diff options
Diffstat (limited to 'weed/filer2/filechunks.go')
| -rw-r--r-- | weed/filer2/filechunks.go | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/weed/filer2/filechunks.go b/weed/filer2/filechunks.go index 0ac7bb43b..e47cb762f 100644 --- a/weed/filer2/filechunks.go +++ b/weed/filer2/filechunks.go @@ -3,6 +3,8 @@ package filer2 import ( "math" "sort" + "hash/fnv" + "fmt" "github.com/chrislusf/seaweedfs/weed/pb/filer_pb" ) @@ -17,6 +19,18 @@ func TotalSize(chunks []*filer_pb.FileChunk) (size uint64) { return } +func ETag(chunks []*filer_pb.FileChunk) (etag string) { + if len(chunks) == 1 { + return chunks[0].ETag + } + + h := fnv.New32a() + for _, c := range chunks { + h.Write([]byte(c.ETag)) + } + return fmt.Sprintf("%x", h.Sum32()) +} + func CompactFileChunks(chunks []*filer_pb.FileChunk) (compacted, garbage []*filer_pb.FileChunk) { visibles := nonOverlappingVisibleIntervals(chunks) |