/*
* Copyright 2010 the original author or authors.
*
* 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 org.gradle.messaging.remote.internal;
import org.gradle.messaging.dispatch.Dispatch;
import org.gradle.messaging.dispatch.MethodInvocation;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
public class MethodInvocationUnmarshallingDispatch implements Dispatch<Object> {
private final Dispatch<? super MethodInvocation> dispatch;
private final ClassLoader classLoader;
private final Map<Object, Method> methods = new HashMap<Object, Method>();
public MethodInvocationUnmarshallingDispatch(Dispatch<? super MethodInvocation> dispatch, ClassLoader classLoader) {
this.dispatch = dispatch;
this.classLoader = classLoader;
}
public void dispatch(Object message) {
if (message instanceof MethodMetaInfo) {
MethodMetaInfo methodMetaInfo = (MethodMetaInfo) message;
Method method = methodMetaInfo.findMethod(classLoader);
methods.put(methodMetaInfo.getKey(), method);
} else if (message instanceof RemoteMethodInvocation) {
RemoteMethodInvocation remoteMethodInvocation = (RemoteMethodInvocation) message;
Method method = methods.get(remoteMethodInvocation.getKey());
if (method == null) {
throw new IllegalStateException("Received a method invocation message for an unknown method.");
}
MethodInvocation methodInvocation = new MethodInvocation(method,
remoteMethodInvocation.getArguments());
dispatch.dispatch(methodInvocation);
} else {
throw new IllegalStateException(String.format("Received an unknown message %s.", message));
}
}
}