated = newSampleKey.FirstTimestamp.In(time.UTC)
 			if len(unactedSamples) > 0 {
 				if !keyDropped {
-					pendingBatch.Drop(sampleKey.ToDTO())
+					sampleKey.Dump(k)
+					pendingBatch.Drop(k)
 					keyDropped = true
 				}
 
@@ -182,13 +193,15 @@ func (p CompactionProcessor) Apply(sampleIterator leveldb.Iterator, samplesPersi
 				} else {
 					pendingSamples = unactedSamples
 					lastTouchedTime = pendingSamples[len(pendingSamples)-1].Timestamp
-					unactedSamples = model.Values{}
+					unactedSamples = Values{}
 				}
 			}
 
 		case len(pendingSamples)+len(unactedSamples) >= p.MinimumGroupSize:
 			if !keyDropped {
-				pendingBatch.Drop(sampleKey.ToDTO())
+				k := new(dto.SampleKey)
+				sampleKey.Dump(k)
+				pendingBatch.Drop(k)
 				keyDropped = true
 			}
 			remainder := p.MinimumGroupSize - len(pendingSamples)
@@ -207,9 +220,13 @@ func (p CompactionProcessor) Apply(sampleIterator leveldb.Iterator, samplesPersi
 
 	if len(unactedSamples) > 0 || len(pendingSamples) > 0 {
 		pendingSamples = append(pendingSamples, unactedSamples...)
+		k := new(dto.SampleKey)
 		newSampleKey := pendingSamples.ToSampleKey(fingerprint)
-		pendingBatch.Put(newSampleKey.ToDTO(), pendingSamples.ToDTO())
-		pendingSamples = model.Values{}
+		newSampleKey.Dump(k)
+		b := new(dto.SampleValueSeries)
+		pendingSamples.dump(b)
+		pendingBatch.Put(k, b)
+		pendingSamples = Values{}
 		pendingMutations++
 		lastCurated = newSampleKey.FirstTimestamp.In(time.UTC)
 	}
@@ -237,27 +254,29 @@ type DeletionProcessor struct {
 	signature []byte
 }
 
-func (p DeletionProcessor) Name() string {
+func (p *DeletionProcessor) Name() string {
 	return "io.prometheus.DeletionProcessorDefinition"
 }
 
-func (p *DeletionProcessor) Signature() (out []byte, err error) {
+func (p *DeletionProcessor) Signature() []byte {
 	if len(p.signature) == 0 {
-		out, err = proto.Marshal(&dto.DeletionProcessorDefinition{})
+		out, err := proto.Marshal(&dto.DeletionProcessorDefinition{})
+
+		if err != nil {
+			panic(err)
+		}
 
 		p.signature = out
 	}
 
-	out = p.signature
-
-	return
+	return p.signature
 }
 
-func (p DeletionProcessor) String() string {
+func (p *DeletionProcessor) String() string {
 	return "deletionProcessor"
 }
 
-func (p DeletionProcessor) Apply(sampleIterator leveldb.Iterator, samplesPersistence raw.Persistence, stopAt time.Time, fingerprint *model.Fingerprint) (lastCurated time.Time, err error) {
+func (p *DeletionProcessor) Apply(sampleIterator leveldb.Iterator, samplesPersistence raw.Persistence, stopAt time.Time, fingerprint *clientmodel.Fingerprint) (lastCurated time.Time, err error) {
 	var pendingBatch raw.Batch = nil
 
 	defer func() {
@@ -315,20 +334,28 @@ func (p DeletionProcessor) Apply(sampleIterator leveldb.Iterator, samplesPersist
 			pendingBatch = nil
 
 		case !sampleKey.MayContain(stopAt):
-			pendingBatch.Drop(sampleKey.ToDTO())
+			k := &dto.SampleKey{}
+			sampleKey.Dump(k)
+			pendingBatch.Drop(k)
 			lastCurated = sampleKey.LastTimestamp
-			sampleValues = model.Values{}
+			sampleValues = Values{}
 			pendingMutations++
 
 		case sampleKey.MayContain(stopAt):
-			pendingBatch.Drop(sampleKey.ToDTO())
+			k := &dto.SampleKey{}
+			sampleKey.Dump(k)
+			pendingBatch.Drop(k)
 			pendingMutations++
 
 			sampleValues = sampleValues.TruncateBefore(stopAt)
 			if len(sampleValues) > 0 {
+				k := &dto.SampleKey{}
 				sampleKey = sampleValues.ToSampleKey(fingerprint)
+				sampleKey.Dump(k)
+				v := &dto.SampleValueSeries{}
+				sampleValues.dump(v)
 				lastCurated = sampleKey.FirstTimestamp
-				pendingBatch.Put(sampleKey.ToDTO(), sampleValues.ToDTO())
+				pendingBatch.Put(k, v)
 				pendingMutations++
 			} else {
 				lastCurated = sampleKey.LastTimestamp

storage/metric/processor_test.go

@@ -20,10 +20,11 @@ import (
 
 	"code.google.com/p/goprotobuf/proto"
 
+	clientmodel "github.com/prometheus/client_golang/model"
+
 	dto "github.com/prometheus/prometheus/model/generated"
 	fixture "github.com/prometheus/prometheus/storage/raw/leveldb/test"
 
-	"github.com/prometheus/prometheus/model"
 	"github.com/prometheus/prometheus/storage/raw/leveldb"
 )
 
@@ -41,7 +42,7 @@ type watermarkState struct {
 
 type sampleGroup struct {
 	fingerprint string
-	values      model.Values
+	values      Values
 }
 
 type in struct {
@@ -59,41 +60,59 @@ type out struct {
 }
 
 func (c curationState) Get() (key, value proto.Message) {
-	signature, err := c.processor.Signature()
-	if err != nil {
-		panic(err)
-	}
-	key = model.CurationKey{
-		Fingerprint:              model.NewFingerprintFromRowKey(c.fingerprint),
+	signature := c.processor.Signature()
+	fingerprint := &clientmodel.Fingerprint{}
+	fingerprint.LoadFromString(c.fingerprint)
+	keyRaw := curationKey{
+		Fingerprint:              fingerprint,
 		ProcessorMessageRaw:      signature,
 		ProcessorMessageTypeName: c.processor.Name(),
 		IgnoreYoungerThan:        c.ignoreYoungerThan,
-	}.ToDTO()
+	}
 
-	value = model.CurationRemark{
+	k := &dto.CurationKey{}
+	keyRaw.dump(k)
+	key = k
+
+	valueRaw := curationRemark{
 		LastCompletionTimestamp: c.lastCurated,
-	}.ToDTO()
+	}
+	v := &dto.CurationValue{}
+	valueRaw.dump(v)
 
-	return
+	return k, v
 }
 
 func (w watermarkState) Get() (key, value proto.Message) {
-	key = model.NewFingerprintFromRowKey(w.fingerprint).ToDTO()
-	value = model.NewWatermarkFromTime(w.lastAppended).ToMetricHighWatermarkDTO()
-	return
+	fingerprint := &clientmodel.Fingerprint{}
+	fingerprint.LoadFromString(w.fingerprint)
+	k := &dto.Fingerprint{}
+	dumpFingerprint(k, fingerprint)
+	v := &dto.MetricHighWatermark{}
+	rawValue := &watermarks{
+		High: w.lastAppended,
+	}
+	rawValue.dump(v)
+
+	return k, v
 }
 
 func (s sampleGroup) Get() (key, value proto.Message) {
-	key = model.SampleKey{
-		Fingerprint:    model.NewFingerprintFromRowKey(s.fingerprint),
+	fingerprint := &clientmodel.Fingerprint{}
+	fingerprint.LoadFromString(s.fingerprint)
+	keyRaw := SampleKey{
+		Fingerprint:    fingerprint,
 		FirstTimestamp: s.values[0].Timestamp,
 		LastTimestamp:  s.values[len(s.values)-1].Timestamp,
 		SampleCount:    uint32(len(s.values)),
-	}.ToDTO()
+	}
+	k := &dto.SampleKey{}
+	keyRaw.Dump(k)
 
-	value = s.values.ToDTO()
+	v := &dto.SampleValueSeries{}
+	s.values.dump(v)
 
-	return
+	return k, v
 }
 
 func TestCuratorCompactionProcessor(t *testing.T) {
@@ -152,7 +171,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 				sampleGroups: fixture.Pairs{
 					sampleGroup{
 						fingerprint: "0001-A-1-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 90 * time.Minute),
 								Value:     0,
@@ -177,7 +196,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0001-A-1-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 65 * time.Minute),
 								Value:     0.25,
@@ -202,7 +221,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0001-A-1-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 40 * time.Minute),
 								Value:     0.50,
@@ -219,7 +238,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0001-A-1-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 25 * time.Minute),
 								Value:     0.75,
@@ -228,7 +247,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0001-A-1-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 20 * time.Minute),
 								Value:     -2,
@@ -237,7 +256,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0001-A-1-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 15 * time.Minute),
 								Value:     -3,
@@ -247,7 +266,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 1
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 90 * time.Minute),
 								Value:     0,
@@ -257,7 +276,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 1
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 89 * time.Minute),
 								Value:     1,
@@ -267,7 +286,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 1
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 88 * time.Minute),
 								Value:     2,
@@ -277,7 +296,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 1
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 87 * time.Minute),
 								Value:     3,
@@ -287,7 +306,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 1
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 86 * time.Minute),
 								Value:     4,
@@ -297,7 +316,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 2
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 85 * time.Minute),
 								Value:     5,
@@ -307,7 +326,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 2
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 84 * time.Minute),
 								Value:     6,
@@ -317,7 +336,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 2
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 83 * time.Minute),
 								Value:     7,
@@ -327,7 +346,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 2
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 82 * time.Minute),
 								Value:     8,
@@ -337,7 +356,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 2
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 81 * time.Minute),
 								Value:     9,
@@ -347,7 +366,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 3
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 80 * time.Minute),
 								Value:     10,
@@ -357,7 +376,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 3
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 79 * time.Minute),
 								Value:     11,
@@ -367,7 +386,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 3
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 78 * time.Minute),
 								Value:     12,
@@ -377,7 +396,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 3
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 77 * time.Minute),
 								Value:     13,
@@ -387,7 +406,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Blocks 3 and 4 and 5
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								// Block 3
 								Timestamp: testInstant.Add(-1 * 76 * time.Minute),
@@ -428,7 +447,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 5
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 69 * time.Minute),
 								Value:     21,
@@ -438,7 +457,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 5
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 68 * time.Minute),
 								Value:     22,
@@ -448,7 +467,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 5
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 67 * time.Minute),
 								Value:     23,
@@ -458,7 +477,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 5
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 66 * time.Minute),
 								Value:     24,
@@ -468,7 +487,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 6
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 65 * time.Minute),
 								Value:     25,
@@ -478,7 +497,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 6
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 64 * time.Minute),
 								Value:     26,
@@ -488,7 +507,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 6
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 63 * time.Minute),
 								Value:     27,
@@ -498,7 +517,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 6
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 62 * time.Minute),
 								Value:     28,
@@ -508,7 +527,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 6
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 61 * time.Minute),
 								Value:     29,
@@ -518,7 +537,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					sampleGroup{
 						// Moved into Block 7
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 60 * time.Minute),
 								Value:     30,
@@ -560,7 +579,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 				sampleGroups: []sampleGroup{
 					{
 						fingerprint: "0001-A-1-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 90 * time.Minute),
 								Value:     0,
@@ -585,7 +604,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					},
 					{
 						fingerprint: "0001-A-1-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 65 * time.Minute),
 								Value:     0.25,
@@ -610,7 +629,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					},
 					{
 						fingerprint: "0001-A-1-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 40 * time.Minute),
 								Value:     0.50,
@@ -627,7 +646,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					},
 					{
 						fingerprint: "0001-A-1-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 25 * time.Minute),
 								Value:     0.75,
@@ -636,7 +655,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					},
 					{
 						fingerprint: "0001-A-1-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 20 * time.Minute),
 								Value:     -2,
@@ -645,7 +664,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					},
 					{
 						fingerprint: "0001-A-1-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 15 * time.Minute),
 								Value:     -3,
@@ -655,7 +674,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					{
 						// Block 1
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 90 * time.Minute),
 								Value:     0,
@@ -681,7 +700,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					{
 						// Block 2
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 85 * time.Minute),
 								Value:     5,
@@ -707,7 +726,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					{
 						// Block 3
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 80 * time.Minute),
 								Value:     10,
@@ -732,7 +751,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					},
 					{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 75 * time.Minute),
 								Value:     15,
@@ -757,7 +776,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					},
 					{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 70 * time.Minute),
 								Value:     20,
@@ -782,7 +801,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					},
 					{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 65 * time.Minute),
 								Value:     25,
@@ -807,7 +826,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 					},
 					{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 60 * time.Minute),
 								Value:     30,
@@ -888,17 +907,16 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 			if err != nil {
 				t.Fatalf("%d.%d. could not unmarshal: %s", i, j, err)
 			}
+			actualKey := &curationKey{}
+			actualKey.load(curationKeyDto)
+			actualCurationRemark := &curationRemark{}
+			actualCurationRemark.load(curationValueDto)
+			signature := expected.processor.Signature()
 
