mirror of
https://github.com/prometheus/prometheus.git
synced 2025-02-02 08:31:11 -08:00
8fdfa8abea
i) Uses the more idiomatic Wrap and Wrapf methods for creating nested errors. ii) Fixes some incorrect usages of fmt.Errorf where the error messages don't have any formatting directives. iii) Does away with the use of fmt package for errors in favour of pkg/errors Signed-off-by: tariqibrahim <tariq181290@gmail.com>
411 lines
10 KiB
Go
411 lines
10 KiB
Go
// 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 scrape
|
|
|
|
import (
|
|
"strconv"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/pkg/errors"
|
|
"github.com/prometheus/common/model"
|
|
yaml "gopkg.in/yaml.v2"
|
|
|
|
"github.com/prometheus/prometheus/config"
|
|
"github.com/prometheus/prometheus/discovery/targetgroup"
|
|
"github.com/prometheus/prometheus/pkg/labels"
|
|
"github.com/prometheus/prometheus/pkg/relabel"
|
|
"github.com/prometheus/prometheus/util/testutil"
|
|
)
|
|
|
|
func TestPopulateLabels(t *testing.T) {
|
|
cases := []struct {
|
|
in labels.Labels
|
|
cfg *config.ScrapeConfig
|
|
res labels.Labels
|
|
resOrig labels.Labels
|
|
err error
|
|
}{
|
|
// Regular population of scrape config options.
|
|
{
|
|
in: labels.FromMap(map[string]string{
|
|
model.AddressLabel: "1.2.3.4:1000",
|
|
"custom": "value",
|
|
}),
|
|
cfg: &config.ScrapeConfig{
|
|
Scheme: "https",
|
|
MetricsPath: "/metrics",
|
|
JobName: "job",
|
|
},
|
|
res: labels.FromMap(map[string]string{
|
|
model.AddressLabel: "1.2.3.4:1000",
|
|
model.InstanceLabel: "1.2.3.4:1000",
|
|
model.SchemeLabel: "https",
|
|
model.MetricsPathLabel: "/metrics",
|
|
model.JobLabel: "job",
|
|
"custom": "value",
|
|
}),
|
|
resOrig: labels.FromMap(map[string]string{
|
|
model.AddressLabel: "1.2.3.4:1000",
|
|
model.SchemeLabel: "https",
|
|
model.MetricsPathLabel: "/metrics",
|
|
model.JobLabel: "job",
|
|
"custom": "value",
|
|
}),
|
|
},
|
|
// Pre-define/overwrite scrape config labels.
|
|
// Leave out port and expect it to be defaulted to scheme.
|
|
{
|
|
in: labels.FromMap(map[string]string{
|
|
model.AddressLabel: "1.2.3.4",
|
|
model.SchemeLabel: "http",
|
|
model.MetricsPathLabel: "/custom",
|
|
model.JobLabel: "custom-job",
|
|
}),
|
|
cfg: &config.ScrapeConfig{
|
|
Scheme: "https",
|
|
MetricsPath: "/metrics",
|
|
JobName: "job",
|
|
},
|
|
res: labels.FromMap(map[string]string{
|
|
model.AddressLabel: "1.2.3.4:80",
|
|
model.InstanceLabel: "1.2.3.4:80",
|
|
model.SchemeLabel: "http",
|
|
model.MetricsPathLabel: "/custom",
|
|
model.JobLabel: "custom-job",
|
|
}),
|
|
resOrig: labels.FromMap(map[string]string{
|
|
model.AddressLabel: "1.2.3.4",
|
|
model.SchemeLabel: "http",
|
|
model.MetricsPathLabel: "/custom",
|
|
model.JobLabel: "custom-job",
|
|
}),
|
|
},
|
|
// Provide instance label. HTTPS port default for IPv6.
