iotjava/iotruntime/master/IoTMaster.java

   1 package iotruntime.master;
   2
   3 import iotruntime.*;
   4 import iotruntime.slave.IoTAddress;
   5 import iotruntime.slave.IoTDeviceAddress;
   6 import iotruntime.messages.*;
   7
   8 // ASM packages
   9 import org.objectweb.asm.ClassReader;
  10 import org.objectweb.asm.ClassWriter;
  11 import org.objectweb.asm.ClassVisitor;
  12
  13 // Java packages
  14 import java.io.*;
  15 import java.util.*;
  16 import java.io.BufferedReader;
  17 import java.io.InputStream;
  18 import java.io.InputStreamReader;
  19 import java.io.File;
  20 import java.io.FileInputStream;
  21 import java.io.FileOutputStream;
  22 import java.io.ObjectInputStream;
  23 import java.io.ObjectOutputStream;
  24 import java.io.IOException;
  25 import java.lang.ClassNotFoundException;
  26 import java.lang.Class;
  27 import java.lang.reflect.*;
  28 import java.net.Socket;
  29 import java.net.ServerSocket;
  30 import java.util.*;
  31 import static java.lang.Math.toIntExact;
  32
  33 /** Class IoTMaster is responsible to use ClassRuntimeInstrumenterMaster
  34  *  to instrument the controller/device bytecode and starts multiple
  35  *  IoTSlave running on different JVM's in a distributed fashion.
  36  *
  37  * @author      Rahmadi Trimananda <rahmadi.trimananda @ uci.edu>
  38  * @version     1.0
  39  * @since       2016-06-16
  40  */
  41 public class IoTMaster {
  42
  43         /**
  44          * IoTMaster class properties
  45          * <p>
  46          * CommunicationHandler maintains the data structure for hostnames and ports
  47          * LoadBalancer assigns a job onto a host based on certain metrics
  48          */
  49         private CommunicationHandler commHan;
  50         private LoadBalancer lbIoT;
  51         private RouterConfig routerConfig;
  52         private ObjectInitHandler objInitHand;
  53         private ObjectAddressInitHandler objAddInitHand;
  54         private String[] strObjectNames;
  55         private Map<String,ClassRuntimeInstrumenterMaster> mapClassNameToCrim;
  56         /**
  57          * These properties hold information of a certain object
  58          * at a certain time
  59          */
  60         private String strObjName;
  61         private String strObjClassName;
  62         private String strObjClassInterfaceName;
  63         private String strObjStubClsIntfaceName;
  64         private String strIoTMasterHostAdd;
  65         private String strIoTSlaveControllerHostAdd;
  66         private String strIoTSlaveObjectHostAdd;
  67         private Class[] arrFieldClasses;
  68         private Object[] arrFieldValues;
  69         private Socket filesocket;
  70
  71         // Constants that are to be extracted from config file
  72         private static String STR_MASTER_MAC_ADD;
  73         private static String STR_IOT_CODE_PATH;
  74         private static String STR_CONT_PATH;
  75         private static String STR_RUNTIME_DIR;
  76         private static String STR_CLS_PATH;
  77         private static String STR_RMI_PATH;
  78         private static String STR_RMI_HOSTNAME;
  79         private static String STR_LOG_FILE_PATH;
  80         private static String STR_SSH_USERNAME;
  81         private static String STR_ROUTER_ADD;
  82         private static String STR_MONITORING_HOST;
  83         private static String STR_ZB_GATEWAY_ADDRESS;
  84         private static String STR_ZB_GATEWAY_PORT;
  85         private static String STR_ZB_IOTMASTER_PORT;
  86         private static String STR_NUM_CALLBACK_PORTS;
  87         private static boolean BOOL_VERBOSE;
  88
  89         /**
  90          * IoTMaster class constants
  91          * <p>
  92          * Name constants - not to be configured by users
  93          */
  94         private static final String STR_IOT_MASTER_NAME = "IoTMaster";
  95         private static final String STR_CFG_FILE_EXT = ".config";
  96         private static final String STR_CLS_FILE_EXT = ".class";
  97         private static final String STR_JAR_FILE_EXT = ".jar";
  98         private static final String STR_ZIP_FILE_EXT = ".zip";
  99         private static final String STR_TCP_PROTOCOL = "tcp";
 100         private static final String STR_UDP_PROTOCOL = "udp";
 101         private static final String STR_TCPGW_PROTOCOL = "tcpgw";
 102         private static final String STR_NO_PROTOCOL = "nopro";
 103         private static final String STR_SELF_MAC_ADD = "00:00:00:00:00:00";
 104         private static final String STR_INTERFACE_CLS_CFG = "INTERFACE_CLASS";
 105         private static final String STR_INT_STUB_CLS_CFG = "INTERFACE_STUB_CLASS";
 106         private static final String STR_FILE_TRF_CFG = "ADDITIONAL_ZIP_FILE";
 107         private static final String STR_YES = "Yes";
 108         private static final String STR_NO = "No";
 109
 110         /**
 111          * Runtime class name constants - not to be configured by users
 112          */
 113         private static final String STR_REL_INSTRUMENTER_CLS = "iotruntime.master.RelationInstrumenter";
 114         private static final String STR_SET_INSTRUMENTER_CLS = "iotruntime.master.SetInstrumenter";
 115         private static final String STR_IOT_SLAVE_CLS = "iotruntime.slave.IoTSlave";
 116         private static final String STR_IOT_DEV_ADD_CLS = "IoTDeviceAddress";
 117         private static final String STR_IOT_ZB_ADD_CLS = "IoTZigbeeAddress";
 118         private static final String STR_IOT_ADD_CLS = "IoTAddress";
 119
 120         /**
 121          * Class constructor
 122          *
 123          */
 124         public IoTMaster(String[] argObjNms) {
 125
 126                 commHan = null;
 127                 lbIoT = null;
 128                 routerConfig = null;
 129                 objInitHand = null;
 130                 objAddInitHand = null;
 131                 strObjectNames = argObjNms;
 132                 strObjName = null;
 133                 strObjClassName = null;
 134                 strObjClassInterfaceName = null;
 135                 strObjStubClsIntfaceName = null;
 136                 strIoTMasterHostAdd = null;
 137                 strIoTSlaveControllerHostAdd = null;
 138                 strIoTSlaveObjectHostAdd = null;
 139                 arrFieldClasses = null;
 140                 arrFieldValues = null;
 141                 filesocket = null;
 142                 mapClassNameToCrim = null;
 143
 144                 STR_MASTER_MAC_ADD = null;
 145                 STR_IOT_CODE_PATH = null;
 146                 STR_CONT_PATH = null;
 147                 STR_RUNTIME_DIR = null;
 148                 STR_CLS_PATH = null;
 149                 STR_RMI_PATH = null;
 150                 STR_RMI_HOSTNAME = null;
 151                 STR_LOG_FILE_PATH = null;
 152                 STR_SSH_USERNAME = null;
 153                 STR_ROUTER_ADD = null;
 154                 STR_MONITORING_HOST = null;
 155                 STR_ZB_GATEWAY_ADDRESS = null;
 156                 STR_ZB_GATEWAY_PORT = null;
 157                 STR_ZB_IOTMASTER_PORT = null;
 158                 STR_NUM_CALLBACK_PORTS = null;
 159                 BOOL_VERBOSE = false;
 160         }
 161
 162         /**
 163          * A method to initialize CommunicationHandler, LoadBalancer, RouterConfig and ObjectInitHandler
 164          *
 165          * @return void
 166          */
 167         private void initLiveDataStructure() {
 168
 169                 commHan = new CommunicationHandler(BOOL_VERBOSE);
 170                 lbIoT = new LoadBalancer(BOOL_VERBOSE);
 171                 lbIoT.setupLoadBalancer();
 172                 routerConfig = new RouterConfig();
 173                 routerConfig.getAddressList(STR_ROUTER_ADD);
 174                 objInitHand = new ObjectInitHandler(BOOL_VERBOSE);
 175                 objAddInitHand = new ObjectAddressInitHandler(BOOL_VERBOSE);
 176                 mapClassNameToCrim = new HashMap<String,ClassRuntimeInstrumenterMaster>();
 177         }
 178
 179         /**
 180          * A method to initialize constants from config file
 181          *
 182          * @return void
 183          */
 184         private void parseIoTMasterConfigFile() {
 185                 // Parse configuration file
 186                 Properties prop = new Properties();
 187                 String strCfgFileName = STR_IOT_MASTER_NAME + STR_CFG_FILE_EXT;
 188                 File file = new File(strCfgFileName);
 189                 FileInputStream fis = null;
 190                 try {
 191                         fis = new FileInputStream(file);
 192                         prop.load(fis);
 193                         fis.close();
 194                 } catch (IOException ex) {
 195                         System.out.println("IoTMaster: Error reading config file: " + strCfgFileName);
 196                         ex.printStackTrace();
 197                 }
 198                 // Initialize constants from config file
 199                 STR_MASTER_MAC_ADD = prop.getProperty("MAC_ADDRESS");
 200                 STR_IOT_CODE_PATH = prop.getProperty("IOT_CODE_PATH");
 201                 STR_CONT_PATH = prop.getProperty("CONTROLLERS_CODE_PATH");
 202                 STR_RUNTIME_DIR = prop.getProperty("RUNTIME_DIR");
 203                 STR_CLS_PATH = prop.getProperty("CLASS_PATH");
 204                 STR_RMI_PATH = prop.getProperty("RMI_PATH");
 205                 STR_RMI_HOSTNAME = prop.getProperty("RMI_HOSTNAME");
 206                 STR_LOG_FILE_PATH = prop.getProperty("LOG_FILE_PATH");
 207                 STR_SSH_USERNAME = prop.getProperty("SSH_USERNAME");
 208                 STR_ROUTER_ADD = prop.getProperty("ROUTER_ADD");
 209                 STR_MONITORING_HOST = prop.getProperty("MONITORING_HOST");
 210                 STR_ZB_GATEWAY_ADDRESS = prop.getProperty("ZIGBEE_GATEWAY_ADDRESS");
 211                 STR_ZB_GATEWAY_PORT = prop.getProperty("ZIGBEE_GATEWAY_PORT");
 212                 STR_ZB_IOTMASTER_PORT = prop.getProperty("ZIGBEE_IOTMASTER_PORT");
 213                 STR_NUM_CALLBACK_PORTS = prop.getProperty("NUMBER_CALLBACK_PORTS");
 214                 if(prop.getProperty("VERBOSE").equals(STR_YES)) {
 215                         BOOL_VERBOSE = true;
 216                 }
 217
 218                 RuntimeOutput.print("IoTMaster: Extracting information from config file: " + strCfgFileName, BOOL_VERBOSE);
 219                 RuntimeOutput.print("STR_MASTER_MAC_ADD=" + STR_MASTER_MAC_ADD, BOOL_VERBOSE);
 220                 RuntimeOutput.print("STR_IOT_CODE_PATH=" + STR_IOT_CODE_PATH, BOOL_VERBOSE);
 221                 RuntimeOutput.print("STR_CONT_PATH=" + STR_CONT_PATH, BOOL_VERBOSE);
 222                 RuntimeOutput.print("STR_RUNTIME_DIR=" + STR_RUNTIME_DIR, BOOL_VERBOSE);
 223                 RuntimeOutput.print("STR_CLS_PATH=" + STR_CLS_PATH, BOOL_VERBOSE);
 224                 RuntimeOutput.print("STR_RMI_PATH=" + STR_RMI_PATH, BOOL_VERBOSE);
 225                 RuntimeOutput.print("STR_RMI_HOSTNAME=" + STR_RMI_HOSTNAME, BOOL_VERBOSE);
 226                 RuntimeOutput.print("STR_LOG_FILE_PATH=" + STR_LOG_FILE_PATH, BOOL_VERBOSE);
 227                 RuntimeOutput.print("STR_SSH_USERNAME=" + STR_SSH_USERNAME, BOOL_VERBOSE);
 228                 RuntimeOutput.print("STR_ROUTER_ADD=" + STR_ROUTER_ADD, BOOL_VERBOSE);