-			curationKey := model.NewCurationKeyFromDTO(curationKeyDto)
-			actualCurationRemark := model.NewCurationRemarkFromDTO(curationValueDto)
-			signature, err := expected.processor.Signature()
-			if err != nil {
-				t.Fatal(err)
-			}
-
-			actualKey := curationKey
-			expectedKey := model.CurationKey{
-				Fingerprint:              model.NewFingerprintFromRowKey(expected.fingerprint),
+			expectedFingerprint := &clientmodel.Fingerprint{}
+			expectedFingerprint.LoadFromString(expected.fingerprint)
+			expectedKey := &curationKey{
+				Fingerprint:              expectedFingerprint,
 				IgnoreYoungerThan:        expected.ignoreYoungerThan,
 				ProcessorMessageRaw:      signature,
 				ProcessorMessageTypeName: expected.processor.Name(),
@@ -906,7 +924,7 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 			if !actualKey.Equal(expectedKey) {
 				t.Fatalf("%d.%d. expected %s, got %s", i, j, expectedKey, actualKey)
 			}
-			expectedCurationRemark := model.CurationRemark{
+			expectedCurationRemark := curationRemark{
 				LastCompletionTimestamp: expected.lastCurated,
 			}
 			if !actualCurationRemark.Equal(expectedCurationRemark) {
@@ -938,7 +956,9 @@ func TestCuratorCompactionProcessor(t *testing.T) {
 				t.Fatalf("%d.%d. error %s", i, j, err)
 			}
 
-			if !model.NewFingerprintFromRowKey(expected.fingerprint).Equal(sampleKey.Fingerprint) {
+			expectedFingerprint := &clientmodel.Fingerprint{}
+			expectedFingerprint.LoadFromString(expected.fingerprint)
+			if !expectedFingerprint.Equal(sampleKey.Fingerprint) {
 				t.Fatalf("%d.%d. expected fingerprint %s, got %s", i, j, expected.fingerprint, sampleKey.Fingerprint)
 			}
 
@@ -1014,7 +1034,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 				sampleGroups: fixture.Pairs{
 					sampleGroup{
 						fingerprint: "0001-A-1-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 90 * time.Minute),
 								Value:     90,
@@ -1027,7 +1047,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0001-A-1-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 15 * time.Minute),
 								Value:     15,
@@ -1036,7 +1056,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 90 * time.Minute),
 								Value:     0,
@@ -1045,7 +1065,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 89 * time.Minute),
 								Value:     1,
@@ -1054,7 +1074,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 88 * time.Minute),
 								Value:     2,
@@ -1063,7 +1083,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 87 * time.Minute),
 								Value:     3,
@@ -1072,7 +1092,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 86 * time.Minute),
 								Value:     4,
@@ -1081,7 +1101,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 85 * time.Minute),
 								Value:     5,
@@ -1090,7 +1110,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 84 * time.Minute),
 								Value:     6,
@@ -1099,7 +1119,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 83 * time.Minute),
 								Value:     7,
@@ -1108,7 +1128,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 82 * time.Minute),
 								Value:     8,
@@ -1117,7 +1137,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 81 * time.Minute),
 								Value:     9,
@@ -1126,7 +1146,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 80 * time.Minute),
 								Value:     10,
@@ -1135,7 +1155,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 79 * time.Minute),
 								Value:     11,
@@ -1144,7 +1164,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 78 * time.Minute),
 								Value:     12,
@@ -1153,7 +1173,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 77 * time.Minute),
 								Value:     13,
@@ -1162,7 +1182,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 76 * time.Minute),
 								Value:     14,
@@ -1195,7 +1215,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 69 * time.Minute),
 								Value:     21,
@@ -1204,7 +1224,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 68 * time.Minute),
 								Value:     22,
@@ -1213,7 +1233,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 67 * time.Minute),
 								Value:     23,
@@ -1222,7 +1242,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 66 * time.Minute),
 								Value:     24,
@@ -1231,7 +1251,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 65 * time.Minute),
 								Value:     25,
@@ -1240,7 +1260,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 64 * time.Minute),
 								Value:     26,
@@ -1249,7 +1269,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 63 * time.Minute),
 								Value:     27,
@@ -1258,7 +1278,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 62 * time.Minute),
 								Value:     28,
@@ -1267,7 +1287,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 61 * time.Minute),
 								Value:     29,
@@ -1276,7 +1296,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					sampleGroup{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 60 * time.Minute),
 								Value:     30,
@@ -1307,7 +1327,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 				sampleGroups: []sampleGroup{
 					{
 						fingerprint: "0001-A-1-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 30 * time.Minute),
 								Value:     30,
@@ -1316,7 +1336,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					{
 						fingerprint: "0001-A-1-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 15 * time.Minute),
 								Value:     15,
@@ -1325,7 +1345,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 					},
 					{
 						fingerprint: "0002-A-2-Z",
-						values: model.Values{
+						values: Values{
 							{
 								Timestamp: testInstant.Add(-1 * 60 * time.Minute),
 								Value:     30,
@@ -1407,16 +1427,16 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 				t.Fatalf("%d.%d. could not unmarshal: %s", i, j, err)
 			}
 
-			curationKey := model.NewCurationKeyFromDTO(curationKeyDto)
-			actualCurationRemark := model.NewCurationRemarkFromDTO(curationValueDto)
-			signature, err := expected.processor.Signature()
-			if err != nil {
-				t.Fatal(err)
-			}
+			actualKey := &curationKey{}
+			actualKey.load(curationKeyDto)
+			actualCurationRemark := &curationRemark{}
+			actualCurationRemark.load(curationValueDto)
+			signature := expected.processor.Signature()
 
-			actualKey := curationKey
-			expectedKey := model.CurationKey{
-				Fingerprint:              model.NewFingerprintFromRowKey(expected.fingerprint),
+			expectedFingerprint := &clientmodel.Fingerprint{}
+			expectedFingerprint.LoadFromString(expected.fingerprint)
+			expectedKey := &curationKey{
+				Fingerprint:              expectedFingerprint,
 				IgnoreYoungerThan:        expected.ignoreYoungerThan,
 				ProcessorMessageRaw:      signature,
 				ProcessorMessageTypeName: expected.processor.Name(),
@@ -1424,7 +1444,7 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 			if !actualKey.Equal(expectedKey) {
 				t.Fatalf("%d.%d. expected %s, got %s", i, j, expectedKey, actualKey)
 			}
-			expectedCurationRemark := model.CurationRemark{
+			expectedCurationRemark := curationRemark{
 				LastCompletionTimestamp: expected.lastCurated,
 			}
 			if !actualCurationRemark.Equal(expectedCurationRemark) {
@@ -1456,7 +1476,9 @@ func TestCuratorDeletionProcessor(t *testing.T) {
 				t.Fatalf("%d.%d. error %s", i, j, err)
 			}
 
-			if !model.NewFingerprintFromRowKey(expected.fingerprint).Equal(sampleKey.Fingerprint) {
+			expectedFingerprint := &clientmodel.Fingerprint{}
+			expectedFingerprint.LoadFromString(expected.fingerprint)
+			if !expectedFingerprint.Equal(sampleKey.Fingerprint) {
 				t.Fatalf("%d.%d. expected fingerprint %s, got %s", i, j, expected.fingerprint, sampleKey.Fingerprint)
 			}
 

storage/metric/regressions_test.go

@@ -14,38 +14,40 @@
 package metric
 
 import (
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/utility/test"
 	"testing"
 	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	"github.com/prometheus/prometheus/utility/test"
 )
 
 func GetFingerprintsForLabelSetUsesAndForLabelMatchingTests(p MetricPersistence, t test.Tester) {
-	metrics := []model.LabelSet{
-		{model.MetricNameLabel: "request_metrics_latency_equal_tallying_microseconds", "instance": "http://localhost:9090/metrics.json", "percentile": "0.010000"},
-		{model.MetricNameLabel: "requests_metrics_latency_equal_accumulating_microseconds", "instance": "http://localhost:9090/metrics.json", "percentile": "0.010000"},
-		{model.MetricNameLabel: "requests_metrics_latency_logarithmic_accumulating_microseconds", "instance": "http://localhost:9090/metrics.json", "percentile": "0.010000"},
-		{model.MetricNameLabel: "requests_metrics_latency_logarithmic_tallying_microseconds", "instance": "http://localhost:9090/metrics.json", "percentile": "0.010000"},
-		{model.MetricNameLabel: "targets_healthy_scrape_latency_ms", "instance": "http://localhost:9090/metrics.json", "percentile": "0.010000"},
+	metrics := []clientmodel.LabelSet{
+		{clientmodel.MetricNameLabel: "request_metrics_latency_equal_tallying_microseconds", "instance": "http://localhost:9090/metrics.json", "percentile": "0.010000"},
+		{clientmodel.MetricNameLabel: "requests_metrics_latency_equal_accumulating_microseconds", "instance": "http://localhost:9090/metrics.json", "percentile": "0.010000"},
+		{clientmodel.MetricNameLabel: "requests_metrics_latency_logarithmic_accumulating_microseconds", "instance": "http://localhost:9090/metrics.json", "percentile": "0.010000"},
+		{clientmodel.MetricNameLabel: "requests_metrics_latency_logarithmic_tallying_microseconds", "instance": "http://localhost:9090/metrics.json", "percentile": "0.010000"},
+		{clientmodel.MetricNameLabel: "targets_healthy_scrape_latency_ms", "instance": "http://localhost:9090/metrics.json", "percentile": "0.010000"},
 	}
 
 	for _, metric := range metrics {
-		m := model.Metric{}
+		m := clientmodel.Metric{}
 
 		for k, v := range metric {
-			m[model.LabelName(k)] = model.LabelValue(v)
+			m[clientmodel.LabelName(k)] = clientmodel.LabelValue(v)
 		}
 
