prometheus/storage/remote/write_test.go

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// 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 remote
import (
"io/ioutil"
"net/url"
"os"
"testing"
"time"
"github.com/prometheus/client_golang/prometheus"
common_config "github.com/prometheus/common/config"
"github.com/prometheus/common/model"
"github.com/stretchr/testify/require"
"github.com/prometheus/prometheus/config"
"github.com/prometheus/prometheus/pkg/labels"
"github.com/prometheus/prometheus/pkg/relabel"
)
var cfg = config.RemoteWriteConfig{
Name: "dev",
URL: &common_config.URL{
URL: &url.URL{
Scheme: "http",
Host: "localhost",
},
},
QueueConfig: config.DefaultQueueConfig,
}
func TestNoDuplicateWriteConfigs(t *testing.T) {
dir, err := ioutil.TempDir("", "TestNoDuplicateWriteConfigs")
require.NoError(t, err)
defer func() {
require.NoError(t, os.RemoveAll(dir))
}()
cfg1 := config.RemoteWriteConfig{
Name: "write-1",
URL: &common_config.URL{
URL: &url.URL{
Scheme: "http",
Host: "localhost",
},
},
QueueConfig: config.DefaultQueueConfig,
}
cfg2 := config.RemoteWriteConfig{
Name: "write-2",
URL: &common_config.URL{
URL: &url.URL{
Scheme: "http",
Host: "localhost",
},
},
QueueConfig: config.DefaultQueueConfig,
}
cfg3 := config.RemoteWriteConfig{
URL: &common_config.URL{
URL: &url.URL{
Scheme: "http",
Host: "localhost",
},
},
QueueConfig: config.DefaultQueueConfig,
}
type testcase struct {
cfgs []*config.RemoteWriteConfig
err bool
}
cases := []testcase{
{ // Two duplicates, we should get an error.
cfgs: []*config.RemoteWriteConfig{
&cfg1,
&cfg1,
},
err: true,
},
{ // Duplicates but with different names, we should not get an error.
cfgs: []*config.RemoteWriteConfig{
&cfg1,
&cfg2,
},
err: false,
},
{ // Duplicates but one with no name, we should not get an error.
cfgs: []*config.RemoteWriteConfig{
&cfg1,
&cfg3,
},
err: false,
},
{ // Duplicates both with no name, we should get an error.
cfgs: []*config.RemoteWriteConfig{
&cfg3,
&cfg3,
},
err: true,
},
}
for _, tc := range cases {
s := NewWriteStorage(nil, nil, dir, time.Millisecond, nil)
conf := &config.Config{
GlobalConfig: config.DefaultGlobalConfig,
RemoteWriteConfigs: tc.cfgs,
}
err := s.ApplyConfig(conf)
gotError := err != nil
require.Equal(t, tc.err, gotError)
err = s.Close()
require.NoError(t, err)
}
}
func TestRestartOnNameChange(t *testing.T) {
dir, err := ioutil.TempDir("", "TestRestartOnNameChange")
require.NoError(t, err)
defer func() {
require.NoError(t, os.RemoveAll(dir))
}()
hash, err := toHash(cfg)
require.NoError(t, err)
s := NewWriteStorage(nil, nil, dir, time.Millisecond, nil)
conf := &config.Config{
GlobalConfig: config.DefaultGlobalConfig,
RemoteWriteConfigs: []*config.RemoteWriteConfig{
&cfg,
},
}
require.NoError(t, s.ApplyConfig(conf))
require.Equal(t, s.queues[hash].client().Name(), cfg.Name)
// Change the queues name, ensure the queue has been restarted.
