/
signal.go
77 lines (71 loc) · 2.06 KB
/
signal.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
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
// Copyright 2017-2019 The NATS 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.
// +build !windows
package server
import (
"os"
"os/signal"
"syscall"
natsd "github.com/yanzongzhen/nats-server/server"
)
func init() {
// Set the process name so signal code use this process name
// instead of gnatsd.
natsd.SetProcessName("nats-streaming-server")
}
// Signal Handling
func (s *StanServer) handleSignals() {
c := make(chan os.Signal, 1)
signal.Notify(c, syscall.SIGINT, syscall.SIGTERM, syscall.SIGUSR1, syscall.SIGHUP)
go func() {
for {
select {
case sig := <-c:
// Notify will relay only the signals that we have
// registered, so we don't need a "default" in the
// switch statement.
switch sig {
case syscall.SIGINT:
s.Shutdown()
os.Exit(0)
case syscall.SIGTERM:
s.Shutdown()
os.Exit(143)
case syscall.SIGUSR1:
// File log re-open for rotating file logs.
s.log.ReopenLogFile()
case syscall.SIGHUP:
s.mu.Lock()
ns := s.natsServer
nobr := s.natsOpts
s.mu.Unlock()
if ns != nil {
if err := ns.Reload(); err != nil {
s.log.Errorf("Reload: %v", err)
} else if fileOpts, err := natsd.ProcessConfigFile(nobr.ConfigFile); err == nil {
newOpts := natsd.MergeOptions(fileOpts, nobr)
s.mu.Lock()
s.natsOpts = newOpts.Clone()
s.log.UpdateNATSOptions(s.natsOpts)
s.mu.Unlock()
}
} else {
s.log.Warnf("Reload supported only for embedded NATS Server's configuration")
}
}
case <-s.shutdownCh:
return
}
}
}()
}