-		testAppendSample(p, model.Sample{
-			Value:     model.SampleValue(0.0),
+		testAppendSample(p, &clientmodel.Sample{
+			Value:     clientmodel.SampleValue(0.0),
 			Timestamp: time.Now(),
 			Metric:    m,
 		}, t)
 	}
 
-	labelSet := model.LabelSet{
-		model.MetricNameLabel: "targets_healthy_scrape_latency_ms",
-		"percentile":          "0.010000",
+	labelSet := clientmodel.LabelSet{
+		clientmodel.MetricNameLabel: "targets_healthy_scrape_latency_ms",
+		"percentile":                "0.010000",
 	}
 
 	fingerprints, err := p.GetFingerprintsForLabelSet(labelSet)

storage/metric/rule_integration_test.go

@@ -14,10 +14,12 @@
 package metric
 
 import (
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/utility/test"
 	"testing"
 	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	"github.com/prometheus/prometheus/utility/test"
 )
 
 func GetValueAtTimeTests(persistenceMaker func() (MetricPersistence, test.Closer), t test.Tester) {
@@ -26,7 +28,7 @@ func GetValueAtTimeTests(persistenceMaker func() (MetricPersistence, test.Closer
 		month time.Month
 		day   int
 		hour  int
-		value model.SampleValue
+		value clientmodel.SampleValue
 	}
 
 	type input struct {
@@ -36,7 +38,7 @@ func GetValueAtTimeTests(persistenceMaker func() (MetricPersistence, test.Closer
 		hour  int
 	}
 
-	type output []model.SampleValue
+	type output []clientmodel.SampleValue
 
 	type behavior struct {
 		name   string
@@ -320,13 +322,13 @@ func GetValueAtTimeTests(persistenceMaker func() (MetricPersistence, test.Closer
 			defer closer.Close()
 			defer p.Close()
 
-			m := model.Metric{
-				model.MetricNameLabel: "age_in_years",
+			m := clientmodel.Metric{
+				clientmodel.MetricNameLabel: "age_in_years",
 			}
 
 			for _, value := range context.values {
-				testAppendSample(p, model.Sample{
-					Value:     model.SampleValue(value.value),
+				testAppendSample(p, &clientmodel.Sample{
+					Value:     clientmodel.SampleValue(value.value),
 					Timestamp: time.Date(value.year, value.month, value.day, value.hour, 0, 0, 0, time.UTC),
 					Metric:    m,
 				}, t)
@@ -335,8 +337,9 @@ func GetValueAtTimeTests(persistenceMaker func() (MetricPersistence, test.Closer
 			for j, behavior := range context.behaviors {
 				input := behavior.input
 				time := time.Date(input.year, input.month, input.day, input.hour, 0, 0, 0, time.UTC)
-
-				actual := p.GetValueAtTime(model.NewFingerprintFromMetric(m), time)
+				fingerprint := &clientmodel.Fingerprint{}
+				fingerprint.LoadFromMetric(m)
+				actual := p.GetValueAtTime(fingerprint, time)
 
 				if len(behavior.output) != len(actual) {
 					t.Fatalf("%d.%d(%s.%s). Expected %d samples but got: %v\n", i, j, context.name, behavior.name, len(behavior.output), actual)
@@ -358,7 +361,7 @@ func GetRangeValuesTests(persistenceMaker func() (MetricPersistence, test.Closer
 		month time.Month
 		day   int
 		hour  int
-		value model.SampleValue
+		value clientmodel.SampleValue
 	}
 
 	type input struct {
@@ -377,7 +380,7 @@ func GetRangeValuesTests(persistenceMaker func() (MetricPersistence, test.Closer
 		month time.Month
 		day   int
 		hour  int
-		value model.SampleValue
+		value clientmodel.SampleValue
 	}
 
 	type behavior struct {
@@ -811,13 +814,13 @@ func GetRangeValuesTests(persistenceMaker func() (MetricPersistence, test.Closer
 			defer closer.Close()
 			defer p.Close()
 
-			m := model.Metric{
-				model.MetricNameLabel: "age_in_years",
+			m := clientmodel.Metric{
+				clientmodel.MetricNameLabel: "age_in_years",
 			}
 
 			for _, value := range context.values {
-				testAppendSample(p, model.Sample{
-					Value:     model.SampleValue(value.value),
+				testAppendSample(p, &clientmodel.Sample{
+					Value:     clientmodel.SampleValue(value.value),
 					Timestamp: time.Date(value.year, value.month, value.day, value.hour, 0, 0, 0, time.UTC),
 					Metric:    m,
 				}, t)
@@ -827,14 +830,15 @@ func GetRangeValuesTests(persistenceMaker func() (MetricPersistence, test.Closer
 				input := behavior.input
 				open := time.Date(input.openYear, input.openMonth, input.openDay, input.openHour, 0, 0, 0, time.UTC)
 				end := time.Date(input.endYear, input.endMonth, input.endDay, input.endHour, 0, 0, 0, time.UTC)
-				in := model.Interval{
+				in := Interval{
 					OldestInclusive: open,
 					NewestInclusive: end,
 				}
 
-				actualValues := model.Values{}
+				actualValues := Values{}
 				expectedValues := []output{}
-				fp := model.NewFingerprintFromMetric(m)
+				fp := &clientmodel.Fingerprint{}
+				fp.LoadFromMetric(m)
 				if onlyBoundaries {
 					actualValues = p.GetBoundaryValues(fp, in)
 					l := len(behavior.output)
@@ -865,7 +869,7 @@ func GetRangeValuesTests(persistenceMaker func() (MetricPersistence, test.Closer
 					for k, actual := range actualValues {
 						expected := expectedValues[k]
 
-						if actual.Value != model.SampleValue(expected.value) {
+						if actual.Value != clientmodel.SampleValue(expected.value) {
 							t.Fatalf("%d.%d.%d(%s). Expected %v but got: %v\n", i, j, k, behavior.name, expected.value, actual.Value)
 						}
 

storage/metric/sample.go

@@ -0,0 +1,170 @@
+package metric
+
+import (
+	"bytes"
+	"fmt"
+	"sort"
+	"time"
+
+	"code.google.com/p/goprotobuf/proto"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	dto "github.com/prometheus/prometheus/model/generated"
+)
+
+func (s SamplePair) MarshalJSON() ([]byte, error) {
+	return []byte(fmt.Sprintf("{\"Value\": \"%f\", \"Timestamp\": %d}", s.Value, s.Timestamp.Unix())), nil
+}
+
+type SamplePair struct {
+	Value     clientmodel.SampleValue
+	Timestamp time.Time
+}
+
+func (s *SamplePair) Equal(o *SamplePair) bool {
+	if s == o {
+		return true
+	}
+
+	return s.Value.Equal(o.Value) && s.Timestamp.Equal(o.Timestamp)
+}
+
+func (s *SamplePair) dump(d *dto.SampleValueSeries_Value) {
+	d.Reset()
+
+	d.Timestamp = proto.Int64(s.Timestamp.Unix())
+	d.Value = proto.Float64(float64(s.Value))
+
+}
+
+func (s *SamplePair) String() string {
+	return fmt.Sprintf("SamplePair at %s of %s", s.Timestamp, s.Value)
+}
+
+type Values []*SamplePair
+
+func (v Values) Len() int {
+	return len(v)
+}
+
+func (v Values) Less(i, j int) bool {
+	return v[i].Timestamp.Before(v[j].Timestamp)
+}
+
+func (v Values) Swap(i, j int) {
+	v[i], v[j] = v[j], v[i]
+}
+
+func (v Values) Equal(o Values) bool {
+	if len(v) != len(o) {
+		return false
+	}
+
+	for i, expected := range v {
+		if !expected.Equal(o[i]) {
+			return false
+		}
+	}
+
+	return true
+}
+
+// FirstTimeAfter indicates whether the first sample of a set is after a given
+// timestamp.
+func (v Values) FirstTimeAfter(t time.Time) bool {
+	return v[0].Timestamp.After(t)
+}
+
+// LastTimeBefore indicates whether the last sample of a set is before a given
+// timestamp.
+func (v Values) LastTimeBefore(t time.Time) bool {
+	return v[len(v)-1].Timestamp.Before(t)
+}
+
+// InsideInterval indicates whether a given range of sorted values could contain
+// a value for a given time.
+func (v Values) InsideInterval(t time.Time) bool {
+	switch {
+	case v.Len() == 0:
+		return false
+	case t.Before(v[0].Timestamp):
+		return false
+	case !v[v.Len()-1].Timestamp.Before(t):
+		return false
+	default:
+		return true
+	}
+}
+
+// TruncateBefore returns a subslice of the original such that extraneous
+// samples in the collection that occur before the provided time are
+// dropped.  The original slice is not mutated
+func (v Values) TruncateBefore(t time.Time) Values {
+	index := sort.Search(len(v), func(i int) bool {
+		timestamp := v[i].Timestamp
+
+		return !timestamp.Before(t)
+	})
+
+	return v[index:]
+}
+
+func (v Values) dump(d *dto.SampleValueSeries) {
+	d.Reset()
+
+	for _, value := range v {
+		element := &dto.SampleValueSeries_Value{}
+		value.dump(element)
+		d.Value = append(d.Value, element)
+	}
+}
+
+func (v Values) ToSampleKey(f *clientmodel.Fingerprint) *SampleKey {
+	return &SampleKey{
+		Fingerprint:    f,
+		FirstTimestamp: v[0].Timestamp,
+		LastTimestamp:  v[len(v)-1].Timestamp,
+		SampleCount:    uint32(len(v)),
+	}
+}
+
+func (v Values) String() string {
+	buffer := bytes.Buffer{}
+
+	fmt.Fprintf(&buffer, "[")
+	for i, value := range v {
+		fmt.Fprintf(&buffer, "%d. %s", i, value)
+		if i != len(v)-1 {
+			fmt.Fprintf(&buffer, "\n")
+		}
+	}
+	fmt.Fprintf(&buffer, "]")
+
+	return buffer.String()
+}
+
+func NewValuesFromDTO(d *dto.SampleValueSeries) Values {
+	// BUG(matt): Incogruent from the other load/dump API types, but much more
+	// performant.
+	v := make(Values, 0, len(d.Value))
+
+	for _, value := range d.Value {
+		v = append(v, &SamplePair{
+			Timestamp: time.Unix(value.GetTimestamp(), 0).UTC(),
+			Value:     clientmodel.SampleValue(value.GetValue()),
+		})
+	}
+
+	return v
+}
+
+type SampleSet struct {
+	Metric clientmodel.Metric
+	Values Values
+}
+
+type Interval struct {
+	OldestInclusive time.Time
+	NewestInclusive time.Time
+}

storage/metric/samplekey.go

@@ -11,20 +11,25 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package model
+package metric
 
 import (
-	"code.google.com/p/goprotobuf/proto"
 	"fmt"
-	"github.com/prometheus/prometheus/coding/indexable"
-	dto "github.com/prometheus/prometheus/model/generated"
 	"time"
+
+	"code.google.com/p/goprotobuf/proto"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	dto "github.com/prometheus/prometheus/model/generated"
+
+	"github.com/prometheus/prometheus/coding/indexable"
 )
 
