mirror of
https://github.com/prometheus/prometheus.git
synced 2024-09-20 07:47:31 -07:00
819 lines
19 KiB
Go
819 lines
19 KiB
Go
// Copyright 2016 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package discovery
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import (
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"context"
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"fmt"
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"reflect"
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"sort"
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"strconv"
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"testing"
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"time"
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"github.com/prometheus/common/model"
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"github.com/prometheus/prometheus/config"
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sd_config "github.com/prometheus/prometheus/discovery/config"
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"github.com/prometheus/prometheus/discovery/targetgroup"
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"gopkg.in/yaml.v2"
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)
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// TestTargetUpdatesOrder checks that the target updates are received in the expected order.
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func TestTargetUpdatesOrder(t *testing.T) {
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// The order by which the updates are send is detirmened by the interval passed to the mock discovery adapter
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// Final targets array is ordered alphabetically by the name of the discoverer.
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// For example discoverer "A" with targets "t2,t3" and discoverer "B" with targets "t1,t2" will result in "t2,t3,t1,t2" after the merge.
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testCases := []struct {
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title string
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updates map[string][]update
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expectedTargets [][]*targetgroup.Group
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}{
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{
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title: "Single TP no updates",
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updates: map[string][]update{
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"tp1": {},
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},
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expectedTargets: nil,
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},
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{
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title: "Multips TPs no updates",
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updates: map[string][]update{
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"tp1": {},
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"tp2": {},
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"tp3": {},
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},
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expectedTargets: nil,
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},
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{
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title: "Single TP empty initials",
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updates: map[string][]update{
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"tp1": {
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{
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targetGroups: []targetgroup.Group{},
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interval: 5,
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},
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},
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},
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expectedTargets: [][]*targetgroup.Group{
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{},
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},
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},
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{
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title: "Multiple TPs empty initials",
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updates: map[string][]update{
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"tp1": {
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{
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targetGroups: []targetgroup.Group{},
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interval: 5,
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},
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},
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"tp2": {
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{
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targetGroups: []targetgroup.Group{},
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interval: 200,
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},
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},
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"tp3": {
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{
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targetGroups: []targetgroup.Group{},
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interval: 100,
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},
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},
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},
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expectedTargets: [][]*targetgroup.Group{
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{},
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{},
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{},
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},
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},
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{
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title: "Single TP initials only",
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updates: map[string][]update{
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"tp1": {
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{
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targetGroups: []targetgroup.Group{
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{{"__instance__": "1"}},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{{"__instance__": "2"}},
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}},
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},
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},
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},
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expectedTargets: [][]*targetgroup.Group{