|
|
{
|
|
in: labels.FromMap(map[string]string{
|
|
model.AddressLabel: "[::1]",
|
|
model.InstanceLabel: "custom-instance",
|
|
}),
|
|
cfg: &config.ScrapeConfig{
|
|
Scheme: "https",
|
|
MetricsPath: "/metrics",
|
|
JobName: "job",
|
|
},
|
|
res: labels.FromMap(map[string]string{
|
|
model.AddressLabel: "[::1]:443",
|
|
model.InstanceLabel: "custom-instance",
|
|
model.SchemeLabel: "https",
|
|
model.MetricsPathLabel: "/metrics",
|
|
model.JobLabel: "job",
|
|
}),
|
|
resOrig: labels.FromMap(map[string]string{
|
|
model.AddressLabel: "[::1]",
|
|
model.InstanceLabel: "custom-instance",
|
|
model.SchemeLabel: "https",
|
|
model.MetricsPathLabel: "/metrics",
|
|
model.JobLabel: "job",
|
|
}),
|
|
},
|
|
// Address label missing.
|
|
{
|
|
in: labels.FromStrings("custom", "value"),
|
|
cfg: &config.ScrapeConfig{
|
|
Scheme: "https",
|
|
MetricsPath: "/metrics",
|
|
JobName: "job",
|
|
},
|
|
res: nil,
|
|
resOrig: nil,
|
|
err: errors.New("no address"),
|
|
},
|
|
// Address label missing, but added in relabelling.
|
|
{
|
|
in: labels.FromStrings("custom", "host:1234"),
|
|
cfg: &config.ScrapeConfig{
|
|
Scheme: "https",
|
|
MetricsPath: "/metrics",
|
|
JobName: "job",
|
|
RelabelConfigs: []*relabel.Config{
|
|
{
|
|
Action: relabel.Replace,
|
|
Regex: relabel.MustNewRegexp("(.*)"),
|
|
SourceLabels: model.LabelNames{"custom"},
|
|
Replacement: "${1}",
|
|
TargetLabel: string(model.AddressLabel),
|
|
},
|
|
},
|
|
},
|
|
res: labels.FromMap(map[string]string{
|
|
model.AddressLabel: "host:1234",
|
|
model.InstanceLabel: "host:1234",
|
|
model.SchemeLabel: "https",
|
|
model.MetricsPathLabel: "/metrics",
|
|
model.JobLabel: "job",
|
|
"custom": "host:1234",
|
|
}),
|
|
resOrig: labels.FromMap(map[string]string{
|
|
model.SchemeLabel: "https",
|
|
model.MetricsPathLabel: "/metrics",
|
|
model.JobLabel: "job",
|
|
"custom": "host:1234",
|
|
}),
|
|
},
|
|
// Address label missing, but added in relabelling.
|
|
{
|
|
in: labels.FromStrings("custom", "host:1234"),
|
|
cfg: &config.ScrapeConfig{
|
|
Scheme: "https",
|
|
MetricsPath: "/metrics",
|
|
JobName: "job",
|
|
RelabelConfigs: []*relabel.Config{
|
|
{
|
|
Action: relabel.Replace,
|
|
Regex: relabel.MustNewRegexp("(.*)"),
|
|
SourceLabels: model.LabelNames{"custom"},
|
|
Replacement: "${1}",
|
|
TargetLabel: string(model.AddressLabel),
|
|
},
|
|
},
|
|
},
|
|
res: labels.FromMap(map[string]string{
|
|
model.AddressLabel: "host:1234",
|
|
model.InstanceLabel: "host:1234",
|
|
model.SchemeLabel: "https",
|
|
model.MetricsPathLabel: "/metrics",
|
|
model.JobLabel: "job",
|
|
"custom": "host:1234",
|
|
}),
|
|
resOrig: labels.FromMap(map[string]string{
|
|
model.SchemeLabel: "https",
|
|
model.MetricsPathLabel: "/metrics",
|
|
model.JobLabel: "job",
|
|
"custom": "host:1234",
|
|
}),
|
|
},
|
|
// Invalid UTF-8 in label.
