com.smartmarmot.dbforbix.zabbix.protocol.Sender18.java Source code

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Here is the source code for com.smartmarmot.dbforbix.zabbix.protocol.Sender18.java

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/*
 * This file is part of DBforBix.
 *
 * DBforBix 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 3 of the License, or (at your option) any later
 * version.
 * 
 * DBforBix 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
 * DBforBix. If not, see <http://www.gnu.org/licenses/>.
 */

package com.smartmarmot.dbforbix.zabbix.protocol;

import java.io.UnsupportedEncodingException;

import org.apache.commons.codec.binary.Base64;

import com.smartmarmot.dbforbix.zabbix.ZabbixItem;

/**
 * Zabbix 1.8 sender protocol, JSON based
 * 
 * @author Andrea Dalle Vacche
 */
public class Sender18 implements ISenderProtocol {
    private static final String data = "</key><data>";

    private static final String time = "</data><timestamp>";

    private static final String tail = "</timestamp></req>";

    @Override
    public boolean isMultiValueSupported() {
        return true;
    }

    /**
    * Encodes data for transmission to the server.
    * 
    * This method encodes the data in the ASCII encoding, defaulting to
    * the platform default encoding if that is somehow unavailable.
    *    
    * @param data
    * @return byte[] containing the encoded data
    */
    private byte[] encodeString(String data) {
        try {
            return data.getBytes("ASCII");
        } catch (UnsupportedEncodingException e) {
            return data.getBytes();
        }
    }

    private String base64Encode(String data) {
        return new String(Base64.encodeBase64(encodeString(data)));
    }

    private String buildJSonString(String host, String item, String value, String clock) {
        String head = "<req><host>" + base64Encode(host) + "</host><key>";
        final StringBuilder message = new StringBuilder(head);

        message.append(base64Encode(item));
        message.append(data);

        message.append(base64Encode(value == null ? "" : value));
        message.append(time);
        message.append(base64Encode(clock));
        message.append(tail);

        return message.toString();
    }

    @Override
    public String encodeItem(ZabbixItem item) {
        String payload = buildJSonString(item.getHost(), item.getKey(), item.getValue(),
                Long.toString(item.getClock()));
        return payload;
    }

    @Override
    public String encodeItems(ZabbixItem[] item) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public boolean isResponeOK(int readed, byte[] response) {
        if (readed != 2 || response[0] != 'O' || response[1] != 'K')
            return false;
        return true;
    }

}