 // SampleKey models the business logic around the data-transfer object
 // SampleKey.
 type SampleKey struct {
-	Fingerprint    *Fingerprint
+	Fingerprint    *clientmodel.Fingerprint
 	FirstTimestamp time.Time
 	LastTimestamp  time.Time
 	SampleCount    uint32
@@ -33,7 +38,7 @@ type SampleKey struct {
 // MayContain indicates whether the given SampleKey could potentially contain a
 // value at the provided time.  Even if true is emitted, that does not mean a
 // satisfactory value, in fact, exists.
-func (s SampleKey) MayContain(t time.Time) bool {
+func (s *SampleKey) MayContain(t time.Time) bool {
 	switch {
 	case t.Before(s.FirstTimestamp):
 		return false
@@ -45,40 +50,39 @@ func (s SampleKey) MayContain(t time.Time) bool {
 }
 
 // ToDTO converts this SampleKey into a DTO for use in serialization purposes.
-func (s SampleKey) ToDTO() (out *dto.SampleKey) {
-	out = &dto.SampleKey{
-		Fingerprint:   s.Fingerprint.ToDTO(),
-		Timestamp:     indexable.EncodeTime(s.FirstTimestamp),
-		LastTimestamp: proto.Int64(s.LastTimestamp.Unix()),
-		SampleCount:   proto.Uint32(s.SampleCount),
-	}
+func (s *SampleKey) Dump(d *dto.SampleKey) {
+	d.Reset()
+	fp := &dto.Fingerprint{}
+	dumpFingerprint(fp, s.Fingerprint)
 
-	return
+	d.Fingerprint = fp
+	d.Timestamp = indexable.EncodeTime(s.FirstTimestamp)
+	d.LastTimestamp = proto.Int64(s.LastTimestamp.Unix())
+	d.SampleCount = proto.Uint32(s.SampleCount)
 }
 
 // ToPartialDTO converts this SampleKey into a DTO that is only suitable for
 // database exploration purposes for a given (Fingerprint, First Sample Time)
 // tuple.
-func (s SampleKey) ToPartialDTO(out *dto.SampleKey) {
-	out = &dto.SampleKey{
-		Fingerprint: s.Fingerprint.ToDTO(),
-		Timestamp:   indexable.EncodeTime(s.FirstTimestamp),
-	}
+func (s *SampleKey) FOOdumpPartial(d *dto.SampleKey) {
+	d.Reset()
 
-	return
+	f := &dto.Fingerprint{}
+	dumpFingerprint(f, s.Fingerprint)
+
+	d.Fingerprint = f
+	d.Timestamp = indexable.EncodeTime(s.FirstTimestamp)
 }
 
-func (s SampleKey) String() string {
+func (s *SampleKey) String() string {
 	return fmt.Sprintf("SampleKey for %s at %s to %s with %d values.", s.Fingerprint, s.FirstTimestamp, s.LastTimestamp, s.SampleCount)
 }
 
-// NewSampleKeyFromDTO builds a new SampleKey from a provided data-transfer
-// object.
-func NewSampleKeyFromDTO(dto *dto.SampleKey) SampleKey {
-	return SampleKey{
-		Fingerprint:    NewFingerprintFromDTO(dto.Fingerprint),
-		FirstTimestamp: indexable.DecodeTime(dto.Timestamp),
-		LastTimestamp:  time.Unix(*dto.LastTimestamp, 0).UTC(),
-		SampleCount:    *dto.SampleCount,
-	}
+func (s *SampleKey) Load(d *dto.SampleKey) {
+	f := &clientmodel.Fingerprint{}
+	loadFingerprint(f, d.GetFingerprint())
+	s.Fingerprint = f
+	s.FirstTimestamp = indexable.DecodeTime(d.Timestamp)
+	s.LastTimestamp = time.Unix(d.GetLastTimestamp(), 0).UTC()
+	s.SampleCount = d.GetSampleCount()
 }

storage/metric/scanjob.go

@@ -16,12 +16,13 @@ package metric
 import (
 	"bytes"
 	"fmt"
-	"github.com/prometheus/prometheus/model"
+
+	clientmodel "github.com/prometheus/client_golang/model"
 )
 
 // scanJob models a range of queries.
 type scanJob struct {
-	fingerprint *model.Fingerprint
+	fingerprint *clientmodel.Fingerprint
 	operations  ops
 }
 

storage/metric/stochastic_test.go

@@ -15,22 +15,23 @@ package metric
 
 import (
 	"fmt"
-	"github.com/prometheus/prometheus/coding"
-	"github.com/prometheus/prometheus/coding/indexable"
-	"github.com/prometheus/prometheus/model"
-	dto "github.com/prometheus/prometheus/model/generated"
-	"github.com/prometheus/prometheus/utility/test"
 	"math"
 	"math/rand"
 	"sort"
 	"testing"
 	"testing/quick"
 	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	dto "github.com/prometheus/prometheus/model/generated"
+
+	"github.com/prometheus/prometheus/coding"
+	"github.com/prometheus/prometheus/coding/indexable"
+	"github.com/prometheus/prometheus/utility/test"
 )
 
-const (
-	stochasticMaximumVariance = 8
-)
+const stochasticMaximumVariance = 8
 
 func BasicLifecycleTests(p MetricPersistence, t test.Tester) {
 	if p == nil {
@@ -41,10 +42,10 @@ func BasicLifecycleTests(p MetricPersistence, t test.Tester) {
 
 func ReadEmptyTests(p MetricPersistence, t test.Tester) {
 	hasLabelPair := func(x int) (success bool) {
-		name := model.LabelName(string(x))
-		value := model.LabelValue(string(x))
+		name := clientmodel.LabelName(string(x))
+		value := clientmodel.LabelValue(string(x))
 
-		labelSet := model.LabelSet{
+		labelSet := clientmodel.LabelSet{
 			name: value,
 		}
 
@@ -69,7 +70,7 @@ func ReadEmptyTests(p MetricPersistence, t test.Tester) {
 	}
 
 	hasLabelName := func(x int) (success bool) {
-		labelName := model.LabelName(string(x))
+		labelName := clientmodel.LabelName(string(x))
 
 		fingerprints, err := p.GetFingerprintsForLabelName(labelName)
 		if err != nil {
@@ -94,13 +95,13 @@ func ReadEmptyTests(p MetricPersistence, t test.Tester) {
 
 func AppendSampleAsPureSparseAppendTests(p MetricPersistence, t test.Tester) {
 	appendSample := func(x int) (success bool) {
-		v := model.SampleValue(x)
+		v := clientmodel.SampleValue(x)
 		ts := time.Unix(int64(x), int64(x))
-		labelName := model.LabelName(x)
-		labelValue := model.LabelValue(x)
-		l := model.Metric{labelName: labelValue}
+		labelName := clientmodel.LabelName(x)
+		labelValue := clientmodel.LabelValue(x)
+		l := clientmodel.Metric{labelName: labelValue}
 
-		sample := model.Sample{
+		sample := &clientmodel.Sample{
 			Value:     v,
 			Timestamp: ts,
 			Metric:    l,
@@ -123,13 +124,13 @@ func AppendSampleAsPureSparseAppendTests(p MetricPersistence, t test.Tester) {
 
 func AppendSampleAsSparseAppendWithReadsTests(p MetricPersistence, t test.Tester) {
 	appendSample := func(x int) (success bool) {
-		v := model.SampleValue(x)
+		v := clientmodel.SampleValue(x)
 		ts := time.Unix(int64(x), int64(x))
-		labelName := model.LabelName(x)
-		labelValue := model.LabelValue(x)
-		l := model.Metric{labelName: labelValue}
+		labelName := clientmodel.LabelName(x)
+		labelValue := clientmodel.LabelValue(x)
+		l := clientmodel.Metric{labelName: labelValue}
 
-		sample := model.Sample{
+		sample := &clientmodel.Sample{
 			Value:     v,
 			Timestamp: ts,
 			Metric:    l,
@@ -151,7 +152,7 @@ func AppendSampleAsSparseAppendWithReadsTests(p MetricPersistence, t test.Tester
 			return
 		}
 
-		fingerprints, err = p.GetFingerprintsForLabelSet(model.LabelSet{
+		fingerprints, err = p.GetFingerprintsForLabelSet(clientmodel.LabelSet{
 			labelName: labelValue,
 		})
 		if err != nil {
@@ -173,10 +174,10 @@ func AppendSampleAsSparseAppendWithReadsTests(p MetricPersistence, t test.Tester
 
 func AppendSampleAsPureSingleEntityAppendTests(p MetricPersistence, t test.Tester) {
 	appendSample := func(x int) bool {
-		sample := model.Sample{
-			Value:     model.SampleValue(x),
+		sample := &clientmodel.Sample{
+			Value:     clientmodel.SampleValue(x),
 			Timestamp: time.Unix(int64(x), 0),
-			Metric:    model.Metric{model.MetricNameLabel: "my_metric"},
+			Metric:    clientmodel.Metric{clientmodel.MetricNameLabel: "my_metric"},
 		}
 
 		err := p.AppendSample(sample)
@@ -189,9 +190,11 @@ func AppendSampleAsPureSingleEntityAppendTests(p MetricPersistence, t test.Teste
 	}
 }
 
-func levelDBGetRangeValues(l *LevelDBMetricPersistence, fp *model.Fingerprint, i model.Interval) (samples model.Values, err error) {
+func levelDBGetRangeValues(l *LevelDBMetricPersistence, fp *clientmodel.Fingerprint, i Interval) (samples Values, err error) {
+	fpDto := &dto.Fingerprint{}
+	dumpFingerprint(fpDto, fp)
 	k := &dto.SampleKey{
-		Fingerprint: fp.ToDTO(),
+		Fingerprint: fpDto,
 		Timestamp:   indexable.EncodeTime(i.OldestInclusive),
 	}
 
@@ -258,23 +261,23 @@ func StochasticTests(persistenceMaker func() (MetricPersistence, test.Closer), t
 		metricNewestSample := map[int]int64{}
 
 		for metricIndex := 0; metricIndex < numberOfMetrics; metricIndex++ {
-			sample := model.Sample{
-				Metric: model.Metric{},
+			sample := &clientmodel.Sample{
+				Metric: clientmodel.Metric{},
 			}
 
