external/storm-sqe/src/test/java/com/jwplayer/sqe/util/ZookeeperTestServer.java

/**
 * 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 com.jwplayer.sqe.util;

import kafka.utils.ZkUtils;
import org.I0Itec.zkclient.ZkClient;
import org.I0Itec.zkclient.ZkConnection;
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.CuratorFrameworkFactory;
import org.apache.curator.retry.ExponentialBackoffRetry;
import org.apache.curator.test.TestingServer;
import org.apache.curator.framework.imps.CuratorFrameworkState;

import java.io.IOException;


public class ZookeeperTestServer {
    private CuratorFramework zookeeperTestServer;
    private TestingServer testingServer;

    public ZookeeperTestServer() {
        try {
            testingServer = new TestingServer();
            ExponentialBackoffRetry backoffRetry = new ExponentialBackoffRetry(1000, 4);
            zookeeperTestServer = CuratorFrameworkFactory.newClient(getConnectionString(), backoffRetry);
        } catch (Exception ex) {
            throw new RuntimeException("Couldn't start test ZK server", ex);
        }
    }

    public String getConnectionString() {
        return testingServer.getConnectString();
    }

    public ZkUtils getZkUtils() {
        ZkClient zkClient = new ZkClient(getConnectionString());
        return new ZkUtils(zkClient, new ZkConnection(getConnectionString()), false);
    }

    public void shutdown() {
        try {
            if (zookeeperTestServer.getState().equals(CuratorFrameworkState.STARTED)) {
                zookeeperTestServer.close();
            }
            testingServer.close();
        } catch (IOException ex) {
            throw new RuntimeException("Couldn't shutdown test ZK server", ex);
        }
    }
}