/* | |
* 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.remoting; | |
import java.lang.reflect.InvocationTargetException; | |
import com.alibaba.dubbo.common.bytecode.NoSuchMethodException; | |
import com.alibaba.dubbo.common.bytecode.Wrapper; | |
import com.alibaba.dubbo.remoting.exchange.ExchangeChannel; | |
import com.alibaba.dubbo.remoting.exchange.support.Replier; | |
/** | |
* RpcMessageHandler. | |
* | |
* @author qian.lei | |
*/ | |
public class RpcMessageHandler implements Replier<RpcMessage> | |
{ | |
public static interface ServiceProvider{ Object getImplementation(String service); } | |
private final static ServiceProvider DEFAULT_PROVIDER = new ServiceProvider(){ | |
public Object getImplementation(String service) | |
{ | |
String impl = service + "Impl"; | |
try | |
{ | |
Class<?> cl = Thread.currentThread().getContextClassLoader().loadClass(impl); | |
return cl.newInstance(); | |
} | |
catch(Exception e) | |
{ | |
e.printStackTrace(); | |
} | |
return null; | |
} | |
}; | |
private ServiceProvider mProvider; | |
public RpcMessageHandler() | |
{ | |
this(DEFAULT_PROVIDER); | |
} | |
public RpcMessageHandler(ServiceProvider prov) | |
{ | |
mProvider = prov; | |
} | |
public Class<RpcMessage> interest() | |
{ | |
return RpcMessage.class; | |
} | |
public Object reply(ExchangeChannel channel, RpcMessage msg) throws RemotingException | |
{ | |
String desc = msg.getMethodDesc(); | |
Object[] args = msg.getArguments(); | |
Object impl = mProvider.getImplementation(msg.getClassName()); | |
Wrapper wrap = Wrapper.getWrapper(impl.getClass()); | |
try | |
{ | |
return new MockResult(wrap.invokeMethod(impl, desc, msg.getParameterTypes(), args)); | |
} | |
catch(NoSuchMethodException e) | |
{ | |
throw new RemotingException(channel, "Service method not found."); | |
} | |
catch(InvocationTargetException e) | |
{ | |
return new MockResult(e.getTargetException()); | |
} | |
} | |
} |