More fixes for delete marker replication (#11504)

continuation of PR#11491 for multiple server pools and
bi-directional replication.

Moving proxying for GET/HEAD to handler level rather than
server pool layer as this was also causing incorrect proxying 
of HEAD.

Also fixing metadata update on CopyObject - minio-go was not passing
source version ID in X-Amz-Copy-Source header

cmd/bucket-replication.go

@@ -184,6 +184,8 @@ func checkReplicateDelete(ctx context.Context, bucket string, dobj ObjectToDelet
 	if gerr != nil {
 		validReplStatus := false
 		switch oi.ReplicationStatus {
+		// Point to note: even if two way replication with Deletemarker or Delete sync is enabled,
+		// deletion of a REPLICA object/deletemarker will not trigger a replication to the other cluster.
 		case replication.Pending, replication.Completed, replication.Failed:
 			validReplStatus = true
 		}
@@ -648,9 +650,14 @@ func replicateObject(ctx context.Context, objInfo ObjectInfo, objectAPI ObjectLa
 	replicationStatus := replication.Completed
 	if rtype != replicateAll {
 		// replicate metadata for object tagging/copy with metadata replacement
+		srcOpts := miniogo.CopySrcOptions{
+			Bucket:    dest.Bucket,
+			Object:    object,
+			VersionID: objInfo.VersionID}
 		dstOpts := miniogo.PutObjectOptions{Internal: miniogo.AdvancedPutOptions{SourceVersionID: objInfo.VersionID}}
 		c := &miniogo.Core{Client: tgt.Client}
-		if _, err = c.CopyObject(ctx, dest.Bucket, object, dest.Bucket, object, getCopyObjMetadata(objInfo, dest), dstOpts); err != nil {
+
+		if _, err = c.CopyObject(ctx, dest.Bucket, object, dest.Bucket, object, getCopyObjMetadata(objInfo, dest), srcOpts, dstOpts); err != nil {
 			replicationStatus = replication.Failed
 			logger.LogIf(ctx, fmt.Errorf("Unable to replicate metadata for object %s/%s(%s): %s", bucket, objInfo.Name, objInfo.VersionID, err))
 		}
@@ -876,6 +883,7 @@ func proxyGetToReplicationTarget(ctx context.Context, bucket, object string, rs
 	if err != nil {
 		return nil, false
 	}
+	reader.ObjInfo = oi.Clone()
 	return reader, true
 }
 

cmd/erasure-server-pool.go

@@ -521,13 +521,6 @@ func (z *erasureServerPools) GetObjectNInfo(ctx context.Context, bucket, object
 		}
 		return gr, nil
 	}
-	if isProxyable(ctx, bucket) {
-		// proxy to replication target if active-active replication is in place.
-		reader, proxy := proxyGetToReplicationTarget(ctx, bucket, object, rs, h, opts)
-		if reader != nil && proxy {
-			return reader, nil
-		}
-	}
 	if opts.VersionID != "" {
 		return gr, VersionNotFound{Bucket: bucket, Object: object, VersionID: opts.VersionID}
 	}
@@ -573,13 +566,6 @@ func (z *erasureServerPools) GetObjectInfo(ctx context.Context, bucket, object s
 		return objInfo, nil
 	}
 	object = decodeDirObject(object)
-	// proxy HEAD to replication target if active-active replication configured on bucket
-	if isProxyable(ctx, bucket) {
-		oi, proxy, err := proxyHeadToReplicationTarget(ctx, bucket, object, opts)
-		if proxy {
-			return oi, err
-		}
-	}
 	if opts.VersionID != "" {
 		return objInfo, VersionNotFound{Bucket: bucket, Object: object, VersionID: opts.VersionID}
 	}

cmd/gateway/s3/gateway-s3.go

@@ -515,7 +515,7 @@ func (l *s3Objects) CopyObject(ctx context.Context, srcBucket string, srcObject
 		srcInfo.UserDefined[k] = v[0]
 	}
 
-	if _, err = l.Client.CopyObject(ctx, srcBucket, srcObject, dstBucket, dstObject, srcInfo.UserDefined, miniogo.PutObjectOptions{}); err != nil {
+	if _, err = l.Client.CopyObject(ctx, srcBucket, srcObject, dstBucket, dstObject, srcInfo.UserDefined, miniogo.CopySrcOptions{}, miniogo.PutObjectOptions{}); err != nil {
 		return objInfo, minio.ErrorRespToObjectError(err, srcBucket, srcObject)
 	}
 	return l.GetObjectInfo(ctx, dstBucket, dstObject, dstOpts)

cmd/object-handlers.go

@@ -411,10 +411,30 @@ func (api objectAPIHandlers) GetObjectHandler(w http.ResponseWriter, r *http.Req
 
