| /** |
| * 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.crunch.kafka.utils; |
| |
| import kafka.utils.ZkUtils; |
| import org.I0Itec.zkclient.ZkClient; |
| import org.I0Itec.zkclient.ZkConnection; |
| |
| import java.io.IOException; |
| |
| /** |
| * A test harness that brings up an embedded Zookeeper instance. |
| * <p> |
| * Adapted from the {@code kafka.zk.ZooKeeperTestHarness} class. |
| * </p> |
| */ |
| public class ZookeeperTestHarness { |
| |
| /** |
| * Zookeeper connection info. |
| */ |
| protected final String zookeeperConnect; |
| |
| private EmbeddedZookeeper zookeeper; |
| private final int zkConnectionTimeout; |
| private final int zkSessionTimeout; |
| |
| /** |
| * Zookeeper client connection. |
| */ |
| protected ZkUtils zkUtils; |
| |
| /** |
| * Creates a new Zookeeper broker test harness. |
| */ |
| public ZookeeperTestHarness() { |
| this(KafkaTestUtils.getPorts(1)[0]); |
| } |
| |
| /** |
| * Creates a new Zookeeper service test harness using the given port. |
| * |
| * @param zookeeperPort The port number to use for Zookeeper client connections. |
| */ |
| public ZookeeperTestHarness(int zookeeperPort) { |
| this.zookeeper = null; |
| this.zkUtils = null; |
| this.zkConnectionTimeout = 6000; |
| this.zkSessionTimeout = 6000; |
| this.zookeeperConnect = "localhost:" + zookeeperPort; |
| } |
| |
| /** |
| * Returns a client for communicating with the Zookeeper service. |
| * |
| * @return A Zookeeper client. |
| * |
| * @throws IllegalStateException |
| * if Zookeeper has not yet been {@link #setUp()}, or has already been {@link #tearDown() torn down}. |
| */ |
| public ZkClient getZkClient() { |
| if (zkUtils == null) { |
| throw new IllegalStateException("Zookeeper service is not active"); |
| } |
| return zkUtils.zkClient(); |
| } |
| |
| public ZkUtils getZkUtils() { |
| return zkUtils; |
| } |
| |
| /** |
| * Startup Zookeeper. |
| * |
| * @throws IOException if an error occurs during Zookeeper initialization. |
| */ |
| public void setUp() throws IOException { |
| zookeeper = new EmbeddedZookeeper(zookeeperConnect); |
| ZkClient zkClient = new ZkClient(zookeeperConnect, zkSessionTimeout, zkConnectionTimeout, new ZkStringSerializer()); |
| ZkConnection connection = new ZkConnection(zookeeperConnect, zkSessionTimeout); |
| zkUtils = new ZkUtils(zkClient, connection, false); |
| } |
| |
| /** |
| * Shutdown Zookeeper. |
| */ |
| public void tearDown() throws IOException { |
| if (zkUtils != null) { |
| zkUtils.close(); |
| zkUtils = null; |
| } |
| if (zookeeper != null) { |
| zookeeper.shutdown(); |
| zookeeper = null; |
| } |
| } |
| } |