Merge branch 'main' into linasm/optimize-floatBucketIterator2

Signed-off-by: Linas Medžiūnas <linasm@users.noreply.github.com>

RELEASE.md

@@ -52,7 +52,8 @@ Release cadence of first pre-releases being cut is 6 weeks.
 | v2.45 LTS      | 2023-05-31                                 | Jesus Vazquez (Github: @jesusvazquez)       |
 | v2.46          | 2023-07-12                                 | Julien Pivotto (GitHub: @roidelapluie)      |
 | v2.47          | 2023-08-23                                 | Bryan Boreham (GitHub: @bboreham)           |
-| v2.48          | 2023-10-04                                 | **searching for volunteer**                 |
+| v2.48          | 2023-10-04                                 | Levi Harrison (GitHub: @LeviHarrison)       |
+| v2.49          | 2023-11-15                                 | **searching for volunteer**                 |
 
 If you are interested in volunteering please create a pull request against the [prometheus/prometheus](https://github.com/prometheus/prometheus) repository and propose yourself for the release series of your choice.
 

cmd/prometheus/main.go

@@ -202,8 +202,10 @@ func (c *flagConfig) setFeatureListOptions(logger log.Logger) error {
 				level.Info(logger).Log("msg", "No default port will be appended to scrape targets' addresses.")
 			case "native-histograms":
 				c.tsdb.EnableNativeHistograms = true
-				c.scrape.EnableProtobufNegotiation = true
+				// Change relevant global variables. Hacky, but it's hard to pass a new option or default to unmarshallers.
-				level.Info(logger).Log("msg", "Experimental native histogram support enabled.")
+				config.DefaultConfig.GlobalConfig.ScrapeProtocols = config.DefaultNativeHistogramScrapeProtocols
+				config.DefaultGlobalConfig.ScrapeProtocols = config.DefaultNativeHistogramScrapeProtocols
+				level.Info(logger).Log("msg", "Experimental native histogram support enabled. Changed default scrape_protocols to prefer PrometheusProto format.", "global.scrape_protocols", fmt.Sprintf("%v", config.DefaultGlobalConfig.ScrapeProtocols))
 			case "":
 				continue
 			case "promql-at-modifier", "promql-negative-offset":
@@ -619,8 +621,18 @@ func main() {
 		discoveryManagerNotify = legacymanager.NewManager(ctxNotify, log.With(logger, "component", "discovery manager notify"), legacymanager.Name("notify"))
 	}
 
+	scrapeManager, err := scrape.NewManager(
+		&cfg.scrape,
+		log.With(logger, "component", "scrape manager"),
+		fanoutStorage,
+		prometheus.DefaultRegisterer,
+	)
+	if err != nil {
+		level.Error(logger).Log("msg", "failed to create a scrape manager", "err", err)
+		os.Exit(1)
+	}
+
 	var (
-		scrapeManager  = scrape.NewManager(&cfg.scrape, log.With(logger, "component", "scrape manager"), fanoutStorage)
 		tracingManager = tracing.NewManager(logger)
 
 		queryEngine *promql.Engine

cmd/promtool/testdata/no-test-group-interval.yml

@@ -0,0 +1,15 @@
+tests:
+  - input_series:
+      - series: test
+        values: 0 1
+    promql_expr_test:
+      - expr: test
+        eval_time: 59s
+        exp_samples:
+          - value: 0
+            labels: test
+      - expr: test
+        eval_time: 1m
+        exp_samples:
+          - value: 1
+            labels: test

cmd/promtool/tsdb.go

@@ -18,7 +18,6 @@ import (
 	"context"
 	"fmt"
 	"io"
-	"math"
 	"os"
 	"path/filepath"
 	"runtime"
@@ -459,7 +458,16 @@ func analyzeBlock(ctx context.Context, path, blockID string, limit int, runExten
 	postingInfos := []postingInfo{}
 
 	printInfo := func(postingInfos []postingInfo) {
-		slices.SortFunc(postingInfos, func(a, b postingInfo) int { return int(b.metric) - int(a.metric) })
+		slices.SortFunc(postingInfos, func(a, b postingInfo) int {
+			switch {
+			case b.metric < a.metric:
+				return -1
+			case b.metric > a.metric:
+				return 1
+			default:
+				return 0
+			}
+		})
 
 		for i, pc := range postingInfos {
 			if i >= limit {
@@ -620,10 +628,12 @@ func analyzeCompaction(ctx context.Context, block tsdb.BlockReader, indexr tsdb.
 		err = tsdb_errors.NewMulti(err, chunkr.Close()).Err()
 	}()
 
-	const maxSamplesPerChunk = 120
-	nBuckets := 10
-	histogram := make([]int, nBuckets)
 	totalChunks := 0
+	floatChunkSamplesCount := make([]int, 0)
+	floatChunkSize := make([]int, 0)
+	histogramChunkSamplesCount := make([]int, 0)
+	histogramChunkSize := make([]int, 0)
+	histogramChunkBucketsCount := make([]int, 0)
 	var builder labels.ScratchBuilder
 	for postingsr.Next() {
 		var chks []chunks.Meta
@@ -637,26 +647,56 @@ func analyzeCompaction(ctx context.Context, block tsdb.BlockReader, indexr tsdb.
 			if err != nil {
 				return err
 			}
-			chunkSize := math.Min(float64(chk.NumSamples()), maxSamplesPerChunk)
+			switch chk.Encoding() {
-			// Calculate the bucket for the chunk and increment it in the histogram.
+			case chunkenc.EncXOR:
-			bucket := int(math.Ceil(float64(nBuckets)*chunkSize/maxSamplesPerChunk)) - 1
+				floatChunkSamplesCount = append(floatChunkSamplesCount, chk.NumSamples())
-			histogram[bucket]++
+				floatChunkSize = append(floatChunkSize, len(chk.Bytes()))
+			case chunkenc.EncFloatHistogram:
+				histogramChunkSamplesCount = append(histogramChunkSamplesCount, chk.NumSamples())
+				histogramChunkSize = append(histogramChunkSize, len(chk.Bytes()))
+				fhchk, ok := chk.(*chunkenc.FloatHistogramChunk)
+				if !ok {
+					return fmt.Errorf("chunk is not FloatHistogramChunk")
+				}
+				it := fhchk.Iterator(nil)
+				bucketCount := 0
+				for it.Next() == chunkenc.ValFloatHistogram {
+					_, f := it.AtFloatHistogram()
+					bucketCount += len(f.PositiveBuckets)
+					bucketCount += len(f.NegativeBuckets)
+				}
+				histogramChunkBucketsCount = append(histogramChunkBucketsCount, bucketCount)
+			case chunkenc.EncHistogram:
+				histogramChunkSamplesCount = append(histogramChunkSamplesCount, chk.NumSamples())
+				histogramChunkSize = append(histogramChunkSize, len(chk.Bytes()))
+				hchk, ok := chk.(*chunkenc.HistogramChunk)
+				if !ok {
+					return fmt.Errorf("chunk is not HistogramChunk")
+				}
+				it := hchk.Iterator(nil)
+				bucketCount := 0
+				for it.Next() == chunkenc.ValHistogram {
+					_, f := it.AtHistogram()
+					bucketCount += len(f.PositiveBuckets)
+					bucketCount += len(f.NegativeBuckets)
+				}
+				histogramChunkBucketsCount = append(histogramChunkBucketsCount, bucketCount)
+			}
 			totalChunks++
 		}
 	}
 
 	fmt.Printf("\nCompaction analysis:\n")
-	fmt.Println("Fullness: Amount of samples in chunks (100% is 120 samples)")
+	fmt.Println()
-	// Normalize absolute counts to percentages and print them out.
+	displayHistogram("samples per float chunk", floatChunkSamplesCount, totalChunks)
-	for bucket, count := range histogram {
-		percentage := 100.0 * count / totalChunks
-		fmt.Printf("%7d%%: ", (bucket+1)*10)
-		for j := 0; j < percentage; j++ {
-			fmt.Printf("#")
-		}
-		fmt.Println()
-	}
 
+	displayHistogram("bytes per float chunk", floatChunkSize, totalChunks)
+
+	displayHistogram("samples per histogram chunk", histogramChunkSamplesCount, totalChunks)
+
+	displayHistogram("bytes per histogram chunk", histogramChunkSize, totalChunks)
+
+	displayHistogram("buckets per histogram chunk", histogramChunkBucketsCount, totalChunks)
 	return nil
 }
 
@@ -732,3 +772,42 @@ func backfillOpenMetrics(path, outputDir string, humanReadable, quiet bool, maxB
 
 	return checkErr(backfill(5000, inputFile.Bytes(), outputDir, humanReadable, quiet, maxBlockDuration))
 }
+
+func displayHistogram(dataType string, datas []int, total int) {
+	slices.Sort(datas)
+	start, end, step := generateBucket(datas[0], datas[len(datas)-1])
+	sum := 0
+	buckets := make([]int, (end-start)/step+1)
+	maxCount := 0
+	for _, c := range datas {
+		sum += c
+		buckets[(c-start)/step]++
+		if buckets[(c-start)/step] > maxCount {
+			maxCount = buckets[(c-start)/step]
+		}
+	}
+	avg := sum / len(datas)
+	fmt.Printf("%s (min/avg/max): %d/%d/%d\n", dataType, datas[0], avg, datas[len(datas)-1])
+	maxLeftLen := strconv.Itoa(len(fmt.Sprintf("%d", end)))
+	maxRightLen := strconv.Itoa(len(fmt.Sprintf("%d", end+step)))
+	maxCountLen := strconv.Itoa(len(fmt.Sprintf("%d", maxCount)))
+	for bucket, count := range buckets {
+		percentage := 100.0 * count / total
+		fmt.Printf("[%"+maxLeftLen+"d, %"+maxRightLen+"d]: %"+maxCountLen+"d %s\n", bucket*step+start+1, (bucket+1)*step+start, count, strings.Repeat("#", percentage))
+	}
+	fmt.Println()
+}
+
+func generateBucket(min, max int) (start, end, step int) {
+	s := (max - min) / 10
+
+	step = 10
+	for step < s && step <= 10000 {
+		step *= 10
+	}
+
+	start = min - min%step
+	end = max - max%step + step
+
+	return
+}

cmd/promtool/tsdb_test.go

@@ -0,0 +1,43 @@
+// Copyright 2017 The Prometheus Authors
+// 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 main
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestGenerateBucket(t *testing.T) {
+	tcs := []struct {
+		min, max         int
+		start, end, step int
+	}{
+		{
+			min:   101,
+			max:   141,
+			start: 100,
+			end:   150,
+			step:  10,
+		},
+	}
+
+	for _, tc := range tcs {
+		start, end, step := generateBucket(tc.min, tc.max)
+
+		require.Equal(t, tc.start, start)
+		require.Equal(t, tc.end, end)
+		require.Equal(t, tc.step, step)
+	}
+}

cmd/promtool/unittest.go

@@ -96,6 +96,9 @@ func ruleUnitTest(filename string, queryOpts promql.LazyLoaderOpts) []error {
 	// Testing.
 	var errs []error
 	for _, t := range unitTestInp.Tests {
+		if t.Interval == 0 {
+			t.Interval = unitTestInp.EvaluationInterval
+		}
 		ers := t.test(evalInterval, groupOrderMap, queryOpts, unitTestInp.RuleFiles...)
 		if ers != nil {
 			errs = append(errs, ers...)

cmd/promtool/unittest_test.go

@@ -112,6 +112,16 @@ func TestRulesUnitTest(t *testing.T) {
 			},
 			want: 0,
 		},
+		{
+			name: "No test group interval",
+			args: args{
+				files: []string{"./testdata/no-test-group-interval.yml"},
+			},
+			queryOpts: promql.LazyLoaderOpts{
+				EnableNegativeOffset: true,
+			},
+			want: 0,
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {

config/config.go

@@ -19,6 +19,7 @@ import (
 	"net/url"
 	"os"
 	"path/filepath"
+	"sort"
 	"strings"
 	"time"
 
@@ -143,12 +144,14 @@ var (
 		ScrapeInterval:     model.Duration(1 * time.Minute),
 		ScrapeTimeout:      model.Duration(10 * time.Second),
 		EvaluationInterval: model.Duration(1 * time.Minute),
+		// When native histogram feature flag is enabled, ScrapeProtocols default
+		// changes to DefaultNativeHistogramScrapeProtocols.
+		ScrapeProtocols: DefaultScrapeProtocols,
 	}
 
 	// DefaultScrapeConfig is the default scrape configuration.
 	DefaultScrapeConfig = ScrapeConfig{
-		// ScrapeTimeout and ScrapeInterval default to the configured
+		// ScrapeTimeout, ScrapeInterval and ScrapeProtocols default to the configured globals.
-		// globals.
 		ScrapeClassicHistograms: false,
 		MetricsPath:             "/metrics",
 		Scheme:                  "http",
@@ -260,7 +263,7 @@ func (c Config) String() string {
 	return string(b)
 }
 
-// ScrapeConfigs returns the scrape configurations.
+// GetScrapeConfigs returns the scrape configurations.
 func (c *Config) GetScrapeConfigs() ([]*ScrapeConfig, error) {
 	scfgs := make([]*ScrapeConfig, len(c.ScrapeConfigs))
 
@@ -385,6 +388,11 @@ type GlobalConfig struct {
 	ScrapeInterval model.Duration `yaml:"scrape_interval,omitempty"`
 	// The default timeout when scraping targets.
 	ScrapeTimeout model.Duration `yaml:"scrape_timeout,omitempty"`
+	// The protocols to negotiate during a scrape. It tells clients what
+	// protocol are accepted by Prometheus and with what weight (most wanted is first).
+	// Supported values (case sensitive): PrometheusProto, OpenMetricsText0.0.1,
+	// OpenMetricsText1.0.0, PrometheusText0.0.4.
+	ScrapeProtocols []ScrapeProtocol `yaml:"scrape_protocols,omitempty"`
 	// How frequently to evaluate rules by default.
 	EvaluationInterval model.Duration `yaml:"evaluation_interval,omitempty"`
 	// File to which PromQL queries are logged.
@@ -414,6 +422,68 @@ type GlobalConfig struct {
 	KeepDroppedTargets uint `yaml:"keep_dropped_targets,omitempty"`
 }
 
+// ScrapeProtocol represents supported protocol for scraping metrics.
+type ScrapeProtocol string
+
+// Validate returns error if given scrape protocol is not supported.
+func (s ScrapeProtocol) Validate() error {
+	if _, ok := ScrapeProtocolsHeaders[s]; !ok {
+		return fmt.Errorf("unknown scrape protocol %v, supported: %v",
+			s, func() (ret []string) {
+				for k := range ScrapeProtocolsHeaders {
+					ret = append(ret, string(k))
+				}
+				sort.Strings(ret)
+				return ret
+			}())
+	}
+	return nil
+}
+
+var (
+	PrometheusProto      ScrapeProtocol = "PrometheusProto"
+	PrometheusText0_0_4  ScrapeProtocol = "PrometheusText0.0.4"
+	OpenMetricsText0_0_1 ScrapeProtocol = "OpenMetricsText0.0.1"
+	OpenMetricsText1_0_0 ScrapeProtocol = "OpenMetricsText1.0.0"
+
+	ScrapeProtocolsHeaders = map[ScrapeProtocol]string{
+		PrometheusProto:      "application/vnd.google.protobuf;proto=io.prometheus.client.MetricFamily;encoding=delimited",
+		PrometheusText0_0_4:  "text/plain;version=0.0.4",
+		OpenMetricsText0_0_1: "application/openmetrics-text;version=0.0.1",
+		OpenMetricsText1_0_0: "application/openmetrics-text;version=1.0.0",
+	}
+
+	DefaultScrapeProtocols = []ScrapeProtocol{
+		OpenMetricsText1_0_0,
+		OpenMetricsText0_0_1,
+		PrometheusText0_0_4,
+	}
+	DefaultNativeHistogramScrapeProtocols = []ScrapeProtocol{
+		PrometheusProto,
+		OpenMetricsText1_0_0,
+		OpenMetricsText0_0_1,
+		PrometheusText0_0_4,
+	}
+)
+
+// validateAcceptScrapeProtocols return errors if we see problems with accept scrape protocols option.
+func validateAcceptScrapeProtocols(sps []ScrapeProtocol) error {
+	if len(sps) == 0 {
+		return errors.New("scrape_protocols cannot be empty")
+	}
+	dups := map[string]struct{}{}
+	for _, sp := range sps {
+		if _, ok := dups[strings.ToLower(string(sp))]; ok {
+			return fmt.Errorf("duplicated protocol in scrape_protocols, got %v", sps)
+		}
+		if err := sp.Validate(); err != nil {
+			return fmt.Errorf("scrape_protocols: %w", err)
+		}
+		dups[strings.ToLower(string(sp))] = struct{}{}
+	}
+	return nil
+}
+
 // SetDirectory joins any relative file paths with dir.
 func (c *GlobalConfig) SetDirectory(dir string) {
 	c.QueryLogFile = config.JoinDir(dir, c.QueryLogFile)
@@ -459,6 +529,14 @@ func (c *GlobalConfig) UnmarshalYAML(unmarshal func(interface{}) error) error {
 	if gc.EvaluationInterval == 0 {
 		gc.EvaluationInterval = DefaultGlobalConfig.EvaluationInterval
 	}
+
+	if gc.ScrapeProtocols == nil {
+		gc.ScrapeProtocols = DefaultGlobalConfig.ScrapeProtocols
+	}
+	if err := validateAcceptScrapeProtocols(gc.ScrapeProtocols); err != nil {
+		return fmt.Errorf("%w for global config", err)
+	}
+
 	*c = *gc
 	return nil
 }
@@ -469,7 +547,8 @@ func (c *GlobalConfig) isZero() bool {
 		c.ScrapeInterval == 0 &&
 		c.ScrapeTimeout == 0 &&
 		c.EvaluationInterval == 0 &&
-		c.QueryLogFile == ""
+		c.QueryLogFile == "" &&
+		c.ScrapeProtocols == nil
 }
 
 type ScrapeConfigs struct {
@@ -490,6 +569,11 @@ type ScrapeConfig struct {
 	ScrapeInterval model.Duration `yaml:"scrape_interval,omitempty"`
 	// The timeout for scraping targets of this config.
 	ScrapeTimeout model.Duration `yaml:"scrape_timeout,omitempty"`
+	// The protocols to negotiate during a scrape. It tells clients what
+	// protocol are accepted by Prometheus and with what preference (most wanted is first).
+	// Supported values (case sensitive): PrometheusProto, OpenMetricsText0.0.1,
+	// OpenMetricsText1.0.0, PrometheusText0.0.4.
+	ScrapeProtocols []ScrapeProtocol `yaml:"scrape_protocols,omitempty"`
 	// Whether to scrape a classic histogram that is also exposed as a native histogram.
 	ScrapeClassicHistograms bool `yaml:"scrape_classic_histograms,omitempty"`
 	// The HTTP resource path on which to fetch metrics from targets.
@@ -577,6 +661,7 @@ func (c *ScrapeConfig) UnmarshalYAML(unmarshal func(interface{}) error) error {
 	return nil
 }
 
+// Validate validates scrape config, but also fills relevant default values from global config if needed.
 func (c *ScrapeConfig) Validate(globalConfig GlobalConfig) error {
 	if c == nil {
 		return errors.New("empty or null scrape config section")
@@ -618,6 +703,13 @@ func (c *ScrapeConfig) Validate(globalConfig GlobalConfig) error {
 		c.KeepDroppedTargets = globalConfig.KeepDroppedTargets
 	}
 
+	if c.ScrapeProtocols == nil {
+		c.ScrapeProtocols = globalConfig.ScrapeProtocols
+	}
+	if err := validateAcceptScrapeProtocols(c.ScrapeProtocols); err != nil {
+		return fmt.Errorf("%w for scrape config with job name %q", err, c.JobName)
+	}
+
 	return nil
 }
 

config/config_test.go

@@ -92,6 +92,7 @@ var expectedConf = &Config{
 		LabelLimit:            globLabelLimit,
 		LabelNameLengthLimit:  globLabelNameLengthLimit,
 		LabelValueLengthLimit: globLabelValueLengthLimit,
+		ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 	},
 
 	RuleFiles: []string{
@@ -191,6 +192,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath: DefaultScrapeConfig.MetricsPath,
 			Scheme:      DefaultScrapeConfig.Scheme,
@@ -292,6 +294,7 @@ var expectedConf = &Config{
 			LabelLimit:            35,
 			LabelNameLengthLimit:  210,
 			LabelValueLengthLimit: 210,
+			ScrapeProtocols:       []ScrapeProtocol{PrometheusText0_0_4},
 
 			HTTPClientConfig: config.HTTPClientConfig{
 				BasicAuth: &config.BasicAuth{
@@ -387,6 +390,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -440,6 +444,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath: "/metrics",
 			Scheme:      "http",
@@ -471,6 +476,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -508,6 +514,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath: DefaultScrapeConfig.MetricsPath,
 			Scheme:      DefaultScrapeConfig.Scheme,
@@ -545,6 +552,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -571,6 +579,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -606,6 +615,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -638,6 +648,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -677,6 +688,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -706,6 +718,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -738,6 +751,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -763,6 +777,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -791,6 +806,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      "/federate",
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -819,6 +835,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -847,6 +864,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -872,6 +890,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -905,6 +924,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -937,6 +957,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -965,6 +986,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -993,6 +1015,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -1025,6 +1048,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -1060,6 +1084,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -1114,6 +1139,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -1139,6 +1165,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			HTTPClientConfig: config.DefaultHTTPClientConfig,
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
@@ -1175,6 +1202,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			HTTPClientConfig: config.DefaultHTTPClientConfig,
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
@@ -1217,6 +1245,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -1250,6 +1279,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			HTTPClientConfig: config.DefaultHTTPClientConfig,
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
@@ -1277,6 +1307,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -1307,6 +1338,7 @@ var expectedConf = &Config{
 			LabelLimit:            globLabelLimit,
 			LabelNameLengthLimit:  globLabelNameLengthLimit,
 			LabelValueLengthLimit: globLabelValueLengthLimit,
+			ScrapeProtocols:       DefaultGlobalConfig.ScrapeProtocols,
 
 			MetricsPath:      DefaultScrapeConfig.MetricsPath,
 			Scheme:           DefaultScrapeConfig.Scheme,
@@ -1925,6 +1957,14 @@ var expectedErrors = []struct {
 		filename: "scrape_config_files_glob.bad.yml",
 		errMsg:   `parsing YAML file testdata/scrape_config_files_glob.bad.yml: invalid scrape config file path "scrape_configs/*/*"`,
 	},
+	{
+		filename: "scrape_config_files_scrape_protocols.bad.yml",
+		errMsg:   `parsing YAML file testdata/scrape_config_files_scrape_protocols.bad.yml: scrape_protocols: unknown scrape protocol prometheusproto, supported: [OpenMetricsText0.0.1 OpenMetricsText1.0.0 PrometheusProto PrometheusText0.0.4] for scrape config with job name "node"`,
+	},
+	{
+		filename: "scrape_config_files_scrape_protocols2.bad.yml",
+		errMsg:   `parsing YAML file testdata/scrape_config_files_scrape_protocols2.bad.yml: duplicated protocol in scrape_protocols, got [OpenMetricsText1.0.0 PrometheusProto OpenMetricsText1.0.0] for scrape config with job name "node"`,
+	},
 }
 
 func TestBadConfigs(t *testing.T) {
@@ -2014,10 +2054,12 @@ func TestEmptyGlobalBlock(t *testing.T) {
 func TestGetScrapeConfigs(t *testing.T) {
 	sc := func(jobName string, scrapeInterval, scrapeTimeout model.Duration) *ScrapeConfig {
 		return &ScrapeConfig{
-			JobName:          jobName,
+			JobName:         jobName,
-			HonorTimestamps:  true,
+			HonorTimestamps: true,
-			ScrapeInterval:   scrapeInterval,
+			ScrapeInterval:  scrapeInterval,
-			ScrapeTimeout:    scrapeTimeout,
+			ScrapeTimeout:   scrapeTimeout,
+			ScrapeProtocols: DefaultGlobalConfig.ScrapeProtocols,
+
 			MetricsPath:      "/metrics",
 			Scheme:           "http",
 			HTTPClientConfig: config.DefaultHTTPClientConfig,
@@ -2071,6 +2113,7 @@ func TestGetScrapeConfigs(t *testing.T) {
 					HonorTimestamps: true,
 					ScrapeInterval:  model.Duration(60 * time.Second),
 					ScrapeTimeout:   DefaultGlobalConfig.ScrapeTimeout,
+					ScrapeProtocols: DefaultGlobalConfig.ScrapeProtocols,
 
 					MetricsPath: DefaultScrapeConfig.MetricsPath,
 					Scheme:      DefaultScrapeConfig.Scheme,
@@ -2101,6 +2144,8 @@ func TestGetScrapeConfigs(t *testing.T) {
 					HonorTimestamps: true,
 					ScrapeInterval:  model.Duration(15 * time.Second),
 					ScrapeTimeout:   DefaultGlobalConfig.ScrapeTimeout,
+					ScrapeProtocols: DefaultGlobalConfig.ScrapeProtocols,
+
 					HTTPClientConfig: config.HTTPClientConfig{
 						TLSConfig: config.TLSConfig{
 							CertFile: filepath.FromSlash("testdata/valid_cert_file"),

config/testdata/conf.good.yml

@@ -114,6 +114,7 @@ scrape_configs:
 
     scrape_interval: 50s
     scrape_timeout: 5s
+    scrape_protocols: ["PrometheusText0.0.4"]
 
     body_size_limit: 10MB
     sample_limit: 1000
@@ -122,7 +123,6 @@ scrape_configs:
     label_name_length_limit: 210
     label_value_length_limit: 210
 
-
     metrics_path: /my_path
     scheme: https
 

config/testdata/scrape_config_files_scrape_protocols.bad.yml

@@ -0,0 +1,5 @@
+scrape_configs:
+  - job_name: node
+    scrape_protocols: ["prometheusproto"]
+    static_configs:
+      - targets: ['localhost:8080']

config/testdata/scrape_config_files_scrape_protocols2.bad.yml

@@ -0,0 +1,5 @@
+scrape_configs:
+  - job_name: node
+    scrape_protocols: ["OpenMetricsText1.0.0", "PrometheusProto", "OpenMetricsText1.0.0"]
+    static_configs:
+      - targets: ['localhost:8080']

discovery/azure/azure.go

@@ -23,11 +23,13 @@ import (
 	"sync"
 	"time"
 
-	"github.com/Azure/azure-sdk-for-go/services/compute/mgmt/2018-10-01/compute"
+	"github.com/Azure/azure-sdk-for-go/sdk/azcore"
-	"github.com/Azure/azure-sdk-for-go/services/network/mgmt/2018-10-01/network"
+	"github.com/Azure/azure-sdk-for-go/sdk/azcore/arm"
-	"github.com/Azure/go-autorest/autorest"
+	"github.com/Azure/azure-sdk-for-go/sdk/azcore/cloud"
-	"github.com/Azure/go-autorest/autorest/adal"
+	"github.com/Azure/azure-sdk-for-go/sdk/azcore/policy"
-	"github.com/Azure/go-autorest/autorest/azure"
+	"github.com/Azure/azure-sdk-for-go/sdk/azidentity"
+	"github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/compute/armcompute/v4"
+	"github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/network/armnetwork/v2"
 	"github.com/go-kit/log"
 	"github.com/go-kit/log/level"
 	"github.com/prometheus/client_golang/prometheus"
@@ -68,7 +70,7 @@ var (
 	DefaultSDConfig = SDConfig{
 		Port:                 80,
 		RefreshInterval:      model.Duration(5 * time.Minute),
-		Environment:          azure.PublicCloud.Name,
+		Environment:          "AzurePublicCloud",
 		AuthenticationMethod: authMethodOAuth,
 		HTTPClientConfig:     config_util.DefaultHTTPClientConfig,
 	}
@@ -80,6 +82,26 @@ var (
 		})
 )
 
+var environments = map[string]cloud.Configuration{
+	"AZURECHINACLOUD":        cloud.AzureChina,
+	"AZURECLOUD":             cloud.AzurePublic,
+	"AZUREGERMANCLOUD":       cloud.AzurePublic,
+	"AZUREPUBLICCLOUD":       cloud.AzurePublic,
+	"AZUREUSGOVERNMENT":      cloud.AzureGovernment,
+	"AZUREUSGOVERNMENTCLOUD": cloud.AzureGovernment,
+}
+
+// CloudConfigurationFromName returns cloud configuration based on the common name specified.
+func CloudConfigurationFromName(name string) (cloud.Configuration, error) {
+	name = strings.ToUpper(name)
+	env, ok := environments[name]
+	if !ok {
+		return env, fmt.Errorf("There is no cloud configuration matching the name %q", name)
+	}
+
+	return env, nil
+}
+
 func init() {
 	discovery.RegisterConfig(&SDConfig{})
 	prometheus.MustRegister(failuresCount)
@@ -175,80 +197,88 @@ func NewDiscovery(cfg *SDConfig, logger log.Logger) *Discovery {
 
 // azureClient represents multiple Azure Resource Manager providers.
 type azureClient struct {
-	nic    network.InterfacesClient
+	nic    *armnetwork.InterfacesClient
-	vm     compute.VirtualMachinesClient
+	vm     *armcompute.VirtualMachinesClient
-	vmss   compute.VirtualMachineScaleSetsClient
+	vmss   *armcompute.VirtualMachineScaleSetsClient
-	vmssvm compute.VirtualMachineScaleSetVMsClient
+	vmssvm *armcompute.VirtualMachineScaleSetVMsClient
+	logger log.Logger
 }
 
 // createAzureClient is a helper function for creating an Azure compute client to ARM.
 func createAzureClient(cfg SDConfig) (azureClient, error) {
-	env, err := azure.EnvironmentFromName(cfg.Environment)
+	cloudConfiguration, err := CloudConfigurationFromName(cfg.Environment)
 	if err != nil {
 		return azureClient{}, err
 	}
 
-	activeDirectoryEndpoint := env.ActiveDirectoryEndpoint
-	resourceManagerEndpoint := env.ResourceManagerEndpoint
-
 	var c azureClient
 
-	var spt *adal.ServicePrincipalToken
+	telemetry := policy.TelemetryOptions{
+		ApplicationID: userAgent,
+	}
 
-	switch cfg.AuthenticationMethod {
+	credential, err := newCredential(cfg, policy.ClientOptions{
-	case authMethodManagedIdentity:
+		Cloud:     cloudConfiguration,
-		spt, err = adal.NewServicePrincipalTokenFromManagedIdentity(resourceManagerEndpoint, &adal.ManagedIdentityOptions{ClientID: cfg.ClientID})
+		Telemetry: telemetry,
-		if err != nil {
+	})
-			return azureClient{}, err
+	if err != nil {
-		}
+		return azureClient{}, err
-	case authMethodOAuth:
-		oauthConfig, err := adal.NewOAuthConfig(activeDirectoryEndpoint, cfg.TenantID)
-		if err != nil {
-			return azureClient{}, err
-		}
-
-		spt, err = adal.NewServicePrincipalToken(*oauthConfig, cfg.ClientID, string(cfg.ClientSecret), resourceManagerEndpoint)
-		if err != nil {
-			return azureClient{}, err
-		}
 	}
 
 	client, err := config_util.NewClientFromConfig(cfg.HTTPClientConfig, "azure_sd")
 	if err != nil {
 		return azureClient{}, err
 	}
-	sender := autorest.DecorateSender(client)
+	options := &arm.ClientOptions{
-	preparer := autorest.WithUserAgent(userAgent)
+		ClientOptions: policy.ClientOptions{
+			Transport: client,
+			Cloud:     cloudConfiguration,
+			Telemetry: telemetry,
+		},
+	}
 
-	bearerAuthorizer := autorest.NewBearerAuthorizer(spt)
+	c.vm, err = armcompute.NewVirtualMachinesClient(cfg.SubscriptionID, credential, options)
+	if err != nil {
+		return azureClient{}, err
+	}
 
-	c.vm = compute.NewVirtualMachinesClientWithBaseURI(resourceManagerEndpoint, cfg.SubscriptionID)
+	c.nic, err = armnetwork.NewInterfacesClient(cfg.SubscriptionID, credential, options)
-	c.vm.Authorizer = bearerAuthorizer
+	if err != nil {
-	c.vm.Sender = sender
+		return azureClient{}, err
-	c.vm.RequestInspector = preparer
+	}
 
-	c.nic = network.NewInterfacesClientWithBaseURI(resourceManagerEndpoint, cfg.SubscriptionID)
+	c.vmss, err = armcompute.NewVirtualMachineScaleSetsClient(cfg.SubscriptionID, credential, options)
-	c.nic.Authorizer = bearerAuthorizer
+	if err != nil {
-	c.nic.Sender = sender
+		return azureClient{}, err
-	c.nic.RequestInspector = preparer
+	}
 
-	c.vmss = compute.NewVirtualMachineScaleSetsClientWithBaseURI(resourceManagerEndpoint, cfg.SubscriptionID)
+	c.vmssvm, err = armcompute.NewVirtualMachineScaleSetVMsClient(cfg.SubscriptionID, credential, options)
-	c.vmss.Authorizer = bearerAuthorizer
+	if err != nil {
-	c.vmss.Sender = sender
+		return azureClient{}, err
-	c.vmss.RequestInspector = preparer
+	}
-
-	c.vmssvm = compute.NewVirtualMachineScaleSetVMsClientWithBaseURI(resourceManagerEndpoint, cfg.SubscriptionID)
-	c.vmssvm.Authorizer = bearerAuthorizer
-	c.vmssvm.Sender = sender
-	c.vmssvm.RequestInspector = preparer
 
 	return c, nil
 }
 
-// azureResource represents a resource identifier in Azure.
+func newCredential(cfg SDConfig, policyClientOptions policy.ClientOptions) (azcore.TokenCredential, error) {
-type azureResource struct {
+	var credential azcore.TokenCredential
-	Name          string
+	switch cfg.AuthenticationMethod {
-	ResourceGroup string
+	case authMethodManagedIdentity:
+		options := &azidentity.ManagedIdentityCredentialOptions{ClientOptions: policyClientOptions, ID: azidentity.ClientID(cfg.ClientID)}
+		managedIdentityCredential, err := azidentity.NewManagedIdentityCredential(options)
+		if err != nil {
+			return nil, err
+		}
+		credential = azcore.TokenCredential(managedIdentityCredential)
+	case authMethodOAuth:
+		options := &azidentity.ClientSecretCredentialOptions{ClientOptions: policyClientOptions}
+		secretCredential, err := azidentity.NewClientSecretCredential(cfg.TenantID, cfg.ClientID, string(cfg.ClientSecret), options)
+		if err != nil {
+			return nil, err
+		}
+		credential = azcore.TokenCredential(secretCredential)
+	}
+	return credential, nil
 }
 
 // virtualMachine represents an Azure virtual machine (which can also be created by a VMSS)
@@ -266,22 +296,17 @@ type virtualMachine struct {
 }
 
 // Create a new azureResource object from an ID string.
-func newAzureResourceFromID(id string, logger log.Logger) (azureResource, error) {
+func newAzureResourceFromID(id string, logger log.Logger) (*arm.ResourceID, error) {
-	// Resource IDs have the following format.
+	if logger == nil {
-	// /subscriptions/SUBSCRIPTION_ID/resourceGroups/RESOURCE_GROUP/providers/PROVIDER/TYPE/NAME
+		logger = log.NewNopLogger()
-	// or if embedded resource then
-	// /subscriptions/SUBSCRIPTION_ID/resourceGroups/RESOURCE_GROUP/providers/PROVIDER/TYPE/NAME/TYPE/NAME
-	s := strings.Split(id, "/")
-	if len(s) != 9 && len(s) != 11 {
-		err := fmt.Errorf("invalid ID '%s'. Refusing to create azureResource", id)
-		level.Error(logger).Log("err", err)
-		return azureResource{}, err
 	}
-
+	resourceID, err := arm.ParseResourceID(id)
-	return azureResource{
+	if err != nil {
-		Name:          strings.ToLower(s[8]),
+		err := fmt.Errorf("invalid ID '%s': %w", id, err)
-		ResourceGroup: strings.ToLower(s[4]),
+		level.Error(logger).Log("err", err)
-	}, nil
+		return &arm.ResourceID{}, err
+	}
+	return resourceID, nil
 }
 
 func (d *Discovery) refresh(ctx context.Context) ([]*targetgroup.Group, error) {
@@ -292,6 +317,7 @@ func (d *Discovery) refresh(ctx context.Context) ([]*targetgroup.Group, error) {
 		failuresCount.Inc()
 		return nil, fmt.Errorf("could not create Azure client: %w", err)
 	}
+	client.logger = d.logger
 
 	machines, err := client.getVMs(ctx, d.cfg.ResourceGroup)
 	if err != nil {
@@ -344,7 +370,7 @@ func (d *Discovery) refresh(ctx context.Context) ([]*targetgroup.Group, error) {
 				azureLabelMachineComputerName:  model.LabelValue(vm.ComputerName),
 				azureLabelMachineOSType:        model.LabelValue(vm.OsType),
 				azureLabelMachineLocation:      model.LabelValue(vm.Location),
-				azureLabelMachineResourceGroup: model.LabelValue(r.ResourceGroup),
+				azureLabelMachineResourceGroup: model.LabelValue(r.ResourceGroupName),
 				azureLabelMachineSize:          model.LabelValue(vm.Size),
 			}
 
@@ -370,7 +396,7 @@ func (d *Discovery) refresh(ctx context.Context) ([]*targetgroup.Group, error) {
 					return
 				}
 
-				if networkInterface.InterfacePropertiesFormat == nil {
+				if networkInterface.Properties == nil {
 					continue
 				}
 
@@ -378,21 +404,21 @@ func (d *Discovery) refresh(ctx context.Context) ([]*targetgroup.Group, error) {
 				// This information is available via another API call however the Go SDK does not
 				// yet support this. On deallocated machines, this value happens to be nil so it
 				// is a cheap and easy way to determine if a machine is allocated or not.
-				if networkInterface.Primary == nil {
+				if networkInterface.Properties.Primary == nil {
 					level.Debug(d.logger).Log("msg", "Skipping deallocated virtual machine", "machine", vm.Name)
 					return
 				}
 
-				if *networkInterface.Primary {
+				if *networkInterface.Properties.Primary {
-					for _, ip := range *networkInterface.IPConfigurations {
+					for _, ip := range networkInterface.Properties.IPConfigurations {
 						// IPAddress is a field defined in PublicIPAddressPropertiesFormat,
 						// therefore we need to validate that both are not nil.
-						if ip.PublicIPAddress != nil && ip.PublicIPAddress.PublicIPAddressPropertiesFormat != nil && ip.PublicIPAddress.IPAddress != nil {
+						if ip.Properties != nil && ip.Properties.PublicIPAddress != nil && ip.Properties.PublicIPAddress.Properties != nil && ip.Properties.PublicIPAddress.Properties.IPAddress != nil {
-							labels[azureLabelMachinePublicIP] = model.LabelValue(*ip.PublicIPAddress.IPAddress)
+							labels[azureLabelMachinePublicIP] = model.LabelValue(*ip.Properties.PublicIPAddress.Properties.IPAddress)
 						}
-						if ip.PrivateIPAddress != nil {
+						if ip.Properties != nil && ip.Properties.PrivateIPAddress != nil {
-							labels[azureLabelMachinePrivateIP] = model.LabelValue(*ip.PrivateIPAddress)
+							labels[azureLabelMachinePrivateIP] = model.LabelValue(*ip.Properties.PrivateIPAddress)
-							address := net.JoinHostPort(*ip.PrivateIPAddress, fmt.Sprintf("%d", d.port))
+							address := net.JoinHostPort(*ip.Properties.PrivateIPAddress, fmt.Sprintf("%d", d.port))
 							labels[model.AddressLabel] = model.LabelValue(address)
 							ch <- target{labelSet: labels, err: nil}
 							return
@@ -427,93 +453,84 @@ func (d *Discovery) refresh(ctx context.Context) ([]*targetgroup.Group, error) {
 
 func (client *azureClient) getVMs(ctx context.Context, resourceGroup string) ([]virtualMachine, error) {
 	var vms []virtualMachine
-	var result compute.VirtualMachineListResultPage
-	var err error
 	if len(resourceGroup) == 0 {
-		result, err = client.vm.ListAll(ctx)
+		pager := client.vm.NewListAllPager(nil)
+		for pager.More() {
+			nextResult, err := pager.NextPage(ctx)
+			if err != nil {
+				return nil, fmt.Errorf("could not list virtual machines: %w", err)
+			}
+			for _, vm := range nextResult.Value {
+				vms = append(vms, mapFromVM(*vm))
+			}
+		}
 	} else {
-		result, err = client.vm.List(ctx, resourceGroup)
+		pager := client.vm.NewListPager(resourceGroup, nil)
-	}
+		for pager.More() {
-	if err != nil {
+			nextResult, err := pager.NextPage(ctx)
-		return nil, fmt.Errorf("could not list virtual machines: %w", err)
+			if err != nil {
-	}
+				return nil, fmt.Errorf("could not list virtual machines: %w", err)
-	for result.NotDone() {
+			}
-		for _, vm := range result.Values() {
+			for _, vm := range nextResult.Value {
-			vms = append(vms, mapFromVM(vm))
+				vms = append(vms, mapFromVM(*vm))
-		}
+			}
-		err = result.NextWithContext(ctx)
-		if err != nil {
-			return nil, fmt.Errorf("could not list virtual machines: %w", err)
 		}
 	}
-
 	return vms, nil
 }
 
-type VmssListResultPage interface {
+func (client *azureClient) getScaleSets(ctx context.Context, resourceGroup string) ([]armcompute.VirtualMachineScaleSet, error) {
-	NextWithContext(ctx context.Context) (err error)
+	var scaleSets []armcompute.VirtualMachineScaleSet
-	NotDone() bool
-	Values() []compute.VirtualMachineScaleSet
-}
-
-func (client *azureClient) getScaleSets(ctx context.Context, resourceGroup string) ([]compute.VirtualMachineScaleSet, error) {
-	var scaleSets []compute.VirtualMachineScaleSet
-	var result VmssListResultPage
-	var err error
 	if len(resourceGroup) == 0 {
-		var rtn compute.VirtualMachineScaleSetListWithLinkResultPage
+		pager := client.vmss.NewListAllPager(nil)
-		rtn, err = client.vmss.ListAll(ctx)
+		for pager.More() {
-		if err != nil {
+			nextResult, err := pager.NextPage(ctx)
-			return nil, fmt.Errorf("could not list virtual machine scale sets: %w", err)
+			if err != nil {
+				return nil, fmt.Errorf("could not list virtual machine scale sets: %w", err)
+			}
+			for _, vmss := range nextResult.Value {
+				scaleSets = append(scaleSets, *vmss)
+			}
 		}
-		result = &rtn
 	} else {
-		var rtn compute.VirtualMachineScaleSetListResultPage
+		pager := client.vmss.NewListPager(resourceGroup, nil)
-		rtn, err = client.vmss.List(ctx, resourceGroup)
+		for pager.More() {
-		if err != nil {
+			nextResult, err := pager.NextPage(ctx)
-			return nil, fmt.Errorf("could not list virtual machine scale sets: %w", err)
+			if err != nil {
-		}
+				return nil, fmt.Errorf("could not list virtual machine scale sets: %w", err)
-		result = &rtn
+			}
-	}
+			for _, vmss := range nextResult.Value {
-
+				scaleSets = append(scaleSets, *vmss)
-	for result.NotDone() {
+			}
-		scaleSets = append(scaleSets, result.Values()...)
-		err = result.NextWithContext(ctx)
-		if err != nil {
-			return nil, fmt.Errorf("could not list virtual machine scale sets: %w", err)
 		}
 	}
-
 	return scaleSets, nil
 }
 
