mirror of
https://github.com/prometheus/prometheus.git
synced 2024-12-24 21:24:05 -08:00
434 lines
13 KiB
Go
434 lines
13 KiB
Go
// 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 web
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"net/http"
|
|
"net/http/httptest"
|
|
"sort"
|
|
"strconv"
|
|
"strings"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/prometheus/common/model"
|
|
"github.com/stretchr/testify/require"
|
|
|
|
"github.com/prometheus/prometheus/config"
|
|
"github.com/prometheus/prometheus/model/histogram"
|
|
"github.com/prometheus/prometheus/model/labels"
|
|
"github.com/prometheus/prometheus/model/textparse"
|
|
"github.com/prometheus/prometheus/promql"
|
|
"github.com/prometheus/prometheus/promql/promqltest"
|
|
"github.com/prometheus/prometheus/storage"
|
|
"github.com/prometheus/prometheus/tsdb"
|
|
"github.com/prometheus/prometheus/util/teststorage"
|
|
"github.com/prometheus/prometheus/util/testutil"
|
|
)
|
|
|
|
var scenarios = map[string]struct {
|
|
params string
|
|
externalLabels labels.Labels
|
|
code int
|
|
body string
|
|
}{
|
|
"empty": {
|
|
params: "",
|
|
code: http.StatusOK,
|
|
body: ``,
|
|
},
|
|
"match nothing": {
|
|
params: "match[]=does_not_match_anything",
|
|
code: http.StatusOK,
|
|
body: ``,
|
|
},
|
|
"invalid params from the beginning": {
|
|
params: "match[]=-not-a-valid-metric-name",
|
|
code: http.StatusBadRequest,
|
|
body: `1:1: parse error: unexpected <op:->
|
|
`,
|
|
},
|
|
"invalid params somewhere in the middle": {
|
|
params: "match[]=not-a-valid-metric-name",
|
|
code: http.StatusBadRequest,
|
|
body: `1:4: parse error: unexpected <op:->
|
|
`,
|
|
},
|
|
"test_metric1": {
|
|
params: "match[]=test_metric1",
|
|
code: http.StatusOK,
|
|
body: `# TYPE test_metric1 untyped
|
|
test_metric1{foo="bar",instance="i"} 10000 6000000
|
|
test_metric1{foo="boo",instance="i"} 1 6000000
|
|
`,
|
|
},
|
|
"test_metric2": {
|
|
params: "match[]=test_metric2",
|
|
code: http.StatusOK,
|
|
body: `# TYPE test_metric2 untyped
|
|
test_metric2{foo="boo",instance="i"} 1 6000000
|
|
`,
|
|
},
|
|
"test_metric_without_labels": {
|
|
params: "match[]=test_metric_without_labels",
|
|
code: http.StatusOK,
|
|
body: `# TYPE test_metric_without_labels untyped
|
|
test_metric_without_labels{instance=""} 1001 6000000
|
|
`,
|
|
},
|
|
"test_stale_metric": {
|
|
params: "match[]=test_metric_stale",
|
|
code: http.StatusOK,
|
|
body: ``,
|
|
},
|
|
"test_old_metric": {
|
|
params: "match[]=test_metric_old",
|
|
code: http.StatusOK,
|
|
body: `# TYPE test_metric_old untyped
|
|
test_metric_old{instance=""} 981 5880000
|
|
`,
|
|
},
|
|
"{foo='boo'}": {
|
|
params: "match[]={foo='boo'}",
|
|
code: http.StatusOK,
|
|
body: `# TYPE test_metric1 untyped
|
|
test_metric1{foo="boo",instance="i"} 1 6000000
|
|
# TYPE test_metric2 untyped
|
|
test_metric2{foo="boo",instance="i"} 1 6000000
|
|
`,
|
|
},
|
|
"two matchers": {
|
|
params: "match[]=test_metric1&match[]=test_metric2",
|
|
code: http.StatusOK,
|
|
body: `# TYPE test_metric1 untyped
|
|
test_metric1{foo="bar",instance="i"} 10000 6000000
|
|
test_metric1{foo="boo",instance="i"} 1 6000000
|
|
# TYPE test_metric2 untyped
|
|
test_metric2{foo="boo",instance="i"} 1 6000000
|
|
`,
|
|
},
|
|
"two matchers with overlap": {
|
|
params: "match[]={__name__=~'test_metric1'}&match[]={foo='bar'}",
|
|
code: http.StatusOK,
|
|
body: `# TYPE test_metric1 untyped
|
|
test_metric1{foo="bar",instance="i"} 10000 6000000
|
|
test_metric1{foo="boo",instance="i"} 1 6000000
|
|
`,
|
|
},
|
|
"everything": {
|
|
params: "match[]={__name__=~'.%2b'}", // '%2b' is an URL-encoded '+'.