 229                 RuntimeOutput.print("STR_MONITORING_HOST=" + STR_MONITORING_HOST, BOOL_VERBOSE);
 230                 RuntimeOutput.print("STR_ZB_GATEWAY_ADDRESS=" + STR_ZB_GATEWAY_ADDRESS, BOOL_VERBOSE);
 231                 RuntimeOutput.print("STR_ZB_GATEWAY_PORT=" + STR_ZB_GATEWAY_PORT, BOOL_VERBOSE);
 232                 RuntimeOutput.print("STR_ZB_IOTMASTER_PORT=" + STR_ZB_IOTMASTER_PORT, BOOL_VERBOSE);
 233                 RuntimeOutput.print("STR_NUM_CALLBACK_PORTS=" + STR_NUM_CALLBACK_PORTS, BOOL_VERBOSE);
 234                 RuntimeOutput.print("BOOL_VERBOSE=" + BOOL_VERBOSE, BOOL_VERBOSE);
 235                 RuntimeOutput.print("IoTMaster: Information extracted successfully!", BOOL_VERBOSE);
 236         }
 237
 238         /**
 239          * A method to parse information from a config file
 240          *
 241          * @param       strCfgFileName  Config file name
 242          * @param       strCfgField             Config file field name
 243          * @return      String
 244          */
 245         private String parseConfigFile(String strCfgFileName, String strCfgField) {
 246                 // Parse configuration file
 247                 Properties prop = new Properties();
 248                 File file = new File(strCfgFileName);
 249                 FileInputStream fis = null;
 250                 try {
 251                         fis = new FileInputStream(file);
 252                         prop.load(fis);
 253                         fis.close();
 254                 } catch (IOException ex) {
 255                         System.out.println("IoTMaster: Error reading config file: " + strCfgFileName);
 256                         ex.printStackTrace();
 257                 }
 258                 System.out.println("IoTMaster: Reading " + strCfgField +
 259                         " from config file: " + strCfgFileName + " with value: " +
 260                         prop.getProperty(strCfgField, null));
 261                 // NULL is returned if the property isn't found
 262                 return prop.getProperty(strCfgField, null);
 263         }
 264
 265         /**
 266          * A method to send files from IoTMaster
 267          *
 268          * @param  filesocket File socket object
 269          * @param  sFileName  File name
 270          * @param  lFLength   File length
 271          * @return            void
 272          */
 273         private void sendFile(Socket filesocket, String sFileName, long lFLength) throws IOException {
 274
 275                 File file = new File(sFileName);
 276                 byte[] bytFile = new byte[toIntExact(lFLength)];
 277                 InputStream inFileStream = new FileInputStream(file);
 278
 279                 OutputStream outFileStream = filesocket.getOutputStream();
 280                 int iCount;
 281                 while ((iCount = inFileStream.read(bytFile)) > 0) {
 282                         outFileStream.write(bytFile, 0, iCount);
 283                 }
 284                 filesocket.close();
 285                 RuntimeOutput.print("IoTMaster: File sent!", BOOL_VERBOSE);
 286         }
 287
 288         /**
 289          * A method to create a thread
 290          *
 291          * @param  sSSHCmd    SSH command
 292          * @return            void
 293          */
 294         private void createThread(String sSSHCmd) throws IOException {
 295
 296                 // Start a new thread to start a new JVM
 297                 new Thread() {
 298                         Runtime runtime = Runtime.getRuntime();
 299                         Process process = runtime.exec(sSSHCmd);
 300                 }.start();
 301                 RuntimeOutput.print("Executing: " + sSSHCmd, BOOL_VERBOSE);
 302         }
 303
 304         /**
 305          * A method to send command from master and receive reply from slave
 306          *
 307          * @params  msgSend     Message object
 308          * @params  strPurpose  String that prints purpose message
 309          * @params  inStream    Input stream
 310          * @params  outStream   Output stream
 311          * @return  void
 312          */
 313         private void commMasterToSlave(Message msgSend, String strPurpose,
 314                 ObjectInputStream inStream, ObjectOutputStream outStream)
 315                         throws IOException, ClassNotFoundException {
 316
 317                 // Send message/command from master
 318                 outStream.writeObject(msgSend);
 319                 RuntimeOutput.print("IoTMaster: Send message: " + strPurpose, BOOL_VERBOSE);
 320
 321                 // Get reply from slave as acknowledgment
 322                 Message msgReply = (Message) inStream.readObject();
 323                 RuntimeOutput.print("IoTMaster: Reply message: " + msgReply.getMessage(), BOOL_VERBOSE);
 324         }
 325
 326         /**
 327          * A private method to instrument IoTSet device
 328          *
 329          * @params  strFieldIdentifier        String field name + object ID
 330          * @params  strFieldName              String field name
 331          * @params  strIoTSlaveObjectHostAdd  String slave host address
 332          * @params  inStream                  ObjectInputStream communication
 333          * @params  inStream                  ObjectOutputStream communication
 334          * @return  void
 335          */
 336         private void instrumentIoTSetDevice(String strFieldIdentifier, String strFieldName, String strIoTSlaveObjectHostAdd,
 337                 ObjectInputStream inStream, ObjectOutputStream outStream)
 338                         throws IOException, ClassNotFoundException, InterruptedException {
 339
 340                 // Get information from the set
 341                 List<Object[]> listObject = objAddInitHand.getFields(strFieldIdentifier);
 342                 // Create a new IoTSet
 343                 Message msgCrtIoTSet = new MessageCreateSetRelation(IoTCommCode.CREATE_NEW_IOTSET, strFieldName);
 344                 commMasterToSlave(msgCrtIoTSet, "Create new IoTSet for IoTDeviceAddress!", inStream, outStream);
 345                 int iRows = listObject.size();
 346                 RuntimeOutput.print("IoTMaster: Number of rows for IoTDeviceAddress: " + iRows, BOOL_VERBOSE);
 347                 // Transfer the address
 348                 for(int iRow=0; iRow<iRows; iRow++) {
 349                         arrFieldValues = listObject.get(iRow);
 350                         // Get device address - if 00:00:00:00:00:00 that means it needs the driver object address (self)
 351                         String strDeviceAddress = null;
 352                         if (arrFieldValues[0].equals(STR_SELF_MAC_ADD)) {
 353                                 strDeviceAddress = strIoTSlaveObjectHostAdd;
 354                         } else {
 355                                 strDeviceAddress = routerConfig.getIPFromMACAddress((String) arrFieldValues[0]);
 356                         }
 357                         int iDestDeviceDriverPort = (int) arrFieldValues[1];
 358                         String strProtocol = (String) arrFieldValues[2];
 359                         // Check for wildcard feature
 360                         boolean bSrcPortWildCard = false;
 361                         boolean bDstPortWildCard = false;
 362                         if (arrFieldValues.length > 3) {
 363                                 bSrcPortWildCard = (boolean) arrFieldValues[3];
 364                                 bDstPortWildCard = (boolean) arrFieldValues[4];
 365                         }
 366                         // Add the port connection into communication handler - if it's not assigned yet
 367                         if (commHan.getComPort(strDeviceAddress) == null) {
 368                                 commHan.addPortConnection(strIoTSlaveObjectHostAdd, strDeviceAddress);
 369                         }
 370                         // Send address one by one
 371                         Message msgGetIoTSetObj = new MessageGetDeviceObject(IoTCommCode.GET_DEVICE_IOTSET_OBJECT,
 372                                 strDeviceAddress, commHan.getComPort(strDeviceAddress), iDestDeviceDriverPort,
 373                                 bSrcPortWildCard, bDstPortWildCard);
 374                         commMasterToSlave(msgGetIoTSetObj, "Get IoTSet objects!", inStream, outStream);
 375                 }
 376                 // Reinitialize IoTSet on device object
 377                 commMasterToSlave(new MessageSimple(IoTCommCode.REINITIALIZE_IOTSET_FIELD),
 378                         "Reinitialize IoTSet fields!", inStream, outStream);
 379         }
 380
 381
 382         /**
 383          * A private method to instrument IoTSet Zigbee device
 384          *
 385          * @params  Map.Entry<String,Object>  Entry of map IoTSet instrumentation
 386          * @params  strFieldName              String field name
 387          * @params  strIoTSlaveObjectHostAdd  String slave host address
 388          * @params  inStream                  ObjectInputStream communication
 389          * @params  inStream                  ObjectOutputStream communication
 390          * @return  void
 391          */
 392         private void instrumentIoTSetZBDevice(Map.Entry<String,Object> map, String strFieldName, String strIoTSlaveObjectHostAdd,
 393                 ObjectInputStream inStream, ObjectOutputStream outStream)
 394                         throws IOException, ClassNotFoundException, InterruptedException {
 395
 396                 // Get information from the set
 397                 SetInstrumenter setInstrumenter = (SetInstrumenter) map.getValue();
 398                 // Create a new IoTSet
 399                 Message msgCrtIoTSet = new MessageCreateSetRelation(IoTCommCode.CREATE_NEW_IOTSET, strFieldName);
 400                 commMasterToSlave(msgCrtIoTSet, "Create new IoTSet for IoTZigbeeAddress!", inStream, outStream);
 401                 // Prepare ZigbeeConfig
 402                 String strZigbeeGWAddress = routerConfig.getIPFromMACAddress(STR_ZB_GATEWAY_ADDRESS);
 403                 int iZigbeeGWPort = Integer.parseInt(STR_ZB_GATEWAY_PORT);
 404                 int iZigbeeIoTMasterPort = Integer.parseInt(STR_ZB_IOTMASTER_PORT);
 405                 commHan.addDevicePort(iZigbeeIoTMasterPort);
 406                 ZigbeeConfig zbConfig = new ZigbeeConfig(strZigbeeGWAddress, iZigbeeGWPort, iZigbeeIoTMasterPort,
 407                         BOOL_VERBOSE);
 408                 // Add the port connection into communication handler - if it's not assigned yet
 409                 if (commHan.getComPort(strZigbeeGWAddress) == null) {
 410                         commHan.addPortConnection(strIoTSlaveObjectHostAdd, strZigbeeGWAddress);
 411                 }
 412                 int iRows = setInstrumenter.numberOfRows();
 413                 RuntimeOutput.print("IoTMaster: Number of rows for IoTZigbeeAddress: " + iRows, BOOL_VERBOSE);
 414                 // Transfer the address
 415                 for(int iRow=0; iRow<iRows; iRow++) {
 416                         arrFieldValues = setInstrumenter.fieldValues(iRow);
 417                         // Get device address
 418                         String strZBDevAddress = (String) arrFieldValues[0];
 419                         // Send policy to Zigbee gateway - TODO: Need to clear policy first?
