forked from sassoftware/relic
/
signals_unix.go
58 lines (54 loc) · 1.38 KB
/
signals_unix.go
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// +build !windows
//
// Copyright (c) SAS Institute Inc.
//
// 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 servecmd
import (
"log"
"os"
"os/signal"
"syscall"
"github.com/sassoftware/relic/server/daemon"
)
func watchSignals(srv *daemon.Daemon) {
ch := make(chan os.Signal, 4)
signal.Notify(
ch,
syscall.SIGINT,
syscall.SIGTERM,
syscall.SIGQUIT,
syscall.SIGUSR1,
syscall.SIGUSR2,
)
already := false
for {
sig := <-ch
switch {
case sig == syscall.SIGUSR1:
if err := srv.ReopenLogger(); err != nil {
log.Printf("Failed to reopen logs: %s", err)
}
case !already:
log.Printf("Received signal %d; shutting down gracefully", sig)
if err := srv.Close(); err != nil {
log.Printf("ERROR: failed to shutdown gracefully: %s", err)
}
already = true
default:
log.Printf("Received signal %d; shutting down immediately", sig)
os.Exit(0)
}
}
}