/*
 * 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.phoenix.hbase.index.write;

import java.util.concurrent.ExecutionException;
import org.apache.phoenix.hbase.index.exception.SingleIndexWriteFailureException;
import org.apache.phoenix.hbase.index.parallel.EarlyExitFailure;
import org.apache.phoenix.hbase.index.parallel.TaskBatch;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Write index updates to the index tables in parallel. We attempt to early exit from the writes if
 * any of the index updates fails. Completion is determined by the following criteria: *
 * <ol>
 * <li>All index writes have returned, OR</li>
 * <li>Any single index write has failed</li>
 * </ol>
 * We attempt to quickly determine if any write has failed and not write to the remaining indexes to
 * ensure a timely recovery of the failed index writes.
 */
public class ParallelWriterIndexCommitter extends AbstractParallelWriterIndexCommitter {
  private static final Logger LOGGER = LoggerFactory.getLogger(ParallelWriterIndexCommitter.class);

  public ParallelWriterIndexCommitter() {
  }

  // For testing
  public ParallelWriterIndexCommitter(String hbaseVersion) {
    super(hbaseVersion);
  }

  @Override
  protected void submitTasks(TaskBatch<Void> tasks) throws SingleIndexWriteFailureException {
    try {
      pool.submitUninterruptible(tasks);
    } catch (EarlyExitFailure e) {
      propagateFailure(e);
    } catch (ExecutionException e) {
      LOGGER.error("Found a failed index update!");
      propagateFailure(e.getCause());
    }
  }
}
