org.apache.solr.common.cloud.DefaultConnectionStrategy Maven / Gradle / Ivy
/*
* 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.solr.common.cloud;
import java.io.IOException;
import java.lang.invoke.MethodHandles;
import java.util.concurrent.TimeoutException;
import org.apache.solr.common.SolrException;
import org.apache.zookeeper.Watcher;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* TODO: improve backoff retry impl
*/
public class DefaultConnectionStrategy extends ZkClientConnectionStrategy {
private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
@Override
public void connect(String serverAddress, int timeout, Watcher watcher, ZkUpdate updater) throws IOException, InterruptedException, TimeoutException {
SolrZooKeeper zk = createSolrZooKeeper(serverAddress, timeout, watcher);
boolean success = false;
try {
updater.update(zk);
success = true;
} finally {
if (!success) {
zk.close();
}
}
}
@Override
public void reconnect(final String serverAddress, final int zkClientTimeout,
final Watcher watcher, final ZkUpdate updater) throws IOException {
log.info("Connection expired - starting a new one...");
SolrZooKeeper zk = createSolrZooKeeper(serverAddress, zkClientTimeout, watcher);
boolean success = false;
try {
updater
.update(zk);
success = true;
log.info("Reconnected to ZooKeeper");
} catch (Exception e) {
SolrException.log(log, "Reconnect to ZooKeeper failed", e);
log.info("Reconnect to ZooKeeper failed");
} finally {
if (!success) {
try {
zk.close();
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
}
}
}