| /** |
| * 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 com.datatorrent.lib.partitioner; |
| |
| import java.util.Collection; |
| import java.util.List; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import com.google.common.collect.Lists; |
| |
| import com.datatorrent.api.Context.OperatorContext; |
| import com.datatorrent.api.DefaultOutputPort; |
| import com.datatorrent.api.DefaultPartition; |
| import com.datatorrent.api.Operator; |
| import com.datatorrent.api.Operator.InputPort; |
| import com.datatorrent.api.Partitioner; |
| import com.datatorrent.api.Partitioner.Partition; |
| import com.datatorrent.api.StringCodec.Object2String; |
| import com.datatorrent.common.partitioner.StatelessPartitioner; |
| import com.datatorrent.lib.util.TestUtils; |
| |
| public class StatelessPartitionerTest |
| { |
| public static class DummyOperator implements Operator |
| { |
| public final DefaultOutputPort<Integer> output = new DefaultOutputPort<Integer>(); |
| |
| private Integer value; |
| |
| public DummyOperator() |
| { |
| } |
| |
| public DummyOperator(Integer value) |
| { |
| this.value = value; |
| } |
| |
| @Override |
| public void beginWindow(long windowId) |
| { |
| //Do nothing |
| } |
| |
| @Override |
| public void endWindow() |
| { |
| //Do nothing |
| } |
| |
| @Override |
| public void setup(OperatorContext context) |
| { |
| //Do nothing |
| } |
| |
| @Override |
| public void teardown() |
| { |
| //Do nothing |
| } |
| |
| public void setValue(int value) |
| { |
| this.value = value; |
| } |
| |
| public int getValue() |
| { |
| return value; |
| } |
| } |
| |
| @Test |
| public void partition1Test() |
| { |
| DummyOperator dummyOperator = new DummyOperator(5); |
| StatelessPartitioner<DummyOperator> statelessPartitioner = new StatelessPartitioner<DummyOperator>(); |
| |
| Collection<Partition<DummyOperator>> partitions = Lists.newArrayList(); |
| DefaultPartition<DummyOperator> defaultPartition = new DefaultPartition<DummyOperator>(dummyOperator); |
| partitions.add(defaultPartition); |
| |
| Collection<Partition<DummyOperator>> newPartitions = statelessPartitioner.definePartitions(partitions, new PartitioningContextImpl(null, 0)); |
| Assert.assertEquals("Incorrect number of partitions", 1, newPartitions.size()); |
| |
| for (Partition<DummyOperator> partition : newPartitions) { |
| Assert.assertEquals("Incorrect cloned value", 5, partition.getPartitionedInstance().getValue()); |
| } |
| } |
| |
| @Test |
| public void partition5Test() |
| { |
| DummyOperator dummyOperator = new DummyOperator(5); |
| StatelessPartitioner<DummyOperator> statelessPartitioner = new StatelessPartitioner<DummyOperator>(5); |
| |
| Collection<Partition<DummyOperator>> partitions = Lists.newArrayList(); |
| DefaultPartition<DummyOperator> defaultPartition = new DefaultPartition<DummyOperator>(dummyOperator); |
| partitions.add(defaultPartition); |
| |
| Collection<Partition<DummyOperator>> newPartitions = statelessPartitioner.definePartitions(partitions, new PartitioningContextImpl(null, 0)); |
| Assert.assertEquals("Incorrect number of partitions", 5, newPartitions.size()); |
| |
| for (Partition<DummyOperator> partition : newPartitions) { |
| Assert.assertEquals("Incorrect cloned value", 5, partition.getPartitionedInstance().getValue()); |
| } |
| } |
| |
| @Test |
| public void objectPropertyTest() |
| { |
| Object2String<StatelessPartitioner<DummyOperator>> propertyReader = new Object2String<StatelessPartitioner<DummyOperator>>(); |
| StatelessPartitioner<DummyOperator> partitioner = propertyReader.fromString(StatelessPartitioner.class.getName() + ":3"); |
| Assert.assertEquals(3, partitioner.getPartitionCount()); |
| } |
| |
| @Test |
| public void testParallelPartitionScaleUP() |
| { |
| DummyOperator dummyOperator = new DummyOperator(5); |
| StatelessPartitioner<DummyOperator> statelessPartitioner = new StatelessPartitioner<DummyOperator>(); |
| |
| TestUtils.MockBatchedOperatorStats mockStats = new TestUtils.MockBatchedOperatorStats(2); |
| mockStats.operatorStats = Lists.newArrayList(); |
| |
| Collection<Partition<DummyOperator>> partitions = Lists.newArrayList(); |
| |
| DefaultPartition<DummyOperator> defaultPartition = new DefaultPartition<DummyOperator>(dummyOperator); |
| TestUtils.MockPartition<DummyOperator> mockPartition = new TestUtils.MockPartition<DummyOperator>(defaultPartition, mockStats); |
| |
| partitions.add(mockPartition); |
| |
| Collection<Partition<DummyOperator>> newPartitions = statelessPartitioner.definePartitions(partitions, |
| new PartitioningContextImpl(null, 5)); |
| Assert.assertEquals("after partition", 5, newPartitions.size()); |
| } |
| |
| @Test |
| public void testParallelPartitionScaleDown() |
| { |
| DummyOperator dummyOperator = new DummyOperator(5); |
| StatelessPartitioner<DummyOperator> statelessPartitioner = new StatelessPartitioner<DummyOperator>(); |
| |
| TestUtils.MockBatchedOperatorStats mockStats = new TestUtils.MockBatchedOperatorStats(2); |
| mockStats.operatorStats = Lists.newArrayList(); |
| |
| Collection<Partition<DummyOperator>> partitions = Lists.newArrayList(); |
| |
| for (int i = 5; i-- > 0; ) { |
| DefaultPartition<DummyOperator> defaultPartition = new DefaultPartition<DummyOperator>(dummyOperator); |
| TestUtils.MockPartition<DummyOperator> mockPartition = new TestUtils.MockPartition<DummyOperator>(defaultPartition, mockStats); |
| |
| partitions.add(mockPartition); |
| } |
| |
| Collection<Partition<DummyOperator>> newPartitions = statelessPartitioner.definePartitions(partitions, |
| new PartitioningContextImpl(null, 1)); |
| Assert.assertEquals("after partition", 1, newPartitions.size()); |
| } |
| |
| public static class PartitioningContextImpl implements Partitioner.PartitioningContext |
| { |
| final int parallelPartitionCount; |
| final List<InputPort<?>> ports; |
| |
| public PartitioningContextImpl(List<InputPort<?>> ports, int parallelPartitionCount) |
| { |
| this.ports = ports; |
| this.parallelPartitionCount = parallelPartitionCount; |
| } |
| |
| @Override |
| public int getParallelPartitionCount() |
| { |
| return parallelPartitionCount; |
| } |
| |
| @Override |
| public List<InputPort<?>> getInputPorts() |
| { |
| return ports; |
| } |
| } |
| |
| } |