--- /dev/null
+/*
+ * Copyright 2016 Huawei Technologies Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.openo.baseservice.roa.util.restclient;
+
+/**
+ * Callback interface for ReST calls.<br/>
+ * <p>
+ * </p>
+ *
+ * @author
+ * @version 28-May-2016
+ */
+public interface RestfulAsyncCallback {
+
+ /**
+ * Response callback.<br/>
+ *
+ * @param response: response of ReST call.
+ * @since
+ */
+ void callback(RestfulResponse response);
+
+ /**
+ * Exceptoin callback.<br/>
+ *
+ * @param e: ReST call exception.
+ * @since
+ */
+ void handleExcepion(Throwable e);
+}