89 lines
1.9 KiB
Go
89 lines
1.9 KiB
Go
// Copyright 2013 The Chihaya Authors. All rights reserved.
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// Use of this source code is governed by the BSD 2-Clause license,
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// which can be found in the LICENSE file.
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package main
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import (
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"flag"
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"log"
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"os"
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"os/signal"
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"runtime"
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"runtime/pprof"
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"github.com/chihaya/chihaya/config"
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"github.com/chihaya/chihaya/server"
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_ "github.com/chihaya/chihaya/storage/backend/mock"
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_ "github.com/chihaya/chihaya/storage/tracker/mock"
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)
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var (
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profile bool
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configPath string
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)
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func init() {
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flag.BoolVar(&profile, "profile", false, "Generate profiling data for pprof into chihaya.cpu")
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flag.StringVar(&configPath, "config", "", "The location of a valid configuration file.")
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}
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func main() {
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flag.Parse()
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runtime.GOMAXPROCS(runtime.NumCPU())
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// Enable the profile if flagged.
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if profile {
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log.Println("running with profiling enabled")
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f, err := os.Create("chihaya.cpu")
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if err != nil {
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log.Fatalf("failed to create profile file: %s\n", err)
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}
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defer f.Close()
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pprof.StartCPUProfile(f)
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}
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// Load the config file.
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if configPath == "" {
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log.Fatalf("must specify a configuration file")
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}
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conf, err := config.Open(configPath)
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if err != nil {
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log.Fatalf("failed to parse configuration file: %s\n", err)
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}
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log.Println("succesfully loaded config")
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// Create a new server.
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s, err := server.New(conf)
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if err != nil {
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log.Fatalf("failed to create server: %s\n", err)
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}
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// Spawn a goroutine to handle interrupts and safely shut down.
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go func() {
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c := make(chan os.Signal, 1)
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signal.Notify(c, os.Interrupt)
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<-c
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if profile {
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pprof.StopCPUProfile()
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}
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log.Println("caught interrupt, shutting down.")
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err := s.Stop()
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if err != nil {
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panic("failed to shutdown cleanly")
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}
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log.Println("shutdown successfully")
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<-c
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os.Exit(0)
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}()
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// Start the server listening and handling requests.
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err = s.ListenAndServe()
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if err != nil {
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log.Fatalf("failed to start server: %s\n", err)
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}
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}
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