96 lines
2.1 KiB
Go
96 lines
2.1 KiB
Go
// +build !windows
|
|
|
|
// Copyright 2019 The Gitea Authors. All rights reserved.
|
|
// Use of this source code is governed by a MIT-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package graceful
|
|
|
|
import (
|
|
"os"
|
|
"os/signal"
|
|
"syscall"
|
|
"time"
|
|
|
|
"code.gitea.io/gitea/modules/log"
|
|
"code.gitea.io/gitea/modules/setting"
|
|
)
|
|
|
|
var hookableSignals []os.Signal
|
|
|
|
func init() {
|
|
hookableSignals = []os.Signal{
|
|
syscall.SIGHUP,
|
|
syscall.SIGUSR1,
|
|
syscall.SIGUSR2,
|
|
syscall.SIGINT,
|
|
syscall.SIGTERM,
|
|
syscall.SIGTSTP,
|
|
}
|
|
}
|
|
|
|
// handleSignals listens for os Signals and calls any hooked in function that the
|
|
// user had registered with the signal.
|
|
func (srv *Server) handleSignals() {
|
|
var sig os.Signal
|
|
|
|
signal.Notify(
|
|
srv.sigChan,
|
|
hookableSignals...,
|
|
)
|
|
|
|
pid := syscall.Getpid()
|
|
for {
|
|
sig = <-srv.sigChan
|
|
srv.preSignalHooks(sig)
|
|
switch sig {
|
|
case syscall.SIGHUP:
|
|
if setting.GracefulRestartable {
|
|
log.Info("PID: %d. Received SIGHUP. Forking...", pid)
|
|
err := srv.fork()
|
|
if err != nil {
|
|
log.Error("Error whilst forking from PID: %d : %v", pid, err)
|
|
}
|
|
} else {
|
|
log.Info("PID: %d. Received SIGHUP. Not set restartable. Shutting down...", pid)
|
|
|
|
srv.shutdown()
|
|
}
|
|
case syscall.SIGUSR1:
|
|
log.Info("PID %d. Received SIGUSR1.", pid)
|
|
case syscall.SIGUSR2:
|
|
log.Warn("PID %d. Received SIGUSR2. Hammering...", pid)
|
|
srv.hammerTime(0 * time.Second)
|
|
case syscall.SIGINT:
|
|
log.Warn("PID %d. Received SIGINT. Shutting down...", pid)
|
|
srv.shutdown()
|
|
case syscall.SIGTERM:
|
|
log.Warn("PID %d. Received SIGTERM. Shutting down...", pid)
|
|
srv.shutdown()
|
|
case syscall.SIGTSTP:
|
|
log.Info("PID %d. Received SIGTSTP.")
|
|
default:
|
|
log.Info("PID %d. Received %v.", sig)
|
|
}
|
|
srv.postSignalHooks(sig)
|
|
}
|
|
}
|
|
|
|
func (srv *Server) preSignalHooks(sig os.Signal) {
|
|
if _, notSet := srv.PreSignalHooks[sig]; !notSet {
|
|
return
|
|
}
|
|
for _, f := range srv.PreSignalHooks[sig] {
|
|
f()
|
|
}
|
|
}
|
|
|
|
func (srv *Server) postSignalHooks(sig os.Signal) {
|
|
if _, notSet := srv.PostSignalHooks[sig]; !notSet {
|
|
return
|
|
}
|
|
for _, f := range srv.PostSignalHooks[sig] {
|
|
f()
|
|
}
|
|
}
|