org.apache.flink.runtime.jobgraph.JobTaskVertexTest.java Source code

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Here is the source code for org.apache.flink.runtime.jobgraph.JobTaskVertexTest.java

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/*
 * 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.flink.runtime.jobgraph;

import org.apache.commons.lang3.SerializationUtils;
import org.apache.flink.api.common.io.GenericInputFormat;
import org.apache.flink.api.common.io.InitializeOnMaster;
import org.apache.flink.api.common.io.InputFormat;
import org.apache.flink.api.common.io.OutputFormat;
import org.apache.flink.api.common.operators.util.UserCodeObjectWrapper;
import org.apache.flink.api.java.io.DiscardingOutputFormat;
import org.apache.flink.core.io.GenericInputSplit;
import org.apache.flink.core.io.InputSplit;
import org.apache.flink.runtime.io.network.partition.ResultPartitionType;
import org.apache.flink.runtime.operators.util.TaskConfig;
import org.junit.Test;

import java.io.IOException;

import static org.junit.Assert.*;

@SuppressWarnings("serial")
public class JobTaskVertexTest {

    @Test
    public void testConnectDirectly() {
        JobVertex source = new JobVertex("source");
        JobVertex target = new JobVertex("target");
        target.connectNewDataSetAsInput(source, DistributionPattern.POINTWISE, ResultPartitionType.PIPELINED);

        assertTrue(source.isInputVertex());
        assertFalse(source.isOutputVertex());
        assertFalse(target.isInputVertex());
        assertTrue(target.isOutputVertex());

        assertEquals(1, source.getNumberOfProducedIntermediateDataSets());
        assertEquals(1, target.getNumberOfInputs());

        assertEquals(target.getInputs().get(0).getSource(), source.getProducedDataSets().get(0));

        assertEquals(1, source.getProducedDataSets().get(0).getConsumers().size());
        assertEquals(target, source.getProducedDataSets().get(0).getConsumers().get(0).getTarget());
    }

    @Test
    public void testConnectMultipleTargets() {
        JobVertex source = new JobVertex("source");
        JobVertex target1 = new JobVertex("target1");
        JobVertex target2 = new JobVertex("target2");
        target1.connectNewDataSetAsInput(source, DistributionPattern.POINTWISE, ResultPartitionType.PIPELINED);
        target2.connectDataSetAsInput(source.getProducedDataSets().get(0), DistributionPattern.ALL_TO_ALL);

        assertTrue(source.isInputVertex());
        assertFalse(source.isOutputVertex());
        assertFalse(target1.isInputVertex());
        assertTrue(target1.isOutputVertex());
        assertFalse(target2.isInputVertex());
        assertTrue(target2.isOutputVertex());

        assertEquals(1, source.getNumberOfProducedIntermediateDataSets());
        assertEquals(2, source.getProducedDataSets().get(0).getConsumers().size());

        assertEquals(target1.getInputs().get(0).getSource(), source.getProducedDataSets().get(0));
        assertEquals(target2.getInputs().get(0).getSource(), source.getProducedDataSets().get(0));
    }

    @Test
    public void testOutputFormatVertex() {
        try {
            final TestingOutputFormat outputFormat = new TestingOutputFormat();
            final OutputFormatVertex of = new OutputFormatVertex("Name");
            new TaskConfig(of.getConfiguration())
                    .setStubWrapper(new UserCodeObjectWrapper<OutputFormat<?>>(outputFormat));
            final ClassLoader cl = getClass().getClassLoader();

            try {
                of.initializeOnMaster(cl);
                fail("Did not throw expected exception.");
            } catch (TestException e) {
                // all good
            }

            OutputFormatVertex copy = SerializationUtils.clone(of);
            try {
                copy.initializeOnMaster(cl);
                fail("Did not throw expected exception.");
            } catch (TestException e) {
                // all good
            }
        } catch (Exception e) {
            e.printStackTrace();
            fail(e.getMessage());
        }
    }

    @Test
    public void testInputFormatVertex() {
        try {
            final TestInputFormat inputFormat = new TestInputFormat();
            final InputFormatVertex vertex = new InputFormatVertex("Name");
            new TaskConfig(vertex.getConfiguration())
                    .setStubWrapper(new UserCodeObjectWrapper<InputFormat<?, ?>>(inputFormat));

            final ClassLoader cl = getClass().getClassLoader();

            vertex.initializeOnMaster(cl);
            InputSplit[] splits = vertex.getInputSplitSource().createInputSplits(77);

            assertNotNull(splits);
            assertEquals(1, splits.length);
            assertEquals(TestSplit.class, splits[0].getClass());
        } catch (Exception e) {
            e.printStackTrace();
            fail(e.getMessage());
        }
    }

    // --------------------------------------------------------------------------------------------

    private static final class TestingOutputFormat extends DiscardingOutputFormat<Object>
            implements InitializeOnMaster {
        @Override
        public void initializeGlobal(int parallelism) throws IOException {
            throw new TestException();
        }
    }

    private static final class TestException extends IOException {
    }

    // --------------------------------------------------------------------------------------------

    private static final class TestSplit extends GenericInputSplit {

        public TestSplit(int partitionNumber, int totalNumberOfPartitions) {
            super(partitionNumber, totalNumberOfPartitions);
        }
    }

    private static final class TestInputFormat extends GenericInputFormat<Object> {

        @Override
        public boolean reachedEnd() {
            return false;
        }

        @Override
        public Object nextRecord(Object reuse) {
            return null;
        }

        @Override
        public GenericInputSplit[] createInputSplits(int numSplits) throws IOException {
            return new GenericInputSplit[] { new TestSplit(0, 1) };
        }
    }
}