getbucket and putObjectCopy reimplem

Author: benzekrimaha

lib/storage/data/DataWrapper.js

@@ -498,8 +498,7 @@ class DataWrapper {
                     new RelayMD5Sum(totalHash, updatedHash => {
                         totalHash = updatedHash;
                     });
-                    const actualStream = stream.createReadStream();
-                    actualStream.pipe(hashedStream);
+                    stream.pipe(hashedStream);
 
                     // destLocationConstraintName is location of the
                     // destination MPU object

lib/storage/data/external/GCP/GcpService.js

@@ -239,6 +239,10 @@ class GcpClient extends S3Client {
             .customizeDescription('GCP: getObjectAcl not implemented'));
     }
 
+    getBucket(params, callback) {
+        return this.listObjects(params, callback);
+    }
+
     /**
      * Multipart upload (managed upload, single or multi-part).
      * @param {object} params - S3 upload params
@@ -254,6 +258,10 @@ class GcpClient extends S3Client {
         }
     }
 
+    putObjectCopy(params, callback) {
+        return this.copyObject(params, callback);
+    }
+
     /**
      * List objects in a bucket.
      * @param {object} params - S3 listObjects params