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prometheus/retrieval/targetmanager_test.go
beorn7 fd5108b038 Fix a targetmanager test
2016-02-22 16:43:48 +01:00

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// 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 retrieval
import (
"net/url"
"reflect"
"testing"
"time"
"github.com/prometheus/common/model"
"github.com/prometheus/prometheus/config"
)
func TestPrefixedTargetProvider(t *testing.T) {
targetGroups := []*config.TargetGroup{
{
Targets: []model.LabelSet{
{model.AddressLabel: "test-1:1234"},
},
}, {
Targets: []model.LabelSet{
{model.AddressLabel: "test-1:1235"},
},
},
}
tp := &prefixedTargetProvider{
job: "job-x",
mechanism: "static",
idx: 123,
TargetProvider: NewStaticProvider(targetGroups),
}
expSources := []string{
"job-x:static:123:0",
"job-x:static:123:1",
}
if !reflect.DeepEqual(tp.Sources(), expSources) {
t.Fatalf("expected sources %v, got %v", expSources, tp.Sources())
}
ch := make(chan config.TargetGroup)
done := make(chan struct{})
defer close(done)
go tp.Run(ch, done)
expGroup1 := *targetGroups[0]
expGroup2 := *targetGroups[1]
expGroup1.Source = "job-x:static:123:0"
expGroup2.Source = "job-x:static:123:1"
// The static target provider sends on the channel once per target group.
if tg := <-ch; !reflect.DeepEqual(tg, expGroup1) {
t.Fatalf("expected target group %v, got %v", expGroup1, tg)
}
if tg := <-ch; !reflect.DeepEqual(tg, expGroup2) {
t.Fatalf("expected target group %v, got %v", expGroup2, tg)
}
}
func TestTargetManagerChan(t *testing.T) {
testJob1 := &config.ScrapeConfig{
JobName: "test_job1",
ScrapeInterval: model.Duration(1 * time.Minute),
TargetGroups: []*config.TargetGroup{{
Targets: []model.LabelSet{
{model.AddressLabel: "example.org:80"},
{model.AddressLabel: "example.com:80"},
},
}},
}
prov1 := &fakeTargetProvider{
sources: []string{"src1", "src2"},
update: make(chan *config.TargetGroup),
}
targetManager := &TargetManager{
sampleAppender: nopAppender{},
providers: map[*config.ScrapeConfig][]TargetProvider{
testJob1: {prov1},
},
targets: make(map[string][]*Target),
}
go targetManager.Run()
defer targetManager.Stop()
sequence := []struct {
tgroup *config.TargetGroup
expected map[string][]model.LabelSet
}{
{
tgroup: &config.TargetGroup{
Source: "src1",
Targets: []model.LabelSet{
{model.AddressLabel: "test-1:1234"},
{model.AddressLabel: "test-2:1234", "label": "set"},
{model.AddressLabel: "test-3:1234"},
},
},
expected: map[string][]model.LabelSet{
"src1": {
{model.JobLabel: "test_job1", model.InstanceLabel: "test-1:1234"},
{model.JobLabel: "test_job1", model.InstanceLabel: "test-2:1234", "label": "set"},
{model.JobLabel: "test_job1", model.InstanceLabel: "test-3:1234"},
},
},
}, {
tgroup: &config.TargetGroup{
Source: "src2",
Targets: []model.LabelSet{
{model.AddressLabel: "test-1:1235"},
{model.AddressLabel: "test-2:1235"},
{model.AddressLabel: "test-3:1235"},
},
Labels: model.LabelSet{"group": "label"},
},
expected: map[string][]model.LabelSet{
"src1": {
{model.JobLabel: "test_job1", model.InstanceLabel: "test-1:1234"},
{model.JobLabel: "test_job1", model.InstanceLabel: "test-2:1234", "label": "set"},
{model.JobLabel: "test_job1", model.InstanceLabel: "test-3:1234"},
},
"src2": {
{model.JobLabel: "test_job1", model.InstanceLabel: "test-1:1235", "group": "label"},
{model.JobLabel: "test_job1", model.InstanceLabel: "test-2:1235", "group": "label"},
{model.JobLabel: "test_job1", model.InstanceLabel: "test-3:1235", "group": "label"},
},
},
}, {
tgroup: &config.TargetGroup{
Source: "src2",
Targets: []model.LabelSet{},
