/*
* 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.cloud.stream.binding;
import org.springframework.integration.handler.BridgeHandler;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.SubscribableChannel;
/**
* A {@link StreamListenerResultAdapter} used for bridging an {@link org.springframework.cloud.stream.annotation.Output}
* {@link MessageChannel} to a bound {@link MessageChannel}.
* @author Marius Bogoevici
*/
public class MessageChannelStreamListenerResultAdapter
implements StreamListenerResultAdapter<MessageChannel, MessageChannel> {
@Override
public boolean supports(Class<?> resultType, Class<?> bindingTarget) {
return MessageChannel.class.isAssignableFrom(resultType)
&& MessageChannel.class.isAssignableFrom(bindingTarget);
}
@Override
public void adapt(MessageChannel streamListenerResult, MessageChannel bindingTarget) {
BridgeHandler handler = new BridgeHandler();
handler.setOutputChannel(bindingTarget);
handler.afterPropertiesSet();
((SubscribableChannel) streamListenerResult).subscribe(handler);
}
}