-			v := model.LabelValue(fmt.Sprintf("metric_index_%d", metricIndex))
-			sample.Metric[model.MetricNameLabel] = v
+			v := clientmodel.LabelValue(fmt.Sprintf("metric_index_%d", metricIndex))
+			sample.Metric[clientmodel.MetricNameLabel] = v
 
 			for sharedLabelIndex := 0; sharedLabelIndex < numberOfSharedLabels; sharedLabelIndex++ {
-				l := model.LabelName(fmt.Sprintf("shared_label_%d", sharedLabelIndex))
-				v := model.LabelValue(fmt.Sprintf("label_%d", sharedLabelIndex))
+				l := clientmodel.LabelName(fmt.Sprintf("shared_label_%d", sharedLabelIndex))
+				v := clientmodel.LabelValue(fmt.Sprintf("label_%d", sharedLabelIndex))
 
 				sample.Metric[l] = v
 			}
 
 			for unsharedLabelIndex := 0; unsharedLabelIndex < numberOfUnsharedLabels; unsharedLabelIndex++ {
-				l := model.LabelName(fmt.Sprintf("metric_index_%d_private_label_%d", metricIndex, unsharedLabelIndex))
-				v := model.LabelValue(fmt.Sprintf("private_label_%d", unsharedLabelIndex))
+				l := clientmodel.LabelName(fmt.Sprintf("metric_index_%d_private_label_%d", metricIndex, unsharedLabelIndex))
+				v := clientmodel.LabelValue(fmt.Sprintf("private_label_%d", unsharedLabelIndex))
 
 				sample.Metric[l] = v
 			}
@@ -316,7 +319,7 @@ func StochasticTests(persistenceMaker func() (MetricPersistence, test.Closer), t
 
 			for sampleIndex := 0; sampleIndex < numberOfSamples; sampleIndex++ {
 				sample.Timestamp = sortedTimestamps[sampleIndex]
-				sample.Value = model.SampleValue(sampleIndex)
+				sample.Value = clientmodel.SampleValue(sampleIndex)
 
 				err := p.AppendSample(sample)
 
@@ -330,8 +333,8 @@ func StochasticTests(persistenceMaker func() (MetricPersistence, test.Closer), t
 			metricNewestSample[metricIndex] = newestSample
 
 			for sharedLabelIndex := 0; sharedLabelIndex < numberOfSharedLabels; sharedLabelIndex++ {
-				labelPair := model.LabelSet{
-					model.LabelName(fmt.Sprintf("shared_label_%d", sharedLabelIndex)): model.LabelValue(fmt.Sprintf("label_%d", sharedLabelIndex)),
+				labelPair := clientmodel.LabelSet{
+					clientmodel.LabelName(fmt.Sprintf("shared_label_%d", sharedLabelIndex)): clientmodel.LabelValue(fmt.Sprintf("label_%d", sharedLabelIndex)),
 				}
 
 				fingerprints, err := p.GetFingerprintsForLabelSet(labelPair)
@@ -344,7 +347,7 @@ func StochasticTests(persistenceMaker func() (MetricPersistence, test.Closer), t
 					return
 				}
 
-				labelName := model.LabelName(fmt.Sprintf("shared_label_%d", sharedLabelIndex))
+				labelName := clientmodel.LabelName(fmt.Sprintf("shared_label_%d", sharedLabelIndex))
 				fingerprints, err = p.GetFingerprintsForLabelName(labelName)
 				if err != nil {
 					t.Error(err)
@@ -358,7 +361,7 @@ func StochasticTests(persistenceMaker func() (MetricPersistence, test.Closer), t
 		}
 
 		for sharedIndex := 0; sharedIndex < numberOfSharedLabels; sharedIndex++ {
-			labelName := model.LabelName(fmt.Sprintf("shared_label_%d", sharedIndex))
+			labelName := clientmodel.LabelName(fmt.Sprintf("shared_label_%d", sharedIndex))
 			fingerprints, err := p.GetFingerprintsForLabelName(labelName)
 			if err != nil {
 				t.Error(err)
@@ -373,9 +376,9 @@ func StochasticTests(persistenceMaker func() (MetricPersistence, test.Closer), t
 
 		for metricIndex := 0; metricIndex < numberOfMetrics; metricIndex++ {
 			for unsharedLabelIndex := 0; unsharedLabelIndex < numberOfUnsharedLabels; unsharedLabelIndex++ {
-				labelName := model.LabelName(fmt.Sprintf("metric_index_%d_private_label_%d", metricIndex, unsharedLabelIndex))
-				labelValue := model.LabelValue(fmt.Sprintf("private_label_%d", unsharedLabelIndex))
-				labelSet := model.LabelSet{
+				labelName := clientmodel.LabelName(fmt.Sprintf("metric_index_%d_private_label_%d", metricIndex, unsharedLabelIndex))
+				labelValue := clientmodel.LabelValue(fmt.Sprintf("private_label_%d", unsharedLabelIndex))
+				labelSet := clientmodel.LabelSet{
 					labelName: labelValue,
 				}
 
@@ -400,19 +403,19 @@ func StochasticTests(persistenceMaker func() (MetricPersistence, test.Closer), t
 				}
 			}
 
-			metric := model.Metric{}
-			metric[model.MetricNameLabel] = model.LabelValue(fmt.Sprintf("metric_index_%d", metricIndex))
+			metric := clientmodel.Metric{}
+			metric[clientmodel.MetricNameLabel] = clientmodel.LabelValue(fmt.Sprintf("metric_index_%d", metricIndex))
 
 			for i := 0; i < numberOfSharedLabels; i++ {
-				l := model.LabelName(fmt.Sprintf("shared_label_%d", i))
-				v := model.LabelValue(fmt.Sprintf("label_%d", i))
+				l := clientmodel.LabelName(fmt.Sprintf("shared_label_%d", i))
+				v := clientmodel.LabelValue(fmt.Sprintf("label_%d", i))
 
 				metric[l] = v
 			}
 
 			for i := 0; i < numberOfUnsharedLabels; i++ {
-				l := model.LabelName(fmt.Sprintf("metric_index_%d_private_label_%d", metricIndex, i))
-				v := model.LabelValue(fmt.Sprintf("private_label_%d", i))
+				l := clientmodel.LabelName(fmt.Sprintf("metric_index_%d_private_label_%d", metricIndex, i))
+				v := clientmodel.LabelValue(fmt.Sprintf("private_label_%d", i))
 
 				metric[l] = v
 			}
@@ -461,13 +464,14 @@ func StochasticTests(persistenceMaker func() (MetricPersistence, test.Closer), t
 					begin, end = second, first
 				}
 
-				interval := model.Interval{
+				interval := Interval{
 					OldestInclusive: time.Unix(begin, 0),
 					NewestInclusive: time.Unix(end, 0),
 				}
 
-				samples := model.Values{}
-				fp := model.NewFingerprintFromMetric(metric)
+				samples := Values{}
+				fp := &clientmodel.Fingerprint{}
+				fp.LoadFromMetric(metric)
 				switch persistence := p.(type) {
 				case *LevelDBMetricPersistence:
 					var err error

storage/metric/tiered.go

@@ -17,19 +17,20 @@ import (
 	"fmt"
 	"log"
 	"sort"
+	"sync"
 	"time"
 
 	dto "github.com/prometheus/prometheus/model/generated"
 
+	clientmodel "github.com/prometheus/client_golang/model"
+
 	"github.com/prometheus/prometheus/coding"
 	"github.com/prometheus/prometheus/coding/indexable"
-	"github.com/prometheus/prometheus/model"
 	"github.com/prometheus/prometheus/stats"
 	"github.com/prometheus/prometheus/storage/raw/leveldb"
-	"sync"
 )
 
-type chunk model.Values
+type chunk Values
 
 // TruncateBefore returns a subslice of the original such that extraneous
 // samples in the collection that occur before the provided time are
@@ -78,7 +79,7 @@ type TieredStorage struct {
 	// BUG(matt): This introduces a Law of Demeter violation.  Ugh.
 	DiskStorage *LevelDBMetricPersistence
 
-	appendToDiskQueue chan model.Samples
+	appendToDiskQueue chan clientmodel.Samples
 
 	memoryArena         *memorySeriesStorage
 	memoryTTL           time.Duration
@@ -120,7 +121,7 @@ func NewTieredStorage(appendToDiskQueueDepth, viewQueueDepth uint, flushMemoryIn
 	memOptions := MemorySeriesOptions{WatermarkCache: wmCache}
 
 	s := &TieredStorage{
-		appendToDiskQueue:   make(chan model.Samples, appendToDiskQueueDepth),
+		appendToDiskQueue:   make(chan clientmodel.Samples, appendToDiskQueueDepth),
 		DiskStorage:         diskStorage,
 		draining:            make(chan chan<- bool),
 		flushMemoryInterval: flushMemoryInterval,
@@ -145,7 +146,7 @@ func NewTieredStorage(appendToDiskQueueDepth, viewQueueDepth uint, flushMemoryIn
 }
 
 // Enqueues Samples for storage.
-func (t *TieredStorage) AppendSamples(samples model.Samples) (err error) {
+func (t *TieredStorage) AppendSamples(samples clientmodel.Samples) (err error) {
 	t.mu.RLock()
 	defer t.mu.RUnlock()
 	if t.state != tieredStorageServing {
@@ -170,6 +171,8 @@ func (t *TieredStorage) drain(drained chan<- bool) {
 		panic("Illegal State: Supplemental drain requested.")
 	}
 
+	t.state = tieredStorageDraining
+
 	log.Println("Triggering drain...")
 	t.draining <- (drained)
 }
@@ -269,7 +272,7 @@ func (t *TieredStorage) flushMemory(ttl time.Duration) {
 
 	queueLength := len(t.appendToDiskQueue)
 	if queueLength > 0 {
-		samples := model.Samples{}
+		samples := clientmodel.Samples{}
 		for i := 0; i < queueLength; i++ {
 			chunk := <-t.appendToDiskQueue
 			samples = append(samples, chunk...)
@@ -286,6 +289,10 @@ func (t *TieredStorage) Close() {
 	t.mu.Lock()
 	defer t.mu.Unlock()
 
+	t.close()
+}
+
+func (t *TieredStorage) close() {
 	if t.state == tieredStorageStopping {
 		panic("Illegal State: Attempted to restop TieredStorage.")
 	}
@@ -305,7 +312,7 @@ func (t *TieredStorage) Close() {
 	t.state = tieredStorageStopping
 }
 
-func (t *TieredStorage) seriesTooOld(f *model.Fingerprint, i time.Time) (bool, error) {
+func (t *TieredStorage) seriesTooOld(f *clientmodel.Fingerprint, i time.Time) (bool, error) {
 	// BUG(julius): Make this configurable by query layer.
 	i = i.Add(-stalenessLimit)
 
@@ -315,21 +322,23 @@ func (t *TieredStorage) seriesTooOld(f *model.Fingerprint, i time.Time) (bool, e
 			samples := t.memoryArena.CloneSamples(f)
 			if len(samples) > 0 {
 				newest := samples[len(samples)-1].Timestamp
-				t.wmCache.Set(f, &Watermarks{High: newest})
+				t.wmCache.Set(f, &watermarks{High: newest})
 
 				return newest.Before(i), nil
 			}
 		}
 
 		value := &dto.MetricHighWatermark{}
-		diskHit, err := t.DiskStorage.MetricHighWatermarks.Get(f.ToDTO(), value)
+		k := &dto.Fingerprint{}
+		dumpFingerprint(k, f)
+		diskHit, err := t.DiskStorage.MetricHighWatermarks.Get(k, value)
 		if err != nil {
 			return false, err
 		}
 
 		if diskHit {
 			wmTime := time.Unix(*value.Timestamp, 0).UTC()
-			t.wmCache.Set(f, &Watermarks{High: wmTime})
+			t.wmCache.Set(f, &watermarks{High: wmTime})
 
 			return wmTime.Before(i), nil
 		}
@@ -454,7 +463,7 @@ func (t *TieredStorage) renderView(viewJob viewJob) {
 			}
 