|
|
code: http.StatusOK,
|
|
body: `# TYPE test_metric1 untyped
|
|
test_metric1{foo="bar",instance="i"} 10000 6000000
|
|
test_metric1{foo="boo",instance="i"} 1 6000000
|
|
# TYPE test_metric2 untyped
|
|
test_metric2{foo="boo",instance="i"} 1 6000000
|
|
# TYPE test_metric_old untyped
|
|
test_metric_old{instance=""} 981 5880000
|
|
# TYPE test_metric_without_labels untyped
|
|
test_metric_without_labels{instance=""} 1001 6000000
|
|
`,
|
|
},
|
|
"empty label value matches everything that doesn't have that label": {
|
|
params: "match[]={foo='',__name__=~'.%2b'}",
|
|
code: http.StatusOK,
|
|
body: `# TYPE test_metric_old untyped
|
|
test_metric_old{instance=""} 981 5880000
|
|
# TYPE test_metric_without_labels untyped
|
|
test_metric_without_labels{instance=""} 1001 6000000
|
|
`,
|
|
},
|
|
"empty label value for a label that doesn't exist at all, matches everything": {
|
|
params: "match[]={bar='',__name__=~'.%2b'}",
|
|
code: http.StatusOK,
|
|
body: `# TYPE test_metric1 untyped
|
|
test_metric1{foo="bar",instance="i"} 10000 6000000
|
|
test_metric1{foo="boo",instance="i"} 1 6000000
|
|
# TYPE test_metric2 untyped
|
|
test_metric2{foo="boo",instance="i"} 1 6000000
|
|
# TYPE test_metric_old untyped
|
|
test_metric_old{instance=""} 981 5880000
|
|
# TYPE test_metric_without_labels untyped
|
|
test_metric_without_labels{instance=""} 1001 6000000
|
|
`,
|
|
},
|
|
"external labels are added if not already present": {
|
|
params: "match[]={__name__=~'.%2b'}", // '%2b' is an URL-encoded '+'.
|
|
externalLabels: labels.FromStrings("foo", "baz", "zone", "ie"),
|
|
code: http.StatusOK,
|
|
body: `# TYPE test_metric1 untyped
|
|
test_metric1{foo="bar",instance="i",zone="ie"} 10000 6000000
|
|
test_metric1{foo="boo",instance="i",zone="ie"} 1 6000000
|
|
# TYPE test_metric2 untyped
|
|
test_metric2{foo="boo",instance="i",zone="ie"} 1 6000000
|
|
# TYPE test_metric_old untyped
|
|
test_metric_old{foo="baz",instance="",zone="ie"} 981 5880000
|
|
# TYPE test_metric_without_labels untyped
|
|
test_metric_without_labels{foo="baz",instance="",zone="ie"} 1001 6000000
|
|
`,
|
|
},
|
|
"instance is an external label": {
|
|
// This makes no sense as a configuration, but we should
|
|
// know what it does anyway.
|
|
params: "match[]={__name__=~'.%2b'}", // '%2b' is an URL-encoded '+'.
|
|
externalLabels: labels.FromStrings("instance", "baz"),
|
|
code: http.StatusOK,
|
|
body: `# TYPE test_metric1 untyped
|
|
test_metric1{foo="bar",instance="i"} 10000 6000000
|
|
test_metric1{foo="boo",instance="i"} 1 6000000
|
|
# TYPE test_metric2 untyped
|
|
test_metric2{foo="boo",instance="i"} 1 6000000
|
|
# TYPE test_metric_old untyped
|
|
test_metric_old{instance="baz"} 981 5880000
|
|
# TYPE test_metric_without_labels untyped
|
|
test_metric_without_labels{instance="baz"} 1001 6000000
|
|
`,
|
|
},
|
|
}
|
|
|
|
func TestFederation(t *testing.T) {
|
|
storage := promqltest.LoadedStorage(t, `
|
|
load 1m
|
|
test_metric1{foo="bar",instance="i"} 0+100x100
|
|
test_metric1{foo="boo",instance="i"} 1+0x100
|
|
test_metric2{foo="boo",instance="i"} 1+0x100
|
|
test_metric_without_labels 1+10x100
|
|
test_metric_stale 1+10x99 stale
|
|
test_metric_old 1+10x98
|
|
`)
|
|
t.Cleanup(func() { storage.Close() })
|
|
|
|
h := &Handler{
|
|
localStorage: &dbAdapter{storage.DB},
|
|
lookbackDelta: 5 * time.Minute,
|
|
now: func() model.Time { return 101 * 60 * 1000 }, // 101min after epoch.
