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package filer
import ( "context" "fmt" "github.com/chrislusf/seaweedfs/weed/cluster" "github.com/chrislusf/seaweedfs/weed/pb" "github.com/chrislusf/seaweedfs/weed/pb/master_pb" "os" "strings" "time"
"google.golang.org/grpc"
"github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/pb/filer_pb" "github.com/chrislusf/seaweedfs/weed/util" "github.com/chrislusf/seaweedfs/weed/util/log_buffer" "github.com/chrislusf/seaweedfs/weed/wdclient")
const ( LogFlushInterval = time.Minute PaginationSize = 1024 FilerStoreId = "filer.store.id")
var ( OS_UID = uint32(os.Getuid()) OS_GID = uint32(os.Getgid()))
type Filer struct { Store VirtualFilerStore MasterClient *wdclient.MasterClient fileIdDeletionQueue *util.UnboundedQueue GrpcDialOption grpc.DialOption DirBucketsPath string FsyncBuckets []string buckets *FilerBuckets Cipher bool LocalMetaLogBuffer *log_buffer.LogBuffer metaLogCollection string metaLogReplication string MetaAggregator *MetaAggregator Signature int32 FilerConf *FilerConf RemoteStorage *FilerRemoteStorage UniqueFileId uint32}
func NewFiler(masters []pb.ServerAddress, grpcDialOption grpc.DialOption, filerHost pb.ServerAddress, collection string, replication string, dataCenter string, notifyFn func()) *Filer { f := &Filer{ MasterClient: wdclient.NewMasterClient(grpcDialOption, cluster.FilerType, filerHost, dataCenter, masters), fileIdDeletionQueue: util.NewUnboundedQueue(), GrpcDialOption: grpcDialOption, FilerConf: NewFilerConf(), RemoteStorage: NewFilerRemoteStorage(), UniqueFileId: uint32(util.RandomInt32()), } f.LocalMetaLogBuffer = log_buffer.NewLogBuffer("local", LogFlushInterval, f.logFlushFunc, notifyFn) f.metaLogCollection = collection f.metaLogReplication = replication
go f.loopProcessingDeletion()
return f}
func (f *Filer) AggregateFromPeers(self pb.ServerAddress) {
f.MetaAggregator = NewMetaAggregator(f, self, f.GrpcDialOption) f.MasterClient.OnPeerUpdate = f.MetaAggregator.OnPeerUpdate
for _, peerUpdate := range f.ListExistingPeerUpdates() { f.MetaAggregator.OnPeerUpdate(peerUpdate) }
}
func (f *Filer) ListExistingPeerUpdates() (existingNodes []*master_pb.ClusterNodeUpdate){
if grpcErr := pb.WithMasterClient(f.MasterClient.GetMaster(), f.GrpcDialOption, func(client master_pb.SeaweedClient) error { resp, err := client.ListClusterNodes(context.Background(), &master_pb.ListClusterNodesRequest{ ClientType: cluster.FilerType, })
glog.V(0).Infof("the cluster has %d filers\n", len(resp.ClusterNodes)) for _, node := range resp.ClusterNodes { existingNodes = append(existingNodes, &master_pb.ClusterNodeUpdate{ NodeType: cluster.FilerType, Address: node.Address, IsLeader: node.IsLeader, IsAdd: true, }) } return err }); grpcErr != nil { glog.V(0).Infof("connect to %s: %v", f.MasterClient.GetMaster(), grpcErr) } return}
func (f *Filer) SetStore(store FilerStore) { f.Store = NewFilerStoreWrapper(store)
f.setOrLoadFilerStoreSignature(store)
}
func (f *Filer) setOrLoadFilerStoreSignature(store FilerStore) { storeIdBytes, err := store.KvGet(context.Background(), []byte(FilerStoreId)) if err == ErrKvNotFound || err == nil && len(storeIdBytes) == 0 { f.Signature = util.RandomInt32() storeIdBytes = make([]byte, 4) util.Uint32toBytes(storeIdBytes, uint32(f.Signature)) if err = store.KvPut(context.Background(), []byte(FilerStoreId), storeIdBytes); err != nil { glog.Fatalf("set %s=%d : %v", FilerStoreId, f.Signature, err) } glog.V(0).Infof("create %s to %d", FilerStoreId, f.Signature) } else if err == nil && len(storeIdBytes) == 4 { f.Signature = int32(util.BytesToUint32(storeIdBytes)) glog.V(0).Infof("existing %s = %d", FilerStoreId, f.Signature) } else { glog.Fatalf("read %v=%v : %v", FilerStoreId, string(storeIdBytes), err) }}
func (f *Filer) GetStore() (store FilerStore) { return f.Store}
func (fs *Filer) GetMaster() pb.ServerAddress { return fs.MasterClient.GetMaster()}
func (fs *Filer) KeepMasterClientConnected() { fs.MasterClient.KeepConnectedToMaster()}
func (f *Filer) BeginTransaction(ctx context.Context) (context.Context, error) { return f.Store.BeginTransaction(ctx)}
func (f *Filer) CommitTransaction(ctx context.Context) error { return f.Store.CommitTransaction(ctx)}
func (f *Filer) RollbackTransaction(ctx context.Context) error { return f.Store.RollbackTransaction(ctx)}
func (f *Filer) CreateEntry(ctx context.Context, entry *Entry, o_excl bool, isFromOtherCluster bool, signatures []int32) error {
if string(entry.FullPath) == "/" { return nil }
oldEntry, _ := f.FindEntry(ctx, entry.FullPath)
