/*
* Copyright 2009-2016 Weibo, Inc.
*
* 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 com.weibo.api.motan.transport.support;
import com.weibo.api.motan.common.MotanConstants;
import com.weibo.api.motan.core.extension.SpiMeta;
import com.weibo.api.motan.rpc.DefaultRequest;
import com.weibo.api.motan.rpc.DefaultResponse;
import com.weibo.api.motan.rpc.Request;
import com.weibo.api.motan.transport.Channel;
import com.weibo.api.motan.transport.HeartbeatFactory;
import com.weibo.api.motan.transport.MessageHandler;
import com.weibo.api.motan.util.RequestIdGenerator;
/**
* @author maijunsheng
* @version 创建时间:2013-6-14
*
*/
@SpiMeta(name = "motan")
public class DefaultRpcHeartbeatFactory implements HeartbeatFactory {
@Override
public Request createRequest() {
DefaultRequest request = new DefaultRequest();
request.setRequestId(RequestIdGenerator.getRequestId());
request.setInterfaceName(MotanConstants.HEARTBEAT_INTERFACE_NAME);
request.setMethodName(MotanConstants.HEARTBEAT_METHOD_NAME);
request.setParamtersDesc(MotanConstants.HHEARTBEAT_PARAM);
return request;
}
@Override
public MessageHandler wrapMessageHandler(MessageHandler handler) {
return new HeartMessageHandleWrapper(handler);
}
public static boolean isHeartbeatRequest(Object message) {
if (!(message instanceof Request)) {
return false;
}
Request request = (Request) message;
return MotanConstants.HEARTBEAT_INTERFACE_NAME.equals(request.getInterfaceName())
&& MotanConstants.HEARTBEAT_METHOD_NAME.equals(request.getMethodName())
&& MotanConstants.HHEARTBEAT_PARAM.endsWith(request.getParamtersDesc());
}
private class HeartMessageHandleWrapper implements MessageHandler {
private MessageHandler messageHandler;
public HeartMessageHandleWrapper(MessageHandler messageHandler) {
this.messageHandler = messageHandler;
}
@Override
public Object handle(Channel channel, Object message) {
if (isHeartbeatRequest(message)) {
DefaultResponse response = new DefaultResponse();
response.setValue("heartbeat");
return response;
}
return messageHandler.handle(channel, message);
}
}
}