|
|
config: &config.Config{
|
|
GlobalConfig: config.GlobalConfig{},
|
|
},
|
|
}
|
|
|
|
for name, scenario := range scenarios {
|
|
t.Run(name, func(t *testing.T) {
|
|
h.config.GlobalConfig.ExternalLabels = scenario.externalLabels
|
|
req := httptest.NewRequest(http.MethodGet, "http://example.org/federate?"+scenario.params, nil)
|
|
res := httptest.NewRecorder()
|
|
|
|
h.federation(res, req)
|
|
require.Equal(t, scenario.code, res.Code)
|
|
require.Equal(t, scenario.body, normalizeBody(res.Body))
|
|
})
|
|
}
|
|
}
|
|
|
|
type notReadyReadStorage struct {
|
|
LocalStorage
|
|
}
|
|
|
|
func (notReadyReadStorage) Querier(int64, int64) (storage.Querier, error) {
|
|
return nil, fmt.Errorf("wrap: %w", tsdb.ErrNotReady)
|
|
}
|
|
|
|
func (notReadyReadStorage) StartTime() (int64, error) {
|
|
return 0, fmt.Errorf("wrap: %w", tsdb.ErrNotReady)
|
|
}
|
|
|
|
func (notReadyReadStorage) Stats(string, int) (*tsdb.Stats, error) {
|
|
return nil, fmt.Errorf("wrap: %w", tsdb.ErrNotReady)
|
|
}
|
|
|
|
// Regression test for https://github.com/prometheus/prometheus/issues/7181.
|
|
func TestFederation_NotReady(t *testing.T) {
|
|
for name, scenario := range scenarios {
|
|
t.Run(name, func(t *testing.T) {
|
|
h := &Handler{
|
|
localStorage: notReadyReadStorage{},
|
|
lookbackDelta: 5 * time.Minute,
|
|
now: func() model.Time { return 101 * 60 * 1000 }, // 101min after epoch.
|
|
config: &config.Config{
|
|
GlobalConfig: config.GlobalConfig{
|
|
ExternalLabels: scenario.externalLabels,
|
|
},
|
|
},
|
|
}
|
|
|
|
req := httptest.NewRequest(http.MethodGet, "http://example.org/federate?"+scenario.params, nil)
|
|
res := httptest.NewRecorder()
|
|
|
|
h.federation(res, req)
|
|
if scenario.code == http.StatusBadRequest {
|
|
// Request are expected to be checked before DB readiness.
|
|
require.Equal(t, http.StatusBadRequest, res.Code)
|
|
return
|
|
}
|
|
require.Equal(t, http.StatusServiceUnavailable, res.Code)
|
|
})
|
|
}
|
|
}
|
|
|
|
// normalizeBody sorts the lines within a metric to make it easy to verify the body.
|
|
// (Federation is not taking care of sorting within a metric family.)
|
|
func normalizeBody(body *bytes.Buffer) string {
|
|
var (
|
|
lines []string
|
|
lastHash int
|
|
)
|
|
for line, err := body.ReadString('\n'); err == nil; line, err = body.ReadString('\n') {
|
|
if line[0] == '#' && len(lines) > 0 {
|
|
sort.Strings(lines[lastHash+1:])
|
|
lastHash = len(lines)
|
|
}
|
|
lines = append(lines, line)
|
|
}
|
|
if len(lines) > 0 {
|
|
sort.Strings(lines[lastHash+1:])
|
|
}
|
|
return strings.Join(lines, "")
|
|
}
|
|
|
|
func TestFederationWithNativeHistograms(t *testing.T) {
|
|
storage := teststorage.New(t)
|
|
t.Cleanup(func() { storage.Close() })
|
|
|
|
var expVec promql.Vector
|
|
|
|
db := storage.DB
|
|
hist := &histogram.Histogram{
|
|
Count: 12,
|
|
ZeroCount: 2,
|
|
ZeroThreshold: 0.001,
|
|
Sum: 39.4,
|
|
Schema: 1,
|
|
PositiveSpans: []histogram.Span{
|
|
{Offset: 0, Length: 2},
|
|
{Offset: 1, Length: 2},
|
|
},
|
|
PositiveBuckets: []int64{1, 1, -1, 0},
|
|
NegativeSpans: []histogram.Span{
|
|
{Offset: 0, Length: 2},
|
|
{Offset: 1, Length: 2},
|
|
},
|
|
