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