4c6a7ee158
* Decouple shared functions between controllers * Apply suggestions from code review Co-authored-by: Jintao Zhang <tao12345666333@163.com> * Fix package names and fmt Co-authored-by: Jintao Zhang <tao12345666333@163.com>
49 lines
1.3 KiB
Go
49 lines
1.3 KiB
Go
/*
|
|
Copyright 2022 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package process
|
|
|
|
import (
|
|
"os"
|
|
"os/signal"
|
|
"syscall"
|
|
"time"
|
|
|
|
klog "k8s.io/klog/v2"
|
|
)
|
|
|
|
type exiter func(code int)
|
|
|
|
// HandleSigterm receives a ProcessController interface and deals with
|
|
// the graceful shutdown
|
|
func HandleSigterm(ngx ProcessController, delay int, exit exiter) {
|
|
signalChan := make(chan os.Signal, 1)
|
|
signal.Notify(signalChan, syscall.SIGTERM)
|
|
<-signalChan
|
|
klog.InfoS("Received SIGTERM, shutting down")
|
|
|
|
exitCode := 0
|
|
if err := ngx.Stop(); err != nil {
|
|
klog.Warningf("Error during shutdown: %v", err)
|
|
exitCode = 1
|
|
}
|
|
|
|
klog.Infof("Handled quit, delaying controller exit for %d seconds", delay)
|
|
time.Sleep(time.Duration(delay) * time.Second)
|
|
|
|
klog.InfoS("Exiting", "code", exitCode)
|
|
exit(exitCode)
|
|
}
|