conf.RemoteWriteConfigs[0].Name = "dev-2"
require.NoError(t, s.ApplyConfig(conf))
hash, err = toHash(cfg)
require.NoError(t, err)
require.Equal(t, s.queues[hash].client().Name(), conf.RemoteWriteConfigs[0].Name)
err = s.Close()
require.NoError(t, err)
}
func TestUpdateWithRegisterer(t *testing.T) {
dir, err := ioutil.TempDir("", "TestRestartWithRegisterer")
require.NoError(t, err)
defer func() {
require.NoError(t, os.RemoveAll(dir))
}()
s := NewWriteStorage(nil, prometheus.NewRegistry(), dir, time.Millisecond, nil)
c1 := &config.RemoteWriteConfig{
Name: "named",
URL: &common_config.URL{
URL: &url.URL{
Scheme: "http",
Host: "localhost",
},
},
QueueConfig: config.DefaultQueueConfig,
}
c2 := &config.RemoteWriteConfig{
URL: &common_config.URL{
URL: &url.URL{
Scheme: "http",
Host: "localhost",
},
},
QueueConfig: config.DefaultQueueConfig,
}
conf := &config.Config{
GlobalConfig: config.DefaultGlobalConfig,
RemoteWriteConfigs: []*config.RemoteWriteConfig{c1, c2},
}
require.NoError(t, s.ApplyConfig(conf))
c1.QueueConfig.MaxShards = 10
c2.QueueConfig.MaxShards = 10
require.NoError(t, s.ApplyConfig(conf))
for _, queue := range s.queues {
require.Equal(t, 10, queue.cfg.MaxShards)
}
err = s.Close()
require.NoError(t, err)
}
func TestWriteStorageLifecycle(t *testing.T) {
dir, err := ioutil.TempDir("", "TestWriteStorageLifecycle")
require.NoError(t, err)
defer func() {
require.NoError(t, os.RemoveAll(dir))
}()
s := NewWriteStorage(nil, nil, dir, defaultFlushDeadline, nil)
conf := &config.Config{
GlobalConfig: config.DefaultGlobalConfig,
RemoteWriteConfigs: []*config.RemoteWriteConfig{
&config.DefaultRemoteWriteConfig,
},
}
s.ApplyConfig(conf)
require.Equal(t, 1, len(s.queues))
err = s.Close()
require.NoError(t, err)
}
func TestUpdateExternalLabels(t *testing.T) {
dir, err := ioutil.TempDir("", "TestUpdateExternalLabels")
require.NoError(t, err)
defer func() {
require.NoError(t, os.RemoveAll(dir))
}()
s := NewWriteStorage(nil, prometheus.NewRegistry(), dir, time.Second, nil)
externalLabels := labels.FromStrings("external", "true")
conf := &config.Config{
GlobalConfig: config.GlobalConfig{},
RemoteWriteConfigs: []*config.RemoteWriteConfig{
&cfg,
},
}
hash, err := toHash(conf.RemoteWriteConfigs[0])
require.NoError(t, err)
s.ApplyConfig(conf)
require.Equal(t, 1, len(s.queues))
require.Equal(t, labels.Labels(nil), s.queues[hash].externalLabels)
conf.GlobalConfig.ExternalLabels = externalLabels
hash, err = toHash(conf.RemoteWriteConfigs[0])
require.NoError(t, err)
s.ApplyConfig(conf)
require.Equal(t, 1, len(s.queues))
require.Equal(t, externalLabels, s.queues[hash].externalLabels)
err = s.Close()
require.NoError(t, err)
}
func TestWriteStorageApplyConfigsIdempotent(t *testing.T) {
dir, err := ioutil.TempDir("", "TestWriteStorageApplyConfigsIdempotent")
require.NoError(t, err)
defer func() {
require.NoError(t, os.RemoveAll(dir))
}()
s := NewWriteStorage(nil, nil, dir, defaultFlushDeadline, nil)
conf := &config.Config{
GlobalConfig: config.GlobalConfig{},
RemoteWriteConfigs: []*config.RemoteWriteConfig{
&config.DefaultRemoteWriteConfig,
},
}
// We need to set URL's so that metric creation doesn't panic.
