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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.tuscany.sca.invocation;
/**
* Allows asynchronous wires to be navigated in reverse in order for the
* response to be processed.
*
*/
public interface InterceptorAsync extends Interceptor, InvokerAsyncRequest, InvokerAsyncResponse {
/**
* Sets the previous invoker
* @param next The previous invoker
*/
void setPrevious(InvokerAsyncResponse previous);
/**
* Returns the previous invoker or null
* @return The previous Invoker
*/
InvokerAsyncResponse getPrevious();
/**
* Process a request message. Provided so that the synchronous
* and asynchronous patterns can re-use the request message
* processing
*
* @param msg The request Message
* @return the processed message
*
*/
Message processRequest(Message msg);
/**
* Post processing for a request message. Intended to be called after
* the invocation of the request chain returns, to permit cleanup/error handling
* if required
* @param msg The request Message
* @return the processed message
*/
Message postProcessRequest(Message msg);
/**
* Post processing for a request message where an exception was thrown.
* Intended to be called after the invocation of the request chain returns,
* to permit cleanup/error handling if required
* @param msg The request Message
* @param e a Thowable which is some form of exception thrown during the processing
* of the request message by the invocation chain
* @return the processed message
*/
Message postProcessRequest(Message msg, Throwable e) throws Throwable;
/**
* Process a response message. Provided so that the synchronous
* and asynchronous patterns can re-use the response message
* processing
*
* @param msg The response Message
* @return the processed message
*
*/
Message processResponse(Message msg);
} // end interface InterceptorAsync
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