修复OpenFileCache可能无法更新的Bug

internal/caches/open_file.go

@@ -14,11 +14,12 @@ type OpenFile struct {
 	version int64
 }
 
-func NewOpenFile(fp *os.File, meta []byte, header []byte) *OpenFile {
+func NewOpenFile(fp *os.File, meta []byte, header []byte, version int64) *OpenFile {
 	return &OpenFile{
-		fp:     fp,
-		meta:   meta,
-		header: header,
+		fp:      fp,
+		meta:    meta,
+		header:  header,
+		version: version,
 	}
 }
 

internal/caches/open_file_cache.go

@@ -77,6 +77,7 @@ func (this *OpenFileCache) Put(filename string, file *OpenFile) {
 	} else {
 		_ = this.watcher.Add(filename)
 		pool = NewOpenFilePool(filename)
+		pool.version = file.version
 		this.poolMap[filename] = pool
 		success = pool.Put(file)
 	}

internal/caches/open_file_pool.go

@@ -45,7 +45,7 @@ func (this *OpenFilePool) Get() (*OpenFile, bool) {
 }
 
 func (this *OpenFilePool) Put(file *OpenFile) bool {
-	if file.version > 0 && file.version != this.version {
+	if this.version > 0 && file.version > 0 && file.version != this.version {
 		_ = file.Close()
 		return false
 	}

internal/caches/reader_file.go

@@ -348,7 +348,7 @@ func (this *FileReader) Close() error {
 		if this.openFile != nil {
 			this.openFileCache.Put(this.fp.Name(), this.openFile)
 		} else {
-			this.openFileCache.Put(this.fp.Name(), NewOpenFile(this.fp, this.meta, this.header))
+			this.openFileCache.Put(this.fp.Name(), NewOpenFile(this.fp, this.meta, this.header, this.LastModified()))
 		}
 		return nil
 	}
@@ -367,5 +367,12 @@ func (this *FileReader) readToBuff(fp *os.File, buf []byte) (ok bool, err error)
 func (this *FileReader) discard() error {
 	_ = this.fp.Close()
 	this.isClosed = true
+
+	// close open file cache
+	if this.openFileCache != nil {
+		this.openFileCache.Close(this.fp.Name())
+	}
+
+	// remove file
 	return os.Remove(this.fp.Name())
 }

internal/caches/storage_file.go

@@ -446,6 +446,13 @@ func (this *FileStorage) OpenWriter(key string, expiredAt int64, status int, siz
 	// 检查缓存是否已经生成
 	var cachePathName = dir + "/" + hash
 	var cachePath = cachePathName + ".cache"
+
+	// 关闭OpenFileCache
+	var openFileCache = this.openFileCache
+	if openFileCache != nil {
+		openFileCache.Close(cachePath)
+	}
+
 	stat, err := os.Stat(cachePath)
 	if err == nil && time.Now().Sub(stat.ModTime()) <= 1*time.Second {
 		// 防止并发连续写入
@@ -785,8 +792,9 @@ func (this *FileStorage) Stop() {
 
 	_ = this.list.Close()
 
-	if this.openFileCache != nil {
-		this.openFileCache.CloseAll()
+	var openFileCache = this.openFileCache
+	if openFileCache != nil {
+		openFileCache.CloseAll()
 	}
 
 	this.ignoreKeys.Reset()
@@ -1178,12 +1186,21 @@ func (this *FileStorage) increaseHit(key string, hash string, reader Reader) {
 
 // 删除缓存文件
 func (this *FileStorage) removeCacheFile(path string) error {
+	var openFileCache = this.openFileCache
+	if openFileCache != nil {
+		openFileCache.Close(path)
+	}
+
 	var err = os.Remove(path)
 	if err == nil || os.IsNotExist(err) {
 		err = nil
 
 		// 删除Partial相关
-		_ = os.Remove(partialRangesFilePath(path))
+		var partialPath = partialRangesFilePath(path)
+		if openFileCache != nil {
+			openFileCache.Close(partialPath)
+		}
+		_ = os.Remove(partialPath)
 	}
 	return err
 }