in.dream_lab.goffish.ControlMessage.java Source code

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Here is the source code for in.dream_lab.goffish.ControlMessage.java

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/**
    
    
 * 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 in.dream_lab.goffish;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.List;

import org.apache.hadoop.io.ArrayWritable;
import org.apache.hadoop.io.ByteWritable;
import org.apache.hadoop.io.BytesWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.io.WritableUtils;

import com.google.common.collect.Lists;
import com.google.common.primitives.Ints;
import com.google.common.primitives.Longs;

import in.dream_lab.goffish.humus.api.IControlMessage;

class ControlMessage implements IControlMessage {

    private IControlMessage.TransmissionType transmissionType;
    private Text vertexValues = new Text("");
    private List<BytesWritable> extraInfo;
    private int partitionID;

    public ControlMessage() {
        transmissionType = IControlMessage.TransmissionType.NORMAL;
        extraInfo = Lists.newArrayList();
    }

    @Override
    public void write(DataOutput out) throws IOException {
        WritableUtils.writeEnum(out, transmissionType);
        out.writeInt(extraInfo.size());
        for (BytesWritable info : extraInfo) {
            info.write(out);
        }

        if (isPartitionMessage()) {
            out.writeInt(partitionID);
        } else if (isVertexMessage()) {
            vertexValues.write(out);
        }
    }

    @Override
    public void readFields(DataInput in) throws IOException {
        transmissionType = WritableUtils.readEnum(in, IControlMessage.TransmissionType.class);
        extraInfo = Lists.newArrayList();
        int extraInfoSize;
        extraInfoSize = in.readInt();
        while (extraInfoSize-- > 0) {
            BytesWritable info = new BytesWritable();
            info.readFields(in);
            extraInfo.add(info);
        }
        if (isPartitionMessage()) {
            partitionID = in.readInt();
        } else if (isVertexMessage()) {
            vertexValues.readFields(in);
        }
    }

    @Override
    public TransmissionType getTransmissionType() {
        return transmissionType;
    }

    public void setTransmissionType(IControlMessage.TransmissionType transmissionType) {
        this.transmissionType = transmissionType;
    }

    public void setPartitionID(int partitionID) {
        this.setPartitionID(partitionID);
    }

    //remove this and just use extrainfo
    public void setVertexValues(String vertex) {
        this.vertexValues = new Text(vertex);
    }

    public String getVertexValues() {
        return vertexValues.toString();
    }

    public void addextraInfo(byte b[]) {
        BytesWritable info = new BytesWritable(b);
        this.extraInfo.add(info);
    }

    public Iterable<BytesWritable> getExtraInfo() {
        return extraInfo;
    }

    public boolean isNormalMessage() {
        return transmissionType == IControlMessage.TransmissionType.NORMAL;
    }

    public boolean isPartitionMessage() {
        return transmissionType == IControlMessage.TransmissionType.PARTITION;
    }

    public boolean isVertexMessage() {
        return transmissionType == IControlMessage.TransmissionType.VERTEX;
    }

    public boolean isBroadcastMessage() {
        return transmissionType == IControlMessage.TransmissionType.BROADCAST;
    }

    //to be removed after clearing dependencies from LongTextjsonReader
    @Override
    public String toString() {
        if (isPartitionMessage()) {
            return String.valueOf(partitionID);
        } else if (isVertexMessage()) {
            return vertexValues.toString();
        } else {
            return null;
        }
    }

}