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{
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{{"__instance__": "1"}},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{{"__instance__": "2"}},
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},
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},
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},
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},
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{
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title: "Multiple TPs initials only",
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updates: map[string][]update{
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"tp1": {
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{
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targetGroups: []targetgroup.Group{
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{{"__instance__": "1"}},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{{"__instance__": "2"}},
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},
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},
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},
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},
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"tp2": {
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{
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targetGroups: []targetgroup.Group{
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{
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Source: "tp2_group1",
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Targets: []model.LabelSet{{"__instance__": "3"}},
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},
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},
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interval: 10,
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},
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},
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},
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expectedTargets: [][]*targetgroup.Group{
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{
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{{"__instance__": "1"}},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{{"__instance__": "2"}},
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},
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}, {
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{{"__instance__": "1"}},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{{"__instance__": "2"}},
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},
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{
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Source: "tp2_group1",
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Targets: []model.LabelSet{{"__instance__": "3"}},
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},
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},
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},
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},
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{
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title: "Single TP initials followed by empty updates",
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updates: map[string][]update{
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"tp1": {
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{
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targetGroups: []targetgroup.Group{
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{{"__instance__": "1"}},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{{"__instance__": "2"}},
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},
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},
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interval: 0,
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},
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{
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targetGroups: []targetgroup.Group{
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{},
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},
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},
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interval: 10,
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},
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},
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},
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expectedTargets: [][]*targetgroup.Group{
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{
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{{"__instance__": "1"}},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{{"__instance__": "2"}},
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},
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},
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{
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{},
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},
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},
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},
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},
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{
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title: "Single TP initials and new groups",
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updates: map[string][]update{
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"tp1": {
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{
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targetGroups: []targetgroup.Group{
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{{"__instance__": "1"}},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{{"__instance__": "2"}},
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},
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},
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interval: 0,
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},
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{
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targetGroups: []targetgroup.Group{
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{{"__instance__": "3"}},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{{"__instance__": "4"}},
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},
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{
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Source: "tp1_group3",
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Targets: []model.LabelSet{{"__instance__": "1"}},
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},
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},
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interval: 10,
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},
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},
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},
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expectedTargets: [][]*targetgroup.Group{
