| /** |
| * 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.storm.streams; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import org.apache.storm.shade.com.google.common.collect.Multimap; |
| import org.apache.storm.shade.org.jgrapht.DirectedGraph; |
| import org.apache.storm.shade.org.jgrapht.graph.DefaultDirectedGraph; |
| import org.apache.storm.state.KeyValueState; |
| import org.apache.storm.streams.operations.StateUpdater; |
| import org.apache.storm.streams.processors.Processor; |
| import org.apache.storm.streams.processors.UpdateStateByKeyProcessor; |
| import org.apache.storm.task.OutputCollector; |
| import org.apache.storm.task.TopologyContext; |
| import org.apache.storm.tuple.Fields; |
| import org.apache.storm.tuple.Tuple; |
| import org.apache.storm.tuple.Values; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.mockito.ArgumentCaptor; |
| import org.mockito.Mockito; |
| |
| import static org.junit.Assert.assertArrayEquals; |
| import static org.junit.Assert.assertEquals; |
| |
| /** |
| * Unit tests for {@link StatefulProcessorBolt} |
| */ |
| public class StatefulProcessorBoltTest { |
| TopologyContext mockTopologyContext; |
| OutputCollector mockOutputCollector; |
| StatefulProcessorBolt<String, Long> bolt; |
| Tuple mockTuple1; |
| DirectedGraph<Node, Edge> graph; |
| Multimap<String, ProcessorNode> mockStreamToProcessors; |
| KeyValueState<String, Long> mockKeyValueState; |
| |
| @Before |
| public void setUp() throws Exception { |
| mockTopologyContext = Mockito.mock(TopologyContext.class); |
| mockOutputCollector = Mockito.mock(OutputCollector.class); |
| mockTuple1 = Mockito.mock(Tuple.class); |
| mockStreamToProcessors = Mockito.mock(Multimap.class); |
| mockKeyValueState = Mockito.mock(KeyValueState.class); |
| setUpMockTuples(mockTuple1); |
| } |
| |
| @Test |
| public void testEmitAndAck() throws Exception { |
| setUpStatefulProcessorBolt(new UpdateStateByKeyProcessor<>(new StateUpdater<Object, Long>() { |
| @Override |
| public Long init() { |
| return 0L; |
| } |
| |
| @Override |
| public Long apply(Long state, Object value) { |
| return state + 1; |
| } |
| })); |
| bolt.execute(mockTuple1); |
| ArgumentCaptor<Collection> anchor = ArgumentCaptor.forClass(Collection.class); |
| ArgumentCaptor<Values> values = ArgumentCaptor.forClass(Values.class); |
| ArgumentCaptor<String> os = ArgumentCaptor.forClass(String.class); |
| Mockito.verify(mockOutputCollector).emit(os.capture(), anchor.capture(), values.capture()); |
| assertEquals("outputstream", os.getValue()); |
| assertArrayEquals(new Object[]{ mockTuple1 }, anchor.getValue().toArray()); |
| assertEquals(new Values("k", 1L), values.getValue()); |
| Mockito.verify(mockOutputCollector, Mockito.times(1)).ack(mockTuple1); |
| Mockito.verify(mockKeyValueState, Mockito.times(1)).put("k", 1L); |
| } |
| |
| private void setUpStatefulProcessorBolt(Processor<?> processor) { |
| ProcessorNode node = new ProcessorNode(processor, "outputstream", new Fields("value")); |
| node.setEmitsPair(true); |
| Mockito.when(mockStreamToProcessors.get(Mockito.anyString())).thenReturn(Collections.singletonList(node)); |
| graph = new DefaultDirectedGraph(new StreamsEdgeFactory()); |
| graph.addVertex(node); |
| bolt = new StatefulProcessorBolt<>("bolt1", graph, Collections.singletonList(node)); |
| bolt.setStreamToInitialProcessors(mockStreamToProcessors); |
| bolt.prepare(new HashMap<>(), mockTopologyContext, mockOutputCollector); |
| bolt.initState(mockKeyValueState); |
| } |
| |
| private void setUpMockTuples(Tuple... tuples) { |
| for (Tuple tuple : tuples) { |
| Mockito.when(tuple.size()).thenReturn(1); |
| Mockito.when(tuple.getValue(0)).thenReturn(Pair.of("k", "v")); |
| Mockito.when(tuple.getSourceComponent()).thenReturn("bolt0"); |
| Mockito.when(tuple.getSourceStreamId()).thenReturn("inputstream"); |
| } |
| } |
| } |