prometheus/storage/remote/remote.go
2015-09-03 16:38:04 +02:00

118 lines
2.9 KiB
Go

// Copyright 2015 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"
"time"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/common/model"
"github.com/prometheus/prometheus/config"
"github.com/prometheus/prometheus/storage/remote/influxdb"
"github.com/prometheus/prometheus/storage/remote/opentsdb"
)
// Storage collects multiple remote storage queues.
type Storage struct {
queues []*StorageQueueManager
globalLabels model.LabelSet
mtx sync.RWMutex
}
// ApplyConfig updates the status state as the new config requires.
// Returns true on success.
func (s *Storage) ApplyConfig(conf *config.Config) bool {
s.mtx.Lock()
defer s.mtx.Unlock()
s.globalLabels = conf.GlobalConfig.Labels
return true
}
// New returns a new remote Storage.
func New(o *Options) *Storage {
s := &Storage{}
if o.OpentsdbURL != "" {
c := opentsdb.NewClient(o.OpentsdbURL, o.StorageTimeout)
s.queues = append(s.queues, NewStorageQueueManager(c, 100*1024))
}
if o.InfluxdbURL != "" {
c := influxdb.NewClient(o.InfluxdbURL, o.StorageTimeout, o.InfluxdbDatabase, o.InfluxdbRetentionPolicy)
s.queues = append(s.queues, NewStorageQueueManager(c, 100*1024))
}
if len(s.queues) == 0 {
return nil
}
return s
}
// Options contains configuration parameters for a remote storage.
type Options struct {
StorageTimeout time.Duration
InfluxdbURL string
InfluxdbRetentionPolicy string
InfluxdbDatabase string
OpentsdbURL string
}
// Run starts the background processing of the storage queues.
func (s *Storage) Run() {
for _, q := range s.queues {
go q.Run()
}
}
// Stop the background processing of the storage queues.
func (s *Storage) Stop() {
for _, q := range s.queues {
q.Stop()
}
}
// Append implements storage.SampleAppender.
func (s *Storage) Append(smpl *model.Sample) {
s.mtx.RLock()
var snew model.Sample
snew = *smpl
snew.Metric = smpl.Metric.Clone()
for ln, lv := range s.globalLabels {
if _, ok := smpl.Metric[ln]; !ok {
snew.Metric[ln] = lv
}
}
s.mtx.RUnlock()
for _, q := range s.queues {
q.Append(&snew)
}
}
// Describe implements prometheus.Collector.
func (s *Storage) Describe(ch chan<- *prometheus.Desc) {
for _, q := range s.queues {
q.Describe(ch)
}
}
// Collect implements prometheus.Collector.
func (s *Storage) Collect(ch chan<- prometheus.Metric) {
for _, q := range s.queues {
q.Collect(ch)
}
}