org.springframework.amqp.support.converter.RemoteInvocationAwareMessageConverterAdapter Maven / Gradle / Ivy
/*
* Copyright 2016 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.springframework.amqp.support.converter;
import org.springframework.amqp.AmqpRemoteException;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.core.MessageProperties;
import org.springframework.beans.factory.BeanClassLoaderAware;
import org.springframework.remoting.support.RemoteInvocationResult;
import org.springframework.util.Assert;
/**
* A delegating adapter that unwraps {@link RemoteInvocationResult} after invoking
* the delegate to convert from a message.
* Delegates to a {@link SimpleMessageConverter} by default.
*
* @author Gary Russell
* @since 2.0
*
*/
public class RemoteInvocationAwareMessageConverterAdapter implements MessageConverter, BeanClassLoaderAware {
private final MessageConverter delegate;
private final boolean shouldSetClassLoader;
public RemoteInvocationAwareMessageConverterAdapter() {
this.delegate = new SimpleMessageConverter();
this.shouldSetClassLoader = true;
}
public RemoteInvocationAwareMessageConverterAdapter(MessageConverter delegate) {
Assert.notNull(delegate, "'delegate' converter cannot be null");
this.delegate = delegate;
this.shouldSetClassLoader = false;
}
@Override
public void setBeanClassLoader(ClassLoader classLoader) {
if (this.shouldSetClassLoader) {
((SimpleMessageConverter) this.delegate).setBeanClassLoader(classLoader);
}
}
@Override
public Message toMessage(Object object, MessageProperties messageProperties) throws MessageConversionException {
return this.delegate.toMessage(object, messageProperties);
}
@Override
public Object fromMessage(Message message) throws MessageConversionException {
Object result = this.delegate.fromMessage(message);
if (result instanceof RemoteInvocationResult) {
try {
result = ((RemoteInvocationResult) result).recreate();
}
catch (Throwable e) { // NOSONAR
throw new AmqpRemoteException(e);
}
}
return result;
}
}