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add stream list directory entries

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This commit is contained in:
Chris Lu
2021-01-15 23:56:24 -08:00
parent 01dc8a43ba
commit a4063a5437
20 changed files with 267 additions and 242 deletions
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16
weed/filer/leveldb3/leveldb3_store.go
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@@ -286,15 +286,15 @@ func (store *LevelDB3Store) DeleteFolderChildren(ctx context.Context, fullpath w
return nil
}
func (store *LevelDB3Store) ListDirectoryEntries(ctx context.Context, dirPath weed_util.FullPath, startFileName string, includeStartFile bool, limit int64) (entries []*filer.Entry, hasMore bool, err error) {
return store.ListDirectoryPrefixedEntries(ctx, dirPath, startFileName, includeStartFile, limit, "")
func (store *LevelDB3Store) ListDirectoryEntries(ctx context.Context, dirPath weed_util.FullPath, startFileName string, includeStartFile bool, limit int64, eachEntryFunc filer.ListEachEntryFunc) (lastFileName string, err error) {
return store.ListDirectoryPrefixedEntries(ctx, dirPath, startFileName, includeStartFile, limit, "", eachEntryFunc)
}
func (store *LevelDB3Store) ListDirectoryPrefixedEntries(ctx context.Context, dirPath weed_util.FullPath, startFileName string, includeStartFile bool, limit int64, prefix string) (entries []*filer.Entry, hasMore bool, err error) {
func (store *LevelDB3Store) ListDirectoryPrefixedEntries(ctx context.Context, dirPath weed_util.FullPath, startFileName string, includeStartFile bool, limit int64, prefix string, eachEntryFunc filer.ListEachEntryFunc) (lastFileName string, err error) {
db, _, shortPath, err := store.findDB(dirPath, true)
if err != nil {
return nil, false, fmt.Errorf("findDB %s : %v", dirPath, err)
return lastFileName, fmt.Errorf("findDB %s : %v", dirPath, err)
}
directoryPrefix := genDirectoryKeyPrefix(shortPath, prefix)
@@ -316,9 +316,9 @@ func (store *LevelDB3Store) ListDirectoryPrefixedEntries(ctx context.Context, di
if fileName == startFileName && !includeStartFile {
continue
}
lastFileName = fileName
limit--
if limit < 0 {
hasMore = true
break
}
entry := &filer.Entry{
@@ -331,11 +331,13 @@ func (store *LevelDB3Store) ListDirectoryPrefixedEntries(ctx context.Context, di
glog.V(0).Infof("list %s : %v", entry.FullPath, err)
break
}
entries = append(entries, entry)
if !eachEntryFunc(entry) {
break
}
}
iter.Release()
return entries, hasMore, err
return lastFileName, err
}
func genKey(dirPath, fileName string) (key []byte) {