mirror of https://github.com/caddyserver/caddy.git
63 lines
2.1 KiB
Go
63 lines
2.1 KiB
Go
// Copyright 2015 Matthew Holt and The Caddy Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//go:build !windows && !plan9 && !nacl && !js
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package caddy
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import (
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"context"
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"os"
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"os/signal"
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"syscall"
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"github.com/caddyserver/certmagic"
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"go.uber.org/zap"
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)
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// trapSignalsPosix captures POSIX-only signals.
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func trapSignalsPosix() {
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// Ignore all SIGPIPE signals to prevent weird issues with systemd: https://github.com/dunglas/frankenphp/issues/1020
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// Docker/Moby has a similar hack: https://github.com/moby/moby/blob/d828b032a87606ae34267e349bf7f7ccb1f6495a/cmd/dockerd/docker.go#L87-L90
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signal.Ignore(syscall.SIGPIPE)
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go func() {
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sigchan := make(chan os.Signal, 1)
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signal.Notify(sigchan, syscall.SIGTERM, syscall.SIGHUP, syscall.SIGQUIT, syscall.SIGUSR1, syscall.SIGUSR2)
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for sig := range sigchan {
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switch sig {
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case syscall.SIGQUIT:
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Log().Info("quitting process immediately", zap.String("signal", "SIGQUIT"))
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certmagic.CleanUpOwnLocks(context.TODO(), Log()) // try to clean up locks anyway, it's important
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os.Exit(ExitCodeForceQuit)
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case syscall.SIGTERM:
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Log().Info("shutting down apps, then terminating", zap.String("signal", "SIGTERM"))
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exitProcessFromSignal("SIGTERM")
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case syscall.SIGUSR1:
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Log().Info("not implemented", zap.String("signal", "SIGUSR1"))
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case syscall.SIGUSR2:
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Log().Info("not implemented", zap.String("signal", "SIGUSR2"))
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case syscall.SIGHUP:
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// ignore; this signal is sometimes sent outside of the user's control
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Log().Info("not implemented", zap.String("signal", "SIGHUP"))
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}
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}
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}()
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}
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