gobblin.azkaban.AzkabanCompactionJobLauncher Maven / Gradle / Ivy

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Gobblin Ingestion Framework
There is a newer version: 0.8.0
/*
 * 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.azkaban;

import java.io.IOException;
import java.util.Properties;

import azkaban.jobExecutor.AbstractJob;

import com.google.common.base.Optional;

import org.apache.log4j.Logger;

import gobblin.compaction.Compactor;
import gobblin.compaction.CompactorFactory;
import gobblin.compaction.CompactorCreationException;
import gobblin.compaction.listeners.CompactorListener;
import gobblin.compaction.listeners.CompactorListenerCreationException;
import gobblin.compaction.listeners.CompactorListenerFactory;
import gobblin.compaction.ReflectionCompactorFactory;
import gobblin.compaction.listeners.ReflectionCompactorListenerFactory;
import gobblin.metrics.Tag;


/**
 * A class for launching a Gobblin MR job for compaction through Azkaban.
 *
 * @author ziliu
 */
public class AzkabanCompactionJobLauncher extends AbstractJob {

  private static final Logger LOG = Logger.getLogger(AzkabanCompactionJobLauncher.class);

  private final Properties properties;
  private final Compactor compactor;

  public AzkabanCompactionJobLauncher(String jobId, Properties props) {
    super(jobId, LOG);
    this.properties = new Properties();
    this.properties.putAll(props);
    this.compactor = getCompactor(getCompactorFactory(), getCompactorListener(getCompactorListenerFactory()));
  }

  private Compactor getCompactor(CompactorFactory compactorFactory, Optional compactorListener) {
    try {
      return compactorFactory
          .createCompactor(this.properties, Tag.fromMap(AzkabanTags.getAzkabanTags()), compactorListener);
    } catch (CompactorCreationException e) {
      throw new RuntimeException("Unable to create compactor", e);
    }
  }

  protected CompactorFactory getCompactorFactory() {
    return new ReflectionCompactorFactory();
  }

  private Optional getCompactorListener(CompactorListenerFactory compactorListenerFactory) {
    try {
      return compactorListenerFactory.createCompactorListener(this.properties);
    } catch (CompactorListenerCreationException e) {
      throw new RuntimeException("Unable to create compactor listener", e);
    }
  }

  protected CompactorListenerFactory getCompactorListenerFactory() {
    return new ReflectionCompactorListenerFactory();
  }

  @Override
  public void run() throws Exception {
    this.compactor.compact();
  }

  @Override
  public void cancel() throws IOException {
    this.compactor.cancel();
  }
}