mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-01-19 02:48:24 +00:00
368 lines
13 KiB
Go
368 lines
13 KiB
Go
package command
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import (
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"fmt"
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"github.com/chrislusf/seaweedfs/weed/filer"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/pb"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"github.com/chrislusf/seaweedfs/weed/pb/remote_pb"
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"github.com/chrislusf/seaweedfs/weed/remote_storage"
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"github.com/chrislusf/seaweedfs/weed/replication/source"
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"github.com/chrislusf/seaweedfs/weed/util"
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"github.com/golang/protobuf/proto"
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"math"
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"math/rand"
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"strings"
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"time"
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)
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func (option *RemoteSyncOptions) followBucketUpdatesAndUploadToRemote(filerSource *source.FilerSource) error {
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// read filer remote storage mount mappings
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if detectErr := option.collectRemoteStorageConf(); detectErr != nil {
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return fmt.Errorf("read mount info: %v", detectErr)
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}
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eachEntryFunc, err := option.makeBucketedEventProcessor(filerSource)
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if err != nil {
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return err
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}
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processEventFnWithOffset := pb.AddOffsetFunc(eachEntryFunc, 3*time.Second, func(counter int64, lastTsNs int64) error {
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lastTime := time.Unix(0, lastTsNs)
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glog.V(0).Infof("remote sync %s progressed to %v %0.2f/sec", *option.filerAddress, lastTime, float64(counter)/float64(3))
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return remote_storage.SetSyncOffset(option.grpcDialOption, *option.filerAddress, option.bucketsDir, lastTsNs)
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})
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lastOffsetTs := collectLastSyncOffset(option, option.bucketsDir)
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return pb.FollowMetadata(*option.filerAddress, option.grpcDialOption, "filer.remote.sync",
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option.bucketsDir, []string{filer.DirectoryEtcRemote}, lastOffsetTs.UnixNano(), 0, processEventFnWithOffset, false)
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}
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func (option *RemoteSyncOptions) makeBucketedEventProcessor(filerSource *source.FilerSource) (pb.ProcessMetadataFunc, error) {
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handleCreateBucket := func(entry *filer_pb.Entry) error {
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if !entry.IsDirectory {
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return nil
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}
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if entry.RemoteEntry != nil {
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// this directory is imported from "remote.mount.buckets" or "remote.mount"
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return nil
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}
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remoteConf, found := option.remoteConfs[*option.createBucketAt]
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if !found {
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return fmt.Errorf("un-configured remote storage %s", *option.createBucketAt)
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}
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client, err := remote_storage.GetRemoteStorage(remoteConf)
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if err != nil {
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return err
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}
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bucketName := strings.ToLower(entry.Name)
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if *option.createBucketRandomSuffix {
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// https://docs.aws.amazon.com/AmazonS3/latest/userguide/bucketnamingrules.html
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if len(bucketName)+5 > 63 {
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bucketName = bucketName[:58]
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}
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bucketName = fmt.Sprintf("%s-%4d", bucketName, rand.Uint32()%10000)
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}
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glog.V(0).Infof("create bucket %s", bucketName)
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if err := client.CreateBucket(bucketName); err != nil {
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return err
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}
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bucketPath := util.FullPath(option.bucketsDir).Child(entry.Name)
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remoteLocation := &remote_pb.RemoteStorageLocation{
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Name: *option.createBucketAt,
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Bucket: bucketName,
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Path: "/",
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}
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// need to add new mapping here before getting upates from metadata tailing
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option.mappings.Mappings[string(bucketPath)] = remoteLocation
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return filer.InsertMountMapping(option, string(bucketPath), remoteLocation)
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}
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handleDeleteBucket := func(entry *filer_pb.Entry) error {
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if !entry.IsDirectory {
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return nil
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}
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client, remoteStorageMountLocation, err := option.findRemoteStorageClient(entry.Name)
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if err != nil {
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return err
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}
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glog.V(0).Infof("delete remote bucket %s", remoteStorageMountLocation.Bucket)