 420                         zbConfig.setPolicy(strIoTSlaveObjectHostAdd, commHan.getComPort(strZigbeeGWAddress), strZBDevAddress);
 421                         // Send address one by one
 422                         Message msgGetIoTSetZBObj = new MessageGetSimpleDeviceObject(IoTCommCode.GET_ZB_DEV_IOTSET_OBJECT,
 423                                 strZBDevAddress);
 424                         commMasterToSlave(msgGetIoTSetZBObj, "Get IoTSet objects!", inStream, outStream);
 425                 }
 426                 zbConfig.closeConnection();
 427                 // Reinitialize IoTSet on device object
 428                 commMasterToSlave(new MessageSimple(IoTCommCode.REINITIALIZE_IOTSET_FIELD),
 429                                                                                         "Reinitialize IoTSet fields!", inStream, outStream);
 430         }
 431
 432
 433         /**
 434          * A private method to instrument IoTSet of addresses
 435          *
 436          * @params  strFieldIdentifier        String field name + object ID
 437          * @params  strFieldName              String field name
 438          * @params  inStream                  ObjectInputStream communication
 439          * @params  inStream                  ObjectOutputStream communication
 440          * @return  void
 441          */
 442         private void instrumentIoTSetAddress(String strFieldIdentifier, String strFieldName,
 443                 ObjectInputStream inStream, ObjectOutputStream outStream)
 444                         throws IOException, ClassNotFoundException, InterruptedException {
 445
 446                 // Get information from the set
 447                 List<Object[]> listObject = objAddInitHand.getFields(strFieldIdentifier);
 448                 // Create a new IoTSet
 449                 Message msgCrtIoTSet = new MessageCreateSetRelation(IoTCommCode.CREATE_NEW_IOTSET, strFieldName);
 450                 commMasterToSlave(msgCrtIoTSet, "Create new IoTSet for IoTAddress!", inStream, outStream);
 451                 int iRows = listObject.size();
 452                 RuntimeOutput.print("IoTMaster: Number of rows for IoTAddress: " + iRows, BOOL_VERBOSE);
 453                 // Transfer the address
 454                 for(int iRow=0; iRow<iRows; iRow++) {
 455                         arrFieldValues = listObject.get(iRow);
 456                         // Get device address
 457                         String strAddress = (String) arrFieldValues[0];
 458                         // Send address one by one
 459                         Message msgGetIoTSetAddObj = new MessageGetSimpleDeviceObject(IoTCommCode.GET_ADD_IOTSET_OBJECT,
 460                                 strAddress);
 461                         commMasterToSlave(msgGetIoTSetAddObj, "Get IoTSet objects!", inStream, outStream);
 462                 }
 463                 // Reinitialize IoTSet on device object
 464                 commMasterToSlave(new MessageSimple(IoTCommCode.REINITIALIZE_IOTSET_FIELD),
 465                                                                                         "Reinitialize IoTSet fields!", inStream, outStream);
 466         }
 467
 468
 469         /**
 470          * A private method to instrument an object on a specific machine and setting up policies
 471          *
 472          * @params  strFieldObjectID  String field object ID
 473          * @return  void
 474          */
 475         private void instrumentObject(String strFieldObjectID) throws IOException {
 476
 477                 // Extract the interface name for RMI
 478                 // e.g. ProximitySensorInterface, TempSensorInterface, etc.
 479
 480                 String strObjCfgFile = STR_IOT_CODE_PATH + strObjClassName + "/" + strObjClassName + STR_CFG_FILE_EXT;
 481                 strObjClassInterfaceName = parseConfigFile(strObjCfgFile, STR_INTERFACE_CLS_CFG);
 482                 strObjStubClsIntfaceName = parseConfigFile(strObjCfgFile, STR_INT_STUB_CLS_CFG);
 483                 // Create an object name, e.g. ProximitySensorImplPS1
 484                 strObjName = strObjClassName + strFieldObjectID;
 485                 // Check first if host exists
 486                 if(commHan.objectExists(strObjName)) {
 487                         // If this object exists already ...
 488                         // Re-read IoTSlave object hostname for further reference
 489                         strIoTSlaveObjectHostAdd = commHan.getHostAddress(strObjName);
 490                         RuntimeOutput.print("IoTMaster: Object with name: " + strObjName + " has existed!", BOOL_VERBOSE);
 491                 } else {
 492                         // If this is a new object ... then create one
 493                         // Get host address for IoTSlave from LoadBalancer
 494                         //strIoTSlaveObjectHostAdd = lbIoT.selectHost();
 495                         strIoTSlaveObjectHostAdd = routerConfig.getIPFromMACAddress(lbIoT.selectHost());
 496                         if (strIoTSlaveControllerHostAdd == null)
 497                                 throw new Error("IoTMaster: Could not translate MAC to IP address! Please check the router's /tmp/dhcp.leases!");
 498                         RuntimeOutput.print("IoTMaster: Object name: " + strObjName, BOOL_VERBOSE);
 499                         // Add port connection and get port numbers
 500                         // Naming for objects ProximitySensor becomes ProximitySensor0, ProximitySensor1, etc.
 501                         commHan.addPortConnection(strIoTSlaveObjectHostAdd, strObjName);
 502                         commHan.addActiveControllerObject(strFieldObjectID, strObjName, strObjClassName, strObjClassInterfaceName,
 503                                 strObjStubClsIntfaceName, strIoTSlaveObjectHostAdd, arrFieldValues, arrFieldClasses);
 504                         // ROUTING POLICY: IoTMaster and device/controller object
 505                         // Master-slave communication
 506                         routerConfig.configureRouterMainPolicies(STR_ROUTER_ADD, strIoTMasterHostAdd,
 507                                 strIoTSlaveObjectHostAdd, STR_TCP_PROTOCOL, commHan.getComPort(strObjName));
 508                         // ROUTING POLICY: Send the same routing policy to both the hosts
 509                         routerConfig.configureHostMainPolicies(strIoTMasterHostAdd, strIoTMasterHostAdd,
 510                                 strIoTSlaveObjectHostAdd, STR_TCP_PROTOCOL, commHan.getComPort(strObjName));
 511                         routerConfig.configureHostMainPolicies(strIoTSlaveObjectHostAdd, strIoTMasterHostAdd,
 512                                 strIoTSlaveObjectHostAdd, STR_TCP_PROTOCOL, commHan.getComPort(strObjName));
 513                         // Need to accommodate callback functions here - open ports for TCP
 514                         routerConfig.configureRouterMainPolicies(STR_ROUTER_ADD, strIoTSlaveControllerHostAdd,
 515                                 strIoTSlaveObjectHostAdd, STR_TCP_PROTOCOL);
 516                         routerConfig.configureHostMainPolicies(strIoTSlaveControllerHostAdd, strIoTSlaveControllerHostAdd,
 517                                 strIoTSlaveObjectHostAdd, STR_TCP_PROTOCOL);
 518                         routerConfig.configureHostMainPolicies(strIoTSlaveObjectHostAdd, strIoTSlaveControllerHostAdd,
 519                                 strIoTSlaveObjectHostAdd, STR_TCP_PROTOCOL);
 520                         // Instrument the IoTSet declarations inside the class file
 521                         instrumentObjectIoTSet(strFieldObjectID);
 522                 }
 523                 // Send routing policy to router for controller object
 524                 // ROUTING POLICY: RMI communication - RMI registry and stub ports
 525                 routerConfig.configureRouterMainPolicies(STR_ROUTER_ADD, strIoTSlaveControllerHostAdd, strIoTSlaveObjectHostAdd,
 526                         STR_TCP_PROTOCOL, commHan.getRMIRegPort(strObjName));
 527                 routerConfig.configureRouterMainPolicies(STR_ROUTER_ADD, strIoTSlaveControllerHostAdd, strIoTSlaveObjectHostAdd,
 528                         STR_TCP_PROTOCOL, commHan.getRMIStubPort(strObjName));
 529                 // Send the same set of routing policies to compute nodes
 530                 routerConfig.configureHostMainPolicies(strIoTSlaveControllerHostAdd, strIoTSlaveControllerHostAdd, strIoTSlaveObjectHostAdd,
 531                         STR_TCP_PROTOCOL, commHan.getRMIRegPort(strObjName));
 532                 routerConfig.configureHostMainPolicies(strIoTSlaveObjectHostAdd, strIoTSlaveControllerHostAdd, strIoTSlaveObjectHostAdd,
 533                         STR_TCP_PROTOCOL, commHan.getRMIRegPort(strObjName));
 534                 routerConfig.configureHostMainPolicies(strIoTSlaveControllerHostAdd, strIoTSlaveControllerHostAdd, strIoTSlaveObjectHostAdd,
 535                         STR_TCP_PROTOCOL, commHan.getRMIStubPort(strObjName));
 536                 routerConfig.configureHostMainPolicies(strIoTSlaveObjectHostAdd, strIoTSlaveControllerHostAdd, strIoTSlaveObjectHostAdd,
 537                         STR_TCP_PROTOCOL, commHan.getRMIStubPort(strObjName));
 538                 // Send the same set of routing policies for callback ports
 539                 setCallbackPortsPolicy(strObjName, STR_ROUTER_ADD, strIoTSlaveControllerHostAdd, strIoTSlaveObjectHostAdd, STR_TCP_PROTOCOL);
 540         }
 541
 542         /**
 543          * A private method to set router policies for callback ports
 544          *
 545          * @params  strRouterAdd                                String router address
 546          * @params  strIoTSlaveControllerHostAdd        String slave controller host address
 547          * @params  strIoTSlaveObjectHostAdd            String slave object host address
 548          * @params      strProtocol                                             String protocol
 549          * @return  iPort                                                       Integer port number
 550          */
 551         private void setCallbackPortsPolicy(String strObjName, String strRouterAdd, String strIoTSlaveControllerHostAdd,
 552                 String strIoTSlaveObjectHostAdd, String strProtocol) {
 553
 554                 int iNumCallbackPorts = Integer.parseInt(STR_NUM_CALLBACK_PORTS);
 555                 Integer[] rmiCallbackPorts = commHan.getCallbackPorts(strObjName, iNumCallbackPorts);
 556                 // Iterate over port numbers and set up policies
