forked from SUSE/zypper-docker
-
Notifications
You must be signed in to change notification settings - Fork 0
/
signals.go
44 lines (41 loc) · 1.22 KB
/
signals.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
// Copyright (c) 2015 SUSE LLC. All rights reserved.
//
// 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.
// This is a thin wrapper on top of zypper that allows patching docker images
// in a safe way.
package main
import (
"log"
"os"
"os/signal"
"syscall"
)
// Listen to all signals, propagates SIGINT, SIGTSTP and SIGTERM
// to the killChannel channel.
func listenSignals() {
killChannel = make(chan bool)
c := make(chan os.Signal)
signal.Notify(c)
go func() {
for sig := range c {
switch sig {
case syscall.SIGQUIT, syscall.SIGINT, syscall.SIGTSTP,
syscall.SIGTERM:
log.Printf("Shutting down gracefully.")
killChannel <- true
default:
log.Printf("Signal not handled. Doing nothing...")
}
}
}()
}