|
|
{
|
|
in: labels.FromMap(map[string]string{
|
|
model.AddressLabel: "1.2.3.4:1000",
|
|
"custom": "\xbd",
|
|
}),
|
|
cfg: &config.ScrapeConfig{
|
|
Scheme: "https",
|
|
MetricsPath: "/metrics",
|
|
JobName: "job",
|
|
},
|
|
res: nil,
|
|
resOrig: nil,
|
|
err: errors.New("invalid label value for \"custom\": \"\\xbd\""),
|
|
},
|
|
}
|
|
for _, c := range cases {
|
|
in := c.in.Copy()
|
|
|
|
res, orig, err := populateLabels(c.in, c.cfg)
|
|
testutil.ErrorEqual(err, c.err)
|
|
testutil.Equals(t, c.in, in)
|
|
testutil.Equals(t, c.res, res)
|
|
testutil.Equals(t, c.resOrig, orig)
|
|
}
|
|
}
|
|
|
|
func loadConfiguration(t *testing.T, c string) *config.Config {
|
|
t.Helper()
|
|
|
|
cfg := &config.Config{}
|
|
if err := yaml.UnmarshalStrict([]byte(c), cfg); err != nil {
|
|
t.Fatalf("Unable to load YAML config: %s", err)
|
|
}
|
|
return cfg
|
|
}
|
|
|
|
func noopLoop() loop {
|
|
return &testLoop{
|
|
startFunc: func(interval, timeout time.Duration, errc chan<- error) {},
|
|
stopFunc: func() {},
|
|
}
|
|
}
|
|
|
|
func TestManagerApplyConfig(t *testing.T) {
|
|
// Valid initial configuration.
|
|
cfgText1 := `
|
|
scrape_configs:
|
|
- job_name: job1
|
|
static_configs:
|
|
- targets: ["foo:9090"]
|
|
`
|
|
// Invalid configuration.
|
|
cfgText2 := `
|
|
scrape_configs:
|
|
- job_name: job1
|
|
scheme: https
|
|
static_configs:
|
|
- targets: ["foo:9090"]
|
|
tls_config:
|
|
ca_file: /not/existing/ca/file
|
|
`
|
|
// Valid configuration.
|
|
cfgText3 := `
|
|
scrape_configs:
|
|
- job_name: job1
|
|
scheme: https
|
|
static_configs:
|
|
- targets: ["foo:9090"]
|
|
`
|
|
var (
|
|
cfg1 = loadConfiguration(t, cfgText1)
|
|
cfg2 = loadConfiguration(t, cfgText2)
|
|
cfg3 = loadConfiguration(t, cfgText3)
|
|
|
|
ch = make(chan struct{}, 1)
|
|
)
|
|
|
|
scrapeManager := NewManager(nil, nil)
|
|
newLoop := func(scrapeLoopOptions) loop {
|
|
ch <- struct{}{}
|
|
return noopLoop()
|
|
}
|
|
sp := &scrapePool{
|
|
appendable: &nopAppendable{},
|
|
activeTargets: map[uint64]*Target{},
|
|
loops: map[uint64]loop{
|
|
1: noopLoop(),
|
|
},
|
|
newLoop: newLoop,
|
|
logger: nil,
|
|
config: cfg1.ScrapeConfigs[0],
|
|
}
|
|
scrapeManager.scrapePools = map[string]*scrapePool{
|
|
"job1": sp,
|
|
}
|
|
|
|
// Apply the initial configuration.
|
|
if err := scrapeManager.ApplyConfig(cfg1); err != nil {
|
|
t.Fatalf("unable to apply configuration: %s", err)
|
|
}
|
|
select {
|
|
case <-ch:
|
|
t.Fatal("reload happened")
|
|
default:
|
|
}
|
|
|
|
// Apply a configuration for which the reload fails.