 557                 for (int i=0; i<iNumCallbackPorts; i++) {
 558                         routerConfig.configureRouterMainPolicies(strRouterAdd, strIoTSlaveControllerHostAdd, strIoTSlaveObjectHostAdd,
 559                                 strProtocol, rmiCallbackPorts[i]);
 560                         routerConfig.configureHostMainPolicies(strIoTSlaveControllerHostAdd, strIoTSlaveControllerHostAdd, strIoTSlaveObjectHostAdd,
 561                                 strProtocol, rmiCallbackPorts[i]);
 562                         routerConfig.configureHostMainPolicies(strIoTSlaveObjectHostAdd, strIoTSlaveControllerHostAdd, strIoTSlaveObjectHostAdd,
 563                                 strProtocol, rmiCallbackPorts[i]);
 564                 }
 565         }
 566
 567         /**
 568          * A private method to set router policies for IoTDeviceAddress objects
 569          *
 570          * @params  strFieldIdentifier        String field name + object ID
 571          * @params  Map.Entry<String,Object>  Entry of map IoTSet instrumentation
 572          * @params  strIoTSlaveObjectHostAdd  String slave host address
 573          * @return  void
 574          */
 575         private void setRouterPolicyIoTSetDevice(String strFieldIdentifier, Map.Entry<String,Object> map,
 576                 String strIoTSlaveObjectHostAdd) {
 577
 578                 // Get information from the set
 579                 SetInstrumenter setInstrumenter = (SetInstrumenter) map.getValue();
 580                 int iRows = setInstrumenter.numberOfRows();
 581                 RuntimeOutput.print("IoTMaster: Number of rows for IoTDeviceAddress: " + iRows, BOOL_VERBOSE);
 582                 // Transfer the address
 583                 for(int iRow=0; iRow<iRows; iRow++) {
 584                         arrFieldValues = setInstrumenter.fieldValues(iRow);
 585                         objAddInitHand.addField(strFieldIdentifier, arrFieldValues);    // Save this for object instantiation
 586                         // Get device address - if 00:00:00:00:00:00 that means it needs the driver object address (self)
 587                         String strDeviceAddress = null;
 588                         if (arrFieldValues[0].equals(STR_SELF_MAC_ADD)) {
 589                                 strDeviceAddress = strIoTSlaveObjectHostAdd;
 590                         } else {
 591                                 strDeviceAddress = routerConfig.getIPFromMACAddress((String) arrFieldValues[0]);
 592                         }
 593                         int iDestDeviceDriverPort = (int) arrFieldValues[1];
 594                         String strProtocol = (String) arrFieldValues[2];
 595                         // Add the port connection into communication handler - if it's not assigned yet
 596                         if (commHan.getComPort(strDeviceAddress) == null) {
 597                                 commHan.addPortConnection(strIoTSlaveObjectHostAdd, strDeviceAddress);
 598                         }
 599                         // Send routing policy to router for device drivers and devices
 600                         // ROUTING POLICY: RMI communication - RMI registry and stub ports
 601                         if((iDestDeviceDriverPort == -1) && (!strProtocol.equals(STR_NO_PROTOCOL))) {
 602                                 // Port number -1 means that we don't set the policy strictly to port number level
 603                                 // "nopro" = no protocol specified for just TCP or just UDP (can be both used as well)
 604                                 // ROUTING POLICY: Device driver and device
 605                                 routerConfig.configureRouterMainPolicies(STR_ROUTER_ADD, strIoTSlaveObjectHostAdd, strDeviceAddress,
 606                                         strProtocol);
 607                                 // ROUTING POLICY: Send to the compute node where the device driver is
 608                                 routerConfig.configureHostMainPolicies(strIoTSlaveObjectHostAdd, strIoTSlaveObjectHostAdd,
 609                                         strDeviceAddress, strProtocol);
 610                         } else if((iDestDeviceDriverPort == -1) && (strProtocol.equals(STR_NO_PROTOCOL))) {
 611                                 routerConfig.configureRouterMainPolicies(STR_ROUTER_ADD, strIoTSlaveObjectHostAdd, strDeviceAddress);
 612                                 routerConfig.configureHostMainPolicies(strIoTSlaveObjectHostAdd, strIoTSlaveObjectHostAdd, strDeviceAddress);
 613                         } else if(strProtocol.equals(STR_TCPGW_PROTOCOL)) {
 614                                 // This is a TCP protocol that connects, e.g. a phone to our runtime system
 615                                 // that provides a gateway access (accessed through destination port number)
 616                                 commHan.addDevicePort(iDestDeviceDriverPort);
 617                                 routerConfig.configureRouterMainPolicies(STR_ROUTER_ADD, strIoTSlaveObjectHostAdd, strDeviceAddress,
 618                                         STR_TCP_PROTOCOL, iDestDeviceDriverPort);
 619                                 routerConfig.configureHostMainPolicies(strIoTSlaveObjectHostAdd, strIoTSlaveObjectHostAdd, strDeviceAddress,
 620                                         STR_TCP_PROTOCOL, iDestDeviceDriverPort);
 621                                 routerConfig.configureRouterHTTPPolicies(STR_ROUTER_ADD, strIoTSlaveObjectHostAdd, strDeviceAddress);
 622                                 routerConfig.configureHostHTTPPolicies(strIoTSlaveObjectHostAdd, strIoTSlaveObjectHostAdd, strDeviceAddress);
 623                         } else {
 624                                 // Other port numbers...
 625                                 commHan.addDevicePort(iDestDeviceDriverPort);
 626                                 routerConfig.configureRouterMainPolicies(STR_ROUTER_ADD, strIoTSlaveObjectHostAdd, strDeviceAddress,
 627                                         strProtocol, commHan.getComPort(strDeviceAddress), iDestDeviceDriverPort);
 628                                 routerConfig.configureHostMainPolicies(strIoTSlaveObjectHostAdd, strIoTSlaveObjectHostAdd, strDeviceAddress,
 629                                         strProtocol, commHan.getComPort(strDeviceAddress), iDestDeviceDriverPort);
 630                         }
 631                 }
 632         }
 633
 634         /**
 635          * A private method to set router policies for IoTAddress objects
 636          *
 637          * @params  strFieldIdentifier        String field name + object ID
 638          * @params  Map.Entry<String,Object>  Entry of map IoTSet instrumentation
 639          * @params  strHostAddress            String host address
 640          * @return  void
 641          */
 642         private void setRouterPolicyIoTSetAddress(String strFieldIdentifier, Map.Entry<String,Object> map,
 643                 String strHostAddress) {
 644
 645                 // Get information from the set
 646                 SetInstrumenter setInstrumenter = (SetInstrumenter) map.getValue();
 647                 int iRows = setInstrumenter.numberOfRows();
 648                 RuntimeOutput.print("IoTMaster: Number of rows for IoTAddress: " + iRows, BOOL_VERBOSE);
 649                 // Transfer the address
 650                 for(int iRow=0; iRow<iRows; iRow++) {
 651                         arrFieldValues = setInstrumenter.fieldValues(iRow);
 652                         objAddInitHand.addField(strFieldIdentifier, arrFieldValues);    // Save this for object instantiation
 653                         // Get device address
 654                         String strAddress = (String) arrFieldValues[0];
 655                         // Setting up router policies for HTTP/HTTPs
 656                         routerConfig.configureRouterHTTPPolicies(STR_ROUTER_ADD, strHostAddress, strAddress);
 657                         routerConfig.configureHostHTTPPolicies(strHostAddress, strHostAddress, strAddress);
 658                 }
 659         }
 660
 661         /**
 662          * A private method to instrument an object's IoTSet and IoTRelation field to up policies
 663          * <p>
 664          * Mostly the IoTSet fields would contain IoTDeviceAddress objects
 665          *
 666          * @params  strFieldObjectID  String field object ID
 667          * @return  void
 668          */
 669         private void instrumentObjectIoTSet(String strFieldObjectID) throws IOException {
 670
 671                 // If this is a new object ... then create one
 672                 // Instrument the class source code and look for IoTSet for device addresses
 673                 // e.g. @config private IoTSet<IoTDeviceAddress> lb_addresses;
 674                 String strObjectClassNamePath = STR_IOT_CODE_PATH + strObjClassName + "/" + strObjClassName + STR_CLS_FILE_EXT;
 675                 FileInputStream fis = new FileInputStream(strObjectClassNamePath);
 676                 ClassReader cr = new ClassReader(fis);
 677                 ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
 678                 // We need Object ID to instrument IoTDeviceAddress
 679                 ClassRuntimeInstrumenterMaster crim = new ClassRuntimeInstrumenterMaster(cw, strFieldObjectID, BOOL_VERBOSE);
 680                 cr.accept(crim, 0);
 681                 fis.close();
 682                 RuntimeOutput.print("IoTMaster: Going to instrument for " + strObjClassName + " with objectID " +
 683                         strFieldObjectID, BOOL_VERBOSE);
 684                 // Get the object and the class names
 685                 // Build objects for IoTSet and IoTRelation fields in the device object classes
 686                 mapClassNameToCrim.put(strObjClassName + strFieldObjectID, crim);
 687                 HashMap<String,Object> hmObjectFieldObjects = crim.getFieldObjects();
 688                 for(Map.Entry<String,Object> map : hmObjectFieldObjects.entrySet()) {
 689                         RuntimeOutput.print("IoTMaster: Object name: " + map.getValue().getClass().getName(), BOOL_VERBOSE);
 690                         // Iterate over HashMap and choose between processing
 691                         String strFieldName = map.getKey();
 692                         String strClassName = map.getValue().getClass().getName();
 693                         String strFieldIdentifier = strFieldName + strFieldObjectID;
 694                         if(strClassName.equals(STR_SET_INSTRUMENTER_CLS)) {
 695                                 SetInstrumenter setInstrumenter = (SetInstrumenter) map.getValue();
