@@ -0,0 +1,1969 @@
+/*%0A * Copyright (c) 2021 WSO2 Inc. (http://www.wso2.org) All Rights Reserved.%0A *%0A * WSO2 Inc. licenses this file to you under the Apache License,%0A * Version 2.0 (the %22License%22); you may not use this file except%0A * in compliance with the License.%0A * You may obtain a copy of the License at%0A *%0A *   http://www.apache.org/licenses/LICENSE-2.0%0A *%0A * Unless required by applicable law or agreed to in writing,%0A * software distributed under the License is distributed on an%0A * %22AS IS%22 BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY%0A * KIND, either express or implied.  See the License for the%0A * specific language governing permissions and limitations%0A * under the License.%0A */%0Apackage org.wso2.carbon.apimgt.gateway.extension.listener;%0A%0Aimport org.wso2.carbon.apimgt.gateway.extension.listener.dto.ExtensionResponseDTO;%0Aimport org.wso2.carbon.apimgt.gateway.extension.listener.dto.RequestContextDTO;%0Aimport org.wso2.carbon.apimgt.gateway.extension.listener.dto.ResponseContextDTO;%0A%0A/**%0A * TODO:add comment%0A */%0Apublic interface ExtensionListener %7B%0A%0A    /***%0A     * Pre process Request%0A     * @param requestContextDTO%0A     * @throws Exception%0A     */%0A    ExtensionResponseDTO preProcessRequest(RequestContextDTO requestContextDTO) throws Exception;%0A%0A    /***%0A     * Post process request%0A     * @param requestContextDTO%0A     * @throws Exception%0A     */%0A    ExtensionResponseDTO postProcessRequest(RequestContextDTO requestContextDTO) throws Exception;%0A%0A    /***%0A     * Process response%0A     * @param responseContextDTO%0A     * @throws Exception%0A     */%0A    ExtensionResponseDTO preProcessResponse(ResponseContextDTO responseContextDTO) throws Exception;%0A%0A    /**%0A     * TODO://add comment%0A     *%0A     * @param responseContextDTO%0A     * @return%0A     * @throws Exception%0A     */%0A    ExtensionResponseDTO postProcessResponse(ResponseContextDTO responseContextDTO) throws Exception;%0A%0A    /**%0A     * TODO:// add comment%0A     *%0A     * @return%0A     */%0A    boolean isBuildPayload();%0A%7D%0A%0A

add extension listener interface.