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{
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{{"__instance__": "1"}},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{{"__instance__": "2"}},
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},
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},
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{
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{{"__instance__": "3"}},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{{"__instance__": "4"}},
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},
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{
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Source: "tp1_group3",
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Targets: []model.LabelSet{{"__instance__": "1"}},
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},
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},
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},
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},
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{
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title: "Multiple TPs initials and new groups",
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updates: map[string][]update{
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"tp1": {
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{
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targetGroups: []targetgroup.Group{
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{{"__instance__": "1"}},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{{"__instance__": "2"}},
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},
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},
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interval: 10,
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},
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{
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targetGroups: []targetgroup.Group{
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{
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Source: "tp1_group3",
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Targets: []model.LabelSet{{"__instance__": "3"}},
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},
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{
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Source: "tp1_group4",
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Targets: []model.LabelSet{{"__instance__": "4"}},
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},
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},
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interval: 500,
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},
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},
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"tp2": {
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{
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targetGroups: []targetgroup.Group{
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{
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Source: "tp2_group1",
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Targets: []model.LabelSet{{"__instance__": "5"}},
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},
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{
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Source: "tp2_group2",
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Targets: []model.LabelSet{{"__instance__": "6"}},
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},
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},
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interval: 100,
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},
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{
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targetGroups: []targetgroup.Group{
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{
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Source: "tp2_group3",
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Targets: []model.LabelSet{{"__instance__": "7"}},
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},
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{
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Source: "tp2_group4",
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Targets: []model.LabelSet{{"__instance__": "8"}},
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},
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},
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interval: 10,
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},
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},
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},
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expectedTargets: [][]*targetgroup.Group{
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{
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{{"__instance__": "1"}},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{{"__instance__": "2"}},
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},
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},
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{
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{{"__instance__": "1"}},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{{"__instance__": "2"}},
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},
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{
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Source: "tp2_group1",
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Targets: []model.LabelSet{{"__instance__": "5"}},
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},
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{
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Source: "tp2_group2",
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Targets: []model.LabelSet{{"__instance__": "6"}},
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},
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},
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{
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{{"__instance__": "1"}},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{{"__instance__": "2"}},
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},
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{
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Source: "tp2_group1",
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Targets: []model.LabelSet{{"__instance__": "5"}},
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},
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{
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Source: "tp2_group2",
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Targets: []model.LabelSet{{"__instance__": "6"}},
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},
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{
