/
AbstractProtocol.java
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/
AbstractProtocol.java
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/*
* 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.URL;
import org.apache.dubbo.common.logger.Logger;
import org.apache.dubbo.common.logger.LoggerFactory;
import org.apache.dubbo.common.utils.ConcurrentHashSet;
import org.apache.dubbo.remoting.Constants;
import org.apache.dubbo.rpc.Exporter;
import org.apache.dubbo.rpc.Invoker;
import org.apache.dubbo.rpc.Protocol;
import org.apache.dubbo.rpc.ProtocolServer;
import org.apache.dubbo.rpc.RpcException;
import org.apache.dubbo.rpc.support.ProtocolUtils;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import static org.apache.dubbo.common.constants.CommonConstants.GROUP_KEY;
import static org.apache.dubbo.common.constants.CommonConstants.VERSION_KEY;
/**
* abstract ProtocolSupport.
*/
public abstract class AbstractProtocol implements Protocol {
protected final Logger logger = LoggerFactory.getLogger(getClass());
protected final DelegateExporterMap exporterMap = new DelegateExporterMap();
/**
* <host:port, ProtocolServer>
*/
protected final Map<String, ProtocolServer> serverMap = new ConcurrentHashMap<>();
//TODO SoftReference
protected final Set<Invoker<?>> invokers = new ConcurrentHashSet<Invoker<?>>();
protected static String serviceKey(URL url) {
int port = url.getParameter(Constants.BIND_PORT_KEY, url.getPort());
return serviceKey(port, url.getPath(), url.getParameter(VERSION_KEY), url.getParameter(GROUP_KEY));
}
protected static String serviceKey(int port, String serviceName, String serviceVersion, String serviceGroup) {
return ProtocolUtils.serviceKey(port, serviceName, serviceVersion, serviceGroup);
}
@Override
public List<ProtocolServer> getServers() {
return Collections.unmodifiableList(new ArrayList<>(serverMap.values()));
}
@Override
public void destroy() {
for (Invoker<?> invoker : invokers) {
if (invoker != null) {
invokers.remove(invoker);
try {
if (logger.isInfoEnabled()) {
logger.info("Destroy reference: " + invoker.getUrl());
}
invoker.destroy();
} catch (Throwable t) {
logger.warn(t.getMessage(), t);
}
}
}
for (Map.Entry<String, Exporter<?>> item : exporterMap.getExporterMap().entrySet()) {
if (exporterMap.removeExportMap(item.getKey(), item.getValue())) {
try {
if (logger.isInfoEnabled()) {
logger.info("Unexport service: " + item.getValue().getInvoker().getUrl());
}
item.getValue().unexport();
} catch (Throwable t) {
logger.warn(t.getMessage(), t);
}
}
}
}
@Override
public <T> Invoker<T> refer(Class<T> type, URL url) throws RpcException {
return new AsyncToSyncInvoker<>(protocolBindingRefer(type, url));
}
protected abstract <T> Invoker<T> protocolBindingRefer(Class<T> type, URL url) throws RpcException;
public Map<String, Exporter<?>> getExporterMap() {
return exporterMap.getExporterMap();
}
public Collection<Exporter<?>> getExporters() {
return exporterMap.getExporters();
}
}