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if err := client.DeleteBucket(remoteStorageMountLocation.Bucket); err != nil {
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return err
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}
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bucketPath := util.FullPath(option.bucketsDir).Child(entry.Name)
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return filer.DeleteMountMapping(option, string(bucketPath))
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}
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handleEtcRemoteChanges := func(resp *filer_pb.SubscribeMetadataResponse) error {
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message := resp.EventNotification
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if message.NewEntry != nil {
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// update
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if message.NewEntry.Name == filer.REMOTE_STORAGE_MOUNT_FILE {
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newMappings, readErr := filer.UnmarshalRemoteStorageMappings(message.NewEntry.Content)
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if readErr != nil {
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return fmt.Errorf("unmarshal mappings: %v", readErr)
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}
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option.mappings = newMappings
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}
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if strings.HasSuffix(message.NewEntry.Name, filer.REMOTE_STORAGE_CONF_SUFFIX) {
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conf := &remote_pb.RemoteConf{}
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if err := proto.Unmarshal(message.NewEntry.Content, conf); err != nil {
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return fmt.Errorf("unmarshal %s/%s: %v", filer.DirectoryEtcRemote, message.NewEntry.Name, err)
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}
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option.remoteConfs[conf.Name] = conf
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}
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} else if message.OldEntry != nil {
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// deletion
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if strings.HasSuffix(message.OldEntry.Name, filer.REMOTE_STORAGE_CONF_SUFFIX) {
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conf := &remote_pb.RemoteConf{}
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if err := proto.Unmarshal(message.OldEntry.Content, conf); err != nil {
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return fmt.Errorf("unmarshal %s/%s: %v", filer.DirectoryEtcRemote, message.OldEntry.Name, err)
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}
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delete(option.remoteConfs, conf.Name)
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}
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}
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return nil
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}
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eachEntryFunc := func(resp *filer_pb.SubscribeMetadataResponse) error {
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message := resp.EventNotification
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if strings.HasPrefix(resp.Directory, filer.DirectoryEtcRemote) {
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return handleEtcRemoteChanges(resp)
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}
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if message.OldEntry == nil && message.NewEntry == nil {
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return nil
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}
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if message.OldEntry == nil && message.NewEntry != nil {
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if message.NewParentPath == option.bucketsDir {
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return handleCreateBucket(message.NewEntry)
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}
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if !filer.HasData(message.NewEntry) {
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return nil
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}
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bucket, remoteStorageMountLocation, remoteStorage, ok := option.detectBucketInfo(message.NewParentPath)
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if !ok {
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return nil
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}
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client, err := remote_storage.GetRemoteStorage(remoteStorage)
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if err != nil {
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return err
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}
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glog.V(2).Infof("create: %+v", resp)
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if !shouldSendToRemote(message.NewEntry) {
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glog.V(2).Infof("skipping creating: %+v", resp)
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return nil
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}
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dest := toRemoteStorageLocation(bucket, util.NewFullPath(message.NewParentPath, message.NewEntry.Name), remoteStorageMountLocation)
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if message.NewEntry.IsDirectory {
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glog.V(0).Infof("mkdir %s", remote_storage.FormatLocation(dest))
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return client.WriteDirectory(dest, message.NewEntry)
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}
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glog.V(0).Infof("create %s", remote_storage.FormatLocation(dest))
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reader := filer.NewFileReader(filerSource, message.NewEntry)
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remoteEntry, writeErr := client.WriteFile(dest, message.NewEntry, reader)
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if writeErr != nil {
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return writeErr
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}
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return updateLocalEntry(&remoteSyncOptions, message.NewParentPath, message.NewEntry, remoteEntry)
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}
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if message.OldEntry != nil && message.NewEntry == nil {
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if resp.Directory == option.bucketsDir {
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return handleDeleteBucket(message.OldEntry)
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}
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bucket, remoteStorageMountLocation, remoteStorage, ok := option.detectBucketInfo(resp.Directory)
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if !ok {
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return nil
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}
