/* | |
* 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.listener; | |
import java.util.List; | |
import com.alibaba.dubbo.common.logger.Logger; | |
import com.alibaba.dubbo.common.logger.LoggerFactory; | |
import com.alibaba.dubbo.rpc.Exporter; | |
import com.alibaba.dubbo.rpc.ExporterListener; | |
import com.alibaba.dubbo.rpc.Invoker; | |
/** | |
* ListenerExporter | |
* | |
* @author william.liangf | |
*/ | |
public class ListenerExporterWrapper<T> implements Exporter<T> { | |
private static final Logger logger = LoggerFactory.getLogger(ListenerExporterWrapper.class); | |
private final Exporter<T> exporter; | |
private final List<ExporterListener> listeners; | |
public ListenerExporterWrapper(Exporter<T> exporter, List<ExporterListener> listeners){ | |
if (exporter == null) { | |
throw new IllegalArgumentException("exporter == null"); | |
} | |
this.exporter = exporter; | |
this.listeners = listeners; | |
if (listeners != null && listeners.size() > 0) { | |
RuntimeException exception = null; | |
for (ExporterListener listener : listeners) { | |
if (listener != null) { | |
try { | |
listener.exported(this); | |
} catch (RuntimeException t) { | |
logger.error(t.getMessage(), t); | |
exception = t; | |
} | |
} | |
} | |
if (exception != null) { | |
throw exception; | |
} | |
} | |
} | |
public Invoker<T> getInvoker() { | |
return exporter.getInvoker(); | |
} | |
public void unexport() { | |
try { | |
exporter.unexport(); | |
} finally { | |
if (listeners != null && listeners.size() > 0) { | |
RuntimeException exception = null; | |
for (ExporterListener listener : listeners) { | |
if (listener != null) { | |
try { | |
listener.unexported(this); | |
} catch (RuntimeException t) { | |
logger.error(t.getMessage(), t); | |
exception = t; | |
} | |
} | |
} | |
if (exception != null) { | |
throw exception; | |
} | |
} | |
} | |
} | |
} |