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read in case cross chunks

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This commit is contained in:
Chris Lu 2020-04-29 02:42:58 -07:00
parent f9da859720
commit 7c10602b49
1 changed files with 11 additions and 9 deletions
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20
weed/filer2/stream.go
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@ -98,18 +98,20 @@ func NewChunkStreamReaderFromFiler(masterClient *wdclient.MasterClient, chunks [
} }
} }
func (c *ChunkStreamReader) Read(p []byte) (n int, err error) { func (c *ChunkStreamReader) Read(p []byte) (n int, err error) {
if c.isBufferEmpty() { for n < len(p) {
if c.chunkIndex >= len(c.chunkViews) { if c.isBufferEmpty() {
return 0, io.EOF if c.chunkIndex >= len(c.chunkViews) {
return n, io.EOF
}
chunkView := c.chunkViews[c.chunkIndex]
c.fetchChunkToBuffer(chunkView)
c.chunkIndex++
} }
chunkView := c.chunkViews[c.chunkIndex] t := copy(p[n:], c.buffer[c.bufferPos:])
c.fetchChunkToBuffer(chunkView) c.bufferPos += t
c.chunkIndex++ n += t
} }
n = copy(p, c.buffer[c.bufferPos:])
c.bufferPos += n
return return
} }