mirror of https://github.com/go-gitea/gitea.git
75 lines
1.8 KiB
Go
75 lines
1.8 KiB
Go
// 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"
|
|
"runtime"
|
|
|
|
"code.gitea.io/gitea/modules/log"
|
|
)
|
|
|
|
// awaitShutdown waits for the shutdown signal from the Manager
|
|
func (srv *Server) awaitShutdown() {
|
|
select {
|
|
case <-GetManager().IsShutdown():
|
|
// Shutdown
|
|
srv.doShutdown()
|
|
case <-GetManager().IsHammer():
|
|
// Hammer
|
|
srv.doShutdown()
|
|
srv.doHammer()
|
|
}
|
|
<-GetManager().IsHammer()
|
|
srv.doHammer()
|
|
}
|
|
|
|
// shutdown closes the listener so that no new connections are accepted
|
|
// and starts a goroutine that will hammer (stop all running requests) the server
|
|
// after setting.GracefulHammerTime.
|
|
func (srv *Server) doShutdown() {
|
|
// only shutdown if we're running.
|
|
if srv.getState() != stateRunning {
|
|
return
|
|
}
|
|
|
|
srv.setState(stateShuttingDown)
|
|
|
|
if srv.OnShutdown != nil {
|
|
srv.OnShutdown()
|
|
}
|
|
err := srv.listener.Close()
|
|
if err != nil {
|
|
log.Error("PID: %d Listener.Close() error: %v", os.Getpid(), err)
|
|
} else {
|
|
log.Info("PID: %d Listener (%s) closed.", os.Getpid(), srv.listener.Addr())
|
|
}
|
|
}
|
|
|
|
func (srv *Server) doHammer() {
|
|
defer func() {
|
|
// We call srv.wg.Done() until it panics.
|
|
// This happens if we call Done() when the WaitGroup counter is already at 0
|
|
// So if it panics -> we're done, Serve() will return and the
|
|
// parent will goroutine will exit.
|
|
if r := recover(); r != nil {
|
|
log.Error("WaitGroup at 0: Error: %v", r)
|
|
}
|
|
}()
|
|
if srv.getState() != stateShuttingDown {
|
|
return
|
|
}
|
|
log.Warn("Forcefully shutting down parent")
|
|
for {
|
|
if srv.getState() == stateTerminate {
|
|
break
|
|
}
|
|
srv.wg.Done()
|
|
|
|
// Give other goroutines a chance to finish before we forcibly stop them.
|
|
runtime.Gosched()
|
|
}
|
|
}
|