Enables graceful shutdown of pretty much anything you can imagine. All you need is a blocking start function that returns a known error on successful shutdown, and a shutdown function.
Includes utility functions to handle HTTP servers in a one-liner. Also includes a helper function to handle most common OS process interrupt signals.
func main() {
m := http.NewServeMux()
m.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
log.Print("start Hello World")
time.Sleep(10 * time.Second)
w.Write([]byte("Hello World"))
log.Print("finish Hello World")
})
s := &http.Server{
Handler: m,
Addr: "0.0.0.0:8080",
}
ctx := graceful.NotifyShutdown()
err := graceful.ListenAndServe(ctx, s, 60*time.Second)
if err != nil {
log.Printf("error during shutdown: %s", err)
return
}
log.Print("gracefully shut down")
}Start the server, open localhost:8080 in the browser and then terminate the process. Check the fibonacci example in the examples directory for a sample of how to use the customizable Start function.