 	gr, err := getObjectNInfo(ctx, bucket, object, rs, r.Header, readLock, opts)
 	if err != nil {
+		var (
+			reader *GetObjectReader
+			proxy  bool
+		)
+		if isProxyable(ctx, bucket) {
+			// proxy to replication target if active-active replication is in place.
+			reader, proxy = proxyGetToReplicationTarget(ctx, bucket, object, rs, r.Header, opts)
+			if reader != nil && proxy {
+				gr = reader
+			}
+		}
+		if reader == nil || !proxy {
 			if isErrPreconditionFailed(err) {
 				return
 			}
 			if globalBucketVersioningSys.Enabled(bucket) && gr != nil {
+				if !gr.ObjInfo.VersionPurgeStatus.Empty() {
+					// Shows the replication status of a permanent delete of a version
+					w.Header()[xhttp.MinIODeleteReplicationStatus] = []string{string(gr.ObjInfo.VersionPurgeStatus)}
+				}
+				if !gr.ObjInfo.ReplicationStatus.Empty() && gr.ObjInfo.DeleteMarker {
+					w.Header()[xhttp.MinIODeleteMarkerReplicationStatus] = []string{string(gr.ObjInfo.ReplicationStatus)}
+				}
+
 				// Versioning enabled quite possibly object is deleted might be delete-marker
 				// if present set the headers, no idea why AWS S3 sets these headers.
 				if gr.ObjInfo.VersionID != "" && gr.ObjInfo.DeleteMarker {
@@ -425,6 +445,7 @@ func (api objectAPIHandlers) GetObjectHandler(w http.ResponseWriter, r *http.Req
 			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
 			return
 		}
+	}
 	defer gr.Close()
 
 	objInfo := gr.ObjInfo
@@ -577,6 +598,19 @@ func (api objectAPIHandlers) HeadObjectHandler(w http.ResponseWriter, r *http.Re
 
 	objInfo, err := getObjectInfo(ctx, bucket, object, opts)
 	if err != nil {
+		var (
+			proxy bool
+			perr  error
+			oi    ObjectInfo
+		)
+		// proxy HEAD to replication target if active-active replication configured on bucket
+		if isProxyable(ctx, bucket) {
+			oi, proxy, perr = proxyHeadToReplicationTarget(ctx, bucket, object, opts)
+			if proxy && perr == nil {
+				objInfo = oi
+			}
+		}
+		if !proxy || perr != nil {
 			if globalBucketVersioningSys.Enabled(bucket) {
 				if !objInfo.VersionPurgeStatus.Empty() {
 					// Shows the replication status of a permanent delete of a version
@@ -595,6 +629,7 @@ func (api objectAPIHandlers) HeadObjectHandler(w http.ResponseWriter, r *http.Re
 			writeErrorResponseHeadersOnly(w, toAPIError(ctx, err))
 			return
 		}
+	}
 
 	// Automatically remove the object/version is an expiry lifecycle rule can be applied
 	if lc, err := globalLifecycleSys.Get(bucket); err == nil {

go.mod

@@ -49,7 +49,7 @@ require (
 	github.com/minio/cli v1.22.0
 	github.com/minio/highwayhash v1.0.1
 	github.com/minio/md5-simd v1.1.1 // indirect
-	github.com/minio/minio-go/v7 v7.0.8
+	github.com/minio/minio-go/v7 v7.0.9-0.20210210235136-83423dddb072
 	github.com/minio/selfupdate v0.3.1
 	github.com/minio/sha256-simd v0.1.1
 	github.com/minio/simdjson-go v0.2.1

go.sum

@@ -419,6 +419,8 @@ github.com/minio/md5-simd v1.1.1 h1:9ojcLbuZ4gXbB2sX53MKn8JUZ0sB/2wfwsEcRw+I08U=
 github.com/minio/md5-simd v1.1.1/go.mod h1:XpBqgZULrMYD3R+M28PcmP0CkI7PEMzB3U77ZrKZ0Gw=
 github.com/minio/minio-go/v7 v7.0.8 h1:snnHtYkHz3TKrQJY1jTQGOZqnue79pbYTukuwqz/QvM=
 github.com/minio/minio-go/v7 v7.0.8/go.mod h1:pEZBUa+L2m9oECoIA6IcSK8bv/qggtQVLovjeKK5jYc=
+github.com/minio/minio-go/v7 v7.0.9-0.20210210235136-83423dddb072 h1:zlheLAzZ66jYLUsa81R8gwPtSgKRI5FMJyAKuaJpkHE=
+github.com/minio/minio-go/v7 v7.0.9-0.20210210235136-83423dddb072/go.mod h1:pEZBUa+L2m9oECoIA6IcSK8bv/qggtQVLovjeKK5jYc=
 github.com/minio/selfupdate v0.3.1 h1:BWEFSNnrZVMUWXbXIgLDNDjbejkmpAmZvy/nCz1HlEs=
 github.com/minio/selfupdate v0.3.1/go.mod h1:b8ThJzzH7u2MkF6PcIra7KaXO9Khf6alWPvMSyTDCFM=
 github.com/minio/sha256-simd v0.1.1 h1:5QHSlgo3nt5yKOJrC7W8w7X+NFl8cMPZm96iu8kKUJU=