/**
* 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.s4.comm.tools;
import java.util.concurrent.TimeUnit;
import org.I0Itec.zkclient.exception.ZkException;
import org.apache.s4.comm.topology.ZNRecord;
import org.apache.s4.comm.topology.ZNRecordSerializer;
import org.apache.s4.comm.topology.ZkClient;
/**
* Used for defining and dimensioning logical clusters in Zookeeper.
*
*/
public class TaskSetup {
private ZkClient zkclient;
public TaskSetup(String zookeeperAddress) {
zkclient = new ZkClient(zookeeperAddress);
zkclient.setZkSerializer(new ZNRecordSerializer());
if (!zkclient.waitUntilConnected(10, TimeUnit.SECONDS)) {
throw new RuntimeException("Could not connect to ZooKeeper after 10 seconds.");
}
}
public void clean(String clusterName, String topologyName) {
zkclient.deleteRecursive("/s4/clusters/" + topologyName);
}
public void clean(String clusterName) {
zkclient.deleteRecursive("/" + clusterName);
}
public void setup(String cluster, int tasks, int initialPort) {
try {
zkclient.createPersistent("/s4/streams", true);
} catch (ZkException ignored) {
// ignore if exists
}
zkclient.createPersistent("/s4/clusters/" + cluster + "/tasks", true);
zkclient.createPersistent("/s4/clusters/" + cluster + "/process", true);
zkclient.createPersistent("/s4/clusters/" + cluster + "/app", true);
for (int i = 0; i < tasks; i++) {
String taskId = "Task-" + i;
ZNRecord record = new ZNRecord(taskId);
record.putSimpleField("taskId", taskId);
record.putSimpleField("port", String.valueOf(initialPort + i));
record.putSimpleField("partition", String.valueOf(i));
record.putSimpleField("cluster", cluster);
zkclient.createPersistent("/s4/clusters/" + cluster + "/tasks/" + taskId, record);
}
}
public void disconnect() {
zkclient.close();
}
}