// New returns a new remote Storage.
func New(o *Options) *Storage {
s := &Storage{}
if o.GraphiteAddress != "" {
c := graphite.NewClient(
o.GraphiteAddress, o.GraphiteTransport,
o.StorageTimeout, o.GraphitePrefix)
s.queues = append(s.queues, NewStorageQueueManager(c, 100*1024))
}
if o.OpentsdbURL != "" {
c := opentsdb.NewClient(o.OpentsdbURL, o.StorageTimeout)
s.queues = append(s.queues, NewStorageQueueManager(c, 100*1024))
}
if o.InfluxdbURL != nil {
conf := influx.Config{
URL: *o.InfluxdbURL,
Username: o.InfluxdbUsername,
Password: o.InfluxdbPassword,
Timeout: o.StorageTimeout,
}
c := influxdb.NewClient(conf, o.InfluxdbDatabase, o.InfluxdbRetentionPolicy)
prometheus.MustRegister(c)
s.queues = append(s.queues, NewStorageQueueManager(c, 100*1024))
}
if len(s.queues) == 0 {
return nil
}
return s
}
// 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
}
func Main() int {
if err := parse(os.Args[1:]); err != nil {
return 2
}
versionInfoTmpl.Execute(os.Stdout, BuildInfo)
if cfg.printVersion {
return 0
}
memStorage := local.NewMemorySeriesStorage(&cfg.storage)
var (
sampleAppender storage.SampleAppender
remoteStorageQueues []*remote.StorageQueueManager
)
if cfg.opentsdbURL == "" && cfg.influxdbURL == "" {
log.Warnf("No remote storage URLs provided; not sending any samples to long-term storage")
sampleAppender = memStorage
} else {
fanout := storage.Fanout{memStorage}
addRemoteStorage := func(c remote.StorageClient) {
qm := remote.NewStorageQueueManager(c, 100*1024)
fanout = append(fanout, qm)
remoteStorageQueues = append(remoteStorageQueues, qm)
}
if cfg.opentsdbURL != "" {
addRemoteStorage(opentsdb.NewClient(cfg.opentsdbURL, cfg.remoteStorageTimeout))
}
if cfg.influxdbURL != "" {
addRemoteStorage(influxdb.NewClient(cfg.influxdbURL, cfg.remoteStorageTimeout, cfg.influxdbDatabase, cfg.influxdbRetentionPolicy))
}
sampleAppender = fanout
}
var (
notificationHandler = notification.NewNotificationHandler(&cfg.notification)
targetManager = retrieval.NewTargetManager(sampleAppender)
queryEngine = promql.NewEngine(memStorage, &cfg.queryEngine)
)
ruleManager := rules.NewManager(&rules.ManagerOptions{
SampleAppender: sampleAppender,
NotificationHandler: notificationHandler,
QueryEngine: queryEngine,
PrometheusURL: cfg.prometheusURL,
PathPrefix: cfg.web.PathPrefix,
})
flags := map[string]string{}
cfg.fs.VisitAll(func(f *flag.Flag) {
flags[f.Name] = f.Value.String()
})
status := &web.PrometheusStatus{
BuildInfo: BuildInfo,
TargetPools: targetManager.Pools,
Rules: ruleManager.Rules,
Flags: flags,
Birth: time.Now(),
}
webHandler := web.New(memStorage, queryEngine, ruleManager, status, &cfg.web)
if !reloadConfig(cfg.configFile, status, targetManager, ruleManager) {
os.Exit(1)
}
// Wait for reload or termination signals. Start the handler for SIGHUP as
// early as possible, but ignore it until we are ready to handle reloading
// our config.
hup := make(chan os.Signal)
hupReady := make(chan bool)
signal.Notify(hup, syscall.SIGHUP)
go func() {
<-hupReady
for range hup {
reloadConfig(cfg.configFile, status, targetManager, ruleManager)
}
}()
// Start all components.
if err := memStorage.Start(); err != nil {
log.Errorln("Error opening memory series storage:", err)
return 1
}
defer func() {
if err := memStorage.Stop(); err != nil {
log.Errorln("Error stopping storage:", err)
}
}()
// The storage has to be fully initialized before registering.
registry.MustRegister(memStorage)
registry.MustRegister(notificationHandler)
for _, q := range remoteStorageQueues {
registry.MustRegister(q)
go q.Run()
defer q.Stop()
}
go ruleManager.Run()
defer ruleManager.Stop()
go notificationHandler.Run()
defer notificationHandler.Stop()
go targetManager.Run()
defer targetManager.Stop()
defer queryEngine.Stop()
go webHandler.Run()
// Wait for reload or termination signals.
close(hupReady) // Unblock SIGHUP handler.
term := make(chan os.Signal)
signal.Notify(term, os.Interrupt, syscall.SIGTERM)
select {
case <-term:
log.Warn("Received SIGTERM, exiting gracefully...")
case <-webHandler.Quit():
log.Warn("Received termination request via web service, exiting gracefully...")
}
close(hup)
log.Info("See you next time!")
return 0
}