 			// For each op, extract all needed data from the current chunk.
-			out := model.Values{}
+			out := Values{}
 			for _, op := range standingOps {
 				if op.CurrentTime().After(targetTime) {
 					break
@@ -463,7 +472,7 @@ func (t *TieredStorage) renderView(viewJob viewJob) {
 				currentChunk = currentChunk.TruncateBefore(*(op.CurrentTime()))
 
 				for op.CurrentTime() != nil && !op.CurrentTime().After(targetTime) {
-					out = op.ExtractSamples(model.Values(currentChunk))
+					out = op.ExtractSamples(Values(currentChunk))
 
 					// Append the extracted samples to the materialized view.
 					view.appendSamples(scanJob.fingerprint, out)
@@ -500,14 +509,15 @@ func (t *TieredStorage) renderView(viewJob viewJob) {
 	return
 }
 
-func (t *TieredStorage) loadChunkAroundTime(iterator leveldb.Iterator, frontier *seriesFrontier, fingerprint *model.Fingerprint, ts time.Time) (chunk model.Values) {
-	var (
-		targetKey = &dto.SampleKey{
-			Fingerprint: fingerprint.ToDTO(),
-		}
-		foundKey    model.SampleKey
-		foundValues model.Values
-	)
+func (t *TieredStorage) loadChunkAroundTime(iterator leveldb.Iterator, frontier *seriesFrontier, fingerprint *clientmodel.Fingerprint, ts time.Time) (chunk Values) {
+
+	fd := &dto.Fingerprint{}
+	dumpFingerprint(fd, fingerprint)
+	targetKey := &dto.SampleKey{
+		Fingerprint: fd,
+	}
+	var foundKey *SampleKey
+	var foundValues Values
 
 	// Limit the target key to be within the series' keyspace.
 	if ts.After(frontier.lastSupertime) {
@@ -577,7 +587,7 @@ func (t *TieredStorage) loadChunkAroundTime(iterator leveldb.Iterator, frontier
 }
 
 // Get all label values that are associated with the provided label name.
-func (t *TieredStorage) GetAllValuesForLabel(labelName model.LabelName) (model.LabelValues, error) {
+func (t *TieredStorage) GetAllValuesForLabel(labelName clientmodel.LabelName) (clientmodel.LabelValues, error) {
 	t.mu.RLock()
 	defer t.mu.RUnlock()
 
@@ -594,8 +604,8 @@ func (t *TieredStorage) GetAllValuesForLabel(labelName model.LabelName) (model.L
 		return nil, err
 	}
 
-	valueSet := map[model.LabelValue]bool{}
-	values := model.LabelValues{}
+	valueSet := map[clientmodel.LabelValue]bool{}
+	values := clientmodel.LabelValues{}
 	for _, value := range append(diskValues, memoryValues...) {
 		if !valueSet[value] {
 			values = append(values, value)
@@ -608,7 +618,7 @@ func (t *TieredStorage) GetAllValuesForLabel(labelName model.LabelName) (model.L
 
 // Get all of the metric fingerprints that are associated with the provided
 // label set.
-func (t *TieredStorage) GetFingerprintsForLabelSet(labelSet model.LabelSet) (model.Fingerprints, error) {
+func (t *TieredStorage) GetFingerprintsForLabelSet(labelSet clientmodel.LabelSet) (clientmodel.Fingerprints, error) {
 	t.mu.RLock()
 	defer t.mu.RUnlock()
 
@@ -624,11 +634,11 @@ func (t *TieredStorage) GetFingerprintsForLabelSet(labelSet model.LabelSet) (mod
 	if err != nil {
 		return nil, err
 	}
-	fingerprintSet := map[model.Fingerprint]bool{}
+	fingerprintSet := map[clientmodel.Fingerprint]bool{}
 	for _, fingerprint := range append(memFingerprints, diskFingerprints...) {
 		fingerprintSet[*fingerprint] = true
 	}
-	fingerprints := model.Fingerprints{}
+	fingerprints := clientmodel.Fingerprints{}
 	for fingerprint := range fingerprintSet {
 		fpCopy := fingerprint
 		fingerprints = append(fingerprints, &fpCopy)
@@ -638,7 +648,7 @@ func (t *TieredStorage) GetFingerprintsForLabelSet(labelSet model.LabelSet) (mod
 }
 
 // Get the metric associated with the provided fingerprint.
-func (t *TieredStorage) GetMetricForFingerprint(f *model.Fingerprint) (model.Metric, error) {
+func (t *TieredStorage) GetMetricForFingerprint(f *clientmodel.Fingerprint) (clientmodel.Metric, error) {
 	t.mu.RLock()
 	defer t.mu.RUnlock()
 

storage/metric/tiered_test.go

@@ -14,19 +14,21 @@
 package metric
 
 import (
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/stats"
-	"github.com/prometheus/prometheus/utility/test"
 	"sort"
 	"testing"
 	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	"github.com/prometheus/prometheus/stats"
+	"github.com/prometheus/prometheus/utility/test"
 )
 
-func buildSamples(from, to time.Time, interval time.Duration, m model.Metric) (v []model.Sample) {
-	i := model.SampleValue(0)
+func buildSamples(from, to time.Time, interval time.Duration, m clientmodel.Metric) (v clientmodel.Samples) {
+	i := clientmodel.SampleValue(0)
 
 	for from.Before(to) {
-		v = append(v, model.Sample{
+		v = append(v, &clientmodel.Sample{
 			Metric:    m,
 			Value:     i,
 			Timestamp: from,
@@ -47,16 +49,17 @@ func testMakeView(t test.Tester, flushToDisk bool) {
 	}
 
 	type out struct {
-		atTime     []model.Values
-		atInterval []model.Values
-		alongRange []model.Values
+		atTime     []Values
+		atInterval []Values
+		alongRange []Values
 	}
+	metric := clientmodel.Metric{clientmodel.MetricNameLabel: "request_count"}
+	fingerprint := &clientmodel.Fingerprint{}
+	fingerprint.LoadFromMetric(metric)
 	var (
-		instant     = time.Date(1984, 3, 30, 0, 0, 0, 0, time.Local)
-		metric      = model.Metric{model.MetricNameLabel: "request_count"}
-		fingerprint = *model.NewFingerprintFromMetric(metric)
-		scenarios   = []struct {
-			data []model.Sample
+		instant   = time.Date(1984, 3, 30, 0, 0, 0, 0, time.Local)
+		scenarios = []struct {
+			data clientmodel.Samples
 			in   in
 			out  out
 		}{
@@ -70,12 +73,12 @@ func testMakeView(t test.Tester, flushToDisk bool) {
 					},
 				},
 				out: out{
-					atTime: []model.Values{{}},
+					atTime: []Values{{}},
 				},
 			},
 			// Single sample, query asks for exact sample time.
 			{
-				data: []model.Sample{
+				data: clientmodel.Samples{
 					{
 						Metric:    metric,
 						Value:     0,
@@ -90,7 +93,7 @@ func testMakeView(t test.Tester, flushToDisk bool) {
 					},
 				},
 				out: out{
-					atTime: []model.Values{
+					atTime: []Values{
 						{
 							{
 								Timestamp: instant,
@@ -102,7 +105,7 @@ func testMakeView(t test.Tester, flushToDisk bool) {
 			},
 			// Single sample, query time before the sample.
 			{
-				data: []model.Sample{
+				data: clientmodel.Samples{
 					{
 						Metric:    metric,
 						Value:     0,
@@ -122,7 +125,7 @@ func testMakeView(t test.Tester, flushToDisk bool) {
 					},
 				},
 				out: out{
-					atTime: []model.Values{
+					atTime: []Values{
 						{
 							{
 								Timestamp: instant.Add(time.Second),
@@ -134,7 +137,7 @@ func testMakeView(t test.Tester, flushToDisk bool) {
 			},
 			// Single sample, query time after the sample.
 			{
-				data: []model.Sample{
+				data: clientmodel.Samples{
 					{
 						Metric:    metric,
 						Value:     0,
@@ -149,7 +152,7 @@ func testMakeView(t test.Tester, flushToDisk bool) {
 					},
 				},
 				out: out{
-					atTime: []model.Values{
+					atTime: []Values{
 						{
 							{
 								Timestamp: instant,
@@ -161,7 +164,7 @@ func testMakeView(t test.Tester, flushToDisk bool) {
 			},
 			// Two samples, query asks for first sample time.
 			{
-				data: []model.Sample{
+				data: clientmodel.Samples{
 					{
 						Metric:    metric,
 						Value:     0,
@@ -181,7 +184,7 @@ func testMakeView(t test.Tester, flushToDisk bool) {
 					},
 				},
 				out: out{
-					atTime: []model.Values{
+					atTime: []Values{
 						{
 							{
 								Timestamp: instant,
@@ -193,7 +196,7 @@ func testMakeView(t test.Tester, flushToDisk bool) {
 			},
 			// Three samples, query asks for second sample time.
 			{
-				data: []model.Sample{
+				data: clientmodel.Samples{
 					{
 						Metric:    metric,
 						Value:     0,
@@ -218,7 +221,7 @@ func testMakeView(t test.Tester, flushToDisk bool) {
 					},
 				},
 				out: out{
-					atTime: []model.Values{
+					atTime: []Values{
 						{
 							{
 								Timestamp: instant.Add(time.Second),
@@ -230,7 +233,7 @@ func testMakeView(t test.Tester, flushToDisk bool) {
 			},
 			// Three samples, query asks for time between first and second samples.
 			{
-				data: []model.Sample{
+				data: clientmodel.Samples{
 					{
 						Metric:    metric,
 						Value:     0,
@@ -255,7 +258,7 @@ func testMakeView(t test.Tester, flushToDisk bool) {
 					},
 				},
 				out: out{
-					atTime: []model.Values{
+					atTime: []Values{
 						{
 							{
 								Timestamp: instant,
@@ -271,7 +274,7 @@ func testMakeView(t test.Tester, flushToDisk bool) {
 			},
 			// Three samples, query asks for time between second and third samples.
 			{
-				data: []model.Sample{
+				data: clientmodel.Samples{
 					{
 						Metric:    metric,
 						Value:     0,
@@ -296,7 +299,7 @@ func testMakeView(t test.Tester, flushToDisk bool) {
 					},
 				},
 				out: out{
-					atTime: []model.Values{
+					atTime: []Values{
 						{
 							{
 								Timestamp: instant.Add(time.Second * 2),
@@ -321,7 +324,7 @@ func testMakeView(t test.Tester, flushToDisk bool) {
 					},
 				},
 				out: out{
-					atTime: []model.Values{
+					atTime: []Values{
 						{
 							{
 								Timestamp: instant.Add(time.Second * time.Duration(*leveldbChunkSize/2)),
@@ -371,7 +374,7 @@ func testMakeView(t test.Tester, flushToDisk bool) {
 		}
 
