| /* |
| * 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.atlas.kafka; |
| |
| import com.google.inject.Inject; |
| import kafka.consumer.KafkaStream; |
| import kafka.javaapi.consumer.ConsumerConnector; |
| import kafka.serializer.StringDecoder; |
| import org.apache.atlas.AtlasException; |
| import org.apache.atlas.notification.NotificationConsumer; |
| import org.apache.atlas.notification.NotificationInterface; |
| import org.apache.atlas.notification.NotificationModule; |
| import org.apache.commons.configuration.Configuration; |
| import org.apache.kafka.clients.consumer.ConsumerConfig; |
| import org.testng.annotations.AfterClass; |
| import org.testng.annotations.BeforeClass; |
| import org.testng.annotations.Guice; |
| import org.testng.annotations.Test; |
| |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Properties; |
| |
| import static org.mockito.Matchers.any; |
| import static org.mockito.Matchers.eq; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.when; |
| import static org.testng.Assert.assertEquals; |
| import static org.testng.Assert.assertTrue; |
| |
| @Guice(modules = NotificationModule.class) |
| public class KafkaNotificationTest { |
| |
| @Inject |
| private KafkaNotification kafka; |
| |
| @BeforeClass |
| public void setUp() throws Exception { |
| kafka.start(); |
| } |
| |
| @Test |
| @SuppressWarnings("unchecked") |
| public void testCreateConsumers() throws Exception { |
| Configuration configuration = mock(Configuration.class); |
| Iterator iterator = mock(Iterator.class); |
| ConsumerConnector consumerConnector = mock(ConsumerConnector.class); |
| KafkaStream kafkaStream1 = mock(KafkaStream.class); |
| KafkaStream kafkaStream2 = mock(KafkaStream.class); |
| String groupId = "groupId9999"; |
| |
| when(configuration.subset(KafkaNotification.PROPERTY_PREFIX)).thenReturn(configuration); |
| when(configuration.getKeys()).thenReturn(iterator); |
| when(iterator.hasNext()).thenReturn(true).thenReturn(false); |
| when(iterator.next()).thenReturn("entities." + KafkaNotification.CONSUMER_GROUP_ID_PROPERTY); |
| when(configuration.getList("entities." + KafkaNotification.CONSUMER_GROUP_ID_PROPERTY)) |
| .thenReturn(Collections.<Object>singletonList(groupId)); |
| |
| Map<String, List<KafkaStream<String, String>>> streamsMap = new HashMap<>(); |
| List<KafkaStream<String, String>> kafkaStreamList = new LinkedList<>(); |
| kafkaStreamList.add(kafkaStream1); |
| kafkaStreamList.add(kafkaStream2); |
| streamsMap.put(KafkaNotification.ATLAS_ENTITIES_TOPIC, kafkaStreamList); |
| Map<String, Integer> topicCountMap = new HashMap<>(); |
| topicCountMap.put(KafkaNotification.ATLAS_ENTITIES_TOPIC, 2); |
| |
| when(consumerConnector.createMessageStreams( |
| eq(topicCountMap), any(StringDecoder.class), any(StringDecoder.class))).thenReturn(streamsMap); |
| |
| TestKafkaNotification kafkaNotification = new TestKafkaNotification(configuration, consumerConnector); |
| |
| List<NotificationConsumer<String>> consumers = |
| kafkaNotification.createConsumers(NotificationInterface.NotificationType.ENTITIES, 2); |
| |
| assertEquals(2, consumers.size()); |
| |
| // assert that all of the given kafka streams were used to create kafka consumers |
| List<KafkaStream> streams = kafkaNotification.kafkaStreams; |
| assertTrue(streams.contains(kafkaStream1)); |
| assertTrue(streams.contains(kafkaStream2)); |
| |
| // assert that the given consumer group id was added to the properties used to create the consumer connector |
| Properties properties = kafkaNotification.consumerProperties; |
| assertEquals(groupId, properties.getProperty(ConsumerConfig.GROUP_ID_CONFIG)); |
| } |
| |
| @AfterClass |
| public void teardown() throws Exception { |
| kafka.stop(); |
| } |
| |
| // Extended kafka notification class for testing. |
| private static class TestKafkaNotification extends KafkaNotification { |
| |
| private final ConsumerConnector consumerConnector; |
| |
| private Properties consumerProperties; |
| private List<KafkaStream> kafkaStreams = new LinkedList<>(); |
| |
| public TestKafkaNotification(Configuration applicationProperties, |
| ConsumerConnector consumerConnector) throws AtlasException { |
| super(applicationProperties); |
| this.consumerConnector = consumerConnector; |
| } |
| |
| @Override |
| protected ConsumerConnector createConsumerConnector(Properties properties) { |
| this.consumerProperties = properties; |
| kafkaStreams.clear(); |
| return consumerConnector; |
| } |
| |
| @Override |
| protected <T> org.apache.atlas.kafka.KafkaConsumer<T> createKafkaConsumer(Class<T> type, KafkaStream stream, |
| int consumerId) { |
| kafkaStreams.add(stream); |
| return super.createKafkaConsumer(type, stream, consumerId); |
| } |
| } |
| } |