-func (client *azureClient) getScaleSetVMs(ctx context.Context, scaleSet compute.VirtualMachineScaleSet) ([]virtualMachine, error) {
+func (client *azureClient) getScaleSetVMs(ctx context.Context, scaleSet armcompute.VirtualMachineScaleSet) ([]virtualMachine, error) {
 	var vms []virtualMachine
 	// TODO do we really need to fetch the resourcegroup this way?
-	r, err := newAzureResourceFromID(*scaleSet.ID, nil)
+	r, err := newAzureResourceFromID(*scaleSet.ID, client.logger)
 	if err != nil {
 		return nil, fmt.Errorf("could not parse scale set ID: %w", err)
 	}
 
-	result, err := client.vmssvm.List(ctx, r.ResourceGroup, *(scaleSet.Name), "", "", "")
+	pager := client.vmssvm.NewListPager(r.ResourceGroupName, *(scaleSet.Name), nil)
-	if err != nil {
+	for pager.More() {
-		return nil, fmt.Errorf("could not list virtual machine scale set vms: %w", err)
+		nextResult, err := pager.NextPage(ctx)
-	}
-	for result.NotDone() {
-		for _, vm := range result.Values() {
-			vms = append(vms, mapFromVMScaleSetVM(vm, *scaleSet.Name))
-		}
-		err = result.NextWithContext(ctx)
 		if err != nil {
 			return nil, fmt.Errorf("could not list virtual machine scale set vms: %w", err)
 		}
+		for _, vmssvm := range nextResult.Value {
+			vms = append(vms, mapFromVMScaleSetVM(*vmssvm, *scaleSet.Name))
+		}
 	}
 
 	return vms, nil
 }
 
-func mapFromVM(vm compute.VirtualMachine) virtualMachine {
+func mapFromVM(vm armcompute.VirtualMachine) virtualMachine {
-	osType := string(vm.StorageProfile.OsDisk.OsType)
+	osType := string(*vm.Properties.StorageProfile.OSDisk.OSType)
 	tags := map[string]*string{}
 	networkInterfaces := []string{}
 	var computerName string
@@ -523,18 +540,17 @@ func mapFromVM(vm compute.VirtualMachine) virtualMachine {
 		tags = vm.Tags
 	}
 
-	if vm.NetworkProfile != nil {
+	if vm.Properties != nil {
-		for _, vmNIC := range *(vm.NetworkProfile.NetworkInterfaces) {
+		if vm.Properties.NetworkProfile != nil {
-			networkInterfaces = append(networkInterfaces, *vmNIC.ID)
+			for _, vmNIC := range vm.Properties.NetworkProfile.NetworkInterfaces {
+				networkInterfaces = append(networkInterfaces, *vmNIC.ID)
+			}
 		}
-	}
+		if vm.Properties.OSProfile != nil && vm.Properties.OSProfile.ComputerName != nil {
-
+			computerName = *(vm.Properties.OSProfile.ComputerName)
-	if vm.VirtualMachineProperties != nil {
-		if vm.VirtualMachineProperties.OsProfile != nil && vm.VirtualMachineProperties.OsProfile.ComputerName != nil {
-			computerName = *(vm.VirtualMachineProperties.OsProfile.ComputerName)
 		}
-		if vm.VirtualMachineProperties.HardwareProfile != nil {
+		if vm.Properties.HardwareProfile != nil {
-			size = string(vm.VirtualMachineProperties.HardwareProfile.VMSize)
+			size = string(*vm.Properties.HardwareProfile.VMSize)
 		}
 	}
 
@@ -552,8 +568,8 @@ func mapFromVM(vm compute.VirtualMachine) virtualMachine {
 	}
 }
 
-func mapFromVMScaleSetVM(vm compute.VirtualMachineScaleSetVM, scaleSetName string) virtualMachine {
+func mapFromVMScaleSetVM(vm armcompute.VirtualMachineScaleSetVM, scaleSetName string) virtualMachine {
-	osType := string(vm.StorageProfile.OsDisk.OsType)
+	osType := string(*vm.Properties.StorageProfile.OSDisk.OSType)
 	tags := map[string]*string{}
 	networkInterfaces := []string{}
 	var computerName string
@@ -563,18 +579,17 @@ func mapFromVMScaleSetVM(vm compute.VirtualMachineScaleSetVM, scaleSetName strin
 		tags = vm.Tags
 	}
 
-	if vm.NetworkProfile != nil {
+	if vm.Properties != nil {
-		for _, vmNIC := range *(vm.NetworkProfile.NetworkInterfaces) {
+		if vm.Properties.NetworkProfile != nil {
-			networkInterfaces = append(networkInterfaces, *vmNIC.ID)
+			for _, vmNIC := range vm.Properties.NetworkProfile.NetworkInterfaces {
+				networkInterfaces = append(networkInterfaces, *vmNIC.ID)
+			}
 		}
-	}
+		if vm.Properties.OSProfile != nil && vm.Properties.OSProfile.ComputerName != nil {
-
+			computerName = *(vm.Properties.OSProfile.ComputerName)
-	if vm.VirtualMachineScaleSetVMProperties != nil {
-		if vm.VirtualMachineScaleSetVMProperties.OsProfile != nil && vm.VirtualMachineScaleSetVMProperties.OsProfile.ComputerName != nil {
-			computerName = *(vm.VirtualMachineScaleSetVMProperties.OsProfile.ComputerName)
 		}
-		if vm.VirtualMachineScaleSetVMProperties.HardwareProfile != nil {
+		if vm.Properties.HardwareProfile != nil {
-			size = string(vm.VirtualMachineScaleSetVMProperties.HardwareProfile.VMSize)
+			size = string(*vm.Properties.HardwareProfile.VMSize)
 		}
 	}
 
@@ -596,36 +611,20 @@ var errorNotFound = errors.New("network interface does not exist")
 
 // getNetworkInterfaceByID gets the network interface.
 // If a 404 is returned from the Azure API, `errorNotFound` is returned.
-// On all other errors, an autorest.DetailedError is returned.
+func (client *azureClient) getNetworkInterfaceByID(ctx context.Context, networkInterfaceID string) (*armnetwork.Interface, error) {
-func (client *azureClient) getNetworkInterfaceByID(ctx context.Context, networkInterfaceID string) (*network.Interface, error) {
+	r, err := newAzureResourceFromID(networkInterfaceID, client.logger)
-	result := network.Interface{}
+	if err != nil {
-	queryParameters := map[string]interface{}{
+		return nil, fmt.Errorf("could not parse network interface ID: %w", err)
-		"api-version": "2018-10-01",
 	}
 
-	preparer := autorest.CreatePreparer(
+	resp, err := client.nic.Get(ctx, r.ResourceGroupName, r.Name, nil)
-		autorest.AsGet(),
-		autorest.WithBaseURL(client.nic.BaseURI),
-		autorest.WithPath(networkInterfaceID),
-		autorest.WithQueryParameters(queryParameters),
-		autorest.WithUserAgent(userAgent))
-	req, err := preparer.Prepare((&http.Request{}).WithContext(ctx))
 	if err != nil {
-		return nil, autorest.NewErrorWithError(err, "network.InterfacesClient", "Get", nil, "Failure preparing request")
+		var responseError *azcore.ResponseError
-	}
+		if errors.As(err, &responseError) && responseError.StatusCode == http.StatusNotFound {
-
-	resp, err := client.nic.GetSender(req)
-	if err != nil {
-		return nil, autorest.NewErrorWithError(err, "network.InterfacesClient", "Get", resp, "Failure sending request")
-	}
-
-	result, err = client.nic.GetResponder(resp)
-	if err != nil {
-		if resp.StatusCode == http.StatusNotFound {
 			return nil, errorNotFound
 		}
-		return nil, autorest.NewErrorWithError(err, "network.InterfacesClient", "Get", resp, "Failure responding to request")
+		return nil, fmt.Errorf("Failed to retrieve Interface %v with error: %w", networkInterfaceID, err)
 	}
 
-	return &result, nil
+	return &resp.Interface, nil
 }

discovery/azure/azure_test.go

@@ -16,7 +16,8 @@ package azure
 import (
 	"testing"
 
-	"github.com/Azure/azure-sdk-for-go/services/compute/mgmt/2018-10-01/compute"
+	"github.com/Azure/azure-sdk-for-go/sdk/azcore/arm"
+	"github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/compute/armcompute/v4"
 	"github.com/stretchr/testify/require"
 	"go.uber.org/goleak"
 )
@@ -29,34 +30,36 @@ func TestMapFromVMWithEmptyTags(t *testing.T) {
 	id := "test"
 	name := "name"
 	size := "size"
+	vmSize := armcompute.VirtualMachineSizeTypes(size)
+	osType := armcompute.OperatingSystemTypesLinux
 	vmType := "type"
 	location := "westeurope"
 	computerName := "computer_name"
-	networkProfile := compute.NetworkProfile{
+	networkProfile := armcompute.NetworkProfile{
-		NetworkInterfaces: &[]compute.NetworkInterfaceReference{},
+		NetworkInterfaces: []*armcompute.NetworkInterfaceReference{},
 	}
-	properties := &compute.VirtualMachineProperties{
+	properties := &armcompute.VirtualMachineProperties{
-		OsProfile: &compute.OSProfile{
+		OSProfile: &armcompute.OSProfile{
 			ComputerName: &computerName,
 		},
-		StorageProfile: &compute.StorageProfile{
+		StorageProfile: &armcompute.StorageProfile{
-			OsDisk: &compute.OSDisk{
+			OSDisk: &armcompute.OSDisk{
-				OsType: "Linux",
+				OSType: &osType,
 			},
 		},
 		NetworkProfile: &networkProfile,
-		HardwareProfile: &compute.HardwareProfile{
+		HardwareProfile: &armcompute.HardwareProfile{
-			VMSize: compute.VirtualMachineSizeTypes(size),
+			VMSize: &vmSize,
 		},
 	}
 
-	testVM := compute.VirtualMachine{
+	testVM := armcompute.VirtualMachine{
-		ID:                       &id,
+		ID:         &id,
-		Name:                     &name,
+		Name:       &name,
-		Type:                     &vmType,
+		Type:       &vmType,
-		Location:                 &location,
+		Location:   &location,
-		Tags:                     nil,
+		Tags:       nil,
-		VirtualMachineProperties: properties,
+		Properties: properties,
 	}
 
 	expectedVM := virtualMachine{
@@ -80,37 +83,39 @@ func TestMapFromVMWithTags(t *testing.T) {
 	id := "test"
 	name := "name"
 	size := "size"
+	vmSize := armcompute.VirtualMachineSizeTypes(size)
+	osType := armcompute.OperatingSystemTypesLinux
 	vmType := "type"
 	location := "westeurope"
 	computerName := "computer_name"
 	tags := map[string]*string{
 		"prometheus": new(string),
 	}
-	networkProfile := compute.NetworkProfile{
+	networkProfile := armcompute.NetworkProfile{
-		NetworkInterfaces: &[]compute.NetworkInterfaceReference{},
+		NetworkInterfaces: []*armcompute.NetworkInterfaceReference{},
 	}
-	properties := &compute.VirtualMachineProperties{
+	properties := &armcompute.VirtualMachineProperties{
-		OsProfile: &compute.OSProfile{
+		OSProfile: &armcompute.OSProfile{
 			ComputerName: &computerName,
 		},
-		StorageProfile: &compute.StorageProfile{
+		StorageProfile: &armcompute.StorageProfile{
-			OsDisk: &compute.OSDisk{
+			OSDisk: &armcompute.OSDisk{
-				OsType: "Linux",
+				OSType: &osType,
 			},
 		},
 		NetworkProfile: &networkProfile,
-		HardwareProfile: &compute.HardwareProfile{
+		HardwareProfile: &armcompute.HardwareProfile{
-			VMSize: compute.VirtualMachineSizeTypes(size),
+			VMSize: &vmSize,
 		},
 	}
 
-	testVM := compute.VirtualMachine{
+	testVM := armcompute.VirtualMachine{
-		ID:                       &id,
+		ID:         &id,
-		Name:                     &name,
+		Name:       &name,
-		Type:                     &vmType,
+		Type:       &vmType,
-		Location:                 &location,
+		Location:   &location,
-		Tags:                     tags,
+		Tags:       tags,
-		VirtualMachineProperties: properties,
+		Properties: properties,
 	}
 
 	expectedVM := virtualMachine{
@@ -134,34 +139,36 @@ func TestMapFromVMScaleSetVMWithEmptyTags(t *testing.T) {
 	id := "test"
 	name := "name"
 	size := "size"
+	vmSize := armcompute.VirtualMachineSizeTypes(size)
+	osType := armcompute.OperatingSystemTypesLinux
 	vmType := "type"
 	location := "westeurope"
 	computerName := "computer_name"
-	networkProfile := compute.NetworkProfile{
+	networkProfile := armcompute.NetworkProfile{
-		NetworkInterfaces: &[]compute.NetworkInterfaceReference{},
+		NetworkInterfaces: []*armcompute.NetworkInterfaceReference{},
 	}
-	properties := &compute.VirtualMachineScaleSetVMProperties{
+	properties := &armcompute.VirtualMachineScaleSetVMProperties{
-		OsProfile: &compute.OSProfile{
+		OSProfile: &armcompute.OSProfile{
 			ComputerName: &computerName,
 		},
-		StorageProfile: &compute.StorageProfile{
+		StorageProfile: &armcompute.StorageProfile{
-			OsDisk: &compute.OSDisk{
+			OSDisk: &armcompute.OSDisk{
-				OsType: "Linux",
+				OSType: &osType,
 			},
 		},
 		NetworkProfile: &networkProfile,
-		HardwareProfile: &compute.HardwareProfile{
+		HardwareProfile: &armcompute.HardwareProfile{
-			VMSize: compute.VirtualMachineSizeTypes(size),
+			VMSize: &vmSize,
 		},
 	}
 
-	testVM := compute.VirtualMachineScaleSetVM{
+	testVM := armcompute.VirtualMachineScaleSetVM{
-		ID:                                 &id,
+		ID:         &id,
-		Name:                               &name,
+		Name:       &name,
-		Type:                               &vmType,
+		Type:       &vmType,
-		Location:                           &location,
+		Location:   &location,
-		Tags:                               nil,
+		Tags:       nil,
-		VirtualMachineScaleSetVMProperties: properties,
+		Properties: properties,
 	}
 
 	scaleSet := "testSet"
@@ -187,37 +194,39 @@ func TestMapFromVMScaleSetVMWithTags(t *testing.T) {
 	id := "test"
 	name := "name"
 	size := "size"
+	vmSize := armcompute.VirtualMachineSizeTypes(size)
+	osType := armcompute.OperatingSystemTypesLinux
 	vmType := "type"
 	location := "westeurope"
 	computerName := "computer_name"
 	tags := map[string]*string{
 		"prometheus": new(string),
 	}
-	networkProfile := compute.NetworkProfile{
+	networkProfile := armcompute.NetworkProfile{
-		NetworkInterfaces: &[]compute.NetworkInterfaceReference{},
+		NetworkInterfaces: []*armcompute.NetworkInterfaceReference{},
 	}
-	properties := &compute.VirtualMachineScaleSetVMProperties{
+	properties := &armcompute.VirtualMachineScaleSetVMProperties{
-		OsProfile: &compute.OSProfile{
+		OSProfile: &armcompute.OSProfile{
 			ComputerName: &computerName,
 		},
-		StorageProfile: &compute.StorageProfile{
+		StorageProfile: &armcompute.StorageProfile{
-			OsDisk: &compute.OSDisk{
+			OSDisk: &armcompute.OSDisk{
-				OsType: "Linux",
+				OSType: &osType,
 			},
 		},
 		NetworkProfile: &networkProfile,
-		HardwareProfile: &compute.HardwareProfile{
+		HardwareProfile: &armcompute.HardwareProfile{
-			VMSize: compute.VirtualMachineSizeTypes(size),
+			VMSize: &vmSize,
 		},
 	}
 
-	testVM := compute.VirtualMachineScaleSetVM{
+	testVM := armcompute.VirtualMachineScaleSetVM{
-		ID:                                 &id,
+		ID:         &id,
-		Name:                               &name,
+		Name:       &name,
-		Type:                               &vmType,
+		Type:       &vmType,
-		Location:                           &location,
+		Location:   &location,
-		Tags:                               tags,
+		Tags:       tags,
-		VirtualMachineScaleSetVMProperties: properties,
+		Properties: properties,
 	}
 
 	scaleSet := "testSet"
@@ -242,18 +251,26 @@ func TestMapFromVMScaleSetVMWithTags(t *testing.T) {
 func TestNewAzureResourceFromID(t *testing.T) {
 	for _, tc := range []struct {
 		id       string
-		expected azureResource
+		expected *arm.ResourceID
 	}{
 		{
-			id:       "/a/b/c/group/d/e/f/name",
+			id: "/subscriptions/SUBSCRIPTION_ID/resourceGroups/group/providers/PROVIDER/TYPE/name",
-			expected: azureResource{"name", "group"},
+			expected: &arm.ResourceID{
+				Name:              "name",
+				ResourceGroupName: "group",
+			},
 		},
 		{
-			id:       "/a/b/c/group/d/e/f/name/g/h",
+			id: "/subscriptions/SUBSCRIPTION_ID/resourceGroups/group/providers/PROVIDER/TYPE/name/TYPE/h",
-			expected: azureResource{"name", "group"},
+			expected: &arm.ResourceID{
+				Name:              "h",
+				ResourceGroupName: "group",
+			},
 		},
 	} {
-		actual, _ := newAzureResourceFromID(tc.id, nil)
+		actual, err := newAzureResourceFromID(tc.id, nil)
-		require.Equal(t, tc.expected, actual)
+		require.Nil(t, err)
+		require.Equal(t, tc.expected.Name, actual.Name)
+		require.Equal(t, tc.expected.ResourceGroupName, actual.ResourceGroupName)
 	}
 }

docs/configuration/configuration.md

@@ -61,6 +61,13 @@ global:
   # How long until a scrape request times out.
   [ scrape_timeout: <duration> | default = 10s ]
 
+  # The protocols to negotiate during a scrape with the client.
+  # Supported values (case sensitive): PrometheusProto, OpenMetricsText0.0.1,
+  # OpenMetricsText1.0.0, PrometheusText0.0.4.
+  # The default value changes to [ PrometheusProto, OpenMetricsText1.0.0, OpenMetricsText0.0.1, PrometheusText0.0.4 ]
+  # when native_histogram feature flag is set.
+  [ scrape_protocols: [<string>, ...] | default = [ OpenMetricsText1.0.0, OpenMetricsText0.0.1, PrometheusText0.0.4 ] ]
+
   # How frequently to evaluate rules.
   [ evaluation_interval: <duration> | default = 1m ]
 
@@ -171,6 +178,11 @@ job_name: <job_name>
 # Per-scrape timeout when scraping this job.
 [ scrape_timeout: <duration> | default = <global_config.scrape_timeout> ]
 
+# The protocols to negotiate during a scrape with the client.
+# Supported values (case sensitive): PrometheusProto, OpenMetricsText0.0.1,
+# OpenMetricsText1.0.0, PrometheusText0.0.4.
+[ scrape_protocols: [<string>, ...] | default = <global_config.scrape_protocols> ]
+
 # Whether to scrape a classic histogram that is also exposed as a native
 # histogram (has no effect without --enable-feature=native-histograms).
 [ scrape_classic_histograms: <boolean> | default = false ]

