gdaemon

Daemon

daemon package does add daemon, logging and forever function to your program.

the below command line arguments you can passed to your program after you using daemon package.

1. --forver or -forver

the argument will fork a worker process and master process monit worker process , and restart it when it crashed.

1. --daemon or -daemon

the argument will put your program running in background , only working in linux uinx etc.

1. --flog or -flog <filename.log>

the argument will logging your program stdout to the log file.

1. notice

you maybe execute your program without "daemon package" like this:

./foobar -u root

after using daemon package, execute your program can be like this:

./foobar -u root -forever -daemon -flog foobar.log

Demo

package main

import (
	"fmt"
	"os"
	"os/signal"
	"syscall"

	"github.com/snail007/gmc/process/daemon"
)

func main() {
	//the code block should be in your main function,and the actual main() change to doMain()
	if err := gdaemon.Start(); err != nil {
		fmt.Println(err)
		return
	}
	if gdaemon.CanRun() {
		//call actual main()
		go doMain()
	}
	//waiting kill signal
	signalChan := make(chan os.Signal, 1)
	signal.Notify(signalChan, os.Interrupt, syscall.SIGHUP, syscall.SIGINT, syscall.SIGTERM, syscall.SIGQUIT)
	<-signalChan
	//do clean
	gdaemon.Clean()
}

//your main function
func doMain() {
	//flag.Parse() should be called here if you have
}