 696                                 if(setInstrumenter.getObjTableName().equals(STR_IOT_DEV_ADD_CLS)) {
 697                                 // Instrument the normal IoTDeviceAddress
 698                                         setRouterPolicyIoTSetDevice(strFieldIdentifier, map, strIoTSlaveObjectHostAdd);
 699                                 } else if(setInstrumenter.getObjTableName().equals(STR_IOT_ADD_CLS)) {
 700                                 // Instrument the IoTAddress
 701                                         setRouterPolicyIoTSetAddress(strFieldIdentifier, map, strIoTSlaveObjectHostAdd);
 702                                 } else if(setInstrumenter.getObjTableName().equals(STR_IOT_ZB_ADD_CLS)) {
 703                                 // Instrument the IoTZigbeeAddress - special feature for Zigbee device support
 704                                         RuntimeOutput.print("IoTMaster: IoTZigbeeAddress found! No router policy is set here..",
 705                                                 BOOL_VERBOSE);
 706                                 } else {
 707                                         String strErrMsg = "IoTMaster: Device driver object" +
 708                                                                                 " can only have IoTSet<IoTAddress>, IoTSet<IoTDeviceAddress>," +
 709                                                                                 " or IoTSet<IoTZigbeeAddress>!";
 710                                         throw new Error(strErrMsg);
 711                                 }
 712                         } else {
 713                                 String strErrMsg = "IoTMaster: Device driver object can only have IoTSet for addresses!";
 714                                 throw new Error(strErrMsg);
 715                         }
 716                 }
 717         }
 718
 719
 720         /**
 721          * A private method to create an object on a specific machine
 722          *
 723          * @params  strObjName                                  String object name
 724          * @params  strObjClassName                     String object class name
 725          * @params  strObjClassInterfaceName    String object class interface name
 726          * @params  strIoTSlaveObjectHostAdd    String IoTSlave host address
 727          * @params  strFieldObjectID                    String field object ID
 728          * @params  arrFieldValues                              Array of field values
 729          * @params  arrFieldClasses                             Array of field classes
 730          * @return  void
 731          */
 732         private void createObject(String strObjName, String strObjClassName, String strObjClassInterfaceName, String strObjStubClsIntfaceName,
 733                 String strIoTSlaveObjectHostAdd, String strFieldObjectID, Object[] arrFieldValues, Class[] arrFieldClasses)
 734                 throws IOException, FileNotFoundException, ClassNotFoundException, InterruptedException {
 735
 736                 // PROFILING
 737                 long start = 0;
 738                 long result = 0;
 739
 740                 // PROFILING
 741                 start = System.currentTimeMillis();
 742
 743                 // Construct ssh command line
 744                 // e.g. ssh rtrimana@dw-2.eecs.uci.edu cd <path>;
 745                 //      java -cp $CLASSPATH:./*.jar
 746                 //           -Djava.rmi.server.codebase=file:./*.jar
 747                 //           iotruntime.IoTSlave dw-1.eecs.uci.edu 46151 23829 42874 &
 748                 // The In-Port for IoTMaster is the Out-Port for IoTSlave and vice versa
 749                 String strSSHCommand = STR_SSH_USERNAME + strIoTSlaveObjectHostAdd + " cd " + STR_RUNTIME_DIR + " sudo java " +
 750                         STR_CLS_PATH + " " + STR_RMI_PATH + " " + STR_RMI_HOSTNAME +
 751                         strIoTSlaveObjectHostAdd + " " + STR_IOT_SLAVE_CLS + " " + strIoTMasterHostAdd + " " +
 752                         commHan.getComPort(strObjName) + " " + commHan.getRMIRegPort(strObjName) + " " +
 753                         commHan.getRMIStubPort(strObjName) + " >& " + STR_LOG_FILE_PATH + strObjName + ".log &";
 754                 RuntimeOutput.print(strSSHCommand, BOOL_VERBOSE);
 755                 // Start a new thread to start a new JVM
 756                 createThread(strSSHCommand);
 757                 ServerSocket serverSocket = new ServerSocket(commHan.getComPort(strObjName));
 758                 Socket socket = serverSocket.accept();
 759                 ObjectInputStream inStream = new ObjectInputStream(socket.getInputStream());
 760                 ObjectOutputStream outStream = new ObjectOutputStream(socket.getOutputStream());
 761
 762                 // PROFILING
 763                 result = System.currentTimeMillis()-start;
 764                 System.out.println("\n\n ==> Time needed to start JVM for " + strObjName + ": " + result + "\n\n");
 765
 766                 // PROFILING
 767                 start = System.currentTimeMillis();
 768
 769                 // Create message to transfer file first
 770                 String sFileName = strObjClassName + STR_JAR_FILE_EXT;
 771                 String sPath = STR_IOT_CODE_PATH + strObjClassName + "/" + sFileName;
 772                 File file = new File(sPath);
 773                 commMasterToSlave(new MessageSendFile(IoTCommCode.TRANSFER_FILE, sFileName, file.length()),
 774                         "Sending file!", inStream, outStream);
 775                 // Send file - JAR file for object creation
 776                 sendFile(serverSocket.accept(), sPath, file.length());
 777                 Message msgReply = (Message) inStream.readObject();
 778                 RuntimeOutput.print("IoTMaster: Reply message: " + msgReply.getMessage(), BOOL_VERBOSE);
 779
 780                 // PROFILING
 781                 result = System.currentTimeMillis()-start;
 782                 System.out.println("\n\n ==> Time needed to send JAR file for " + strObjName + ": " + result + "\n\n");
 783
 784                 // PROFILING
 785                 start = System.currentTimeMillis();
 786
 787                 // Pack object information to create object on a IoTSlave
 788                 Message msgObjIoTSlave = new MessageCreateObject(IoTCommCode.CREATE_OBJECT, strIoTSlaveObjectHostAdd,
 789                         strObjClassName, strObjName, strObjClassInterfaceName, strObjStubClsIntfaceName, commHan.getRMIRegPort(strObjName),
 790                         commHan.getRMIStubPort(strObjName), arrFieldValues, arrFieldClasses);
 791                 // Send message
 792                 commMasterToSlave(msgObjIoTSlave, "Sending object information", inStream, outStream);
 793                 // Instrument the class source code and look for IoTSet for device addresses
 794                 // e.g. @config private IoTSet<IoTDeviceAddress> lb_addresses;
 795                 RuntimeOutput.print("IoTMaster: Instantiating for " + strObjClassName + " with objectID " +
 796                         strFieldObjectID, BOOL_VERBOSE);
 797                 // Get the object and the class names
 798                 // Build objects for IoTSet and IoTRelation fields in the device object classes
 799                 ClassRuntimeInstrumenterMaster crim = mapClassNameToCrim.get(strObjClassName + strFieldObjectID);
 800                 HashMap<String,Object> hmObjectFieldObjects = crim.getFieldObjects();
 801                 for(Map.Entry<String,Object> map : hmObjectFieldObjects.entrySet()) {
 802                         RuntimeOutput.print("IoTMaster: Object name: " + map.getValue().getClass().getName(), BOOL_VERBOSE);
 803                         // Iterate over HashMap and choose between processing
 804                         String strFieldName = map.getKey();
 805                         String strClassName = map.getValue().getClass().getName();
 806                         String strFieldIdentifier = strFieldName + strFieldObjectID;
 807                         if(strClassName.equals(STR_SET_INSTRUMENTER_CLS)) {
 808                                 SetInstrumenter setInstrumenter = (SetInstrumenter) map.getValue();
 809                                 if(setInstrumenter.getObjTableName().equals(STR_IOT_DEV_ADD_CLS)) {
 810                                 // Instrument the normal IoTDeviceAddress
 811                                         synchronized(this) {
 812                                                 instrumentIoTSetDevice(strFieldIdentifier, strFieldName, strIoTSlaveObjectHostAdd, inStream, outStream);
 813                                         }
 814                                 } else if(setInstrumenter.getObjTableName().equals(STR_IOT_ZB_ADD_CLS)) {
 815                                 // Instrument the IoTZigbeeAddress - special feature for Zigbee device support
 816                                         synchronized(this) {
 817                                                 instrumentIoTSetZBDevice(map, strFieldName, strIoTSlaveObjectHostAdd, inStream, outStream);
 818                                         }
 819                                 } else if(setInstrumenter.getObjTableName().equals(STR_IOT_ADD_CLS)) {
 820                                 // Instrument the IoTAddress
 821                                         synchronized(this) {
 822                                                 instrumentIoTSetAddress(strFieldIdentifier, strFieldName, inStream, outStream);
 823                                         }
 824                                 } else {
 825                                         String strErrMsg = "IoTMaster: Device driver object" +
 826                                                                                 " can only have IoTSet<IoTAddress>, IoTSet<IoTDeviceAddress>," +
 827                                                                                 " or IoTSet<IoTZigbeeAddress>!";
 828                                         throw new Error(strErrMsg);
 829                                 }
 830                         } else {
 831                                 String strErrMsg = "IoTMaster: Device driver object can only have IoTSet for addresses!";
 832                                 throw new Error(strErrMsg);
 833                         }
 834                 }
 835                 // End the session
 836                 // TODO: Change this later
 837                 outStream.writeObject(new MessageSimple(IoTCommCode.END_SESSION));
