org.citrusframework.zookeeper.client.ZooClient Maven / Gradle / Ivy
/*
* Copyright the original author or authors.
*
* 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 org.citrusframework.zookeeper.client;
import org.citrusframework.exceptions.CitrusRuntimeException;
import org.apache.zookeeper.Watcher;
import org.apache.zookeeper.ZooKeeper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
/**
* Zookeeper client used for executing zookeeper commands.
*
* @author Martin Maher
* @since 2.5
*/
public class ZooClient {
/** Logger */
private static final Logger logger = LoggerFactory.getLogger(ZooClient.class);
/** ZooKeeper client */
private ZooKeeper zookeeper;
/** Zookeeper config */
private ZooClientConfig zookeeperConfig;
/**
* Default constructor.
*/
public ZooClient() {
super();
}
/**
* Constructor using zookeeper client instance.
* @param zookeeper
*/
public ZooClient(ZooKeeper zookeeper) {
this();
this.zookeeper = zookeeper;
}
/**
* Creates a new Zookeeper client instance with configuration.
* @return
*/
private ZooKeeper createZooKeeperClient() throws IOException {
ZooClientConfig config = getZookeeperClientConfig();
return new ZooKeeper(config.getUrl(), config.getTimeout(), getConnectionWatcher());
}
/**
* Constructs or gets the zookeeper client implementation.
* @return
*/
public ZooKeeper getZooKeeperClient() {
if (zookeeper == null) {
try {
zookeeper = createZooKeeperClient();
int retryAttempts = 5;
while(!zookeeper.getState().isConnected() && retryAttempts > 0) {
logger.debug("connecting...");
retryAttempts--;
Thread.sleep(1000);
}
} catch (IOException | InterruptedException e) {
throw new CitrusRuntimeException(e);
}
}
return zookeeper;
}
/**
* Gets the zookeeper client configuration.
* @return
*/
public ZooClientConfig getZookeeperClientConfig() {
if (zookeeperConfig == null) {
zookeeperConfig = ZooClientConfig.createDefaultConfigBuilder().build();
}
return zookeeperConfig;
}
/**
* Sets the zookeeper client configuration.
* @param zookeeperConfig
*/
public void setZookeeperClientConfig(ZooClientConfig zookeeperConfig) {
this.zookeeperConfig = zookeeperConfig;
}
private Watcher getConnectionWatcher() {
return event -> logger.debug(String.format("Connection Event: %s", event.toString()));
}
}