/* | |
* Copyright 1999-2011 Alibaba Group. | |
* | |
* 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.alibaba.dubbo.rpc.filter; | |
import com.alibaba.dubbo.common.Constants; | |
import com.alibaba.dubbo.common.Extension; | |
import com.alibaba.dubbo.rpc.Filter; | |
import com.alibaba.dubbo.rpc.Invoker; | |
import com.alibaba.dubbo.rpc.RpcException; | |
import com.alibaba.dubbo.rpc.Invocation; | |
import com.alibaba.dubbo.rpc.Result; | |
import com.alibaba.dubbo.rpc.RpcResult; | |
/** | |
* EchoInvokerFilter | |
* | |
* @author william.liangf | |
*/ | |
@Extension("echo") | |
public class EchoFilter implements Filter { | |
public Result invoke(Invoker<?> invoker, Invocation inv) throws RpcException { | |
if(inv.getMethodName().equals(Constants.$ECHO) && inv.getArguments() != null && inv.getArguments().length == 1 ) | |
return new RpcResult(inv.getArguments()[0]); | |
return invoker.invoke(inv); | |
} | |
} |