 838
 839                 // PROFILING
 840                 result = System.currentTimeMillis()-start;
 841                 System.out.println("\n\n ==> Time needed to create object " + strObjName + " and instrument IoTDeviceAddress: " + result + "\n\n");
 842
 843                 // Closing streams
 844                 outStream.close();
 845                 inStream.close();
 846                 socket.close();
 847                 serverSocket.close();
 848         }
 849
 850
 851         /**
 852          * A private method to create controller objects
 853          *
 854          * @return  void
 855          */
 856         private void createControllerObjects() throws InterruptedException {
 857
 858                 // Create a list of threads
 859                 List<Thread> threads = new ArrayList<Thread>();
 860                 // Get the list of active controller objects and loop it
 861                 List<String> listActiveControllerObject = commHan.getActiveControllerObjectList();
 862                 for(String strObjName : listActiveControllerObject) {
 863
 864                         ObjectCreationInfo objCrtInfo = commHan.getObjectCreationInfo(strObjName);
 865                         Thread objectThread = new Thread(new Runnable() {
 866                                 public void run() {
 867                                         synchronized(this) {
 868                                                 try {
 869                                                         createObject(strObjName, objCrtInfo.getObjectClassName(), objCrtInfo.getObjectClassInterfaceName(),
 870                                                                 objCrtInfo.getObjectStubClassInterfaceName(), objCrtInfo.getIoTSlaveObjectHostAdd(),
 871                                                                 commHan.getFieldObjectID(strObjName), commHan.getArrayFieldValues(strObjName),
 872                                                                 commHan.getArrayFieldClasses(strObjName));
 873                                                 } catch (IOException                    |
 874                                                                  ClassNotFoundException |
 875                                                                  InterruptedException ex) {
 876                                                         ex.printStackTrace();
 877                                                 }
 878                                         }
 879                                 }
 880                         });
 881                         threads.add(objectThread);
 882                         objectThread.start();
 883                 }
 884                 // Join all threads
 885                 for (Thread thread : threads) {
 886                         try {
 887                                 thread.join();
 888                         } catch (InterruptedException ex) {
 889                                 ex.printStackTrace();
 890                         }
 891                 }
 892         }
 893
 894
 895         /**
 896          * A private method to instrument IoTSet
 897          *
 898          * @params  Map.Entry<String,Object>  Entry of map IoTSet instrumentation
 899          * @params  strFieldName              String field name
 900          * @return  void
 901          */
 902         private void instrumentIoTSet(Map.Entry<String,Object> map, String strFieldName)
 903                 throws IOException, ClassNotFoundException, InterruptedException {
 904
 905                 // Get information from the set
 906                 SetInstrumenter setInstrumenter = (SetInstrumenter) map.getValue();
 907                 objInitHand.addField(strFieldName, IoTCommCode.CREATE_NEW_IOTSET);
 908
 909                 int iRows = setInstrumenter.numberOfRows();
 910                 for(int iRow=0; iRow<iRows; iRow++) {
 911                         // Get field classes and values
 912                         arrFieldClasses = setInstrumenter.fieldClasses(iRow);
 913                         arrFieldValues = setInstrumenter.fieldValues(iRow);
 914                         // Get object ID and class name
 915                         String strObjID = setInstrumenter.fieldObjectID(iRow);
 916                         strObjClassName = setInstrumenter.fieldEntryType(strObjID);
 917                         // Call the method to create an object
 918                         instrumentObject(strObjID);
 919                         int iNumOfPorts = Integer.parseInt(STR_NUM_CALLBACK_PORTS);
 920                         objInitHand.addObjectIntoField(strFieldName, strIoTSlaveObjectHostAdd, strObjName,
 921                                 strObjClassName, strObjClassInterfaceName, strObjStubClsIntfaceName, commHan.getRMIRegPort(strObjName),
 922                                 commHan.getRMIStubPort(strObjName), commHan.getCallbackPorts(strObjName, iNumOfPorts));
 923                 }
 924         }
 925
 926
 927         /**
 928          * A private method to instrument IoTRelation
 929          *
 930          * @params  Map.Entry<String,Object>  Entry of map IoTRelation instrumentation
 931          * @params  strFieldName              String field name
 932          * @return  void
 933          */
 934         private void instrumentIoTRelation(Map.Entry<String,Object> map, String strFieldName)
 935                 throws IOException, ClassNotFoundException, InterruptedException {
 936
 937                         // Get information from the set
 938                 RelationInstrumenter relationInstrumenter = (RelationInstrumenter) map.getValue();
 939                 int iRows = relationInstrumenter.numberOfRows();
 940                 objInitHand.addField(strFieldName, IoTCommCode.CREATE_NEW_IOTRELATION);
 941
 942                 for(int iRow=0; iRow<iRows; iRow++) {
 943                         // Operate on the first set first
 944                         arrFieldClasses = relationInstrumenter.firstFieldClasses(iRow);
 945                         arrFieldValues = relationInstrumenter.firstFieldValues(iRow);
 946                         String strObjID = relationInstrumenter.firstFieldObjectID(iRow);
 947                         strObjClassName = relationInstrumenter.firstEntryFieldType(strObjID);
 948                         // Call the method to create an object
 949                         instrumentObject(strObjID);
 950                         // Get the first object controller host address
 951                         String strFirstIoTSlaveObjectHostAdd = strIoTSlaveObjectHostAdd;
 952                         int iNumOfPorts = Integer.parseInt(STR_NUM_CALLBACK_PORTS);
 953                         objInitHand.addObjectIntoField(strFieldName, strIoTSlaveObjectHostAdd, strObjName,
 954                                 strObjClassName, strObjClassInterfaceName, strObjStubClsIntfaceName,
 955                                 commHan.getRMIRegPort(strObjName), commHan.getRMIStubPort(strObjName),
 956                                 commHan.getCallbackPorts(strObjName, iNumOfPorts));
 957                         // Operate on the second set
 958                         arrFieldClasses = relationInstrumenter.secondFieldClasses(iRow);
 959                         arrFieldValues = relationInstrumenter.secondFieldValues(iRow);
 960                         strObjID = relationInstrumenter.secondFieldObjectID(iRow);
 961                         strObjClassName = relationInstrumenter.secondEntryFieldType(strObjID);
 962                         // Call the method to create an object
 963                         instrumentObject(strObjID);
 964                         // Get the second object controller host address
 965                         String strSecondIoTSlaveObjectHostAdd = strIoTSlaveObjectHostAdd;
 966                         objInitHand.addSecondObjectIntoField(strFieldName, strIoTSlaveObjectHostAdd, strObjName,
 967                                 strObjClassName, strObjClassInterfaceName, strObjStubClsIntfaceName,
 968                                 commHan.getRMIRegPort(strObjName), commHan.getRMIStubPort(strObjName),
 969                                 commHan.getCallbackPorts(strObjName, iNumOfPorts));
 970
 971                         // ROUTING POLICY: first and second controller objects in IoTRelation
 972                         routerConfig.configureRouterMainPolicies(STR_ROUTER_ADD, strFirstIoTSlaveObjectHostAdd,
 973                                 strSecondIoTSlaveObjectHostAdd, STR_TCP_PROTOCOL);
 974                         // ROUTING POLICY: Send the same routing policy to both the hosts
 975                         routerConfig.configureHostMainPolicies(strFirstIoTSlaveObjectHostAdd, strFirstIoTSlaveObjectHostAdd,
 976                                 strSecondIoTSlaveObjectHostAdd, STR_TCP_PROTOCOL);
 977                         routerConfig.configureHostMainPolicies(strSecondIoTSlaveObjectHostAdd, strFirstIoTSlaveObjectHostAdd,
 978                                 strSecondIoTSlaveObjectHostAdd, STR_TCP_PROTOCOL);
 979                 }
 980         }
 981
 982         /**
 983          * A method to reinitialize IoTSet and IoTRelation in the code based on ObjectInitHandler information
 984          *
 985          * @params  inStream                  ObjectInputStream communication
 986          * @params  outStream                 ObjectOutputStream communication
 987          * @return      void
 988          */
 989         private void initializeSetsAndRelations(ObjectInputStream inStream, ObjectOutputStream outStream)
 990                 throws IOException, ClassNotFoundException {
 991                 // Get list of fields
 992                 List<String> strFields = objInitHand.getListOfFields();
 993                 // Iterate on HostAddress
 994                 for(String str : strFields) {
 995                         IoTCommCode iotcommMsg = objInitHand.getFieldMessage(str);
 996                         if (iotcommMsg == IoTCommCode.CREATE_NEW_IOTSET) {
 997                                 // == COMMUNICATION WITH IOTSLAVE CONTROLLER TO CREATE IOTSET
 998                                 Message msgCrtIoTSet = new MessageCreateSetRelation(IoTCommCode.CREATE_NEW_IOTSET, str);
 999                                 commMasterToSlave(msgCrtIoTSet, "Create new IoTSet!", inStream, outStream);
1000                                 List<ObjectInitInfo> listObject = objInitHand.getListObjectInitInfo(str);
1001                                 for (ObjectInitInfo objInitInfo : listObject) {
