mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-01-19 02:48:24 +00:00
117 lines
2.4 KiB
Go
117 lines
2.4 KiB
Go
package mount
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import (
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"github.com/seaweedfs/seaweedfs/weed/filer"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
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"github.com/seaweedfs/seaweedfs/weed/util"
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"golang.org/x/sync/semaphore"
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"math"
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"os"
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"sync"
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)
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type FileHandleId uint64
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var IsDebug = true
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type FileHandle struct {
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fh FileHandleId
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counter int64
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entry *LockedEntry
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entryLock sync.Mutex
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inode uint64
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wfs *WFS
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// cache file has been written to
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dirtyMetadata bool
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dirtyPages *PageWriter
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entryViewCache []filer.VisibleInterval
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reader *filer.ChunkReadAt
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contentType string
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handle uint64
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orderedMutex *semaphore.Weighted
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isDeleted bool
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// for debugging
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mirrorFile *os.File
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}
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func newFileHandle(wfs *WFS, handleId FileHandleId, inode uint64, entry *filer_pb.Entry) *FileHandle {
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fh := &FileHandle{
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fh: handleId,
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counter: 1,
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inode: inode,
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wfs: wfs,
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orderedMutex: semaphore.NewWeighted(int64(math.MaxInt64)),
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}
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// dirtyPages: newContinuousDirtyPages(file, writeOnly),
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fh.dirtyPages = newPageWriter(fh, wfs.option.ChunkSizeLimit)
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if entry != nil {
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entry.Attributes.FileSize = filer.FileSize(entry)
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}
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fh.entry = &LockedEntry{
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Entry: entry,
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}
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if IsDebug {
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var err error
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fh.mirrorFile, err = os.OpenFile("/tmp/sw/"+entry.Name, os.O_RDWR|os.O_CREATE, 0600)
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if err != nil {
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println("failed to create mirror:", err.Error())
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}
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}
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return fh
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}
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func (fh *FileHandle) FullPath() util.FullPath {
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fp, _ := fh.wfs.inodeToPath.GetPath(fh.inode)
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return fp
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}
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func (fh *FileHandle) GetEntry() *filer_pb.Entry {
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return fh.entry.GetEntry()
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}
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func (fh *FileHandle) SetEntry(entry *filer_pb.Entry) {
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fh.entry.SetEntry(entry)
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}
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func (fh *FileHandle) UpdateEntry(fn func(entry *filer_pb.Entry)) *filer_pb.Entry {
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return fh.entry.UpdateEntry(fn)
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}
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func (fh *FileHandle) AddChunks(chunks []*filer_pb.FileChunk) {
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fh.entryLock.Lock()
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defer fh.entryLock.Unlock()
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if fh.entry == nil {
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return
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}
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fh.entry.AppendChunks(chunks)
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fh.entryViewCache = nil
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}
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func (fh *FileHandle) CloseReader() {
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if fh.reader != nil {
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_ = fh.reader.Close()
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fh.reader = nil
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}
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}
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func (fh *FileHandle) Release() {
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fh.entryLock.Lock()
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defer fh.entryLock.Unlock()
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glog.V(4).Infof("Release %s fh %d", fh.entry.Name, fh.handle)
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fh.dirtyPages.Destroy()
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fh.CloseReader()
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if IsDebug {
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fh.mirrorFile.Close()
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}
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}
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