benchmarks/drivers/Java/EspAlarm/EspAlarm.java

   1 package iotcode.EspAlarm;
   2
   3 // Standard Java Packages
   4 import java.io.*;
   5 import java.net.*;
   6 import java.util.concurrent.Semaphore;
   7 import java.util.concurrent.atomic.AtomicBoolean;
   8 import java.security.InvalidParameterException;
   9 import java.util.Date;
  10 import java.util.Iterator;
  11 import java.nio.charset.StandardCharsets;
  12 import java.util.List;
  13 import java.util.ArrayList;
  14
  15 // IoT Packages
  16 import iotruntime.IoTUDP;
  17 import iotruntime.slave.IoTDeviceAddress;
  18 import iotruntime.slave.IoTSet;
  19 import iotcode.interfaces.ZoneState;
  20 import iotcode.interfaces.Alarm;
  21
  22 //import iotchecker.qual.*;
  23 import iotcode.annotation.*;
  24
  25 /** Class EspAlarm for the ESP8266 plrg Alarm.
  26  *
  27  * @author      Ali Younis <ayounis @ uci.edu>, Rahmadi Trimananda <rtrimana @ uci.edu>
  28  * @version     1.0
  29  * @since       2016-12-21
  30  */
  31
  32 public class EspAlarm implements Alarm {
  33
  34         /*******************************************************************************************************************************************
  35         **
  36         **  Variables
  37         **
  38         *******************************************************************************************************************************************/
  39
  40         private IoTUDP communicationSockect;
  41         private Semaphore socketMutex = new Semaphore(1);
  42         private AtomicBoolean sendSocketFlag = new AtomicBoolean(false);
  43         private AtomicBoolean doingRead = new AtomicBoolean(false);
  44         private AtomicBoolean didInit = new AtomicBoolean(false);
  45         private Semaphore settingZone = new Semaphore(1);
  46
  47         /*******************************************************************************************************************************************
  48         **
  49         **  Threads
  50         **
  51         *******************************************************************************************************************************************/
  52
  53         // Main worker thread will do the receive loop
  54         Thread workerThread = null;
  55
  56
  57         /*******************************************************************************************************************************************
  58         **
  59         **  IoT Sets and Relations
  60         **
  61         *******************************************************************************************************************************************/
  62
  63         // IoTSet of Device Addresses.
  64         // Will be filled with only 1 address.
  65         @config private IoTSet<IoTDeviceAddress> alm_Addresses;
  66
  67         /*public EspSprinkler(IoTUDP _udp) {
  68                 communicationSockect = _udp;
  69         }*/
  70
  71         public EspAlarm() {
  72                 communicationSockect = null;
  73         }
  74
  75
  76         /*******************************************************************************************************************************************
  77         **
  78         **  Interface Methods
  79         **
  80         *******************************************************************************************************************************************/
  81
  82         /** Method to set the state of a specified zone. Interface implementation.
  83          *
  84          *   @param _zone [int]             : zone number to set.
  85          *   @param _onOff [boolean]        : the state to set the zone to, on or off.
  86          *   @param _onDurationSeconds [int]: the duration to set the state on to, if -1 then infinite.
  87          *
  88          *   @return [void] None.
  89          */
  90         public void setZone(int _zone, boolean _onOff, int _onDurationSeconds) {
  91
  92                 try {
  93                         settingZone.acquire();
  94                         String sendString = "SET,";
  95                         sendString += Integer.toString(_zone);
  96                         sendString += ", ";
  97
  98                         if (_onOff) {
  99                                 sendString += "1";
 100                         } else {
 101                                 sendString += "0";
 102                         }
 103                         sendString += ", ";
 104                         sendString += Integer.toString(_onDurationSeconds);
 105
 106                         sendPacket(sendString.getBytes(StandardCharsets.UTF_8));
 107                 } catch (Exception e) {
 108                         e.printStackTrace();
 109                 }
 110                 settingZone.release();
 111         }
 112
 113
 114         /** Method to get the current state of all the zones. Interface implementation.
