dubbo AbstractExporter 源码
dubbo AbstractExporter 代码
文件路径：/dubbo-rpc/dubbo-rpc-api/src/main/java/org/apache/dubbo/rpc/protocol/AbstractExporter.java
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.dubbo.rpc.protocol;
import org.apache.dubbo.common.logger.Logger;
import org.apache.dubbo.common.logger.LoggerFactory;
import org.apache.dubbo.rpc.Exporter;
import org.apache.dubbo.rpc.Invoker;
/**
* AbstractExporter.
*/
public abstract class AbstractExporter<T> implements Exporter<T> {
protected final Logger logger = LoggerFactory.getLogger(getClass());
private final Invoker<T> invoker;
private volatile boolean unexported = false;
public AbstractExporter(Invoker<T> invoker) {
if (invoker == null) {
throw new IllegalStateException("service invoker == null");
}
if (invoker.getInterface() == null) {
throw new IllegalStateException("service type == null");
}
if (invoker.getUrl() == null) {
throw new IllegalStateException("service url == null");
}
this.invoker = invoker;
}
@Override
public Invoker<T> getInvoker() {
return invoker;
}
@Override
final public void unexport() {
if (unexported) {
return;
}
unexported = true;
getInvoker().destroy();
afterUnExport();
}
/**
* subclasses need to override this method to destroy resources.
*/
public void afterUnExport() {
}
@Override
public String toString() {
return getInvoker().toString();
}
}
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