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/*
 * 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 com.facebook.presto.spark;

import com.facebook.presto.spark.classloader_interface.MutablePartitionId;
import com.facebook.presto.spark.classloader_interface.PrestoSparkTaskOutput;
import com.google.common.collect.ImmutableList;
import org.apache.spark.SparkException;
import org.apache.spark.api.java.JavaPairRDD;
import scala.Tuple2;

import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

import static com.facebook.presto.spark.util.PrestoSparkUtils.getActionResultWithTimeout;
import static com.google.common.base.Preconditions.checkState;
import static java.util.Objects.requireNonNull;

public class RddAndMore
{
    private final JavaPairRDD rdd;
    private final List> broadcastDependencies;

    private boolean collected;

    public RddAndMore(
            JavaPairRDD rdd,
            List> broadcastDependencies)
    {
        this.rdd = requireNonNull(rdd, "rdd is null");
        this.broadcastDependencies = ImmutableList.copyOf(requireNonNull(broadcastDependencies, "broadcastDependencies is null"));
    }

    public List> collectAndDestroyDependenciesWithTimeout(long timeout, TimeUnit timeUnit, Set waitTimeMetrics)
            throws SparkException, TimeoutException
    {
        checkState(!collected, "already collected");
        collected = true;
        List> result = getActionResultWithTimeout(rdd.collectAsync(), timeout, timeUnit, waitTimeMetrics);
        broadcastDependencies.forEach(PrestoSparkBroadcastDependency::destroy);
        return result;
    }

    public JavaPairRDD getRdd()
    {
        return rdd;
    }

    public List> getBroadcastDependencies()
    {
        return broadcastDependencies;
    }
}