/* if !hasWritePermission(lastDirectoryEntry, entry) { glog.V(0).Infof("directory %s: %v, entry: uid=%d gid=%d", lastDirectoryEntry.FullPath, lastDirectoryEntry.Attr, entry.Uid, entry.Gid) return fmt.Errorf("no write permission in folder %v", lastDirectoryEntry.FullPath) } */
if oldEntry == nil {
dirParts := strings.Split(string(entry.FullPath), "/") if err := f.ensureParentDirecotryEntry(ctx, entry, dirParts, len(dirParts)-1, isFromOtherCluster); err != nil { return err }
glog.V(4).Infof("InsertEntry %s: new entry: %v", entry.FullPath, entry.Name()) if err := f.Store.InsertEntry(ctx, entry); err != nil { glog.Errorf("insert entry %s: %v", entry.FullPath, err) return fmt.Errorf("insert entry %s: %v", entry.FullPath, err) } } else { if o_excl { glog.V(3).Infof("EEXIST: entry %s already exists", entry.FullPath) return fmt.Errorf("EEXIST: entry %s already exists", entry.FullPath) } glog.V(4).Infof("UpdateEntry %s: old entry: %v", entry.FullPath, oldEntry.Name()) if err := f.UpdateEntry(ctx, oldEntry, entry); err != nil { glog.Errorf("update entry %s: %v", entry.FullPath, err) return fmt.Errorf("update entry %s: %v", entry.FullPath, err) } }
f.maybeAddBucket(entry) f.NotifyUpdateEvent(ctx, oldEntry, entry, true, isFromOtherCluster, signatures)
f.deleteChunksIfNotNew(oldEntry, entry)
glog.V(4).Infof("CreateEntry %s: created", entry.FullPath)
return nil}
func (f *Filer) ensureParentDirecotryEntry(ctx context.Context, entry *Entry, dirParts []string, level int, isFromOtherCluster bool) (err error) {
if level == 0 { return nil }
dirPath := "/" + util.Join(dirParts[:level]...) // fmt.Printf("%d directory: %+v\n", i, dirPath)
// check the store directly
glog.V(4).Infof("find uncached directory: %s", dirPath) dirEntry, _ := f.FindEntry(ctx, util.FullPath(dirPath))
// no such existing directory
if dirEntry == nil {
// ensure parent directory
if err = f.ensureParentDirecotryEntry(ctx, entry, dirParts, level-1, isFromOtherCluster); err != nil { return err }
// create the directory
now := time.Now()
dirEntry = &Entry{ FullPath: util.FullPath(dirPath), Attr: Attr{ Mtime: now, Crtime: now, Mode: os.ModeDir | entry.Mode | 0111, Uid: entry.Uid, Gid: entry.Gid, Collection: entry.Collection, Replication: entry.Replication, UserName: entry.UserName, GroupNames: entry.GroupNames, }, }
glog.V(2).Infof("create directory: %s %v", dirPath, dirEntry.Mode) mkdirErr := f.Store.InsertEntry(ctx, dirEntry) if mkdirErr != nil { if _, err := f.FindEntry(ctx, util.FullPath(dirPath)); err == filer_pb.ErrNotFound { glog.V(3).Infof("mkdir %s: %v", dirPath, mkdirErr) return fmt.Errorf("mkdir %s: %v", dirPath, mkdirErr) } } else { f.maybeAddBucket(dirEntry) f.NotifyUpdateEvent(ctx, nil, dirEntry, false, isFromOtherCluster, nil) }
} else if !dirEntry.IsDirectory() { glog.Errorf("CreateEntry %s: %s should be a directory", entry.FullPath, dirPath) return fmt.Errorf("%s is a file", dirPath) }
return nil}
func (f *Filer) UpdateEntry(ctx context.Context, oldEntry, entry *Entry) (err error) { if oldEntry != nil { entry.Attr.Crtime = oldEntry.Attr.Crtime if oldEntry.IsDirectory() && !entry.IsDirectory() { glog.Errorf("existing %s is a directory", oldEntry.FullPath) return fmt.Errorf("existing %s is a directory", oldEntry.FullPath) } if !oldEntry.IsDirectory() && entry.IsDirectory() { glog.Errorf("existing %s is a file", oldEntry.FullPath) return fmt.Errorf("existing %s is a file", oldEntry.FullPath) } } return f.Store.UpdateEntry(ctx, entry)}
var ( Root = &Entry{ FullPath: "/", Attr: Attr{ Mtime: time.Now(), Crtime: time.Now(), Mode: os.ModeDir | 0755, Uid: OS_UID, Gid: OS_GID, }, })
func (f *Filer) FindEntry(ctx context.Context, p util.FullPath) (entry *Entry, err error) {
if string(p) == "/" { return Root, nil } entry, err = f.Store.FindEntry(ctx, p) if entry != nil && entry.TtlSec > 0 { if entry.Crtime.Add(time.Duration(entry.TtlSec) * time.Second).Before(time.Now()) { f.Store.DeleteOneEntry(ctx, entry) return nil, filer_pb.ErrNotFound } } return
}
func (f *Filer) doListDirectoryEntries(ctx context.Context, p util.FullPath, startFileName string, inclusive bool, limit int64, prefix string, eachEntryFunc ListEachEntryFunc) (expiredCount int64, lastFileName string, err error) { lastFileName, err = f.Store.ListDirectoryPrefixedEntries(ctx, p, startFileName, inclusive, limit, prefix, func(entry *Entry) bool { if entry.TtlSec > 0 { if entry.Crtime.Add(time.Duration(entry.TtlSec) * time.Second).Before(time.Now()) { f.Store.DeleteOneEntry(ctx, entry) expiredCount++ return true } } return eachEntryFunc(entry) }) if err != nil { return expiredCount, lastFileName, err } return}
func (f *Filer) Shutdown() { f.LocalMetaLogBuffer.Shutdown() f.Store.Shutdown()}
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