2fecf5b02e
Some cases can cause the server initialization to block (namely running a 2nd containerd instance by accident against the same root dir). In this case there is no way to quit the daemon except with `kill -9`. This changes context things so that server init is done in a goroutine and we wait on a channel for it to be ready while we also wait for a ctx.Done(), which will be cancelled if there is a termination signal. Signed-off-by: Brian Goff <cpuguy83@gmail.com>
80 lines
1.8 KiB
Go
80 lines
1.8 KiB
Go
//go:build linux || darwin || freebsd || solaris
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// +build linux darwin freebsd solaris
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/*
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Copyright The containerd Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package command
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import (
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"context"
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"os"
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"path/filepath"
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"github.com/containerd/containerd/log"
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"github.com/containerd/containerd/services/server"
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"golang.org/x/sys/unix"
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)
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var handledSignals = []os.Signal{
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unix.SIGTERM,
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unix.SIGINT,
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unix.SIGUSR1,
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unix.SIGPIPE,
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}
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func handleSignals(ctx context.Context, signals chan os.Signal, serverC chan *server.Server, cancel func()) chan struct{} {
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done := make(chan struct{}, 1)
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go func() {
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var server *server.Server
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for {
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select {
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case s := <-serverC:
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server = s
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case s := <-signals:
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// Do not print message when deailing with SIGPIPE, which may cause
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// nested signals and consume lots of cpu bandwidth.
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if s == unix.SIGPIPE {
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continue
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}
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log.G(ctx).WithField("signal", s).Debug("received signal")
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switch s {
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case unix.SIGUSR1:
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dumpStacks(true)
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default:
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if err := notifyStopping(ctx); err != nil {
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log.G(ctx).WithError(err).Error("notify stopping failed")
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}
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cancel()
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if server != nil {
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server.Stop()
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}
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close(done)
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return
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}
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}
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}
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}()
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return done
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}
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func isLocalAddress(path string) bool {
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return filepath.IsAbs(path)
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}
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