eu.stratosphere.pact.runtime.task.TempTaskTest.java Source code

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Here is the source code for eu.stratosphere.pact.runtime.task.TempTaskTest.java

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/***********************************************************************************************************************
 *
 * Copyright (C) 2010 by the Stratosphere project (http://stratosphere.eu)
 *
 * Licensed 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 eu.stratosphere.pact.runtime.task;

import java.util.ArrayList;
import java.util.List;

import junit.framework.Assert;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.junit.Test;

import eu.stratosphere.nephele.configuration.Configuration;
import eu.stratosphere.pact.common.stubs.Stub;
import eu.stratosphere.pact.common.type.PactRecord;
import eu.stratosphere.pact.runtime.test.util.DelayingInfinitiveInputIterator;
import eu.stratosphere.pact.runtime.test.util.NirvanaOutputList;
import eu.stratosphere.pact.runtime.test.util.UniformPactRecordGenerator;
import eu.stratosphere.pact.runtime.test.util.TaskCancelThread;
import eu.stratosphere.pact.runtime.test.util.TaskTestBase;

public class TempTaskTest extends TaskTestBase {
    private static final Log LOG = LogFactory.getLog(TempTaskTest.class);

    private final List<PactRecord> outList = new ArrayList<PactRecord>();

    @Test
    public void testTempTask() {
        int keyCnt = 1024;
        int valCnt = 4;

        super.initEnvironment(1024 * 1024 * 1);
        super.addInput(new UniformPactRecordGenerator(keyCnt, valCnt, false), 1);
        super.addOutput(this.outList);

        TempTask<PactRecord> testTask = new TempTask<PactRecord>();
        super.getTaskConfig().setMemorySize(1 * 1024 * 1024);

        super.registerTask(testTask, PrevStub.class);

        try {
            testTask.invoke();
        } catch (Exception e) {
            LOG.debug(e);
            Assert.fail("Invoke method caused exception.");
        }

        Assert.assertTrue(this.outList.size() == keyCnt * valCnt);

    }

    @Test
    public void testCancelTempTask() {

        super.initEnvironment(1024 * 1024 * 1);
        super.addInput(new DelayingInfinitiveInputIterator(100), 1);
        super.addOutput(new NirvanaOutputList());

        final TempTask<PactRecord> testTask = new TempTask<PactRecord>();
        super.getTaskConfig().setMemorySize(1 * 1024 * 1024);

        super.registerTask(testTask, PrevStub.class);

        Thread taskRunner = new Thread() {
            @Override
            public void run() {
                try {
                    testTask.invoke();
                } catch (Exception ie) {
                    ie.printStackTrace();
                    Assert.fail("Task threw exception although it was properly canceled");
                }
            }
        };
        taskRunner.start();

        TaskCancelThread tct = new TaskCancelThread(1, taskRunner, testTask);
        tct.start();

        try {
            tct.join();
            taskRunner.join();
        } catch (InterruptedException ie) {
            Assert.fail("Joining threads failed");
        }

    }

    public static class PrevStub implements Stub {
        @Override
        public void open(Configuration parameters) throws Exception {
        }

        @Override
        public void close() throws Exception {
        }
    }
}