minio/cmd/signals.go
Harshavardhana fb268add7a
do not flush if Write() failed (#13597)
- Go might reset the internal http.ResponseWriter() to `nil`
  after Write() failure if the go-routine has returned, do not
  flush() such scenarios and avoid spurious flushes() as
  returning handlers always flush.
- fix some racy tests with the console 
- avoid ticker leaks in certain situations
2021-11-18 17:19:58 -08:00

98 lines
2.4 KiB
Go

// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"context"
"errors"
"net/http"
"os"
"strings"
"github.com/minio/minio/internal/logger"
)
func handleSignals() {
// Custom exit function
exit := func(success bool) {
// If global profiler is set stop before we exit.
globalProfilerMu.Lock()
defer globalProfilerMu.Unlock()
for _, p := range globalProfiler {
p.Stop()
}
if success {
os.Exit(0)
}
os.Exit(1)
}
stopProcess := func() bool {
var err, oerr error
// send signal to various go-routines that they need to quit.
cancelGlobalContext()
if globalNotificationSys != nil {
globalNotificationSys.RemoveAllRemoteTargets()
}
if httpServer := newHTTPServerFn(); httpServer != nil {
err = httpServer.Shutdown()
if !errors.Is(err, http.ErrServerClosed) {
logger.LogIf(context.Background(), err)
}
}
if objAPI := newObjectLayerFn(); objAPI != nil {
oerr = objAPI.Shutdown(context.Background())
logger.LogIf(context.Background(), oerr)
}
if srv := newConsoleServerFn(); srv != nil {
logger.LogIf(context.Background(), srv.Shutdown())
}
return (err == nil && oerr == nil)
}
for {
select {
case <-globalHTTPServerErrorCh:
exit(stopProcess())
case osSignal := <-globalOSSignalCh:
logger.Info("Exiting on signal: %s", strings.ToUpper(osSignal.String()))
exit(stopProcess())
case signal := <-globalServiceSignalCh:
switch signal {
case serviceRestart:
logger.Info("Restarting on service signal")
stop := stopProcess()
rerr := restartProcess()
logger.LogIf(context.Background(), rerr)
exit(stop && rerr == nil)
case serviceStop:
logger.Info("Stopping on service signal")
exit(stopProcess())
}
}
}
}