 115          *
 116          *   @param None.
 117          *
 118          *   @return [List<ZoneState>] list of the states for the zones.
 119          */
 120         public List<ZoneState> getZoneStates() {
 121                 doingRead.set(true);
 122                 sendGetInformation();
 123
 124                 try {
 125                         Thread.sleep(100);
 126                 } catch (Exception e) {
 127                         e.printStackTrace();
 128                 }
 129
 130                 int loopCount = 0;
 131                 while (true) {
 132                         // Communication resource is busy so try again later
 133                         if (sendSocketFlag.get()) {
 134                                 continue;
 135                         }
 136
 137                         try {
 138                                 socketMutex.acquire();
 139                         } catch (InterruptedException e) {
 140                         }
 141
 142                         byte[] dat = null;
 143                         try {
 144                                 dat = communicationSockect.recieveData(1024);
 145                         } catch (java.net.SocketTimeoutException e) {
 146                                 // Timeout occurred
 147
 148                         } catch (IOException e) {
 149                                 // Problem but might be able to recover??
 150                                 e.printStackTrace();
 151
 152                         }
 153
 154                         // Never forget to release!
 155                         socketMutex.release();
 156
 157                         // A packed arrived
 158                         if (dat != null) {
 159                                 doingRead.set(false);
 160                                 return parseGetResponse(dat);
 161
 162                                 // return new ArrayList<ZoneState>();
 163                         } else {
 164                                 try {
 165                                         Thread.sleep(100);
 166                                 } catch (Exception e) {
 167                                         e.printStackTrace();
 168                                 }
 169                                 loopCount++;
 170
 171                                 if (loopCount > 3) {
 172                                         sendGetInformation();
 173                                         loopCount = 0;
 174                                 }
 175                         }
 176                 }
 177         }
 178
 179
 180         /** Method to get the number of zones this sprinkler can control. Interface implementation.
 181          *
 182          *   @param None.
 183          *
 184          *   @return [int] number of zones that can be controlled.
 185          */
 186         public int getNumberOfZones() {
 187                 return 9;
 188         }
 189
 190
 191         /** Method to get whether or not this sprinkler can control durations. Interface implementation.
 192          *
 193          *   @param None.
 194          *
 195          *   @return [boolean] boolean if this sprinkler can do durations.
 196          */
 197         public boolean doesHaveZoneTimers() {
 198                 return true;
 199         }
 200
 201
 202         /** Method to initialize the sprinkler. Interface implementation.
 203          *
 204          *   @param None.
 205          *
 206          *   @return [void] None.
 207          */
 208         public void init() {
 209
 210                 if (didInit.compareAndSet(false, true) == false) {
 211                         return; // already init
 212                 }
 213
 214                 try {
 215                         Iterator itr = alm_Addresses.iterator();
 216                         IoTDeviceAddress deviceAddress = (IoTDeviceAddress)itr.next();
 217                         System.out.println("Address: " + deviceAddress.getCompleteAddress());
 218
 219                         // Create the communication channel
 220                         communicationSockect = new IoTUDP(deviceAddress);
 221                 } catch (Exception e) {
 222                         e.printStackTrace();
 223                 }
 224
 225
 226                 // Launch the worker function in a separate thread.
 227                 workerThread = new Thread(new Runnable() {
 228                         public void run() {
 229                                 workerFunction();
 230                         }
 231                 });
 232                 workerThread.start();
 233         }
 234
 235
 236         /*******************************************************************************************************************************************
 237         **
 238         **  Private Handlers
 239         **
 240         *******************************************************************************************************************************************/
 241
 242         /** Method to send the get information udp packet to get the latest sprinkler state.
 243          *
 244          *   @param None.
 245          *
 246          *   @return [void] None.
