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/**
* Global Sensor Networks (GSN) Source Code
* Copyright (c) 2006-2016, Ecole Polytechnique Federale de Lausanne (EPFL)
*
* This file is part of GSN.
*
* GSN 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.
*
* GSN 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 GSN. If not, see amtype 11 nodeid 1156 parent 0 group 125 socketid 51 board_id 133 packet_id 134 voltage 3003 humid 45 humtemp 26 calibW0 46520 calibW1 50839 calibW2 43118 calibW3 46252 prtemp 25.852833 press 992.968689 taosch0 65518 taosch1 0 accel_x 1440.000000 accel_y 500.000000 taoch0 883.890015 calibB0 184 calibB1 181 calibB2 151 calibB3 198 calibB4 110 calibB5 168 calibB6 172 calibB7 180 output = new ArrayList < DataField >();
for ( int i = 0 ; i < FIELD_NAMES.length ; i++ )
output.add( new DataField( FIELD_NAMES[ i ] , FIELD_TYPES_STRING[ i ] , FIELD_DESCRIPTION[ i ] ) );
outputStructure = output.toArray( new DataField[] {} );
return true;
}
public void run ( ) {
// int n=0;
try {
// setup the socket connection
xmlSocket = new Socket(host, port);
rd = new BufferedReader(new InputStreamReader(xmlSocket.getInputStream()));
} catch (IOException e){
logger.warn(" The xml socket connection is not set up.");
logger.warn(" Cannot read from xmlSocket. ");
}
while ( isActive( ) ) {
getxml = false;
// if (xmlSocket.isConnected()){
// logger.info("Socket is connected");
// }
// testing
// n = n + 1 ;
// logger.info("while times n:"+n);
try {
Thread.sleep(rate);
} catch (InterruptedException e) {
logger.error(e.getMessage(),e);
}
try { // try
s = "";
// *** IMPORTANT Factors for getting data ***
// 1) when reading data from buffer, it is already good to read more data.
// For example, the actual length of an XML packet is around 2843, but set the buffer as 3200.
// If two sensor node 2843 * 2, but set the buffer as 6000.
// 2) the sampling rate is another important factor.
// Setting different sampling rate, getting different results.
// ***
char[] c = new char[3000];
// initialize this char[]
for (int j = 0; j < c.length; j++){
c[j] = 0;
}
rd.read(c);
for (int j = 0; j < c.length; j++){
s = s + c[j];
}
//logger.info("S before processing: "+s);
s = s.trim();
//logger.info("S after trim processing: "+s);
//logger.info("s.length: "+ s.length());
if (s != ""){
try{
indexS = s.indexOf("");
//logger.info("original indexS: "+indexS);
//logger.info("original indexE: "+indexE);
}catch (Exception e){
logger.error( e.getMessage( ) , e );
}
if (indexS < indexE) {
if (indexS >= 0){
//logger.info("indexS: "+indexS);
//logger.info("indexE: "+indexE);
bs = s.substring(indexS,(indexE+13) );
//logger.info("bs.length: "+ bs.length());
if (bs.length() > 2000) {
xmls = bs;
getxml = true;
}
if (bs.length() < 2000) {
try{
indexS = s.indexOf("", indexS);
//logger.info("new indexS: "+indexS);
//logger.info("new indexE: "+indexE);
} catch (Exception e){
logger.error( e.getMessage( ) , e );
}
if (indexS < indexE) {
if (indexS >= 0){
bs = s.substring(indexS,(indexE+13) );
if (bs.length() > 2000) {
xmls = bs;
getxml = true;
}
}
}
}
}
}
}
try { // try 4
//logger.info("S after processing: "+ xmls);
//logger.info("getxml : "+ getxml);
if (getxml){ // if 1
// Create instance of DocumentBuilderFactory
domfac = DocumentBuilderFactory.newInstance();
try { // try 3
// Get the DocumentBuilder
dombuilder = domfac.newDocumentBuilder();
} catch (ParserConfigurationException e){ // try 3
logger.info(e.getMessage( ) , e );
}
try { // try 2
// Create instance of input source
ins = new InputSource();
//logger.info("xmls.length(): "+ xmls.length());
// Initialize this input source as xmls
ins.setCharacterStream(new StringReader(xmls));
//logger.info(ins);
// Pass xmls stream to XML Parser
doc = dombuilder.parse(ins);
} catch (SAXException e){ // try 2
logger.info(e.getMessage( ) , e );
} catch (NullPointerException e){
logger.info(e.getMessage( ) , e );
}
// Get the root element of XML packet
Element root = doc.getDocumentElement();
// Get the first level Node list
NodeList fields = root.getChildNodes();
// Get all fields' name
// start of second layer for 3
for(int i=0;i