|
|
if err := scrapeManager.ApplyConfig(cfg2); err == nil {
|
|
t.Fatalf("expecting error but got none")
|
|
}
|
|
select {
|
|
case <-ch:
|
|
t.Fatal("reload happened")
|
|
default:
|
|
}
|
|
|
|
// Apply a configuration for which the reload succeeds.
|
|
if err := scrapeManager.ApplyConfig(cfg3); err != nil {
|
|
t.Fatalf("unable to apply configuration: %s", err)
|
|
}
|
|
select {
|
|
case <-ch:
|
|
default:
|
|
t.Fatal("reload didn't happen")
|
|
}
|
|
|
|
// Re-applying the same configuration shouldn't trigger a reload.
|
|
if err := scrapeManager.ApplyConfig(cfg3); err != nil {
|
|
t.Fatalf("unable to apply configuration: %s", err)
|
|
}
|
|
select {
|
|
case <-ch:
|
|
t.Fatal("reload happened")
|
|
default:
|
|
}
|
|
}
|
|
|
|
func TestManagerTargetsUpdates(t *testing.T) {
|
|
m := NewManager(nil, nil)
|
|
|
|
ts := make(chan map[string][]*targetgroup.Group)
|
|
go m.Run(ts)
|
|
|
|
tgSent := make(map[string][]*targetgroup.Group)
|
|
for x := 0; x < 10; x++ {
|
|
|
|
tgSent[strconv.Itoa(x)] = []*targetgroup.Group{
|
|
{
|
|
Source: strconv.Itoa(x),
|
|
},
|
|
}
|
|
|
|
select {
|
|
case ts <- tgSent:
|
|
case <-time.After(10 * time.Millisecond):
|
|
t.Error("Scrape manager's channel remained blocked after the set threshold.")
|
|
}
|
|
}
|
|
|
|
m.mtxScrape.Lock()
|
|
tsetActual := m.targetSets
|
|
m.mtxScrape.Unlock()
|
|
|
|
// Make sure all updates have been received.
|
|
testutil.Equals(t, tgSent, tsetActual)
|
|
|
|
select {
|
|
case <-m.triggerReload:
|
|
default:
|
|
t.Error("No scrape loops reload was triggered after targets update.")
|
|
}
|
|
}
|
|
|
|
func TestSetJitter(t *testing.T) {
|
|
getConfig := func(prometheus string) *config.Config {
|
|
cfgText := `
|
|
global:
|
|
external_labels:
|
|
prometheus: '` + prometheus + `'
|
|
`
|
|
|
|
cfg := &config.Config{}
|
|
if err := yaml.UnmarshalStrict([]byte(cfgText), cfg); err != nil {
|
|
t.Fatalf("Unable to load YAML config cfgYaml: %s", err)
|
|
}
|
|
|
|
return cfg
|
|
}
|
|
|
|
scrapeManager := NewManager(nil, nil)
|
|
|
|
// Load the first config.
|
|
cfg1 := getConfig("ha1")
|
|
if err := scrapeManager.setJitterSeed(cfg1.GlobalConfig.ExternalLabels); err != nil {
|
|
t.Error(err)
|
|
}
|
|
jitter1 := scrapeManager.jitterSeed
|
|
|
|
if jitter1 == 0 {
|
|
t.Error("Jitter has to be a hash of uint64")
|
|
}
|
|
|
|
// Load the first config.
|
|
cfg2 := getConfig("ha2")
|
|
if err := scrapeManager.setJitterSeed(cfg2.GlobalConfig.ExternalLabels); err != nil {
|
|
t.Error(err)
|
|
}
|
|
jitter2 := scrapeManager.jitterSeed
|
|
|
|
if jitter1 == jitter2 {
|
|
t.Error("Jitter should not be the same on different set of external labels")
|
|
}
|
|
}
|