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320 lines
9.2 KiB
320 lines
9.2 KiB
package filer
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import (
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"context"
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"fmt"
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"os"
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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 * 256
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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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FsyncBuckets []string
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buckets *FilerBuckets
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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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}
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func NewFiler(masters []string, grpcDialOption grpc.DialOption,
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filerHost string, filerGrpcPort uint32, collection string, replication string, dataCenter string, notifyFn func()) *Filer {
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f := &Filer{
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MasterClient: wdclient.NewMasterClient(grpcDialOption, "filer", filerHost, filerGrpcPort, 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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}
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f.LocalMetaLogBuffer = log_buffer.NewLogBuffer(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) AggregateFromPeers(self string, filers []string) {
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// set peers
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found := false
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for _, peer := range filers {
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if peer == self {
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found = true
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}
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}
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if !found {
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filers = append(filers, self)
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}
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f.MetaAggregator = NewMetaAggregator(filers, f.GrpcDialOption)
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f.MetaAggregator.StartLoopSubscribe(f, self)
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}
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func (f *Filer) SetStore(store FilerStore) {
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f.Store = NewFilerStoreWrapper(store)
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f.setOrLoadFilerStoreSignature(store)
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}
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func (f *Filer) setOrLoadFilerStoreSignature(store FilerStore) {
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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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} 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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}
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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() string {
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return fs.MasterClient.GetMaster()
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}
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func (fs *Filer) KeepConnectedToMaster() {
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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) error {
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if string(entry.FullPath) == "/" {
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return nil
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}
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dirParts := strings.Split(string(entry.FullPath), "/")
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// fmt.Printf("directory parts: %+v\n", dirParts)
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var lastDirectoryEntry *Entry
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for i := 1; i < len(dirParts); i++ {
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dirPath := "/" + util.Join(dirParts[:i]...)
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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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// 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 | 0110,
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Uid: entry.Uid,
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Gid: entry.Gid,
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Collection: entry.Collection,
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Replication: entry.Replication,
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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.maybeAddBucket(dirEntry)
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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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// remember the direct parent directory entry
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if i == len(dirParts)-1 {
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lastDirectoryEntry = dirEntry
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}
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}
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if lastDirectoryEntry == nil {
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glog.Errorf("CreateEntry %s: lastDirectoryEntry is nil", entry.FullPath)
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return fmt.Errorf("parent folder not found: %v", entry.FullPath)
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}
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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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oldEntry, _ := f.FindEntry(ctx, entry.FullPath)
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if oldEntry == nil {
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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.maybeAddBucket(entry)
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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) 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", entry.FullPath)
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return fmt.Errorf("existing %s is a directory", entry.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", entry.FullPath)
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return fmt.Errorf("existing %s is a file", entry.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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func (f *Filer) FindEntry(ctx context.Context, p util.FullPath) (entry *Entry, err error) {
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now := time.Now()
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if string(p) == "/" {
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return &Entry{
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FullPath: p,
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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 | 0755,
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Uid: OS_UID,
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Gid: OS_GID,
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},
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}, 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) ListDirectoryEntries(ctx context.Context, p util.FullPath, startFileName string, inclusive bool, limit int, prefix string) ([]*Entry, error) {
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if strings.HasSuffix(string(p), "/") && len(p) > 1 {
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p = p[0 : len(p)-1]
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}
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var makeupEntries []*Entry
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entries, expiredCount, lastFileName, err := f.doListDirectoryEntries(ctx, p, startFileName, inclusive, limit, prefix)
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for expiredCount > 0 && err == nil {
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makeupEntries, expiredCount, lastFileName, err = f.doListDirectoryEntries(ctx, p, lastFileName, false, expiredCount, prefix)
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if err == nil {
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entries = append(entries, makeupEntries...)
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}
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}
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return entries, err
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}
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func (f *Filer) doListDirectoryEntries(ctx context.Context, p util.FullPath, startFileName string, inclusive bool, limit int, prefix string) (entries []*Entry, expiredCount int, lastFileName string, err error) {
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listedEntries, listErr := f.Store.ListDirectoryPrefixedEntries(ctx, p, startFileName, inclusive, limit, prefix)
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if listErr != nil {
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return listedEntries, expiredCount, "", listErr
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}
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for _, entry := range listedEntries {
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lastFileName = entry.Name()
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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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continue
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}
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}
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entries = append(entries, entry)
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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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