85 lines
2.1 KiB
Go
85 lines
2.1 KiB
Go
// 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 (
|
|
"sync"
|
|
|
|
"github.com/prometheus/common/model"
|
|
|
|
"github.com/prometheus/prometheus/config"
|
|
)
|
|
|
|
// Storage allows queueing samples for remote writes.
|
|
type Storage struct {
|
|
mtx sync.RWMutex
|
|
queues []*QueueManager
|
|
}
|
|
|
|
// ApplyConfig updates the state as the new config requires.
|
|
func (s *Storage) ApplyConfig(conf *config.Config) error {
|
|
s.mtx.Lock()
|
|
defer s.mtx.Unlock()
|
|
|
|
newQueues := []*QueueManager{}
|
|
// TODO: we should only stop & recreate queues which have changes,
|
|
// as this can be quite disruptive.
|
|
for i, rwConf := range conf.RemoteWriteConfigs {
|
|
c, err := NewClient(i, rwConf)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
newQueues = append(newQueues, NewQueueManager(QueueManagerConfig{
|
|
Client: c,
|
|
ExternalLabels: conf.GlobalConfig.ExternalLabels,
|
|
RelabelConfigs: rwConf.WriteRelabelConfigs,
|
|
}))
|
|
}
|
|
|
|
for _, q := range s.queues {
|
|
q.Stop()
|
|
}
|
|
|
|
s.queues = newQueues
|
|
for _, q := range s.queues {
|
|
q.Start()
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Stop the background processing of the storage queues.
|
|
func (s *Storage) Stop() {
|
|
for _, q := range s.queues {
|
|
q.Stop()
|
|
}
|
|
}
|
|
|
|
// Append implements storage.SampleAppender. Always returns nil.
|
|
func (s *Storage) Append(smpl *model.Sample) error {
|
|
s.mtx.RLock()
|
|
defer s.mtx.RUnlock()
|
|
|
|
for _, q := range s.queues {
|
|
q.Append(smpl)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// NeedsThrottling implements storage.SampleAppender. It will always return
|
|
// false as a remote storage drops samples on the floor if backlogging instead
|
|
// of asking for throttling.
|
|
func (s *Storage) NeedsThrottling() bool {
|
|
return false
|
|
}
|