docs/configuration/unit_testing_rules.md

@@ -39,7 +39,7 @@ tests:
 
 ``` yaml
 # Series data
-interval: <duration>
+[ interval: <duration> | default = evaluation_interval ]
 input_series:
   [ - <series> ]
 
@@ -80,7 +80,7 @@ series: <string>
 #     Read this as series starts at a, then n further samples incrementing by b.
 #     'a-bxn' becomes 'a a-b a-(2*b) a-(3*b) … a-(n*b)'
 #     Read this as series starts at a, then n further samples decrementing by b (or incrementing by negative b).
-#     'axn' becomes 'a a a … a' (n times) - it's a shorthand for 'a+0xn'
+#     'axn' becomes 'a a a … a' (a n+1 times) - it's a shorthand for 'a+0xn'
 # There are special values to indicate missing and stale samples:
 #     '_' represents a missing sample from scrape
 #     'stale' indicates a stale sample

documentation/examples/remote_storage/go.mod

@@ -10,20 +10,20 @@ require (
 	github.com/influxdata/influxdb v1.11.2
 	github.com/prometheus/client_golang v1.17.0
 	github.com/prometheus/common v0.44.0
-	github.com/prometheus/prometheus v0.45.0
+	github.com/prometheus/prometheus v0.47.2
 	github.com/stretchr/testify v1.8.4
 )
 
 require (
-	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.3.1 // indirect
+	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.7.0 // indirect
-	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.2.1 // indirect
+	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.3.0 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/internal v1.3.0 // indirect
-	github.com/AzureAD/microsoft-authentication-library-for-go v0.8.1 // indirect
+	github.com/AzureAD/microsoft-authentication-library-for-go v1.0.0 // indirect
 	github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137 // indirect
-	github.com/aws/aws-sdk-go v1.44.276 // indirect
+	github.com/aws/aws-sdk-go v1.44.302 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
-	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/dennwc/varint v1.0.0 // indirect
 	github.com/felixge/httpsnoop v1.0.3 // indirect
 	github.com/go-logfmt/logfmt v0.6.0 // indirect
@@ -35,31 +35,39 @@ require (
 	github.com/grafana/regexp v0.0.0-20221122212121-6b5c0a4cb7fd // indirect
 	github.com/jmespath/go-jmespath v0.4.0 // indirect
 	github.com/jpillora/backoff v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/compress v1.16.7 // indirect
 	github.com/kr/text v0.2.0 // indirect
 	github.com/kylelemons/godebug v1.1.0 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f // indirect
 	github.com/pkg/browser v0.0.0-20210911075715-681adbf594b8 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/prometheus/client_model v0.4.1-0.20230718164431-9a2bf3000d16 // indirect
 	github.com/prometheus/common/sigv4 v0.1.0 // indirect
 	github.com/prometheus/procfs v0.11.1 // indirect
 	github.com/xhit/go-str2duration/v2 v2.1.0 // indirect
+	go.opentelemetry.io/collector/pdata v1.0.0-rcv0014 // indirect
+	go.opentelemetry.io/collector/semconv v0.81.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.42.0 // indirect
 	go.opentelemetry.io/otel v1.16.0 // indirect
 	go.opentelemetry.io/otel/metric v1.16.0 // indirect
 	go.opentelemetry.io/otel/trace v1.16.0 // indirect
 	go.uber.org/atomic v1.11.0 // indirect
-	go.uber.org/goleak v1.2.1 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
-	golang.org/x/crypto v0.8.0 // indirect
+	golang.org/x/crypto v0.11.0 // indirect
-	golang.org/x/exp v0.0.0-20230522175609-2e198f4a06a1 // indirect
+	golang.org/x/exp v0.0.0-20230713183714-613f0c0eb8a1 // indirect
-	golang.org/x/net v0.10.0 // indirect
+	golang.org/x/net v0.12.0 // indirect
-	golang.org/x/oauth2 v0.8.0 // indirect
+	golang.org/x/oauth2 v0.10.0 // indirect
 	golang.org/x/sys v0.11.0 // indirect
-	golang.org/x/text v0.9.0 // indirect
+	golang.org/x/text v0.11.0 // indirect
 	golang.org/x/time v0.3.0 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20230717213848-3f92550aa753 // indirect
+	google.golang.org/grpc v1.56.2 // indirect
 	google.golang.org/protobuf v1.31.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect

documentation/examples/remote_storage/go.sum

@@ -1,8 +1,8 @@
 github.com/Azure/azure-sdk-for-go v65.0.0+incompatible h1:HzKLt3kIwMm4KeJYTdx9EbjRYTySD/t8i1Ee/W5EGXw=
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-github.com/Azure/azure-sdk-for-go/sdk/azcore v1.3.1/go.mod h1:DffdKW9RFqa5VgmsjUOsS7UE7eiA5iAvYUs63bhKQ0M=
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-github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.2.1/go.mod h1:gLa1CL2RNE4s7M3yopJ/p0iq5DdY6Yv5ZUt9MTRZOQM=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.3.0/go.mod h1:OQeznEEkTZ9OrhHJoDD8ZDq51FHgXjqtP9z6bEwBq9U=
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 github.com/Azure/go-autorest v14.2.0+incompatible h1:V5VMDjClD3GiElqLWO7mz2MxNAK/vTfRHdAubSIPRgs=
@@ -13,9 +13,9 @@ github.com/Azure/go-autorest/autorest/to v0.4.0 h1:oXVqrxakqqV1UZdSazDOPOLvOIz+X
 github.com/Azure/go-autorest/autorest/validation v0.3.1 h1:AgyqjAd94fwNAoTjl/WQXg4VvFeRFpO+UhNyRXqF1ac=
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 github.com/Azure/go-autorest/tracing v0.6.0 h1:TYi4+3m5t6K48TGI9AUdb+IzbnSxvnvUMfuitfgcfuo=
-github.com/AzureAD/microsoft-authentication-library-for-go v0.8.1 h1:oPdPEZFSbl7oSPEAIPMPBMUmiL+mqgzBJwM/9qYcwNg=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.0.0 h1:OBhqkivkhkMqLPymWEppkm7vgPQY2XsHoEkaMQ0AdZY=
-github.com/AzureAD/microsoft-authentication-library-for-go v0.8.1/go.mod h1:4qFor3D/HDsvBME35Xy9rwW9DecL+M2sNw1ybjPtwA0=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.0.0/go.mod h1:kgDmCTgBzIEPFElEF+FK0SdjAor06dRq2Go927dnQ6o=
-github.com/Microsoft/go-winio v0.6.0 h1:slsWYD/zyx7lCXoZVlvQrj0hPTM1HI4+v1sIda2yDvg=
+github.com/Microsoft/go-winio v0.6.1 h1:9/kr64B9VUZrLm5YYwbGtUJnMgqWVOdUAXu6Migciow=
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@@ -27,8 +27,8 @@ github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137 h1:s6gZFSlWYmbqAu
 github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137/go.mod h1:OMCwj8VM1Kc9e19TLln2VL61YJF0x1XFtfdL4JdbSyE=
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 github.com/aws/aws-sdk-go v1.38.35/go.mod h1:hcU610XS61/+aQV88ixoOzUoG7v3b31pl2zKMmprdro=
-github.com/aws/aws-sdk-go v1.44.276 h1:ywPlx9C5Yc482dUgAZ9bHpQ6onVvJvYE9FJWsNDCEy0=
+github.com/aws/aws-sdk-go v1.44.302 h1:ST3ko6GrJKn3Xi+nAvxjG3uk/V1pW8KC52WLeIxqqNk=
-github.com/aws/aws-sdk-go v1.44.276/go.mod h1:aVsgQcEevwlmQ7qHE9I3h+dtQgpqhFB+i8Phjh7fkwI=
+github.com/aws/aws-sdk-go v1.44.302/go.mod h1:aVsgQcEevwlmQ7qHE9I3h+dtQgpqhFB+i8Phjh7fkwI=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
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 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
@@ -36,24 +36,25 @@ github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6r
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
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-github.com/cncf/xds/go v0.0.0-20230428030218-4003588d1b74 h1:zlUubfBUxApscKFsF4VSvvfhsBNTBu0eF/ddvpo96yk=
+github.com/cncf/xds/go v0.0.0-20230607035331-e9ce68804cb4 h1:/inchEIKaYC1Akx+H+gqO04wryn5h75LSazbRlnya1k=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
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-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
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-github.com/envoyproxy/protoc-gen-validate v1.0.1 h1:kt9FtLiooDc0vbwTLhdg3dyNX1K9Qwa1EK9LcD4jVUQ=
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-github.com/fatih/color v1.14.1 h1:qfhVLaG5s+nCROl1zJsZRxFeYrHLqWroPOQ8BWiNb4w=
+github.com/fatih/color v1.15.0 h1:kOqh6YHBtK8aywxGerMG2Eq3H6Qgoqeo13Bk2Mv/nBs=
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@@ -72,9 +73,9 @@ github.com/go-logr/logr v1.2.4 h1:g01GSCwiDw2xSZfjJ2/T9M+S6pFdcNtFYsp+Y43HYDQ=
 github.com/go-logr/logr v1.2.4/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
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 github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
-github.com/go-openapi/jsonpointer v0.19.6 h1:eCs3fxoIi3Wh6vtgmLTOjdhSpiqphQ+DaPn38N2ZdrE=
+github.com/go-openapi/jsonpointer v0.20.0 h1:ESKJdU9ASRfaPNOPRx12IUyA1vn3R9GiE3KYD14BXdQ=
 github.com/go-openapi/jsonreference v0.20.2 h1:3sVjiK66+uXK/6oQ8xgcRKcFgQ5KXa2KvnJRumpMGbE=
-github.com/go-openapi/swag v0.22.3 h1:yMBqmnQ0gyZvEb/+KzuWZOXgllrXT4SADYbvDaXHv/g=
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@@ -110,27 +111,27 @@ github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/
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-github.com/gophercloud/gophercloud v1.4.0 h1:RqEu43vaX0lb0LanZr5BylK5ICVxjpFFoc0sxivyuHU=
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@@ -142,10 +143,13 @@ github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCV
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 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
@@ -158,14 +162,14 @@ github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
 github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
-github.com/linode/linodego v1.17.0 h1:aWS98f0jUoY2lhsEuBxRdVkqyGM0nazPd68AEDF0EvU=
+github.com/linode/linodego v1.19.0 h1:n4WJrcr9+30e9JGZ6DI0nZbm5SdAj1kSwvvt/998YUw=
 github.com/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0=
 github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
-github.com/mattn/go-isatty v0.0.17 h1:BTarxUcIeDqL27Mc+vyvdWYSL28zpIhv3RoTdsLMPng=
+github.com/mattn/go-isatty v0.0.19 h1:JITubQf0MOLdlGRuRq+jtsDlekdYPia9ZFsB8h/APPA=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
 github.com/matttproud/golang_protobuf_extensions v1.0.4 h1:mmDVorXM7PCGKw94cs5zkfA9PSy5pEvNWRP0ET0TIVo=
 github.com/matttproud/golang_protobuf_extensions v1.0.4/go.mod h1:BSXmuO+STAnVfrANrmjBb36TMTDstsz7MSK+HVaYKv4=
-github.com/miekg/dns v1.1.54 h1:5jon9mWcb0sFJGpnI99tOMhCPyJ+RPVz5b63MQG0VWI=
+github.com/miekg/dns v1.1.55 h1:GoQ4hpsj0nFLYe+bWiCToyrBEJXkQfOOIvFGFy0lEgo=
 github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
 github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
@@ -174,6 +178,7 @@ github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJ
 github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
+github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq1c1nUAm88MOHcQC9l5mIlSMApZMrHA=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f h1:KUppIJq7/+SVif2QVs3tOP0zanoHgBEVAwHxUSIzRqU=
@@ -188,8 +193,9 @@ github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINE
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRIccs7FGNTlIRMkT8wgtp5eCXdBlqhYGL6U=
+github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
 github.com/prometheus/client_golang v1.0.0/go.mod h1:db9x61etRT2tGnBNRi70OPL5FsnadC4Ky3P0J6CfImo=
 github.com/prometheus/client_golang v1.7.1/go.mod h1:PY5Wy2awLA44sXw4AOSfFBetzPP4j5+D6mVACh+pe2M=
@@ -215,10 +221,10 @@ github.com/prometheus/procfs v0.1.3/go.mod h1:lV6e/gmhEcM9IjHGsFOCxxuZ+z1YqCvr4O
 github.com/prometheus/procfs v0.6.0/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1xBZuNvfVA=
 github.com/prometheus/procfs v0.11.1 h1:xRC8Iq1yyca5ypa9n1EZnWZkt7dwcoRPQwX/5gwaUuI=
 github.com/prometheus/procfs v0.11.1/go.mod h1:eesXgaPo1q7lBpVMoMy0ZOFTth9hBn4W/y0/p/ScXhY=
-github.com/prometheus/prometheus v0.45.0 h1:O/uG+Nw4kNxx/jDPxmjsSDd+9Ohql6E7ZSY1x5x/0KI=
+github.com/prometheus/prometheus v0.47.2 h1:jWcnuQHz1o1Wu3MZ6nMJDuTI0kU5yJp9pkxh8XEkNvI=
-github.com/prometheus/prometheus v0.45.0/go.mod h1:jC5hyO8ItJBnDWGecbEucMyXjzxGv9cxsxsjS9u5s1w=
+github.com/prometheus/prometheus v0.47.2/go.mod h1:J/bmOSjgH7lFxz2gZhrWEZs2i64vMS+HIuZfmYNhJ/M=
 github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
-github.com/scaleway/scaleway-sdk-go v1.0.0-beta.17 h1:1WuWJu7/e8SqK+uQl7lfk/N/oMZTL2NE/TJsNKRNMc4=
+github.com/scaleway/scaleway-sdk-go v1.0.0-beta.20 h1:a9hSJdJcd16e0HoMsnFvaHvxB3pxSD+SC7+CISp7xY0=
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
 github.com/sirupsen/logrus v1.6.0/go.mod h1:7uNnSEd1DgxDLC74fIahvMZmmYsHGZGEOFrfsX/uA88=
@@ -238,6 +244,10 @@ github.com/xhit/go-str2duration/v2 v2.1.0/go.mod h1:ohY8p+0f07DiV6Em5LKB0s2YpLtX
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+go.opentelemetry.io/collector/pdata v1.0.0-rcv0014 h1:iT5qH0NLmkGeIdDtnBogYDx7L58t6CaWGL378DEo2QY=
+go.opentelemetry.io/collector/pdata v1.0.0-rcv0014/go.mod h1:BRvDrx43kiSoUx3mr7SoA7h9B8+OY99mUK+CZSQFWW4=
+go.opentelemetry.io/collector/semconv v0.81.0 h1:lCYNNo3powDvFIaTPP2jDKIrBiV1T92NK4QgL/aHYXw=
+go.opentelemetry.io/collector/semconv v0.81.0/go.mod h1:TlYPtzvsXyHOgr5eATi43qEMqwSmIziivJB2uctKswo=
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.42.0 h1:pginetY7+onl4qN1vl0xW/V/v6OBZ0vVdH+esuJgvmM=
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.42.0/go.mod h1:XiYsayHc36K3EByOO6nbAXnAWbrUxdjUROCEeeROOH8=
 go.opentelemetry.io/otel v1.16.0 h1:Z7GVAX/UkAXPKsy94IU+i6thsQS4nb7LviLpnaNeW8s=
@@ -249,20 +259,21 @@ go.opentelemetry.io/otel/trace v1.16.0/go.mod h1:Yt9vYq1SdNz3xdjZZK7wcXv1qv2pwLk
 go.uber.org/atomic v1.11.0 h1:ZvwS0R+56ePWxUNi+Atn9dWONBPp/AUETXlHW0DxSjE=
 go.uber.org/atomic v1.11.0/go.mod h1:LUxbIzbOniOlMKjJjyPfpl4v+PKK2cNJn91OQbhoJI0=
 go.uber.org/goleak v1.2.1 h1:NBol2c7O1ZokfZ0LEU9K6Whx/KnwvepVetCUhtKja4A=
-go.uber.org/goleak v1.2.1/go.mod h1:qlT2yGI9QafXHhZZLxlSuNsMw3FFLxBr+tBRlmO1xH4=
+go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
+go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/crypto v0.8.0 h1:pd9TJtTueMTVQXzk8E2XESSMQDj/U7OUu0PqJqPXQjQ=
+golang.org/x/crypto v0.11.0 h1:6Ewdq3tDic1mg5xRO4milcWCfMVQhI4NkqWWvqejpuA=
-golang.org/x/crypto v0.8.0/go.mod h1:mRqEX+O9/h5TFCrQhkgjo2yKi0yYA+9ecGkdQoHrywE=
+golang.org/x/crypto v0.11.0/go.mod h1:xgJhtzW8F9jGdVFWZESrid1U1bjeNy4zgy5cRr/CIio=
-golang.org/x/exp v0.0.0-20230522175609-2e198f4a06a1 h1:k/i9J1pBpvlfR+9QsetwPyERsqu1GIbi967PQMq3Ivc=
+golang.org/x/exp v0.0.0-20230713183714-613f0c0eb8a1 h1:MGwJjxBy0HJshjDNfLsYO8xppfqWlA5ZT9OhtUUhTNw=
-golang.org/x/exp v0.0.0-20230522175609-2e198f4a06a1/go.mod h1:V1LtkGg67GoY2N1AnLN78QLrzxkLyJw7RJb1gzOOz9w=
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 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
-golang.org/x/mod v0.10.0 h1:lFO9qtOdlre5W1jxS3r/4szv2/6iXxScdzjoBMXNhYk=
+golang.org/x/mod v0.12.0 h1:rmsUpXtvNzj340zd98LZ4KntptpfRHwpFOHG188oHXc=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -279,12 +290,12 @@ golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v
 golang.org/x/net v0.0.0-20210525063256-abc453219eb5/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/net v0.1.0/go.mod h1:Cx3nUiGt4eDBEyega/BKRp+/AlGL8hYe7U9odMt2Cco=
-golang.org/x/net v0.10.0 h1:X2//UzNDwYmtCLn7To6G58Wr6f5ahEAQgKNzv9Y951M=
+golang.org/x/net v0.12.0 h1:cfawfvKITfUsFCeJIHJrbSxpeu/E81khclypR0GVT50=
-golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
+golang.org/x/net v0.12.0/go.mod h1:zEVYFnQC7m/vmpQFELhcD1EWkZlX69l4oqgmer6hfKA=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20210514164344-f6687ab2804c/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
-golang.org/x/oauth2 v0.8.0 h1:6dkIjl3j3LtZ/O3sTgZTMsLKSftL/B8Zgq4huOIIUu8=
+golang.org/x/oauth2 v0.10.0 h1:zHCpF2Khkwy4mMB4bv0U37YtJdTGW8jI0glAApi0Kh8=
-golang.org/x/oauth2 v0.8.0/go.mod h1:yr7u4HXZRm1R1kBWqr/xKNqewf0plRYoB7sla+BCIXE=
+golang.org/x/oauth2 v0.10.0/go.mod h1:kTpgurOux7LqtuxjuyZa4Gj2gdezIt/jQtGnNFfypQI=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -317,15 +328,15 @@ golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.1.0/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
-golang.org/x/term v0.8.0 h1:n5xxQn2i3PC0yLAbjTpNT85q/Kgzcr2gIoX9OrJUols=
+golang.org/x/term v0.10.0 h1:3R7pNqamzBraeqj/Tj8qt1aQ2HpmlC+Cx/qL/7hn4/c=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
-golang.org/x/text v0.9.0 h1:2sjJmO8cDvYveuX97RDLsxlyUxLl+GHoLxBiRdHllBE=
+golang.org/x/text v0.11.0 h1:LAntKIrcmeSKERyiOh0XMV39LXS8IE9UL2yP7+f5ij4=
-golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
+golang.org/x/text v0.11.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/time v0.3.0 h1:rg5rLMjNzMS1RkNLzCG38eapWhnYLFYXDXj2gOlr8j4=
 golang.org/x/time v0.3.0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
@@ -333,7 +344,7 @@ golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
-golang.org/x/tools v0.9.3 h1:Gn1I8+64MsuTb/HpH+LmQtNas23LhUVr3rYZ0eKuaMM=
+golang.org/x/tools v0.11.0 h1:EMCa6U9S2LtZXLAMoWiR/R8dAQFRqbAitmbJ2UKhoi8=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -342,8 +353,12 @@ google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7
 google.golang.org/appengine v1.6.6/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
 google.golang.org/appengine v1.6.7 h1:FZR1q0exgwxzPzp/aF+VccGrSfxfPpkBqjIIEq3ru6c=
 google.golang.org/appengine v1.6.7/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
-google.golang.org/genproto v0.0.0-20230320184635-7606e756e683 h1:khxVcsk/FhnzxMKOyD+TDGwjbEOpcPuIpmafPGFmhMA=
+google.golang.org/genproto v0.0.0-20230717213848-3f92550aa753 h1:+VoAg+OKmWaommL56xmZSE2sUK8A7m6SUO7X89F2tbw=
-google.golang.org/grpc v1.55.0 h1:3Oj82/tFSCeUrRTg/5E/7d/W5A1tj6Ky1ABAuZuv5ag=
+google.golang.org/genproto/googleapis/api v0.0.0-20230717213848-3f92550aa753 h1:lCbbUxUDD+DiXx9Q6F/ttL0aAu7N2pz8XnmMm8ZW4NE=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20230717213848-3f92550aa753 h1:XUODHrpzJEUeWmVo/jfNTLj0YyVveOo28oE6vkFbkO4=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20230717213848-3f92550aa753/go.mod h1:TUfxEVdsvPg18p6AslUXFoLdpED4oBnGwyqk3dV1XzM=
+google.golang.org/grpc v1.56.2 h1:fVRFRnXvU+x6C4IlHZewvJOVHoOv1TUuQyoRsYnB4bI=
+google.golang.org/grpc v1.56.2/go.mod h1:I9bI3vqKfayGqPUAwGdOSu7kt6oIJLixfffKrpXqQ9s=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -371,13 +386,13 @@ gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-k8s.io/api v0.26.2 h1:dM3cinp3PGB6asOySalOZxEG4CZ0IAdJsrYZXE/ovGQ=
+k8s.io/api v0.27.3 h1:yR6oQXXnUEBWEWcvPWS0jQL575KoAboQPfJAuKNrw5Y=
-k8s.io/apimachinery v0.26.2 h1:da1u3D5wfR5u2RpLhE/ZtZS2P7QvDgLZTi9wrNZl/tQ=
+k8s.io/apimachinery v0.27.3 h1:Ubye8oBufD04l9QnNtW05idcOe9Z3GQN8+7PqmuVcUM=
-k8s.io/client-go v0.26.2 h1:s1WkVujHX3kTp4Zn4yGNFK+dlDXy1bAAkIl+cFAiuYI=
+k8s.io/client-go v0.27.3 h1:7dnEGHZEJld3lYwxvLl7WoehK6lAq7GvgjxpA3nv1E8=
 k8s.io/klog v1.0.0 h1:Pt+yjF5aB1xDSVbau4VsWe+dQNzA0qv1LlXdC2dF6Q8=
 k8s.io/klog/v2 v2.100.1 h1:7WCHKK6K8fNhTqfBhISHQ97KrnJNFZMcQvKp7gP/tmg=
-k8s.io/kube-openapi v0.0.0-20230501164219-8b0f38b5fd1f h1:2kWPakN3i/k81b0gvD5C5FJ2kxm1WrQFanWchyKuqGg=
+k8s.io/kube-openapi v0.0.0-20230525220651-2546d827e515 h1:OmK1d0WrkD3IPfkskvroRykOulHVHf0s0ZIFRjyt+UI=
-k8s.io/utils v0.0.0-20230308161112-d77c459e9343 h1:m7tbIjXGcGIAtpmQr7/NAi7RsWoW3E7Zcm4jI1HicTc=
+k8s.io/utils v0.0.0-20230711102312-30195339c3c7 h1:ZgnF1KZsYxWIifwSNZFZgNtWE89WI5yiP5WwlfDoIyc=
 sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd h1:EDPBXCAspyGV4jQlpZSudPeMmr1bNJefnuqLsRAsHZo=
-sigs.k8s.io/structured-merge-diff/v4 v4.2.3 h1:PRbqxJClWWYMNV1dhaG4NsibJbArud9kFxnAMREiWFE=
+sigs.k8s.io/structured-merge-diff/v4 v4.3.0 h1:UZbZAZfX0wV2zr7YZorDz6GXROfDFj6LvqCRm4VUVKk=
 sigs.k8s.io/yaml v1.3.0 h1:a2VclLzOGrwOHDiV8EfBGhvjHvP46CtW5j6POvhYGGo=

go.mod

@@ -3,18 +3,17 @@ module github.com/prometheus/prometheus
 go 1.20
 
 require (
-	github.com/Azure/azure-sdk-for-go v65.0.0+incompatible
+	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.8.0
-	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.7.0
+	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.4.0
-	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.3.0
+	github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/compute/armcompute/v4 v4.2.1
-	github.com/Azure/go-autorest/autorest v0.11.29
+	github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/network/armnetwork/v2 v2.2.1
-	github.com/Azure/go-autorest/autorest/adal v0.9.23
 	github.com/alecthomas/kingpin/v2 v2.3.2
 	github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137
-	github.com/aws/aws-sdk-go v1.44.317
+	github.com/aws/aws-sdk-go v1.45.25
 	github.com/cespare/xxhash/v2 v2.2.0
 	github.com/dennwc/varint v1.0.0
-	github.com/digitalocean/godo v1.99.0
+	github.com/digitalocean/godo v1.104.1
-	github.com/docker/docker v24.0.4+incompatible
+	github.com/docker/docker v24.0.6+incompatible
 	github.com/edsrzf/mmap-go v1.1.0
 	github.com/envoyproxy/go-control-plane v0.11.1
 	github.com/envoyproxy/protoc-gen-validate v1.0.2
@@ -25,92 +24,91 @@ require (
 	github.com/go-zookeeper/zk v1.0.3
 	github.com/gogo/protobuf v1.3.2
 	github.com/golang/snappy v0.0.4
-	github.com/google/pprof v0.0.0-20230705174524-200ffdc848b8
+	github.com/google/pprof v0.0.0-20230926050212-f7f687d19a98
-	github.com/gophercloud/gophercloud v1.5.0
+	github.com/google/uuid v1.3.1
+	github.com/gophercloud/gophercloud v1.7.0
 	github.com/grafana/regexp v0.0.0-20221122212121-6b5c0a4cb7fd
 	github.com/grpc-ecosystem/grpc-gateway v1.16.0
 	github.com/hashicorp/consul/api v1.25.1
-	github.com/hashicorp/nomad/api v0.0.0-20230718173136-3a687930bd3e
+	github.com/hashicorp/nomad/api v0.0.0-20230721134942-515895c7690c
-	github.com/hetznercloud/hcloud-go/v2 v2.0.0
+	github.com/hetznercloud/hcloud-go/v2 v2.4.0
-	github.com/ionos-cloud/sdk-go/v6 v6.1.8
+	github.com/ionos-cloud/sdk-go/v6 v6.1.9
 	github.com/json-iterator/go v1.1.12
-	github.com/klauspost/compress v1.16.7
+	github.com/klauspost/compress v1.17.1
 	github.com/kolo/xmlrpc v0.0.0-20220921171641-a4b6fa1dd06b
-	github.com/linode/linodego v1.19.0
+	github.com/linode/linodego v1.23.0
-	github.com/miekg/dns v1.1.55
+	github.com/miekg/dns v1.1.56
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822
 	github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f
 	github.com/oklog/run v1.1.0
 	github.com/oklog/ulid v1.3.1
-	github.com/ovh/go-ovh v1.4.1
+	github.com/ovh/go-ovh v1.4.3
 	github.com/pkg/errors v0.9.1
 	github.com/prometheus/alertmanager v0.26.0
-	github.com/prometheus/client_golang v1.16.0
+	github.com/prometheus/client_golang v1.17.0
-	github.com/prometheus/client_model v0.4.0
+	github.com/prometheus/client_model v0.5.0
-	github.com/prometheus/common v0.44.0
+	github.com/prometheus/common v0.45.0
 	github.com/prometheus/common/assets v0.2.0
 	github.com/prometheus/common/sigv4 v0.1.0
 	github.com/prometheus/exporter-toolkit v0.10.0
-	github.com/scaleway/scaleway-sdk-go v1.0.0-beta.20
+	github.com/scaleway/scaleway-sdk-go v1.0.0-beta.21
 	github.com/shurcooL/httpfs v0.0.0-20230704072500-f1e31cf0ba5c
 	github.com/stretchr/testify v1.8.4
 	github.com/vultr/govultr/v2 v2.17.2
-	go.opentelemetry.io/collector/pdata v1.0.0-rcv0014
+	go.opentelemetry.io/collector/pdata v1.0.0-rcv0016
-	go.opentelemetry.io/collector/semconv v0.81.0
+	go.opentelemetry.io/collector/semconv v0.87.0
-	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.42.0
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.45.0
-	go.opentelemetry.io/otel v1.16.0
+	go.opentelemetry.io/otel v1.19.0
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.16.0
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.19.0
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.16.0
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.19.0
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.16.0
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.19.0
-	go.opentelemetry.io/otel/sdk v1.16.0
+	go.opentelemetry.io/otel/sdk v1.19.0
-	go.opentelemetry.io/otel/trace v1.16.0
+	go.opentelemetry.io/otel/trace v1.19.0
 	go.uber.org/atomic v1.11.0
-	go.uber.org/automaxprocs v1.5.2
+	go.uber.org/automaxprocs v1.5.3
 	go.uber.org/goleak v1.2.1
 	go.uber.org/multierr v1.11.0
-	golang.org/x/net v0.13.0
+	golang.org/x/exp v0.0.0-20231006140011-7918f672742d
-	golang.org/x/oauth2 v0.10.0
+	golang.org/x/net v0.17.0
-	golang.org/x/sync v0.3.0
+	golang.org/x/oauth2 v0.13.0
-	golang.org/x/sys v0.10.0
+	golang.org/x/sync v0.4.0
+	golang.org/x/sys v0.13.0
 	golang.org/x/time v0.3.0
-	golang.org/x/tools v0.11.0
+	golang.org/x/tools v0.14.0
-	google.golang.org/api v0.132.0
+	google.golang.org/api v0.147.0
-	google.golang.org/genproto/googleapis/api v0.0.0-20230717213848-3f92550aa753
+	google.golang.org/genproto/googleapis/api v0.0.0-20231012201019-e917dd12ba7a
-	google.golang.org/grpc v1.56.2
+	google.golang.org/grpc v1.58.3
 	google.golang.org/protobuf v1.31.0
 	gopkg.in/yaml.v2 v2.4.0
 	gopkg.in/yaml.v3 v3.0.1
-	k8s.io/api v0.28.1
+	k8s.io/api v0.28.2
-	k8s.io/apimachinery v0.28.1
+	k8s.io/apimachinery v0.28.2
-	k8s.io/client-go v0.28.1
+	k8s.io/client-go v0.28.2
 	k8s.io/klog v1.0.0
 	k8s.io/klog/v2 v2.100.1
 )
 
 require (
+	cloud.google.com/go/compute v1.23.0 // indirect
 	cloud.google.com/go/compute/metadata v0.2.3 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/internal v1.3.0 // indirect
-	github.com/AzureAD/microsoft-authentication-library-for-go v1.0.0 // indirect
+	github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/network/armnetwork v1.1.0 // indirect
+	github.com/AzureAD/microsoft-authentication-library-for-go v1.1.1 // indirect
 	github.com/coreos/go-systemd/v22 v22.5.0 // indirect
+	github.com/golang-jwt/jwt/v5 v5.0.0 // indirect
 	github.com/google/gnostic-models v0.6.8 // indirect
-	github.com/google/s2a-go v0.1.4 // indirect
+	github.com/google/s2a-go v0.1.7 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/hashicorp/go-multierror v1.1.1 // indirect
 	github.com/kylelemons/godebug v1.1.0 // indirect
 	github.com/pkg/browser v0.0.0-20210911075715-681adbf594b8 // indirect
 	github.com/stretchr/objx v0.5.0 // indirect
 	github.com/xhit/go-str2duration/v2 v2.1.0 // indirect
-	google.golang.org/genproto v0.0.0-20230717213848-3f92550aa753 // indirect
+	google.golang.org/genproto v0.0.0-20231002182017-d307bd883b97 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20230717213848-3f92550aa753 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20231009173412-8bfb1ae86b6c // indirect
 )
 
 require (
-	cloud.google.com/go/compute v1.22.0 // indirect
-	github.com/Azure/go-autorest v14.2.0+incompatible // indirect
-	github.com/Azure/go-autorest/autorest/date v0.3.0 // indirect
-	github.com/Azure/go-autorest/autorest/to v0.4.0 // indirect
-	github.com/Azure/go-autorest/autorest/validation v0.3.1 // indirect
-	github.com/Azure/go-autorest/logger v0.2.1 // indirect
-	github.com/Azure/go-autorest/tracing v0.6.0 // indirect
 	github.com/Microsoft/go-winio v0.6.1 // indirect
 	github.com/armon/go-metrics v0.4.1 // indirect
 	github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 // indirect
@@ -138,15 +136,13 @@ require (
 	github.com/go-openapi/swag v0.22.4 // indirect
 	github.com/go-openapi/validate v0.22.1 // indirect
 	github.com/go-resty/resty/v2 v2.7.0 // indirect
-	github.com/golang-jwt/jwt/v4 v4.5.0 // indirect
 	github.com/golang/glog v1.1.0 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
-	github.com/google/go-cmp v0.5.9 // indirect
+	github.com/google/go-cmp v0.6.0 // indirect
 	github.com/google/go-querystring v1.1.0 // indirect
 	github.com/google/gofuzz v1.2.0 // indirect
-	github.com/google/uuid v1.3.0
+	github.com/googleapis/enterprise-certificate-proxy v0.3.1 // indirect
-	github.com/googleapis/enterprise-certificate-proxy v0.2.5 // indirect
 	github.com/googleapis/gax-go/v2 v2.12.0 // indirect
 	github.com/gorilla/websocket v1.5.0 // indirect
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.16.0 // indirect
@@ -166,29 +162,26 @@ require (
 	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.19 // indirect
-	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
+	github.com/matttproud/golang_protobuf_extensions/v2 v2.0.0 // indirect
 	github.com/mitchellh/go-homedir v1.1.0 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/moby/term v0.0.0-20210619224110-3f7ff695adc6 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/morikuni/aec v1.0.0 // indirect
-	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.0.2 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
-	github.com/prometheus/procfs v0.11.0 // indirect
+	github.com/prometheus/procfs v0.11.1 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	go.mongodb.org/mongo-driver v1.12.0 // indirect
 	go.opencensus.io v0.24.0 // indirect
-	go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.16.0 // indirect
+	go.opentelemetry.io/otel/metric v1.19.0 // indirect
-	go.opentelemetry.io/otel/metric v1.16.0 // indirect
 	go.opentelemetry.io/proto/otlp v1.0.0 // indirect
-	golang.org/x/crypto v0.11.0 // indirect
+	golang.org/x/crypto v0.14.0 // indirect
-	golang.org/x/exp v0.0.0-20230801115018-d63ba01acd4b
+	golang.org/x/mod v0.13.0 // indirect
-	golang.org/x/mod v0.12.0 // indirect
+	golang.org/x/term v0.13.0 // indirect
-	golang.org/x/term v0.10.0 // indirect
+	golang.org/x/text v0.13.0 // indirect
-	golang.org/x/text v0.11.0 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect

go.sum

@@ -18,8 +18,8 @@ cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvf
 cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
 cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
 cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
-cloud.google.com/go/compute v1.22.0 h1:cB8R6FtUtT1TYGl5R3xuxnW6OUIc/DrT2aiR16TTG7Y=
+cloud.google.com/go/compute v1.23.0 h1:tP41Zoavr8ptEqaW6j+LQOnyBBhO7OkOMAGrgLopTwY=
-cloud.google.com/go/compute v1.22.0/go.mod h1:4tCnrn48xsqlwSAiLf1HXMQk8CONslYbdiEZc9FEIbM=
+cloud.google.com/go/compute v1.23.0/go.mod h1:4tCnrn48xsqlwSAiLf1HXMQk8CONslYbdiEZc9FEIbM=
 cloud.google.com/go/compute/metadata v0.2.3 h1:mg4jlk7mCAj6xXp9UJ4fjI9VUI5rubuGBW5aJ7UnBMY=
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@@ -34,38 +34,24 @@ cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohl
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@@ -103,8 +89,8 @@ github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2/go.mod h1:W
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@@ -127,11 +113,6 @@ github.com/circonus-labs/circonusllhist v0.1.3/go.mod h1:kMXHVDlOchFAehlya5ePtbp
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@@ -152,13 +133,13 @@ github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8Yc
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@@ -176,8 +157,6 @@ github.com/envoyproxy/go-control-plane v0.6.9/go.mod h1:SBwIajubJHhxtWwsL9s8ss4s
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@@ -295,9 +274,8 @@ github.com/gogo/protobuf v1.2.0/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7a
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@@ -329,7 +307,6 @@ github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QD
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@@ -352,8 +329,9 @@ github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
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@@ -368,24 +346,24 @@ github.com/google/pprof v0.0.0-20200212024743-f11f1df84d12/go.mod h1:ZgVRPoUq/hf
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@@ -453,13 +431,13 @@ github.com/hashicorp/mdns v1.0.4/go.mod h1:mtBihi+LeNXGtG8L9dX59gAEa12BDtBQSp4v/
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@@ -467,8 +445,8 @@ github.com/imdario/mergo v0.3.16 h1:wwQJbIsHYGMUyLSPrEq1CT16AhnhNJQ51+4fdHUnCl4=
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@@ -501,8 +479,8 @@ github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvW
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@@ -520,8 +498,8 @@ github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0
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@@ -548,14 +526,14 @@ github.com/mattn/go-isatty v0.0.19 h1:JITubQf0MOLdlGRuRq+jtsDlekdYPia9ZFsB8h/APP
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@@ -622,8 +600,8 @@ github.com/openzipkin-contrib/zipkin-go-opentracing v0.4.5/go.mod h1:/wsWhb9smxS
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@@ -655,16 +633,16 @@ github.com/prometheus/client_golang v1.3.0/go.mod h1:hJaj2vgQTGQmVCsAACORcieXFeD
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@@ -672,8 +650,8 @@ github.com/prometheus/common v0.9.1/go.mod h1:yhUN8i9wzaXS3w1O07YhxHEBxD+W35wd8b
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@@ -686,8 +664,8 @@ github.com/prometheus/procfs v0.0.2/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsT
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@@ -698,8 +676,8 @@ github.com/rogpeppe/go-internal v1.11.0 h1:cWPaGQEPrBb5/AsnsZesgZZ9yb1OQ+GOISoDN
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@@ -735,14 +713,12 @@ github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpE
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@@ -784,37 +760,34 @@ go.opencensus.io v0.22.3/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
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@@ -836,13 +809,10 @@ golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20200302210943-78000ba7a073/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
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-golang.org/x/crypto v0.6.0/go.mod h1:OFC/31mSvZgRz0V1QTNCzfAI1aIRzbiufJtkMIlEp58=
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-golang.org/x/crypto v0.11.0 h1:6Ewdq3tDic1mg5xRO4milcWCfMVQhI4NkqWWvqejpuA=
+golang.org/x/crypto v0.14.0/go.mod h1:MVFd36DqK4CsrnJYDkBA3VC4m2GkXAM0PvzMCn4JQf4=
-golang.org/x/crypto v0.11.0/go.mod h1:xgJhtzW8F9jGdVFWZESrid1U1bjeNy4zgy5cRr/CIio=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@@ -853,8 +823,8 @@ golang.org/x/exp v0.0.0-20191227195350-da58074b4299/go.mod h1:2RIsYlXP63K8oxa1u0
 golang.org/x/exp v0.0.0-20200119233911-0405dc783f0a/go.mod h1:2RIsYlXP63K8oxa1u096TMicItID8zy7Y6sNkU49FU4=
 golang.org/x/exp v0.0.0-20200207192155-f17229e696bd/go.mod h1:J/WKrq2StrnmMY6+EHIKF9dgMWnmCNThgcyBT1FY9mM=
 golang.org/x/exp v0.0.0-20200224162631-6cc2880d07d6/go.mod h1:3jZMyOhIsHpP37uCMkUooju7aAi5cS1Q23tOzKc+0MU=
-golang.org/x/exp v0.0.0-20230801115018-d63ba01acd4b h1:r+vk0EmXNmekl0S0BascoeeoHk/L7wmaW2QF90K+kYI=
+golang.org/x/exp v0.0.0-20231006140011-7918f672742d h1:jtJma62tbqLibJ5sFQz8bKtEM8rJBtfilJ2qTU199MI=
-golang.org/x/exp v0.0.0-20230801115018-d63ba01acd4b/go.mod h1:FXUEEKJgO7OQYeo8N01OfiKP8RXMtf6e8aTskBGqWdc=
+golang.org/x/exp v0.0.0-20231006140011-7918f672742d/go.mod h1:ldy0pHrwJyGW56pPQzzkH36rKxoZW1tw7ZJpeKx+hdo=
 golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
 golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
@@ -876,8 +846,8 @@ golang.org/x/mod v0.1.1-0.20191107180719-034126e5016b/go.mod h1:QqPTAvyqsEbceGzB
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
-golang.org/x/mod v0.12.0 h1:rmsUpXtvNzj340zd98LZ4KntptpfRHwpFOHG188oHXc=
+golang.org/x/mod v0.13.0 h1:I/DsJXRlw/8l/0c24sM9yb0T4z9liZTduXvdAWYiysY=
-golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/mod v0.13.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -922,17 +892,16 @@ golang.org/x/net v0.0.0-20211029224645-99673261e6eb/go.mod h1:9nx3DQGgdP8bBQD5qx
 golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/net v0.1.0/go.mod h1:Cx3nUiGt4eDBEyega/BKRp+/AlGL8hYe7U9odMt2Cco=
-golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+golang.org/x/net v0.17.0 h1:pVaXccu2ozPjCXewfr1S7xza/zcXTity9cCdXQYSjIM=
-golang.org/x/net v0.13.0 h1:Nvo8UFsZ8X3BhAC9699Z1j7XQ3rsZnUUm7jfBEk1ueY=
+golang.org/x/net v0.17.0/go.mod h1:NxSsAGuq816PNPmqtQdLE42eU2Fs7NoRIZrHJAlaCOE=
-golang.org/x/net v0.13.0/go.mod h1:zEVYFnQC7m/vmpQFELhcD1EWkZlX69l4oqgmer6hfKA=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20191202225959-858c2ad4c8b6/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20210514164344-f6687ab2804c/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
-golang.org/x/oauth2 v0.10.0 h1:zHCpF2Khkwy4mMB4bv0U37YtJdTGW8jI0glAApi0Kh8=
+golang.org/x/oauth2 v0.13.0 h1:jDDenyj+WgFtmV3zYVoi8aE2BwtXFLWOA67ZfNWftiY=
-golang.org/x/oauth2 v0.10.0/go.mod h1:kTpgurOux7LqtuxjuyZa4Gj2gdezIt/jQtGnNFfypQI=
+golang.org/x/oauth2 v0.13.0/go.mod h1:/JMhi4ZRXAf4HG9LiNmxvk+45+96RUlVThiH8FzNBn0=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -946,8 +915,8 @@ golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.3.0 h1:ftCYgMx6zT/asHUrPw8BLLscYtGznsLAnjq5RH9P66E=
+golang.org/x/sync v0.4.0 h1:zxkM55ReGkDlKSM+Fu41A+zmbZuaPVbGMzvvdUPznYQ=
-golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
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 golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -1013,16 +982,14 @@ golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220908164124-27713097b956/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.10.0 h1:SqMFp9UcQJZa+pmYuAKjd9xq1f0j5rLcDIk0mj4qAsA=
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-golang.org/x/sys v0.10.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.1.0/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
-golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
+golang.org/x/term v0.13.0 h1:bb+I9cTfFazGW51MZqBVmZy7+JEJMouUHTUSKVQLBek=
-golang.org/x/term v0.10.0 h1:3R7pNqamzBraeqj/Tj8qt1aQ2HpmlC+Cx/qL/7hn4/c=
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-golang.org/x/term v0.10.0/go.mod h1:lpqdcUyK/oCiQxvxVrppt5ggO2KCZ5QblwqPnfZ6d5o=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
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 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -1034,8 +1001,8 @@ golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
 golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
-golang.org/x/text v0.11.0 h1:LAntKIrcmeSKERyiOh0XMV39LXS8IE9UL2yP7+f5ij4=
+golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
-golang.org/x/text v0.11.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
+golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
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@@ -1095,8 +1062,8 @@ golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roY
 golang.org/x/tools v0.0.0-20200825202427-b303f430e36d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
-golang.org/x/tools v0.11.0 h1:EMCa6U9S2LtZXLAMoWiR/R8dAQFRqbAitmbJ2UKhoi8=
+golang.org/x/tools v0.14.0 h1:jvNa2pY0M4r62jkRQ6RwEZZyPcymeL9XZMLBbV7U2nc=
-golang.org/x/tools v0.11.0/go.mod h1:anzJrxPjNtfgiYQYirP2CPGzGLxrH2u2QBhn6Bf3qY8=
+golang.org/x/tools v0.14.0/go.mod h1:uYBEerGOWcJyEORxN+Ek8+TT266gXkNlHdJBwexUsBg=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -1116,8 +1083,8 @@ google.golang.org/api v0.20.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/
 google.golang.org/api v0.22.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE=
 google.golang.org/api v0.24.0/go.mod h1:lIXQywCXRcnZPGlsd8NbLnOjtAoL6em04bJ9+z0MncE=
 google.golang.org/api v0.28.0/go.mod h1:lIXQywCXRcnZPGlsd8NbLnOjtAoL6em04bJ9+z0MncE=
-google.golang.org/api v0.132.0 h1:8t2/+qZ26kAOGSmOiHwVycqVaDg7q3JDILrNi/Z6rvc=
+google.golang.org/api v0.147.0 h1:Can3FaQo9LlVqxJCodNmeZW/ib3/qKAY3rFeXiHo5gc=
-google.golang.org/api v0.132.0/go.mod h1:AeTBC6GpJnJSRJjktDcPX0QwtS8pGYZOV6MSuSCusw0=
+google.golang.org/api v0.147.0/go.mod h1:pQ/9j83DcmPd/5C9e2nFOdjjNkDZ1G+zkbK2uvdkJMs=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.2.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
@@ -1156,12 +1123,12 @@ google.golang.org/genproto v0.0.0-20200515170657-fc4c6c6a6587/go.mod h1:YsZOwe1m
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
 google.golang.org/genproto v0.0.0-20200618031413-b414f8b61790/go.mod h1:jDfRM7FcilCzHH/e9qn6dsT145K34l5v+OpcnNgKAAA=
 google.golang.org/genproto v0.0.0-20200825200019-8632dd797987/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20230717213848-3f92550aa753 h1:+VoAg+OKmWaommL56xmZSE2sUK8A7m6SUO7X89F2tbw=
+google.golang.org/genproto v0.0.0-20231002182017-d307bd883b97 h1:SeZZZx0cP0fqUyA+oRzP9k7cSwJlvDFiROO72uwD6i0=
-google.golang.org/genproto v0.0.0-20230717213848-3f92550aa753/go.mod h1:iqkVr8IRpZ53gx1dEnWlCUIEwDWqWARWrbzpasaTNYM=
+google.golang.org/genproto v0.0.0-20231002182017-d307bd883b97/go.mod h1:t1VqOqqvce95G3hIDCT5FeO3YUc6Q4Oe24L/+rNMxRk=
-google.golang.org/genproto/googleapis/api v0.0.0-20230717213848-3f92550aa753 h1:lCbbUxUDD+DiXx9Q6F/ttL0aAu7N2pz8XnmMm8ZW4NE=
+google.golang.org/genproto/googleapis/api v0.0.0-20231012201019-e917dd12ba7a h1:myvhA4is3vrit1a6NZCWBIwN0kNEnX21DJOJX/NvIfI=
-google.golang.org/genproto/googleapis/api v0.0.0-20230717213848-3f92550aa753/go.mod h1:rsr7RhLuwsDKL7RmgDDCUc6yaGr1iqceVb5Wv6f6YvQ=