},
expected: map[string][]model.LabelSet{
"src1": {
{model.JobLabel: "test_job1", model.InstanceLabel: "test-1:1234"},
{model.JobLabel: "test_job1", model.InstanceLabel: "test-2:1234", "label": "set"},
{model.JobLabel: "test_job1", model.InstanceLabel: "test-3:1234"},
},
},
}, {
tgroup: &config.TargetGroup{
Source: "src1",
Targets: []model.LabelSet{
{model.AddressLabel: "test-1:1234", "added": "label"},
{model.AddressLabel: "test-3:1234"},
{model.AddressLabel: "test-4:1234", "fancy": "label"},
},
},
expected: map[string][]model.LabelSet{
"src1": {
{model.JobLabel: "test_job1", model.InstanceLabel: "test-1:1234", "added": "label"},
{model.JobLabel: "test_job1", model.InstanceLabel: "test-3:1234"},
{model.JobLabel: "test_job1", model.InstanceLabel: "test-4:1234", "fancy": "label"},
},
},
},
}
for i, step := range sequence {
prov1.update <- step.tgroup
time.Sleep(20 * time.Millisecond)
if len(targetManager.targets) != len(step.expected) {
t.Fatalf("step %d: sources mismatch %v, %v", i, targetManager.targets, step.expected)
}
for source, actTargets := range targetManager.targets {
expTargets, ok := step.expected[source]
if !ok {
t.Fatalf("step %d: unexpected source %q: %v", i, source, actTargets)
}
for _, expt := range expTargets {
found := false
for _, actt := range actTargets {
if reflect.DeepEqual(expt, actt.Labels()) {
found = true
break
}
}
if !found {
t.Errorf("step %d: expected target %v not found in actual targets", i, expt)
}
}
}
}
}
func TestTargetManagerConfigUpdate(t *testing.T) {
testJob1 := &config.ScrapeConfig{
JobName: "test_job1",
ScrapeInterval: model.Duration(1 * time.Minute),
Params: url.Values{
"testParam": []string{"paramValue", "secondValue"},
},
TargetGroups: []*config.TargetGroup{{
Targets: []model.LabelSet{
{model.AddressLabel: "example.org:80"},
{model.AddressLabel: "example.com"},
},
}},
RelabelConfigs: []*config.RelabelConfig{
{
// Copy out the URL parameter.
SourceLabels: model.LabelNames{"__param_testParam"},
Regex: config.MustNewRegexp("(.*)"),
TargetLabel: "testParam",
Replacement: "$1",
Action: config.RelabelReplace,
},
{
// The port number is added after relabeling, so
// this relabel rule should have no effect.
SourceLabels: model.LabelNames{model.AddressLabel},
Regex: config.MustNewRegexp("example.com:80"),
Action: config.RelabelDrop,
},
},
}
testJob2 := &config.ScrapeConfig{
JobName: "test_job2",
ScrapeInterval: model.Duration(1 * time.Minute),
TargetGroups: []*config.TargetGroup{
{
Targets: []model.LabelSet{
{model.AddressLabel: "example.org:8080"},
{model.AddressLabel: "example.com:8081"},
},
Labels: model.LabelSet{
"foo": "bar",
"boom": "box",
},
},
{
Targets: []model.LabelSet{
{model.AddressLabel: "test.com:1234"},
},
},
{
Targets: []model.LabelSet{
{model.AddressLabel: "test.com:1235"},
},
Labels: model.LabelSet{"instance": "fixed"},
},
},
RelabelConfigs: []*config.RelabelConfig{
{
SourceLabels: model.LabelNames{model.AddressLabel},
Regex: config.MustNewRegexp(`test\.(.*?):(.*)`),
Replacement: "foo.${1}:${2}",
TargetLabel: model.AddressLabel,
Action: config.RelabelReplace,
},
{
// Add a new label for example.* targets.
SourceLabels: model.LabelNames{model.AddressLabel, "boom", "foo"},
Regex: config.MustNewRegexp("example.*?-b([a-z-]+)r"),
TargetLabel: "new",
Replacement: "$1",
Separator: "-",
Action: config.RelabelReplace,
},
{
// Drop an existing label.
SourceLabels: model.LabelNames{"boom"},
Regex: config.MustNewRegexp(".*"),
TargetLabel: "boom",
Replacement: "",
Action: config.RelabelReplace,
},
},
}
// Test that targets without host:port addresses are dropped.
