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   1 /**
   2  * Copyright (c) 2010-2021 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.bigassfan.internal.handler;
  14
  15 import static org.openhab.binding.bigassfan.internal.BigAssFanBindingConstants.*;
  16
  17 import java.io.DataOutputStream;
  18 import java.io.IOException;
  19 import java.net.InetAddress;
  20 import java.net.InetSocketAddress;
  21 import java.net.NetworkInterface;
  22 import java.net.Socket;
  23 import java.net.SocketException;
  24 import java.net.UnknownHostException;
  25 import java.nio.BufferOverflowException;
  26 import java.nio.charset.StandardCharsets;
  27 import java.time.Instant;
  28 import java.time.ZoneId;
  29 import java.time.ZonedDateTime;
  30 import java.time.format.DateTimeParseException;
  31 import java.util.Arrays;
  32 import java.util.Collections;
  33 import java.util.HashMap;
  34 import java.util.Map;
  35 import java.util.NoSuchElementException;
  36 import java.util.Scanner;
  37 import java.util.concurrent.ScheduledExecutorService;
  38 import java.util.concurrent.ScheduledFuture;
  39 import java.util.concurrent.TimeUnit;
  40 import java.util.regex.Matcher;
  41 import java.util.regex.Pattern;
  42
  43 import org.openhab.binding.bigassfan.internal.BigAssFanConfig;
  44 import org.openhab.binding.bigassfan.internal.utils.BigAssFanConverter;
  45 import org.openhab.core.common.ThreadPoolManager;
  46 import org.openhab.core.library.types.DateTimeType;
  47 import org.openhab.core.library.types.OnOffType;
  48 import org.openhab.core.library.types.PercentType;
  49 import org.openhab.core.library.types.StringType;
  50 import org.openhab.core.thing.Channel;
  51 import org.openhab.core.thing.ChannelUID;
  52 import org.openhab.core.thing.Thing;
  53 import org.openhab.core.thing.ThingStatus;
  54 import org.openhab.core.thing.ThingStatusDetail;
  55 import org.openhab.core.thing.binding.BaseThingHandler;
  56 import org.openhab.core.types.Command;
  57 import org.openhab.core.types.RefreshType;
  58 import org.openhab.core.types.State;
  59 import org.slf4j.Logger;
  60 import org.slf4j.LoggerFactory;
  61
  62 /**
  63  * The {@link BigAssFanHandler} is responsible for handling commands, which are
  64  * sent to one of the channels.
  65  *
  66  * @author Mark Hilbush - Initial contribution
  67  */
  68 public class BigAssFanHandler extends BaseThingHandler {
  69     private final Logger logger = LoggerFactory.getLogger(BigAssFanHandler.class);
  70
  71     private static final StringType LIGHT_COLOR = new StringType("COLOR");
  72     private static final StringType LIGHT_PRESENT = new StringType("PRESENT");
  73
  74     private static final StringType OFF = new StringType("OFF");
  75     private static final StringType COOLING = new StringType("COOLING");
  76     private static final StringType HEATING = new StringType("HEATING");
  77
  78     private BigAssFanConfig config;
  79     private String label = null;
  80     private String ipAddress = null;
  81     private String macAddress = null;
  82
  83     private FanListener fanListener;
  84
  85     protected Map<String, State> fanStateMap = Collections.synchronizedMap(new HashMap<>());
  86
  87     public BigAssFanHandler(Thing thing, String ipv4Address) {
  88         super(thing);
  89         this.thing = thing;
  90
  91         logger.debug("Creating FanListener object for {}", thing.getUID());
  92         fanListener = new FanListener(ipv4Address);
  93     }
  94
  95     @Override
  96     public void initialize() {
  97         logger.debug("BigAssFanHandler for {} is initializing", thing.getUID());
  98
  99         config = getConfig().as(BigAssFanConfig.class);
 100         logger.debug("BigAssFanHandler config for {} is {}", thing.getUID(), config);
