forked from raintank/grafana
/
main.go
161 lines (135 loc) · 3.9 KB
/
main.go
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package main
import (
"flag"
"io/ioutil"
"os"
"os/signal"
"path/filepath"
"runtime"
"strconv"
"syscall"
"time"
"github.com/Dieterbe/profiletrigger/heap"
"github.com/grafana/grafana/pkg/alerting"
"github.com/grafana/grafana/pkg/api"
"github.com/grafana/grafana/pkg/cmd"
"github.com/grafana/grafana/pkg/log"
"github.com/grafana/grafana/pkg/login"
"github.com/grafana/grafana/pkg/metric/helper"
"github.com/grafana/grafana/pkg/metrics"
"github.com/grafana/grafana/pkg/plugins"
"github.com/grafana/grafana/pkg/services/collectoreventpublisher"
"github.com/grafana/grafana/pkg/services/elasticstore"
"github.com/grafana/grafana/pkg/services/eventpublisher"
"github.com/grafana/grafana/pkg/services/metricpublisher"
"github.com/grafana/grafana/pkg/services/notifications"
"github.com/grafana/grafana/pkg/services/search"
"github.com/grafana/grafana/pkg/services/sqlstore"
"github.com/grafana/grafana/pkg/setting"
"github.com/grafana/grafana/pkg/social"
)
var version = "master"
var commit = "NA"
var buildstamp string
var configFile = flag.String("config", "", "path to config file")
var homePath = flag.String("homepath", "", "path to grafana install/home path, defaults to working directory")
var pidFile = flag.String("pidfile", "", "path to pid file")
var exitChan = make(chan int)
func init() {
runtime.GOMAXPROCS(runtime.NumCPU())
}
func main() {
buildstampInt64, _ := strconv.ParseInt(buildstamp, 10, 64)
setting.BuildVersion = version
setting.BuildCommit = commit
setting.BuildStamp = buildstampInt64
go listenToSystemSignels()
flag.Parse()
writePIDFile()
initRuntime()
if setting.ProfileHeapMB > 0 {
errors := make(chan error)
go func() {
for e := range errors {
log.Error(0, e.Error())
}
}()
heap, _ := heap.New(setting.ProfileHeapDir, setting.ProfileHeapMB*1000000, setting.ProfileHeapWait, time.Duration(1)*time.Second, errors)
go heap.Run()
}
search.Init()
login.Init()
social.NewOAuthService()
eventpublisher.Init()
plugins.Init()
elasticstore.Init()
metricsBackend, err := helper.New(setting.StatsdEnabled, setting.StatsdAddr, setting.StatsdType, "grafana", setting.InstanceId)
if err != nil {
log.Error(3, "Statsd client:", err)
}
metricpublisher.Init(metricsBackend)
collectoreventpublisher.Init(metricsBackend)
api.InitCollectorController(metricsBackend)
if setting.AlertingEnabled {
alerting.Init(metricsBackend)
alerting.Construct()
}
if err := notifications.Init(); err != nil {
log.Fatal(3, "Notification service failed to initialize", err)
}
if setting.ReportingEnabled {
go metrics.StartUsageReportLoop()
}
cmd.StartServer()
exitChan <- 0
}
func initRuntime() {
err := setting.NewConfigContext(&setting.CommandLineArgs{
Config: *configFile,
HomePath: *homePath,
Args: flag.Args(),
})
if err != nil {
log.Fatal(3, err.Error())
}
log.Info("Starting Grafana")
log.Info("Version: %v, Commit: %v, Build date: %v", setting.BuildVersion, setting.BuildCommit, time.Unix(setting.BuildStamp, 0))
setting.LogConfigurationInfo()
sqlstore.NewEngine()
sqlstore.EnsureAdminUser()
}
func writePIDFile() {
if *pidFile == "" {
return
}
// Ensure the required directory structure exists.
err := os.MkdirAll(filepath.Dir(*pidFile), 0700)
if err != nil {
log.Fatal(3, "Failed to verify pid directory", err)
}
// Retrieve the PID and write it.
pid := strconv.Itoa(os.Getpid())
if err := ioutil.WriteFile(*pidFile, []byte(pid), 0644); err != nil {
log.Fatal(3, "Failed to write pidfile", err)
}
}
func listenToSystemSignels() {
signalChan := make(chan os.Signal, 1)
code := 0
signal.Notify(signalChan, os.Interrupt)
signal.Notify(signalChan, os.Kill)
signal.Notify(signalChan, syscall.SIGTERM)
select {
case sig := <-signalChan:
log.Info("Received signal %s. shutting down", sig)
case code = <-exitChan:
switch code {
case 0:
log.Info("Shutting down")
default:
log.Warn("Shutting down")
}
}
log.Close()
os.Exit(code)
}