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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.dubbo;
import org.apache.dubbo.common.Parameters;
import org.apache.dubbo.common.URL;
import org.apache.dubbo.common.logger.ErrorTypeAwareLogger;
import org.apache.dubbo.common.logger.LoggerFactory;
import org.apache.dubbo.common.utils.NetUtils;
import org.apache.dubbo.remoting.ChannelHandler;
import org.apache.dubbo.remoting.RemotingException;
import org.apache.dubbo.remoting.exchange.ExchangeClient;
import org.apache.dubbo.remoting.exchange.ExchangeHandler;
import org.apache.dubbo.remoting.exchange.Exchangers;
import org.apache.dubbo.rpc.RpcException;
import java.net.InetSocketAddress;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.atomic.AtomicLong;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import static org.apache.dubbo.common.constants.CommonConstants.LAZY_CONNECT_KEY;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.PROTOCOL_FAILED_REQUEST;
import static org.apache.dubbo.remoting.Constants.SEND_RECONNECT_KEY;
import static org.apache.dubbo.rpc.protocol.dubbo.Constants.DEFAULT_LAZY_REQUEST_WITH_WARNING;
import static org.apache.dubbo.rpc.protocol.dubbo.Constants.LAZY_REQUEST_WITH_WARNING_KEY;
/**
* dubbo protocol support class.
*/
@SuppressWarnings("deprecation")
final class LazyConnectExchangeClient implements ExchangeClient {
private final static ErrorTypeAwareLogger logger = LoggerFactory.getErrorTypeAwareLogger(LazyConnectExchangeClient.class);
private final boolean requestWithWarning;
private final URL url;
private final ExchangeHandler requestHandler;
private final Lock connectLock = new ReentrantLock();
private static final int warningPeriod = 5000;
private final boolean needReconnect;
private volatile ExchangeClient client;
private final AtomicLong warningCount = new AtomicLong(0);
public LazyConnectExchangeClient(URL url, ExchangeHandler requestHandler) {
// lazy connect, need set send.reconnect = true, to avoid channel bad status.
this.url = url.addParameter(LAZY_CONNECT_KEY, true);
this.needReconnect = url.getParameter(SEND_RECONNECT_KEY, false);
this.requestHandler = requestHandler;
this.requestWithWarning = url.getParameter(LAZY_REQUEST_WITH_WARNING_KEY, DEFAULT_LAZY_REQUEST_WITH_WARNING);
}
private void initClient() throws RemotingException {
if (client != null) {
return;
}
if (logger.isInfoEnabled()) {
logger.info("Lazy connect to " + url);
}
connectLock.lock();
try {
if (client != null) {
return;
}
this.client = Exchangers.connect(url, requestHandler);
} finally {
connectLock.unlock();
}
}
@Override
public CompletableFuture