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Source: "tp2_group3",
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Targets: []model.LabelSet{{"__instance__": "7"}},
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},
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{
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Source: "tp2_group4",
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Targets: []model.LabelSet{{"__instance__": "8"}},
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},
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},
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{
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{{"__instance__": "1"}},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{{"__instance__": "2"}},
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},
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{
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Source: "tp1_group3",
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Targets: []model.LabelSet{{"__instance__": "3"}},
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},
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{
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Source: "tp1_group4",
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Targets: []model.LabelSet{{"__instance__": "4"}},
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},
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{
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Source: "tp2_group1",
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Targets: []model.LabelSet{{"__instance__": "5"}},
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},
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{
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Source: "tp2_group2",
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Targets: []model.LabelSet{{"__instance__": "6"}},
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},
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{
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Source: "tp2_group3",
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Targets: []model.LabelSet{{"__instance__": "7"}},
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},
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{
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Source: "tp2_group4",
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Targets: []model.LabelSet{{"__instance__": "8"}},
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},
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},
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},
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},
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{
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title: "One TP initials arrive after other TP updates.",
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updates: map[string][]update{
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"tp1": {
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{
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targetGroups: []targetgroup.Group{
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{{"__instance__": "1"}},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{{"__instance__": "2"}},
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},
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},
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interval: 10,
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},
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{
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targetGroups: []targetgroup.Group{
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{
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Source: "tp1_group1",
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Targets: []model.LabelSet{{"__instance__": "3"}},
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},
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{
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Source: "tp1_group2",
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Targets: []model.LabelSet{{"__instance__": "4"}},
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},
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},
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interval: 150,
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},
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},
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"tp2": {
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{
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targetGroups: []targetgroup.Group{
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{
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Source: "tp2_group1",
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Targets: []model.LabelSet{{"__instance__": "5"}},
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},
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{
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Source: "tp2_group2",
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Targets: []model.LabelSet{{"__instance__": "6"}},
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},
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|
},
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interval: 200,
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},
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{
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targetGroups: []targetgroup.Group{
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{
|
|
Source: "tp2_group1",
|
|
Targets: []model.LabelSet{{"__instance__": "7"}},
|
|
},
|
|
{
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Source: "tp2_group2",
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|
Targets: []model.LabelSet{{"__instance__": "8"}},
|
|
},
|
|
},
|
|
interval: 100,
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},
|
|
},
|
|
},
|
|
expectedTargets: [][]*targetgroup.Group{
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|
{
|
|
{
|
|
Source: "tp1_group1",
|
|
Targets: []model.LabelSet{{"__instance__": "1"}},
|
|
},
|
|
{
|
|
Source: "tp1_group2",
|
|
Targets: []model.LabelSet{{"__instance__": "2"}},
|
|
},
|
|
},
|
|
{
|
|
{
|
|
Source: "tp1_group1",
|
|
Targets: []model.LabelSet{{"__instance__": "3"}},
|
|
},
|
|
{
|
|
Source: "tp1_group2",
|
|
Targets: []model.LabelSet{{"__instance__": "4"}},
|
|
},
|
|
},
|
|
{
|
|
{
|
|
Source: "tp1_group1",
|
|
Targets: []model.LabelSet{{"__instance__": "3"}},
|
|
},
|
|
{
|
|
Source: "tp1_group2",
|
|
Targets: []model.LabelSet{{"__instance__": "4"}},
|
|
},
|
|
{
|
|
Source: "tp2_group1",
|
|
Targets: []model.LabelSet{{"__instance__": "5"}},
|
|
},
|
|
{
|
|
Source: "tp2_group2",
|
|
Targets: []model.LabelSet{{"__instance__": "6"}},
|
|
},
|
|
},
|
|
{
|
|
{
|
|
Source: "tp1_group1",
|
|
Targets: []model.LabelSet{{"__instance__": "3"}},
|
|
},
|
|
{
|
|
Source: "tp1_group2",
|
|