 101
 102         if (!config.isValid()) {
 103             logger.debug("BigAssFanHandler config of {} is invalid. Check configuration", thing.getUID());
 104             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR,
 105                     "Invalid BigAssFan config. Check configuration.");
 106             return;
 107         }
 108         label = config.getLabel();
 109         ipAddress = config.getIpAddress();
 110         macAddress = config.getMacAddress();
 111
 112         fanListener.startFanListener();
 113     }
 114
 115     @Override
 116     public void dispose() {
 117         logger.debug("BigAssFanHandler for {} is disposing", thing.getUID());
 118         fanListener.stopFanListener();
 119     }
 120
 121     @Override
 122     public void handleCommand(ChannelUID channelUID, Command command) {
 123         if (command instanceof RefreshType) {
 124             return;
 125         }
 126
 127         logger.debug("Handle command for {} on channel {}: {}", thing.getUID(), channelUID, command);
 128         if (channelUID.getId().equals(CHANNEL_FAN_POWER)) {
 129             handleFanPower(command);
 130         } else if (channelUID.getId().equals(CHANNEL_FAN_SPEED)) {
 131             handleFanSpeed(command);
 132         } else if (channelUID.getId().equals(CHANNEL_FAN_AUTO)) {
 133             handleFanAuto(command);
 134         } else if (channelUID.getId().equals(CHANNEL_FAN_WHOOSH)) {
 135             handleFanWhoosh(command);
 136         } else if (channelUID.getId().equals(CHANNEL_FAN_SMARTMODE)) {
 137             handleFanSmartmode(command);
 138         } else if (channelUID.getId().equals(CHANNEL_FAN_LEARN_MINSPEED)) {
 139             handleFanLearnSpeedMin(command);
 140         } else if (channelUID.getId().equals(CHANNEL_FAN_LEARN_MAXSPEED)) {
 141             handleFanLearnSpeedMax(command);
 142         } else if (channelUID.getId().equals(CHANNEL_FAN_SPEED_MIN)) {
 143             handleFanSpeedMin(command);
 144         } else if (channelUID.getId().equals(CHANNEL_FAN_SPEED_MAX)) {
 145             handleFanSpeedMax(command);
 146         } else if (channelUID.getId().equals(CHANNEL_FAN_WINTERMODE)) {
 147             handleFanWintermode(command);
 148         } else if (channelUID.getId().equals(CHANNEL_LIGHT_POWER)) {
 149             handleLightPower(command);
 150         } else if (channelUID.getId().equals(CHANNEL_LIGHT_LEVEL)) {
 151             handleLightLevel(command);
 152         } else if (channelUID.getId().equals(CHANNEL_LIGHT_HUE)) {
 153             handleLightHue(command);
 154         } else if (channelUID.getId().equals(CHANNEL_LIGHT_AUTO)) {
 155             handleLightAuto(command);
 156         } else if (channelUID.getId().equals(CHANNEL_LIGHT_SMARTER)) {
 157             handleLightSmarter(command);
 158         } else if (channelUID.getId().equals(CHANNEL_LIGHT_LEVEL_MIN)) {
 159             handleLightLevelMin(command);
 160         } else if (channelUID.getId().equals(CHANNEL_LIGHT_LEVEL_MAX)) {
 161             handleLightLevelMax(command);
 162         } else if (channelUID.getId().equals(CHANNEL_FAN_SLEEP)) {
 163             handleSleep(command);
 164         } else {
 165             logger.debug("Received command for {} on unknown channel {}", thing.getUID(), channelUID.getId());
 166         }
 167     }
 168
 169     private void handleFanPower(Command command) {
 170         logger.debug("Handling fan power command for {}: {}", thing.getUID(), command);
 171
 172         // <mac;FAN;PWR;ON|OFF>
 173         if (command instanceof OnOffType) {
 174             if (command.equals(OnOffType.OFF)) {
 175                 sendCommand(macAddress, ";FAN;PWR;OFF");
 176             } else if (command.equals(OnOffType.ON)) {
 177                 sendCommand(macAddress, ";FAN;PWR;ON");
