| /* |
| * 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.ignite.stream.kafka; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Properties; |
| import java.util.concurrent.TimeoutException; |
| import kafka.server.KafkaConfig; |
| import kafka.server.KafkaServer; |
| import kafka.utils.TestUtils; |
| import kafka.utils.ZkUtils; |
| import kafka.zk.KafkaZkClient; |
| import org.I0Itec.zkclient.ZkClient; |
| import org.I0Itec.zkclient.ZkConnection; |
| import org.apache.curator.test.TestingServer; |
| import org.apache.ignite.internal.util.typedef.internal.U; |
| import org.apache.kafka.clients.producer.KafkaProducer; |
| import org.apache.kafka.clients.producer.Producer; |
| import org.apache.kafka.clients.producer.ProducerConfig; |
| import org.apache.kafka.clients.producer.ProducerRecord; |
| import org.apache.kafka.common.serialization.StringSerializer; |
| import org.apache.kafka.common.utils.SystemTime; |
| import scala.Tuple2; |
| |
| /** |
| * Kafka Test Broker. |
| */ |
| public class TestKafkaBroker { |
| /** ZooKeeper connection timeout. */ |
| private static final int ZK_CONNECTION_TIMEOUT = 6000; |
| |
| /** ZooKeeper session timeout. */ |
| private static final int ZK_SESSION_TIMEOUT = 6000; |
| |
| /** ZooKeeper port. */ |
| private static final int ZK_PORT = 21811; |
| |
| /** Broker host. */ |
| private static final String BROKER_HOST = "localhost"; |
| |
| /** Broker port. */ |
| private static final int BROKER_PORT = 11092; |
| |
| /** Kafka config. */ |
| private KafkaConfig kafkaCfg; |
| |
| /** Kafka server. */ |
| private KafkaServer kafkaSrv; |
| |
| /** ZooKeeper. */ |
| private TestingServer zkServer; |
| |
| /** Kafka Zookeeper utils. */ |
| private ZkUtils zkUtils; |
| |
| /** |
| * Kafka broker constructor. |
| */ |
| public TestKafkaBroker() { |
| try { |
| setupZooKeeper(); |
| |
| setupKafkaServer(); |
| } |
| catch (Exception e) { |
| throw new RuntimeException("Failed to start Kafka: " + e); |
| } |
| } |
| |
| /** |
| * Creates a topic. |
| * |
| * @param topic Topic name. |
| * @param partitions Number of partitions for the topic. |
| * @param replicationFactor Replication factor. |
| * @throws TimeoutException If operation is timed out. |
| * @throws InterruptedException If interrupted. |
| */ |
| public void createTopic(String topic, int partitions, int replicationFactor) |
| throws TimeoutException, InterruptedException { |
| List<KafkaServer> servers = new ArrayList<>(); |
| |
| servers.add(kafkaSrv); |
| |
| KafkaZkClient client = kafkaSrv.zkClient(); |
| |
| TestUtils.createTopic(client, topic, partitions, replicationFactor, |
| scala.collection.JavaConversions.asScalaBuffer(servers), new Properties()); |
| } |
| |
| /** |
| * Sends a message to Kafka broker. |
| * |
| * @param records List of records. |
| * @return Producer used to send the message. |
| */ |
| public void sendMessages(List<ProducerRecord<String, String>> records) { |
| Producer<String, String> producer = new KafkaProducer<>(getProducerConfig()); |
| |
| for (ProducerRecord<String, String> rec : records) |
| producer.send(rec); |
| |
| producer.flush(); |
| producer.close(); |
| } |
| |
| /** |
| * Shuts down test Kafka broker. |
| */ |
| public void shutdown() { |
| if (zkUtils != null) |
| zkUtils.close(); |
| |
| if (kafkaSrv != null) |
| kafkaSrv.shutdown(); |
| |
| if (zkServer != null) { |
| try { |
| zkServer.stop(); |
| } |
| catch (IOException ignored) { |
| // No-op. |
| } |
| } |
| |
| List<String> logDirs = scala.collection.JavaConversions.seqAsJavaList(kafkaCfg.logDirs()); |
| |
| for (String logDir : logDirs) |
| U.delete(new File(logDir)); |
| } |
| |
| /** |
| * Sets up test Kafka broker. |
| * |
| * @throws IOException If failed. |
| */ |
| private void setupKafkaServer() throws IOException { |
| kafkaCfg = new KafkaConfig(getKafkaConfig()); |
| |
| kafkaSrv = TestUtils.createServer(kafkaCfg, new SystemTime()); |
| |
| kafkaSrv.startup(); |
| } |
| |
| /** |
| * Sets up ZooKeeper test server. |
| * |
| * @throws Exception If failed. |
| */ |
| private void setupZooKeeper() throws Exception { |
| zkServer = new TestingServer(ZK_PORT, true); |
| |
| Tuple2<ZkClient, ZkConnection> zkTuple = ZkUtils.createZkClientAndConnection(zkServer.getConnectString(), |
| ZK_SESSION_TIMEOUT, ZK_CONNECTION_TIMEOUT); |
| |
| zkUtils = new ZkUtils(zkTuple._1(), zkTuple._2(), false); |
| } |
| |
| /** |
| * Obtains Kafka config. |
| * |
| * @return Kafka config. |
| * @throws IOException If failed. |
| */ |
| private Properties getKafkaConfig() throws IOException { |
| Properties props = new Properties(); |
| |
| props.put("broker.id", "0"); |
| props.put("zookeeper.connect", zkServer.getConnectString()); |
| props.put("host.name", BROKER_HOST); |
| props.put("port", BROKER_PORT); |
| props.put("offsets.topic.replication.factor", "1"); |
| props.put("log.dir", createTmpDir("_cfg").getAbsolutePath()); |
| props.put("log.flush.interval.messages", "1"); |
| props.put("log.flush.interval.ms", "10"); |
| |
| return props; |
| } |
| |
| /** |
| * Obtains broker address. |
| * |
| * @return Kafka broker address. |
| */ |
| public String getBrokerAddress() { |
| return BROKER_HOST + ":" + BROKER_PORT; |
| } |
| |
| /** |
| * Obtains producer config. |
| * |
| * @return Kafka Producer config. |
| */ |
| private Properties getProducerConfig() { |
| Properties props = new Properties(); |
| |
| props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, getBrokerAddress()); |
| props.put(ProducerConfig.CLIENT_ID_CONFIG, "KafkaTestProducer"); |
| props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class.getName()); |
| props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class.getName()); |
| |
| return props; |
| } |
| |
| /** |
| * Creates temporary directory. |
| * |
| * @param prefix Prefix. |
| * @return Created file. |
| * @throws IOException If failed. |
| */ |
| private static File createTmpDir(String prefix) throws IOException { |
| Path path = Files.createTempDirectory(prefix); |
| |
| return path.toFile(); |
| } |
| } |