d4566d4aaa
* compare chunks by timestamp * fix slab clearing error * fix test compilation * move oldest chunk to sealed, instead of by fullness * lock on fh.entryViewCache * remove verbose logs * revert slat clearing * less logs * less logs * track write and read by timestamp * remove useless logic * add entry lock on file handle release * use mem chunk only, swap file chunk has problems * comment out code that maybe used later * add debug mode to compare data read and write * more efficient readResolvedChunks with linked list * small optimization * fix test compilation * minor fix on writer * add SeparateGarbageChunks * group chunks into sections * turn off debug mode * fix tests * fix tests * tmp enable swap file chunk * Revert "tmp enable swap file chunk" This reverts commit 985137ec472924e4815f258189f6ca9f2168a0a7. * simple refactoring * simple refactoring * do not re-use swap file chunk. Sealed chunks should not be re-used. * comment out debugging facilities * either mem chunk or swap file chunk is fine now * remove orderedMutex as *semaphore.Weighted not found impactful * optimize size calculation for changing large files * optimize performance to avoid going through the long list of chunks * still problems with swap file chunk * rename * tiny optimization * swap file chunk save only successfully read data * fix * enable both mem and swap file chunk * resolve chunks with range * rename * fix chunk interval list * also change file handle chunk group when adding chunks * pick in-active chunk with time-decayed counter * fix compilation * avoid nil with empty fh.entry * refactoring * rename * rename * refactor visible intervals to *list.List * refactor chunkViews to *list.List * add IntervalList for generic interval list * change visible interval to use IntervalList in generics * cahnge chunkViews to *IntervalList[*ChunkView] * use NewFileChunkSection to create * rename variables * refactor * fix renaming leftover * renaming * renaming * add insert interval * interval list adds lock * incrementally add chunks to readers Fixes: 1. set start and stop offset for the value object 2. clone the value object 3. use pointer instead of copy-by-value when passing to interval.Value 4. use insert interval since adding chunk could be out of order * fix tests compilation * fix tests compilation
121 lines
2.6 KiB
Go
121 lines
2.6 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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"os"
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"sync"
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)
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type FileHandleId uint64
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var IsDebugFileReadWrite = false
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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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entryChunkGroup *filer.ChunkGroup
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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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reader *filer.ChunkReadAt
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contentType string
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handle uint64
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sync.Mutex
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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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}
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// dirtyPages: newContinuousDirtyPages(file, writeOnly),
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fh.dirtyPages = newPageWriter(fh, wfs.option.ChunkSizeLimit)
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fh.entry = &LockedEntry{
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Entry: entry,
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}
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if entry != nil {
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fh.SetEntry(entry)
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}
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if IsDebugFileReadWrite {
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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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if entry != nil {
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fileSize := filer.FileSize(entry)
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entry.Attributes.FileSize = fileSize
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var resolveManifestErr error
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fh.entryChunkGroup, resolveManifestErr = filer.NewChunkGroup(fh.wfs.LookupFn(), fh.wfs.chunkCache, entry.Chunks)
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if resolveManifestErr != nil {
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glog.Warningf("failed to resolve manifest chunks in %+v", entry)
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}
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} else {
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glog.Fatalf("setting file handle entry to nil")
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}
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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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}
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func (fh *FileHandle) ReleaseHandle() {
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fh.entryLock.Lock()
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defer fh.entryLock.Unlock()
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fh.dirtyPages.Destroy()
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if IsDebugFileReadWrite {
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fh.mirrorFile.Close()
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}
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}
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func lessThan(a, b *filer_pb.FileChunk) bool {
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if a.ModifiedTsNs == b.ModifiedTsNs {
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return a.Fid.FileKey < b.Fid.FileKey
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}
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return a.ModifiedTsNs < b.ModifiedTsNs
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}
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