+google.golang.org/genproto/googleapis/api v0.0.0-20231012201019-e917dd12ba7a/go.mod h1:SUBoKXbI1Efip18FClrQVGjWcyd0QZd8KkvdP34t7ww=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20230717213848-3f92550aa753 h1:XUODHrpzJEUeWmVo/jfNTLj0YyVveOo28oE6vkFbkO4=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20231009173412-8bfb1ae86b6c h1:jHkCUWkseRf+W+edG5hMzr/Uh1xkDREY4caybAq4dpY=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20230717213848-3f92550aa753/go.mod h1:TUfxEVdsvPg18p6AslUXFoLdpED4oBnGwyqk3dV1XzM=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20231009173412-8bfb1ae86b6c/go.mod h1:4cYg8o5yUbm77w8ZX00LhMVNl/YVBFJRYWDc0uYWMs0=
 google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.0/go.mod h1:chYK+tFQF0nDUGJgXMSgLCQk3phJEuONr2DCgLDdAQM=
@@ -1180,10 +1147,8 @@ google.golang.org/grpc v1.29.1/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3Iji
 google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/grpc v1.33.1/go.mod h1:fr5YgcSWrqhRRxogOsw7RzIpsmvOZ6IcH4kBYTpR3n0=
 google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv2fbc=
-google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.58.3 h1:BjnpXut1btbtgN/6sp+brB2Kbm2LjNXnidYujAVbSoQ=
-google.golang.org/grpc v1.45.0/go.mod h1:lN7owxKUQEqMfSyQikvvk5tf/6zMPsrK+ONuO11+0rQ=
+google.golang.org/grpc v1.58.3/go.mod h1:tgX3ZQDlNJGU96V6yHh1T/JeoBQ2TXdr43YbYSsCJk0=
-google.golang.org/grpc v1.56.2 h1:fVRFRnXvU+x6C4IlHZewvJOVHoOv1TUuQyoRsYnB4bI=
-google.golang.org/grpc v1.56.2/go.mod h1:I9bI3vqKfayGqPUAwGdOSu7kt6oIJLixfffKrpXqQ9s=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -1243,12 +1208,12 @@ honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
-k8s.io/api v0.28.1 h1:i+0O8k2NPBCPYaMB+uCkseEbawEt/eFaiRqUx8aB108=
+k8s.io/api v0.28.2 h1:9mpl5mOb6vXZvqbQmankOfPIGiudghwCoLl1EYfUZbw=
-k8s.io/api v0.28.1/go.mod h1:uBYwID+66wiL28Kn2tBjBYQdEU0Xk0z5qF8bIBqk/Dg=
+k8s.io/api v0.28.2/go.mod h1:RVnJBsjU8tcMq7C3iaRSGMeaKt2TWEUXcpIt/90fjEg=
-k8s.io/apimachinery v0.28.1 h1:EJD40og3GizBSV3mkIoXQBsws32okPOy+MkRyzh6nPY=
+k8s.io/apimachinery v0.28.2 h1:KCOJLrc6gu+wV1BYgwik4AF4vXOlVJPdiqn0yAWWwXQ=
-k8s.io/apimachinery v0.28.1/go.mod h1:X0xh/chESs2hP9koe+SdIAcXWcQ+RM5hy0ZynB+yEvw=
+k8s.io/apimachinery v0.28.2/go.mod h1:RdzF87y/ngqk9H4z3EL2Rppv5jj95vGS/HaFXrLDApU=
-k8s.io/client-go v0.28.1 h1:pRhMzB8HyLfVwpngWKE8hDcXRqifh1ga2Z/PU9SXVK8=
+k8s.io/client-go v0.28.2 h1:DNoYI1vGq0slMBN/SWKMZMw0Rq+0EQW6/AK4v9+3VeY=
-k8s.io/client-go v0.28.1/go.mod h1:pEZA3FqOsVkCc07pFVzK076R+P/eXqsgx5zuuRWukNE=
+k8s.io/client-go v0.28.2/go.mod h1:sMkApowspLuc7omj1FOSUxSoqjr+d5Q0Yc0LOFnYFJY=
 k8s.io/kube-openapi v0.0.0-20230717233707-2695361300d9 h1:LyMgNKD2P8Wn1iAwQU5OhxCKlKJy0sHc+PcDwFB24dQ=
 k8s.io/kube-openapi v0.0.0-20230717233707-2695361300d9/go.mod h1:wZK2AVp1uHCp4VamDVgBP2COHZjqD1T68Rf0CM3YjSM=
 k8s.io/utils v0.0.0-20230711102312-30195339c3c7 h1:ZgnF1KZsYxWIifwSNZFZgNtWE89WI5yiP5WwlfDoIyc=

model/histogram/float_histogram.go

@@ -307,13 +307,17 @@ func (h *FloatHistogram) Sub(other *FloatHistogram) *FloatHistogram {
 // Exact match is when there are no new buckets (even empty) and no missing buckets,
 // and all the bucket values match. Spans can have different empty length spans in between,
 // but they must represent the same bucket layout to match.
+// Sum, Count, ZeroCount and bucket values are compared based on their bit patterns
+// because this method is about data equality rather than mathematical equality.
 func (h *FloatHistogram) Equals(h2 *FloatHistogram) bool {
 	if h2 == nil {
 		return false
 	}
 
 	if h.Schema != h2.Schema || h.ZeroThreshold != h2.ZeroThreshold ||
-		h.ZeroCount != h2.ZeroCount || h.Count != h2.Count || h.Sum != h2.Sum {
+		math.Float64bits(h.ZeroCount) != math.Float64bits(h2.ZeroCount) ||
+		math.Float64bits(h.Count) != math.Float64bits(h2.Count) ||
+		math.Float64bits(h.Sum) != math.Float64bits(h2.Sum) {
 		return false
 	}
 
@@ -324,16 +328,44 @@ func (h *FloatHistogram) Equals(h2 *FloatHistogram) bool {
 		return false
 	}
 
-	if !bucketsMatch(h.PositiveBuckets, h2.PositiveBuckets) {
+	if !floatBucketsMatch(h.PositiveBuckets, h2.PositiveBuckets) {
 		return false
 	}
-	if !bucketsMatch(h.NegativeBuckets, h2.NegativeBuckets) {
+	if !floatBucketsMatch(h.NegativeBuckets, h2.NegativeBuckets) {
 		return false
 	}
 
 	return true
 }
 
+// Size returns the total size of the FloatHistogram, which includes the size of the pointer
+// to FloatHistogram, all its fields, and all elements contained in slices.
+// NOTE: this is only valid for 64 bit architectures.
+func (fh *FloatHistogram) Size() int {
+	// Size of each slice separately.
+	posSpanSize := len(fh.PositiveSpans) * 8     // 8 bytes (int32 + uint32).
+	negSpanSize := len(fh.NegativeSpans) * 8     // 8 bytes (int32 + uint32).
+	posBucketSize := len(fh.PositiveBuckets) * 8 // 8 bytes (float64).
+	negBucketSize := len(fh.NegativeBuckets) * 8 // 8 bytes (float64).
+
+	// Total size of the struct.
+
+	// fh is 8 bytes.
+	// fh.CounterResetHint is 4 bytes (1 byte bool + 3 bytes padding).
+	// fh.Schema is 4 bytes.
+	// fh.ZeroThreshold is 8 bytes.
+	// fh.ZeroCount is 8 bytes.
+	// fh.Count is 8 bytes.
+	// fh.Sum is 8 bytes.
+	// fh.PositiveSpans is 24 bytes.
+	// fh.NegativeSpans is 24 bytes.
+	// fh.PositiveBuckets is 24 bytes.
+	// fh.NegativeBuckets is 24 bytes.
+	structSize := 144
+
+	return structSize + posSpanSize + negSpanSize + posBucketSize + negBucketSize
+}
+
 // Compact eliminates empty buckets at the beginning and end of each span, then
 // merges spans that are consecutive or at most maxEmptyBuckets apart, and
 // finally splits spans that contain more consecutive empty buckets than
@@ -1110,3 +1142,15 @@ func addBuckets(
 
 	return spansA, bucketsA
 }
+
+func floatBucketsMatch(b1, b2 []float64) bool {
+	if len(b1) != len(b2) {
+		return false
+	}
+	for i, b := range b1 {
+		if math.Float64bits(b) != math.Float64bits(b2[i]) {
+			return false
+		}
+	}
+	return true
+}

model/histogram/float_histogram_test.go

@@ -2293,6 +2293,108 @@ func TestFloatBucketIteratorTargetSchema(t *testing.T) {
 	require.False(t, it.Next(), "negative iterator not exhausted")
 }
 
+// TestFloatHistogramEquals tests FloatHistogram with float-specific cases that
+// cannot be covered by TestHistogramEquals.
+func TestFloatHistogramEquals(t *testing.T) {
+	h1 := FloatHistogram{
+		Schema:          3,
+		Count:           2.2,
+		Sum:             9.7,
+		ZeroThreshold:   0.1,
+		ZeroCount:       1.1,
+		PositiveBuckets: []float64{3},
+		NegativeBuckets: []float64{4},
+	}
+
+	equals := func(h1, h2 FloatHistogram) {
+		require.True(t, h1.Equals(&h2))
+		require.True(t, h2.Equals(&h1))
+	}
+	notEquals := func(h1, h2 FloatHistogram) {
+		require.False(t, h1.Equals(&h2))
+		require.False(t, h2.Equals(&h1))
+	}
+
+	h2 := h1.Copy()
+	equals(h1, *h2)
+
+	// Count is NaN (but not a StaleNaN).
+	hCountNaN := h1.Copy()
+	hCountNaN.Count = math.NaN()
+	notEquals(h1, *hCountNaN)
+	equals(*hCountNaN, *hCountNaN)
+
+	// ZeroCount is NaN (but not a StaleNaN).
+	hZeroCountNaN := h1.Copy()
+	hZeroCountNaN.ZeroCount = math.NaN()
+	notEquals(h1, *hZeroCountNaN)
+	equals(*hZeroCountNaN, *hZeroCountNaN)
+
+	// Positive bucket value is NaN.
+	hPosBucketNaN := h1.Copy()
+	hPosBucketNaN.PositiveBuckets[0] = math.NaN()
+	notEquals(h1, *hPosBucketNaN)
+	equals(*hPosBucketNaN, *hPosBucketNaN)
+
+	// Negative bucket value is NaN.
+	hNegBucketNaN := h1.Copy()
+	hNegBucketNaN.NegativeBuckets[0] = math.NaN()
+	notEquals(h1, *hNegBucketNaN)
+	equals(*hNegBucketNaN, *hNegBucketNaN)
+}
+
+func TestFloatHistogramSize(t *testing.T) {
+	cases := []struct {
+		name     string
+		fh       *FloatHistogram
+		expected int
+	}{
+		{
+			"without spans and buckets",
+			&FloatHistogram{ // 8 bytes.
+				CounterResetHint: 0,           // 1 byte.
+				Schema:           1,           // 4 bytes.
+				ZeroThreshold:    0.01,        // 8 bytes.
+				ZeroCount:        5.5,         // 8 bytes.
+				Count:            3493.3,      // 8 bytes.
+				Sum:              2349209.324, // 8 bytes.
+				PositiveSpans:    nil,         // 24 bytes.
+				PositiveBuckets:  nil,         // 24 bytes.
+				NegativeSpans:    nil,         // 24 bytes.
+				NegativeBuckets:  nil,         // 24 bytes.
+			},
+			8 + 4 + 4 + 8 + 8 + 8 + 8 + 24 + 24 + 24 + 24,
+		},
+		{
+			"complete struct",
+			&FloatHistogram{ // 8 bytes.
+				CounterResetHint: 0,           // 1 byte.
+				Schema:           1,           // 4 bytes.
+				ZeroThreshold:    0.01,        // 8 bytes.
+				ZeroCount:        5.5,         // 8 bytes.
+				Count:            3493.3,      // 8 bytes.
+				Sum:              2349209.324, // 8 bytes.
+				PositiveSpans: []Span{ // 24 bytes.
+					{-2, 1}, // 2 * 4 bytes.
+					{2, 3},  //  2 * 4 bytes.
+				},
+				PositiveBuckets: []float64{1, 3.3, 4.2, 0.1}, // 24 bytes + 4 * 8 bytes.
+				NegativeSpans: []Span{ // 24 bytes.
+					{3, 2},  // 2 * 4 bytes.
+					{3, 2}}, //  2 * 4 bytes.
+				NegativeBuckets: []float64{3.1, 3, 1.234e5, 1000}, // 24 bytes + 4 * 8 bytes.
+			},
+			8 + 4 + 4 + 8 + 8 + 8 + 8 + (24 + 2*4 + 2*4) + (24 + 2*4 + 2*4) + (24 + 4*8) + (24 + 4*8),
+		},
+	}
+
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			require.Equal(t, c.expected, c.fh.Size())
+		})
+	}
+}
+
 func BenchmarkFloatHistogramAllBucketIterator(b *testing.B) {
 	rng := rand.New(rand.NewSource(0))
 

model/histogram/generic.go

@@ -347,18 +347,6 @@ func compactBuckets[IBC InternalBucketCount](buckets []IBC, spans []Span, maxEmp
 	return buckets, spans
 }
 
-func bucketsMatch[IBC InternalBucketCount](b1, b2 []IBC) bool {
-	if len(b1) != len(b2) {
-		return false
-	}
-	for i, b := range b1 {
-		if b != b2[i] {
-			return false
-		}
-	}
-	return true
-}
-
 func getBound(idx, schema int32) float64 {
 	// Here a bit of context about the behavior for the last bucket counting
 	// regular numbers (called simply "last bucket" below) and the bucket

model/histogram/histogram.go

@@ -17,6 +17,8 @@ import (
 	"fmt"
 	"math"
 	"strings"
+
+	"golang.org/x/exp/slices"
 )
 
 // CounterResetHint contains the known information about a counter reset,
@@ -174,13 +176,16 @@ func (h *Histogram) CumulativeBucketIterator() BucketIterator[uint64] {
 // Exact match is when there are no new buckets (even empty) and no missing buckets,
 // and all the bucket values match. Spans can have different empty length spans in between,
 // but they must represent the same bucket layout to match.
+// Sum is compared based on its bit pattern because this method
+// is about data equality rather than mathematical equality.
 func (h *Histogram) Equals(h2 *Histogram) bool {
 	if h2 == nil {
 		return false
 	}
 
 	if h.Schema != h2.Schema || h.ZeroThreshold != h2.ZeroThreshold ||
-		h.ZeroCount != h2.ZeroCount || h.Count != h2.Count || h.Sum != h2.Sum {
+		h.ZeroCount != h2.ZeroCount || h.Count != h2.Count ||
+		math.Float64bits(h.Sum) != math.Float64bits(h2.Sum) {
 		return false
 	}
 
@@ -191,10 +196,10 @@ func (h *Histogram) Equals(h2 *Histogram) bool {
 		return false
 	}
 
-	if !bucketsMatch(h.PositiveBuckets, h2.PositiveBuckets) {
+	if !slices.Equal(h.PositiveBuckets, h2.PositiveBuckets) {
 		return false
 	}
-	if !bucketsMatch(h.NegativeBuckets, h2.NegativeBuckets) {
+	if !slices.Equal(h.NegativeBuckets, h2.NegativeBuckets) {
 		return false
 	}
 

model/histogram/histogram_test.go

@@ -19,6 +19,8 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/require"
+
+	"github.com/prometheus/prometheus/model/value"
 )
 
 func TestHistogramString(t *testing.T) {
@@ -411,8 +413,8 @@ func TestHistogramToFloat(t *testing.T) {
 	require.Equal(t, h.String(), fh.String())
 }
 
-// TestHistogramMatches tests both Histogram and FloatHistogram.
+// TestHistogramEquals tests both Histogram and FloatHistogram.
-func TestHistogramMatches(t *testing.T) {
+func TestHistogramEquals(t *testing.T) {
 	h1 := Histogram{
 		Schema:        3,
 		Count:         61,
@@ -537,6 +539,21 @@ func TestHistogramMatches(t *testing.T) {
 	})
 	h2.NegativeBuckets = append(h2.NegativeBuckets, 1)
 	notEquals(h1, *h2)
+
+	// Sum is StaleNaN.
+	hStale := h1.Copy()
+	hStale.Sum = math.Float64frombits(value.StaleNaN)
+	notEquals(h1, *hStale)
+	equals(*hStale, *hStale)
+
+	// Sum is NaN (but not a StaleNaN).
+	hNaN := h1.Copy()
+	hNaN.Sum = math.NaN()
+	notEquals(h1, *hNaN)
+	equals(*hNaN, *hNaN)
+
+	// Sum StaleNaN vs regular NaN.
+	notEquals(*hStale, *hNaN)
 }
 
 func TestHistogramCompact(t *testing.T) {

model/textparse/interface.go

@@ -16,6 +16,8 @@ package textparse
 import (
 	"mime"
 
+	"github.com/gogo/protobuf/types"
+
 	"github.com/prometheus/prometheus/model/exemplar"
 	"github.com/prometheus/prometheus/model/histogram"
 	"github.com/prometheus/prometheus/model/labels"
@@ -64,6 +66,11 @@ type Parser interface {
 	// retrieved (including the case where no exemplars exist at all).
 	Exemplar(l *exemplar.Exemplar) bool
 
+	// CreatedTimestamp writes the created timestamp of the current sample
+	// into the passed timestamp. It returns false if no created timestamp
+	// exists or if the metric type does not support created timestamps.
+	CreatedTimestamp(ct *types.Timestamp) bool
+
 	// Next advances the parser to the next sample. It returns false if no
 	// more samples were read or an error occurred.
 	Next() (Entry, error)

model/textparse/openmetricsparse.go

@@ -24,6 +24,8 @@ import (
 	"strings"
 	"unicode/utf8"
 
+	"github.com/gogo/protobuf/types"
+
 	"github.com/prometheus/prometheus/model/exemplar"
 	"github.com/prometheus/prometheus/model/histogram"
 	"github.com/prometheus/prometheus/model/labels"
@@ -211,6 +213,11 @@ func (p *OpenMetricsParser) Exemplar(e *exemplar.Exemplar) bool {
 	return true
 }
 
+// CreatedTimestamp returns false because OpenMetricsParser does not support created timestamps (yet).
+func (p *OpenMetricsParser) CreatedTimestamp(_ *types.Timestamp) bool {
+	return false
+}
+
 // nextToken returns the next token from the openMetricsLexer.
 func (p *OpenMetricsParser) nextToken() token {
 	tok := p.l.Lex()

model/textparse/promparse.go

@@ -26,6 +26,8 @@ import (
 	"unicode/utf8"
 	"unsafe"
 
+	"github.com/gogo/protobuf/types"
+
 	"github.com/prometheus/prometheus/model/exemplar"
 	"github.com/prometheus/prometheus/model/histogram"
 	"github.com/prometheus/prometheus/model/labels"
@@ -245,6 +247,11 @@ func (p *PromParser) Exemplar(*exemplar.Exemplar) bool {
 	return false
 }
 
+// CreatedTimestamp returns false because PromParser does not support created timestamps.
+func (p *PromParser) CreatedTimestamp(_ *types.Timestamp) bool {
+	return false
+}
+
 // nextToken returns the next token from the promlexer. It skips over tabs
 // and spaces.
 func (p *PromParser) nextToken() token {

model/textparse/protobufparse.go

@@ -23,6 +23,7 @@ import (
 	"unicode/utf8"
 
 	"github.com/gogo/protobuf/proto"
+	"github.com/gogo/protobuf/types"
 	"github.com/pkg/errors"
 	"github.com/prometheus/common/model"
 
@@ -147,9 +148,15 @@ func (p *ProtobufParser) Series() ([]byte, *int64, float64) {
 	if ts != 0 {
 		return p.metricBytes.Bytes(), &ts, v
 	}
-	// Nasty hack: Assume that ts==0 means no timestamp. That's not true in
+	// TODO(beorn7): We assume here that ts==0 means no timestamp. That's
-	// general, but proto3 has no distinction between unset and
+	// not true in general, but proto3 originally has no distinction between
-	// default. Need to avoid in the final format.
+	// unset and default. At a later stage, the `optional` keyword was
+	// (re-)introduced in proto3, but gogo-protobuf never got updated to
+	// support it. (Note that setting `[(gogoproto.nullable) = true]` for
+	// the `timestamp_ms` field doesn't help, either.) We plan to migrate
+	// away from gogo-protobuf to an actively maintained protobuf
+	// implementation. Once that's done, we can simply use the `optional`
+	// keyword and check for the unset state explicitly.
 	return p.metricBytes.Bytes(), nil, v
 }
 
@@ -347,6 +354,24 @@ func (p *ProtobufParser) Exemplar(ex *exemplar.Exemplar) bool {
 	return true
 }
 
+func (p *ProtobufParser) CreatedTimestamp(ct *types.Timestamp) bool {
+	var foundCT *types.Timestamp
+	switch p.mf.GetType() {
+	case dto.MetricType_COUNTER:
+		foundCT = p.mf.GetMetric()[p.metricPos].GetCounter().GetCreatedTimestamp()
+	case dto.MetricType_SUMMARY:
+		foundCT = p.mf.GetMetric()[p.metricPos].GetSummary().GetCreatedTimestamp()
+	case dto.MetricType_HISTOGRAM, dto.MetricType_GAUGE_HISTOGRAM:
+		foundCT = p.mf.GetMetric()[p.metricPos].GetHistogram().GetCreatedTimestamp()
+	default:
+	}
+	if foundCT == nil {
+		return false
+	}
+	*ct = *foundCT
+	return true
+}
+
 // Next advances the parser to the next "sample" (emulating the behavior of a
 // text format parser). It returns (EntryInvalid, io.EOF) if no samples were
 // read.

model/textparse/protobufparse_test.go

@@ -21,6 +21,7 @@ import (
 	"testing"
 
 	"github.com/gogo/protobuf/proto"
+	"github.com/gogo/protobuf/types"
 	"github.com/stretchr/testify/require"
 
 	"github.com/prometheus/prometheus/model/exemplar"
@@ -530,6 +531,69 @@ metric: <
   >
 >
 
+`,
+		`name: "test_counter_with_createdtimestamp"
+help: "A counter with a created timestamp."
+type: COUNTER
+metric: <
+  counter: <
+    value: 42
+    created_timestamp: <
+      seconds: 1
+      nanos: 1
+    >
+  >
+>
+
+`,
+		`name: "test_summary_with_createdtimestamp"
+help: "A summary with a created timestamp."
+type: SUMMARY
+metric: <
+  summary: <
+    sample_count: 42
+    sample_sum: 1.234
+    created_timestamp: <
+      seconds: 1
+      nanos: 1
+    >
+  >
+>
+
+`,
+		`name: "test_histogram_with_createdtimestamp"
+help: "A histogram with a created timestamp."
+type: HISTOGRAM
+metric: <
+  histogram: <
+    created_timestamp: <
+      seconds: 1
+      nanos: 1
+    >
+    positive_span: <
+      offset: 0
+      length: 0
+    >
+  >
+>
+
+`,
+		`name: "test_gaugehistogram_with_createdtimestamp"
+help: "A gauge histogram with a created timestamp."
+type: GAUGE_HISTOGRAM
+metric: <
+  histogram: <
+    created_timestamp: <
+      seconds: 1
+      nanos: 1
+    >
+    positive_span: <
+      offset: 0
+      length: 0
+    >
+  >
+>
+
 `,
 	}
 
@@ -566,6 +630,7 @@ func TestProtobufParse(t *testing.T) {
 		shs     *histogram.Histogram
 		fhs     *histogram.FloatHistogram
 		e       []exemplar.Exemplar
+		ct      *types.Timestamp
 	}
 
 	inputBuf := createTestProtoBuf(t)
@@ -997,6 +1062,86 @@ func TestProtobufParse(t *testing.T) {
 						"__name__", "empty_histogram",
 					),
 				},
+				{
+					m:    "test_counter_with_createdtimestamp",
+					help: "A counter with a created timestamp.",
+				},
+				{
+					m:   "test_counter_with_createdtimestamp",
+					typ: MetricTypeCounter,
+				},
+				{
+					m:  "test_counter_with_createdtimestamp",
+					v:  42,
+					ct: &types.Timestamp{Seconds: 1, Nanos: 1},
+					lset: labels.FromStrings(
+						"__name__", "test_counter_with_createdtimestamp",
+					),
+				},
+				{
+					m:    "test_summary_with_createdtimestamp",
+					help: "A summary with a created timestamp.",
+				},
+				{
+					m:   "test_summary_with_createdtimestamp",
+					typ: MetricTypeSummary,
+				},
+				{
+					m:  "test_summary_with_createdtimestamp_count",
+					v:  42,
+					ct: &types.Timestamp{Seconds: 1, Nanos: 1},
+					lset: labels.FromStrings(
+						"__name__", "test_summary_with_createdtimestamp_count",
+					),
+				},
+				{
+					m:  "test_summary_with_createdtimestamp_sum",
+					v:  1.234,
+					ct: &types.Timestamp{Seconds: 1, Nanos: 1},
+					lset: labels.FromStrings(
+						"__name__", "test_summary_with_createdtimestamp_sum",
+					),
+				},
+				{
+					m:    "test_histogram_with_createdtimestamp",
+					help: "A histogram with a created timestamp.",
+				},
+				{
+					m:   "test_histogram_with_createdtimestamp",
+					typ: MetricTypeHistogram,
+				},
+				{
+					m:  "test_histogram_with_createdtimestamp",
+					ct: &types.Timestamp{Seconds: 1, Nanos: 1},
+					shs: &histogram.Histogram{
+						CounterResetHint: histogram.UnknownCounterReset,
+						PositiveSpans:    []histogram.Span{},
+						NegativeSpans:    []histogram.Span{},
+					},
+					lset: labels.FromStrings(
+						"__name__", "test_histogram_with_createdtimestamp",
+					),
+				},
+				{
+					m:    "test_gaugehistogram_with_createdtimestamp",
+					help: "A gauge histogram with a created timestamp.",
+				},
+				{
+					m:   "test_gaugehistogram_with_createdtimestamp",
+					typ: MetricTypeGaugeHistogram,
+				},
+				{
+					m:  "test_gaugehistogram_with_createdtimestamp",
+					ct: &types.Timestamp{Seconds: 1, Nanos: 1},
+					shs: &histogram.Histogram{
+						CounterResetHint: histogram.GaugeType,
+						PositiveSpans:    []histogram.Span{},
+						NegativeSpans:    []histogram.Span{},
+					},
+					lset: labels.FromStrings(
+						"__name__", "test_gaugehistogram_with_createdtimestamp",
+					),
+				},
 			},
 		},
 		{
@@ -1739,6 +1884,86 @@ func TestProtobufParse(t *testing.T) {
 						"__name__", "empty_histogram",
 					),
 				},
+				{ // 81
+					m:    "test_counter_with_createdtimestamp",
+					help: "A counter with a created timestamp.",
+				},
+				{ // 82
+					m:   "test_counter_with_createdtimestamp",
+					typ: MetricTypeCounter,
+				},
+				{ // 83
+					m:  "test_counter_with_createdtimestamp",
+					v:  42,
+					ct: &types.Timestamp{Seconds: 1, Nanos: 1},
+					lset: labels.FromStrings(
+						"__name__", "test_counter_with_createdtimestamp",
+					),
+				},
+				{ // 84
+					m:    "test_summary_with_createdtimestamp",
+					help: "A summary with a created timestamp.",
+				},
+				{ // 85
+					m:   "test_summary_with_createdtimestamp",
+					typ: MetricTypeSummary,
+				},
+				{ // 86
+					m:  "test_summary_with_createdtimestamp_count",
+					v:  42,
+					ct: &types.Timestamp{Seconds: 1, Nanos: 1},
+					lset: labels.FromStrings(
+						"__name__", "test_summary_with_createdtimestamp_count",
+					),
+				},
+				{ // 87
+					m:  "test_summary_with_createdtimestamp_sum",
+					v:  1.234,
+					ct: &types.Timestamp{Seconds: 1, Nanos: 1},
+					lset: labels.FromStrings(
+						"__name__", "test_summary_with_createdtimestamp_sum",
+					),
+				},
+				{ // 88
+					m:    "test_histogram_with_createdtimestamp",
+					help: "A histogram with a created timestamp.",
+				},
+				{ // 89
+					m:   "test_histogram_with_createdtimestamp",
+					typ: MetricTypeHistogram,
+				},
+				{ // 90
+					m:  "test_histogram_with_createdtimestamp",
+					ct: &types.Timestamp{Seconds: 1, Nanos: 1},
+					shs: &histogram.Histogram{
+						CounterResetHint: histogram.UnknownCounterReset,
+						PositiveSpans:    []histogram.Span{},
+						NegativeSpans:    []histogram.Span{},
+					},
+					lset: labels.FromStrings(
+						"__name__", "test_histogram_with_createdtimestamp",
+					),
+				},
+				{ // 91
+					m:    "test_gaugehistogram_with_createdtimestamp",
+					help: "A gauge histogram with a created timestamp.",
+				},
+				{ // 92
+					m:   "test_gaugehistogram_with_createdtimestamp",
+					typ: MetricTypeGaugeHistogram,
+				},
+				{ // 93
+					m:  "test_gaugehistogram_with_createdtimestamp",
+					ct: &types.Timestamp{Seconds: 1, Nanos: 1},
+					shs: &histogram.Histogram{
+						CounterResetHint: histogram.GaugeType,
+						PositiveSpans:    []histogram.Span{},
+						NegativeSpans:    []histogram.Span{},
+					},
+					lset: labels.FromStrings(
+						"__name__", "test_gaugehistogram_with_createdtimestamp",
+					),
+				},
 			},
 		},
 	}
@@ -1764,8 +1989,10 @@ func TestProtobufParse(t *testing.T) {
 					m, ts, v := p.Series()
 
 					var e exemplar.Exemplar
+					var ct types.Timestamp
 					p.Metric(&res)
-					found := p.Exemplar(&e)
+					eFound := p.Exemplar(&e)
+					ctFound := p.CreatedTimestamp(&ct)
 					require.Equal(t, exp[i].m, string(m), "i: %d", i)
 					if ts != nil {
 						require.Equal(t, exp[i].t, *ts, "i: %d", i)
@@ -1775,12 +2002,18 @@ func TestProtobufParse(t *testing.T) {
 					require.Equal(t, exp[i].v, v, "i: %d", i)
 					require.Equal(t, exp[i].lset, res, "i: %d", i)
 					if len(exp[i].e) == 0 {
-						require.Equal(t, false, found, "i: %d", i)
+						require.Equal(t, false, eFound, "i: %d", i)
 					} else {
-						require.Equal(t, true, found, "i: %d", i)
+						require.Equal(t, true, eFound, "i: %d", i)
 						require.Equal(t, exp[i].e[0], e, "i: %d", i)
 						require.False(t, p.Exemplar(&e), "too many exemplars returned, i: %d", i)
 					}
+					if exp[i].ct != nil {
+						require.Equal(t, true, ctFound, "i: %d", i)
+						require.Equal(t, exp[i].ct.String(), ct.String(), "i: %d", i)
+					} else {
+						require.Equal(t, false, ctFound, "i: %d", i)
+					}
 
 				case EntryHistogram:
 					m, ts, shs, fhs := p.Histogram()

prompb/io/prometheus/client/metrics.pb.go

@@ -172,11 +172,12 @@ func (m *Gauge) GetValue() float64 {
 }
 
 type Counter struct {
-	Value                float64   `protobuf:"fixed64,1,opt,name=value,proto3" json:"value,omitempty"`
+	Value                float64          `protobuf:"fixed64,1,opt,name=value,proto3" json:"value,omitempty"`
-	Exemplar             *Exemplar `protobuf:"bytes,2,opt,name=exemplar,proto3" json:"exemplar,omitempty"`
+	Exemplar             *Exemplar        `protobuf:"bytes,2,opt,name=exemplar,proto3" json:"exemplar,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}  `json:"-"`
+	CreatedTimestamp     *types.Timestamp `protobuf:"bytes,3,opt,name=created_timestamp,json=createdTimestamp,proto3" json:"created_timestamp,omitempty"`
-	XXX_unrecognized     []byte    `json:"-"`
+	XXX_NoUnkeyedLiteral struct{}         `json:"-"`
-	XXX_sizecache        int32     `json:"-"`
+	XXX_unrecognized     []byte           `json:"-"`
+	XXX_sizecache        int32            `json:"-"`
 }
 
 func (m *Counter) Reset()         { *m = Counter{} }
@@ -226,6 +227,13 @@ func (m *Counter) GetExemplar() *Exemplar {
 	return nil
 }
 
+func (m *Counter) GetCreatedTimestamp() *types.Timestamp {
+	if m != nil {
+		return m.CreatedTimestamp
+	}
+	return nil
+}
+
 type Quantile struct {
 	Quantile             float64  `protobuf:"fixed64,1,opt,name=quantile,proto3" json:"quantile,omitempty"`
 	Value                float64  `protobuf:"fixed64,2,opt,name=value,proto3" json:"value,omitempty"`
@@ -282,12 +290,13 @@ func (m *Quantile) GetValue() float64 {
 }
 
 type Summary struct {
-	SampleCount          uint64     `protobuf:"varint,1,opt,name=sample_count,json=sampleCount,proto3" json:"sample_count,omitempty"`
+	SampleCount          uint64           `protobuf:"varint,1,opt,name=sample_count,json=sampleCount,proto3" json:"sample_count,omitempty"`
-	SampleSum            float64    `protobuf:"fixed64,2,opt,name=sample_sum,json=sampleSum,proto3" json:"sample_sum,omitempty"`
+	SampleSum            float64          `protobuf:"fixed64,2,opt,name=sample_sum,json=sampleSum,proto3" json:"sample_sum,omitempty"`
-	Quantile             []Quantile `protobuf:"bytes,3,rep,name=quantile,proto3" json:"quantile"`
+	Quantile             []Quantile       `protobuf:"bytes,3,rep,name=quantile,proto3" json:"quantile"`
-	XXX_NoUnkeyedLiteral struct{}   `json:"-"`
+	CreatedTimestamp     *types.Timestamp `protobuf:"bytes,4,opt,name=created_timestamp,json=createdTimestamp,proto3" json:"created_timestamp,omitempty"`
-	XXX_unrecognized     []byte     `json:"-"`
+	XXX_NoUnkeyedLiteral struct{}         `json:"-"`
-	XXX_sizecache        int32      `json:"-"`
+	XXX_unrecognized     []byte           `json:"-"`
+	XXX_sizecache        int32            `json:"-"`
 }
 
 func (m *Summary) Reset()         { *m = Summary{} }
@@ -344,6 +353,13 @@ func (m *Summary) GetQuantile() []Quantile {
 	return nil
 }
 
+func (m *Summary) GetCreatedTimestamp() *types.Timestamp {
+	if m != nil {
+		return m.CreatedTimestamp
+	}
+	return nil
+}
+
 type Untyped struct {
 	Value                float64  `protobuf:"fixed64,1,opt,name=value,proto3" json:"value,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
@@ -396,7 +412,8 @@ type Histogram struct {
 	SampleCountFloat float64 `protobuf:"fixed64,4,opt,name=sample_count_float,json=sampleCountFloat,proto3" json:"sample_count_float,omitempty"`
 	SampleSum        float64 `protobuf:"fixed64,2,opt,name=sample_sum,json=sampleSum,proto3" json:"sample_sum,omitempty"`
 	// Buckets for the conventional histogram.
-	Bucket []Bucket `protobuf:"bytes,3,rep,name=bucket,proto3" json:"bucket"`
+	Bucket           []Bucket         `protobuf:"bytes,3,rep,name=bucket,proto3" json:"bucket"`
+	CreatedTimestamp *types.Timestamp `protobuf:"bytes,15,opt,name=created_timestamp,json=createdTimestamp,proto3" json:"created_timestamp,omitempty"`
 	// schema defines the bucket schema. Currently, valid numbers are -4 <= n <= 8.
 	// They are all for base-2 bucket schemas, where 1 is a bucket boundary in each case, and
 	// then each power of two is divided into 2^n logarithmic buckets.
@@ -489,6 +506,13 @@ func (m *Histogram) GetBucket() []Bucket {
 	return nil
 }
 
+func (m *Histogram) GetCreatedTimestamp() *types.Timestamp {
+	if m != nil {
+		return m.CreatedTimestamp
+	}
+	return nil
+}
+
 func (m *Histogram) GetSchema() int32 {
 	if m != nil {
 		return m.Schema
@@ -941,65 +965,67 @@ func init() {
 }
 
 var fileDescriptor_d1e5ddb18987a258 = []byte{
-	// 923 bytes of a gzipped FileDescriptorProto
+	// 960 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xa4, 0x56, 0xdd, 0x8e, 0xdb, 0x44,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xa4, 0x56, 0xdd, 0x6e, 0x1b, 0x45,
-	0x18, 0xad, 0x1b, 0xe7, 0xc7, 0x5f, 0x36, 0xdb, 0x74, 0x88, 0x2a, 0x6b, 0x61, 0x37, 0xc1, 0x12,
+	0x14, 0xee, 0xd6, 0xbf, 0x7b, 0x1c, 0x27, 0x9b, 0xc1, 0xaa, 0x56, 0x81, 0xc4, 0x66, 0x25, 0xa4,
-	0xd2, 0x82, 0x50, 0x22, 0xa0, 0x08, 0x54, 0x40, 0x62, 0xb7, 0xdd, 0x6e, 0x51, 0x49, 0x5b, 0x26,
+	0x80, 0x90, 0x2d, 0xa0, 0x08, 0x54, 0x8a, 0x44, 0xd2, 0xa6, 0x2e, 0x2a, 0x6e, 0xcb, 0xd8, 0xbe,
-	0xc9, 0x45, 0xe1, 0xc2, 0x9a, 0x64, 0x67, 0x1d, 0x0b, 0xdb, 0x63, 0xec, 0x71, 0xc5, 0x72, 0xcf,
+	0x28, 0x37, 0xab, 0xb1, 0x3d, 0x59, 0xaf, 0xd8, 0xdd, 0x59, 0xf6, 0xa7, 0x22, 0xdc, 0xf3, 0x0c,
-	0x25, 0xd7, 0xbc, 0x02, 0x4f, 0x82, 0x7a, 0xc9, 0x13, 0x20, 0xb4, 0xef, 0xc0, 0x3d, 0x9a, 0x3f,
+	0xbc, 0x00, 0x17, 0x3c, 0x05, 0x97, 0xa8, 0x97, 0x5c, 0x71, 0x89, 0x50, 0x9e, 0x04, 0xcd, 0xdf,
-	0x3b, 0x5b, 0x39, 0x85, 0x15, 0x77, 0x33, 0xc7, 0xe7, 0xfb, 0xe6, 0x9c, 0x99, 0xc9, 0x99, 0x80,
+	0xae, 0x53, 0xad, 0x03, 0x81, 0xbb, 0x99, 0xcf, 0xdf, 0x39, 0xf3, 0x9d, 0x6f, 0xc6, 0xe7, 0x2c,
-	0x17, 0xb2, 0x49, 0x9a, 0xb1, 0x98, 0xf2, 0x35, 0x2d, 0xf2, 0xc9, 0x2a, 0x0a, 0x69, 0xc2, 0x27,
+	0x38, 0x3e, 0x1b, 0xc5, 0x09, 0x0b, 0x69, 0xb6, 0xa6, 0x79, 0x3a, 0x5a, 0x06, 0x3e, 0x8d, 0xb2,
-	0x31, 0xe5, 0x59, 0xb8, 0xca, 0xc7, 0x69, 0xc6, 0x38, 0x43, 0x83, 0x90, 0x8d, 0x2b, 0xce, 0x58,
+	0x51, 0x48, 0xb3, 0xc4, 0x5f, 0xa6, 0xc3, 0x38, 0x61, 0x19, 0x43, 0x3d, 0x9f, 0x0d, 0x4b, 0xce,
-	0x71, 0xf6, 0x06, 0x01, 0x0b, 0x98, 0x24, 0x4c, 0xc4, 0x48, 0x71, 0xf7, 0x86, 0x01, 0x63, 0x41,
+	0x50, 0x72, 0x0e, 0x7a, 0x1e, 0xf3, 0x98, 0x20, 0x8c, 0xf8, 0x4a, 0x72, 0x0f, 0xfa, 0x1e, 0x63,
-	0x44, 0x27, 0x72, 0xb6, 0x2c, 0xce, 0x27, 0x3c, 0x8c, 0x69, 0xce, 0x49, 0x9c, 0x2a, 0x82, 0xf7,
+	0x5e, 0x40, 0x47, 0x62, 0xb7, 0xc8, 0xcf, 0x47, 0x99, 0x1f, 0xd2, 0x34, 0x23, 0x61, 0x2c, 0x09,
-	0x31, 0x38, 0x5f, 0x93, 0x25, 0x8d, 0x9e, 0x91, 0x30, 0x43, 0x08, 0xec, 0x84, 0xc4, 0xd4, 0xb5,
+	0xce, 0xc7, 0x60, 0x7e, 0x45, 0x16, 0x34, 0x78, 0x4e, 0xfc, 0x04, 0x21, 0xa8, 0x47, 0x24, 0xa4,
-	0x46, 0xd6, 0xa1, 0x83, 0xe5, 0x18, 0x0d, 0xa0, 0xf9, 0x82, 0x44, 0x05, 0x75, 0x6f, 0x4a, 0x50,
+	0xb6, 0x31, 0x30, 0x8e, 0x4d, 0x2c, 0xd6, 0xa8, 0x07, 0x8d, 0x97, 0x24, 0xc8, 0xa9, 0x7d, 0x5b,
-	0x4d, 0xbc, 0x7d, 0x68, 0x9e, 0x92, 0x22, 0xd8, 0xf8, 0x2c, 0x6a, 0x2c, 0xf3, 0xf9, 0x3b, 0x68,
+	0x80, 0x72, 0xe3, 0x1c, 0x42, 0x63, 0x4c, 0x72, 0x6f, 0xe3, 0x67, 0x1e, 0x63, 0xe8, 0x9f, 0x7f,
-	0xdf, 0x67, 0x45, 0xc2, 0x69, 0x56, 0x4f, 0x40, 0xf7, 0xa0, 0x43, 0x7f, 0xa4, 0x71, 0x1a, 0x91,
+	0x36, 0xa0, 0xf5, 0x80, 0xe5, 0x51, 0x46, 0x93, 0x6a, 0x06, 0xba, 0x07, 0x6d, 0xfa, 0x3d, 0x0d,
-	0x4c, 0x36, 0xee, 0x7e, 0x78, 0x30, 0xae, 0xb3, 0x35, 0x3e, 0xd1, 0x2c, 0x5c, 0xf2, 0xbd, 0xcf,
+	0xe3, 0x80, 0x24, 0x22, 0x73, 0xe7, 0xc3, 0xa3, 0x61, 0x55, 0x5d, 0xc3, 0x33, 0xc5, 0xc2, 0x05,
-	0xa1, 0xf3, 0x4d, 0x41, 0x12, 0x1e, 0x46, 0x14, 0xed, 0x41, 0xe7, 0x07, 0x3d, 0xd6, 0x0b, 0x94,
+	0x1f, 0x8d, 0x61, 0x7f, 0x99, 0x50, 0x92, 0xd1, 0x95, 0x5b, 0x94, 0x63, 0xd7, 0x44, 0x92, 0x83,
-	0xf3, 0xab, 0xca, 0x4b, 0x69, 0xbf, 0x58, 0xd0, 0x9e, 0x15, 0x71, 0x4c, 0xb2, 0x0b, 0xf4, 0x36,
+	0xa1, 0x2c, 0x78, 0xa8, 0x0b, 0x1e, 0xce, 0x34, 0x03, 0x5b, 0x2a, 0xa8, 0x40, 0x9c, 0xfb, 0xd0,
-	0xec, 0xe4, 0x24, 0x4e, 0x23, 0xea, 0xaf, 0x84, 0x5a, 0xd9, 0xc1, 0xc6, 0x5d, 0x85, 0x49, 0x03,
+	0xfe, 0x3a, 0x27, 0x51, 0xe6, 0x07, 0x14, 0x1d, 0x40, 0xfb, 0x3b, 0xb5, 0x56, 0x4a, 0x8b, 0xfd,
-	0x68, 0x1f, 0x40, 0x53, 0xf2, 0x22, 0xd6, 0x9d, 0x1c, 0x85, 0xcc, 0x8a, 0x18, 0x7d, 0xb9, 0xb1,
+	0x55, 0x0f, 0x8a, 0x22, 0xff, 0x30, 0xa0, 0x35, 0xcd, 0xc3, 0x90, 0x24, 0x17, 0xe8, 0x6d, 0xd8,
-	0x7e, 0x63, 0xd4, 0xd8, 0xee, 0xc3, 0x28, 0x3e, 0xb6, 0x5f, 0xfe, 0x39, 0xbc, 0x51, 0xa9, 0xf4,
+	0x49, 0x49, 0x18, 0x07, 0xd4, 0x5d, 0xf2, 0xb2, 0x45, 0x86, 0x3a, 0xee, 0x48, 0x4c, 0x38, 0x81,
-	0x86, 0xd0, 0x5e, 0x24, 0xfc, 0x22, 0xa5, 0x67, 0x5b, 0xf6, 0xf2, 0x6f, 0x1b, 0x9c, 0x47, 0x61,
+	0x0e, 0x01, 0x14, 0x25, 0xcd, 0x43, 0x95, 0xc9, 0x94, 0xc8, 0x34, 0x0f, 0xd1, 0x17, 0x1b, 0xe7,
-	0xce, 0x59, 0x90, 0x91, 0xf8, 0xbf, 0x48, 0x7e, 0x1f, 0xd0, 0x26, 0xc5, 0x3f, 0x8f, 0x18, 0xe1,
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-	0x00, 0xff, 0xff, 0x52, 0x2d, 0xb5, 0x31, 0xef, 0x08, 0x00, 0x00,
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+	0xfe, 0xe8, 0xef, 0x00, 0x00, 0x00, 0xff, 0xff, 0x0d, 0x2e, 0x66, 0xc1, 0xcb, 0x09, 0x00, 0x00,
 }
 
 func (m *LabelPair) Marshal() (dAtA []byte, err error) {
@@ -1100,6 +1126,18 @@ func (m *Counter) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i -= len(m.XXX_unrecognized)
 		copy(dAtA[i:], m.XXX_unrecognized)
 	}
+	if m.CreatedTimestamp != nil {
+		{
+			size, err := m.CreatedTimestamp.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintMetrics(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x1a
+	}
 	if m.Exemplar != nil {
 		{
 			size, err := m.Exemplar.MarshalToSizedBuffer(dAtA[:i])
@@ -1184,6 +1222,18 @@ func (m *Summary) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i -= len(m.XXX_unrecognized)
 		copy(dAtA[i:], m.XXX_unrecognized)
 	}
+	if m.CreatedTimestamp != nil {
+		{
+			size, err := m.CreatedTimestamp.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintMetrics(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x22
+	}
 	if len(m.Quantile) > 0 {
 		for iNdEx := len(m.Quantile) - 1; iNdEx >= 0; iNdEx-- {
 			{
@@ -1269,32 +1319,44 @@ func (m *Histogram) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i -= len(m.XXX_unrecognized)
 		copy(dAtA[i:], m.XXX_unrecognized)
 	}
+	if m.CreatedTimestamp != nil {
+		{
+			size, err := m.CreatedTimestamp.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintMetrics(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x7a
+	}
 	if len(m.PositiveCount) > 0 {
 		for iNdEx := len(m.PositiveCount) - 1; iNdEx >= 0; iNdEx-- {
-			f2 := math.Float64bits(float64(m.PositiveCount[iNdEx]))
+			f5 := math.Float64bits(float64(m.PositiveCount[iNdEx]))
 			i -= 8
-			encoding_binary.LittleEndian.PutUint64(dAtA[i:], uint64(f2))
+			encoding_binary.LittleEndian.PutUint64(dAtA[i:], uint64(f5))
 		}
 		i = encodeVarintMetrics(dAtA, i, uint64(len(m.PositiveCount)*8))
 		i--
 		dAtA[i] = 0x72
 	}
 	if len(m.PositiveDelta) > 0 {
-		var j3 int
+		var j6 int
-		dAtA5 := make([]byte, len(m.PositiveDelta)*10)
+		dAtA8 := make([]byte, len(m.PositiveDelta)*10)
 		for _, num := range m.PositiveDelta {
-			x4 := (uint64(num) << 1) ^ uint64((num >> 63))
+			x7 := (uint64(num) << 1) ^ uint64((num >> 63))
-			for x4 >= 1<<7 {
+			for x7 >= 1<<7 {
-				dAtA5[j3] = uint8(uint64(x4)&0x7f | 0x80)
+				dAtA8[j6] = uint8(uint64(x7)&0x7f | 0x80)
-				j3++
+				j6++
-				x4 >>= 7
+				x7 >>= 7
 			}
-			dAtA5[j3] = uint8(x4)
+			dAtA8[j6] = uint8(x7)
-			j3++
+			j6++
 		}
-		i -= j3
+		i -= j6
-		copy(dAtA[i:], dAtA5[:j3])
+		copy(dAtA[i:], dAtA8[:j6])
-		i = encodeVarintMetrics(dAtA, i, uint64(j3))
+		i = encodeVarintMetrics(dAtA, i, uint64(j6))
 		i--
 		dAtA[i] = 0x6a
 	}
@@ -1314,30 +1376,30 @@ func (m *Histogram) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	}
 	if len(m.NegativeCount) > 0 {
 		for iNdEx := len(m.NegativeCount) - 1; iNdEx >= 0; iNdEx-- {
-			f6 := math.Float64bits(float64(m.NegativeCount[iNdEx]))
+			f9 := math.Float64bits(float64(m.NegativeCount[iNdEx]))
 			i -= 8
-			encoding_binary.LittleEndian.PutUint64(dAtA[i:], uint64(f6))
+			encoding_binary.LittleEndian.PutUint64(dAtA[i:], uint64(f9))
 		}
 		i = encodeVarintMetrics(dAtA, i, uint64(len(m.NegativeCount)*8))
 		i--
 		dAtA[i] = 0x5a
 	}
 	if len(m.NegativeDelta) > 0 {
-		var j7 int
+		var j10 int
-		dAtA9 := make([]byte, len(m.NegativeDelta)*10)
+		dAtA12 := make([]byte, len(m.NegativeDelta)*10)
 		for _, num := range m.NegativeDelta {
-			x8 := (uint64(num) << 1) ^ uint64((num >> 63))
+			x11 := (uint64(num) << 1) ^ uint64((num >> 63))
-			for x8 >= 1<<7 {
+			for x11 >= 1<<7 {
-				dAtA9[j7] = uint8(uint64(x8)&0x7f | 0x80)
+				dAtA12[j10] = uint8(uint64(x11)&0x7f | 0x80)
-				j7++
+				j10++
-				x8 >>= 7
+				x11 >>= 7
 			}
-			dAtA9[j7] = uint8(x8)
+			dAtA12[j10] = uint8(x11)
-			j7++
+			j10++
 		}
-		i -= j7
+		i -= j10
-		copy(dAtA[i:], dAtA9[:j7])
+		copy(dAtA[i:], dAtA12[:j10])
-		i = encodeVarintMetrics(dAtA, i, uint64(j7))
+		i = encodeVarintMetrics(dAtA, i, uint64(j10))
 		i--
 		dAtA[i] = 0x52
 	}
@@ -1788,6 +1850,10 @@ func (m *Counter) Size() (n int) {
 		l = m.Exemplar.Size()
 		n += 1 + l + sovMetrics(uint64(l))
 	}
+	if m.CreatedTimestamp != nil {
+		l = m.CreatedTimestamp.Size()
+		n += 1 + l + sovMetrics(uint64(l))
+	}
 	if m.XXX_unrecognized != nil {
 		n += len(m.XXX_unrecognized)
 	}
@@ -1830,6 +1896,10 @@ func (m *Summary) Size() (n int) {
 			n += 1 + l + sovMetrics(uint64(l))
 		}
 	}
+	if m.CreatedTimestamp != nil {
+		l = m.CreatedTimestamp.Size()
+		n += 1 + l + sovMetrics(uint64(l))
+	}
 	if m.XXX_unrecognized != nil {
 		n += len(m.XXX_unrecognized)
 	}
@@ -1916,6 +1986,10 @@ func (m *Histogram) Size() (n int) {
 	if len(m.PositiveCount) > 0 {
 		n += 1 + sovMetrics(uint64(len(m.PositiveCount)*8)) + len(m.PositiveCount)*8
 	}
+	if m.CreatedTimestamp != nil {
+		l = m.CreatedTimestamp.Size()
+		n += 1 + l + sovMetrics(uint64(l))
+	}
 	if m.XXX_unrecognized != nil {
 		n += len(m.XXX_unrecognized)
 	}
@@ -2319,6 +2393,42 @@ func (m *Counter) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
+		case 3:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field CreatedTimestamp", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowMetrics
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthMetrics
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthMetrics
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.CreatedTimestamp == nil {
+				m.CreatedTimestamp = &types.Timestamp{}
+			}
+			if err := m.CreatedTimestamp.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipMetrics(dAtA[iNdEx:])
@@ -2507,6 +2617,42 @@ func (m *Summary) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
+		case 4:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field CreatedTimestamp", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowMetrics
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthMetrics
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthMetrics
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.CreatedTimestamp == nil {
+				m.CreatedTimestamp = &types.Timestamp{}
+			}
+			if err := m.CreatedTimestamp.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipMetrics(dAtA[iNdEx:])
@@ -3089,6 +3235,42 @@ func (m *Histogram) Unmarshal(dAtA []byte) error {
 			} else {
 				return fmt.Errorf("proto: wrong wireType = %d for field PositiveCount", wireType)
 			}
+		case 15:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field CreatedTimestamp", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowMetrics
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthMetrics
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthMetrics
