| /** |
| * 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.heron.bolts.kafka; |
| |
| import java.util.Collections; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Future; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.mockito.Mock; |
| import org.mockito.runners.MockitoJUnitRunner; |
| import org.mockito.stubbing.Answer; |
| |
| import org.apache.heron.api.Config; |
| import org.apache.heron.api.bolt.OutputCollector; |
| import org.apache.heron.api.tuple.Tuple; |
| import org.apache.kafka.clients.producer.Callback; |
| import org.apache.kafka.clients.producer.Producer; |
| import org.apache.kafka.clients.producer.ProducerRecord; |
| import org.apache.kafka.clients.producer.RecordMetadata; |
| import org.apache.kafka.common.KafkaException; |
| |
| import static org.apache.heron.api.Config.TopologyReliabilityMode.ATLEAST_ONCE; |
| import static org.apache.heron.api.Config.TopologyReliabilityMode.ATMOST_ONCE; |
| import static org.apache.heron.api.Config.TopologyReliabilityMode.EFFECTIVELY_ONCE; |
| import static org.mockito.Matchers.any; |
| import static org.mockito.Matchers.eq; |
| import static org.mockito.Mockito.verify; |
| import static org.mockito.Mockito.when; |
| |
| @RunWith(MockitoJUnitRunner.class) |
| public class KafkaBoltTest { |
| @Mock |
| private KafkaProducerFactory<String, byte[]> kafkaProducerFactory; |
| @Mock |
| private Producer<String, byte[]> producer; |
| @Mock |
| private TupleTransformer<String, byte[]> tupleTransformer; |
| @Mock |
| private OutputCollector outputCollector; |
| @Mock |
| private Tuple tuple; |
| @Mock |
| private Future<RecordMetadata> future; |
| private KafkaBolt<String, byte[]> kafkaBolt; |
| |
| @Before |
| public void setUp() { |
| when(kafkaProducerFactory.create()).thenReturn(producer); |
| kafkaBolt = new KafkaBolt<>(kafkaProducerFactory, tupleTransformer); |
| } |
| |
| @Test |
| public void cleanup() { |
| kafkaBolt.prepare(Collections.emptyMap(), null, outputCollector); |
| kafkaBolt.cleanup(); |
| verify(producer).close(); |
| } |
| |
| @Test |
| public void executeATLEASTONCE() { |
| kafkaBolt.prepare(Collections.singletonMap(Config.TOPOLOGY_RELIABILITY_MODE, ATLEAST_ONCE), |
| null, outputCollector); |
| when(tupleTransformer.transformToKey(tuple)).thenReturn("key"); |
| byte[] value = new byte[]{1, 2, 3}; |
| when(tupleTransformer.transformToValue(tuple)).thenReturn(value); |
| when(tupleTransformer.getTopicName(tuple)).thenReturn("topic"); |
| |
| ProducerRecord<String, byte[]> producerRecord = new ProducerRecord<>("topic", "key", value); |
| when(producer.send(eq(producerRecord), any(Callback.class))) |
| .then((Answer<Future<RecordMetadata>>) invocationOnMock -> { |
| invocationOnMock.getArgumentAt(1, Callback.class) |
| .onCompletion(new RecordMetadata(null, 0, 0, 0, null, 0, 0), null); |
| return future; |
| }); |
| kafkaBolt.execute(tuple); |
| verify(outputCollector).ack(tuple); |
| |
| when(producer.send(eq(producerRecord), any(Callback.class))) |
| .then((Answer<Future<RecordMetadata>>) invocationOnMock -> { |
| invocationOnMock.getArgumentAt(1, Callback.class) |
| .onCompletion(new RecordMetadata(null, 0, 0, 0, null, 0, 0), new Exception()); |
| return future; |
| }); |
| kafkaBolt.execute(tuple); |
| verify(outputCollector).fail(tuple); |
| } |
| |
| @Test(expected = KafkaException.class) |
| public void executeEFFECTIVEONCE() throws ExecutionException, InterruptedException { |
| kafkaBolt.prepare(Collections.singletonMap(Config.TOPOLOGY_RELIABILITY_MODE, EFFECTIVELY_ONCE), |
| null, outputCollector); |
| when(tupleTransformer.transformToKey(tuple)).thenReturn("key"); |
| byte[] value = new byte[]{1, 2, 3}; |
| when(tupleTransformer.transformToValue(tuple)).thenReturn(value); |
| when(tupleTransformer.getTopicName(tuple)).thenReturn("topic"); |
| |
| ProducerRecord<String, byte[]> producerRecord = new ProducerRecord<>("topic", "key", value); |
| when(producer.send(producerRecord)).thenReturn(future); |
| kafkaBolt.execute(tuple); |
| verify(future).get(); |
| |
| when(future.get()).thenThrow(ExecutionException.class); |
| kafkaBolt.execute(tuple); |
| } |
| |
| @Test |
| public void executeATMOSTONCE() { |
| kafkaBolt.prepare(Collections.singletonMap(Config.TOPOLOGY_RELIABILITY_MODE, ATMOST_ONCE), |
| null, outputCollector); |
| when(tupleTransformer.transformToKey(tuple)).thenReturn("key"); |
| byte[] value = new byte[]{1, 2, 3}; |
| when(tupleTransformer.transformToValue(tuple)).thenReturn(value); |
| when(tupleTransformer.getTopicName(tuple)).thenReturn("topic"); |
| |
| ProducerRecord<String, byte[]> producerRecord = new ProducerRecord<>("topic", "key", value); |
| kafkaBolt.execute(tuple); |
| verify(producer).send(eq(producerRecord), any(Callback.class)); |
| } |
| } |