forked from eremetic-framework/eremetic
/
eremetic.go
82 lines (71 loc) · 1.87 KB
/
eremetic.go
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package main
import (
"fmt"
"net/http"
"os"
"os/signal"
log "github.com/dmuth/google-go-log4go"
"github.com/kardianos/osext"
"github.com/prometheus/client_golang/prometheus"
"github.com/spf13/viper"
"github.com/klarna/eremetic/database"
"github.com/klarna/eremetic/routes"
"github.com/klarna/eremetic/scheduler"
)
func readConfig() {
path, _ := osext.ExecutableFolder()
viper.AddConfigPath("/etc/eremetic")
viper.AddConfigPath(path)
viper.AutomaticEnv()
viper.SetConfigName("eremetic")
viper.SetDefault("name", "Eremetic")
viper.SetDefault("user", "root")
viper.SetDefault("loglevel", "debug")
viper.SetDefault("database", "db/eremetic.db")
viper.SetDefault("checkpoint", "true")
viper.SetDefault("failover_timeout", 2592000.0)
viper.ReadInConfig()
}
func setupLogging() {
log.SetLevelString(viper.GetString("loglevel"))
log.SetDisplayTime(true)
}
func setupMetrics() {
prometheus.MustRegister(scheduler.TasksCreated)
prometheus.MustRegister(scheduler.TasksLaunched)
prometheus.MustRegister(scheduler.TasksTerminated)
prometheus.MustRegister(scheduler.TasksDelayed)
prometheus.MustRegister(scheduler.TasksRunning)
prometheus.MustRegister(scheduler.QueueSize)
}
func main() {
if len(os.Args) == 2 && os.Args[1] == "--version" {
fmt.Println(Version)
os.Exit(0)
}
readConfig()
setupLogging()
setupMetrics()
defer database.Close()
bind := fmt.Sprintf("%s:%d", viper.GetString("address"), viper.GetInt("port"))
// Catch interrupt
go func() {
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt, os.Kill)
s := <-c
if s != os.Interrupt && s != os.Kill {
return
}
log.Info("Eremetic is shutting down")
os.Exit(0)
}()
sched := scheduler.Create()
router := routes.Create(sched)
log.Infof("listening to %s", bind)
go scheduler.Run(sched)
err := http.ListenAndServe(bind, router)
if err != nil {
log.Error(err.Error())
os.Exit(1)
}
}