NegativeBuckets: []int64{1, 1, -1, 0},
|
|
}
|
|
histWithoutZeroBucket := &histogram.Histogram{
|
|
Count: 20,
|
|
Sum: 99.23,
|
|
Schema: 1,
|
|
PositiveSpans: []histogram.Span{
|
|
{Offset: 0, Length: 2},
|
|
{Offset: 1, Length: 2},
|
|
},
|
|
PositiveBuckets: []int64{2, 2, -2, 0},
|
|
NegativeSpans: []histogram.Span{
|
|
{Offset: 0, Length: 2},
|
|
{Offset: 1, Length: 2},
|
|
},
|
|
NegativeBuckets: []int64{2, 2, -2, 0},
|
|
}
|
|
app := db.Appender(context.Background())
|
|
for i := 0; i < 6; i++ {
|
|
l := labels.FromStrings("__name__", "test_metric", "foo", strconv.Itoa(i))
|
|
expL := labels.FromStrings("__name__", "test_metric", "instance", "", "foo", strconv.Itoa(i))
|
|
var err error
|
|
switch i {
|
|
case 0, 3:
|
|
_, err = app.Append(0, l, 100*60*1000, float64(i*100))
|
|
expVec = append(expVec, promql.Sample{
|
|
T: 100 * 60 * 1000,
|
|
F: float64(i * 100),
|
|
Metric: expL,
|
|
})
|
|
case 4:
|
|
_, err = app.AppendHistogram(0, l, 100*60*1000, histWithoutZeroBucket.Copy(), nil)
|
|
expVec = append(expVec, promql.Sample{
|
|
T: 100 * 60 * 1000,
|
|
H: histWithoutZeroBucket.ToFloat(nil),
|
|
Metric: expL,
|
|
})
|
|
default:
|
|
hist.ZeroCount++
|
|
hist.Count++
|
|
_, err = app.AppendHistogram(0, l, 100*60*1000, hist.Copy(), nil)
|
|
expVec = append(expVec, promql.Sample{
|
|
T: 100 * 60 * 1000,
|
|
H: hist.ToFloat(nil),
|
|
Metric: expL,
|
|
})
|
|
}
|
|
require.NoError(t, err)
|
|
}
|
|
require.NoError(t, app.Commit())
|
|
|
|
h := &Handler{
|
|
localStorage: &dbAdapter{db},
|
|
lookbackDelta: 5 * time.Minute,
|
|
now: func() model.Time { return 101 * 60 * 1000 }, // 101min after epoch.
|
|
config: &config.Config{
|
|
GlobalConfig: config.GlobalConfig{},
|
|
},
|
|
}
|
|
|
|
req := httptest.NewRequest(http.MethodGet, "http://example.org/federate?match[]=test_metric", nil)
|
|
req.Header.Add("Accept", `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`)
|
|
res := httptest.NewRecorder()
|
|
|
|
h.federation(res, req)
|
|
|
|
require.Equal(t, http.StatusOK, res.Code)
|
|
body, err := io.ReadAll(res.Body)
|
|
require.NoError(t, err)
|
|
p := textparse.NewProtobufParser(body, false, labels.NewSymbolTable())
|
|
var actVec promql.Vector
|
|
metricFamilies := 0
|
|
l := labels.Labels{}
|
|
for {
|
|
et, err := p.Next()
|
|
if err != nil && errors.Is(err, io.EOF) {
|
|
break
|
|
}
|
|
require.NoError(t, err)
|
|
if et == textparse.EntryHistogram || et == textparse.EntrySeries {
|
|
p.Metric(&l)
|
|
}
|
|
switch et {
|
|
case textparse.EntryHelp:
|
|
metricFamilies++
|
|
case textparse.EntryHistogram:
|
|
_, parsedTimestamp, h, fh := p.Histogram()
|
|
require.Nil(t, h)
|
|
actVec = append(actVec, promql.Sample{
|
|
T: *parsedTimestamp,
|
|
H: fh,
|
|
Metric: l,
|
|
})
|
|
case textparse.EntrySeries:
|
|
_, parsedTimestamp, f := p.Series()
|
|
actVec = append(actVec, promql.Sample{
|
|
T: *parsedTimestamp,
|
|
F: f,
|
|
Metric: l,
|
|
})
|
|
}
|
|
}
|
|
|
|
// TODO(codesome): Once PromQL is able to set the CounterResetHint on histograms,
|
|
// test it with switching histogram types for metric families.
|
|
require.Equal(t, 4, metricFamilies)
|
|
testutil.RequireEqual(t, expVec, actVec)
|
|
}
|