/*
 * 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.gobblin.compaction.listeners;

import java.util.Set;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import org.apache.gobblin.annotation.Alias;
import org.apache.gobblin.compaction.dataset.Dataset;
import org.apache.gobblin.compaction.mapreduce.MRCompactor;
import org.apache.gobblin.configuration.State;


public class SimpleCompactorCompletionListener implements CompactorCompletionListener {
  private static final Logger logger = LoggerFactory.getLogger (SimpleCompactorCompletionListener.class);

  private SimpleCompactorCompletionListener (State state) {
  }

  public void onCompactionCompletion (MRCompactor compactor) {
    logger.info(String.format("Compaction (started on : %s) is finished", compactor.getInitializeTime()));
    Set<Dataset> datasets = compactor.getDatasets();

    for (Dataset dataset: datasets) {
      if (dataset.state() != Dataset.DatasetState.COMPACTION_COMPLETE) {
        logger.error("Dataset " + dataset.getDatasetName() + " " + dataset.state().name());
      }
    }
  }

  @Alias("SimpleCompactorCompletionHook")
  public static class Factory implements CompactorCompletionListenerFactory {
    @Override public CompactorCompletionListener createCompactorCompactionListener (State state) {
      return new SimpleCompactorCompletionListener (state);
    }
  }
}