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client, err := remote_storage.GetRemoteStorage(remoteStorage)
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if err != nil {
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return err
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}
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glog.V(2).Infof("delete: %+v", resp)
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dest := toRemoteStorageLocation(bucket, util.NewFullPath(resp.Directory, message.OldEntry.Name), remoteStorageMountLocation)
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if message.OldEntry.IsDirectory {
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glog.V(0).Infof("rmdir %s", remote_storage.FormatLocation(dest))
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return client.RemoveDirectory(dest)
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}
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glog.V(0).Infof("delete %s", remote_storage.FormatLocation(dest))
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return client.DeleteFile(dest)
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}
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if message.OldEntry != nil && message.NewEntry != nil {
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if resp.Directory == option.bucketsDir {
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if message.NewParentPath == option.bucketsDir {
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if message.OldEntry.Name == message.NewEntry.Name {
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return nil
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}
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if err := handleCreateBucket(message.NewEntry); err != nil {
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return err
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}
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if err := handleDeleteBucket(message.OldEntry); err != nil {
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return err
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}
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}
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}
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oldBucket, oldRemoteStorageMountLocation, oldRemoteStorage, oldOk := option.detectBucketInfo(resp.Directory)
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newBucket, newRemoteStorageMountLocation, newRemoteStorage, newOk := option.detectBucketInfo(message.NewParentPath)
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if oldOk && newOk {
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if !shouldSendToRemote(message.NewEntry) {
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glog.V(2).Infof("skipping updating: %+v", resp)
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return nil
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}
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client, err := remote_storage.GetRemoteStorage(oldRemoteStorage)
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if err != nil {
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return err
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}
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if resp.Directory == message.NewParentPath && message.OldEntry.Name == message.NewEntry.Name {
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// update the same entry
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if message.NewEntry.IsDirectory {
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// update directory property
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return nil
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}
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if filer.IsSameData(message.OldEntry, message.NewEntry) {
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glog.V(2).Infof("update meta: %+v", resp)
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oldDest := toRemoteStorageLocation(oldBucket, util.NewFullPath(resp.Directory, message.OldEntry.Name), oldRemoteStorageMountLocation)
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return client.UpdateFileMetadata(oldDest, message.OldEntry, message.NewEntry)
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} else {
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newDest := toRemoteStorageLocation(newBucket, util.NewFullPath(message.NewParentPath, message.NewEntry.Name), newRemoteStorageMountLocation)
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reader := filer.NewFileReader(filerSource, message.NewEntry)
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glog.V(0).Infof("create %s", remote_storage.FormatLocation(newDest))
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remoteEntry, writeErr := client.WriteFile(newDest, message.NewEntry, reader)
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if writeErr != nil {
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return writeErr
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}
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return updateLocalEntry(&remoteSyncOptions, message.NewParentPath, message.NewEntry, remoteEntry)
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}
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}
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}
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// the following is entry rename
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if oldOk {
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client, err := remote_storage.GetRemoteStorage(oldRemoteStorage)
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if err != nil {
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return err
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}
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oldDest := toRemoteStorageLocation(oldBucket, util.NewFullPath(resp.Directory, message.OldEntry.Name), oldRemoteStorageMountLocation)
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if message.OldEntry.IsDirectory {
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return client.RemoveDirectory(oldDest)
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}
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glog.V(0).Infof("delete %s", remote_storage.FormatLocation(oldDest))
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if err := client.DeleteFile(oldDest); err != nil {
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return err
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}
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}
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if newOk {
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if !shouldSendToRemote(message.NewEntry) {
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glog.V(2).Infof("skipping updating: %+v", resp)
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return nil
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}
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client, err := remote_storage.GetRemoteStorage(newRemoteStorage)
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if err != nil {
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return err
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}
