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Signed-off-by: Zuti He <ilyeeelihe@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,128 @@ | ||
| /* | ||
| Copyright The containerd Authors. | ||
| 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 main | ||
|
|
||
| import ( | ||
| "context" | ||
| "flag" | ||
| golog "log" | ||
| "net" | ||
| "os" | ||
| "os/signal" | ||
| "path/filepath" | ||
|
|
||
| "github.com/containerd/containerd/log" | ||
| sddaemon "github.com/coreos/go-systemd/v22/daemon" | ||
| "github.com/sirupsen/logrus" | ||
| "golang.org/x/sys/unix" | ||
| "google.golang.org/grpc" | ||
|
|
||
| "github.com/containerd/stargz-snapshotter/fusemanager" | ||
| pb "github.com/containerd/stargz-snapshotter/fusemanager/api" | ||
| ) | ||
|
|
||
| const ( | ||
| defaultStoreAddr = "/var/lib/containerd-stargz-grpc/fusestore.db" | ||
| defaultSockerAddr = "/run/containerd-stargz-grpc/fuse-manager.sock" | ||
| defaultLogLevel = logrus.InfoLevel | ||
| ) | ||
|
|
||
| var ( | ||
| fuseStoreAddr = flag.String("fusestore", defaultStoreAddr, "address for the fusemanager's store") | ||
| socketAddr = flag.String("socket", defaultSockerAddr, "address for the fusemanager's gRPC socket") | ||
| logLevel = flag.String("log-level", defaultLogLevel.String(), "set the logging level [trace, debug, info, warn, error, fatal, panic]") | ||
| ) | ||
|
|
||
| func main() { | ||
| flag.Parse() | ||
|
|
||
| lvl, err := logrus.ParseLevel(*logLevel) | ||
| if err != nil { | ||
| log.L.WithError(err).Fatal("failed to prepare logger") | ||
| } | ||
|
|
||
| logrus.SetLevel(lvl) | ||
| logrus.SetFormatter(&logrus.JSONFormatter{ | ||
| TimestampFormat: log.RFC3339NanoFixed, | ||
| }) | ||
|
|
||
| ctx := log.WithLogger(context.Background(), log.L) | ||
|
|
||
| golog.SetOutput(log.G(ctx).WriterLevel(logrus.DebugLevel)) | ||
|
|
||
| sigCh := make(chan os.Signal, 1) | ||
| errCh := make(chan error, 1) | ||
| server := grpc.NewServer() | ||
|
|
||
| signal.Notify(sigCh, unix.SIGINT, unix.SIGTERM) | ||
| go func() { | ||
| select { | ||
| case sig := <-sigCh: | ||
| log.G(ctx).Infof("Got %v", sig) | ||
| server.Stop() | ||
| case err := <-errCh: | ||
| log.G(ctx).WithError(err).Fatal("failed to run stargz fuse manager") | ||
| } | ||
| }() | ||
|
|
||
| // Prepare the directory for the socket | ||
| if err := os.MkdirAll(filepath.Dir(*socketAddr), 0700); err != nil { | ||
| log.G(ctx).WithError(err).Errorf("failed to create directory %s", filepath.Dir(*socketAddr)) | ||
| errCh <- &net.DNSConfigError{} | ||
| } | ||
|
|
||
| // Try to remove the socket file to avoid EADDRINUSE | ||
| if err := os.Remove(*socketAddr); err != nil && !os.IsNotExist(err) { | ||
| log.G(ctx).WithError(err).Error("failed to remove old socket file") | ||
| errCh <- err | ||
| } | ||
|
|
||
| l, err := net.Listen("unix", *socketAddr) | ||
| if err != nil { | ||
| log.G(ctx).WithError(err).Error("failed to listen socket") | ||
| errCh <- err | ||
| } | ||
|
|
||
| if os.Getenv("NOTIFY_SOCKET") != "" { | ||
| notified, notifyErr := sddaemon.SdNotify(false, sddaemon.SdNotifyReady) | ||
| log.G(ctx).Debugf("SdNotifyReady notified=%v, err=%v", notified, notifyErr) | ||
| } | ||
| defer func() { | ||
| if os.Getenv("NOTIFY_SOCKET") != "" { | ||
| notified, notifyErr := sddaemon.SdNotify(false, sddaemon.SdNotifyStopping) | ||
| log.G(ctx).Debugf("SdNotifyStopping notified=%v, err=%v", notified, notifyErr) | ||
| } | ||
| }() | ||
|
|
||
| fm, err := fusemanager.NewFuseManager(ctx, *fuseStoreAddr) | ||
| if err != nil { | ||
| log.G(ctx).WithError(err).Error("failed to configure manager server") | ||
| errCh <- err | ||
| } | ||
|
|
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| pb.RegisterFileSystemServiceServer(server, fm) | ||
|
|
||
| if err := server.Serve(l); err != nil { | ||
| log.G(ctx).WithError(err).Error("failed to serve fuse manager") | ||
| errCh <- err | ||
| } | ||
|
|
||
| err = fm.Close(ctx) | ||
| if err != nil { | ||
| log.G(ctx).WithError(err).Fatal("failed to close fusemanager") | ||
| } | ||
| } |
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