1002                                         // == COMMUNICATION WITH IOTSLAVE CONTROLLER TO FILL IN IOTSET
1003                                         commMasterToSlave(new MessageGetObject(IoTCommCode.GET_IOTSET_OBJECT, objInitInfo.getIoTSlaveObjectHostAdd(),
1004                                                 objInitInfo.getObjectName(), objInitInfo.getObjectClassName(), objInitInfo.getObjectClassInterfaceName(),
1005                                                 objInitInfo.getObjectStubClassInterfaceName(), objInitInfo.getRMIRegistryPort(), objInitInfo.getRMIStubPort(),
1006                                                 objInitInfo.getRMICallbackPorts()), "Get IoTSet object!", inStream, outStream);
1007                                 }
1008                                 // == COMMUNICATION WITH IOTSLAVE CONTROLLER TO REINITIALIZE IOTSET FIELD
1009                                 commMasterToSlave(new MessageSimple(IoTCommCode.REINITIALIZE_IOTSET_FIELD),
1010                                         "Renitialize IoTSet field!", inStream, outStream);
1011                         } else if (iotcommMsg == IoTCommCode.CREATE_NEW_IOTRELATION) {
1012                                 // == COMMUNICATION WITH IOTSLAVE CONTROLLER TO CREATE IOTRELATION
1013                                 Message msgCrtIoTRel = new MessageCreateSetRelation(IoTCommCode.CREATE_NEW_IOTRELATION, str);
1014                                 commMasterToSlave(msgCrtIoTRel, "Create new IoTRelation!", inStream, outStream);
1015                                 List<ObjectInitInfo> listObject = objInitHand.getListObjectInitInfo(str);
1016                                 List<ObjectInitInfo> listSecondObject = objInitHand.getSecondObjectInitInfo(str);
1017                                 Iterator it = listSecondObject.iterator();
1018                                 for (ObjectInitInfo objInitInfo : listObject) {
1019                                         // == COMMUNICATION WITH IOTSLAVE CONTROLLER TO FILL IN IOTRELATION (FIRST OBJECT)
1020                                         commMasterToSlave(new MessageGetObject(IoTCommCode.GET_IOTRELATION_FIRST_OBJECT,
1021                                                 objInitInfo.getIoTSlaveObjectHostAdd(), objInitInfo.getObjectName(), objInitInfo.getObjectClassName(),
1022                                                 objInitInfo.getObjectClassInterfaceName(), objInitInfo.getObjectStubClassInterfaceName(),
1023                                                 objInitInfo.getRMIRegistryPort(), objInitInfo.getRMIStubPort(), objInitInfo.getRMICallbackPorts()),
1024                                                 "Get IoTRelation first object!", inStream, outStream);
1025                                         ObjectInitInfo objSecObj = (ObjectInitInfo) it.next();
1026                                         // == COMMUNICATION WITH IOTSLAVE CONTROLLER TO FILL IN IOTRELATION (SECOND OBJECT)
1027                                         commMasterToSlave(new MessageGetObject(IoTCommCode.GET_IOTRELATION_SECOND_OBJECT,
1028                                                 objSecObj.getIoTSlaveObjectHostAdd(), objSecObj.getObjectName(), objSecObj.getObjectClassName(),
1029                                                 objSecObj.getObjectClassInterfaceName(), objInitInfo.getObjectStubClassInterfaceName(),
1030                                                 objSecObj.getRMIRegistryPort(), objSecObj.getRMIStubPort(), objSecObj.getRMICallbackPorts()),
1031                                                 "Get IoTRelation second object!", inStream, outStream);
1032                                 }
1033                                 // == COMMUNICATION WITH IOTSLAVE CONTROLLER TO REINITIALIZE IOTRELATION FIELD
1034                                 commMasterToSlave(new MessageSimple(IoTCommCode.REINITIALIZE_IOTRELATION_FIELD),
1035                                         "Renitialize IoTRelation field!", inStream, outStream);
1036                         }
1037                 }
1038         }
1039
1040         /**
1041          * A method to set router basic policies at once
1042          *
1043          * @param       strRouter String router name
1044          * @return      void
1045          */
1046         private void setRouterBasicPolicies(String strRouter) {
1047
1048                 String strMonitorHost = routerConfig.getIPFromMACAddress(STR_MONITORING_HOST);
1049                 routerConfig.configureRouterICMPPolicies(strRouter, strMonitorHost);
1050                 routerConfig.configureRouterDHCPPolicies(strRouter);
1051                 routerConfig.configureRouterDNSPolicies(strRouter);
1052                 routerConfig.configureRouterSSHPolicies(strRouter, strMonitorHost);
1053                 routerConfig.configureRejectPolicies(strRouter);
1054         }
1055
1056         /**
1057          * A method to set host basic policies at once
1058          *
1059          * @param       strHost String host name
1060          * @return      void
1061          */
1062         private void setHostBasicPolicies(String strHost) {
1063
1064                 String strMonitorHost = routerConfig.getIPFromMACAddress(STR_MONITORING_HOST);
1065                 routerConfig.configureHostDHCPPolicies(strHost);
1066                 routerConfig.configureHostDNSPolicies(strHost);
1067                 if (strHost.equals(strMonitorHost)) {
1068                 // Check if this is the monitoring host
1069                         routerConfig.configureHostICMPPolicies(strHost);
1070                         routerConfig.configureHostSSHPolicies(strHost);
1071                 } else {
1072                         routerConfig.configureHostICMPPolicies(strHost, strMonitorHost);
1073                         routerConfig.configureHostSSHPolicies(strHost, strMonitorHost);
1074                 }
1075                 // Apply SQL allowance policies to master host
1076                 if (strHost.equals(strIoTMasterHostAdd)) {
1077                         routerConfig.configureHostSQLPolicies(strHost);
1078                 }
1079                 routerConfig.configureRejectPolicies(strHost);
1080         }
1081
1082         /**
1083          * A method to create a thread for policy deployment
1084          *
1085          * @param  strRouterAddress             String router address to configure
1086          * @param  setHostAddresses             Set of strings for host addresses to configure
1087          * @return                              void
1088          */
1089         private void createPolicyThreads(String strRouterAddress, Set<String> setHostAddresses) throws IOException {
1090
1091                 // Create a list of threads
1092                 List<Thread> threads = new ArrayList<Thread>();
1093                 // Start threads for hosts
1094                 for(String strAddress : setHostAddresses) {
1095                         Thread policyThread = new Thread(new Runnable() {
1096                                 public void run() {
1097                                         synchronized(this) {
1098                                                 routerConfig.sendHostPolicies(strAddress);
1099                                         }
1100                                 }
1101                         });
1102                         threads.add(policyThread);
1103                         policyThread.start();
1104                         RuntimeOutput.print("Deploying policies for: " + strAddress, BOOL_VERBOSE);
1105                 }
1106                 // A thread for router
1107                 Thread policyThread = new Thread(new Runnable() {
1108                         public void run() {
1109                                 synchronized(this) {
1110                                         routerConfig.sendRouterPolicies(strRouterAddress);
1111                                 }
1112                         }
1113                 });
1114                 threads.add(policyThread);
1115                 policyThread.start();
1116                 RuntimeOutput.print("Deploying policies on router: " + strRouterAddress, BOOL_VERBOSE);
1117                 // Join all threads
1118                 for (Thread thread : threads) {
1119                         try {
1120                                 thread.join();
1121                         } catch (InterruptedException ex) {
1122                                 ex.printStackTrace();
1123                         }
1124                 }
1125         }
1126
1127
1128         /**
1129          * A method to assign objects to multiple JVMs, including
1130          * the controller/device object that uses other objects
1131          * in IoTSet and IoTRelation
1132          *
1133          * @return       void
1134          */
1135         private void createObjects() {
1136
1137                 // PROFILING
1138                 long start = 0;
1139                 long result = 0;
1140
1141                 try {
1142                         // Extract hostname for this IoTMaster from MySQL DB
1143                         strIoTMasterHostAdd = routerConfig.getIPFromMACAddress(STR_MASTER_MAC_ADD);
1144                         // Loop as we can still find controller/device classes
1145                         for(int i=0; i<strObjectNames.length; i++) {
1146                                 // PROFILING
1147                                 start = System.currentTimeMillis();
1148
1149                                 // Assign a new list of PrintWriter objects
1150                                 routerConfig.renewPrintWriter();
1151                                 // Get controller names one by one
1152                                 String strObjControllerName = strObjectNames[i];
1153                                 // Use LoadBalancer to assign a host address
1154                                 //strIoTSlaveControllerHostAdd = lbIoT.selectHost();
1155                                 strIoTSlaveControllerHostAdd = routerConfig.getIPFromMACAddress(lbIoT.selectHost());
1156                                 if (strIoTSlaveControllerHostAdd == null)
1157                                         throw new Error("IoTMaster: Could not translate MAC to IP address! Please check the router's /tmp/dhcp.leases!");
1158                                 // == START INITIALIZING CONTROLLER/DEVICE IOTSLAVE ==
1159                                 // Add port connection and get port numbers
1160                                 // Naming for objects ProximitySensor becomes ProximitySensor0, ProximitySensor1, etc.