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newDest := toRemoteStorageLocation(newBucket, util.NewFullPath(message.NewParentPath, message.NewEntry.Name), newRemoteStorageMountLocation)
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if message.NewEntry.IsDirectory {
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return client.WriteDirectory(newDest, message.NewEntry)
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}
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reader := filer.NewFileReader(filerSource, message.NewEntry)
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glog.V(0).Infof("create %s", remote_storage.FormatLocation(newDest))
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remoteEntry, writeErr := client.WriteFile(newDest, message.NewEntry, reader)
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if writeErr != nil {
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return writeErr
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}
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return updateLocalEntry(&remoteSyncOptions, message.NewParentPath, message.NewEntry, remoteEntry)
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}
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}
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return nil
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}
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return eachEntryFunc, nil
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}
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func (option *RemoteSyncOptions) findRemoteStorageClient(bucketName string) (client remote_storage.RemoteStorageClient, remoteStorageMountLocation *remote_pb.RemoteStorageLocation, err error) {
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bucket := util.FullPath(option.bucketsDir).Child(bucketName)
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var isMounted bool
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remoteStorageMountLocation, isMounted = option.mappings.Mappings[string(bucket)]
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if !isMounted {
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return nil, remoteStorageMountLocation, fmt.Errorf("%s is not mounted", bucket)
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}
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remoteConf, hasClient := option.remoteConfs[remoteStorageMountLocation.Name]
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if !hasClient {
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return nil, remoteStorageMountLocation, fmt.Errorf("%s mounted to un-configured %+v", bucket, remoteStorageMountLocation)
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}
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client, err = remote_storage.GetRemoteStorage(remoteConf)
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if err != nil {
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return nil, remoteStorageMountLocation, err
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}
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return client, remoteStorageMountLocation, nil
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}
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func (option *RemoteSyncOptions) detectBucketInfo(actualDir string) (bucket util.FullPath, remoteStorageMountLocation *remote_pb.RemoteStorageLocation, remoteConf *remote_pb.RemoteConf, ok bool) {
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bucket, ok = extractBucketPath(option.bucketsDir, actualDir)
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if !ok {
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return "", nil, nil, false
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}
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var isMounted bool
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remoteStorageMountLocation, isMounted = option.mappings.Mappings[string(bucket)]
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if !isMounted {
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glog.Warningf("%s is not mounted", bucket)
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return "", nil, nil, false
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}
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var hasClient bool
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remoteConf, hasClient = option.remoteConfs[remoteStorageMountLocation.Name]
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if !hasClient {
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glog.Warningf("%s mounted to un-configured %+v", bucket, remoteStorageMountLocation)
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return "", nil, nil, false
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}
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return bucket, remoteStorageMountLocation, remoteConf, true
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}
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func extractBucketPath(bucketsDir, dir string) (util.FullPath, bool) {
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if !strings.HasPrefix(dir, bucketsDir+"/") {
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return "", false
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}
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parts := strings.SplitN(dir[len(bucketsDir)+1:], "/", 2)
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return util.FullPath(bucketsDir).Child(parts[0]), true
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}
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func (option *RemoteSyncOptions) collectRemoteStorageConf() (err error) {
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if mappings, err := filer.ReadMountMappings(option.grpcDialOption, *option.filerAddress); err != nil {
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return err
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} else {
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option.mappings = mappings
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}
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option.remoteConfs = make(map[string]*remote_pb.RemoteConf)
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err = filer_pb.List(option, filer.DirectoryEtcRemote, "", func(entry *filer_pb.Entry, isLast bool) error {
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if !strings.HasSuffix(entry.Name, filer.REMOTE_STORAGE_CONF_SUFFIX) {
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return nil
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}
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conf := &remote_pb.RemoteConf{}
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if err := proto.Unmarshal(entry.Content, conf); err != nil {
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return fmt.Errorf("unmarshal %s/%s: %v", filer.DirectoryEtcRemote, entry.Name, err)
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}
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option.remoteConfs[conf.Name] = conf
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return nil
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}, "", false, math.MaxUint32)
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return
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}
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