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.CreatedTimestamp == nil {
+				m.CreatedTimestamp = &types.Timestamp{}
+			}
+			if err := m.CreatedTimestamp.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipMetrics(dAtA[iNdEx:])

prompb/io/prometheus/client/metrics.proto

@@ -51,6 +51,8 @@ message Gauge {
 message Counter {
   double   value    = 1;
   Exemplar exemplar = 2;
+
+  google.protobuf.Timestamp  created_timestamp = 3;
 }
 
 message Quantile {
@@ -62,6 +64,8 @@ message Summary {
   uint64            sample_count = 1;
   double            sample_sum   = 2;
   repeated Quantile quantile     = 3 [(gogoproto.nullable) = false];
+
+  google.protobuf.Timestamp  created_timestamp = 4;
 }
 
 message Untyped {
@@ -75,6 +79,8 @@ message Histogram {
   // Buckets for the conventional histogram.
   repeated Bucket bucket = 3 [(gogoproto.nullable) = false]; // Ordered in increasing order of upper_bound, +Inf bucket is optional.
 
+  google.protobuf.Timestamp created_timestamp = 15;
+
   // Everything below here is for native histograms (also known as sparse histograms).
   // Native histograms are an experimental feature without stability guarantees.
 

promql/engine.go

@@ -1224,10 +1224,11 @@ func (ev *evaluator) rangeEval(prepSeries func(labels.Labels, *EvalSeriesHelper)
 		enh.Out = result[:0] // Reuse result vector.
 		warnings.Merge(ws)
 
-		ev.currentSamples += len(result)
+		vecNumSamples := result.TotalSamples()
+		ev.currentSamples += vecNumSamples
 		// When we reset currentSamples to tempNumSamples during the next iteration of the loop it also
 		// needs to include the samples from the result here, as they're still in memory.
-		tempNumSamples += len(result)
+		tempNumSamples += vecNumSamples
 		ev.samplesStats.UpdatePeak(ev.currentSamples)
 
 		if ev.currentSamples > ev.maxSamples {
@@ -1323,12 +1324,10 @@ func (ev *evaluator) evalSubquery(subq *parser.SubqueryExpr) (*parser.MatrixSele
 		Range:          subq.Range,
 		VectorSelector: vs,
 	}
-	totalSamples := 0
 	for _, s := range mat {
-		totalSamples += len(s.Floats) + len(s.Histograms)
 		vs.Series = append(vs.Series, NewStorageSeries(s))
 	}
-	return ms, totalSamples, ws
+	return ms, mat.TotalSamples(), ws
 }
 
 // eval evaluates the given expression as the given AST expression node requires.
@@ -1470,7 +1469,7 @@ func (ev *evaluator) eval(expr parser.Expr) (parser.Value, annotations.Annotatio
 		it := storage.NewBuffer(selRange)
 		var chkIter chunkenc.Iterator
 		for i, s := range selVS.Series {
-			ev.currentSamples -= len(floats) + len(histograms)
+			ev.currentSamples -= len(floats) + totalHPointSize(histograms)
 			if floats != nil {
 				floats = floats[:0]
 			}
@@ -1514,7 +1513,7 @@ func (ev *evaluator) eval(expr parser.Expr) (parser.Value, annotations.Annotatio
 				// Make the function call.
 				outVec, annos := call(inArgs, e.Args, enh)
 				warnings.Merge(annos)
-				ev.samplesStats.IncrementSamplesAtStep(step, int64(len(floats)+len(histograms)))
+				ev.samplesStats.IncrementSamplesAtStep(step, int64(len(floats)+totalHPointSize(histograms)))
 
 				enh.Out = outVec[:0]
 				if len(outVec) > 0 {
@@ -1533,10 +1532,11 @@ func (ev *evaluator) eval(expr parser.Expr) (parser.Value, annotations.Annotatio
 				// Only buffer stepRange milliseconds from the second step on.
 				it.ReduceDelta(stepRange)
 			}
-			if len(ss.Floats)+len(ss.Histograms) > 0 {
+			histSamples := totalHPointSize(ss.Histograms)
-				if ev.currentSamples+len(ss.Floats)+len(ss.Histograms) <= ev.maxSamples {
+			if len(ss.Floats)+histSamples > 0 {
+				if ev.currentSamples+len(ss.Floats)+histSamples <= ev.maxSamples {
 					mat = append(mat, ss)
-					ev.currentSamples += len(ss.Floats) + len(ss.Histograms)
+					ev.currentSamples += len(ss.Floats) + histSamples
 				} else {
 					ev.error(ErrTooManySamples(env))
 				}
@@ -1545,7 +1545,7 @@ func (ev *evaluator) eval(expr parser.Expr) (parser.Value, annotations.Annotatio
 		}
 		ev.samplesStats.UpdatePeak(ev.currentSamples)
 
-		ev.currentSamples -= len(floats) + len(histograms)
+		ev.currentSamples -= len(floats) + totalHPointSize(histograms)
 		putFPointSlice(floats)
 		putHPointSlice(histograms)
 
@@ -1692,14 +1692,18 @@ func (ev *evaluator) eval(expr parser.Expr) (parser.Value, annotations.Annotatio
 								ss.Floats = getFPointSlice(numSteps)
 							}
 							ss.Floats = append(ss.Floats, FPoint{F: f, T: ts})
+							ev.currentSamples++
+							ev.samplesStats.IncrementSamplesAtStep(step, 1)
 						} else {
 							if ss.Histograms == nil {
 								ss.Histograms = getHPointSlice(numSteps)
 							}
-							ss.Histograms = append(ss.Histograms, HPoint{H: h, T: ts})
+							point := HPoint{H: h, T: ts}
+							ss.Histograms = append(ss.Histograms, point)
+							histSize := point.size()
+							ev.currentSamples += histSize
+							ev.samplesStats.IncrementSamplesAtStep(step, int64(histSize))
 						}
-						ev.samplesStats.IncrementSamplesAtStep(step, 1)
-						ev.currentSamples++
 					} else {
 						ev.error(ErrTooManySamples(env))
 					}
@@ -1807,13 +1811,15 @@ func (ev *evaluator) eval(expr parser.Expr) (parser.Value, annotations.Annotatio
 						T: ts,
 						F: mat[i].Floats[0].F,
 					})
+					ev.currentSamples++
 				} else {
-					mat[i].Histograms = append(mat[i].Histograms, HPoint{
+					point := HPoint{
 						T: ts,
 						H: mat[i].Histograms[0].H,
-					})
+					}
+					mat[i].Histograms = append(mat[i].Histograms, point)
+					ev.currentSamples += point.size()
 				}
-				ev.currentSamples++
 				if ev.currentSamples > ev.maxSamples {
 					ev.error(ErrTooManySamples(env))
 				}
@@ -1857,9 +1863,14 @@ func (ev *evaluator) rangeEvalTimestampFunctionOverVectorSelector(vs *parser.Vec
 					F:      f,
 					H:      h,
 				})
-
+				histSize := 0
+				if h != nil {
+					histSize := h.Size() / 16 // 16 bytes per sample.
+					ev.currentSamples += histSize
+				}
 				ev.currentSamples++
-				ev.samplesStats.IncrementSamplesAtTimestamp(enh.Ts, 1)
+
+				ev.samplesStats.IncrementSamplesAtTimestamp(enh.Ts, int64(1+histSize))
 				if ev.currentSamples > ev.maxSamples {
 					ev.error(ErrTooManySamples(env))
 				}
@@ -1981,10 +1992,10 @@ func (ev *evaluator) matrixSelector(node *parser.MatrixSelector) (Matrix, annota
 		}
 
 		ss.Floats, ss.Histograms = ev.matrixIterSlice(it, mint, maxt, nil, nil)
-		totalLen := int64(len(ss.Floats)) + int64(len(ss.Histograms))
+		totalSize := int64(len(ss.Floats)) + int64(totalHPointSize(ss.Histograms))
-		ev.samplesStats.IncrementSamplesAtTimestamp(ev.startTimestamp, totalLen)
+		ev.samplesStats.IncrementSamplesAtTimestamp(ev.startTimestamp, totalSize)
 
-		if totalLen > 0 {
+		if totalSize > 0 {
 			matrix = append(matrix, ss)
 		} else {
 			putFPointSlice(ss.Floats)
@@ -2040,13 +2051,13 @@ func (ev *evaluator) matrixIterSlice(
 		var drop int
 		for drop = 0; histograms[drop].T < mint; drop++ { // nolint:revive
 		}
-		ev.currentSamples -= drop
 		copy(histograms, histograms[drop:])
 		histograms = histograms[:len(histograms)-drop]
+		ev.currentSamples -= totalHPointSize(histograms)
 		// Only append points with timestamps after the last timestamp we have.
 		mintHistograms = histograms[len(histograms)-1].T + 1
 	} else {
-		ev.currentSamples -= len(histograms)
+		ev.currentSamples -= totalHPointSize(histograms)
 		if histograms != nil {
 			histograms = histograms[:0]
 		}
@@ -2075,11 +2086,12 @@ loop:
 				if ev.currentSamples >= ev.maxSamples {
 					ev.error(ErrTooManySamples(env))
 				}
-				ev.currentSamples++
+				point := HPoint{T: t, H: h}
 				if histograms == nil {
 					histograms = getHPointSlice(16)
 				}
-				histograms = append(histograms, HPoint{T: t, H: h})
+				histograms = append(histograms, point)
+				ev.currentSamples += point.size()
 			}
 		case chunkenc.ValFloat:
 			t, f := buf.At()
@@ -2110,8 +2122,9 @@ loop:
 			if histograms == nil {
 				histograms = getHPointSlice(16)
 			}
-			histograms = append(histograms, HPoint{T: t, H: h})
+			point := HPoint{T: t, H: h}
-			ev.currentSamples++
+			histograms = append(histograms, point)
+			ev.currentSamples += point.size()
 		}
 	case chunkenc.ValFloat:
 		t, f := it.At()

promql/functions.go

@@ -88,7 +88,11 @@ func extrapolatedRate(vals []parser.Value, args parser.Expressions, enh *EvalNod
 		return enh.Out, annos.Add(annotations.NewMixedFloatsHistogramsWarning(metricName, args[0].PositionRange()))
 	}
 
-	if isCounter && !strings.HasSuffix(metricName, "_total") && !strings.HasSuffix(metricName, "_sum") && !strings.HasSuffix(metricName, "_count") {
+	if isCounter && metricName != "" && len(samples.Floats) > 0 &&
+		!strings.HasSuffix(metricName, "_total") &&
+		!strings.HasSuffix(metricName, "_sum") &&
+		!strings.HasSuffix(metricName, "_count") &&
+		!strings.HasSuffix(metricName, "_bucket") {
 		annos.Add(annotations.NewPossibleNonCounterInfo(metricName, args[0].PositionRange()))
 	}
 
@@ -1168,10 +1172,14 @@ func funcHistogramQuantile(vals []parser.Value, args parser.Expressions, enh *Ev
 
 	for _, mb := range enh.signatureToMetricWithBuckets {
 		if len(mb.buckets) > 0 {
+			res, forcedMonotonicity := bucketQuantile(q, mb.buckets)
 			enh.Out = append(enh.Out, Sample{
 				Metric: mb.metric,
-				F:      bucketQuantile(q, mb.buckets),
+				F:      res,
 			})
+			if forcedMonotonicity {
+				annos.Add(annotations.NewHistogramQuantileForcedMonotonicityInfo(mb.metric.Get(labels.MetricName), args[1].PositionRange()))
+			}
 		}
 	}
 

promql/quantile.go

@@ -71,15 +71,17 @@ type metricWithBuckets struct {
 // If q<0, -Inf is returned.
 //
 // If q>1, +Inf is returned.
-func bucketQuantile(q float64, buckets buckets) float64 {
+//
+// We also return a bool to indicate if monotonicity needed to be forced.
+func bucketQuantile(q float64, buckets buckets) (float64, bool) {
 	if math.IsNaN(q) {
-		return math.NaN()
+		return math.NaN(), false
 	}
 	if q < 0 {
-		return math.Inf(-1)
+		return math.Inf(-1), false
 	}
 	if q > 1 {
-		return math.Inf(+1)
+		return math.Inf(+1), false
 	}
 	slices.SortFunc(buckets, func(a, b bucket) int {
 		// We don't expect the bucket boundary to be a NaN.
@@ -92,27 +94,27 @@ func bucketQuantile(q float64, buckets buckets) float64 {
 		return 0
 	})
 	if !math.IsInf(buckets[len(buckets)-1].upperBound, +1) {
-		return math.NaN()
+		return math.NaN(), false
 	}
 
 	buckets = coalesceBuckets(buckets)
-	ensureMonotonic(buckets)
+	forcedMonotonic := ensureMonotonic(buckets)
 
 	if len(buckets) < 2 {
-		return math.NaN()
+		return math.NaN(), false
 	}
 	observations := buckets[len(buckets)-1].count
 	if observations == 0 {
-		return math.NaN()
+		return math.NaN(), false
 	}
 	rank := q * observations
 	b := sort.Search(len(buckets)-1, func(i int) bool { return buckets[i].count >= rank })
 
 	if b == len(buckets)-1 {
-		return buckets[len(buckets)-2].upperBound
+		return buckets[len(buckets)-2].upperBound, forcedMonotonic
 	}
 	if b == 0 && buckets[0].upperBound <= 0 {
-		return buckets[0].upperBound
+		return buckets[0].upperBound, forcedMonotonic
 	}
 	var (
 		bucketStart float64
@@ -124,7 +126,7 @@ func bucketQuantile(q float64, buckets buckets) float64 {
 		count -= buckets[b-1].count
 		rank -= buckets[b-1].count
 	}
-	return bucketStart + (bucketEnd-bucketStart)*(rank/count)
+	return bucketStart + (bucketEnd-bucketStart)*(rank/count), forcedMonotonic
 }
 
 // histogramQuantile calculates the quantile 'q' based on the given histogram.
@@ -342,37 +344,24 @@ func coalesceBuckets(buckets buckets) buckets {
 // The assumption that bucket counts increase monotonically with increasing
 // upperBound may be violated during:
 //
-//   * Recording rule evaluation of histogram_quantile, especially when rate()
+//   - Circumstances where data is already inconsistent at the target's side.
-//      has been applied to the underlying bucket timeseries.
+//   - Ingestion via the remote write receiver that Prometheus implements.
-//   * Evaluation of histogram_quantile computed over federated bucket
+//   - Optimisation of query execution where precision is sacrificed for other
-//      timeseries, especially when rate() has been applied.
+//     benefits, not by Prometheus but by systems built on top of it.
-//
-// This is because scraped data is not made available to rule evaluation or
-// federation atomically, so some buckets are computed with data from the
-// most recent scrapes, but the other buckets are missing data from the most
-// recent scrape.
 //
 // Monotonicity is usually guaranteed because if a bucket with upper bound
 // u1 has count c1, then any bucket with a higher upper bound u > u1 must
-// have counted all c1 observations and perhaps more, so that c  >= c1.
+// have counted all c1 observations and perhaps more, so that c >= c1.
-//
-// Randomly interspersed partial sampling breaks that guarantee, and rate()
-// exacerbates it. Specifically, suppose bucket le=1000 has a count of 10 from
-// 4 samples but the bucket with le=2000 has a count of 7 from 3 samples. The
-// monotonicity is broken. It is exacerbated by rate() because under normal
-// operation, cumulative counting of buckets will cause the bucket counts to
-// diverge such that small differences from missing samples are not a problem.
-// rate() removes this divergence.)
 //
 // bucketQuantile depends on that monotonicity to do a binary search for the
 // bucket with the φ-quantile count, so breaking the monotonicity
 // guarantee causes bucketQuantile() to return undefined (nonsense) results.
 //
-// As a somewhat hacky solution until ingestion is atomic per scrape, we
+// As a somewhat hacky solution, we calculate the "envelope" of the histogram
-// calculate the "envelope" of the histogram buckets, essentially removing
+// buckets, essentially removing any decreases in the count between successive
-// any decreases in the count between successive buckets.
+// buckets. We return a bool to indicate if this monotonicity was forced or not.
-
+func ensureMonotonic(buckets buckets) bool {
-func ensureMonotonic(buckets buckets) {
+	forced := false
 	max := buckets[0].count
 	for i := 1; i < len(buckets); i++ {
 		switch {
@@ -380,8 +369,10 @@ func ensureMonotonic(buckets buckets) {
 			max = buckets[i].count
 		case buckets[i].count < max:
 			buckets[i].count = max
+			forced = true
 		}
 	}
+	return forced
 }
 
 // quantile calculates the given quantile of a vector of samples.

promql/value.go

@@ -168,6 +168,23 @@ func (p HPoint) MarshalJSON() ([]byte, error) {
 	return json.Marshal([...]interface{}{float64(p.T) / 1000, h})
 }
 
+// size returns the size of the HPoint compared to the size of an FPoint.
+// The total size is calculated considering the histogram timestamp (p.T - 8 bytes),
+// and then a number of bytes in the histogram.
+// This sum is divided by 16, as samples are 16 bytes.
+func (p HPoint) size() int {
+	return (p.H.Size() + 8) / 16
+}
+
+// totalHPointSize returns the total number of samples in the given slice of HPoints.
+func totalHPointSize(histograms []HPoint) int {
+	var total int
+	for _, h := range histograms {
+		total += h.size()
+	}
+	return total
+}
+
 // Sample is a single sample belonging to a metric. It represents either a float
 // sample or a histogram sample. If H is nil, it is a float sample. Otherwise,
 // it is a histogram sample.
@@ -226,6 +243,21 @@ func (vec Vector) String() string {
 	return strings.Join(entries, "\n")
 }
 
+// TotalSamples returns the total number of samples in the series within a vector.
+// Float samples have a weight of 1 in this number, while histogram samples have a higher
+// weight according to their size compared with the size of a float sample.
+// See HPoint.size for details.
+func (vec Vector) TotalSamples() int {
+	numSamples := 0
+	for _, sample := range vec {
+		numSamples++
+		if sample.H != nil {
+			numSamples += sample.H.Size() / 16
+		}
+	}
+	return numSamples
+}
+
 // ContainsSameLabelset checks if a vector has samples with the same labelset
 // Such a behavior is semantically undefined
 // https://github.com/prometheus/prometheus/issues/4562
@@ -264,10 +296,13 @@ func (m Matrix) String() string {
 }
 
 // TotalSamples returns the total number of samples in the series within a matrix.
+// Float samples have a weight of 1 in this number, while histogram samples have a higher
+// weight according to their size compared with the size of a float sample.
+// See HPoint.size for details.
 func (m Matrix) TotalSamples() int {
 	numSamples := 0
 	for _, series := range m {
-		numSamples += len(series.Floats) + len(series.Histograms)
+		numSamples += len(series.Floats) + totalHPointSize(series.Histograms)
 	}
 	return numSamples
 }

rules/group.go

@@ -0,0 +1,863 @@
+// Copyright 2013 The Prometheus Authors
+// 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 rules
+
+import (
+	"context"
+	"errors"
+	"math"
+	"strings"
+	"sync"
+	"time"
+
+	"golang.org/x/exp/slices"
+
+	"github.com/go-kit/log"
+	"github.com/go-kit/log/level"
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/common/model"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+
+	"github.com/prometheus/prometheus/model/labels"
+	"github.com/prometheus/prometheus/model/timestamp"
+	"github.com/prometheus/prometheus/model/value"
+	"github.com/prometheus/prometheus/promql"
+	"github.com/prometheus/prometheus/storage"
+	"github.com/prometheus/prometheus/tsdb/chunkenc"
+)
+
+// Group is a set of rules that have a logical relation.
+type Group struct {
+	name                 string
+	file                 string
+	interval             time.Duration
+	limit                int
+	rules                []Rule
+	seriesInPreviousEval []map[string]labels.Labels // One per Rule.
+	staleSeries          []labels.Labels
+	opts                 *ManagerOptions
+	mtx                  sync.Mutex
+	evaluationTime       time.Duration
+	lastEvaluation       time.Time // Wall-clock time of most recent evaluation.
+	lastEvalTimestamp    time.Time // Time slot used for most recent evaluation.
+
+	shouldRestore bool
+
+	markStale   bool
+	done        chan struct{}
+	terminated  chan struct{}
+	managerDone chan struct{}
+
+	logger log.Logger
+
+	metrics *Metrics
+
+	// Rule group evaluation iteration function,
+	// defaults to DefaultEvalIterationFunc.
+	evalIterationFunc GroupEvalIterationFunc
+}
+
+// GroupEvalIterationFunc is used to implement and extend rule group
+// evaluation iteration logic. It is configured in Group.evalIterationFunc,
+// and periodically invoked at each group evaluation interval to
+// evaluate the rules in the group at that point in time.
+// DefaultEvalIterationFunc is the default implementation.
+type GroupEvalIterationFunc func(ctx context.Context, g *Group, evalTimestamp time.Time)
+
+type GroupOptions struct {
+	Name, File        string
+	Interval          time.Duration
+	Limit             int
+	Rules             []Rule
+	ShouldRestore     bool
+	Opts              *ManagerOptions
+	done              chan struct{}
+	EvalIterationFunc GroupEvalIterationFunc
+}
+
+// NewGroup makes a new Group with the given name, options, and rules.
+func NewGroup(o GroupOptions) *Group {
+	metrics := o.Opts.Metrics
+	if metrics == nil {
+		metrics = NewGroupMetrics(o.Opts.Registerer)
+	}
+
+	key := GroupKey(o.File, o.Name)
+	metrics.IterationsMissed.WithLabelValues(key)
+	metrics.IterationsScheduled.WithLabelValues(key)
+	metrics.EvalTotal.WithLabelValues(key)
+	metrics.EvalFailures.WithLabelValues(key)
+	metrics.GroupLastEvalTime.WithLabelValues(key)
+	metrics.GroupLastDuration.WithLabelValues(key)
+	metrics.GroupRules.WithLabelValues(key).Set(float64(len(o.Rules)))
+	metrics.GroupSamples.WithLabelValues(key)
+	metrics.GroupInterval.WithLabelValues(key).Set(o.Interval.Seconds())
+
+	evalIterationFunc := o.EvalIterationFunc
+	if evalIterationFunc == nil {
+		evalIterationFunc = DefaultEvalIterationFunc
+	}
+
+	return &Group{
+		name:                 o.Name,
+		file:                 o.File,
+		interval:             o.Interval,
+		limit:                o.Limit,
+		rules:                o.Rules,
+		shouldRestore:        o.ShouldRestore,
+		opts:                 o.Opts,
+		seriesInPreviousEval: make([]map[string]labels.Labels, len(o.Rules)),
+		done:                 make(chan struct{}),
+		managerDone:          o.done,
+		terminated:           make(chan struct{}),
+		logger:               log.With(o.Opts.Logger, "file", o.File, "group", o.Name),
+		metrics:              metrics,
+		evalIterationFunc:    evalIterationFunc,
+	}
+}
+
+// Name returns the group name.
+func (g *Group) Name() string { return g.name }
+
+// File returns the group's file.
+func (g *Group) File() string { return g.file }
+
+// Rules returns the group's rules.
+func (g *Group) Rules() []Rule { return g.rules }
+
+// Queryable returns the group's querable.
+func (g *Group) Queryable() storage.Queryable { return g.opts.Queryable }
+
+// Context returns the group's context.
+func (g *Group) Context() context.Context { return g.opts.Context }
+
+// Interval returns the group's interval.
+func (g *Group) Interval() time.Duration { return g.interval }
+
+// Limit returns the group's limit.
+func (g *Group) Limit() int { return g.limit }
+
+func (g *Group) Logger() log.Logger { return g.logger }
+
+func (g *Group) run(ctx context.Context) {
+	defer close(g.terminated)
+
+	// Wait an initial amount to have consistently slotted intervals.
+	evalTimestamp := g.EvalTimestamp(time.Now().UnixNano()).Add(g.interval)
+	select {
+	case <-time.After(time.Until(evalTimestamp)):
+	case <-g.done:
+		return
+	}
+
+	ctx = promql.NewOriginContext(ctx, map[string]interface{}{
+		"ruleGroup": map[string]string{
+			"file": g.File(),
+			"name": g.Name(),
+		},
+	})
+
+	// The assumption here is that since the ticker was started after having
+	// waited for `evalTimestamp` to pass, the ticks will trigger soon
+	// after each `evalTimestamp + N * g.interval` occurrence.
+	tick := time.NewTicker(g.interval)
+	defer tick.Stop()
+
+	defer func() {
+		if !g.markStale {
+			return
+		}
+		go func(now time.Time) {
+			for _, rule := range g.seriesInPreviousEval {
+				for _, r := range rule {
+					g.staleSeries = append(g.staleSeries, r)
+				}
+			}
+			// That can be garbage collected at this point.
+			g.seriesInPreviousEval = nil
+			// Wait for 2 intervals to give the opportunity to renamed rules
+			// to insert new series in the tsdb. At this point if there is a
+			// renamed rule, it should already be started.
+			select {
+			case <-g.managerDone:
+			case <-time.After(2 * g.interval):
+				g.cleanupStaleSeries(ctx, now)
+			}
+		}(time.Now())
+	}()
+
+	g.evalIterationFunc(ctx, g, evalTimestamp)
+	if g.shouldRestore {
+		// If we have to restore, we wait for another Eval to finish.
+		// The reason behind this is, during first eval (or before it)
+		// we might not have enough data scraped, and recording rules would not
+		// have updated the latest values, on which some alerts might depend.
+		select {
+		case <-g.done:
+			return
+		case <-tick.C:
+			missed := (time.Since(evalTimestamp) / g.interval) - 1
+			if missed > 0 {
+				g.metrics.IterationsMissed.WithLabelValues(GroupKey(g.file, g.name)).Add(float64(missed))
+				g.metrics.IterationsScheduled.WithLabelValues(GroupKey(g.file, g.name)).Add(float64(missed))
+			}
+			evalTimestamp = evalTimestamp.Add((missed + 1) * g.interval)
+			g.evalIterationFunc(ctx, g, evalTimestamp)
+		}
+
+		g.RestoreForState(time.Now())
+		g.shouldRestore = false
+	}
+
+	for {
+		select {
+		case <-g.done:
+			return
+		default:
+			select {
+			case <-g.done:
+				return
+			case <-tick.C:
+				missed := (time.Since(evalTimestamp) / g.interval) - 1
+				if missed > 0 {
+					g.metrics.IterationsMissed.WithLabelValues(GroupKey(g.file, g.name)).Add(float64(missed))
+					g.metrics.IterationsScheduled.WithLabelValues(GroupKey(g.file, g.name)).Add(float64(missed))
+				}
+				evalTimestamp = evalTimestamp.Add((missed + 1) * g.interval)
+
+				g.evalIterationFunc(ctx, g, evalTimestamp)
+			}
+		}
+	}
+}
+
+func (g *Group) stop() {
+	close(g.done)
+	<-g.terminated
+}
+
+func (g *Group) hash() uint64 {
+	l := labels.New(
+		labels.Label{Name: "name", Value: g.name},
+		labels.Label{Name: "file", Value: g.file},
+	)
+	return l.Hash()
+}
+
+// AlertingRules returns the list of the group's alerting rules.
+func (g *Group) AlertingRules() []*AlertingRule {
+	g.mtx.Lock()
+	defer g.mtx.Unlock()
+
+	var alerts []*AlertingRule
+	for _, rule := range g.rules {
+		if alertingRule, ok := rule.(*AlertingRule); ok {
+			alerts = append(alerts, alertingRule)
+		}
+	}
+	slices.SortFunc(alerts, func(a, b *AlertingRule) int {
+		if a.State() == b.State() {
+			return strings.Compare(a.Name(), b.Name())
+		}
+		return int(b.State() - a.State())
+	})
+	return alerts
+}
+
+// HasAlertingRules returns true if the group contains at least one AlertingRule.
+func (g *Group) HasAlertingRules() bool {
+	g.mtx.Lock()
+	defer g.mtx.Unlock()
+
+	for _, rule := range g.rules {
+		if _, ok := rule.(*AlertingRule); ok {
+			return true
+		}
+	}
+	return false
+}
+
+// GetEvaluationTime returns the time in seconds it took to evaluate the rule group.
+func (g *Group) GetEvaluationTime() time.Duration {
+	g.mtx.Lock()
+	defer g.mtx.Unlock()
+	return g.evaluationTime
+}
+
+// setEvaluationTime sets the time in seconds the last evaluation took.
+func (g *Group) setEvaluationTime(dur time.Duration) {
+	g.metrics.GroupLastDuration.WithLabelValues(GroupKey(g.file, g.name)).Set(dur.Seconds())
+
+	g.mtx.Lock()
+	defer g.mtx.Unlock()
+	g.evaluationTime = dur
+}
+
+// GetLastEvaluation returns the time the last evaluation of the rule group took place.
+func (g *Group) GetLastEvaluation() time.Time {
+	g.mtx.Lock()
+	defer g.mtx.Unlock()
+	return g.lastEvaluation
+}
+
+// setLastEvaluation updates evaluationTimestamp to the timestamp of when the rule group was last evaluated.
+func (g *Group) setLastEvaluation(ts time.Time) {
+	g.metrics.GroupLastEvalTime.WithLabelValues(GroupKey(g.file, g.name)).Set(float64(ts.UnixNano()) / 1e9)
+
+	g.mtx.Lock()
+	defer g.mtx.Unlock()
+	g.lastEvaluation = ts
+}
+
+// GetLastEvalTimestamp returns the timestamp of the last evaluation.
+func (g *Group) GetLastEvalTimestamp() time.Time {
+	g.mtx.Lock()
+	defer g.mtx.Unlock()
+	return g.lastEvalTimestamp
+}
+
+// setLastEvalTimestamp updates lastEvalTimestamp to the timestamp of the last evaluation.
+func (g *Group) setLastEvalTimestamp(ts time.Time) {
+	g.mtx.Lock()
+	defer g.mtx.Unlock()
+	g.lastEvalTimestamp = ts
+}
+
+// EvalTimestamp returns the immediately preceding consistently slotted evaluation time.
+func (g *Group) EvalTimestamp(startTime int64) time.Time {
+	var (
+		offset = int64(g.hash() % uint64(g.interval))
+
+		// This group's evaluation times differ from the perfect time intervals by `offset` nanoseconds.
+		// But we can only use `% interval` to align with the interval. And `% interval` will always
+		// align with the perfect time intervals, instead of this group's. Because of this we add
+		// `offset` _after_ aligning with the perfect time interval.
+		//
+		// There can be cases where adding `offset` to the perfect evaluation time can yield a
+		// timestamp in the future, which is not what EvalTimestamp should do.
+		// So we subtract one `offset` to make sure that `now - (now % interval) + offset` gives an
+		// evaluation time in the past.
+		adjNow = startTime - offset
+
+		// Adjust to perfect evaluation intervals.
+		base = adjNow - (adjNow % int64(g.interval))
+
+		// Add one offset to randomize the evaluation times of this group.
+		next = base + offset
+	)
+
+	return time.Unix(0, next).UTC()
+}
+
+func nameAndLabels(rule Rule) string {
+	return rule.Name() + rule.Labels().String()
+}
+
+// CopyState copies the alerting rule and staleness related state from the given group.
+//
+// Rules are matched based on their name and labels. If there are duplicates, the
+// first is matched with the first, second with the second etc.
+func (g *Group) CopyState(from *Group) {
+	g.evaluationTime = from.evaluationTime
+	g.lastEvaluation = from.lastEvaluation
+
+	ruleMap := make(map[string][]int, len(from.rules))
+
+	for fi, fromRule := range from.rules {
+		nameAndLabels := nameAndLabels(fromRule)
+		l := ruleMap[nameAndLabels]
+		ruleMap[nameAndLabels] = append(l, fi)
+	}
+
+	for i, rule := range g.rules {
+		nameAndLabels := nameAndLabels(rule)
+		indexes := ruleMap[nameAndLabels]
+		if len(indexes) == 0 {
+			continue
+		}
+		fi := indexes[0]
+		g.seriesInPreviousEval[i] = from.seriesInPreviousEval[fi]
+		ruleMap[nameAndLabels] = indexes[1:]
+
+		ar, ok := rule.(*AlertingRule)
+		if !ok {
+			continue
+		}
+		far, ok := from.rules[fi].(*AlertingRule)
+		if !ok {
+			continue
+		}
+
+		for fp, a := range far.active {
+			ar.active[fp] = a
+		}
+	}
+
+	// Handle deleted and unmatched duplicate rules.
+	g.staleSeries = from.staleSeries
+	for fi, fromRule := range from.rules {
+		nameAndLabels := nameAndLabels(fromRule)
+		l := ruleMap[nameAndLabels]
+		if len(l) != 0 {
+			for _, series := range from.seriesInPreviousEval[fi] {
+				g.staleSeries = append(g.staleSeries, series)
+			}
+		}
+	}
+}
+
+// Eval runs a single evaluation cycle in which all rules are evaluated sequentially.
+func (g *Group) Eval(ctx context.Context, ts time.Time) {
+	var samplesTotal float64
+	for i, rule := range g.rules {
+		select {
+		case <-g.done:
+			return
+		default:
+		}
+
+		func(i int, rule Rule) {
+			ctx, sp := otel.Tracer("").Start(ctx, "rule")
+			sp.SetAttributes(attribute.String("name", rule.Name()))
+			defer func(t time.Time) {
+				sp.End()
+
+				since := time.Since(t)
+				g.metrics.EvalDuration.Observe(since.Seconds())
+				rule.SetEvaluationDuration(since)
+				rule.SetEvaluationTimestamp(t)
+			}(time.Now())
+
+			g.metrics.EvalTotal.WithLabelValues(GroupKey(g.File(), g.Name())).Inc()
+
+			vector, err := rule.Eval(ctx, ts, g.opts.QueryFunc, g.opts.ExternalURL, g.Limit())
+			if err != nil {
+				rule.SetHealth(HealthBad)
+				rule.SetLastError(err)
+				sp.SetStatus(codes.Error, err.Error())
+				g.metrics.EvalFailures.WithLabelValues(GroupKey(g.File(), g.Name())).Inc()
+
+				// Canceled queries are intentional termination of queries. This normally
+				// happens on shutdown and thus we skip logging of any errors here.
+				var eqc promql.ErrQueryCanceled
+				if !errors.As(err, &eqc) {
+					level.Warn(g.logger).Log("name", rule.Name(), "index", i, "msg", "Evaluating rule failed", "rule", rule, "err", err)
+				}
+				return
+			}
+			rule.SetHealth(HealthGood)
+			rule.SetLastError(nil)
+			samplesTotal += float64(len(vector))
+
+			if ar, ok := rule.(*AlertingRule); ok {
+				ar.sendAlerts(ctx, ts, g.opts.ResendDelay, g.interval, g.opts.NotifyFunc)
+			}
+			var (
+				numOutOfOrder = 0
+				numTooOld     = 0
+				numDuplicates = 0
+			)
+
+			app := g.opts.Appendable.Appender(ctx)
+			seriesReturned := make(map[string]labels.Labels, len(g.seriesInPreviousEval[i]))
+			defer func() {
+				if err := app.Commit(); err != nil {
+					rule.SetHealth(HealthBad)
+					rule.SetLastError(err)
+					sp.SetStatus(codes.Error, err.Error())
+					g.metrics.EvalFailures.WithLabelValues(GroupKey(g.File(), g.Name())).Inc()
+
+					level.Warn(g.logger).Log("name", rule.Name(), "index", i, "msg", "Rule sample appending failed", "err", err)
+					return
+				}
+				g.seriesInPreviousEval[i] = seriesReturned
+			}()
+
+			for _, s := range vector {
+				if s.H != nil {
+					_, err = app.AppendHistogram(0, s.Metric, s.T, nil, s.H)
+				} else {
+					_, err = app.Append(0, s.Metric, s.T, s.F)
+				}
+
+				if err != nil {
+					rule.SetHealth(HealthBad)
+					rule.SetLastError(err)
+					sp.SetStatus(codes.Error, err.Error())
+					unwrappedErr := errors.Unwrap(err)
+					if unwrappedErr == nil {
+						unwrappedErr = err
+					}
+					switch {
+					case errors.Is(unwrappedErr, storage.ErrOutOfOrderSample):
+						numOutOfOrder++
+						level.Debug(g.logger).Log("name", rule.Name(), "index", i, "msg", "Rule evaluation result discarded", "err", err, "sample", s)
+					case errors.Is(unwrappedErr, storage.ErrTooOldSample):
+						numTooOld++
+						level.Debug(g.logger).Log("name", rule.Name(), "index", i, "msg", "Rule evaluation result discarded", "err", err, "sample", s)
+					case errors.Is(unwrappedErr, storage.ErrDuplicateSampleForTimestamp):
+						numDuplicates++
+						level.Debug(g.logger).Log("name", rule.Name(), "index", i, "msg", "Rule evaluation result discarded", "err", err, "sample", s)
+					default:
+						level.Warn(g.logger).Log("name", rule.Name(), "index", i, "msg", "Rule evaluation result discarded", "err", err, "sample", s)
+					}
+				} else {
+					buf := [1024]byte{}
+					seriesReturned[string(s.Metric.Bytes(buf[:]))] = s.Metric
+				}
+			}
+			if numOutOfOrder > 0 {
+				level.Warn(g.logger).Log("name", rule.Name(), "index", i, "msg", "Error on ingesting out-of-order result from rule evaluation", "numDropped", numOutOfOrder)
+			}
+			if numTooOld > 0 {
+				level.Warn(g.logger).Log("name", rule.Name(), "index", i, "msg", "Error on ingesting too old result from rule evaluation", "numDropped", numTooOld)
+			}
+			if numDuplicates > 0 {
+				level.Warn(g.logger).Log("name", rule.Name(), "index", i, "msg", "Error on ingesting results from rule evaluation with different value but same timestamp", "numDropped", numDuplicates)
+			}
+
+			for metric, lset := range g.seriesInPreviousEval[i] {
+				if _, ok := seriesReturned[metric]; !ok {
+					// Series no longer exposed, mark it stale.
+					_, err = app.Append(0, lset, timestamp.FromTime(ts), math.Float64frombits(value.StaleNaN))
+					unwrappedErr := errors.Unwrap(err)
+					if unwrappedErr == nil {
+						unwrappedErr = err
+					}
+					switch {
+					case unwrappedErr == nil:
+					case errors.Is(unwrappedErr, storage.ErrOutOfOrderSample),
+						errors.Is(unwrappedErr, storage.ErrTooOldSample),
+						errors.Is(unwrappedErr, storage.ErrDuplicateSampleForTimestamp):
+						// Do not count these in logging, as this is expected if series
+						// is exposed from a different rule.
+					default:
+						level.Warn(g.logger).Log("name", rule.Name(), "index", i, "msg", "Adding stale sample failed", "sample", lset.String(), "err", err)
+					}
+				}
+			}
+		}(i, rule)
+	}
+	if g.metrics != nil {
+		g.metrics.GroupSamples.WithLabelValues(GroupKey(g.File(), g.Name())).Set(samplesTotal)
+	}
+	g.cleanupStaleSeries(ctx, ts)
+}
+
+func (g *Group) cleanupStaleSeries(ctx context.Context, ts time.Time) {
+	if len(g.staleSeries) == 0 {
+		return
+	}
+	app := g.opts.Appendable.Appender(ctx)
+	for _, s := range g.staleSeries {
+		// Rule that produced series no longer configured, mark it stale.
+		_, err := app.Append(0, s, timestamp.FromTime(ts), math.Float64frombits(value.StaleNaN))
+		unwrappedErr := errors.Unwrap(err)
+		if unwrappedErr == nil {
+			unwrappedErr = err
+		}
+		switch {
+		case unwrappedErr == nil:
+		case errors.Is(unwrappedErr, storage.ErrOutOfOrderSample),
+			errors.Is(unwrappedErr, storage.ErrTooOldSample),
+			errors.Is(unwrappedErr, storage.ErrDuplicateSampleForTimestamp):
+			// Do not count these in logging, as this is expected if series
+			// is exposed from a different rule.
+		default:
+			level.Warn(g.logger).Log("msg", "Adding stale sample for previous configuration failed", "sample", s, "err", err)
+		}
+	}
+	if err := app.Commit(); err != nil {
+		level.Warn(g.logger).Log("msg", "Stale sample appending for previous configuration failed", "err", err)
+	} else {
+		g.staleSeries = nil
+	}
+}
+
+// RestoreForState restores the 'for' state of the alerts
+// by looking up last ActiveAt from storage.
+func (g *Group) RestoreForState(ts time.Time) {
+	maxtMS := int64(model.TimeFromUnixNano(ts.UnixNano()))
+	// We allow restoration only if alerts were active before after certain time.
+	mint := ts.Add(-g.opts.OutageTolerance)
+	mintMS := int64(model.TimeFromUnixNano(mint.UnixNano()))
+	q, err := g.opts.Queryable.Querier(mintMS, maxtMS)
+	if err != nil {
+		level.Error(g.logger).Log("msg", "Failed to get Querier", "err", err)
+		return
+	}
+	defer func() {
+		if err := q.Close(); err != nil {
+			level.Error(g.logger).Log("msg", "Failed to close Querier", "err", err)
+		}
+	}()
+
+	for _, rule := range g.Rules() {
+		alertRule, ok := rule.(*AlertingRule)
+		if !ok {
+			continue
+		}
+
+		alertHoldDuration := alertRule.HoldDuration()
+		if alertHoldDuration < g.opts.ForGracePeriod {
+			// If alertHoldDuration is already less than grace period, we would not
+			// like to make it wait for `g.opts.ForGracePeriod` time before firing.
+			// Hence we skip restoration, which will make it wait for alertHoldDuration.
+			alertRule.SetRestored(true)
+			continue
+		}
+
+		alertRule.ForEachActiveAlert(func(a *Alert) {
+			var s storage.Series
+
+			s, err := alertRule.QueryforStateSeries(g.opts.Context, a, q)
+			if err != nil {
+				// Querier Warnings are ignored. We do not care unless we have an error.
+				level.Error(g.logger).Log(
+					"msg", "Failed to restore 'for' state",
+					labels.AlertName, alertRule.Name(),
+					"stage", "Select",
+					"err", err,
+				)
+				return
+			}
+
+			if s == nil {
+				return
+			}
+
+			// Series found for the 'for' state.
+			var t int64
+			var v float64
+			it := s.Iterator(nil)
+			for it.Next() == chunkenc.ValFloat {
+				t, v = it.At()
+			}
+			if it.Err() != nil {
+				level.Error(g.logger).Log("msg", "Failed to restore 'for' state",
+					labels.AlertName, alertRule.Name(), "stage", "Iterator", "err", it.Err())
+				return
+			}
+			if value.IsStaleNaN(v) { // Alert was not active.
+				return
+			}
+
+			downAt := time.Unix(t/1000, 0).UTC()
+			restoredActiveAt := time.Unix(int64(v), 0).UTC()
+			timeSpentPending := downAt.Sub(restoredActiveAt)
+			timeRemainingPending := alertHoldDuration - timeSpentPending
+
+			switch {
+			case timeRemainingPending <= 0:
+				// It means that alert was firing when prometheus went down.
+				// In the next Eval, the state of this alert will be set back to
+				// firing again if it's still firing in that Eval.
+				// Nothing to be done in this case.
+			case timeRemainingPending < g.opts.ForGracePeriod:
+				// (new) restoredActiveAt = (ts + m.opts.ForGracePeriod) - alertHoldDuration
+				//                            /* new firing time */      /* moving back by hold duration */
+				//
+				// Proof of correctness:
+				// firingTime = restoredActiveAt.Add(alertHoldDuration)
+				//            = ts + m.opts.ForGracePeriod - alertHoldDuration + alertHoldDuration
+				//            = ts + m.opts.ForGracePeriod
+				//
+				// Time remaining to fire = firingTime.Sub(ts)
+				//                        = (ts + m.opts.ForGracePeriod) - ts
+				//                        = m.opts.ForGracePeriod
+				restoredActiveAt = ts.Add(g.opts.ForGracePeriod).Add(-alertHoldDuration)
+			default:
+				// By shifting ActiveAt to the future (ActiveAt + some_duration),
+				// the total pending time from the original ActiveAt
+				// would be `alertHoldDuration + some_duration`.
+				// Here, some_duration = downDuration.
+				downDuration := ts.Sub(downAt)
+				restoredActiveAt = restoredActiveAt.Add(downDuration)
+			}
+
+			a.ActiveAt = restoredActiveAt
+			level.Debug(g.logger).Log("msg", "'for' state restored",
+				labels.AlertName, alertRule.Name(), "restored_time", a.ActiveAt.Format(time.RFC850),
+				"labels", a.Labels.String())
+		})
+
+		alertRule.SetRestored(true)
+	}
+}
+
+// Equals return if two groups are the same.
+func (g *Group) Equals(ng *Group) bool {
+	if g.name != ng.name {
+		return false
+	}
+
+	if g.file != ng.file {
+		return false
+	}
+
+	if g.interval != ng.interval {
+		return false
+	}
+
+	if g.limit != ng.limit {
+		return false
+	}
+
+	if len(g.rules) != len(ng.rules) {
+		return false
+	}
+
+	for i, gr := range g.rules {
+		if gr.String() != ng.rules[i].String() {
+			return false
+		}
+	}
+
+	return true
+}
+
+// GroupKey group names need not be unique across filenames.
+func GroupKey(file, name string) string {
+	return file + ";" + name
+}
+
+// Constants for instrumentation.
+const namespace = "prometheus"
+