Targets: []model.LabelSet{{"__instance__": "4"}},
|
|
},
|
|
{
|
|
Source: "tp2_group1",
|
|
Targets: []model.LabelSet{{"__instance__": "7"}},
|
|
},
|
|
{
|
|
Source: "tp2_group2",
|
|
Targets: []model.LabelSet{{"__instance__": "8"}},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
|
|
{
|
|
title: "Single TP empty update in between",
|
|
updates: map[string][]update{
|
|
"tp1": {
|
|
{
|
|
targetGroups: []targetgroup.Group{
|
|
{
|
|
Source: "tp1_group1",
|
|
Targets: []model.LabelSet{{"__instance__": "1"}},
|
|
},
|
|
{
|
|
Source: "tp1_group2",
|
|
Targets: []model.LabelSet{{"__instance__": "2"}},
|
|
},
|
|
},
|
|
interval: 30,
|
|
},
|
|
{
|
|
targetGroups: []targetgroup.Group{
|
|
{
|
|
Source: "tp1_group1",
|
|
Targets: []model.LabelSet{},
|
|
},
|
|
{
|
|
Source: "tp1_group2",
|
|
Targets: []model.LabelSet{},
|
|
},
|
|
},
|
|
interval: 10,
|
|
},
|
|
{
|
|
targetGroups: []targetgroup.Group{
|
|
{
|
|
Source: "tp1_group1",
|
|
Targets: []model.LabelSet{{"__instance__": "3"}},
|
|
},
|
|
{
|
|
Source: "tp1_group2",
|
|
Targets: []model.LabelSet{{"__instance__": "4"}},
|
|
},
|
|
},
|
|
interval: 300,
|
|
},
|
|
},
|
|
},
|
|
expectedTargets: [][]*targetgroup.Group{
|
|
{
|
|
{
|
|
Source: "tp1_group1",
|
|
Targets: []model.LabelSet{{"__instance__": "1"}},
|
|
},
|
|
{
|
|
Source: "tp1_group2",
|
|
Targets: []model.LabelSet{{"__instance__": "2"}},
|
|
},
|
|
},
|
|
{
|
|
{
|
|
Source: "tp1_group1",
|
|
Targets: []model.LabelSet{},
|
|
},
|
|
{
|
|
Source: "tp1_group2",
|
|
Targets: []model.LabelSet{},
|
|
},
|
|
},
|
|
{
|
|
{
|
|
Source: "tp1_group1",
|
|
Targets: []model.LabelSet{{"__instance__": "3"}},
|
|
},
|
|
{
|
|
Source: "tp1_group2",
|
|
Targets: []model.LabelSet{{"__instance__": "4"}},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
|
|
for testIndex, testCase := range testCases {
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
defer cancel()
|
|
discoveryManager := NewManager(ctx, nil)
|
|
|
|
var totalUpdatesCount int
|
|
|
|
provUpdates := make(chan []*targetgroup.Group)
|
|
for _, up := range testCase.updates {
|
|
go newMockDiscoveryProvider(up).Run(ctx, provUpdates)
|
|
if len(up) > 0 {
|
|
totalUpdatesCount = totalUpdatesCount + len(up)
|
|
}
|
|
}
|
|
|
|
Loop:
|
|
for x := 0; x < totalUpdatesCount; x++ {
|
|
select {
|
|
case <-time.After(10 * time.Second):
|
|
t.Errorf("%v. %q: no update arrived within the timeout limit", x, testCase.title)
|
|
break Loop
|
|
case tgs := <-provUpdates:
|
|
discoveryManager.updateGroup(poolKey{setName: strconv.Itoa(testIndex), provider: testCase.title}, tgs)
|
|
for _, received := range discoveryManager.allGroups() {
|
|
// Need to sort by the Groups source as the received order is not guaranteed.
|
|
sort.Sort(byGroupSource(received))
|
|
if !reflect.DeepEqual(received, testCase.expectedTargets[x]) {
|
|
var receivedFormated string
|
|
for _, receivedTargets := range received {
|
|
receivedFormated = receivedFormated + receivedTargets.Source + ":" + fmt.Sprint(receivedTargets.Targets)
|
|
}
|
|
var expectedFormated string
|
|
for _, expectedTargets := range testCase.expectedTargets[x] {
|
|
expectedFormated = expectedFormated + expectedTargets.Source + ":" + fmt.Sprint(expectedTargets.Targets)
|
|
}
|
|
|
|
t.Errorf("%v. %v: \ntargets mismatch \nreceived: %v \nexpected: %v",
|
|
x, testCase.title,
|
|
receivedFormated,
|
|
expectedFormated)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestTargetSetRecreatesTargetGroupsEveryRun(t *testing.T) {
|
|
verifyPresence := func(tSets map[poolKey]map[string]*targetgroup.Group, poolKey poolKey, label string, present bool) {
|
|
if _, ok := tSets[poolKey]; !ok {
|
|
t.Fatalf("'%s' should be present in Pool keys: %v", poolKey, tSets)
|
|
return
|
|
}
|
|
|
|
match := false
|
|
var mergedTargets string
|
|
for _, targetGroup := range tSets[poolKey] {
|
|
|
|
for _, l := range targetGroup.Targets {
|
|
mergedTargets = mergedTargets + " " + l.String()
|
|
if l.String() == label {
|
|
match = true
|
|
}
|
|
}
|
|
|
|
}
|
|
if match != present {
|
|
msg := ""
|
|
if !present {
|
|
msg = "not"
|
|
}
|
|
t.Fatalf("'%s' should %s be present in Targets labels: %v", label, msg, mergedTargets)
|
|
}
|
|
}
|
|
|
|
cfg := &config.Config{}
|
|
|
|
sOne := `
|
|
scrape_configs:
|
|
- job_name: 'prometheus'
|
|
static_configs:
|
|
- targets: ["foo:9090"]
|
|
- targets: ["bar:9090"]
|
|
`
|
|
if err := yaml.Unmarshal([]byte(sOne), cfg); err != nil {
|
|
t.Fatalf("Unable to load YAML config sOne: %s", err)
|
|
}
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
defer cancel()
|
|
discoveryManager := NewManager(ctx, nil)
|
|
go discoveryManager.Run()
|
|
|
|
c := make(map[string]sd_config.ServiceDiscoveryConfig)
|
|
for _, v := range cfg.ScrapeConfigs {
|
|
c[v.JobName] = v.ServiceDiscoveryConfig
|
|
}
|
|
discoveryManager.ApplyConfig(c)
|
|
|
|
_ = <-discoveryManager.SyncCh()
|
|
verifyPresence(discoveryManager.targets, poolKey{setName: "prometheus", provider: "static/0"}, "{__address__=\"foo:9090\"}", true)
|
|
verifyPresence(discoveryManager.targets, poolKey{setName: "prometheus", provider: "static/0"}, "{__address__=\"bar:9090\"}", true)
|
|
|
|
sTwo := `
|
|
scrape_configs:
|
|
- job_name: 'prometheus'
|
|
static_configs:
|
|
- targets: ["foo:9090"]
|
|
`
|
|
if err := yaml.Unmarshal([]byte(sTwo), cfg); err != nil {
|
|
t.Fatalf("Unable to load YAML config sOne: %s", err)
|
|
}
|
|
c = make(map[string]sd_config.ServiceDiscoveryConfig)
|
|
for _, v := range cfg.ScrapeConfigs {
|
|
c[v.JobName] = v.ServiceDiscoveryConfig
|
|
}
|
|
discoveryManager.ApplyConfig(c)
|
|
|
|
_ = <-discoveryManager.SyncCh()
|
|
verifyPresence(discoveryManager.targets, poolKey{setName: "prometheus", provider: "static/0"}, "{__address__=\"foo:9090\"}", true)
|
|
verifyPresence(discoveryManager.targets, poolKey{setName: "prometheus", provider: "static/0"}, "{__address__=\"bar:9090\"}", false)
|
|
}
|
|
|
|
type update struct {
|
|
targetGroups []targetgroup.Group
|
|
interval time.Duration
|
|
}
|
|
|
|
type mockdiscoveryProvider struct {
|
|
updates []update
|
|
up chan<- []*targetgroup.Group
|
|
}
|
|
|
|
func newMockDiscoveryProvider(updates []update) mockdiscoveryProvider {
|
|
|
|
tp := mockdiscoveryProvider{
|
|
updates: updates,
|
|
}
|
|
return tp
|
|
}
|
|
|
|
func (tp mockdiscoveryProvider) Run(ctx context.Context, up chan<- []*targetgroup.Group) {
|
|
tp.up = up
|
|
tp.sendUpdates()
|
|
}
|
|
|
|
func (tp mockdiscoveryProvider) sendUpdates() {
|
|
for _, update := range tp.updates {
|
|
|
|
time.Sleep(update.interval * time.Millisecond)
|
|
|
|
tgs := make([]*targetgroup.Group, len(update.targetGroups))
|
|
for i := range update.targetGroups {
|
|
tgs[i] = &update.targetGroups[i]
|
|
}
|
|
tp.up <- tgs
|
|
}
|
|
}
|
|
|
|
// byGroupSource implements sort.Interface so we can sort by the Source field.
|
|
type byGroupSource []*targetgroup.Group
|
|
|
|
func (a byGroupSource) Len() int { return len(a) }
|
|
func (a byGroupSource) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
|
|
func (a byGroupSource) Less(i, j int) bool { return a[i].Source < a[j].Source }
|