Golang catch signals

Question

I want to implement a \"process wrapper\" in Go. Basically what it will do, is launch a process (lets say a node server) and monitor it (catch signals like SIGKILL, SIGTERM ...)

Answer 1

You can use signal.Notify :

import (
"os"
"os/signal"
"syscall"
)

func main() {
    signalChannel := make(chan os.Signal, 2)
    signal.Notify(signalChannel, os.Interrupt, syscall.SIGTERM)
    go func() {
        sig := <-signalChannel
        switch sig {
        case os.Interrupt:
            //handle SIGINT
        case syscall.SIGTERM:
            //handle SIGTERM
        }
    }()
    // ...
}