gobblin.yarn.JobConfigurationManagerTest.java Source code

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Here is the source code for gobblin.yarn.JobConfigurationManagerTest.java

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/*
 * Copyright (C) 2014-2016 LinkedIn Corp. All rights reserved.
 *
 * 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.
 */

package gobblin.yarn;

import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.Properties;
import java.util.Set;
import java.util.concurrent.CountDownLatch;

import org.apache.commons.io.FileUtils;
import org.testng.Assert;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;

import com.google.common.base.Optional;
import com.google.common.collect.Lists;
import com.google.common.collect.Sets;
import com.google.common.eventbus.EventBus;
import com.google.common.eventbus.Subscribe;
import com.google.common.io.Closer;
import com.google.common.io.Files;

import gobblin.configuration.ConfigurationKeys;
import gobblin.yarn.event.NewJobConfigArrivalEvent;

/**
 * Unit tests for {@link JobConfigurationManager}.
 *
 * @author Yinan Li
 */
@Test(groups = { "gobblin.yarn" })
public class JobConfigurationManagerTest {

    private static final int NUM_JOB_CONFIG_FILES = 3;

    private static final String JOB_CONFIG_DIR_NAME = JobConfigurationManagerTest.class.getSimpleName();

    private final File jobConfigFileDir = new File(
            JOB_CONFIG_DIR_NAME + GobblinYarnConfigurationKeys.TAR_GZ_FILE_SUFFIX);
    private final EventBus eventBus = new EventBus();
    private JobConfigurationManager jobConfigurationManager;

    private final List<Properties> receivedJobConfigs = Lists.newArrayList();
    private final CountDownLatch countDownLatch = new CountDownLatch(NUM_JOB_CONFIG_FILES);

    @BeforeClass
    public void setUp() throws IOException {
        this.eventBus.register(this);

        // Prepare the test job configuration files
        Assert.assertTrue(jobConfigFileDir.mkdirs());
        Closer closer = Closer.create();
        try {
            for (int i = 0; i < NUM_JOB_CONFIG_FILES; i++) {
                File jobConfigFile = new File(this.jobConfigFileDir, "test" + i + ".job");
                Assert.assertTrue(jobConfigFile.createNewFile());
                Properties properties = new Properties();
                properties.setProperty("foo", "bar" + i);
                properties.store(
                        closer.register(Files.newWriter(jobConfigFile, ConfigurationKeys.DEFAULT_CHARSET_ENCODING)),
                        "");
            }
        } catch (Throwable t) {
            throw closer.rethrow(t);
        } finally {
            closer.close();
        }

        this.jobConfigurationManager = new JobConfigurationManager(this.eventBus, Optional.of(JOB_CONFIG_DIR_NAME));
        this.jobConfigurationManager.startAsync().awaitRunning();
    }

    @Test
    public void verifyJobConfigs() throws InterruptedException {
        // Wait for all job configs to be received
        this.countDownLatch.await();

        Set<String> actual = Sets.newHashSet();
        Set<String> expected = Sets.newHashSet();

        Assert.assertEquals(this.receivedJobConfigs.size(), 3);
        for (int i = 0; i < NUM_JOB_CONFIG_FILES; i++) {
            actual.add(this.receivedJobConfigs.get(i).getProperty("foo"));
            expected.add("bar" + i);
        }

        Assert.assertEquals(actual, expected);
    }

    @AfterClass
    public void tearDown() throws IOException {
        this.jobConfigurationManager.stopAsync().awaitTerminated();
        if (this.jobConfigFileDir.exists()) {
            FileUtils.deleteDirectory(this.jobConfigFileDir);
        }
    }

    @Test(enabled = false)
    @Subscribe
    public void handleNewJobConfigArrival(NewJobConfigArrivalEvent newJobConfigArrivalEvent) {
        this.receivedJobConfigs.add(newJobConfigArrivalEvent.getJobConfig());
        this.countDownLatch.countDown();
    }
}