/**
* Copyright (c) 2011-2014, OpenIoT
*
* This file is part of OpenIoT.
*
* OpenIoT is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* OpenIoT 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with OpenIoT. If not, see <http://www.gnu.org/licenses/>.
*
* Contact: OpenIoT mailto: info@openiot.eu
* @author Mehdi Riahi
* @author bgpearn
*/
package org.openiot.gsn.wrappers.xBow;
import org.openiot.gsn.beans.AddressBean;
import org.openiot.gsn.beans.ContainerConfig;
import org.openiot.gsn.beans.DataField;
import org.openiot.gsn.beans.DataTypes;
import org.openiot.gsn.beans.StreamElement;
import org.openiot.gsn.wrappers.AbstractWrapper;
import org.apache.log4j.Logger;
import java.util.ArrayList;
import java.lang.Thread;
import java.io.*;
import java.net.Socket;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.*;
import javax.xml.parsers.ParserConfigurationException;
/**
* This is a modified version of Lei Shu's xmlWrapper.
* It works with a MicaZ WSN - WSN-PRO2400CA - MICAZ PROFESSIONAL KIT
* The sensor boards contain:
* a Sensirion SHT11 single chip humidity and temperature sensor;
* an Intersema MS55ER barometric pressure and temperature sensor;
* a TAOS Inc. TLS2550 digital light sensor and
* an Analog Devices ADXL202 dual axis accelerometer.
* @author bgpearn
*/
//TODO: This wrapper does not reconnect to a remote xServe if communication is lost.
public class xBowWrapper extends AbstractWrapper {
private int DEFAULT_RATE = 5000;
private static int threadCounter = 0;
private final transient Logger logger = Logger.getLogger ( xBowWrapper.class );
private static final String [ ] FIELD_NAMES = new String [ ] {
"amType", "nodeid" , "voltage" ,
"humid" , "humtemp" , "prtemp" ,"press",
"taosch0", "taosch1", "taoch0"};
private static final Byte [ ] FIELD_TYPES = new Byte [ ] {
DataTypes.INTEGER ,DataTypes.INTEGER , DataTypes.INTEGER ,
DataTypes.INTEGER ,DataTypes.INTEGER , DataTypes.DOUBLE , DataTypes.DOUBLE,
DataTypes.INTEGER, DataTypes.INTEGER,DataTypes.DOUBLE};
private static final String [ ] FIELD_DESCRIPTION = new String [ ] {
"amType" ,"Node ID" , "Voltage of This Node" ,
"Humidity" , "Temperature" , "PrTemp", "Pressure",
"taosch0", "taosch1", "taoch0"};
private static final String [ ] FIELD_TYPES_STRING = new String [ ] {
"int" , "int" , "int" ,
"int" , "int" , "double", "double",
"int" , "int" , "double"};
private DataField[] outputStructure;
private String host;
private int port;
private int rate;
private String inputRate ;
private int times ;
private String inputTimes ;
// fields of sensor node
private int amType ;
private int nodeid ;
private int parent ;
private int group ;
private int voltage ;
private int humid ;
private int humtemp ;
private int taosch0;
private int taosch1;
private double taoch0;
private double prtemp ;
private double press ;
private double accel_x ;
private double accel_y ;
// declare the socket object for client side
private Socket xmlSocket = null ;
private BufferedReader rd ;
private StreamElement streamEle ;
private boolean add = false ;
private String s = "" ; // xml packet
private String xmls ;
private DocumentBuilderFactory domfac ;
private DocumentBuilder dombuilder ;
private InputSource ins ;
private Document doc ;
private int k ;
private String bs ;
private int indexS ;
private int indexE ;
private boolean getxml ;
public boolean initialize ( ) {
/**
* check the host and port parameters.
*/
AddressBean addressBean = getActiveAddressBean( );
setName( "xbowWrapper" + ( threadCounter++ ) );
host = addressBean.getPredicateValue ( "host" );
if ( host == null || host.trim ( ).length ( ) == 0 ) {
logger.warn ( "The >host< parameter is missing from the RemoteWrapper wrapper." );
return false;
}
port = addressBean.getPredicateValueAsInt("port" ,ContainerConfig.DEFAULT_GSN_PORT);
if ( port > 65000 || port <= 0 ) {
logger.error("Remote wrapper initialization failed, bad port number:"+port);
return false;
}
inputRate = addressBean.getPredicateValue( "rate" );
if ( inputRate == null || inputRate.trim( ).length( ) == 0 ) rate = DEFAULT_RATE;
else
rate = Integer.parseInt( inputRate );
ArrayList<DataField > 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 ( ) {
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;
try {
Thread.sleep(rate);
} catch (InterruptedException e) {
logger.error(e.getMessage(),e);
}
try { // try
s = "";
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];
}
s = s.trim();
if (s != ""){
try{
indexS = s.indexOf("<?xml");
indexE = s.indexOf("</MotePacket>");
}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;
}
if (bs.length() < 2000) {
try{
indexS = s.indexOf("<?xml", indexE);
indexE = s.indexOf("</MotePacket>", indexS);
} 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
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();
// Initialize this input source as xmls
ins.setCharacterStream(new StringReader(xmls));
// 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<fields.getLength();i++){
Element field = (Element)fields.item(i);
String name;
Element nameEle=(Element)field.getElementsByTagName("Name").item(0);
name = nameEle.getTextContent();
String value;
Element valueEle=(Element)field.getElementsByTagName("ConvertedValue").item(0);
value = valueEle.getTextContent();
if (name.equals("amtype")){
amType = Integer.parseInt(value);
}
if (name.equals("nodeid")){
nodeid = Integer.parseInt(value);
}
if (name.equals("parent")){
parent = Integer.parseInt(value);
}
if (name.equals("group")){
group = Integer.parseInt(value);
}
if (name.equals("voltage")){
voltage = Integer.parseInt(value);
}
if (name.equals("humid")){
humid = Integer.parseInt(value);
}
if (name.equals("humtemp")){
humtemp = Integer.parseInt(value);
}
if (name.equals("taosch0")){
taosch0 = Integer.parseInt(value);
}
if (name.equals("taosch1")){
taosch1 = Integer.parseInt(value);
}
if (name.equals("taoch0")){
if (Double.isNaN(taoch0 = Double.parseDouble(value))){
taoch0 = 0 ;
}
}
if (name.equals("prtemp")){
prtemp = Double.parseDouble(value);
}
if (name.equals("press")){
press = Double.parseDouble(value);
}
if (name.equals("accel_x")){
accel_x = Double.parseDouble(value);
}
if (name.equals("accel_y")){
accel_y = Double.parseDouble(value);
}
} // end of second layer for 3
if (amType == 11) {
try { // try 1
streamEle = new StreamElement( FIELD_NAMES , FIELD_TYPES ,
new Serializable [ ] {
amType, nodeid , voltage ,
humid , humtemp , prtemp,
press, taosch0, taosch1, taoch0 } );
postStreamElement (streamEle);
}catch (Exception e){ // try 1
logger.info(e.getMessage( ) , e );
}
}
}; // end of if
}catch (Exception e) { // try 4
logger.error( e.getMessage( ) , e );
}
} catch (Exception e) { // try
logger.error( e.getMessage( ) , e );
}
} // while
} // run
// for GSNv2
public void dispose ( ) {
threadCounter--;
}
// for release 1249 and later
public void finalize ( ) {
threadCounter--;
}
public String getWrapperName() {
return "xBowWrapper";
}
public DataField[] getOutputFormat ( ) {
return outputStructure;
}
}