shanthoosh commented on a change in pull request #951: SAMZA-2127: Upgrade to Kafka 2.0 URL: https://github.com/apache/samza/pull/951#discussion_r268386127
########## File path: samza-test/src/test/java/org/apache/samza/test/harness/IntegrationTestHarness.java ########## @@ -0,0 +1,192 @@ +/* + * 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.samza.test.harness; + +import com.google.common.collect.ImmutableMap; +import java.util.Collection; +import java.util.Collections; +import java.util.HashMap; +import java.util.Map; +import java.util.Optional; +import java.util.Properties; +import java.util.concurrent.TimeUnit; +import org.apache.kafka.clients.admin.AdminClient; +import org.apache.kafka.clients.admin.CreatePartitionsResult; +import org.apache.kafka.clients.admin.CreateTopicsResult; +import org.apache.kafka.clients.admin.DeleteTopicsResult; +import org.apache.kafka.clients.admin.NewPartitions; +import org.apache.kafka.clients.admin.NewTopic; +import org.apache.kafka.clients.consumer.KafkaConsumer; +import org.apache.kafka.clients.producer.KafkaProducer; +import org.apache.kafka.common.serialization.ByteArrayDeserializer; +import org.apache.kafka.common.serialization.ByteArraySerializer; +import org.apache.kafka.common.serialization.Deserializer; +import org.apache.kafka.common.serialization.Serializer; +import org.apache.kafka.common.serialization.StringDeserializer; +import org.apache.kafka.common.serialization.StringSerializer; +import org.apache.samza.config.Config; +import org.apache.samza.config.JobConfig; +import org.apache.samza.config.KafkaConsumerConfig; +import org.apache.samza.config.MapConfig; +import org.apache.samza.context.ExternalContext; +import org.apache.samza.runtime.ApplicationRunner; +import org.apache.samza.system.kafka.KafkaSystemAdmin; +import org.apache.samza.system.kafka.KafkaSystemConsumer; + +import static org.apache.kafka.clients.consumer.ConsumerConfig.*; + + +public class IntegrationTestHarness extends AbstractKafkaServerTestHarness { + private static final ByteArraySerializer BYTE_ARRAY_SERIALIZER = new ByteArraySerializer(); + private static final ByteArrayDeserializer BYTE_ARRAY_DESERIALIZER = new ByteArrayDeserializer(); + + protected static final Serializer<String> STRING_SERIALIZER = new StringSerializer(); + protected static final Deserializer<String> STRING_DESERIALIZER = new StringDeserializer(); + + private AdminClient adminClient; + protected KafkaConsumer consumer; + protected KafkaProducer producer; + protected KafkaSystemAdmin systemAdmin; + + /** + * Starts a single kafka broker, and a single embedded zookeeper server in their own threads. + * Sub-classes should invoke {@link #zkConnect()} and {@link #bootstrapUrl()}s to + * obtain the urls (and ports) of the started zookeeper and kafka broker. + */ + @Override + public void setUp() { + super.setUp(); + producer = createProducer(); + consumer = createConsumer(); + + Properties kafkaConfig = new Properties(); + kafkaConfig.setProperty("bootstrap.servers", bootstrapServers()); + adminClient = AdminClient.create(kafkaConfig); + + systemAdmin = createSystemAdmin("kafka"); + systemAdmin.start(); + } + + /** + * Shutdown and clear Zookeeper and Kafka broker state. + */ + @Override + public void tearDown() { + systemAdmin.stop(); + + /* + * Close joins on AdminClientRunnable thread and at times, it takes longer than the test timeouts, resulting + * in test failures. Using a bounded close ensures tests passes successfully. Note, in the event of timeout, + * close notifies AdminClientRunnable thread which in turn closes the underlying client quietly and + * it shouldn't impact the tests nor have any side effects. + */ + adminClient.close(10000, TimeUnit.MILLISECONDS); + consumer.close(); + producer.close(); + super.tearDown(); + } + + /** + * Returns the bootstrap servers configuration string to be used by clients. + * + * @return bootstrap servers string. + */ + protected String bootstrapServers() { + return bootstrapUrl(); + } + + protected KafkaProducer createProducer() { + Properties kafkaConfig = new Properties(); + kafkaConfig.setProperty("bootstrap.servers", bootstrapServers()); + return new KafkaProducer<>(kafkaConfig, STRING_SERIALIZER, BYTE_ARRAY_SERIALIZER); + } + + protected KafkaConsumer createConsumer() { + Properties consumerProps = new Properties(); + consumerProps.setProperty("bootstrap.servers", bootstrapServers()); + consumerProps.setProperty("group.id", "group"); + consumerProps.setProperty("auto.offset.reset", "earliest"); + return new KafkaConsumer<>(consumerProps, STRING_DESERIALIZER, BYTE_ARRAY_DESERIALIZER); + } + + protected void executeRun(ApplicationRunner applicationRunner, Config config) { + applicationRunner.run(buildExternalContext(config).orElse(null)); + } + + protected boolean createTopic(String topicName, int numPartitions, int replicationFactor) { + return createTopics(Collections.singleton(new NewTopic(topicName, numPartitions, (short) replicationFactor))); + } + + protected boolean createTopics(Collection<NewTopic> newTopics) { + boolean createStatus = true; + + try { + CreateTopicsResult resultFuture = + adminClient.createTopics(newTopics); + // wait for 10 seconds to make sure the topic is created if not + resultFuture.all().get(10000, TimeUnit.MILLISECONDS); + } catch (Exception e) { + createStatus = false; + } + + return createStatus; + } + + protected boolean deleteTopics(Collection<String> topics) { + boolean deleteStatus = true; + + try { + DeleteTopicsResult resultFutures = adminClient.deleteTopics(topics); + resultFutures.all().get(10000, TimeUnit.MILLISECONDS); Review comment: Would be better to take time-out, time-unit as argument. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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