 		for j, atTime := range scenario.in.atTime {
-			actual := v.GetValueAtTime(&fingerprint, atTime.time)
+			actual := v.GetValueAtTime(fingerprint, atTime.time)
 
 			if len(actual) != len(scenario.out.atTime[j]) {
 				t.Fatalf("%d.%d. expected %d output, got %d", i, j, len(scenario.out.atTime[j]), len(actual))
@@ -475,8 +478,8 @@ func TestGetAllValuesForLabel(t *testing.T) {
 	for i, scenario := range scenarios {
 		tiered, closer := NewTestTieredStorage(t)
 		for j, metric := range scenario.in {
-			sample := model.Sample{
-				Metric: model.Metric{model.MetricNameLabel: model.LabelValue(metric.metricName)},
+			sample := &clientmodel.Sample{
+				Metric: clientmodel.Metric{clientmodel.MetricNameLabel: clientmodel.LabelValue(metric.metricName)},
 			}
 			if metric.appendToMemory {
 				if err := tiered.memoryArena.AppendSample(sample); err != nil {
@@ -489,7 +492,7 @@ func TestGetAllValuesForLabel(t *testing.T) {
 				}
 			}
 		}
-		metricNames, err := tiered.GetAllValuesForLabel(model.MetricNameLabel)
+		metricNames, err := tiered.GetAllValuesForLabel(clientmodel.MetricNameLabel)
 		closer.Close()
 		if err != nil {
 			t.Fatalf("%d. Error getting metric names: %s", i, err)
@@ -510,11 +513,11 @@ func TestGetAllValuesForLabel(t *testing.T) {
 func TestGetFingerprintsForLabelSet(t *testing.T) {
 	tiered, closer := NewTestTieredStorage(t)
 	defer closer.Close()
-	memorySample := model.Sample{
-		Metric: model.Metric{model.MetricNameLabel: "http_requests", "method": "/foo"},
+	memorySample := &clientmodel.Sample{
+		Metric: clientmodel.Metric{clientmodel.MetricNameLabel: "http_requests", "method": "/foo"},
 	}
-	diskSample := model.Sample{
-		Metric: model.Metric{model.MetricNameLabel: "http_requests", "method": "/bar"},
+	diskSample := &clientmodel.Sample{
+		Metric: clientmodel.Metric{clientmodel.MetricNameLabel: "http_requests", "method": "/bar"},
 	}
 	if err := tiered.memoryArena.AppendSample(memorySample); err != nil {
 		t.Fatalf("Failed to add fixture data: %s", err)
@@ -525,33 +528,33 @@ func TestGetFingerprintsForLabelSet(t *testing.T) {
 	tiered.Flush()
 
 	scenarios := []struct {
-		labels  model.LabelSet
+		labels  clientmodel.LabelSet
 		fpCount int
 	}{
 		{
-			labels:  model.LabelSet{},
+			labels:  clientmodel.LabelSet{},
 			fpCount: 0,
 		}, {
-			labels: model.LabelSet{
-				model.MetricNameLabel: "http_requests",
+			labels: clientmodel.LabelSet{
+				clientmodel.MetricNameLabel: "http_requests",
 			},
 			fpCount: 2,
 		}, {
-			labels: model.LabelSet{
-				model.MetricNameLabel: "http_requests",
-				"method":              "/foo",
+			labels: clientmodel.LabelSet{
+				clientmodel.MetricNameLabel: "http_requests",
+				"method":                    "/foo",
 			},
 			fpCount: 1,
 		}, {
-			labels: model.LabelSet{
-				model.MetricNameLabel: "http_requests",
-				"method":              "/bar",
+			labels: clientmodel.LabelSet{
+				clientmodel.MetricNameLabel: "http_requests",
+				"method":                    "/bar",
 			},
 			fpCount: 1,
 		}, {
-			labels: model.LabelSet{
-				model.MetricNameLabel: "http_requests",
-				"method":              "/baz",
+			labels: clientmodel.LabelSet{
+				clientmodel.MetricNameLabel: "http_requests",
+				"method":                    "/baz",
 			},
 			fpCount: 0,
 		},
@@ -570,18 +573,18 @@ func TestGetFingerprintsForLabelSet(t *testing.T) {
 
 func testTruncateBefore(t test.Tester) {
 	type in struct {
-		values model.Values
+		values Values
 		time   time.Time
 	}
 	instant := time.Now()
 	var scenarios = []struct {
 		in  in
-		out model.Values
+		out Values
 	}{
 		{
 			in: in{
 				time: instant,
-				values: model.Values{
+				values: Values{
 					{
 						Value:     0,
 						Timestamp: instant,
@@ -604,7 +607,7 @@ func testTruncateBefore(t test.Tester) {
 					},
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Value:     0,
 					Timestamp: instant,
@@ -630,7 +633,7 @@ func testTruncateBefore(t test.Tester) {
 		{
 			in: in{
 				time: instant.Add(2 * time.Second),
-				values: model.Values{
+				values: Values{
 					{
 						Value:     0,
 						Timestamp: instant,
@@ -653,7 +656,7 @@ func testTruncateBefore(t test.Tester) {
 					},
 				},
 			},
-			out: model.Values{
+			out: Values{
 				{
 					Value:     1,
 					Timestamp: instant.Add(time.Second),
@@ -675,7 +678,7 @@ func testTruncateBefore(t test.Tester) {
 		{
 			in: in{
 				time: instant.Add(5 * time.Second),
-				values: model.Values{
+				values: Values{
 					{
 						Value:     0,
 						Timestamp: instant,
@@ -698,7 +701,7 @@ func testTruncateBefore(t test.Tester) {
 					},
 				},
 			},
-			out: model.Values{
+			out: Values{
 				// Preserve the last value in case it needs to be used for the next set.
 				{
 					Value:     4,

storage/metric/view.go

@@ -17,7 +17,7 @@ import (
 	"sort"
 	"time"
 
-	"github.com/prometheus/prometheus/model"
+	clientmodel "github.com/prometheus/client_golang/model"
 )
 
 var (
@@ -30,56 +30,56 @@ var (
 // Represents the summation of all datastore queries that shall be performed to
 // extract values.  Each operation mutates the state of the builder.
 type ViewRequestBuilder interface {
-	GetMetricAtTime(fingerprint model.Fingerprint, time time.Time)
-	GetMetricAtInterval(fingerprint model.Fingerprint, from, through time.Time, interval time.Duration)
-	GetMetricRange(fingerprint model.Fingerprint, from, through time.Time)
+	GetMetricAtTime(fingerprint *clientmodel.Fingerprint, time time.Time)
+	GetMetricAtInterval(fingerprint *clientmodel.Fingerprint, from, through time.Time, interval time.Duration)
+	GetMetricRange(fingerprint *clientmodel.Fingerprint, from, through time.Time)
 	ScanJobs() scanJobs
 }
 
 // Contains the various unoptimized requests for data.
 type viewRequestBuilder struct {
-	operations map[model.Fingerprint]ops
+	operations map[clientmodel.Fingerprint]ops
 }
 
 // Furnishes a ViewRequestBuilder for remarking what types of queries to perform.
 func NewViewRequestBuilder() viewRequestBuilder {
 	return viewRequestBuilder{
-		operations: make(map[model.Fingerprint]ops),
+		operations: make(map[clientmodel.Fingerprint]ops),
 	}
 }
 
 // Gets for the given Fingerprint either the value at that time if there is an
 // match or the one or two values adjacent thereto.
-func (v viewRequestBuilder) GetMetricAtTime(fingerprint model.Fingerprint, time time.Time) {
-	ops := v.operations[fingerprint]
+func (v viewRequestBuilder) GetMetricAtTime(fingerprint *clientmodel.Fingerprint, time time.Time) {
+	ops := v.operations[*fingerprint]
 	ops = append(ops, &getValuesAtTimeOp{
 		time: time,
 	})
-	v.operations[fingerprint] = ops
+	v.operations[*fingerprint] = ops
 }
 
 // Gets for the given Fingerprint either the value at that interval from From
 // through Through  if there is an match or the one or two values adjacent
 // for each point.
-func (v viewRequestBuilder) GetMetricAtInterval(fingerprint model.Fingerprint, from, through time.Time, interval time.Duration) {
-	ops := v.operations[fingerprint]
+func (v viewRequestBuilder) GetMetricAtInterval(fingerprint *clientmodel.Fingerprint, from, through time.Time, interval time.Duration) {
+	ops := v.operations[*fingerprint]
 	ops = append(ops, &getValuesAtIntervalOp{
 		from:     from,
 		through:  through,
 		interval: interval,
 	})
-	v.operations[fingerprint] = ops
+	v.operations[*fingerprint] = ops
 }
 
 // Gets for the given Fingerprint either the values that occur inclusively from
 // From through Through.
-func (v viewRequestBuilder) GetMetricRange(fingerprint model.Fingerprint, from, through time.Time) {
-	ops := v.operations[fingerprint]
+func (v viewRequestBuilder) GetMetricRange(fingerprint *clientmodel.Fingerprint, from, through time.Time) {
+	ops := v.operations[*fingerprint]
 	ops = append(ops, &getValuesAlongRangeOp{
 		from:    from,
 		through: through,
 	})
-	v.operations[fingerprint] = ops
+	v.operations[*fingerprint] = ops
 }
 
 // Emits the optimized scans that will occur in the data store.  This
@@ -106,7 +106,7 @@ type view struct {
 	*memorySeriesStorage
 }
 
-func (v view) appendSamples(fingerprint *model.Fingerprint, samples model.Values) {
+func (v view) appendSamples(fingerprint *clientmodel.Fingerprint, samples Values) {
 	v.memorySeriesStorage.appendSamplesWithoutIndexing(fingerprint, samples)
 }
 

storage/metric/view_test.go

@@ -14,10 +14,12 @@
 package metric
 
 import (
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/utility/test"
 	"testing"
 	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	"github.com/prometheus/prometheus/utility/test"
 )
 
 func testBuilder(t test.Tester) {
@@ -140,33 +142,36 @@ func testBuilder(t test.Tester) {
 
 	for i, scenario := range scenarios {
 		builder := viewRequestBuilder{
-			operations: map[model.Fingerprint]ops{},
+			operations: map[clientmodel.Fingerprint]ops{},
 		}
 
 		for _, atTime := range scenario.in.atTimes {
-			fingerprint := *model.NewFingerprintFromRowKey(atTime.fingerprint)
+			fingerprint := &clientmodel.Fingerprint{}
+			fingerprint.LoadFromString(atTime.fingerprint)
 			builder.GetMetricAtTime(fingerprint, atTime.time)
 		}
 
 		for _, atInterval := range scenario.in.atIntervals {
-			fingerprint := *model.NewFingerprintFromRowKey(atInterval.fingerprint)
+			fingerprint := &clientmodel.Fingerprint{}
+			fingerprint.LoadFromString(atInterval.fingerprint)
 			builder.GetMetricAtInterval(fingerprint, atInterval.from, atInterval.through, atInterval.interval)
 		}
 
 		for _, atRange := range scenario.in.atRanges {
-			fingerprint := *model.NewFingerprintFromRowKey(atRange.fingerprint)
+			fingerprint := &clientmodel.Fingerprint{}
+			fingerprint.LoadFromString(atRange.fingerprint)
 			builder.GetMetricRange(fingerprint, atRange.from, atRange.through)
 		}
 
 		jobs := builder.ScanJobs()
 
 		if len(scenario.out) != len(jobs) {
-			t.Fatalf("%d. expected job length of %d, got %d\n", i, len(scenario.out), len(jobs))
+			t.Fatalf("%d. expected job length of %d, got %d", i, len(scenario.out), len(jobs))
 		}
 
 		for j, job := range scenario.out {
-			if jobs[j].fingerprint.ToRowKey() != job.fingerprint {
-				t.Fatalf("%d.%d. expected fingerprint %s, got %s\n", i, j, job.fingerprint, jobs[j].fingerprint.ToRowKey())
+			if jobs[j].fingerprint.String() != job.fingerprint {
+				t.Fatalf("%d.%d. expected fingerprint %s, got %s", i, j, job.fingerprint, jobs[j].fingerprint)
 			}
 		}
 	}

storage/metric/watermark.go

@@ -18,10 +18,14 @@ import (
 	"sync"
 	"time"
 