testJob3 := &config.ScrapeConfig{
JobName: "test_job1",
ScrapeInterval: model.Duration(1 * time.Minute),
TargetGroups: []*config.TargetGroup{{
Targets: []model.LabelSet{
{model.AddressLabel: "example.net:80"},
},
}},
RelabelConfigs: []*config.RelabelConfig{
{
SourceLabels: model.LabelNames{model.AddressLabel},
Regex: config.MustNewRegexp("(.*)"),
TargetLabel: "__address__",
Replacement: "http://$1",
Action: config.RelabelReplace,
},
},
}
sequence := []struct {
scrapeConfigs []*config.ScrapeConfig
expected map[string][]model.LabelSet
}{
{
scrapeConfigs: []*config.ScrapeConfig{testJob1},
expected: map[string][]model.LabelSet{
"test_job1:static:0:0": {
{
model.JobLabel: "test_job1",
"testParam": "paramValue",
model.SchemeLabel: "",
model.MetricsPathLabel: "",
model.AddressLabel: "example.org:80",
model.ParamLabelPrefix + "testParam": "paramValue",
},
{
model.JobLabel: "test_job1",
"testParam": "paramValue",
model.SchemeLabel: "",
model.MetricsPathLabel: "",
model.AddressLabel: "example.com:80",
model.ParamLabelPrefix + "testParam": "paramValue"},
},
},
}, {
scrapeConfigs: []*config.ScrapeConfig{testJob1},
expected: map[string][]model.LabelSet{
"test_job1:static:0:0": {
{
model.JobLabel: "test_job1",
"testParam": "paramValue",
model.SchemeLabel: "",
model.MetricsPathLabel: "",
model.AddressLabel: "example.org:80",
model.ParamLabelPrefix + "testParam": "paramValue",
},
{
model.JobLabel: "test_job1",
"testParam": "paramValue",
model.SchemeLabel: "",
model.MetricsPathLabel: "",
model.AddressLabel: "example.com:80",
model.ParamLabelPrefix + "testParam": "paramValue",
},
},
},
}, {
scrapeConfigs: []*config.ScrapeConfig{testJob1, testJob2},
expected: map[string][]model.LabelSet{
"test_job1:static:0:0": {
{
model.JobLabel: "test_job1",
"testParam": "paramValue",
model.SchemeLabel: "",
model.MetricsPathLabel: "",
model.AddressLabel: "example.org:80",
model.ParamLabelPrefix + "testParam": "paramValue",
},
{
model.JobLabel: "test_job1",
"testParam": "paramValue",
model.SchemeLabel: "",
model.MetricsPathLabel: "",
model.AddressLabel: "example.com:80",
model.ParamLabelPrefix + "testParam": "paramValue",
},
},
"test_job2:static:0:0": {
{
model.JobLabel: "test_job2",
"foo": "bar",
"new": "ox-ba",
model.SchemeLabel: "",
model.MetricsPathLabel: "",
model.AddressLabel: "example.org:8080",
},
{
model.JobLabel: "test_job2",
"foo": "bar",
"new": "ox-ba",
model.SchemeLabel: "",
model.MetricsPathLabel: "",
model.AddressLabel: "example.com:8081",
},
},
"test_job2:static:0:1": {
{
model.JobLabel: "test_job2",
model.SchemeLabel: "",
model.MetricsPathLabel: "",
model.AddressLabel: "foo.com:1234",
},
},
"test_job2:static:0:2": {
{
model.JobLabel: "test_job2",
model.InstanceLabel: "fixed",
model.SchemeLabel: "",
model.MetricsPathLabel: "",
model.AddressLabel: "foo.com:1235",
},
},
},
}, {
scrapeConfigs: []*config.ScrapeConfig{},
expected: map[string][]model.LabelSet{},
}, {
scrapeConfigs: []*config.ScrapeConfig{testJob2},
expected: map[string][]model.LabelSet{
"test_job2:static:0:0": {
{
model.JobLabel: "test_job2",
"foo": "bar",
"new": "ox-ba",
model.SchemeLabel: "",
model.MetricsPathLabel: "",
model.AddressLabel: "example.org:8080"},
{
model.JobLabel: "test_job2",
"foo": "bar",
"new": "ox-ba",
model.SchemeLabel: "",
model.MetricsPathLabel: "",
model.AddressLabel: "example.com:8081",
},
},
"test_job2:static:0:1": {
{
model.JobLabel: "test_job2",
model.SchemeLabel: "",
model.MetricsPathLabel: "",
model.AddressLabel: "foo.com:1234",
},
},
"test_job2:static:0:2": {
{
model.JobLabel: "test_job2",
model.InstanceLabel: "fixed",
model.SchemeLabel: "",
model.MetricsPathLabel: "",
model.AddressLabel: "foo.com:1235",
},
},
},
}, {
scrapeConfigs: []*config.ScrapeConfig{testJob3},
expected: map[string][]model.LabelSet{},
},
}
conf := &config.Config{}
*conf = config.DefaultConfig
targetManager := NewTargetManager(nopAppender{})
targetManager.ApplyConfig(conf)
targetManager.Run()
defer targetManager.Stop()
for i, step := range sequence {
conf.ScrapeConfigs = step.scrapeConfigs
targetManager.ApplyConfig(conf)
time.Sleep(50 * time.Millisecond)
if len(targetManager.targets) != len(step.expected) {
t.Fatalf("step %d: sources mismatch: expected %v, got %v", i, step.expected, targetManager.targets)
}
for source, actTargets := range targetManager.targets {
expTargets, ok := step.expected[source]
if !ok {
t.Fatalf("step %d: unexpected source %q: %v", i, source, actTargets)
}
for _, expt := range expTargets {
found := false
for _, actt := range actTargets {
if reflect.DeepEqual(expt, actt.labels) {
found = true
break
}
}
if !found {
t.Errorf("step %d: expected target %v for %q not found in actual targets", i, expt, source)
}
}
}
}
}
func TestHandleUpdatesReturnsWhenUpdateChanIsClosed(t *testing.T) {
tm := NewTargetManager(nopAppender{})
ch := make(chan targetGroupUpdate)
close(ch)
tm.handleUpdates(ch, make(chan struct{}))
}
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