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main.go
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main.go
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package main
import (
"flag"
"fmt"
"net/http"
_ "net/http/pprof"
"os"
"os/signal"
"runtime"
"runtime/trace"
"strconv"
"syscall"
"time"
"github.com/grafana/grafana/pkg/extensions"
"github.com/grafana/grafana/pkg/infra/metrics"
"github.com/grafana/grafana/pkg/log"
_ "github.com/grafana/grafana/pkg/services/alerting/conditions"
_ "github.com/grafana/grafana/pkg/services/alerting/notifiers"
"github.com/grafana/grafana/pkg/setting"
_ "github.com/grafana/grafana/pkg/tsdb/azuremonitor"
_ "github.com/grafana/grafana/pkg/tsdb/cloudwatch"
_ "github.com/grafana/grafana/pkg/tsdb/elasticsearch"
_ "github.com/grafana/grafana/pkg/tsdb/graphite"
_ "github.com/grafana/grafana/pkg/tsdb/influxdb"
_ "github.com/grafana/grafana/pkg/tsdb/mysql"
_ "github.com/grafana/grafana/pkg/tsdb/opentsdb"
_ "github.com/grafana/grafana/pkg/tsdb/postgres"
_ "github.com/grafana/grafana/pkg/tsdb/prometheus"
_ "github.com/grafana/grafana/pkg/tsdb/stackdriver"
_ "github.com/grafana/grafana/pkg/tsdb/testdata"
)
var version = "5.0.0"
var commit = "NA"
var buildBranch = "master"
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 packaging = flag.String("packaging", "unknown", "describes the way Grafana was installed")
func main() {
v := flag.Bool("v", false, "prints current version and exits")
profile := flag.Bool("profile", false, "Turn on pprof profiling")
profilePort := flag.Int("profile-port", 6060, "Define custom port for profiling")
flag.Parse()
if *v {
fmt.Printf("Version %s (commit: %s, branch: %s)\n", version, commit, buildBranch)
os.Exit(0)
}
if *profile {
runtime.SetBlockProfileRate(1)
go func() {
err := http.ListenAndServe(fmt.Sprintf("localhost:%d", *profilePort), nil)
if err != nil {
panic(err)
}
}()
f, err := os.Create("trace.out")
if err != nil {
panic(err)
}
defer f.Close()
err = trace.Start(f)
if err != nil {
panic(err)
}
defer trace.Stop()
}
buildstampInt64, _ := strconv.ParseInt(buildstamp, 10, 64)
if buildstampInt64 == 0 {
buildstampInt64 = time.Now().Unix()
}
setting.BuildVersion = version
setting.BuildCommit = commit
setting.BuildStamp = buildstampInt64
setting.BuildBranch = buildBranch
setting.IsEnterprise = extensions.IsEnterprise
setting.Packaging = validPackaging(*packaging)
metrics.SetBuildInformation(version, commit, buildBranch)
server := NewGrafanaServer()
go listenToSystemSignals(server)
err := server.Run()
code := server.Exit(err)
trace.Stop()
log.Close()
os.Exit(code)
}
func validPackaging(packaging string) string {
validTypes := []string{"dev", "deb", "rpm", "docker", "brew", "hosted", "unknown"}
for _, vt := range validTypes {
if packaging == vt {
return packaging
}
}
return "unknown"
}
func listenToSystemSignals(server *GrafanaServerImpl) {
signalChan := make(chan os.Signal, 1)
sighupChan := make(chan os.Signal, 1)
signal.Notify(sighupChan, syscall.SIGHUP)
signal.Notify(signalChan, os.Interrupt, syscall.SIGTERM)
for {
select {
case <-sighupChan:
log.Reload()
case sig := <-signalChan:
server.Shutdown(fmt.Sprintf("System signal: %s", sig))
}
}
}