se.sics.nstream.hops.HopsFED.java Source code

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Here is the source code for se.sics.nstream.hops.HopsFED.java

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/*
 * Copyright (C) 2009 Swedish Institute of Computer Science (SICS) Copyright (C)
 * 2009 Royal Institute of Technology (KTH)
 *
 * GVoD is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package se.sics.nstream.hops;

import com.google.common.base.Optional;
import java.util.ArrayList;
import java.util.List;
import org.javatuples.Pair;
import se.sics.nstream.StreamId;
import se.sics.nstream.storage.durable.util.FileExtendedDetails;
import se.sics.nstream.storage.durable.util.MyStream;

/**
 * @author Alex Ormenisan <aaor@kth.se>
 */
public class HopsFED implements FileExtendedDetails {
    public final Pair<StreamId, MyStream> hdfsStream;
    public final Optional<Pair<StreamId, MyStream>> kafkaStream;

    public HopsFED(Pair<StreamId, MyStream> hdfsStream, Optional<Pair<StreamId, MyStream>> kafkaStream) {
        this.hdfsStream = hdfsStream;
        this.kafkaStream = kafkaStream;
    }

    public HopsFED(Pair<StreamId, MyStream> hdfsStream) {
        this(hdfsStream, (Optional) Optional.absent());
    }

    @Override
    public Pair<StreamId, MyStream> getMainStream() {
        return hdfsStream;
    }

    @Override
    public List<Pair<StreamId, MyStream>> getSecondaryStreams() {
        List<Pair<StreamId, MyStream>> sr = new ArrayList<>();
        if (kafkaStream.isPresent()) {
            sr.add(kafkaStream.get());
        }
        return sr;
    }

}