mirror of
https://github.com/minio/minio.git
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822eb5ddc7
This PR refactors object layer handling such that upon failure in sub-system initialization server reaches a stage of safe-mode operation wherein only certain API operations are enabled and available. This allows for fixing many scenarios such as - incorrect configuration in vault, etcd, notification targets - missing files, incomplete config migrations unable to read encrypted content etc - any other issues related to notification, policies, lifecycle etc
94 lines
2.3 KiB
Go
94 lines
2.3 KiB
Go
/*
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* MinIO Cloud Storage, (C) 2015-2019 MinIO, Inc.
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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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*/
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package cmd
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import (
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"context"
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"os"
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"strings"
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"github.com/minio/minio/cmd/logger"
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)
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func handleSignals() {
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// Custom exit function
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exit := func(success bool) {
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// If global profiler is set stop before we exit.
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if globalProfiler != nil {
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globalProfiler.Stop()
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}
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if success {
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os.Exit(0)
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}
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os.Exit(1)
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}
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stopProcess := func() bool {
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var err, oerr error
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if globalNotificationSys != nil {
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globalNotificationSys.RemoveAllRemoteTargets()
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}
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// Stop watching for any certificate changes.
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globalTLSCerts.Stop()
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err = globalHTTPServer.Shutdown()
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logger.LogIf(context.Background(), err)
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// send signal to various go-routines that they need to quit.
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close(GlobalServiceDoneCh)
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if objAPI := newObjectLayerWithoutSafeModeFn(); objAPI != nil {
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oerr = objAPI.Shutdown(context.Background())
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logger.LogIf(context.Background(), oerr)
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}
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return (err == nil && oerr == nil)
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}
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for {
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select {
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case err := <-globalHTTPServerErrorCh:
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if objAPI := newObjectLayerWithoutSafeModeFn(); objAPI != nil {
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objAPI.Shutdown(context.Background())
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}
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if err != nil {
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logger.Fatal(err, "Unable to start MinIO server")
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}
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exit(true)
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case osSignal := <-globalOSSignalCh:
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logger.Info("Exiting on signal: %s", strings.ToUpper(osSignal.String()))
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exit(stopProcess())
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case signal := <-globalServiceSignalCh:
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switch signal {
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case serviceRestart:
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logger.Info("Restarting on service signal")
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stop := stopProcess()
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rerr := restartProcess()
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logger.LogIf(context.Background(), rerr)
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exit(stop && rerr == nil)
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case serviceStop:
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logger.Info("Stopping on service signal")
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exit(stopProcess())
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}
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}
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}
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}
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