edu.umass.cs.gigapaxos.paxospackets.ProposalPacket.java Source code

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Here is the source code for edu.umass.cs.gigapaxos.paxospackets.ProposalPacket.java

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/* Copyright (c) 2015 University of Massachusetts
 * 
 * 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.
 * 
 * Initial developer(s): V. Arun */
package edu.umass.cs.gigapaxos.paxospackets;

import java.io.UnsupportedEncodingException;
import java.net.UnknownHostException;
import java.nio.ByteBuffer;

import org.json.JSONException;
import org.json.JSONObject;

import edu.umass.cs.utils.DelayProfiler;
import edu.umass.cs.utils.Util;

/**
 * @author arun
 *
 */
@SuppressWarnings("javadoc")
public class ProposalPacket extends RequestPacket {
    /**
     * Slot number assigned to the request. A proposal is a (slot, request)
     * two-tuple.
     */
    public final int slot;

    public ProposalPacket(int slot, RequestPacket req) {
        super(req);
        this.slot = slot;
        this.packetType = PaxosPacketType.PROPOSAL;
    }

    protected ProposalPacket(ProposalPacket prop) {
        super(prop);
        this.slot = prop.slot;
        this.packetType = PaxosPacketType.PROPOSAL;
    }

    public ProposalPacket(JSONObject json) throws JSONException {
        super(json);
        this.packetType = PaxosPacketType.PROPOSAL;
        this.slot = json.getInt(PaxosPacket.Keys.S.toString());
    }

    public ProposalPacket(net.minidev.json.JSONObject json) throws JSONException {
        super(json);
        this.packetType = PaxosPacketType.PROPOSAL;
        this.slot = (Integer) json.get(PaxosPacket.Keys.S.toString());
    }

    @Override
    public JSONObject toJSONObjectImpl() throws JSONException {
        JSONObject json = super.toJSONObjectImpl();
        json.put(PaxosPacket.Keys.S.toString(), slot);
        return json;
    }

    @Override
    public net.minidev.json.JSONObject toJSONSmartImpl() throws JSONException {
        net.minidev.json.JSONObject json = super.toJSONSmartImpl();
        json.put(PaxosPacket.Keys.S.toString(), slot);
        return json;
    }

    protected ProposalPacket(ByteBuffer bbuf) throws UnsupportedEncodingException, UnknownHostException {
        super(bbuf);
        this.slot = bbuf.getInt();
    }

    protected static final int SIZEOF_PROPOSAL = 4;

    // only RequestPacket should be byteable
    @Override
    public byte[] toBytes() {
        try {
            byte[] bytes = this.toString().getBytes(CHARSET);
            return bytes;
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return null;
    }

    @Override
    protected String getSummaryString() {
        return slot + ", " + super.getSummaryString();
    }
}