+// Metrics for rule evaluation.
+type Metrics struct {
+	EvalDuration        prometheus.Summary
+	IterationDuration   prometheus.Summary
+	IterationsMissed    *prometheus.CounterVec
+	IterationsScheduled *prometheus.CounterVec
+	EvalTotal           *prometheus.CounterVec
+	EvalFailures        *prometheus.CounterVec
+	GroupInterval       *prometheus.GaugeVec
+	GroupLastEvalTime   *prometheus.GaugeVec
+	GroupLastDuration   *prometheus.GaugeVec
+	GroupRules          *prometheus.GaugeVec
+	GroupSamples        *prometheus.GaugeVec
+}
+
+// NewGroupMetrics creates a new instance of Metrics and registers it with the provided registerer,
+// if not nil.
+func NewGroupMetrics(reg prometheus.Registerer) *Metrics {
+	m := &Metrics{
+		EvalDuration: prometheus.NewSummary(
+			prometheus.SummaryOpts{
+				Namespace:  namespace,
+				Name:       "rule_evaluation_duration_seconds",
+				Help:       "The duration for a rule to execute.",
+				Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001},
+			}),
+		IterationDuration: prometheus.NewSummary(prometheus.SummaryOpts{
+			Namespace:  namespace,
+			Name:       "rule_group_duration_seconds",
+			Help:       "The duration of rule group evaluations.",
+			Objectives: map[float64]float64{0.01: 0.001, 0.05: 0.005, 0.5: 0.05, 0.90: 0.01, 0.99: 0.001},
+		}),
+		IterationsMissed: prometheus.NewCounterVec(
+			prometheus.CounterOpts{
+				Namespace: namespace,
+				Name:      "rule_group_iterations_missed_total",
+				Help:      "The total number of rule group evaluations missed due to slow rule group evaluation.",
+			},
+			[]string{"rule_group"},
+		),
+		IterationsScheduled: prometheus.NewCounterVec(
+			prometheus.CounterOpts{
+				Namespace: namespace,
+				Name:      "rule_group_iterations_total",
+				Help:      "The total number of scheduled rule group evaluations, whether executed or missed.",
+			},
+			[]string{"rule_group"},
+		),
+		EvalTotal: prometheus.NewCounterVec(
+			prometheus.CounterOpts{
+				Namespace: namespace,
+				Name:      "rule_evaluations_total",
+				Help:      "The total number of rule evaluations.",
+			},
+			[]string{"rule_group"},
+		),
+		EvalFailures: prometheus.NewCounterVec(
+			prometheus.CounterOpts{
+				Namespace: namespace,
+				Name:      "rule_evaluation_failures_total",
+				Help:      "The total number of rule evaluation failures.",
+			},
+			[]string{"rule_group"},
+		),
+		GroupInterval: prometheus.NewGaugeVec(
+			prometheus.GaugeOpts{
+				Namespace: namespace,
+				Name:      "rule_group_interval_seconds",
+				Help:      "The interval of a rule group.",
+			},
+			[]string{"rule_group"},
+		),
+		GroupLastEvalTime: prometheus.NewGaugeVec(
+			prometheus.GaugeOpts{
+				Namespace: namespace,
+				Name:      "rule_group_last_evaluation_timestamp_seconds",
+				Help:      "The timestamp of the last rule group evaluation in seconds.",
+			},
+			[]string{"rule_group"},
+		),
+		GroupLastDuration: prometheus.NewGaugeVec(
+			prometheus.GaugeOpts{
+				Namespace: namespace,
+				Name:      "rule_group_last_duration_seconds",
+				Help:      "The duration of the last rule group evaluation.",
+			},
+			[]string{"rule_group"},
+		),
+		GroupRules: prometheus.NewGaugeVec(
+			prometheus.GaugeOpts{
+				Namespace: namespace,
+				Name:      "rule_group_rules",
+				Help:      "The number of rules.",
+			},
+			[]string{"rule_group"},
+		),
+		GroupSamples: prometheus.NewGaugeVec(
+			prometheus.GaugeOpts{
+				Namespace: namespace,
+				Name:      "rule_group_last_evaluation_samples",
+				Help:      "The number of samples returned during the last rule group evaluation.",
+			},
+			[]string{"rule_group"},
+		),
+	}
+
+	if reg != nil {
+		reg.MustRegister(
+			m.EvalDuration,
+			m.IterationDuration,
+			m.IterationsMissed,
+			m.IterationsScheduled,
+			m.EvalTotal,
+			m.EvalFailures,
+			m.GroupInterval,
+			m.GroupLastEvalTime,
+			m.GroupLastDuration,
+			m.GroupRules,
+			m.GroupSamples,
+		)
+	}
+
+	return m
+}

rules/manager.go

@@ -17,7 +17,6 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"math"
 	"net/url"
 	"strings"
 	"sync"
@@ -26,162 +25,17 @@ import (
 	"github.com/go-kit/log"
 	"github.com/go-kit/log/level"
 	"github.com/prometheus/client_golang/prometheus"
-	"github.com/prometheus/common/model"
-	"go.opentelemetry.io/otel"
-	"go.opentelemetry.io/otel/attribute"
-	"go.opentelemetry.io/otel/codes"
 	"golang.org/x/exp/slices"
 
 	"github.com/prometheus/prometheus/model/labels"
 	"github.com/prometheus/prometheus/model/rulefmt"
-	"github.com/prometheus/prometheus/model/timestamp"
-	"github.com/prometheus/prometheus/model/value"
 	"github.com/prometheus/prometheus/notifier"
 	"github.com/prometheus/prometheus/promql"
 	"github.com/prometheus/prometheus/promql/parser"
 	"github.com/prometheus/prometheus/storage"
-	"github.com/prometheus/prometheus/tsdb/chunkenc"
 	"github.com/prometheus/prometheus/util/strutil"
 )
 
-// RuleHealth describes the health state of a rule.
-type RuleHealth string
-
-// The possible health states of a rule based on the last execution.
-const (
-	HealthUnknown RuleHealth = "unknown"
-	HealthGood    RuleHealth = "ok"
-	HealthBad     RuleHealth = "err"
-)
-
-// Constants for instrumentation.
-const namespace = "prometheus"
-
-// Metrics for rule evaluation.
-type Metrics struct {
-	EvalDuration        prometheus.Summary
-	IterationDuration   prometheus.Summary
-	IterationsMissed    *prometheus.CounterVec
-	IterationsScheduled *prometheus.CounterVec
-	EvalTotal           *prometheus.CounterVec
-	EvalFailures        *prometheus.CounterVec
-	GroupInterval       *prometheus.GaugeVec
-	GroupLastEvalTime   *prometheus.GaugeVec
-	GroupLastDuration   *prometheus.GaugeVec
-	GroupRules          *prometheus.GaugeVec
-	GroupSamples        *prometheus.GaugeVec
-}
-
-// NewGroupMetrics creates a new instance of Metrics and registers it with the provided registerer,
-// if not nil.
-func NewGroupMetrics(reg prometheus.Registerer) *Metrics {
-	m := &Metrics{
-		EvalDuration: prometheus.NewSummary(
-			prometheus.SummaryOpts{
-				Namespace:  namespace,
-				Name:       "rule_evaluation_duration_seconds",
-				Help:       "The duration for a rule to execute.",
-				Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001},
-			}),
-		IterationDuration: prometheus.NewSummary(prometheus.SummaryOpts{
-			Namespace:  namespace,
-			Name:       "rule_group_duration_seconds",
-			Help:       "The duration of rule group evaluations.",
-			Objectives: map[float64]float64{0.01: 0.001, 0.05: 0.005, 0.5: 0.05, 0.90: 0.01, 0.99: 0.001},
-		}),
-		IterationsMissed: prometheus.NewCounterVec(
-			prometheus.CounterOpts{
-				Namespace: namespace,
-				Name:      "rule_group_iterations_missed_total",
-				Help:      "The total number of rule group evaluations missed due to slow rule group evaluation.",
-			},
-			[]string{"rule_group"},
-		),
-		IterationsScheduled: prometheus.NewCounterVec(
-			prometheus.CounterOpts{
-				Namespace: namespace,
-				Name:      "rule_group_iterations_total",
-				Help:      "The total number of scheduled rule group evaluations, whether executed or missed.",
-			},
-			[]string{"rule_group"},
-		),
-		EvalTotal: prometheus.NewCounterVec(
-			prometheus.CounterOpts{
-				Namespace: namespace,
-				Name:      "rule_evaluations_total",
-				Help:      "The total number of rule evaluations.",
-			},
-			[]string{"rule_group"},
-		),
-		EvalFailures: prometheus.NewCounterVec(
-			prometheus.CounterOpts{
-				Namespace: namespace,
-				Name:      "rule_evaluation_failures_total",
-				Help:      "The total number of rule evaluation failures.",
-			},
-			[]string{"rule_group"},
-		),
-		GroupInterval: prometheus.NewGaugeVec(
-			prometheus.GaugeOpts{
-				Namespace: namespace,
-				Name:      "rule_group_interval_seconds",
-				Help:      "The interval of a rule group.",
-			},
-			[]string{"rule_group"},
-		),
-		GroupLastEvalTime: prometheus.NewGaugeVec(
-			prometheus.GaugeOpts{
-				Namespace: namespace,
-				Name:      "rule_group_last_evaluation_timestamp_seconds",
-				Help:      "The timestamp of the last rule group evaluation in seconds.",
-			},
-			[]string{"rule_group"},
-		),
-		GroupLastDuration: prometheus.NewGaugeVec(
-			prometheus.GaugeOpts{
-				Namespace: namespace,
-				Name:      "rule_group_last_duration_seconds",
-				Help:      "The duration of the last rule group evaluation.",
-			},
-			[]string{"rule_group"},
-		),
-		GroupRules: prometheus.NewGaugeVec(
-			prometheus.GaugeOpts{
-				Namespace: namespace,
-				Name:      "rule_group_rules",
-				Help:      "The number of rules.",
-			},
-			[]string{"rule_group"},
-		),
-		GroupSamples: prometheus.NewGaugeVec(
-			prometheus.GaugeOpts{
-				Namespace: namespace,
-				Name:      "rule_group_last_evaluation_samples",
-				Help:      "The number of samples returned during the last rule group evaluation.",
-			},
-			[]string{"rule_group"},
-		),
-	}
-
-	if reg != nil {
-		reg.MustRegister(
-			m.EvalDuration,
-			m.IterationDuration,
-			m.IterationsMissed,
-			m.IterationsScheduled,
-			m.EvalTotal,
-			m.EvalFailures,
-			m.GroupInterval,
-			m.GroupLastEvalTime,
-			m.GroupLastDuration,
-			m.GroupRules,
-			m.GroupSamples,
-		)
-	}
-
-	return m
-}
-
 // QueryFunc processes PromQL queries.
 type QueryFunc func(ctx context.Context, q string, t time.Time) (promql.Vector, error)
 
@@ -213,241 +67,6 @@ func EngineQueryFunc(engine *promql.Engine, q storage.Queryable) QueryFunc {
 	}
 }
 
-// A Rule encapsulates a vector expression which is evaluated at a specified
-// interval and acted upon (currently either recorded or used for alerting).
-type Rule interface {
-	Name() string
-	// Labels of the rule.
-	Labels() labels.Labels
-	// eval evaluates the rule, including any associated recording or alerting actions.
-	Eval(context.Context, time.Time, QueryFunc, *url.URL, int) (promql.Vector, error)
-	// String returns a human-readable string representation of the rule.
-	String() string
-	// Query returns the rule query expression.
-	Query() parser.Expr
-	// SetLastErr sets the current error experienced by the rule.
-	SetLastError(error)
-	// LastErr returns the last error experienced by the rule.
-	LastError() error
-	// SetHealth sets the current health of the rule.
-	SetHealth(RuleHealth)
-	// Health returns the current health of the rule.
-	Health() RuleHealth
-	SetEvaluationDuration(time.Duration)
-	// GetEvaluationDuration returns last evaluation duration.
-	// NOTE: Used dynamically by rules.html template.
-	GetEvaluationDuration() time.Duration
-	SetEvaluationTimestamp(time.Time)
-	// GetEvaluationTimestamp returns last evaluation timestamp.
-	// NOTE: Used dynamically by rules.html template.
-	GetEvaluationTimestamp() time.Time
-}
-
-// Group is a set of rules that have a logical relation.
-type Group struct {
-	name                 string
-	file                 string
-	interval             time.Duration
-	limit                int
-	rules                []Rule
-	seriesInPreviousEval []map[string]labels.Labels // One per Rule.
-	staleSeries          []labels.Labels
-	opts                 *ManagerOptions
-	mtx                  sync.Mutex
-	evaluationTime       time.Duration
-	lastEvaluation       time.Time // Wall-clock time of most recent evaluation.
-	lastEvalTimestamp    time.Time // Time slot used for most recent evaluation.
-
-	shouldRestore bool
-
-	markStale   bool
-	done        chan struct{}
-	terminated  chan struct{}
-	managerDone chan struct{}
-
-	logger log.Logger
-
-	metrics *Metrics
-
-	// Rule group evaluation iteration function,
-	// defaults to DefaultEvalIterationFunc.
-	evalIterationFunc GroupEvalIterationFunc
-}
-
-// GroupEvalIterationFunc is used to implement and extend rule group
-// evaluation iteration logic. It is configured in Group.evalIterationFunc,
-// and periodically invoked at each group evaluation interval to
-// evaluate the rules in the group at that point in time.
-// DefaultEvalIterationFunc is the default implementation.
-type GroupEvalIterationFunc func(ctx context.Context, g *Group, evalTimestamp time.Time)
-
-type GroupOptions struct {
-	Name, File        string
-	Interval          time.Duration
-	Limit             int
-	Rules             []Rule
-	ShouldRestore     bool
-	Opts              *ManagerOptions
-	done              chan struct{}
-	EvalIterationFunc GroupEvalIterationFunc
-}
-
-// NewGroup makes a new Group with the given name, options, and rules.
-func NewGroup(o GroupOptions) *Group {
-	metrics := o.Opts.Metrics
-	if metrics == nil {
-		metrics = NewGroupMetrics(o.Opts.Registerer)
-	}
-
-	key := GroupKey(o.File, o.Name)
-	metrics.IterationsMissed.WithLabelValues(key)
-	metrics.IterationsScheduled.WithLabelValues(key)
-	metrics.EvalTotal.WithLabelValues(key)
-	metrics.EvalFailures.WithLabelValues(key)
-	metrics.GroupLastEvalTime.WithLabelValues(key)
-	metrics.GroupLastDuration.WithLabelValues(key)
-	metrics.GroupRules.WithLabelValues(key).Set(float64(len(o.Rules)))
-	metrics.GroupSamples.WithLabelValues(key)
-	metrics.GroupInterval.WithLabelValues(key).Set(o.Interval.Seconds())
-
-	evalIterationFunc := o.EvalIterationFunc
-	if evalIterationFunc == nil {
-		evalIterationFunc = DefaultEvalIterationFunc
-	}
-
-	return &Group{
-		name:                 o.Name,
-		file:                 o.File,
-		interval:             o.Interval,
-		limit:                o.Limit,
-		rules:                o.Rules,
-		shouldRestore:        o.ShouldRestore,
-		opts:                 o.Opts,
-		seriesInPreviousEval: make([]map[string]labels.Labels, len(o.Rules)),
-		done:                 make(chan struct{}),
-		managerDone:          o.done,
-		terminated:           make(chan struct{}),
-		logger:               log.With(o.Opts.Logger, "file", o.File, "group", o.Name),
-		metrics:              metrics,
-		evalIterationFunc:    evalIterationFunc,
-	}
-}
-
-// Name returns the group name.
-func (g *Group) Name() string { return g.name }
-
-// File returns the group's file.
-func (g *Group) File() string { return g.file }
-
-// Rules returns the group's rules.
-func (g *Group) Rules() []Rule { return g.rules }
-
-// Queryable returns the group's querable.
-func (g *Group) Queryable() storage.Queryable { return g.opts.Queryable }
-
-// Context returns the group's context.
-func (g *Group) Context() context.Context { return g.opts.Context }
-
-// Interval returns the group's interval.
-func (g *Group) Interval() time.Duration { return g.interval }
-
-// Limit returns the group's limit.
-func (g *Group) Limit() int { return g.limit }
-
-func (g *Group) Logger() log.Logger { return g.logger }
-
-func (g *Group) run(ctx context.Context) {
-	defer close(g.terminated)
-
-	// Wait an initial amount to have consistently slotted intervals.
-	evalTimestamp := g.EvalTimestamp(time.Now().UnixNano()).Add(g.interval)
-	select {
-	case <-time.After(time.Until(evalTimestamp)):
-	case <-g.done:
-		return
-	}
-
-	ctx = promql.NewOriginContext(ctx, map[string]interface{}{
-		"ruleGroup": map[string]string{
-			"file": g.File(),
-			"name": g.Name(),
-		},
-	})
-
-	// The assumption here is that since the ticker was started after having
-	// waited for `evalTimestamp` to pass, the ticks will trigger soon
-	// after each `evalTimestamp + N * g.interval` occurrence.
-	tick := time.NewTicker(g.interval)
-	defer tick.Stop()
-
-	defer func() {
-		if !g.markStale {
-			return
-		}
-		go func(now time.Time) {
-			for _, rule := range g.seriesInPreviousEval {
-				for _, r := range rule {
-					g.staleSeries = append(g.staleSeries, r)
-				}
-			}
-			// That can be garbage collected at this point.
-			g.seriesInPreviousEval = nil
-			// Wait for 2 intervals to give the opportunity to renamed rules
-			// to insert new series in the tsdb. At this point if there is a
-			// renamed rule, it should already be started.
-			select {
-			case <-g.managerDone:
-			case <-time.After(2 * g.interval):
-				g.cleanupStaleSeries(ctx, now)
-			}
-		}(time.Now())
-	}()
-
-	g.evalIterationFunc(ctx, g, evalTimestamp)
-	if g.shouldRestore {
-		// If we have to restore, we wait for another Eval to finish.
-		// The reason behind this is, during first eval (or before it)
-		// we might not have enough data scraped, and recording rules would not
-		// have updated the latest values, on which some alerts might depend.
-		select {
-		case <-g.done:
-			return
-		case <-tick.C:
-			missed := (time.Since(evalTimestamp) / g.interval) - 1
-			if missed > 0 {
-				g.metrics.IterationsMissed.WithLabelValues(GroupKey(g.file, g.name)).Add(float64(missed))
-				g.metrics.IterationsScheduled.WithLabelValues(GroupKey(g.file, g.name)).Add(float64(missed))
-			}
-			evalTimestamp = evalTimestamp.Add((missed + 1) * g.interval)
-			g.evalIterationFunc(ctx, g, evalTimestamp)
-		}
-
-		g.RestoreForState(time.Now())
-		g.shouldRestore = false
-	}
-
-	for {
-		select {
-		case <-g.done:
-			return
-		default:
-			select {
-			case <-g.done:
-				return
-			case <-tick.C:
-				missed := (time.Since(evalTimestamp) / g.interval) - 1
-				if missed > 0 {
-					g.metrics.IterationsMissed.WithLabelValues(GroupKey(g.file, g.name)).Add(float64(missed))
-					g.metrics.IterationsScheduled.WithLabelValues(GroupKey(g.file, g.name)).Add(float64(missed))
-				}
-				evalTimestamp = evalTimestamp.Add((missed + 1) * g.interval)
-
-				g.evalIterationFunc(ctx, g, evalTimestamp)
-			}
-		}
-	}
-}
-
 // DefaultEvalIterationFunc is the default implementation of
 // GroupEvalIterationFunc that is periodically invoked to evaluate the rules
 // in a group at a given point in time and updates Group state and metrics
@@ -467,491 +86,6 @@ func DefaultEvalIterationFunc(ctx context.Context, g *Group, evalTimestamp time.
 	g.setLastEvalTimestamp(evalTimestamp)
 }
 
-func (g *Group) stop() {
-	close(g.done)
-	<-g.terminated
-}
-
-func (g *Group) hash() uint64 {
-	l := labels.New(
-		labels.Label{Name: "name", Value: g.name},
-		labels.Label{Name: "file", Value: g.file},
-	)
-	return l.Hash()
-}
-
-// AlertingRules returns the list of the group's alerting rules.
-func (g *Group) AlertingRules() []*AlertingRule {
-	g.mtx.Lock()
-	defer g.mtx.Unlock()
-
-	var alerts []*AlertingRule
-	for _, rule := range g.rules {
-		if alertingRule, ok := rule.(*AlertingRule); ok {
-			alerts = append(alerts, alertingRule)
-		}
-	}
-	slices.SortFunc(alerts, func(a, b *AlertingRule) int {
-		if a.State() == b.State() {
-			return strings.Compare(a.Name(), b.Name())
-		}
-		return int(b.State() - a.State())
-	})
-	return alerts
-}
-
-// HasAlertingRules returns true if the group contains at least one AlertingRule.
-func (g *Group) HasAlertingRules() bool {
-	g.mtx.Lock()
-	defer g.mtx.Unlock()
-
-	for _, rule := range g.rules {
-		if _, ok := rule.(*AlertingRule); ok {
-			return true
-		}
-	}
-	return false
-}
-
-// GetEvaluationTime returns the time in seconds it took to evaluate the rule group.
-func (g *Group) GetEvaluationTime() time.Duration {
-	g.mtx.Lock()
-	defer g.mtx.Unlock()
-	return g.evaluationTime
-}
-
-// setEvaluationTime sets the time in seconds the last evaluation took.
-func (g *Group) setEvaluationTime(dur time.Duration) {
-	g.metrics.GroupLastDuration.WithLabelValues(GroupKey(g.file, g.name)).Set(dur.Seconds())
-
-	g.mtx.Lock()
-	defer g.mtx.Unlock()
-	g.evaluationTime = dur
-}
-
-// GetLastEvaluation returns the time the last evaluation of the rule group took place.
-func (g *Group) GetLastEvaluation() time.Time {
-	g.mtx.Lock()
-	defer g.mtx.Unlock()
-	return g.lastEvaluation
-}
-
-// setLastEvaluation updates evaluationTimestamp to the timestamp of when the rule group was last evaluated.
-func (g *Group) setLastEvaluation(ts time.Time) {
-	g.metrics.GroupLastEvalTime.WithLabelValues(GroupKey(g.file, g.name)).Set(float64(ts.UnixNano()) / 1e9)
-
-	g.mtx.Lock()
-	defer g.mtx.Unlock()
-	g.lastEvaluation = ts
-}
-
-// GetLastEvalTimestamp returns the timestamp of the last evaluation.
-func (g *Group) GetLastEvalTimestamp() time.Time {
-	g.mtx.Lock()
-	defer g.mtx.Unlock()
-	return g.lastEvalTimestamp
-}
-
-// setLastEvalTimestamp updates lastEvalTimestamp to the timestamp of the last evaluation.
-func (g *Group) setLastEvalTimestamp(ts time.Time) {
-	g.mtx.Lock()
-	defer g.mtx.Unlock()
-	g.lastEvalTimestamp = ts
-}
-
-// EvalTimestamp returns the immediately preceding consistently slotted evaluation time.
-func (g *Group) EvalTimestamp(startTime int64) time.Time {
-	var (
-		offset = int64(g.hash() % uint64(g.interval))
-
-		// This group's evaluation times differ from the perfect time intervals by `offset` nanoseconds.
-		// But we can only use `% interval` to align with the interval. And `% interval` will always
-		// align with the perfect time intervals, instead of this group's. Because of this we add
-		// `offset` _after_ aligning with the perfect time interval.
-		//
-		// There can be cases where adding `offset` to the perfect evaluation time can yield a
-		// timestamp in the future, which is not what EvalTimestamp should do.
-		// So we subtract one `offset` to make sure that `now - (now % interval) + offset` gives an
-		// evaluation time in the past.
-		adjNow = startTime - offset
-
-		// Adjust to perfect evaluation intervals.
-		base = adjNow - (adjNow % int64(g.interval))
-
-		// Add one offset to randomize the evaluation times of this group.
-		next = base + offset
-	)
-
-	return time.Unix(0, next).UTC()
-}
-
-func nameAndLabels(rule Rule) string {
-	return rule.Name() + rule.Labels().String()
-}
-
-// CopyState copies the alerting rule and staleness related state from the given group.
-//
-// Rules are matched based on their name and labels. If there are duplicates, the
-// first is matched with the first, second with the second etc.
-func (g *Group) CopyState(from *Group) {
-	g.evaluationTime = from.evaluationTime
-	g.lastEvaluation = from.lastEvaluation
-
-	ruleMap := make(map[string][]int, len(from.rules))
-
-	for fi, fromRule := range from.rules {
-		nameAndLabels := nameAndLabels(fromRule)
-		l := ruleMap[nameAndLabels]
-		ruleMap[nameAndLabels] = append(l, fi)
-	}
-
-	for i, rule := range g.rules {
-		nameAndLabels := nameAndLabels(rule)
-		indexes := ruleMap[nameAndLabels]
-		if len(indexes) == 0 {
-			continue
-		}
-		fi := indexes[0]
-		g.seriesInPreviousEval[i] = from.seriesInPreviousEval[fi]
-		ruleMap[nameAndLabels] = indexes[1:]
-
-		ar, ok := rule.(*AlertingRule)
-		if !ok {
-			continue
-		}
-		far, ok := from.rules[fi].(*AlertingRule)
-		if !ok {
-			continue
-		}
-
-		for fp, a := range far.active {
-			ar.active[fp] = a
-		}
-	}
-
-	// Handle deleted and unmatched duplicate rules.
-	g.staleSeries = from.staleSeries
-	for fi, fromRule := range from.rules {
-		nameAndLabels := nameAndLabels(fromRule)
-		l := ruleMap[nameAndLabels]
-		if len(l) != 0 {
-			for _, series := range from.seriesInPreviousEval[fi] {
-				g.staleSeries = append(g.staleSeries, series)
-			}
-		}
-	}
-}
-
-// Eval runs a single evaluation cycle in which all rules are evaluated sequentially.
-func (g *Group) Eval(ctx context.Context, ts time.Time) {
-	var samplesTotal float64
-	for i, rule := range g.rules {
-		select {
-		case <-g.done:
-			return
-		default:
-		}
-
-		func(i int, rule Rule) {
-			ctx, sp := otel.Tracer("").Start(ctx, "rule")
-			sp.SetAttributes(attribute.String("name", rule.Name()))
-			defer func(t time.Time) {
-				sp.End()
-
-				since := time.Since(t)
-				g.metrics.EvalDuration.Observe(since.Seconds())
-				rule.SetEvaluationDuration(since)
-				rule.SetEvaluationTimestamp(t)
-			}(time.Now())
-
-			g.metrics.EvalTotal.WithLabelValues(GroupKey(g.File(), g.Name())).Inc()
-
-			vector, err := rule.Eval(ctx, ts, g.opts.QueryFunc, g.opts.ExternalURL, g.Limit())
-			if err != nil {
-				rule.SetHealth(HealthBad)
-				rule.SetLastError(err)
-				sp.SetStatus(codes.Error, err.Error())
-				g.metrics.EvalFailures.WithLabelValues(GroupKey(g.File(), g.Name())).Inc()
-
-				// Canceled queries are intentional termination of queries. This normally
-				// happens on shutdown and thus we skip logging of any errors here.
-				var eqc promql.ErrQueryCanceled
-				if !errors.As(err, &eqc) {
-					level.Warn(g.logger).Log("name", rule.Name(), "index", i, "msg", "Evaluating rule failed", "rule", rule, "err", err)
-				}
-				return
-			}
-			rule.SetHealth(HealthGood)
-			rule.SetLastError(nil)
-			samplesTotal += float64(len(vector))
-
-			if ar, ok := rule.(*AlertingRule); ok {
-				ar.sendAlerts(ctx, ts, g.opts.ResendDelay, g.interval, g.opts.NotifyFunc)
-			}
-			var (
-				numOutOfOrder = 0
-				numTooOld     = 0
-				numDuplicates = 0
-			)
-
-			app := g.opts.Appendable.Appender(ctx)
-			seriesReturned := make(map[string]labels.Labels, len(g.seriesInPreviousEval[i]))
-			defer func() {
-				if err := app.Commit(); err != nil {
-					rule.SetHealth(HealthBad)
-					rule.SetLastError(err)
-					sp.SetStatus(codes.Error, err.Error())
-					g.metrics.EvalFailures.WithLabelValues(GroupKey(g.File(), g.Name())).Inc()
-
-					level.Warn(g.logger).Log("name", rule.Name(), "index", i, "msg", "Rule sample appending failed", "err", err)
-					return
-				}
-				g.seriesInPreviousEval[i] = seriesReturned
-			}()
-
-			for _, s := range vector {
-				if s.H != nil {
-					_, err = app.AppendHistogram(0, s.Metric, s.T, nil, s.H)
-				} else {
-					_, err = app.Append(0, s.Metric, s.T, s.F)
-				}
-
-				if err != nil {
-					rule.SetHealth(HealthBad)
-					rule.SetLastError(err)
-					sp.SetStatus(codes.Error, err.Error())
-					unwrappedErr := errors.Unwrap(err)
-					if unwrappedErr == nil {
-						unwrappedErr = err
-					}
-					switch {
-					case errors.Is(unwrappedErr, storage.ErrOutOfOrderSample):
-						numOutOfOrder++
-						level.Debug(g.logger).Log("name", rule.Name(), "index", i, "msg", "Rule evaluation result discarded", "err", err, "sample", s)
-					case errors.Is(unwrappedErr, storage.ErrTooOldSample):
-						numTooOld++
-						level.Debug(g.logger).Log("name", rule.Name(), "index", i, "msg", "Rule evaluation result discarded", "err", err, "sample", s)
-					case errors.Is(unwrappedErr, storage.ErrDuplicateSampleForTimestamp):
-						numDuplicates++
-						level.Debug(g.logger).Log("name", rule.Name(), "index", i, "msg", "Rule evaluation result discarded", "err", err, "sample", s)
-					default:
-						level.Warn(g.logger).Log("name", rule.Name(), "index", i, "msg", "Rule evaluation result discarded", "err", err, "sample", s)
-					}
-				} else {
-					buf := [1024]byte{}
-					seriesReturned[string(s.Metric.Bytes(buf[:]))] = s.Metric
-				}
-			}
-			if numOutOfOrder > 0 {
-				level.Warn(g.logger).Log("name", rule.Name(), "index", i, "msg", "Error on ingesting out-of-order result from rule evaluation", "numDropped", numOutOfOrder)
-			}
-			if numTooOld > 0 {
-				level.Warn(g.logger).Log("name", rule.Name(), "index", i, "msg", "Error on ingesting too old result from rule evaluation", "numDropped", numTooOld)
-			}
-			if numDuplicates > 0 {
-				level.Warn(g.logger).Log("name", rule.Name(), "index", i, "msg", "Error on ingesting results from rule evaluation with different value but same timestamp", "numDropped", numDuplicates)
-			}
-
-			for metric, lset := range g.seriesInPreviousEval[i] {
-				if _, ok := seriesReturned[metric]; !ok {
-					// Series no longer exposed, mark it stale.
-					_, err = app.Append(0, lset, timestamp.FromTime(ts), math.Float64frombits(value.StaleNaN))
-					unwrappedErr := errors.Unwrap(err)
-					if unwrappedErr == nil {
-						unwrappedErr = err
-					}
-					switch {
-					case unwrappedErr == nil:
-					case errors.Is(unwrappedErr, storage.ErrOutOfOrderSample),
-						errors.Is(unwrappedErr, storage.ErrTooOldSample),
-						errors.Is(unwrappedErr, storage.ErrDuplicateSampleForTimestamp):
-						// Do not count these in logging, as this is expected if series
-						// is exposed from a different rule.
-					default:
-						level.Warn(g.logger).Log("name", rule.Name(), "index", i, "msg", "Adding stale sample failed", "sample", lset.String(), "err", err)
-					}
-				}
-			}
-		}(i, rule)
-	}
-	if g.metrics != nil {
-		g.metrics.GroupSamples.WithLabelValues(GroupKey(g.File(), g.Name())).Set(samplesTotal)
-	}
-	g.cleanupStaleSeries(ctx, ts)
-}
-
-func (g *Group) cleanupStaleSeries(ctx context.Context, ts time.Time) {
-	if len(g.staleSeries) == 0 {
-		return
-	}
-	app := g.opts.Appendable.Appender(ctx)
-	for _, s := range g.staleSeries {
-		// Rule that produced series no longer configured, mark it stale.
-		_, err := app.Append(0, s, timestamp.FromTime(ts), math.Float64frombits(value.StaleNaN))
-		unwrappedErr := errors.Unwrap(err)
-		if unwrappedErr == nil {
-			unwrappedErr = err
-		}
-		switch {
-		case unwrappedErr == nil:
-		case errors.Is(unwrappedErr, storage.ErrOutOfOrderSample),
-			errors.Is(unwrappedErr, storage.ErrTooOldSample),
-			errors.Is(unwrappedErr, storage.ErrDuplicateSampleForTimestamp):
-			// Do not count these in logging, as this is expected if series
-			// is exposed from a different rule.
-		default:
-			level.Warn(g.logger).Log("msg", "Adding stale sample for previous configuration failed", "sample", s, "err", err)
-		}
-	}
-	if err := app.Commit(); err != nil {
-		level.Warn(g.logger).Log("msg", "Stale sample appending for previous configuration failed", "err", err)
-	} else {
-		g.staleSeries = nil
-	}
-}
-
-// RestoreForState restores the 'for' state of the alerts
-// by looking up last ActiveAt from storage.
-func (g *Group) RestoreForState(ts time.Time) {
-	maxtMS := int64(model.TimeFromUnixNano(ts.UnixNano()))
-	// We allow restoration only if alerts were active before after certain time.
-	mint := ts.Add(-g.opts.OutageTolerance)
-	mintMS := int64(model.TimeFromUnixNano(mint.UnixNano()))
-	q, err := g.opts.Queryable.Querier(mintMS, maxtMS)
-	if err != nil {
-		level.Error(g.logger).Log("msg", "Failed to get Querier", "err", err)
-		return
-	}
-	defer func() {
-		if err := q.Close(); err != nil {
-			level.Error(g.logger).Log("msg", "Failed to close Querier", "err", err)
-		}
-	}()
-
-	for _, rule := range g.Rules() {
-		alertRule, ok := rule.(*AlertingRule)
-		if !ok {
-			continue
-		}
-
-		alertHoldDuration := alertRule.HoldDuration()
-		if alertHoldDuration < g.opts.ForGracePeriod {
-			// If alertHoldDuration is already less than grace period, we would not
-			// like to make it wait for `g.opts.ForGracePeriod` time before firing.
-			// Hence we skip restoration, which will make it wait for alertHoldDuration.
-			alertRule.SetRestored(true)
-			continue
-		}
-
-		alertRule.ForEachActiveAlert(func(a *Alert) {
-			var s storage.Series
-
-			s, err := alertRule.QueryforStateSeries(g.opts.Context, a, q)
-			if err != nil {
-				// Querier Warnings are ignored. We do not care unless we have an error.
-				level.Error(g.logger).Log(
-					"msg", "Failed to restore 'for' state",
-					labels.AlertName, alertRule.Name(),
-					"stage", "Select",
-					"err", err,
-				)
-				return
-			}
-
-			if s == nil {
-				return
-			}
-
-			// Series found for the 'for' state.
-			var t int64
-			var v float64
-			it := s.Iterator(nil)
-			for it.Next() == chunkenc.ValFloat {
-				t, v = it.At()
-			}
-			if it.Err() != nil {
-				level.Error(g.logger).Log("msg", "Failed to restore 'for' state",
-					labels.AlertName, alertRule.Name(), "stage", "Iterator", "err", it.Err())
-				return
-			}
-			if value.IsStaleNaN(v) { // Alert was not active.
-				return
-			}
-
-			downAt := time.Unix(t/1000, 0).UTC()
-			restoredActiveAt := time.Unix(int64(v), 0).UTC()
-			timeSpentPending := downAt.Sub(restoredActiveAt)
-			timeRemainingPending := alertHoldDuration - timeSpentPending
-
-			switch {
-			case timeRemainingPending <= 0:
-				// It means that alert was firing when prometheus went down.
-				// In the next Eval, the state of this alert will be set back to
-				// firing again if it's still firing in that Eval.
-				// Nothing to be done in this case.
-			case timeRemainingPending < g.opts.ForGracePeriod:
-				// (new) restoredActiveAt = (ts + m.opts.ForGracePeriod) - alertHoldDuration
-				//                            /* new firing time */      /* moving back by hold duration */
-				//
-				// Proof of correctness:
-				// firingTime = restoredActiveAt.Add(alertHoldDuration)
-				//            = ts + m.opts.ForGracePeriod - alertHoldDuration + alertHoldDuration
-				//            = ts + m.opts.ForGracePeriod
-				//
-				// Time remaining to fire = firingTime.Sub(ts)
-				//                        = (ts + m.opts.ForGracePeriod) - ts
-				//                        = m.opts.ForGracePeriod
-				restoredActiveAt = ts.Add(g.opts.ForGracePeriod).Add(-alertHoldDuration)
-			default:
-				// By shifting ActiveAt to the future (ActiveAt + some_duration),
-				// the total pending time from the original ActiveAt
-				// would be `alertHoldDuration + some_duration`.
-				// Here, some_duration = downDuration.
-				downDuration := ts.Sub(downAt)
-				restoredActiveAt = restoredActiveAt.Add(downDuration)
-			}
-
-			a.ActiveAt = restoredActiveAt
-			level.Debug(g.logger).Log("msg", "'for' state restored",
-				labels.AlertName, alertRule.Name(), "restored_time", a.ActiveAt.Format(time.RFC850),
-				"labels", a.Labels.String())
-		})
-
-		alertRule.SetRestored(true)
-	}
-}
-
-// Equals return if two groups are the same.
-func (g *Group) Equals(ng *Group) bool {
-	if g.name != ng.name {
-		return false
-	}
-
-	if g.file != ng.file {
-		return false
-	}
-
-	if g.interval != ng.interval {
-		return false
-	}
-
-	if g.limit != ng.limit {
-		return false
-	}
-
-	if len(g.rules) != len(ng.rules) {
-		return false
-	}
-
-	for i, gr := range g.rules {
-		if gr.String() != ng.rules[i].String() {
-			return false
-		}
-	}
-
-	return true
-}
-
 // The Manager manages recording and alerting rules.
 type Manager struct {
 	opts     *ManagerOptions
@@ -1191,11 +325,6 @@ func (m *Manager) LoadGroups(
 	return groups, nil
 }
 
-// GroupKey group names need not be unique across filenames.
-func GroupKey(file, name string) string {
-	return file + ";" + name
-}
-
 // RuleGroups returns the list of manager's rule groups.
 func (m *Manager) RuleGroups() []*Group {
 	m.mtx.RLock()

rules/rule.go

@@ -0,0 +1,64 @@
+// Copyright 2013 The Prometheus Authors
+// 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 rules
+
+import (
+	"context"
+	"net/url"
+	"time"
+
+	"github.com/prometheus/prometheus/model/labels"
+	"github.com/prometheus/prometheus/promql"
+	"github.com/prometheus/prometheus/promql/parser"
+)
+
+// RuleHealth describes the health state of a rule.
+type RuleHealth string
+
+// The possible health states of a rule based on the last execution.
+const (
+	HealthUnknown RuleHealth = "unknown"
+	HealthGood    RuleHealth = "ok"
+	HealthBad     RuleHealth = "err"
+)
+
+// A Rule encapsulates a vector expression which is evaluated at a specified
+// interval and acted upon (currently either recorded or used for alerting).
+type Rule interface {
+	Name() string
+	// Labels of the rule.
+	Labels() labels.Labels
+	// Eval evaluates the rule, including any associated recording or alerting actions.
+	Eval(context.Context, time.Time, QueryFunc, *url.URL, int) (promql.Vector, error)
+	// String returns a human-readable string representation of the rule.
+	String() string
+	// Query returns the rule query expression.
+	Query() parser.Expr
+	// SetLastError sets the current error experienced by the rule.
+	SetLastError(error)
+	// LastError returns the last error experienced by the rule.
+	LastError() error
+	// SetHealth sets the current health of the rule.
+	SetHealth(RuleHealth)
+	// Health returns the current health of the rule.
+	Health() RuleHealth
+	SetEvaluationDuration(time.Duration)
+	// GetEvaluationDuration returns last evaluation duration.
+	// NOTE: Used dynamically by rules.html template.
+	GetEvaluationDuration() time.Duration
+	SetEvaluationTimestamp(time.Time)
+	// GetEvaluationTimestamp returns last evaluation timestamp.
+	// NOTE: Used dynamically by rules.html template.
+	GetEvaluationTimestamp() time.Time
+}

scrape/manager.go

@@ -34,80 +34,20 @@ import (
 	"github.com/prometheus/prometheus/util/osutil"
 )
 
-var targetMetadataCache = newMetadataMetricsCollector()
-
-// MetadataMetricsCollector is a Custom Collector for the metadata cache metrics.
-type MetadataMetricsCollector struct {
-	CacheEntries *prometheus.Desc
-	CacheBytes   *prometheus.Desc
-
-	scrapeManager *Manager
-}
-
-func newMetadataMetricsCollector() *MetadataMetricsCollector {
-	return &MetadataMetricsCollector{
-		CacheEntries: prometheus.NewDesc(
-			"prometheus_target_metadata_cache_entries",
-			"Total number of metric metadata entries in the cache",
-			[]string{"scrape_job"},
-			nil,
-		),
-		CacheBytes: prometheus.NewDesc(
-			"prometheus_target_metadata_cache_bytes",
-			"The number of bytes that are currently used for storing metric metadata in the cache",
-			[]string{"scrape_job"},
-			nil,
-		),
-	}
-}
-
-func (mc *MetadataMetricsCollector) registerManager(m *Manager) {
-	mc.scrapeManager = m
-}
-
-// Describe sends the metrics descriptions to the channel.
-func (mc *MetadataMetricsCollector) Describe(ch chan<- *prometheus.Desc) {
-	ch <- mc.CacheEntries
-	ch <- mc.CacheBytes
-}
-
-// Collect creates and sends the metrics for the metadata cache.
-func (mc *MetadataMetricsCollector) Collect(ch chan<- prometheus.Metric) {
-	if mc.scrapeManager == nil {
-		return
-	}
-
-	for tset, targets := range mc.scrapeManager.TargetsActive() {
-		var size, length int
-		for _, t := range targets {
-			size += t.MetadataSize()
-			length += t.MetadataLength()
-		}
-
-		ch <- prometheus.MustNewConstMetric(
-			mc.CacheEntries,
-			prometheus.GaugeValue,
-			float64(length),
-			tset,
-		)
-
-		ch <- prometheus.MustNewConstMetric(
-			mc.CacheBytes,
-			prometheus.GaugeValue,
-			float64(size),
-			tset,
-		)
-	}
-}
-
 // NewManager is the Manager constructor
-func NewManager(o *Options, logger log.Logger, app storage.Appendable) *Manager {
+func NewManager(o *Options, logger log.Logger, app storage.Appendable, registerer prometheus.Registerer) (*Manager, error) {
 	if o == nil {
 		o = &Options{}
 	}
 	if logger == nil {
 		logger = log.NewNopLogger()
 	}
+
+	sm, err := newScrapeMetrics(registerer)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create scrape manager due to error: %w", err)
+	}
+
 	m := &Manager{
 		append:        app,
 		opts:          o,
@@ -116,10 +56,12 @@ func NewManager(o *Options, logger log.Logger, app storage.Appendable) *Manager
 		scrapePools:   make(map[string]*scrapePool),
 		graceShut:     make(chan struct{}),
 		triggerReload: make(chan struct{}, 1),
+		metrics:       sm,
 	}
-	targetMetadataCache.registerManager(m)
 
-	return m
+	m.metrics.setTargetMetadataCacheGatherer(m)
+
+	return m, nil
 }
 
 // Options are the configuration parameters to the scrape manager.
@@ -132,9 +74,6 @@ type Options struct {
 	// Option to enable the experimental in-memory metadata storage and append
 	// metadata to the WAL.
 	EnableMetadataStorage bool
-	// Option to enable protobuf negotiation with the client. Note that the client can already
-	// send protobuf without needing to enable this.
-	EnableProtobufNegotiation bool
 	// Option to increase the interval used by scrape manager to throttle target groups updates.
 	DiscoveryReloadInterval model.Duration
 
@@ -157,6 +96,8 @@ type Manager struct {
 	targetSets    map[string][]*targetgroup.Group
 
 	triggerReload chan struct{}
+
+	metrics *scrapeMetrics
 }
 
 // Run receives and saves target set updates and triggers the scraping loops reloading.
@@ -214,8 +155,10 @@ func (m *Manager) reload() {
 				level.Error(m.logger).Log("msg", "error reloading target set", "err", "invalid config id:"+setName)
 				continue
 			}
-			sp, err := newScrapePool(scrapeConfig, m.append, m.offsetSeed, log.With(m.logger, "scrape_pool", setName), m.opts)
+			m.metrics.targetScrapePools.Inc()
+			sp, err := newScrapePool(scrapeConfig, m.append, m.offsetSeed, log.With(m.logger, "scrape_pool", setName), m.opts, m.metrics)
 			if err != nil {
+				m.metrics.targetScrapePoolsFailed.Inc()
 				level.Error(m.logger).Log("msg", "error creating new scrape pool", "err", err, "scrape_pool", setName)
