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"
"os"
"testing"
"github.com/prometheus/prometheus/config"
"github.com/prometheus/prometheus/pkg/labels"
"github.com/prometheus/prometheus/util/testutil"
)
func TestWriteStorageLifecycle(t *testing.T) {
dir, err := ioutil.TempDir("", "TestWriteStorageLifecycle")
testutil.Ok(t, err)
defer os.RemoveAll(dir)
s := NewWriteStorage(nil, dir, defaultFlushDeadline)
conf := &config.Config{
GlobalConfig: config.DefaultGlobalConfig,
RemoteWriteConfigs: []*config.RemoteWriteConfig{
&config.DefaultRemoteWriteConfig,
},
}
s.ApplyConfig(conf)
testutil.Equals(t, 1, len(s.queues))
err = s.Close()
testutil.Ok(t, err)
}
func TestUpdateExternalLabels(t *testing.T) {
dir, err := ioutil.TempDir("", "TestUpdateExternalLabels")
testutil.Ok(t, err)
defer os.RemoveAll(dir)
s := NewWriteStorage(nil, dir, defaultFlushDeadline)
externalLabels := labels.FromStrings("external", "true")
conf := &config.Config{
GlobalConfig: config.GlobalConfig{},
RemoteWriteConfigs: []*config.RemoteWriteConfig{
&config.DefaultRemoteWriteConfig,
},
}
s.ApplyConfig(conf)
testutil.Equals(t, 1, len(s.queues))
testutil.Equals(t, labels.Labels(nil), s.queues[0].externalLabels)
conf.GlobalConfig.ExternalLabels = externalLabels
s.ApplyConfig(conf)
testutil.Equals(t, 1, len(s.queues))
testutil.Equals(t, externalLabels, s.queues[0].externalLabels)
err = s.Close()
testutil.Ok(t, err)
}
func TestWriteStorageApplyConfigsIdempotent(t *testing.T) {
dir, err := ioutil.TempDir("", "TestWriteStorageApplyConfigsIdempotent")
testutil.Ok(t, err)
defer os.RemoveAll(dir)
s := NewWriteStorage(nil, dir, defaultFlushDeadline)
conf := &config.Config{
GlobalConfig: config.GlobalConfig{},
RemoteWriteConfigs: []*config.RemoteWriteConfig{
&config.DefaultRemoteWriteConfig,
},
}
s.ApplyConfig(conf)
testutil.Equals(t, 1, len(s.queues))
queue := s.queues[0]
s.ApplyConfig(conf)
testutil.Equals(t, 1, len(s.queues))
testutil.Assert(t, queue == s.queues[0], "Queue pointer should have remained the same")
err = s.Close()
testutil.Ok(t, err)
}