-	"github.com/prometheus/prometheus/model"
+	"code.google.com/p/goprotobuf/proto"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	dto "github.com/prometheus/prometheus/model/generated"
 )
 
-// unsafe.Sizeof(Watermarks{})
+// unsafe.Sizeof(watermarks{})
 const elementSize = 24
 
 type Bytes uint64
@@ -32,32 +36,42 @@ type WatermarkCache struct {
 	mu sync.Mutex
 
 	list  *list.List
-	table map[model.Fingerprint]*list.Element
+	table map[clientmodel.Fingerprint]*list.Element
 
 	size Bytes
 
 	allowance Bytes
 }
 
-type Watermarks struct {
+type watermarks struct {
 	High time.Time
 }
 
+func (w *watermarks) load(d *dto.MetricHighWatermark) {
+	w.High = time.Unix(d.GetTimestamp(), 0).UTC()
+}
+
+func (w *watermarks) dump(d *dto.MetricHighWatermark) {
+	d.Reset()
+
+	d.Timestamp = proto.Int64(w.High.Unix())
+}
+
 type entry struct {
-	fingerprint *model.Fingerprint
-	watermarks  *Watermarks
+	fingerprint *clientmodel.Fingerprint
+	watermarks  *watermarks
 	accessed    time.Time
 }
 
 func NewWatermarkCache(allowance Bytes) *WatermarkCache {
 	return &WatermarkCache{
 		list:      list.New(),
-		table:     map[model.Fingerprint]*list.Element{},
+		table:     map[clientmodel.Fingerprint]*list.Element{},
 		allowance: allowance,
 	}
 }
 
-func (lru *WatermarkCache) Get(f *model.Fingerprint) (v *Watermarks, ok bool) {
+func (lru *WatermarkCache) Get(f *clientmodel.Fingerprint) (v *watermarks, ok bool) {
 	lru.mu.Lock()
 	defer lru.mu.Unlock()
 
@@ -71,7 +85,7 @@ func (lru *WatermarkCache) Get(f *model.Fingerprint) (v *Watermarks, ok bool) {
 	return element.Value.(*entry).watermarks, true
 }
 
-func (lru *WatermarkCache) Set(f *model.Fingerprint, w *Watermarks) {
+func (lru *WatermarkCache) Set(f *clientmodel.Fingerprint, w *watermarks) {
 	lru.mu.Lock()
 	defer lru.mu.Unlock()
 
@@ -82,7 +96,7 @@ func (lru *WatermarkCache) Set(f *model.Fingerprint, w *Watermarks) {
 	}
 }
 
-func (lru *WatermarkCache) SetIfAbsent(f *model.Fingerprint, w *Watermarks) {
+func (lru *WatermarkCache) SetIfAbsent(f *clientmodel.Fingerprint, w *watermarks) {
 	lru.mu.Lock()
 	defer lru.mu.Unlock()
 
@@ -93,7 +107,7 @@ func (lru *WatermarkCache) SetIfAbsent(f *model.Fingerprint, w *Watermarks) {
 	}
 }
 
-func (lru *WatermarkCache) Delete(f *model.Fingerprint) bool {
+func (lru *WatermarkCache) Delete(f *clientmodel.Fingerprint) bool {
 	lru.mu.Lock()
 	defer lru.mu.Unlock()
 
@@ -114,11 +128,11 @@ func (lru *WatermarkCache) Clear() {
 	defer lru.mu.Unlock()
 
 	lru.list.Init()
-	lru.table = map[model.Fingerprint]*list.Element{}
+	lru.table = map[clientmodel.Fingerprint]*list.Element{}
 	lru.size = 0
 }
 
-func (lru *WatermarkCache) updateInplace(e *list.Element, w *Watermarks) {
+func (lru *WatermarkCache) updateInplace(e *list.Element, w *watermarks) {
 	e.Value.(*entry).watermarks = w
 	lru.moveToFront(e)
 	lru.checkCapacity()
@@ -129,7 +143,7 @@ func (lru *WatermarkCache) moveToFront(e *list.Element) {
 	e.Value.(*entry).accessed = time.Now()
 }
 
-func (lru *WatermarkCache) addNew(f *model.Fingerprint, w *Watermarks) {
+func (lru *WatermarkCache) addNew(f *clientmodel.Fingerprint, w *watermarks) {
 	lru.table[*f] = lru.list.PushFront(&entry{
 		fingerprint: f,
 		watermarks:  w,

storage/raw/leveldb/interface_test.go

@@ -14,10 +14,11 @@
 package leveldb
 
 import (
-	"github.com/prometheus/prometheus/storage/raw"
 	"testing"
+
+	"github.com/prometheus/prometheus/storage/raw"
 )
 
 func TestInterfaceAdherence(t *testing.T) {
-	var _ raw.Persistence = &LevelDBPersistence{}
+	var _ raw.Persistence = new(LevelDBPersistence)
 }

tools/dumper/main.go

@@ -30,7 +30,6 @@ import (
 
 	dto "github.com/prometheus/prometheus/model/generated"
 
-	"github.com/prometheus/prometheus/model"
 	"github.com/prometheus/prometheus/storage"
 	"github.com/prometheus/prometheus/storage/metric"
 )
@@ -43,33 +42,36 @@ type SamplesDumper struct {
 	*csv.Writer
 }
 
-func (d SamplesDumper) DecodeKey(in interface{}) (interface{}, error) {
+func (d *SamplesDumper) DecodeKey(in interface{}) (interface{}, error) {
 	key := &dto.SampleKey{}
 	err := proto.Unmarshal(in.([]byte), key)
 	if err != nil {
 		return nil, err
 	}
 
-	return model.NewSampleKeyFromDTO(key), nil
+	sampleKey := &metric.SampleKey{}
+	sampleKey.Load(key)
+
+	return sampleKey, nil
 }
 
-func (d SamplesDumper) DecodeValue(in interface{}) (interface{}, error) {
+func (d *SamplesDumper) DecodeValue(in interface{}) (interface{}, error) {
 	values := &dto.SampleValueSeries{}
 	err := proto.Unmarshal(in.([]byte), values)
 	if err != nil {
 		return nil, err
 	}
 
-	return model.NewValuesFromDTO(values), nil
+	return metric.NewValuesFromDTO(values), nil
 }
 
-func (d SamplesDumper) Filter(_, _ interface{}) storage.FilterResult {
+func (d *SamplesDumper) Filter(_, _ interface{}) storage.FilterResult {
 	return storage.ACCEPT
 }
 
-func (d SamplesDumper) Operate(key, value interface{}) *storage.OperatorError {
-	sampleKey := key.(model.SampleKey)
-	for i, sample := range value.(model.Values) {
+func (d *SamplesDumper) Operate(key, value interface{}) *storage.OperatorError {
+	sampleKey := key.(*metric.SampleKey)
+	for i, sample := range value.(metric.Values) {
 		d.Write([]string{
 			sampleKey.Fingerprint.String(),
 			strconv.FormatInt(sampleKey.FirstTimestamp.Unix(), 10),
@@ -102,7 +104,10 @@ func main() {
 	}
 	defer persistence.Close()
 
-	dumper := SamplesDumper{csv.NewWriter(os.Stdout)}
+	dumper := &SamplesDumper{
+		csv.NewWriter(os.Stdout),
+	}
+
 	entire, err := persistence.MetricSamples.ForEach(dumper, dumper, dumper)
 	if err != nil {
 		log.Fatalf("Error dumping samples: %s", err)

web/api/query.go

@@ -14,17 +14,20 @@
 package api
 
 import (
-	"code.google.com/p/gorest"
 	"encoding/json"
 	"errors"
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/rules"
-	"github.com/prometheus/prometheus/rules/ast"
-	"github.com/prometheus/prometheus/stats"
 	"log"
 	"net/http"
 	"sort"
 	"time"
+
+	"code.google.com/p/gorest"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	"github.com/prometheus/prometheus/rules"
+	"github.com/prometheus/prometheus/rules/ast"
+	"github.com/prometheus/prometheus/stats"
 )
 
 func (serv MetricsService) setAccessControlHeaders(rb *gorest.ResponseBuilder) {
@@ -114,7 +117,7 @@ func (serv MetricsService) QueryRange(expr string, end int64, duration int64, st
 }
 
 func (serv MetricsService) Metrics() string {
-	metricNames, err := serv.Storage.GetAllValuesForLabel(model.MetricNameLabel)
+	metricNames, err := serv.Storage.GetAllValuesForLabel(clientmodel.MetricNameLabel)
 	rb := serv.ResponseBuilder()
 	serv.setAccessControlHeaders(rb)
 	rb.SetContentType(gorest.Application_Json)

web/api/targets.go

@@ -14,10 +14,12 @@
 package api
 
 import (
-	"github.com/prometheus/prometheus/model"
-	"github.com/prometheus/prometheus/retrieval"
 	"net/http"
 	"time"
+
+	clientmodel "github.com/prometheus/client_golang/model"
+
+	"github.com/prometheus/prometheus/retrieval"
 )
 
 type TargetGroup struct {
@@ -37,11 +39,11 @@ func (serv MetricsService) SetTargets(targetGroups []TargetGroup, jobName string
 
 	for _, targetGroup := range targetGroups {
 		// Do mandatory map type conversion due to Go shortcomings.
-		baseLabels := model.LabelSet{
-			model.JobLabel: model.LabelValue(job.GetName()),
+		baseLabels := clientmodel.LabelSet{
+			clientmodel.JobLabel: clientmodel.LabelValue(job.GetName()),
 		}
 		for label, value := range targetGroup.BaseLabels {
-			baseLabels[model.LabelName(label)] = model.LabelValue(value)
+			baseLabels[clientmodel.LabelName(label)] = clientmodel.LabelValue(value)
 		}
 
 		for _, endpoint := range targetGroup.Endpoints {