 				continue
 			}

scrape/manager_test.go

@@ -20,6 +20,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/common/model"
 	"github.com/stretchr/testify/require"
 	"gopkg.in/yaml.v2"
@@ -492,10 +493,13 @@ scrape_configs:
 		cfg3 = loadConfiguration(t, cfgText3)
 
 		ch = make(chan struct{}, 1)
+
+		testRegistry = prometheus.NewRegistry()
 	)
 
 	opts := Options{}
-	scrapeManager := NewManager(&opts, nil, nil)
+	scrapeManager, err := NewManager(&opts, nil, nil, testRegistry)
+	require.NoError(t, err)
 	newLoop := func(scrapeLoopOptions) loop {
 		ch <- struct{}{}
 		return noopLoop()
@@ -512,6 +516,7 @@ scrape_configs:
 		logger:  nil,
 		config:  cfg1.ScrapeConfigs[0],
 		client:  http.DefaultClient,
+		metrics: scrapeManager.metrics,
 	}
 	scrapeManager.scrapePools = map[string]*scrapePool{
 		"job1": sp,
@@ -560,7 +565,9 @@ scrape_configs:
 
 func TestManagerTargetsUpdates(t *testing.T) {
 	opts := Options{}
-	m := NewManager(&opts, nil, nil)
+	testRegistry := prometheus.NewRegistry()
+	m, err := NewManager(&opts, nil, nil, testRegistry)
+	require.NoError(t, err)
 
 	ts := make(chan map[string][]*targetgroup.Group)
 	go m.Run(ts)
@@ -613,7 +620,9 @@ global:
 	}
 
 	opts := Options{}
-	scrapeManager := NewManager(&opts, nil, nil)
+	testRegistry := prometheus.NewRegistry()
+	scrapeManager, err := NewManager(&opts, nil, nil, testRegistry)
+	require.NoError(t, err)
 
 	// Load the first config.
 	cfg1 := getConfig("ha1")
@@ -658,8 +667,9 @@ scrape_configs:
   - targets: ["foo:9093"]
 `
 	var (
-		cfg1 = loadConfiguration(t, cfgText1)
+		cfg1         = loadConfiguration(t, cfgText1)
-		cfg2 = loadConfiguration(t, cfgText2)
+		cfg2         = loadConfiguration(t, cfgText2)
+		testRegistry = prometheus.NewRegistry()
 	)
 
 	reload := func(scrapeManager *Manager, cfg *config.Config) {
@@ -695,7 +705,8 @@ scrape_configs:
 	}
 
 	opts := Options{}
-	scrapeManager := NewManager(&opts, nil, nil)
+	scrapeManager, err := NewManager(&opts, nil, nil, testRegistry)
+	require.NoError(t, err)
 
 	reload(scrapeManager, cfg1)
 	require.ElementsMatch(t, []string{"job1", "job2"}, scrapeManager.ScrapePools())

scrape/metrics.go

@@ -0,0 +1,307 @@
+// Copyright 2016 The Prometheus Authors
+// 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 scrape
+
+import (
+	"fmt"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+type scrapeMetrics struct {
+	// Used by Manager.
+	targetMetadataCache     *MetadataMetricsCollector
+	targetScrapePools       prometheus.Counter
+	targetScrapePoolsFailed prometheus.Counter
+
+	// Used by scrapePool.
+	targetReloadIntervalLength          *prometheus.SummaryVec
+	targetScrapePoolReloads             prometheus.Counter
+	targetScrapePoolReloadsFailed       prometheus.Counter
+	targetScrapePoolSyncsCounter        *prometheus.CounterVec
+	targetScrapePoolExceededTargetLimit prometheus.Counter
+	targetScrapePoolTargetLimit         *prometheus.GaugeVec
+	targetScrapePoolTargetsAdded        *prometheus.GaugeVec
+	targetSyncIntervalLength            *prometheus.SummaryVec
+	targetSyncFailed                    *prometheus.CounterVec
+
+	// Used by targetScraper.
+	targetScrapeExceededBodySizeLimit prometheus.Counter
+
+	// Used by scrapeCache.
+	targetScrapeCacheFlushForced prometheus.Counter
+
+	// Used by scrapeLoop.
+	targetIntervalLength                   *prometheus.SummaryVec
+	targetScrapeSampleLimit                prometheus.Counter
+	targetScrapeSampleDuplicate            prometheus.Counter
+	targetScrapeSampleOutOfOrder           prometheus.Counter
+	targetScrapeSampleOutOfBounds          prometheus.Counter
+	targetScrapeExemplarOutOfOrder         prometheus.Counter
+	targetScrapePoolExceededLabelLimits    prometheus.Counter
+	targetScrapeNativeHistogramBucketLimit prometheus.Counter
+}
+
+func newScrapeMetrics(reg prometheus.Registerer) (*scrapeMetrics, error) {
+	sm := &scrapeMetrics{}
+
+	// Manager metrics.
+	sm.targetMetadataCache = &MetadataMetricsCollector{
+		CacheEntries: prometheus.NewDesc(
+			"prometheus_target_metadata_cache_entries",
+			"Total number of metric metadata entries in the cache",
+			[]string{"scrape_job"},
+			nil,
+		),
+		CacheBytes: prometheus.NewDesc(
+			"prometheus_target_metadata_cache_bytes",
+			"The number of bytes that are currently used for storing metric metadata in the cache",
+			[]string{"scrape_job"},
+			nil,
+		),
+		// TargetsGatherer should be set later, because it's a circular dependency.
+		// newScrapeMetrics() is called by NewManager(), while also TargetsGatherer is the new Manager.
+	}
+
+	sm.targetScrapePools = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "prometheus_target_scrape_pools_total",
+			Help: "Total number of scrape pool creation attempts.",
+		},
+	)
+	sm.targetScrapePoolsFailed = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "prometheus_target_scrape_pools_failed_total",
+			Help: "Total number of scrape pool creations that failed.",
+		},
+	)
+
+	// Used by scrapePool.
+	sm.targetReloadIntervalLength = prometheus.NewSummaryVec(
+		prometheus.SummaryOpts{
+			Name:       "prometheus_target_reload_length_seconds",
+			Help:       "Actual interval to reload the scrape pool with a given configuration.",
+			Objectives: map[float64]float64{0.01: 0.001, 0.05: 0.005, 0.5: 0.05, 0.90: 0.01, 0.99: 0.001},
+		},
+		[]string{"interval"},
+	)
+	sm.targetScrapePoolReloads = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "prometheus_target_scrape_pool_reloads_total",
+			Help: "Total number of scrape pool reloads.",
+		},
+	)
+	sm.targetScrapePoolReloadsFailed = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "prometheus_target_scrape_pool_reloads_failed_total",
+			Help: "Total number of failed scrape pool reloads.",
+		},
+	)
+	sm.targetScrapePoolExceededTargetLimit = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "prometheus_target_scrape_pool_exceeded_target_limit_total",
+			Help: "Total number of times scrape pools hit the target limit, during sync or config reload.",
+		},
+	)
+	sm.targetScrapePoolTargetLimit = prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Name: "prometheus_target_scrape_pool_target_limit",
+			Help: "Maximum number of targets allowed in this scrape pool.",
+		},
+		[]string{"scrape_job"},
+	)
+	sm.targetScrapePoolTargetsAdded = prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Name: "prometheus_target_scrape_pool_targets",
+			Help: "Current number of targets in this scrape pool.",
+		},
+		[]string{"scrape_job"},
+	)
+	sm.targetScrapePoolSyncsCounter = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "prometheus_target_scrape_pool_sync_total",
+			Help: "Total number of syncs that were executed on a scrape pool.",
+		},
+		[]string{"scrape_job"},
+	)
+	sm.targetSyncIntervalLength = prometheus.NewSummaryVec(
+		prometheus.SummaryOpts{
+			Name:       "prometheus_target_sync_length_seconds",
+			Help:       "Actual interval to sync the scrape pool.",
+			Objectives: map[float64]float64{0.01: 0.001, 0.05: 0.005, 0.5: 0.05, 0.90: 0.01, 0.99: 0.001},
+		},
+		[]string{"scrape_job"},
+	)
+	sm.targetSyncFailed = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "prometheus_target_sync_failed_total",
+			Help: "Total number of target sync failures.",
+		},
+		[]string{"scrape_job"},
+	)
+
+	// Used by targetScraper.
+	sm.targetScrapeExceededBodySizeLimit = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "prometheus_target_scrapes_exceeded_body_size_limit_total",
+			Help: "Total number of scrapes that hit the body size limit",
+		},
+	)
+
+	// Used by scrapeCache.
+	sm.targetScrapeCacheFlushForced = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "prometheus_target_scrapes_cache_flush_forced_total",
+			Help: "How many times a scrape cache was flushed due to getting big while scrapes are failing.",
+		},
+	)
+
+	// Used by scrapeLoop.
+	sm.targetIntervalLength = prometheus.NewSummaryVec(
+		prometheus.SummaryOpts{
+			Name:       "prometheus_target_interval_length_seconds",
+			Help:       "Actual intervals between scrapes.",
+			Objectives: map[float64]float64{0.01: 0.001, 0.05: 0.005, 0.5: 0.05, 0.90: 0.01, 0.99: 0.001},
+		},
+		[]string{"interval"},
+	)
+	sm.targetScrapeSampleLimit = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "prometheus_target_scrapes_exceeded_sample_limit_total",
+			Help: "Total number of scrapes that hit the sample limit and were rejected.",
+		},
+	)
+	sm.targetScrapeSampleDuplicate = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "prometheus_target_scrapes_sample_duplicate_timestamp_total",
+			Help: "Total number of samples rejected due to duplicate timestamps but different values.",
+		},
+	)
+	sm.targetScrapeSampleOutOfOrder = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "prometheus_target_scrapes_sample_out_of_order_total",
+			Help: "Total number of samples rejected due to not being out of the expected order.",
+		},
+	)
+	sm.targetScrapeSampleOutOfBounds = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "prometheus_target_scrapes_sample_out_of_bounds_total",
+			Help: "Total number of samples rejected due to timestamp falling outside of the time bounds.",
+		},
+	)
+	sm.targetScrapePoolExceededLabelLimits = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "prometheus_target_scrape_pool_exceeded_label_limits_total",
+			Help: "Total number of times scrape pools hit the label limits, during sync or config reload.",
+		},
+	)
+	sm.targetScrapeNativeHistogramBucketLimit = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "prometheus_target_scrapes_exceeded_native_histogram_bucket_limit_total",
+			Help: "Total number of scrapes that hit the native histogram bucket limit and were rejected.",
+		},
+	)
+	sm.targetScrapeExemplarOutOfOrder = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "prometheus_target_scrapes_exemplar_out_of_order_total",
+			Help: "Total number of exemplar rejected due to not being out of the expected order.",
+		},
+	)
+
+	for _, collector := range []prometheus.Collector{
+		// Used by Manager.
+		sm.targetMetadataCache,
+		sm.targetScrapePools,
+		sm.targetScrapePoolsFailed,
+		// Used by scrapePool.
+		sm.targetReloadIntervalLength,
+		sm.targetScrapePoolReloads,
+		sm.targetScrapePoolReloadsFailed,
+		sm.targetSyncIntervalLength,
+		sm.targetScrapePoolSyncsCounter,
+		sm.targetScrapePoolExceededTargetLimit,
+		sm.targetScrapePoolTargetLimit,
+		sm.targetScrapePoolTargetsAdded,
+		sm.targetSyncFailed,
+		// Used by targetScraper.
+		sm.targetScrapeExceededBodySizeLimit,
+		// Used by scrapeCache.
+		sm.targetScrapeCacheFlushForced,
+		// Used by scrapeLoop.
+		sm.targetIntervalLength,
+		sm.targetScrapeSampleLimit,
+		sm.targetScrapeSampleDuplicate,
+		sm.targetScrapeSampleOutOfOrder,
+		sm.targetScrapeSampleOutOfBounds,
+		sm.targetScrapeExemplarOutOfOrder,
+		sm.targetScrapePoolExceededLabelLimits,
+		sm.targetScrapeNativeHistogramBucketLimit,
+	} {
+		err := reg.Register(collector)
+		if err != nil {
+			return nil, fmt.Errorf("failed to register scrape metrics: %w", err)
+		}
+	}
+	return sm, nil
+}
+
+func (sm *scrapeMetrics) setTargetMetadataCacheGatherer(gatherer TargetsGatherer) {
+	sm.targetMetadataCache.TargetsGatherer = gatherer
+}
+
+type TargetsGatherer interface {
+	TargetsActive() map[string][]*Target
+}
+
+// MetadataMetricsCollector is a Custom Collector for the metadata cache metrics.
+type MetadataMetricsCollector struct {
+	CacheEntries    *prometheus.Desc
+	CacheBytes      *prometheus.Desc
+	TargetsGatherer TargetsGatherer
+}
+
+// Describe sends the metrics descriptions to the channel.
+func (mc *MetadataMetricsCollector) Describe(ch chan<- *prometheus.Desc) {
+	ch <- mc.CacheEntries
+	ch <- mc.CacheBytes
+}
+
+// Collect creates and sends the metrics for the metadata cache.
+func (mc *MetadataMetricsCollector) Collect(ch chan<- prometheus.Metric) {
+	if mc.TargetsGatherer == nil {
+		return
+	}
+
+	for tset, targets := range mc.TargetsGatherer.TargetsActive() {
+		var size, length int
+		for _, t := range targets {
+			size += t.MetadataSize()
+			length += t.MetadataLength()
+		}
+
+		ch <- prometheus.MustNewConstMetric(
+			mc.CacheEntries,
+			prometheus.GaugeValue,
+			float64(length),
+			tset,
+		)
+
+		ch <- prometheus.MustNewConstMetric(
+			mc.CacheBytes,
+			prometheus.GaugeValue,
+			float64(size),
+			tset,
+		)
+	}
+}

scrape/scrape.go

@@ -24,13 +24,13 @@ import (
 	"net/http"
 	"reflect"
 	"strconv"
+	"strings"
 	"sync"
 	"time"
 
 	"github.com/go-kit/log"
 	"github.com/go-kit/log/level"
 	"github.com/pkg/errors"
-	"github.com/prometheus/client_golang/prometheus"
 	config_util "github.com/prometheus/common/config"
 	"github.com/prometheus/common/model"
 	"github.com/prometheus/common/version"
@@ -60,172 +60,6 @@ var AlignScrapeTimestamps = true
 
 var errNameLabelMandatory = fmt.Errorf("missing metric name (%s label)", labels.MetricName)
 
-var (
-	targetIntervalLength = prometheus.NewSummaryVec(
-		prometheus.SummaryOpts{
-			Name:       "prometheus_target_interval_length_seconds",
-			Help:       "Actual intervals between scrapes.",
-			Objectives: map[float64]float64{0.01: 0.001, 0.05: 0.005, 0.5: 0.05, 0.90: 0.01, 0.99: 0.001},
-		},
-		[]string{"interval"},
-	)
-	targetReloadIntervalLength = prometheus.NewSummaryVec(
-		prometheus.SummaryOpts{
-			Name:       "prometheus_target_reload_length_seconds",
-			Help:       "Actual interval to reload the scrape pool with a given configuration.",
-			Objectives: map[float64]float64{0.01: 0.001, 0.05: 0.005, 0.5: 0.05, 0.90: 0.01, 0.99: 0.001},
-		},
-		[]string{"interval"},
-	)
-	targetScrapePools = prometheus.NewCounter(
-		prometheus.CounterOpts{
-			Name: "prometheus_target_scrape_pools_total",
-			Help: "Total number of scrape pool creation attempts.",
-		},
-	)
-	targetScrapePoolsFailed = prometheus.NewCounter(
-		prometheus.CounterOpts{
-			Name: "prometheus_target_scrape_pools_failed_total",
-			Help: "Total number of scrape pool creations that failed.",
-		},
-	)
-	targetScrapePoolReloads = prometheus.NewCounter(
-		prometheus.CounterOpts{
-			Name: "prometheus_target_scrape_pool_reloads_total",
-			Help: "Total number of scrape pool reloads.",
-		},
-	)
-	targetScrapePoolReloadsFailed = prometheus.NewCounter(
-		prometheus.CounterOpts{
-			Name: "prometheus_target_scrape_pool_reloads_failed_total",
-			Help: "Total number of failed scrape pool reloads.",
-		},
-	)
-	targetScrapePoolExceededTargetLimit = prometheus.NewCounter(
-		prometheus.CounterOpts{
-			Name: "prometheus_target_scrape_pool_exceeded_target_limit_total",
-			Help: "Total number of times scrape pools hit the target limit, during sync or config reload.",
-		},
-	)
-	targetScrapePoolTargetLimit = prometheus.NewGaugeVec(
-		prometheus.GaugeOpts{
-			Name: "prometheus_target_scrape_pool_target_limit",
-			Help: "Maximum number of targets allowed in this scrape pool.",
-		},
-		[]string{"scrape_job"},
-	)
-	targetScrapePoolTargetsAdded = prometheus.NewGaugeVec(
-		prometheus.GaugeOpts{
-			Name: "prometheus_target_scrape_pool_targets",
-			Help: "Current number of targets in this scrape pool.",
-		},
-		[]string{"scrape_job"},
-	)
-	targetSyncIntervalLength = prometheus.NewSummaryVec(
-		prometheus.SummaryOpts{
-			Name:       "prometheus_target_sync_length_seconds",
-			Help:       "Actual interval to sync the scrape pool.",
-			Objectives: map[float64]float64{0.01: 0.001, 0.05: 0.005, 0.5: 0.05, 0.90: 0.01, 0.99: 0.001},
-		},
-		[]string{"scrape_job"},
-	)
-	targetScrapePoolSyncsCounter = prometheus.NewCounterVec(
-		prometheus.CounterOpts{
-			Name: "prometheus_target_scrape_pool_sync_total",
-			Help: "Total number of syncs that were executed on a scrape pool.",
-		},
-		[]string{"scrape_job"},
-	)
-	targetScrapeExceededBodySizeLimit = prometheus.NewCounter(
-		prometheus.CounterOpts{
-			Name: "prometheus_target_scrapes_exceeded_body_size_limit_total",
-			Help: "Total number of scrapes that hit the body size limit",
-		},
-	)
-	targetScrapeSampleLimit = prometheus.NewCounter(
-		prometheus.CounterOpts{
-			Name: "prometheus_target_scrapes_exceeded_sample_limit_total",
-			Help: "Total number of scrapes that hit the sample limit and were rejected.",
-		},
-	)
-	targetScrapeSampleDuplicate = prometheus.NewCounter(
-		prometheus.CounterOpts{
-			Name: "prometheus_target_scrapes_sample_duplicate_timestamp_total",
-			Help: "Total number of samples rejected due to duplicate timestamps but different values.",
-		},
-	)
-	targetScrapeSampleOutOfOrder = prometheus.NewCounter(
-		prometheus.CounterOpts{
-			Name: "prometheus_target_scrapes_sample_out_of_order_total",
-			Help: "Total number of samples rejected due to not being out of the expected order.",
-		},
-	)
-	targetScrapeSampleOutOfBounds = prometheus.NewCounter(
-		prometheus.CounterOpts{
-			Name: "prometheus_target_scrapes_sample_out_of_bounds_total",
-			Help: "Total number of samples rejected due to timestamp falling outside of the time bounds.",
-		},
-	)
-	targetScrapeCacheFlushForced = prometheus.NewCounter(
-		prometheus.CounterOpts{
-			Name: "prometheus_target_scrapes_cache_flush_forced_total",
-			Help: "How many times a scrape cache was flushed due to getting big while scrapes are failing.",
-		},
-	)
-	targetScrapeExemplarOutOfOrder = prometheus.NewCounter(
-		prometheus.CounterOpts{
-			Name: "prometheus_target_scrapes_exemplar_out_of_order_total",
-			Help: "Total number of exemplar rejected due to not being out of the expected order.",
-		},
-	)
-	targetScrapePoolExceededLabelLimits = prometheus.NewCounter(
-		prometheus.CounterOpts{
-			Name: "prometheus_target_scrape_pool_exceeded_label_limits_total",
-			Help: "Total number of times scrape pools hit the label limits, during sync or config reload.",
-		},
-	)
-	targetSyncFailed = prometheus.NewCounterVec(
-		prometheus.CounterOpts{
-			Name: "prometheus_target_sync_failed_total",
-			Help: "Total number of target sync failures.",
-		},
-		[]string{"scrape_job"},
-	)
-	targetScrapeNativeHistogramBucketLimit = prometheus.NewCounter(
-		prometheus.CounterOpts{
-			Name: "prometheus_target_scrapes_exceeded_native_histogram_bucket_limit_total",
-			Help: "Total number of scrapes that hit the native histogram bucket limit and were rejected.",
-		},
-	)
-)
-
-func init() {
-	prometheus.MustRegister(
-		targetIntervalLength,
-		targetReloadIntervalLength,
-		targetScrapePools,
-		targetScrapePoolsFailed,
-		targetScrapePoolReloads,
-		targetScrapePoolReloadsFailed,
-		targetSyncIntervalLength,
-		targetScrapePoolSyncsCounter,
-		targetScrapeExceededBodySizeLimit,
-		targetScrapeSampleLimit,
-		targetScrapeSampleDuplicate,
-		targetScrapeSampleOutOfOrder,
-		targetScrapeSampleOutOfBounds,
-		targetScrapePoolExceededTargetLimit,
-		targetScrapePoolTargetLimit,
-		targetScrapePoolTargetsAdded,
-		targetScrapeCacheFlushForced,
-		targetMetadataCache,
-		targetScrapeExemplarOutOfOrder,
-		targetScrapePoolExceededLabelLimits,
-		targetSyncFailed,
-		targetScrapeNativeHistogramBucketLimit,
-	)
-}
-
 // scrapePool manages scrapes for sets of targets.
 type scrapePool struct {
 	appendable storage.Appendable
@@ -251,7 +85,7 @@ type scrapePool struct {
 
 	noDefaultPort bool
 
-	enableProtobufNegotiation bool
+	metrics *scrapeMetrics
 }
 
 type labelLimits struct {
@@ -280,15 +114,13 @@ const maxAheadTime = 10 * time.Minute
 // returning an empty label set is interpreted as "drop"
 type labelsMutator func(labels.Labels) labels.Labels
 
-func newScrapePool(cfg *config.ScrapeConfig, app storage.Appendable, offsetSeed uint64, logger log.Logger, options *Options) (*scrapePool, error) {
+func newScrapePool(cfg *config.ScrapeConfig, app storage.Appendable, offsetSeed uint64, logger log.Logger, options *Options, metrics *scrapeMetrics) (*scrapePool, error) {
-	targetScrapePools.Inc()
 	if logger == nil {
 		logger = log.NewNopLogger()
 	}
 
 	client, err := config_util.NewClientFromConfig(cfg.HTTPClientConfig, cfg.JobName, options.HTTPClientOptions...)
 	if err != nil {
-		targetScrapePoolsFailed.Inc()
 		return nil, errors.Wrap(err, "error creating HTTP client")
 	}
 
@@ -296,22 +128,22 @@ func newScrapePool(cfg *config.ScrapeConfig, app storage.Appendable, offsetSeed
 
 	ctx, cancel := context.WithCancel(context.Background())
 	sp := &scrapePool{
-		cancel:                    cancel,
+		cancel:        cancel,
-		appendable:                app,
+		appendable:    app,
-		config:                    cfg,
+		config:        cfg,
-		client:                    client,
+		client:        client,
-		activeTargets:             map[uint64]*Target{},
+		activeTargets: map[uint64]*Target{},
-		loops:                     map[uint64]loop{},
+		loops:         map[uint64]loop{},
-		logger:                    logger,
+		logger:        logger,
-		httpOpts:                  options.HTTPClientOptions,
+		metrics:       metrics,
-		noDefaultPort:             options.NoDefaultPort,
+		httpOpts:      options.HTTPClientOptions,
-		enableProtobufNegotiation: options.EnableProtobufNegotiation,
+		noDefaultPort: options.NoDefaultPort,
 	}
 	sp.newLoop = func(opts scrapeLoopOptions) loop {
 		// Update the targets retrieval function for metadata to a new scrape cache.
 		cache := opts.cache
 		if cache == nil {
-			cache = newScrapeCache()
+			cache = newScrapeCache(metrics)
 		}
 		opts.target.SetMetadataStore(cache)
 
@@ -338,9 +170,10 @@ func newScrapePool(cfg *config.ScrapeConfig, app storage.Appendable, offsetSeed
 			options.EnableMetadataStorage,
 			opts.target,
 			options.PassMetadataInContext,
+			metrics,
 		)
 	}
-	targetScrapePoolTargetLimit.WithLabelValues(sp.config.JobName).Set(float64(sp.config.TargetLimit))
+	sp.metrics.targetScrapePoolTargetLimit.WithLabelValues(sp.config.JobName).Set(float64(sp.config.TargetLimit))
 	return sp, nil
 }
 
@@ -395,11 +228,11 @@ func (sp *scrapePool) stop() {
 	sp.client.CloseIdleConnections()
 
 	if sp.config != nil {
-		targetScrapePoolSyncsCounter.DeleteLabelValues(sp.config.JobName)
+		sp.metrics.targetScrapePoolSyncsCounter.DeleteLabelValues(sp.config.JobName)
-		targetScrapePoolTargetLimit.DeleteLabelValues(sp.config.JobName)
+		sp.metrics.targetScrapePoolTargetLimit.DeleteLabelValues(sp.config.JobName)
-		targetScrapePoolTargetsAdded.DeleteLabelValues(sp.config.JobName)
+		sp.metrics.targetScrapePoolTargetsAdded.DeleteLabelValues(sp.config.JobName)
-		targetSyncIntervalLength.DeleteLabelValues(sp.config.JobName)
+		sp.metrics.targetSyncIntervalLength.DeleteLabelValues(sp.config.JobName)
-		targetSyncFailed.DeleteLabelValues(sp.config.JobName)
+		sp.metrics.targetSyncFailed.DeleteLabelValues(sp.config.JobName)
 	}
 }
 
@@ -409,12 +242,12 @@ func (sp *scrapePool) stop() {
 func (sp *scrapePool) reload(cfg *config.ScrapeConfig) error {
 	sp.mtx.Lock()
 	defer sp.mtx.Unlock()
-	targetScrapePoolReloads.Inc()
+	sp.metrics.targetScrapePoolReloads.Inc()
 	start := time.Now()
 
 	client, err := config_util.NewClientFromConfig(cfg.HTTPClientConfig, cfg.JobName, sp.httpOpts...)
 	if err != nil {
-		targetScrapePoolReloadsFailed.Inc()
+		sp.metrics.targetScrapePoolReloadsFailed.Inc()
 		return errors.Wrap(err, "error creating HTTP client")
 	}
 
@@ -423,7 +256,7 @@ func (sp *scrapePool) reload(cfg *config.ScrapeConfig) error {
 	oldClient := sp.client
 	sp.client = client
 
-	targetScrapePoolTargetLimit.WithLabelValues(sp.config.JobName).Set(float64(sp.config.TargetLimit))
+	sp.metrics.targetScrapePoolTargetLimit.WithLabelValues(sp.config.JobName).Set(float64(sp.config.TargetLimit))
 
 	var (
 		wg            sync.WaitGroup
@@ -451,17 +284,19 @@ func (sp *scrapePool) reload(cfg *config.ScrapeConfig) error {
 			oldLoop.disableEndOfRunStalenessMarkers()
 			cache = oc
 		} else {
-			cache = newScrapeCache()
+			cache = newScrapeCache(sp.metrics)
 		}
 
 		t := sp.activeTargets[fp]
 		interval, timeout, err := t.intervalAndTimeout(interval, timeout)
-		acceptHeader := scrapeAcceptHeader
-		if sp.enableProtobufNegotiation {
-			acceptHeader = scrapeAcceptHeaderWithProtobuf
-		}
 		var (
-			s       = &targetScraper{Target: t, client: sp.client, timeout: timeout, bodySizeLimit: bodySizeLimit, acceptHeader: acceptHeader}
+			s = &targetScraper{
+				Target:        t,
+				client:        sp.client,
+				timeout:       timeout,
+				bodySizeLimit: bodySizeLimit,
+				acceptHeader:  acceptHeader(cfg.ScrapeProtocols),
+			}
 			newLoop = sp.newLoop(scrapeLoopOptions{
 				target:          t,
 				scraper:         s,
@@ -496,7 +331,7 @@ func (sp *scrapePool) reload(cfg *config.ScrapeConfig) error {
 
 	wg.Wait()
 	oldClient.CloseIdleConnections()
-	targetReloadIntervalLength.WithLabelValues(interval.String()).Observe(
+	sp.metrics.targetReloadIntervalLength.WithLabelValues(interval.String()).Observe(
 		time.Since(start).Seconds(),
 	)
 	return nil
@@ -520,7 +355,7 @@ func (sp *scrapePool) Sync(tgs []*targetgroup.Group) {
 		for _, err := range failures {
 			level.Error(sp.logger).Log("msg", "Creating target failed", "err", err)
 		}
-		targetSyncFailed.WithLabelValues(sp.config.JobName).Add(float64(len(failures)))
+		sp.metrics.targetSyncFailed.WithLabelValues(sp.config.JobName).Add(float64(len(failures)))
 		for _, t := range targets {
 			// Replicate .Labels().IsEmpty() with a loop here to avoid generating garbage.
 			nonEmpty := false
@@ -539,10 +374,10 @@ func (sp *scrapePool) Sync(tgs []*targetgroup.Group) {
 	sp.targetMtx.Unlock()
 	sp.sync(all)
 
-	targetSyncIntervalLength.WithLabelValues(sp.config.JobName).Observe(
+	sp.metrics.targetSyncIntervalLength.WithLabelValues(sp.config.JobName).Observe(
 		time.Since(start).Seconds(),
 	)
-	targetScrapePoolSyncsCounter.WithLabelValues(sp.config.JobName).Inc()
+	sp.metrics.targetScrapePoolSyncsCounter.WithLabelValues(sp.config.JobName).Inc()
 }
 
 // sync takes a list of potentially duplicated targets, deduplicates them, starts
@@ -577,11 +412,14 @@ func (sp *scrapePool) sync(targets []*Target) {
 			// for every target.
 			var err error
 			interval, timeout, err = t.intervalAndTimeout(interval, timeout)
-			acceptHeader := scrapeAcceptHeader
+			s := &targetScraper{
-			if sp.enableProtobufNegotiation {
+				Target:        t,
-				acceptHeader = scrapeAcceptHeaderWithProtobuf
+				client:        sp.client,
+				timeout:       timeout,
+				bodySizeLimit: bodySizeLimit,
+				acceptHeader:  acceptHeader(sp.config.ScrapeProtocols),
+				metrics:       sp.metrics,
 			}
-			s := &targetScraper{Target: t, client: sp.client, timeout: timeout, bodySizeLimit: bodySizeLimit, acceptHeader: acceptHeader}
 			l := sp.newLoop(scrapeLoopOptions{
 				target:                  t,
 				scraper:                 s,
@@ -632,7 +470,7 @@ func (sp *scrapePool) sync(targets []*Target) {
 
 	sp.targetMtx.Unlock()
 
-	targetScrapePoolTargetsAdded.WithLabelValues(sp.config.JobName).Set(float64(len(uniqueLoops)))
+	sp.metrics.targetScrapePoolTargetsAdded.WithLabelValues(sp.config.JobName).Set(float64(len(uniqueLoops)))
 	forcedErr := sp.refreshTargetLimitErr()
 	for _, l := range sp.loops {
 		l.setForcedError(forcedErr)
@@ -656,7 +494,7 @@ func (sp *scrapePool) refreshTargetLimitErr() error {
 		return nil
 	}
 	if l := len(sp.activeTargets); l > int(sp.config.TargetLimit) {
-		targetScrapePoolExceededTargetLimit.Inc()
+		sp.metrics.targetScrapePoolExceededTargetLimit.Inc()
 		return fmt.Errorf("target_limit exceeded (number of targets: %d, limit: %d)", l, sp.config.TargetLimit)
 	}
 	return nil
@@ -785,7 +623,8 @@ func appender(app storage.Appender, sampleLimit, bucketLimit int) storage.Append
 
 // A scraper retrieves samples and accepts a status report at the end.
 type scraper interface {
-	scrape(ctx context.Context, w io.Writer) (string, error)
+	scrape(ctx context.Context) (*http.Response, error)
+	readResponse(ctx context.Context, resp *http.Response, w io.Writer) (string, error)
 	Report(start time.Time, dur time.Duration, err error)
 	offset(interval time.Duration, offsetSeed uint64) time.Duration
 }
@@ -803,22 +642,34 @@ type targetScraper struct {
 
 	bodySizeLimit int64
 	acceptHeader  string
+
+	metrics *scrapeMetrics
 }
 
 var errBodySizeLimit = errors.New("body size limit exceeded")
 
-const (
+// acceptHeader transforms preference from the options into specific header values as
-	scrapeAcceptHeader             = `application/openmetrics-text;version=1.0.0,application/openmetrics-text;version=0.0.1;q=0.75,text/plain;version=0.0.4;q=0.5,*/*;q=0.1`
+// https://www.rfc-editor.org/rfc/rfc9110.html#name-accept defines.
-	scrapeAcceptHeaderWithProtobuf = `application/vnd.google.protobuf;proto=io.prometheus.client.MetricFamily;encoding=delimited,application/openmetrics-text;version=1.0.0;q=0.8,application/openmetrics-text;version=0.0.1;q=0.75,text/plain;version=0.0.4;q=0.5,*/*;q=0.1`
+// No validation is here, we expect scrape protocols to be validated already.
-)
+func acceptHeader(sps []config.ScrapeProtocol) string {
+	var vals []string
+	weight := len(config.ScrapeProtocolsHeaders) + 1
+	for _, sp := range sps {
+		vals = append(vals, fmt.Sprintf("%s;q=0.%d", config.ScrapeProtocolsHeaders[sp], weight))
+		weight--
+	}
+	// Default match anything.
+	vals = append(vals, fmt.Sprintf("*/*;q=%d", weight))
+	return strings.Join(vals, ",")
+}
 
 var UserAgent = fmt.Sprintf("Prometheus/%s", version.Version)
 
-func (s *targetScraper) scrape(ctx context.Context, w io.Writer) (string, error) {
+func (s *targetScraper) scrape(ctx context.Context) (*http.Response, error) {
 	if s.req == nil {
 		req, err := http.NewRequest("GET", s.URL().String(), nil)
 		if err != nil {
-			return "", err
+			return nil, err
 		}
 		req.Header.Add("Accept", s.acceptHeader)
 		req.Header.Add("Accept-Encoding", "gzip")
@@ -828,10 +679,10 @@ func (s *targetScraper) scrape(ctx context.Context, w io.Writer) (string, error)
 		s.req = req
 	}
 
-	resp, err := s.client.Do(s.req.WithContext(ctx))
+	return s.client.Do(s.req.WithContext(ctx))
-	if err != nil {
+}
-		return "", err
+
-	}
+func (s *targetScraper) readResponse(ctx context.Context, resp *http.Response, w io.Writer) (string, error) {
 	defer func() {
 		io.Copy(io.Discard, resp.Body)
 		resp.Body.Close()
@@ -850,7 +701,7 @@ func (s *targetScraper) scrape(ctx context.Context, w io.Writer) (string, error)
 			return "", err
 		}
 		if n >= s.bodySizeLimit {
-			targetScrapeExceededBodySizeLimit.Inc()
+			s.metrics.targetScrapeExceededBodySizeLimit.Inc()
 			return "", errBodySizeLimit
 		}
 		return resp.Header.Get("Content-Type"), nil
@@ -858,13 +709,14 @@ func (s *targetScraper) scrape(ctx context.Context, w io.Writer) (string, error)
 
 	if s.gzipr == nil {
 		s.buf = bufio.NewReader(resp.Body)
+		var err error
 		s.gzipr, err = gzip.NewReader(s.buf)
 		if err != nil {
 			return "", err
 		}
 	} else {
 		s.buf.Reset(resp.Body)
-		if err = s.gzipr.Reset(s.buf); err != nil {
+		if err := s.gzipr.Reset(s.buf); err != nil {
 			return "", err
 		}
 	}
@@ -875,7 +727,7 @@ func (s *targetScraper) scrape(ctx context.Context, w io.Writer) (string, error)
 		return "", err
 	}
 	if n >= s.bodySizeLimit {
-		targetScrapeExceededBodySizeLimit.Inc()
+		s.metrics.targetScrapeExceededBodySizeLimit.Inc()
 		return "", errBodySizeLimit
 	}
 	return resp.Header.Get("Content-Type"), nil
@@ -928,6 +780,8 @@ type scrapeLoop struct {
 
 	reportExtraMetrics  bool
 	appendMetadataToWAL bool
+
+	metrics *scrapeMetrics
 }
 
 // scrapeCache tracks mappings of exposed metric strings to label sets and
@@ -955,6 +809,8 @@ type scrapeCache struct {
 
 	metaMtx  sync.Mutex
 	metadata map[string]*metaEntry
+
+	metrics *scrapeMetrics
 }
 
 // metaEntry holds meta information about a metric.
@@ -970,13 +826,14 @@ func (m *metaEntry) size() int {
 	return len(m.Help) + len(m.Unit) + len(m.Type)
 }
 
-func newScrapeCache() *scrapeCache {
+func newScrapeCache(metrics *scrapeMetrics) *scrapeCache {
 	return &scrapeCache{
 		series:        map[string]*cacheEntry{},
 		droppedSeries: map[string]*uint64{},
 		seriesCur:     map[uint64]labels.Labels{},
 		seriesPrev:    map[uint64]labels.Labels{},
 		metadata:      map[string]*metaEntry{},
+		metrics:       metrics,
 	}
 }
 
@@ -995,7 +852,7 @@ func (c *scrapeCache) iterDone(flushCache bool) {
 		// since the last scrape, and allow an additional 1000 in case
 		// initial scrapes all fail.
 		flushCache = true
-		targetScrapeCacheFlushForced.Inc()
+		c.metrics.targetScrapeCacheFlushForced.Inc()
 	}
 
 	if flushCache {
@@ -1199,6 +1056,7 @@ func newScrapeLoop(ctx context.Context,
 	appendMetadataToWAL bool,
 	target *Target,
 	passMetadataInContext bool,
+	metrics *scrapeMetrics,
 ) *scrapeLoop {
 	if l == nil {
 		l = log.NewNopLogger()
@@ -1207,7 +1065,7 @@ func newScrapeLoop(ctx context.Context,
 		buffers = pool.New(1e3, 1e6, 3, func(sz int) interface{} { return make([]byte, 0, sz) })
 	}
 	if cache == nil {
-		cache = newScrapeCache()
+		cache = newScrapeCache(metrics)
 	}
 
 	appenderCtx := ctx
@@ -1242,6 +1100,7 @@ func newScrapeLoop(ctx context.Context,
 		scrapeClassicHistograms: scrapeClassicHistograms,
 		reportExtraMetrics:      reportExtraMetrics,
 		appendMetadataToWAL:     appendMetadataToWAL,
+		metrics:                 metrics,
 	}
 	sl.ctx, sl.cancel = context.WithCancel(ctx)
 
@@ -1321,16 +1180,12 @@ func (sl *scrapeLoop) scrapeAndReport(last, appendTime time.Time, errc chan<- er
 
 	// Only record after the first scrape.
 	if !last.IsZero() {
-		targetIntervalLength.WithLabelValues(sl.interval.String()).Observe(
+		sl.metrics.targetIntervalLength.WithLabelValues(sl.interval.String()).Observe(
 			time.Since(last).Seconds(),
 		)
 	}
 
-	b := sl.buffers.Get(sl.lastScrapeSize).([]byte)
+	var total, added, seriesAdded, bytesRead int
-	defer sl.buffers.Put(b)
-	buf := bytes.NewBuffer(b)
-
-	var total, added, seriesAdded, bytes int
 	var err, appErr, scrapeErr error
 
 	app := sl.appender(sl.appenderCtx)
@@ -1346,7 +1201,7 @@ func (sl *scrapeLoop) scrapeAndReport(last, appendTime time.Time, errc chan<- er
 	}()
 
 	defer func() {
-		if err = sl.report(app, appendTime, time.Since(start), total, added, seriesAdded, bytes, scrapeErr); err != nil {
+		if err = sl.report(app, appendTime, time.Since(start), total, added, seriesAdded, bytesRead, scrapeErr); err != nil {
 			level.Warn(sl.l).Log("msg", "Appending scrape report failed", "err", err)
 		}
 	}()
@@ -1367,8 +1222,17 @@ func (sl *scrapeLoop) scrapeAndReport(last, appendTime time.Time, errc chan<- er
 	}
 
 	var contentType string
+	var resp *http.Response
+	var b []byte
+	var buf *bytes.Buffer
 	scrapeCtx, cancel := context.WithTimeout(sl.parentCtx, sl.timeout)
-	contentType, scrapeErr = sl.scraper.scrape(scrapeCtx, buf)
+	resp, scrapeErr = sl.scraper.scrape(scrapeCtx)
+	if scrapeErr == nil {
+		b = sl.buffers.Get(sl.lastScrapeSize).([]byte)
+		defer sl.buffers.Put(b)
+		buf = bytes.NewBuffer(b)
+		contentType, scrapeErr = sl.scraper.readResponse(scrapeCtx, resp, buf)
+	}
 	cancel()
 
 	if scrapeErr == nil {
@@ -1379,14 +1243,14 @@ func (sl *scrapeLoop) scrapeAndReport(last, appendTime time.Time, errc chan<- er
 		if len(b) > 0 {
 			sl.lastScrapeSize = len(b)
 		}
-		bytes = len(b)
+		bytesRead = len(b)
 	} else {
 		level.Debug(sl.l).Log("msg", "Scrape failed", "err", scrapeErr)
 		if errc != nil {
 			errc <- scrapeErr
 		}
 		if errors.Is(scrapeErr, errBodySizeLimit) {
-			bytes = -1
+			bytesRead = -1
 		}
 	}
 
@@ -1525,6 +1389,7 @@ func (sl *scrapeLoop) append(app storage.Appender, b []byte, contentType string,
 		appErrs         = appendErrors{}
 		sampleLimitErr  error
 		bucketLimitErr  error
+		lset            labels.Labels     // escapes to heap so hoisted out of loop
 		e               exemplar.Exemplar // escapes to heap so hoisted out of loop
 		meta            metadata.Metadata
 		metadataChanged bool
@@ -1622,7 +1487,6 @@ loop:
 		ce, ok := sl.cache.get(met)
 		var (
 			ref  storage.SeriesRef
-			lset labels.Labels
 			hash uint64
 		)
 
@@ -1657,7 +1521,7 @@ loop:
 
 			// If any label limits is exceeded the scrape should fail.
 			if err = verifyLabelLimits(lset, sl.labelLimits); err != nil {
-				targetScrapePoolExceededLabelLimits.Inc()
+				sl.metrics.targetScrapePoolExceededLabelLimits.Inc()
 				break loop
 			}
 
@@ -1722,14 +1586,14 @@ loop:
 			err = sampleLimitErr
 		}
 		// We only want to increment this once per scrape, so this is Inc'd outside the loop.
-		targetScrapeSampleLimit.Inc()
+		sl.metrics.targetScrapeSampleLimit.Inc()
 	}
 	if bucketLimitErr != nil {
 		if err == nil {
 			err = bucketLimitErr // If sample limit is hit, that error takes precedence.
 		}
 		// We only want to increment this once per scrape, so this is Inc'd outside the loop.
-		targetScrapeNativeHistogramBucketLimit.Inc()
+		sl.metrics.targetScrapeNativeHistogramBucketLimit.Inc()
 	}
 	if appErrs.numOutOfOrder > 0 {
 		level.Warn(sl.l).Log("msg", "Error on ingesting out-of-order samples", "num_dropped", appErrs.numOutOfOrder)
@@ -1773,17 +1637,17 @@ func (sl *scrapeLoop) checkAddError(ce *cacheEntry, met []byte, tp *int64, err e
 	case storage.ErrOutOfOrderSample:
 		appErrs.numOutOfOrder++
 		level.Debug(sl.l).Log("msg", "Out of order sample", "series", string(met))
-		targetScrapeSampleOutOfOrder.Inc()
+		sl.metrics.targetScrapeSampleOutOfOrder.Inc()
 		return false, nil
 	case storage.ErrDuplicateSampleForTimestamp:
 		appErrs.numDuplicates++
 		level.Debug(sl.l).Log("msg", "Duplicate sample for timestamp", "series", string(met))
-		targetScrapeSampleDuplicate.Inc()
+		sl.metrics.targetScrapeSampleDuplicate.Inc()
 		return false, nil
 	case storage.ErrOutOfBounds:
 		appErrs.numOutOfBounds++
 		level.Debug(sl.l).Log("msg", "Out of bounds metric", "series", string(met))
-		targetScrapeSampleOutOfBounds.Inc()
+		sl.metrics.targetScrapeSampleOutOfBounds.Inc()
 		return false, nil
 	case errSampleLimit:
 		// Keep on parsing output if we hit the limit, so we report the correct
@@ -1807,7 +1671,7 @@ func (sl *scrapeLoop) checkAddExemplarError(err error, e exemplar.Exemplar, appE
 	case storage.ErrOutOfOrderExemplar:
 		appErrs.numExemplarOutOfOrder++
 		level.Debug(sl.l).Log("msg", "Out of order exemplar", "exemplar", fmt.Sprintf("%+v", e))
-		targetScrapeExemplarOutOfOrder.Inc()
+		sl.metrics.targetScrapeExemplarOutOfOrder.Inc()
 		return nil
 	default:
 		return err

scrape/scrape_test.go

@@ -57,11 +57,18 @@ func TestMain(m *testing.M) {
 	testutil.TolerantVerifyLeak(m)
 }
 
+func newTestScrapeMetrics(t testing.TB) *scrapeMetrics {
+	reg := prometheus.NewRegistry()
+	metrics, err := newScrapeMetrics(reg)
+	require.NoError(t, err)
+	return metrics
+}
+
 func TestNewScrapePool(t *testing.T) {
 	var (
 		app   = &nopAppendable{}
 		cfg   = &config.ScrapeConfig{}
-		sp, _ = newScrapePool(cfg, app, 0, nil, &Options{})
+		sp, _ = newScrapePool(cfg, app, 0, nil, &Options{}, newTestScrapeMetrics(t))
 	)
 
 	if a, ok := sp.appendable.(*nopAppendable); !ok || a != app {
@@ -97,7 +104,7 @@ func TestDroppedTargetsList(t *testing.T) {
 				},
 			},
 		}
-		sp, _                  = newScrapePool(cfg, app, 0, nil, &Options{})
+		sp, _                  = newScrapePool(cfg, app, 0, nil, &Options{}, newTestScrapeMetrics(t))
 		expectedLabelSetString = "{__address__=\"127.0.0.1:9090\", __scrape_interval__=\"0s\", __scrape_timeout__=\"0s\", job=\"dropMe\"}"
 		expectedLength         = 2
 	)
@@ -117,7 +124,10 @@ func TestDroppedTargetsList(t *testing.T) {
 // TestDiscoveredLabelsUpdate checks that DiscoveredLabels are updated
 // even when new labels don't affect the target `hash`.
 func TestDiscoveredLabelsUpdate(t *testing.T) {
-	sp := &scrapePool{}
+	sp := &scrapePool{
+		metrics: newTestScrapeMetrics(t),
+	}
+
 	// These are used when syncing so need this to avoid a panic.
 	sp.config = &config.ScrapeConfig{
 		ScrapeInterval: model.Duration(1),
@@ -184,6 +194,7 @@ func TestScrapePoolStop(t *testing.T) {
 		loops:         map[uint64]loop{},
 		cancel:        func() {},
 		client:        http.DefaultClient,
+		metrics:       newTestScrapeMetrics(t),
 	}
 	var mtx sync.Mutex
 	stopped := map[uint64]bool{}
@@ -262,6 +273,7 @@ func TestScrapePoolReload(t *testing.T) {
 		}
 		return l
 	}
+
 	sp := &scrapePool{
 		appendable:    &nopAppendable{},
 		activeTargets: map[uint64]*Target{},
