filer: migrating filer store from persisting shorter structured file id instead of a string

weed/pb/filer_pb/filer_pb_helper.go

@@ -0,0 +1,58 @@
+package filer_pb
+
+import (
+	"github.com/chrislusf/seaweedfs/weed/storage/needle"
+)
+
+func toFileId(fileIdStr string) (*FileId, error) {
+	t, err := needle.ParseFileIdFromString(fileIdStr)
+	if err != nil {
+		return nil, err
+	}
+	return &FileId{
+		VolumeId: uint32(t.VolumeId),
+		Cookie:   uint32(t.Cookie),
+		FileKey:  uint64(t.Key),
+	}, nil
+
+}
+
+func (fid *FileId) toFileId() string {
+	return needle.NewFileId(needle.VolumeId(fid.VolumeId), fid.FileKey, fid.Cookie).String()
+}
+
+func BeforeEntrySerialization(chunks []*FileChunk) {
+
+	for _, chunk := range chunks {
+
+		if chunk.FileId != "" {
+			if fid, err := toFileId(chunk.FileId); err == nil {
+				chunk.Fid = fid
+				chunk.FileId = ""
+			}
+		}
+
+		if chunk.SourceFileId != "" {
+			if fid, err := toFileId(chunk.SourceFileId); err == nil {
+				chunk.SourceFid = fid
+				chunk.SourceFileId = ""
+			}
+		}
+
+	}
+}
+
+func AfterEntryDeserialization(chunks []*FileChunk) {
+
+	for _, chunk := range chunks {
+
+		if chunk.Fid != nil && chunk.FileId == "" {
+			chunk.FileId = chunk.Fid.toFileId()
+		}
+
+		if chunk.SourceFid != nil && chunk.SourceFileId == "" {
+			chunk.SourceFileId = chunk.SourceFid.toFileId()
+		}
+
+	}
+}