Add support for multi site replication (#12880)

cmd/storage-datatypes.go

@@ -169,11 +169,8 @@ type FileInfo struct {
 	// Erasure info for all objects.
 	Erasure ErasureInfo
 
-	// DeleteMarkerReplicationStatus is set when this FileInfo represents
-	// replication on a DeleteMarker
-	MarkDeleted                   bool // mark this version as deleted
-	DeleteMarkerReplicationStatus string
-	VersionPurgeStatus            VersionPurgeStatusType
+	MarkDeleted      bool             // mark this version as deleted
+	ReplicationState ReplicationState // Internal replication state to be passed back in ObjectInfo
 
 	Data []byte // optionally carries object data
 
@@ -200,30 +197,6 @@ func (fi *FileInfo) SetInlineData() {
 // VersionPurgeStatusKey denotes purge status in metadata
 const VersionPurgeStatusKey = "purgestatus"
 
-// VersionPurgeStatusType represents status of a versioned delete or permanent delete w.r.t bucket replication
-type VersionPurgeStatusType string
-
-const (
-	// Pending - versioned delete replication is pending.
-	Pending VersionPurgeStatusType = "PENDING"
-
-	// Complete - versioned delete replication is now complete, erase version on disk.
-	Complete VersionPurgeStatusType = "COMPLETE"
-
-	// Failed - versioned delete replication failed.
-	Failed VersionPurgeStatusType = "FAILED"
-)
-
-// Empty returns true if purge status was not set.
-func (v VersionPurgeStatusType) Empty() bool {
-	return string(v) == ""
-}
-
-// Pending returns true if the version is pending purge.
-func (v VersionPurgeStatusType) Pending() bool {
-	return v == Pending || v == Failed
-}
-
 // newFileInfo - initializes new FileInfo, allocates a fresh erasure info.
 func newFileInfo(object string, dataBlocks, parityBlocks int) (fi FileInfo) {
 	fi.Erasure = ErasureInfo{