package filersink import ( "context" "fmt" "github.com/chrislusf/seaweedfs/weed/pb" "github.com/chrislusf/seaweedfs/weed/wdclient" "google.golang.org/grpc" "github.com/chrislusf/seaweedfs/weed/security" "github.com/chrislusf/seaweedfs/weed/filer" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/pb/filer_pb" "github.com/chrislusf/seaweedfs/weed/replication/sink" "github.com/chrislusf/seaweedfs/weed/replication/source" "github.com/chrislusf/seaweedfs/weed/util" ) type FilerSink struct { filerSource *source.FilerSource grpcAddress string dir string replication string collection string ttlSec int32 dataCenter string grpcDialOption grpc.DialOption address string writeChunkByFiler bool } func init() { sink.Sinks = append(sink.Sinks, &FilerSink{}) } func (fs *FilerSink) GetName() string { return "filer" } func (fs *FilerSink) GetSinkToDirectory() string { return fs.dir } func (fs *FilerSink) Initialize(configuration util.Configuration, prefix string) error { return fs.DoInitialize( "", configuration.GetString(prefix+"grpcAddress"), configuration.GetString(prefix+"directory"), configuration.GetString(prefix+"replication"), configuration.GetString(prefix+"collection"), configuration.GetInt(prefix+"ttlSec"), security.LoadClientTLS(util.GetViper(), "grpc.client"), false) } func (fs *FilerSink) SetSourceFiler(s *source.FilerSource) { fs.filerSource = s } func (fs *FilerSink) DoInitialize(address, grpcAddress string, dir string, replication string, collection string, ttlSec int, grpcDialOption grpc.DialOption, writeChunkByFiler bool) (err error) { fs.address = address if fs.address == "" { fs.address = pb.GrpcAddressToServerAddress(grpcAddress) } fs.grpcAddress = grpcAddress fs.dir = dir fs.replication = replication fs.collection = collection fs.ttlSec = int32(ttlSec) fs.grpcDialOption = grpcDialOption fs.writeChunkByFiler = writeChunkByFiler return nil } func (fs *FilerSink) DeleteEntry(key string, isDirectory, deleteIncludeChunks bool, signatures []int32) error { dir, name := util.FullPath(key).DirAndName() glog.V(4).Infof("delete entry: %v", key) err := filer_pb.Remove(fs, dir, name, deleteIncludeChunks, true, true, true, signatures) if err != nil { glog.V(0).Infof("delete entry %s: %v", key, err) return fmt.Errorf("delete entry %s: %v", key, err) } return nil } func (fs *FilerSink) CreateEntry(key string, entry *filer_pb.Entry, signatures []int32) error { return fs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error { dir, name := util.FullPath(key).DirAndName() // look up existing entry lookupRequest := &filer_pb.LookupDirectoryEntryRequest{ Directory: dir, Name: name, } glog.V(1).Infof("lookup: %v", lookupRequest) if resp, err := filer_pb.LookupEntry(client, lookupRequest); err == nil { if filer.ETag(resp.Entry) == filer.ETag(entry) { glog.V(3).Infof("already replicated %s", key) return nil } } replicatedChunks, err := fs.replicateChunks(entry.Chunks, key) if err != nil { // only warning here since the source chunk may have been deleted already glog.Warningf("replicate entry chunks %s: %v", key, err) } glog.V(4).Infof("replicated %s %+v ===> %+v", key, entry.Chunks, replicatedChunks) request := &filer_pb.CreateEntryRequest{ Directory: dir, Entry: &filer_pb.Entry{ Name: name, IsDirectory: entry.IsDirectory, Attributes: entry.Attributes, Chunks: replicatedChunks, Content: entry.Content, }, IsFromOtherCluster: true, Signatures: signatures, } glog.V(3).Infof("create: %v", request) if err := filer_pb.CreateEntry(client, request); err != nil { glog.V(0).Infof("create entry %s: %v", key, err) return fmt.Errorf("create entry %s: %v", key, err) } return nil }) } func (fs *FilerSink) UpdateEntry(key string, oldEntry *filer_pb.Entry, newParentPath string, newEntry *filer_pb.Entry, deleteIncludeChunks bool, signatures []int32) (foundExistingEntry bool, err error) { dir, name := util.FullPath(key).DirAndName() // read existing entry var existingEntry *filer_pb.Entry err = fs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error { request := &filer_pb.LookupDirectoryEntryRequest{ Directory: dir, Name: name, } glog.V(4).Infof("lookup entry: %v", request) resp, err := filer_pb.LookupEntry(client, request) if err != nil { glog.V(0).Infof("lookup %s: %v", key, err) return err } existingEntry = resp.Entry return nil }) if err != nil { return false, fmt.Errorf("lookup %s: %v", key, err) } glog.V(4).Infof("oldEntry %+v, newEntry %+v, existingEntry: %+v", oldEntry, newEntry, existingEntry) if existingEntry.Attributes.Mtime > newEntry.Attributes.Mtime { // skip if already changed // this usually happens when the messages are not ordered glog.V(2).Infof("late updates %s", key) } else if filer.ETag(newEntry) == filer.ETag(existingEntry) { // skip if no change // this usually happens when retrying the replication glog.V(3).Infof("already replicated %s", key) } else { // find out what changed deletedChunks, newChunks, err := compareChunks(filer.LookupFn(fs), oldEntry, newEntry) if err != nil { return true, fmt.Errorf("replicte %s compare chunks error: %v", key, err) } // delete the chunks that are deleted from the source if deleteIncludeChunks { // remove the deleted chunks. Actual data deletion happens in filer UpdateEntry FindUnusedFileChunks existingEntry.Chunks = filer.DoMinusChunks(existingEntry.Chunks, deletedChunks) } // replicate the chunks that are new in the source replicatedChunks, err := fs.replicateChunks(newChunks, key) if err != nil { return true, fmt.Errorf("replicte %s chunks error: %v", key, err) } existingEntry.Chunks = append(existingEntry.Chunks, replicatedChunks...) } // save updated meta data return true, fs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error { request := &filer_pb.UpdateEntryRequest{ Directory: newParentPath, Entry: existingEntry, IsFromOtherCluster: true, Signatures: signatures, } if _, err := client.UpdateEntry(context.Background(), request); err != nil { return fmt.Errorf("update existingEntry %s: %v", key, err) } return nil }) } func compareChunks(lookupFileIdFn wdclient.LookupFileIdFunctionType, oldEntry, newEntry *filer_pb.Entry) (deletedChunks, newChunks []*filer_pb.FileChunk, err error) { aData, aMeta, aErr := filer.ResolveChunkManifest(lookupFileIdFn, oldEntry.Chunks) if aErr != nil { return nil, nil, aErr } bData, bMeta, bErr := filer.ResolveChunkManifest(lookupFileIdFn, newEntry.Chunks) if bErr != nil { return nil, nil, bErr } deletedChunks = append(deletedChunks, filer.DoMinusChunks(aData, bData)...) deletedChunks = append(deletedChunks, filer.DoMinusChunks(aMeta, bMeta)...) newChunks = append(newChunks, filer.DoMinusChunks(bData, aData)...) newChunks = append(newChunks, filer.DoMinusChunks(bMeta, aMeta)...) return }