org.kegbot.kegboard.KegboardHelloMessage.java Source code

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Here is the source code for org.kegbot.kegboard.KegboardHelloMessage.java

Source

/*
 * Copyright 2014 Bevbot LLC <info@bevbot.com>
 *
 * This file is part of the Kegtab package from the Kegbot project. For
 * more information on Kegtab or Kegbot, see <http://kegbot.org/>.
 *
 * Kegtab 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, version 2.
 *
 * Kegtab 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 Kegtab. If not, see <http://www.gnu.org/licenses/>.
 */
package org.kegbot.kegboard;

import com.google.common.base.Strings;

/**
 * @author mike
 */
public class KegboardHelloMessage extends KegboardMessage {

    public static final int MESSAGE_TYPE = 0x01;

    private static final int TAG_FIRMWARE_VERSION = 0x01;
    private static final int TAG_PROTOCOL_VERSION = 0x02;
    private static final int TAG_SERIAL_NUMBER = 0x03;
    private static final int TAG_UPTIME_MILLIS = 0x04;
    private static final int TAG_UPTIME_DAYS = 0x05;

    public KegboardHelloMessage(byte[] wholeMessage) throws KegboardMessageException {
        super(wholeMessage);
    }

    @Override
    public short getMessageType() {
        return MESSAGE_TYPE;
    }

    @Override
    public String getStringExtra() {
        return new StringBuilder().append("firmware_version=").append(getFirmwareVersion())
                .append(" protocol_version=").append(getProtocolVersion()).append(" serial_number=")
                .append(getSerialNumber()).append(" uptime_days=").append(getUptimeDays()).append(" uptime_millis=")
                .append(getUptimeMillis()).toString();
    }

    public int getFirmwareVersion() {
        return readTagAsShort(TAG_FIRMWARE_VERSION);
    }

    public int getProtocolVersion() {
        return readTagAsShort(TAG_PROTOCOL_VERSION);
    }

    public long getUptimeDays() {
        final Long value = readTagAsLong(TAG_UPTIME_DAYS);
        if (value != null) {
            return value.longValue();
        }
        return -1;
    }

    public long getUptimeMillis() {
        final Long value = readTagAsLong(TAG_UPTIME_MILLIS);
        if (value != null) {
            return value.longValue();
        }
        return -1;
    }

    public String getSerialNumber() {
        return Strings.nullToEmpty(readTagAsString(TAG_SERIAL_NUMBER));
    }

}