 247          */
 248         public void sendGetInformation() {
 249                 String sendString = "GET";
 250                 sendPacket(sendString.getBytes(StandardCharsets.UTF_8));
 251         }
 252
 253
 254         /** Method to parse the UDP packet data into a meaningful representation.
 255          *
 256          *   @param _packetData [byte[]] raw packet data from the udp packet.
 257          *
 258          *   @return [List<ZoneState>] Parsed zone data.
 259          */
 260         private List<ZoneState> parseGetResponse(byte[] _packetData) {
 261                 String recString = new String(_packetData);
 262                 List<ZoneState> retStates = new ArrayList<ZoneState>();
 263
 264                 String[] lines = recString.split("\n");
 265
 266                 for (int i = 0; i < 9; i++) {
 267                         String[] splitSting = lines[i].split(",");
 268
 269                         int zoneNum = Integer.parseInt(splitSting[0].trim());
 270                         int onOffInt = Integer.parseInt(splitSting[1].trim());
 271                         boolean onOff = onOffInt != 0;
 272                         int duration = Integer.parseInt(splitSting[2].trim());
 273
 274                         //ZoneState zTmp = new ZoneState(zoneNum, onOff, duration);
 275                         ZoneState zTmp = new ZoneState();
 276                         zTmp.zoneNumber = zoneNum;
 277                         zTmp.onOffState = onOff;
 278                         zTmp.duration = duration;
 279                         retStates.add(zTmp);
 280                 }
 281
 282                 return retStates;
 283         }
 284
 285
 286         /** Method to parse the UDP packet data into a meaningful representation.
 287          *
 288          *   @param _packetData [byte[]] bytes to send over the udp channel.
 289          *
 290          *   @return [void] None.
 291          */
 292         private void sendPacket(byte[] _packetData) {
 293                 // System.out.println("About to send");
 294                 sendSocketFlag.set(true);
 295
 296                 try {
 297                         socketMutex.acquire();
 298                 } catch (InterruptedException e) {
 299                         System.out.println("mutex Error");
 300                 }
 301
 302                 try {
 303                         communicationSockect.sendData(_packetData);
 304
 305                 } catch (IOException e) {
 306                         System.out.println("Socket Send Error");
 307                 }
 308
 309                 sendSocketFlag.set(false);
 310                 socketMutex.release();
 311         }
 312
 313
 314         /** Method to constantly flush the udp socket expect when we wish to read the incoming data.
 315          *
 316          *   @param None.
 317          *
 318          *   @return [void] None.
 319          */
 320         private void workerFunction() {
 321                 try {
 322                         // Need timeout on receives since we are not sure if a packet will be available
 323                         // for processing so don't block waiting
 324                         communicationSockect.setSoTimeout(50);
 325                 } catch (IOException e) {
 326                 }
 327
 328
 329
 330                 while (true) {
 331
 332                         // Communication resource is busy so try again later
 333                         if (sendSocketFlag.get()) {
 334                                 continue;
 335                         }
 336
 337                         if (doingRead.get()) {
 338                                 continue;
 339                         }
 340
 341                         try {
 342                                 socketMutex.acquire();
 343                         } catch (InterruptedException e) {
 344                         }
 345
 346                         byte[] dat = null;
 347                         try {
 348                                 dat = communicationSockect.recieveData(1024);
 349                         } catch (java.net.SocketTimeoutException e) {
 350                                 // Timeout occurred
 351
 352                         } catch (IOException e) {
 353                                 // Problem but might be able to recover??
 354                                 e.printStackTrace();
 355
 356                         }
 357
 358                         // Never forget to release!
 359                         socketMutex.release();
 360
 361                         // Wait a bit as to not tie up system resources
 362                         try {
 363                                 Thread.sleep(100);
 364                         } catch (Exception e) {
 365
 366                         }
 367                 }
 368         }
 369
 370 }
 371
 372