conf.RemoteWriteConfigs[0].URL = &common_config.URL{
URL: &url.URL{
Host: "http://test-storage.com",
},
}
hash, err := toHash(conf.RemoteWriteConfigs[0])
require.NoError(t, err)
s.ApplyConfig(conf)
require.Equal(t, 1, len(s.queues))
s.ApplyConfig(conf)
require.Equal(t, 1, len(s.queues))
_, hashExists := s.queues[hash]
require.True(t, hashExists, "Queue pointer should have remained the same")
err = s.Close()
require.NoError(t, err)
}
func TestWriteStorageApplyConfigsPartialUpdate(t *testing.T) {
dir, err := ioutil.TempDir("", "TestWriteStorageApplyConfigsPartialUpdate")
require.NoError(t, err)
defer func() {
require.NoError(t, os.RemoveAll(dir))
}()
s := NewWriteStorage(nil, nil, dir, defaultFlushDeadline, nil)
c0 := &config.RemoteWriteConfig{
RemoteTimeout: model.Duration(10 * time.Second),
QueueConfig: config.DefaultQueueConfig,
WriteRelabelConfigs: []*relabel.Config{
{
Regex: relabel.MustNewRegexp(".+"),
},
},
}
c1 := &config.RemoteWriteConfig{
RemoteTimeout: model.Duration(20 * time.Second),
QueueConfig: config.DefaultQueueConfig,
HTTPClientConfig: common_config.HTTPClientConfig{
BearerToken: "foo",
},
}
c2 := &config.RemoteWriteConfig{
RemoteTimeout: model.Duration(30 * time.Second),
QueueConfig: config.DefaultQueueConfig,
}
conf := &config.Config{
GlobalConfig: config.GlobalConfig{},
RemoteWriteConfigs: []*config.RemoteWriteConfig{c0, c1, c2},
}
// We need to set URL's so that metric creation doesn't panic.
for i := range conf.RemoteWriteConfigs {
conf.RemoteWriteConfigs[i].URL = &common_config.URL{
URL: &url.URL{
Host: "http://test-storage.com",
},
}
}
require.NoError(t, s.ApplyConfig(conf))
require.Equal(t, 3, len(s.queues))
hashes := make([]string, len(conf.RemoteWriteConfigs))
queues := make([]*QueueManager, len(conf.RemoteWriteConfigs))
storeHashes := func() {
for i := range conf.RemoteWriteConfigs {
hash, err := toHash(conf.RemoteWriteConfigs[i])
require.NoError(t, err)
hashes[i] = hash
queues[i] = s.queues[hash]
}
}
storeHashes()
// Update c0 and c2.
c0.WriteRelabelConfigs[0] = &relabel.Config{Regex: relabel.MustNewRegexp("foo")}
c2.RemoteTimeout = model.Duration(50 * time.Second)
conf = &config.Config{
GlobalConfig: config.GlobalConfig{},
RemoteWriteConfigs: []*config.RemoteWriteConfig{c0, c1, c2},
}
require.NoError(t, s.ApplyConfig(conf))
require.Equal(t, 3, len(s.queues))
_, hashExists := s.queues[hashes[0]]
require.False(t, hashExists, "The queue for the first remote write configuration should have been restarted because the relabel configuration has changed.")
q, hashExists := s.queues[hashes[1]]
require.True(t, hashExists, "Hash of unchanged queue should have remained the same")
require.Equal(t, q, queues[1], "Pointer of unchanged queue should have remained the same")
_, hashExists = s.queues[hashes[2]]
require.False(t, hashExists, "The queue for the third remote write configuration should have been restarted because the timeout has changed.")
storeHashes()
secondClient := s.queues[hashes[1]].client()
// Update c1.
c1.HTTPClientConfig.BearerToken = "bar"
err = s.ApplyConfig(conf)
require.NoError(t, err)
require.Equal(t, 3, len(s.queues))
_, hashExists = s.queues[hashes[0]]
require.True(t, hashExists, "Pointer of unchanged queue should have remained the same")
q, hashExists = s.queues[hashes[1]]
require.True(t, hashExists, "Hash of queue with secret change should have remained the same")
require.NotEqual(t, secondClient, q.client(), "Pointer of a client with a secret change should not be the same")
_, hashExists = s.queues[hashes[2]]
require.True(t, hashExists, "Pointer of unchanged queue should have remained the same")
storeHashes()
// Delete c0.
conf = &config.Config{
GlobalConfig: config.GlobalConfig{},
RemoteWriteConfigs: []*config.RemoteWriteConfig{c1, c2},
}
s.ApplyConfig(conf)
require.Equal(t, 2, len(s.queues))
_, hashExists = s.queues[hashes[0]]
require.False(t, hashExists, "If a config is removed, the queue should be stopped and recreated.")
_, hashExists = s.queues[hashes[1]]
require.True(t, hashExists, "Pointer of unchanged queue should have remained the same")
_, hashExists = s.queues[hashes[2]]
require.True(t, hashExists, "Pointer of unchanged queue should have remained the same")
err = s.Close()
require.NoError(t, err)
}