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Code Issues Releases Wiki Activity

Check -files may download a chunk multple times

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This commit fixed a bug that caused 'check -files' to download the same chunk
multiple times if shared by multiple small files.
This commit is contained in:
Gilbert Chen
2019-06-13 14:47:21 -04:00
parent 41668d4bbd
commit 4da7f7b6f9
2 changed files with 14 additions and 3 deletions
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10
src/duplicacy_chunkdownloader.go
View File

@@ -197,6 +197,16 @@ func (downloader *ChunkDownloader) Reclaim(chunkIndex int) {
downloader.lastChunkIndex = chunkIndex
}
// Return the chunk last downloaded and its hash
func (downloader *ChunkDownloader) GetLastDownloadedChunk() (chunk *Chunk, chunkHash string) {
if downloader.lastChunkIndex >= len(downloader.taskList) {
return nil, ""
}
task := downloader.taskList[downloader.lastChunkIndex]
return task.chunk, task.chunkHash
}
// WaitForChunk waits until the specified chunk is ready
func (downloader *ChunkDownloader) WaitForChunk(chunkIndex int) (chunk *Chunk) {

7
src/duplicacy_snapshotmanager.go
View File

@@ -1194,7 +1194,6 @@ func (manager *SnapshotManager) RetrieveFile(snapshot *Snapshot, file *Entry, ou
}
var chunk *Chunk
currentHash := ""
for i := file.StartChunk; i <= file.EndChunk; i++ {
start := 0
@@ -1207,10 +1206,12 @@ func (manager *SnapshotManager) RetrieveFile(snapshot *Snapshot, file *Entry, ou
}
hash := snapshot.ChunkHashes[i]
if currentHash != hash {
lastChunk, lastChunkHash := manager.chunkDownloader.GetLastDownloadedChunk()
if lastChunkHash != hash {
i := manager.chunkDownloader.AddChunk(hash)
chunk = manager.chunkDownloader.WaitForChunk(i)
currentHash = hash
} else {
chunk = lastChunk
}
output(chunk.GetBytes()[start:end])