@@ -269,6 +281,7 @@ func TestScrapePoolReload(t *testing.T) {
 		newLoop:       newLoop,
 		logger:        nil,
 		client:        http.DefaultClient,
+		metrics:       newTestScrapeMetrics(t),
 	}
 
 	// Reloading a scrape pool with a new scrape configuration must stop all scrape
@@ -352,6 +365,7 @@ func TestScrapePoolReloadPreserveRelabeledIntervalTimeout(t *testing.T) {
 		newLoop: newLoop,
 		logger:  nil,
 		client:  http.DefaultClient,
+		metrics: newTestScrapeMetrics(t),
 	}
 
 	err := sp.reload(reloadCfg)
@@ -381,6 +395,7 @@ func TestScrapePoolTargetLimit(t *testing.T) {
 		newLoop:       newLoop,
 		logger:        log.NewNopLogger(),
 		client:        http.DefaultClient,
+		metrics:       newTestScrapeMetrics(t),
 	}
 
 	tgs := []*targetgroup.Group{}
@@ -489,7 +504,7 @@ func TestScrapePoolTargetLimit(t *testing.T) {
 func TestScrapePoolAppender(t *testing.T) {
 	cfg := &config.ScrapeConfig{}
 	app := &nopAppendable{}
-	sp, _ := newScrapePool(cfg, app, 0, nil, &Options{})
+	sp, _ := newScrapePool(cfg, app, 0, nil, &Options{}, newTestScrapeMetrics(t))
 
 	loop := sp.newLoop(scrapeLoopOptions{
 		target: &Target{},
@@ -545,7 +560,7 @@ func TestScrapePoolRaces(t *testing.T) {
 	newConfig := func() *config.ScrapeConfig {
 		return &config.ScrapeConfig{ScrapeInterval: interval, ScrapeTimeout: timeout}
 	}
-	sp, _ := newScrapePool(newConfig(), &nopAppendable{}, 0, nil, &Options{})
+	sp, _ := newScrapePool(newConfig(), &nopAppendable{}, 0, nil, &Options{}, newTestScrapeMetrics(t))
 	tgts := []*targetgroup.Group{
 		{
 			Targets: []model.LabelSet{
@@ -595,6 +610,7 @@ func TestScrapePoolScrapeLoopsStarted(t *testing.T) {
 		newLoop:       newLoop,
 		logger:        nil,
 		client:        http.DefaultClient,
+		metrics:       newTestScrapeMetrics(t),
 	}
 
 	tgs := []*targetgroup.Group{
@@ -643,6 +659,7 @@ func TestScrapeLoopStopBeforeRun(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	// The scrape pool synchronizes on stopping scrape loops. However, new scrape
@@ -716,6 +733,7 @@ func TestScrapeLoopStop(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	// Terminate loop after 2 scrapes.
@@ -793,6 +811,7 @@ func TestScrapeLoopRun(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	// The loop must terminate during the initial offset if the context
@@ -849,6 +868,7 @@ func TestScrapeLoopRun(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	go func() {
@@ -909,6 +929,7 @@ func TestScrapeLoopForcedErr(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	forcedErr := fmt.Errorf("forced err")
@@ -945,7 +966,7 @@ func TestScrapeLoopMetadata(t *testing.T) {
 	var (
 		signal  = make(chan struct{})
 		scraper = &testScraper{}
-		cache   = newScrapeCache()
+		cache   = newScrapeCache(newTestScrapeMetrics(t))
 	)
 	defer close(signal)
 
@@ -968,6 +989,7 @@ func TestScrapeLoopMetadata(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 	defer cancel()
 
@@ -1026,6 +1048,7 @@ func simpleTestScrapeLoop(t testing.TB) (context.Context, *scrapeLoop) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 	t.Cleanup(func() { cancel() })
 
@@ -1087,6 +1110,7 @@ func TestScrapeLoopFailWithInvalidLabelsAfterRelabel(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	slApp := sl.appender(ctx)
@@ -1166,6 +1190,7 @@ func TestScrapeLoopRunCreatesStaleMarkersOnFailedScrape(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 	// Succeed once, several failures, then stop.
 	numScrapes := 0
@@ -1230,6 +1255,7 @@ func TestScrapeLoopRunCreatesStaleMarkersOnParseFailure(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	// Succeed once, several failures, then stop.
@@ -1297,6 +1323,7 @@ func TestScrapeLoopCache(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	numScrapes := 0
@@ -1381,6 +1408,7 @@ func TestScrapeLoopCacheMemoryExhaustionProtection(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	numScrapes := 0
@@ -1496,6 +1524,7 @@ func TestScrapeLoopAppend(t *testing.T) {
 			false,
 			nil,
 			false,
+			newTestScrapeMetrics(t),
 		)
 
 		now := time.Now()
@@ -1583,7 +1612,8 @@ func TestScrapeLoopAppendForConflictingPrefixedLabels(t *testing.T) {
 					return mutateSampleLabels(l, &Target{labels: labels.FromStrings(tc.targetLabels...)}, false, nil)
 				},
 				nil,
-				func(ctx context.Context) storage.Appender { return app }, nil, 0, true, 0, 0, nil, 0, 0, false, false, false, nil, false,
+				func(ctx context.Context) storage.Appender { return app },
+				nil, 0, true, 0, 0, nil, 0, 0, false, false, false, nil, false, newTestScrapeMetrics(t),
 			)
 			slApp := sl.appender(context.Background())
 			_, _, _, err := sl.append(slApp, []byte(tc.exposedLabels), "", time.Date(2000, 1, 1, 1, 0, 0, 0, time.UTC))
@@ -1623,6 +1653,7 @@ func TestScrapeLoopAppendCacheEntryButErrNotFound(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	fakeRef := storage.SeriesRef(1)
@@ -1682,11 +1713,12 @@ func TestScrapeLoopAppendSampleLimit(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	// Get the value of the Counter before performing the append.
 	beforeMetric := dto.Metric{}
-	err := targetScrapeSampleLimit.Write(&beforeMetric)
+	err := sl.metrics.targetScrapeSampleLimit.Write(&beforeMetric)
 	require.NoError(t, err)
 
 	beforeMetricValue := beforeMetric.GetCounter().GetValue()
@@ -1705,7 +1737,7 @@ func TestScrapeLoopAppendSampleLimit(t *testing.T) {
 	// Check that the Counter has been incremented a single time for the scrape,
 	// not multiple times for each sample.
 	metric := dto.Metric{}
-	err = targetScrapeSampleLimit.Write(&metric)
+	err = sl.metrics.targetScrapeSampleLimit.Write(&metric)
 	require.NoError(t, err)
 
 	value := metric.GetCounter().GetValue()
@@ -1760,10 +1792,11 @@ func TestScrapeLoop_HistogramBucketLimit(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	metric := dto.Metric{}
-	err := targetScrapeNativeHistogramBucketLimit.Write(&metric)
+	err := sl.metrics.targetScrapeNativeHistogramBucketLimit.Write(&metric)
 	require.NoError(t, err)
 	beforeMetricValue := metric.GetCounter().GetValue()
 
@@ -1801,7 +1834,7 @@ func TestScrapeLoop_HistogramBucketLimit(t *testing.T) {
 	require.Equal(t, 3, added)
 	require.Equal(t, 3, seriesAdded)
 
-	err = targetScrapeNativeHistogramBucketLimit.Write(&metric)
+	err = sl.metrics.targetScrapeNativeHistogramBucketLimit.Write(&metric)
 	require.NoError(t, err)
 	metricValue := metric.GetCounter().GetValue()
 	require.Equal(t, beforeMetricValue, metricValue)
@@ -1827,7 +1860,7 @@ func TestScrapeLoop_HistogramBucketLimit(t *testing.T) {
 	require.Equal(t, 3, added)
 	require.Equal(t, 0, seriesAdded)
 
-	err = targetScrapeNativeHistogramBucketLimit.Write(&metric)
+	err = sl.metrics.targetScrapeNativeHistogramBucketLimit.Write(&metric)
 	require.NoError(t, err)
 	metricValue = metric.GetCounter().GetValue()
 	require.Equal(t, beforeMetricValue+1, metricValue)
@@ -1859,6 +1892,7 @@ func TestScrapeLoop_ChangingMetricString(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	now := time.Now()
@@ -1908,6 +1942,7 @@ func TestScrapeLoopAppendStaleness(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	now := time.Now()
@@ -1960,6 +1995,7 @@ func TestScrapeLoopAppendNoStalenessIfTimestamp(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	now := time.Now()
@@ -2286,6 +2322,7 @@ metric: <
 				false,
 				nil,
 				false,
+				newTestScrapeMetrics(t),
 			)
 
 			now := time.Now()
@@ -2374,6 +2411,7 @@ func TestScrapeLoopAppendExemplarSeries(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	now := time.Now()
@@ -2427,6 +2465,7 @@ func TestScrapeLoopRunReportsTargetDownOnScrapeError(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	scraper.scrapeFunc = func(ctx context.Context, w io.Writer) error {
@@ -2464,6 +2503,7 @@ func TestScrapeLoopRunReportsTargetDownOnInvalidUTF8(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	scraper.scrapeFunc = func(ctx context.Context, w io.Writer) error {
@@ -2514,6 +2554,7 @@ func TestScrapeLoopAppendGracefullyIfAmendOrOutOfOrderOrOutOfBounds(t *testing.T
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	now := time.Unix(1, 0)
@@ -2560,6 +2601,7 @@ func TestScrapeLoopOutOfBoundsTimeError(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	now := time.Now().Add(20 * time.Minute)
@@ -2619,15 +2661,17 @@ func TestTargetScraperScrapeOK(t *testing.T) {
 		}
 		var buf bytes.Buffer
 
-		contentType, err := ts.scrape(context.Background(), &buf)
+		resp, err := ts.scrape(context.Background())
+		require.NoError(t, err)
+		contentType, err := ts.readResponse(context.Background(), resp, &buf)
 		require.NoError(t, err)
 		require.Equal(t, "text/plain; version=0.0.4", contentType)
 		require.Equal(t, "metric_a 1\nmetric_b 2\n", buf.String())
 	}
 
-	runTest(scrapeAcceptHeader)
+	runTest(acceptHeader(config.DefaultScrapeProtocols))
 	protobufParsing = true
-	runTest(scrapeAcceptHeaderWithProtobuf)
+	runTest(acceptHeader(config.DefaultNativeHistogramScrapeProtocols))
 }
 
 func TestTargetScrapeScrapeCancel(t *testing.T) {
@@ -2653,7 +2697,7 @@ func TestTargetScrapeScrapeCancel(t *testing.T) {
 			),
 		},
 		client:       http.DefaultClient,
-		acceptHeader: scrapeAcceptHeader,
+		acceptHeader: acceptHeader(config.DefaultGlobalConfig.ScrapeProtocols),
 	}
 	ctx, cancel := context.WithCancel(context.Background())
 
@@ -2665,7 +2709,7 @@ func TestTargetScrapeScrapeCancel(t *testing.T) {
 	}()
 
 	go func() {
-		_, err := ts.scrape(ctx, io.Discard)
+		_, err := ts.scrape(ctx)
 		switch {
 		case err == nil:
 			errc <- errors.New("Expected error but got nil")
@@ -2708,10 +2752,12 @@ func TestTargetScrapeScrapeNotFound(t *testing.T) {
 			),
 		},
 		client:       http.DefaultClient,
-		acceptHeader: scrapeAcceptHeader,
+		acceptHeader: acceptHeader(config.DefaultGlobalConfig.ScrapeProtocols),
 	}
 
-	_, err = ts.scrape(context.Background(), io.Discard)
+	resp, err := ts.scrape(context.Background())
+	require.NoError(t, err)
+	_, err = ts.readResponse(context.Background(), resp, io.Discard)
 	require.Contains(t, err.Error(), "404", "Expected \"404 NotFound\" error but got: %s", err)
 }
 
@@ -2750,31 +2796,40 @@ func TestTargetScraperBodySizeLimit(t *testing.T) {
 		},
 		client:        http.DefaultClient,
 		bodySizeLimit: bodySizeLimit,
-		acceptHeader:  scrapeAcceptHeader,
+		acceptHeader:  acceptHeader(config.DefaultGlobalConfig.ScrapeProtocols),
+		metrics:       newTestScrapeMetrics(t),
 	}
 	var buf bytes.Buffer
 
 	// Target response uncompressed body, scrape with body size limit.
-	_, err = ts.scrape(context.Background(), &buf)
+	resp, err := ts.scrape(context.Background())
+	require.NoError(t, err)
+	_, err = ts.readResponse(context.Background(), resp, &buf)
 	require.ErrorIs(t, err, errBodySizeLimit)
 	require.Equal(t, bodySizeLimit, buf.Len())
 	// Target response gzip compressed body, scrape with body size limit.
 	gzipResponse = true
 	buf.Reset()
-	_, err = ts.scrape(context.Background(), &buf)
+	resp, err = ts.scrape(context.Background())
+	require.NoError(t, err)
+	_, err = ts.readResponse(context.Background(), resp, &buf)
 	require.ErrorIs(t, err, errBodySizeLimit)
 	require.Equal(t, bodySizeLimit, buf.Len())
 	// Target response uncompressed body, scrape without body size limit.
 	gzipResponse = false
 	buf.Reset()
 	ts.bodySizeLimit = 0
-	_, err = ts.scrape(context.Background(), &buf)
+	resp, err = ts.scrape(context.Background())
+	require.NoError(t, err)
+	_, err = ts.readResponse(context.Background(), resp, &buf)
 	require.NoError(t, err)
 	require.Equal(t, len(responseBody), buf.Len())
 	// Target response gzip compressed body, scrape without body size limit.
 	gzipResponse = true
 	buf.Reset()
-	_, err = ts.scrape(context.Background(), &buf)
+	resp, err = ts.scrape(context.Background())
+	require.NoError(t, err)
+	_, err = ts.readResponse(context.Background(), resp, &buf)
 	require.NoError(t, err)
 	require.Equal(t, len(responseBody), buf.Len())
 }
@@ -2802,7 +2857,11 @@ func (ts *testScraper) Report(start time.Time, duration time.Duration, err error
 	ts.lastError = err
 }
 
-func (ts *testScraper) scrape(ctx context.Context, w io.Writer) (string, error) {
+func (ts *testScraper) scrape(ctx context.Context) (*http.Response, error) {
+	return nil, ts.scrapeErr
+}
+
+func (ts *testScraper) readResponse(ctx context.Context, resp *http.Response, w io.Writer) (string, error) {
 	if ts.scrapeFunc != nil {
 		return "", ts.scrapeFunc(ctx, w)
 	}
@@ -2833,6 +2892,7 @@ func TestScrapeLoop_RespectTimestamps(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	now := time.Now()
@@ -2875,6 +2935,7 @@ func TestScrapeLoop_DiscardTimestamps(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	now := time.Now()
@@ -2916,6 +2977,7 @@ func TestScrapeLoopDiscardDuplicateLabels(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 	defer cancel()
 
@@ -2975,6 +3037,7 @@ func TestScrapeLoopDiscardUnnamedMetrics(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 	defer cancel()
 
@@ -3067,7 +3130,7 @@ func TestReuseScrapeCache(t *testing.T) {
 			ScrapeInterval: model.Duration(5 * time.Second),
 			MetricsPath:    "/metrics",
 		}
-		sp, _ = newScrapePool(cfg, app, 0, nil, &Options{})
+		sp, _ = newScrapePool(cfg, app, 0, nil, &Options{}, newTestScrapeMetrics(t))
 		t1    = &Target{
 			discoveredLabels: labels.FromStrings("labelNew", "nameNew", "labelNew1", "nameNew1", "labelNew2", "nameNew2"),
 		}
@@ -3239,6 +3302,7 @@ func TestScrapeAddFast(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 	defer cancel()
 
@@ -3259,7 +3323,7 @@ func TestScrapeAddFast(t *testing.T) {
 	require.NoError(t, slApp.Commit())
 }
 
-func TestReuseCacheRace(*testing.T) {
+func TestReuseCacheRace(t *testing.T) {
 	var (
 		app = &nopAppendable{}
 		cfg = &config.ScrapeConfig{
@@ -3268,7 +3332,7 @@ func TestReuseCacheRace(*testing.T) {
 			ScrapeInterval: model.Duration(5 * time.Second),
 			MetricsPath:    "/metrics",
 		}
-		sp, _ = newScrapePool(cfg, app, 0, nil, &Options{})
+		sp, _ = newScrapePool(cfg, app, 0, nil, &Options{}, newTestScrapeMetrics(t))
 		t1    = &Target{
 			discoveredLabels: labels.FromStrings("labelNew", "nameNew"),
 		}
@@ -3293,7 +3357,7 @@ func TestReuseCacheRace(*testing.T) {
 
 func TestCheckAddError(t *testing.T) {
 	var appErrs appendErrors
-	sl := scrapeLoop{l: log.NewNopLogger()}
+	sl := scrapeLoop{l: log.NewNopLogger(), metrics: newTestScrapeMetrics(t)}
 	sl.checkAddError(nil, nil, nil, storage.ErrOutOfOrderSample, nil, nil, &appErrs)
 	require.Equal(t, 1, appErrs.numOutOfOrder)
 }
@@ -3326,6 +3390,7 @@ func TestScrapeReportSingleAppender(t *testing.T) {
 		false,
 		nil,
 		false,
+		newTestScrapeMetrics(t),
 	)
 
 	numScrapes := 0
@@ -3396,7 +3461,7 @@ func TestScrapeReportLimit(t *testing.T) {
 	}))
 	defer ts.Close()
 
-	sp, err := newScrapePool(cfg, s, 0, nil, &Options{})
+	sp, err := newScrapePool(cfg, s, 0, nil, &Options{}, newTestScrapeMetrics(t))
 	require.NoError(t, err)
 	defer sp.stop()
 
@@ -3529,6 +3594,7 @@ func TestScrapeLoopLabelLimit(t *testing.T) {
 			false,
 			nil,
 			false,
+			newTestScrapeMetrics(t),
 		)
 
 		slApp := sl.appender(context.Background())
@@ -3567,7 +3633,7 @@ func TestTargetScrapeIntervalAndTimeoutRelabel(t *testing.T) {
 			},
 		},
 	}
-	sp, _ := newScrapePool(config, &nopAppendable{}, 0, nil, &Options{})
+	sp, _ := newScrapePool(config, &nopAppendable{}, 0, nil, &Options{}, newTestScrapeMetrics(t))
 	tgts := []*targetgroup.Group{
 		{
 			Targets: []model.LabelSet{{model.AddressLabel: "127.0.0.1:9090"}},

scripts/sync_repo_files.sh

@@ -37,7 +37,7 @@ if [ -z "${GITHUB_TOKEN}" ]; then
 fi
 
 # List of files that should be synced.
-SYNC_FILES="CODE_OF_CONDUCT.md LICENSE Makefile.common SECURITY.md .yamllint scripts/golangci-lint.yml"
+SYNC_FILES="CODE_OF_CONDUCT.md LICENSE Makefile.common SECURITY.md .yamllint scripts/golangci-lint.yml .github/workflows/scorecards.yml"
 
 # Go to the root of the repo
 cd "$(git rev-parse --show-cdup)" || exit 1

storage/merge.go

@@ -347,7 +347,7 @@ func (c *genericMergeSeriesSet) Next() bool {
 		}
 
 		// Now, pop items of the heap that have equal label sets.
-		c.currentSets = nil
+		c.currentSets = c.currentSets[:0]
 		c.currentLabels = c.heap[0].At().Labels()
 		for len(c.heap) > 0 && labels.Equal(c.currentLabels, c.heap[0].At().Labels()) {
 			set := heap.Pop(&c.heap).(genericSeriesSet)

storage/remote/queue_manager.go

@@ -29,7 +29,7 @@ import (
 	"github.com/prometheus/common/model"
 	"go.opentelemetry.io/otel"
 	"go.opentelemetry.io/otel/attribute"
-	semconv "go.opentelemetry.io/otel/semconv/v1.17.0"
+	semconv "go.opentelemetry.io/otel/semconv/v1.21.0"
 	"go.uber.org/atomic"
 
 	"github.com/prometheus/prometheus/config"

tracing/tracing.go

@@ -30,7 +30,7 @@ import (
 	"go.opentelemetry.io/otel/propagation"
 	"go.opentelemetry.io/otel/sdk/resource"
 	tracesdk "go.opentelemetry.io/otel/sdk/trace"
-	semconv "go.opentelemetry.io/otel/semconv/v1.17.0"
+	semconv "go.opentelemetry.io/otel/semconv/v1.21.0"
 	"go.opentelemetry.io/otel/trace"
 	"google.golang.org/grpc/credentials"
 

tsdb/agent/db.go

@@ -802,11 +802,6 @@ func (a *appender) Append(ref storage.SeriesRef, l labels.Labels, t int64, v flo
 	series.Lock()
 	defer series.Unlock()
 
-	if t < series.lastTs {
-		a.metrics.totalOutOfOrderSamples.Inc()
-		return 0, storage.ErrOutOfOrderSample
-	}
-
 	// NOTE: always modify pendingSamples and sampleSeries together.
 	a.pendingSamples = append(a.pendingSamples, record.RefSample{
 		Ref: series.ref,
@@ -930,11 +925,6 @@ func (a *appender) AppendHistogram(ref storage.SeriesRef, l labels.Labels, t int
 	series.Lock()
 	defer series.Unlock()
 
-	if t < series.lastTs {
-		a.metrics.totalOutOfOrderSamples.Inc()
-		return 0, storage.ErrOutOfOrderSample
-	}
-
 	switch {
 	case h != nil:
 		// NOTE: always modify pendingHistograms and histogramSeries together

tsdb/agent/db_test.go

@@ -751,3 +751,130 @@ func TestStorage_DuplicateExemplarsIgnored(t *testing.T) {
 	// We had 9 calls to AppendExemplar but only 4 of those should have gotten through.
 	require.Equal(t, 4, walExemplarsCount)
 }
+
+func TestDBAllowOOOSamples(t *testing.T) {
+	const (
+		numDatapoints = 5
+		numHistograms = 5
+		numSeries     = 4
+		offset        = 100
+	)
+
+	reg := prometheus.NewRegistry()
+	s := createTestAgentDB(t, reg, DefaultOptions())
+	app := s.Appender(context.TODO())
+
+	// Let's add some samples in the [offset, offset+numDatapoints) range.
+	lbls := labelsForTest(t.Name(), numSeries)
+	for _, l := range lbls {
+		lset := labels.New(l...)
+
+		for i := offset; i < numDatapoints+offset; i++ {
+			ref, err := app.Append(0, lset, int64(i), float64(i))
+			require.NoError(t, err)
+
+			e := exemplar.Exemplar{
+				Labels: lset,
+				Ts:     int64(i) * 2,
+				Value:  float64(i),
+				HasTs:  true,
+			}
+			_, err = app.AppendExemplar(ref, lset, e)
+			require.NoError(t, err)
+		}
+	}
+
+	lbls = labelsForTest(t.Name()+"_histogram", numSeries)
+	for _, l := range lbls {
+		lset := labels.New(l...)
+
+		histograms := tsdbutil.GenerateTestHistograms(numHistograms)
+
+		for i := offset; i < numDatapoints+offset; i++ {
+			_, err := app.AppendHistogram(0, lset, int64(i), histograms[i-offset], nil)
+			require.NoError(t, err)
+		}
+	}
+
+	lbls = labelsForTest(t.Name()+"_float_histogram", numSeries)
+	for _, l := range lbls {
+		lset := labels.New(l...)
+
+		floatHistograms := tsdbutil.GenerateTestFloatHistograms(numHistograms)
+
+		for i := offset; i < numDatapoints+offset; i++ {
+			_, err := app.AppendHistogram(0, lset, int64(i), nil, floatHistograms[i-offset])
+			require.NoError(t, err)
+		}
+	}
+
+	require.NoError(t, app.Commit())
+	m := gatherFamily(t, reg, "prometheus_agent_samples_appended_total")
+	require.Equal(t, float64(20), m.Metric[0].Counter.GetValue(), "agent wal mismatch of total appended samples")
+	require.Equal(t, float64(40), m.Metric[1].Counter.GetValue(), "agent wal mismatch of total appended histograms")
+	require.NoError(t, s.Close())
+
+	// Hack: s.wal.Dir() is the /wal subdirectory of the original storage path.
+	// We need the original directory so we can recreate the storage for replay.
+	storageDir := filepath.Dir(s.wal.Dir())
+
+	// Replay the storage so that the lastTs for each series is recorded.
+	reg2 := prometheus.NewRegistry()
+	db, err := Open(s.logger, reg2, nil, storageDir, s.opts)
+	if err != nil {
+		t.Fatalf("unable to create storage for the agent: %v", err)
+	}
+
+	app = db.Appender(context.Background())
+
+	// Now the lastTs will have been recorded successfully.
+	// Let's try appending twice as many OOO samples in the [0, numDatapoints) range.
+	lbls = labelsForTest(t.Name()+"_histogram", numSeries*2)
+	for _, l := range lbls {
+		lset := labels.New(l...)
+
+		for i := 0; i < numDatapoints; i++ {
+			ref, err := app.Append(0, lset, int64(i), float64(i))
+			require.NoError(t, err)
+
+			e := exemplar.Exemplar{
+				Labels: lset,
+				Ts:     int64(i) * 2,
+				Value:  float64(i),
+				HasTs:  true,
+			}
+			_, err = app.AppendExemplar(ref, lset, e)
+			require.NoError(t, err)
+		}
+	}
+
+	lbls = labelsForTest(t.Name()+"_histogram", numSeries*2)
+	for _, l := range lbls {
+		lset := labels.New(l...)
+
+		histograms := tsdbutil.GenerateTestHistograms(numHistograms)
+
+		for i := 0; i < numDatapoints; i++ {
+			_, err := app.AppendHistogram(0, lset, int64(i), histograms[i], nil)
+			require.NoError(t, err)
+		}
+	}
+
+	lbls = labelsForTest(t.Name()+"_float_histogram", numSeries*2)
+	for _, l := range lbls {
+		lset := labels.New(l...)
+
+		floatHistograms := tsdbutil.GenerateTestFloatHistograms(numHistograms)
+
+		for i := 0; i < numDatapoints; i++ {
+			_, err := app.AppendHistogram(0, lset, int64(i), nil, floatHistograms[i])
+			require.NoError(t, err)
+		}
+	}
+
+	require.NoError(t, app.Commit())
+	m = gatherFamily(t, reg2, "prometheus_agent_samples_appended_total")
+	require.Equal(t, float64(40), m.Metric[0].Counter.GetValue(), "agent wal mismatch of total appended samples")
+	require.Equal(t, float64(80), m.Metric[1].Counter.GetValue(), "agent wal mismatch of total appended histograms")
+	require.NoError(t, db.Close())
+}

tsdb/compact.go

@@ -201,7 +201,14 @@ func (c *LeveledCompactor) Plan(dir string) ([]string, error) {
 
 func (c *LeveledCompactor) plan(dms []dirMeta) ([]string, error) {
 	slices.SortFunc(dms, func(a, b dirMeta) int {
-		return int(a.meta.MinTime - b.meta.MinTime)
+		switch {
+		case a.meta.MinTime < b.meta.MinTime:
+			return -1
+		case a.meta.MinTime > b.meta.MinTime:
+			return 1
+		default:
+			return 0
+		}
 	})
 
 	res := c.selectOverlappingDirs(dms)

tsdb/db.go

@@ -248,6 +248,7 @@ type dbMetrics struct {
 	tombCleanTimer       prometheus.Histogram
 	blocksBytes          prometheus.Gauge
 	maxBytes             prometheus.Gauge
+	retentionDuration    prometheus.Gauge
 }
 
 func newDBMetrics(db *DB, r prometheus.Registerer) *dbMetrics {
@@ -321,6 +322,10 @@ func newDBMetrics(db *DB, r prometheus.Registerer) *dbMetrics {
 		Name: "prometheus_tsdb_retention_limit_bytes",
 		Help: "Max number of bytes to be retained in the tsdb blocks, configured 0 means disabled",
 	})
+	m.retentionDuration = prometheus.NewGauge(prometheus.GaugeOpts{
+		Name: "prometheus_tsdb_retention_limit_seconds",
+		Help: "How long to retain samples in storage.",
+	})
 	m.sizeRetentionCount = prometheus.NewCounter(prometheus.CounterOpts{
 		Name: "prometheus_tsdb_size_retentions_total",
 		Help: "The number of times that blocks were deleted because the maximum number of bytes was exceeded.",
@@ -341,6 +346,7 @@ func newDBMetrics(db *DB, r prometheus.Registerer) *dbMetrics {
 			m.tombCleanTimer,
 			m.blocksBytes,
 			m.maxBytes,
+			m.retentionDuration,
 		)
 	}
 	return m
@@ -580,7 +586,14 @@ func (db *DBReadOnly) Blocks() ([]BlockReader, error) {
 	}
 
 	slices.SortFunc(loadable, func(a, b *Block) int {
-		return int(a.Meta().MinTime - b.Meta().MinTime)
+		switch {
+		case a.Meta().MinTime < b.Meta().MinTime:
+			return -1
+		case a.Meta().MinTime > b.Meta().MinTime:
+			return 1
+		default:
+			return 0
+		}
 	})
 
 	blockMetas := make([]BlockMeta, 0, len(loadable))
@@ -870,6 +883,7 @@ func open(dir string, l log.Logger, r prometheus.Registerer, opts *Options, rngs
 		maxBytes = 0
 	}
 	db.metrics.maxBytes.Set(float64(maxBytes))
+	db.metrics.retentionDuration.Set((time.Duration(opts.RetentionDuration) * time.Millisecond).Seconds())
 
 	if err := db.reload(); err != nil {
 		return nil, err
@@ -887,13 +901,13 @@ func open(dir string, l log.Logger, r prometheus.Registerer, opts *Options, rngs
 
 	if initErr := db.head.Init(minValidTime); initErr != nil {
 		db.head.metrics.walCorruptionsTotal.Inc()
-		isOOOErr := isErrLoadOOOWal(initErr)
+		e, ok := initErr.(*errLoadWbl)
-		if isOOOErr {
+		if ok {
-			level.Warn(db.logger).Log("msg", "Encountered OOO WAL read error, attempting repair", "err", initErr)
+			level.Warn(db.logger).Log("msg", "Encountered WBL read error, attempting repair", "err", initErr)
-			if err := wbl.Repair(initErr); err != nil {
+			if err := wbl.Repair(e.err); err != nil {
-				return nil, errors.Wrap(err, "repair corrupted OOO WAL")
+				return nil, errors.Wrap(err, "repair corrupted WBL")
 			}
-			level.Info(db.logger).Log("msg", "Successfully repaired OOO WAL")
+			level.Info(db.logger).Log("msg", "Successfully repaired WBL")
 		} else {
 			level.Warn(db.logger).Log("msg", "Encountered WAL read error, attempting repair", "err", initErr)
 			if err := wal.Repair(initErr); err != nil {
@@ -1448,7 +1462,14 @@ func (db *DB) reloadBlocks() (err error) {
 	db.metrics.blocksBytes.Set(float64(blocksSize))
 
 	slices.SortFunc(toLoad, func(a, b *Block) int {
-		return int(a.Meta().MinTime - b.Meta().MinTime)
+		switch {
+		case a.Meta().MinTime < b.Meta().MinTime:
+			return -1
+		case a.Meta().MinTime > b.Meta().MinTime:
+			return 1
+		default:
+			return 0
+		}
 	})
 
 	// Swap new blocks first for subsequently created readers to be seen.
@@ -1518,7 +1539,14 @@ func deletableBlocks(db *DB, blocks []*Block) map[ulid.ULID]struct{} {
 	// Sort the blocks by time - newest to oldest (largest to smallest timestamp).
 	// This ensures that the retentions will remove the oldest  blocks.
 	slices.SortFunc(blocks, func(a, b *Block) int {
-		return int(b.Meta().MaxTime - a.Meta().MaxTime)
+		switch {
+		case b.Meta().MaxTime < a.Meta().MaxTime:
+			return -1
+		case b.Meta().MaxTime > a.Meta().MaxTime:
+			return 1
+		default:
+			return 0
+		}
 	})
 
 	for _, block := range blocks {

tsdb/db_test.go

@@ -1494,6 +1494,19 @@ func TestTimeRetention(t *testing.T) {
 	require.Equal(t, expBlocks[len(expBlocks)-1].MaxTime, actBlocks[len(actBlocks)-1].meta.MaxTime)
 }
 
+func TestRetentionDurationMetric(t *testing.T) {
+	db := openTestDB(t, &Options{
+		RetentionDuration: 1000,
+	}, []int64{100})
+	defer func() {
+		require.NoError(t, db.Close())
+	}()
+
+	expRetentionDuration := 1.0
+	actRetentionDuration := prom_testutil.ToFloat64(db.metrics.retentionDuration)
+	require.Equal(t, expRetentionDuration, actRetentionDuration, "metric retention duration mismatch")
+}
+
 func TestSizeRetention(t *testing.T) {
 	opts := DefaultOptions()
 	opts.OutOfOrderTimeWindow = 100
@@ -3793,7 +3806,7 @@ func TestOOOWALWrite(t *testing.T) {
 	actRecs := getRecords(path.Join(dir, "wal"))
 	require.Equal(t, inOrderRecords, actRecs)
 
-	// The OOO WAL.
+	// The WBL.
 	actRecs = getRecords(path.Join(dir, wlog.WblDirName))
 	require.Equal(t, oooRecords, actRecs)
 }

tsdb/head.go

@@ -765,17 +765,17 @@ func (h *Head) Init(minValidTime int64) error {
 
 	wblReplayStart := time.Now()
 	if h.wbl != nil {
-		// Replay OOO WAL.
+		// Replay WBL.
 		startFrom, endAt, e = wlog.Segments(h.wbl.Dir())
 		if e != nil {
-			return errors.Wrap(e, "finding OOO WAL segments")
+			return &errLoadWbl{errors.Wrap(e, "finding WBL segments")}
 		}
 		h.startWALReplayStatus(startFrom, endAt)
 
 		for i := startFrom; i <= endAt; i++ {
 			s, err := wlog.OpenReadSegment(wlog.SegmentName(h.wbl.Dir(), i))
 			if err != nil {
-				return errors.Wrap(err, fmt.Sprintf("open WBL segment: %d", i))
+				return &errLoadWbl{errors.Wrap(err, fmt.Sprintf("open WBL segment: %d", i))}
 			}
 
 			sr := wlog.NewSegmentBufReader(s)
@@ -784,7 +784,7 @@ func (h *Head) Init(minValidTime int64) error {
 				level.Warn(h.logger).Log("msg", "Error while closing the wbl segments reader", "err", err)
 			}
 			if err != nil {
-				return err
+				return &errLoadWbl{err}
 			}
 			level.Info(h.logger).Log("msg", "WBL segment loaded", "segment", i, "maxSegment", endAt)
 			h.updateWALReplayStatusRead(i)

tsdb/head_test.go

@@ -2086,6 +2086,79 @@ func TestWalRepair_DecodingError(t *testing.T) {
 	}
 }
 
+// TestWblRepair_DecodingError ensures that a repair is run for an error
+// when decoding a record.
+func TestWblRepair_DecodingError(t *testing.T) {
+	var enc record.Encoder
+	corrFunc := func(rec []byte) []byte {
+		return rec[:3]
+	}
+	rec := enc.Samples([]record.RefSample{{Ref: 0, T: 99, V: 1}}, []byte{})
+	totalRecs := 9
+	expRecs := 5
+	dir := t.TempDir()
+
+	// Fill the wbl and corrupt it.
+	{
+		wal, err := wlog.New(nil, nil, filepath.Join(dir, "wal"), wlog.CompressionNone)
+		require.NoError(t, err)
+		wbl, err := wlog.New(nil, nil, filepath.Join(dir, "wbl"), wlog.CompressionNone)
+		require.NoError(t, err)
+
+		for i := 1; i <= totalRecs; i++ {
+			// At this point insert a corrupted record.
+			if i-1 == expRecs {
+				require.NoError(t, wbl.Log(corrFunc(rec)))
+				continue
+			}
+			require.NoError(t, wbl.Log(rec))
+		}
+
+		opts := DefaultHeadOptions()
+		opts.ChunkRange = 1
+		opts.ChunkDirRoot = wal.Dir()
+		opts.OutOfOrderCapMax.Store(30)
+		opts.OutOfOrderTimeWindow.Store(1000 * time.Minute.Milliseconds())
+		h, err := NewHead(nil, nil, wal, wbl, opts, nil)
+		require.NoError(t, err)
+		require.Equal(t, 0.0, prom_testutil.ToFloat64(h.metrics.walCorruptionsTotal))
+		initErr := h.Init(math.MinInt64)
+
+		_, ok := initErr.(*errLoadWbl)
+		require.True(t, ok) // Wbl errors are wrapped into errLoadWbl, make sure we can unwrap it.
+
+		err = errors.Cause(initErr) // So that we can pick up errors even if wrapped.
+		_, corrErr := err.(*wlog.CorruptionErr)
+		require.True(t, corrErr, "reading the wal didn't return corruption error")
+		require.NoError(t, h.Close()) // Head will close the wal as well.
+	}
+
+	// Open the db to trigger a repair.
+	{
+		db, err := Open(dir, nil, nil, DefaultOptions(), nil)
+		require.NoError(t, err)
+		defer func() {
+			require.NoError(t, db.Close())
+		}()
+		require.Equal(t, 1.0, prom_testutil.ToFloat64(db.head.metrics.walCorruptionsTotal))
+	}
+
+	// Read the wbl content after the repair.
+	{
+		sr, err := wlog.NewSegmentsReader(filepath.Join(dir, "wbl"))
+		require.NoError(t, err)
+		defer sr.Close()
+		r := wlog.NewReader(sr)
+
+		var actRec int
+		for r.Next() {
+			actRec++
+		}
+		require.NoError(t, r.Err())
+		require.Equal(t, expRecs, actRec, "Wrong number of intact records")
+	}
+}
+
 func TestHeadReadWriterRepair(t *testing.T) {
 	dir := t.TempDir()
 
@@ -4446,9 +4519,8 @@ func TestChunkSnapshotTakenAfterIncompleteSnapshot(t *testing.T) {
 	require.Greater(t, offset, 0)
 }
 
-// TestOOOWalReplay checks the replay at a low level.
+// TestWBLReplay checks the replay at a low level.
-// TODO(codesome): Needs test for ooo WAL repair.
+func TestWBLReplay(t *testing.T) {
-func TestOOOWalReplay(t *testing.T) {
 	dir := t.TempDir()
 	wal, err := wlog.NewSize(nil, nil, filepath.Join(dir, "wal"), 32768, wlog.CompressionSnappy)
 	require.NoError(t, err)

tsdb/head_wal.go

@@ -825,22 +825,14 @@ func (e errLoadWbl) Error() string {
 	return e.err.Error()
 }
 
-// To support errors.Cause().
 func (e errLoadWbl) Cause() error {
 	return e.err
 }
 
-// To support errors.Unwrap().
 func (e errLoadWbl) Unwrap() error {
 	return e.err
 }
 
-// isErrLoadOOOWal returns a boolean if the error is errLoadWbl.
-func isErrLoadOOOWal(err error) bool {
-	_, ok := err.(*errLoadWbl)
-	return ok
-}
-
 type wblSubsetProcessor struct {
 	input  chan wblSubsetProcessorInputItem
 	output chan []record.RefSample

tsdb/index/postings.go

@@ -413,6 +413,7 @@ type Postings interface {
 	Seek(v storage.SeriesRef) bool
 
 	// At returns the value at the current iterator position.
+	// At should only be called after a successful call to Next or Seek.
 	At() storage.SeriesRef
 
 	// Err returns the last error of the iterator.
@@ -747,7 +748,7 @@ func (rp *removedPostings) Err() error {
 // ListPostings implements the Postings interface over a plain list.
 type ListPostings struct {
 	list []storage.SeriesRef
-	pos  int
+	cur  storage.SeriesRef
 }
 
 func NewListPostings(list []storage.SeriesRef) Postings {
@@ -759,34 +760,39 @@ func newListPostings(list ...storage.SeriesRef) *ListPostings {
 }
 
 func (it *ListPostings) At() storage.SeriesRef {
-	return it.list[it.pos-1]
+	return it.cur
 }
 
 func (it *ListPostings) Next() bool {
-	if it.pos < len(it.list) {
+	if len(it.list) > 0 {
-		it.pos++
+		it.cur = it.list[0]
+		it.list = it.list[1:]
 		return true
 	}
+	it.cur = 0
 	return false
 }
 
 func (it *ListPostings) Seek(x storage.SeriesRef) bool {
-	if it.pos == 0 {
-		it.pos++
-	}
-	if it.pos > len(it.list) {
-		return false
-	}
 	// If the current value satisfies, then return.
-	if it.list[it.pos-1] >= x {
+	if it.cur >= x {
 		return true
 	}
+	if len(it.list) == 0 {
+		return false
+	}
 
 	// Do binary search between current position and end.
-	it.pos = sort.Search(len(it.list[it.pos-1:]), func(i int) bool {
+	i := sort.Search(len(it.list), func(i int) bool {
-		return it.list[i+it.pos-1] >= x
+		return it.list[i] >= x
-	}) + it.pos
+	})
-	return it.pos-1 < len(it.list)
+	if i < len(it.list) {
+		it.cur = it.list[i]
+		it.list = it.list[i+1:]
+		return true
+	}
+	it.list = nil
+	return false
 }
 
 func (it *ListPostings) Err() error {

tsdb/index/postings_test.go

@@ -1242,6 +1242,8 @@ func TestListPostings(t *testing.T) {
 	})
 }
 
+// BenchmarkListPostings benchmarks ListPostings by iterating Next/At sequentially.
+// See also BenchmarkIntersect as it performs more `At` calls than `Next` calls when intersecting.
 func BenchmarkListPostings(b *testing.B) {
 	const maxCount = 1e6
 	input := make([]storage.SeriesRef, maxCount)

tsdb/index/postingsstats.go

@@ -63,6 +63,15 @@ func (m *maxHeap) push(item Stat) {
 }
 
 func (m *maxHeap) get() []Stat {
-	slices.SortFunc(m.Items, func(a, b Stat) int { return int(b.Count - a.Count) })
+	slices.SortFunc(m.Items, func(a, b Stat) int {
+		switch {
+		case b.Count < a.Count:
+			return -1
+		case b.Count > a.Count:
+			return 1
+		default:
+			return 0
+		}
+	})
 	return m.Items
 }

tsdb/ooo_head_read.go

@@ -178,17 +178,39 @@ type chunkMetaAndChunkDiskMapperRef struct {
 }
 
 func refLessByMinTimeAndMinRef(a, b chunkMetaAndChunkDiskMapperRef) int {
-	if a.meta.MinTime == b.meta.MinTime {
+	switch {
-		return int(a.meta.Ref - b.meta.Ref)
+	case a.meta.MinTime < b.meta.MinTime:
+		return -1
+	case a.meta.MinTime > b.meta.MinTime:
+		return 1
+	}
+
+	switch {
+	case a.meta.Ref < b.meta.Ref:
+		return -1
+	case a.meta.Ref > b.meta.Ref:
+		return 1
+	default:
+		return 0
 	}
-	return int(a.meta.MinTime - b.meta.MinTime)
 }
 
 func lessByMinTimeAndMinRef(a, b chunks.Meta) int {
-	if a.MinTime == b.MinTime {
+	switch {
-		return int(a.Ref - b.Ref)
+	case a.MinTime < b.MinTime:
+		return -1
+	case a.MinTime > b.MinTime:
+		return 1
+	}
+
+	switch {
+	case a.Ref < b.Ref:
+		return -1
+	case a.Ref > b.Ref:
+		return 1
+	default:
+		return 0
 	}
-	return int(a.MinTime - b.MinTime)
 }
 
 func (oh *OOOHeadIndexReader) Postings(ctx context.Context, name string, values ...string) (index.Postings, error) {

tsdb/record/record.go

@@ -304,6 +304,10 @@ func (d *Decoder) Samples(rec []byte, samples []RefSample) ([]RefSample, error)
 		baseRef  = dec.Be64()
 		baseTime = dec.Be64int64()
 	)
+	// Allow 1 byte for each varint and 8 for the value; the output slice must be at least that big.
+	if minSize := dec.Len() / (1 + 1 + 8); cap(samples) < minSize {
+		samples = make([]RefSample, 0, minSize)
+	}
 	for len(dec.B) > 0 && dec.Err() == nil {
 		dref := dec.Varint64()
 		dtime := dec.Varint64()

util/annotations/annotations.go

@@ -105,7 +105,8 @@ var (
 	MixedFloatsHistogramsWarning        = fmt.Errorf("%w: encountered a mix of histograms and floats for metric name", PromQLWarning)
 	MixedClassicNativeHistogramsWarning = fmt.Errorf("%w: vector contains a mix of classic and native histograms for metric name", PromQLWarning)
 
-	PossibleNonCounterInfo = fmt.Errorf("%w: metric might not be a counter, name does not end in _total/_sum/_count:", PromQLInfo)
+	PossibleNonCounterInfo                  = fmt.Errorf("%w: metric might not be a counter, name does not end in _total/_sum/_count/_bucket:", PromQLInfo)
+	HistogramQuantileForcedMonotonicityInfo = fmt.Errorf("%w: input to histogram_quantile needed to be fixed for monotonicity (and may give inaccurate results) for metric name", PromQLInfo)
 )
 
 type annoErr struct {
@@ -155,11 +156,20 @@ func NewMixedClassicNativeHistogramsWarning(metricName string, pos posrange.Posi
 	}
 }
 
-// NewPossibleNonCounterInfo is used when a counter metric does not have the suffixes
+// NewPossibleNonCounterInfo is used when a named counter metric with only float samples does not
-// _total, _sum or _count.
+// have the suffixes _total, _sum, _count, or _bucket.
 func NewPossibleNonCounterInfo(metricName string, pos posrange.PositionRange) annoErr {
 	return annoErr{
 		PositionRange: pos,
 		Err:           fmt.Errorf("%w %q", PossibleNonCounterInfo, metricName),
 	}
 }
+
+// NewHistogramQuantileForcedMonotonicityInfo is used when the input (classic histograms) to
+// histogram_quantile needs to be forced to be monotonic.
+func NewHistogramQuantileForcedMonotonicityInfo(metricName string, pos posrange.PositionRange) annoErr {
+	return annoErr{
+		PositionRange: pos,
+		Err:           fmt.Errorf("%w %q", HistogramQuantileForcedMonotonicityInfo, metricName),
+	}
+}

web/ui/react-app/src/components/withStartingIndicator.test.tsx

@@ -2,7 +2,7 @@ import * as React from 'react';
 import { shallow } from 'enzyme';
 import { WALReplayData } from '../types/types';
 import { StartingContent } from './withStartingIndicator';
-import { Progress } from 'reactstrap';
+import { Alert, Progress } from 'reactstrap';
 
 describe('Starting', () => {
   describe('progress bar', () => {
@@ -52,5 +52,17 @@ describe('Starting', () => {
       expect(progress.prop('value')).toBe(21);
       expect(progress.prop('color')).toBe('success');
     });
+
+    it('shows unexpected error', () => {
+      const status: WALReplayData = {
+        min: 0,
+        max: 20,
+        current: 0,
+      };
+
+      const starting = shallow(<StartingContent status={status} isUnexpected={true} />);
+      const alert = starting.find(Alert);
+      expect(alert.prop('color')).toBe('danger');
+    });
   });
 });

web/ui/react-app/src/components/withStartingIndicator.tsx

@@ -51,7 +51,7 @@ export const withStartingIndicator =
     const { ready, walReplayStatus, isUnexpected } = useFetchReadyInterval(pathPrefix);
     const staticReady = useReady();
 
-    if (staticReady || ready || isUnexpected) {
+    if (staticReady || ready) {
       return <Page {...(rest as T)} />;
     }
 

web/ui/react-app/src/pages/rules/RulesContent.tsx

@@ -13,6 +13,7 @@ interface RulesContentProps {
 interface RuleGroup {
   name: string;
   file: string;
+  interval: string;
   rules: Rule[];
   evaluationTime: string;
   lastEvaluation: string;
@@ -58,13 +59,16 @@ export const RulesContent: FC<RulesContentProps> = ({ response }) => {
             <Table bordered key={i}>
               <thead>
                 <tr>
-                  <td colSpan={3}>
+                  <td>
                     <a href={'#' + g.name}>
                       <h4 id={g.name} className="text-break">
                         {g.name}
                       </h4>
                     </a>
                   </td>
+                  <td colSpan={2}>
+                    <h4>Interval: {humanizeDuration(parseFloat(g.interval) * 1000)}</h4>
+                  </td>
                   <td>
                     <h4>{formatRelative(g.lastEvaluation, now())}</h4>
                   </td>