1161                                 commHan.addPortConnection(strIoTSlaveControllerHostAdd, strObjControllerName);
1162                                 // ROUTING POLICY: IoTMaster and main controller object
1163                                 routerConfig.configureRouterMainPolicies(STR_ROUTER_ADD, strIoTMasterHostAdd,
1164                                         strIoTSlaveControllerHostAdd, STR_TCP_PROTOCOL, commHan.getComPort(strObjControllerName));
1165                                 // ROUTING POLICY: Send the same routing policy to both the hosts
1166                                 routerConfig.configureHostMainPolicies(strIoTMasterHostAdd, strIoTMasterHostAdd,
1167                                         strIoTSlaveControllerHostAdd, STR_TCP_PROTOCOL, commHan.getComPort(strObjControllerName));
1168                                 routerConfig.configureHostMainPolicies(strIoTSlaveControllerHostAdd, strIoTMasterHostAdd,
1169                                         strIoTSlaveControllerHostAdd, STR_TCP_PROTOCOL, commHan.getComPort(strObjControllerName));
1170
1171                                 // Construct ssh command line and create a controller thread for e.g. AcmeProximity
1172                                 String strSSHCommand = STR_SSH_USERNAME + strIoTSlaveControllerHostAdd + " cd " +
1173                                         STR_RUNTIME_DIR + " sudo java " + STR_CLS_PATH + " " +
1174                                         STR_RMI_PATH + " " + STR_IOT_SLAVE_CLS + " " + strIoTMasterHostAdd + " " +
1175                                         commHan.getComPort(strObjControllerName) + " " +
1176                                         commHan.getRMIRegPort(strObjControllerName) + " " +
1177                                         commHan.getRMIStubPort(strObjControllerName) + " >& " +
1178                                         STR_LOG_FILE_PATH + strObjControllerName + ".log &";
1179                                 RuntimeOutput.print(strSSHCommand, BOOL_VERBOSE);
1180                                 createThread(strSSHCommand);
1181                                 // Wait for connection
1182                                 // Create a new socket for communication
1183                                 ServerSocket serverSocket = new ServerSocket(commHan.getComPort(strObjControllerName));
1184                                 Socket socket = serverSocket.accept();
1185                                 ObjectInputStream inStream = new ObjectInputStream(socket.getInputStream());
1186                                 ObjectOutputStream outStream = new ObjectOutputStream(socket.getOutputStream());
1187                                 RuntimeOutput.print("IoTMaster: Communication established!", BOOL_VERBOSE);
1188
1189                                 // PROFILING
1190                                 result = System.currentTimeMillis()-start;
1191                                 System.out.println("\n\n ==> From start until after SSH for main controller: " + result);
1192                                 // PROFILING
1193                                 start = System.currentTimeMillis();
1194
1195                                 // Send files for every controller class
1196                                 // e.g. AcmeProximity.jar and AcmeProximity.zip
1197                                 String strControllerClassName = strObjControllerName + STR_CLS_FILE_EXT;
1198                                 String strControllerClassNamePath = STR_CONT_PATH + strObjControllerName + "/" +
1199                                         strControllerClassName;
1200                                 // Send .jar file
1201                                 String strControllerJarName = strObjControllerName + STR_JAR_FILE_EXT;
1202                                 String strControllerJarNamePath = STR_CONT_PATH + strObjControllerName + "/" +
1203                                         strControllerJarName;
1204                                 File file = new File(strControllerJarNamePath);
1205                                 commMasterToSlave(new MessageSendFile(IoTCommCode.TRANSFER_FILE, strControllerJarName, file.length()),
1206                                         "Sending file!", inStream, outStream);
1207                                 // Send file - Class file for object creation
1208                                 sendFile(serverSocket.accept(), strControllerJarNamePath, file.length());
1209                                 Message msgReply = (Message) inStream.readObject();
1210                                 RuntimeOutput.print("IoTMaster: Reply message: " + msgReply.getMessage(), BOOL_VERBOSE);
1211                                 // Send .zip file if additional zip file is specified
1212                                 String strObjCfgFile = strObjControllerName + STR_CFG_FILE_EXT;
1213                                 String strObjCfgFilePath = STR_CONT_PATH + strObjControllerName + "/" + strObjCfgFile;
1214                                 String strAdditionalFile = parseConfigFile(strObjCfgFilePath, STR_FILE_TRF_CFG);
1215                                 if (strAdditionalFile.equals(STR_YES)) {
1216                                         String strControllerCmpName = strObjControllerName + STR_ZIP_FILE_EXT;
1217                                         String strControllerCmpNamePath = STR_CONT_PATH + strObjControllerName + "/" +
1218                                                 strControllerCmpName;
1219                                         file = new File(strControllerCmpNamePath);
1220                                         commMasterToSlave(new MessageSendFile(IoTCommCode.TRANSFER_FILE, strControllerCmpName, file.length()),
1221                                                 "Sending file!", inStream, outStream);
1222                                         // Send file - Class file for object creation
1223                                         sendFile(serverSocket.accept(), strControllerCmpNamePath, file.length());
1224                                         msgReply = (Message) inStream.readObject();
1225                                         RuntimeOutput.print("IoTMaster: Reply message: " + msgReply.getMessage(), BOOL_VERBOSE);
1226                                 }
1227                                 // Create main controller/device object
1228                                 commMasterToSlave(new MessageCreateMainObject(IoTCommCode.CREATE_MAIN_OBJECT, strObjControllerName),
1229                                         "Create main object!", inStream, outStream);
1230
1231                                 // PROFILING
1232                                 result = System.currentTimeMillis()-start;
1233                                 System.out.println("\n\n ==> From IoTSlave start until main controller object is created: " + result);
1234                                 System.out.println(" ==> Including file transfer times!\n\n");
1235                                 // PROFILING
1236                                 start = System.currentTimeMillis();
1237
1238                                 // == END INITIALIZING CONTROLLER/DEVICE IOTSLAVE ==
1239                                 // Instrumenting one file
1240                                 RuntimeOutput.print("IoTMaster: Opening class file: " + strControllerClassName, BOOL_VERBOSE);
1241                                 RuntimeOutput.print("IoTMaster: Class file path: " + strControllerClassNamePath, BOOL_VERBOSE);
1242                                 FileInputStream fis = new FileInputStream(strControllerClassNamePath);
1243                                 ClassReader cr = new ClassReader(fis);
1244                                 ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
1245                                 ClassRuntimeInstrumenterMaster crim = new ClassRuntimeInstrumenterMaster(cw, null, BOOL_VERBOSE);
1246                                 cr.accept(crim, 0);
1247                                 fis.close();
1248                                 // Get the object and the class names
1249                                 // Build objects for IoTSet and IoTRelation fields in the controller/device classes
1250                                 HashMap<String,Object> hmControllerFieldObjects = crim.getFieldObjects();
1251                                 for(Map.Entry<String,Object> map : hmControllerFieldObjects.entrySet()) {
1252                                         RuntimeOutput.print("IoTMaster: Object name: " + map.getValue().getClass().getName(), BOOL_VERBOSE);
1253                                         // Iterate over HashMap and choose between processing
1254                                         // SetInstrumenter vs. RelationInstrumenter
1255                                         String strFieldName = map.getKey();
1256                                         String strClassName = map.getValue().getClass().getName();
1257                                         if(strClassName.equals(STR_SET_INSTRUMENTER_CLS)) {
1258                                                 SetInstrumenter setInstrumenter = (SetInstrumenter) map.getValue();
1259                                                 if(setInstrumenter.getObjTableName().equals(STR_IOT_DEV_ADD_CLS)) {
1260                                                         String strErrMsg = "IoTMaster: Controller object" +
1261                                                                 " cannot have IoTSet<IoTDeviceAddress>!";
1262                                                         throw new Error(strErrMsg);
1263                                                 } else if(setInstrumenter.getObjTableName().equals(STR_IOT_ZB_ADD_CLS)) {
1264                                                         String strErrMsg = "IoTMaster: Controller object" +
1265                                                                 " cannot have IoTSet<ZigbeeAddress>!";
1266                                                         throw new Error(strErrMsg);
1267                                                 } else if(setInstrumenter.getObjTableName().equals(STR_IOT_ADD_CLS)) {
1268                                                 // Instrument the IoTAddress
1269                                                         setRouterPolicyIoTSetAddress(strFieldName, map, strIoTSlaveControllerHostAdd);
1270                                                         instrumentIoTSetAddress(strFieldName, strFieldName, inStream, outStream);
1271                                                 } else {
1272                                                 // Any other cases
1273                                                         instrumentIoTSet(map, strFieldName);
1274                                                 }
1275                                         } else if (strClassName.equals(STR_REL_INSTRUMENTER_CLS)) {
1276                                                 instrumentIoTRelation(map, strFieldName);
1277                                         }
1278                                 }
1279                                 // PROFILING
1280                                 result = System.currentTimeMillis()-start;
1281                                 System.out.println("\n\n ==> Time needed to instrument device driver objects: " + result + "\n\n");
1282                                 System.out.println(" ==> #Objects: " + commHan.getActiveControllerObjectList().size() + "\n\n");
1283
1284                                 // PROFILING
1285                                 start = System.currentTimeMillis();
1286
1287                                 // ROUTING POLICY: Deploy basic policies if this is the last controller
1288                                 if (i == strObjectNames.length-1) {
1289                                         // ROUTING POLICY: implement basic policies to reject all other irrelevant traffics
1290                                         for(String s: commHan.getHosts()) {
1291                                                 setHostBasicPolicies(s);
1292                                         }
1293                                         // We retain all the basic policies for router,
1294                                         // but we delete the initial allowance policies for internal all TCP and UDP communications
1295                                         setRouterBasicPolicies(STR_ROUTER_ADD);
1296                                 }
1297                                 // Close access to policy files and deploy policies
1298                                 routerConfig.close();
1299                                 // Deploy the policy
1300                                 HashSet<String> setAddresses = new HashSet<String>(commHan.getHosts());
1301                                 setAddresses.add(strIoTMasterHostAdd);
1302                                 createPolicyThreads(STR_ROUTER_ADD, setAddresses);
1303
1304                                 // PROFILING
1305                                 result = System.currentTimeMillis()-start;
1306                                 System.out.println("\n\n ==> Time needed to send policy files and deploy them : " + result + "\n\n");
1307
1308                                 // PROFILING
1309                                 start = System.currentTimeMillis();
1310
1311                                 // Separating object creations and Set/Relation initializations
1312                                 createControllerObjects();
1313
1314                                 // PROFILING
1315                                 result = System.currentTimeMillis()-start;
1316                                 System.out.println("\n\n ==> Time needed to instantiate objects: " + result + "\n\n");
1317                                 // PROFILING
1318                                 start = System.currentTimeMillis();
1319
1320                                 // Sets and relations initializations
1321                                 initializeSetsAndRelations(inStream, outStream);
1322
1323                                 // PROFILING
1324                                 result = System.currentTimeMillis()-start;
1325                                 System.out.println("\n\n ==> Time needed to initialize sets and relations: " + result + "\n\n");
1326
1327                                 // == COMMUNICATION WITH IOTSLAVE CONTROLLER TO EXECUTE INIT METHOD
1328                                 commMasterToSlave(new MessageSimple(IoTCommCode.INVOKE_INIT_METHOD),
1329                                         "Invoke init() method!", inStream, outStream);
1330                                 // == COMMUNICATION WITH IOTSLAVE CONTROLLER TO END PROCESS
1331                                 outStream.writeObject(new MessageSimple(IoTCommCode.END_SESSION));
1332                                 outStream.close();
1333                                 inStream.close();
1334                                 socket.close();
1335                                 serverSocket.close();
1336                                 commHan.printLists();
1337                                 lbIoT.printHostInfo();
1338                         }
1339
1340                 } catch (IOException          |
1341                                  InterruptedException |
1342                                  ClassNotFoundException ex) {
1343                         System.out.println("IoTMaster: Exception: "
1344                                 + ex.getMessage());
1345                         ex.printStackTrace();
1346                 }
1347         }
1348
1349         public static void main(String args[]) {
1350
1351                 // Detect the available controller/device classes
1352                 // Input args[] should be used to list the controllers/devices
1353                 // e.g. java IoTMaster AcmeProximity AcmeThermostat AcmeVentController
1354                 IoTMaster iotMaster = new IoTMaster(args);
1355                 // Read config file
1356                 iotMaster.parseIoTMasterConfigFile();
1357                 // Initialize CommunicationHandler, LoadBalancer, and RouterConfig
1358                 iotMaster.initLiveDataStructure();
1359                 // Create objects
1360                 iotMaster.createObjects();
1361         }
1362 }