 178             }
 179         }
 180     }
 181
 182     private void handleFanSpeed(Command command) {
 183         logger.debug("Handling fan speed command for {}: {}", thing.getUID(), command);
 184
 185         // <mac;FAN;SPD;SET;0..7>
 186         if (command instanceof PercentType) {
 187             sendCommand(macAddress, ";FAN;SPD;SET;".concat(BigAssFanConverter.percentToSpeed((PercentType) command)));
 188         }
 189     }
 190
 191     private void handleFanAuto(Command command) {
 192         logger.debug("Handling fan auto command {}", command);
 193
 194         // <mac;FAN;AUTO;ON|OFF>
 195         if (command instanceof OnOffType) {
 196             if (command.equals(OnOffType.OFF)) {
 197                 sendCommand(macAddress, ";FAN;AUTO;OFF");
 198             } else if (command.equals(OnOffType.ON)) {
 199                 sendCommand(macAddress, ";FAN;AUTO;ON");
 200             }
 201         }
 202     }
 203
 204     private void handleFanWhoosh(Command command) {
 205         logger.debug("Handling fan whoosh command {}", command);
 206
 207         // <mac;FAN;WHOOSH;ON|OFF>
 208         if (command instanceof OnOffType) {
 209             if (command.equals(OnOffType.OFF)) {
 210                 sendCommand(macAddress, ";FAN;WHOOSH;OFF");
 211             } else if (command.equals(OnOffType.ON)) {
 212                 sendCommand(macAddress, ";FAN;WHOOSH;ON");
 213             }
 214         }
 215     }
 216
 217     private void handleFanSmartmode(Command command) {
 218         logger.debug("Handling fan smartmode command {}", command);
 219
 220         // <mac;SMARTMODE;SET;OFF/COOLING/HEATING>
 221         if (command instanceof StringType) {
 222             if (command.equals(OFF)) {
 223                 sendCommand(macAddress, ";SMARTMODE;STATE;SET;OFF");
 224             } else if (command.equals(COOLING)) {
 225                 sendCommand(macAddress, ";SMARTMODE;STATE;SET;COOLING");
 226             } else if (command.equals(HEATING)) {
 227                 sendCommand(macAddress, ";SMARTMODE;STATE;SET;HEATING");
 228             } else {
 229                 logger.debug("Unknown fan smartmode command: {}", command);
 230             }
 231         }
 232     }
 233
 234     private void handleFanLearnSpeedMin(Command command) {
 235         logger.debug("Handling fan learn speed minimum command {}", command);
 236         // <mac;FAN;SPD;SET;MIN;0..7>
 237         if (command instanceof PercentType) {
 238             // Send min speed set command
 239             sendCommand(macAddress,
 240                     ";LEARN;MINSPEED;SET;".concat(BigAssFanConverter.percentToSpeed((PercentType) command)));
 241             fanStateMap.put(CHANNEL_FAN_LEARN_MINSPEED, (PercentType) command);
 242             // Don't let max be less than min
 243             adjustMaxSpeed((PercentType) command, CHANNEL_FAN_LEARN_MAXSPEED, ";LEARN;MAXSPEED;");
 244         }
 245     }
 246
 247     private void handleFanLearnSpeedMax(Command command) {
 248         logger.debug("Handling fan learn speed maximum command {}", command);
 249         // <mac;FAN;SPD;SET;MAX;0..7>
 250         if (command instanceof PercentType) {
 251             // Send max speed set command
 252             sendCommand(macAddress,
 253                     ";LEARN;MAXSPEED;SET;;".concat(BigAssFanConverter.percentToSpeed((PercentType) command)));
 254             fanStateMap.put(CHANNEL_FAN_LEARN_MAXSPEED, (PercentType) command);
 255             // Don't let min be greater than max
 256             adjustMinSpeed((PercentType) command, CHANNEL_FAN_LEARN_MINSPEED, ";LEARN;MINSPEED;");
 257         }
 258     }
 259
 260     private void handleFanSpeedMin(Command command) {
 261         logger.debug("Handling fan speed minimum command {}", command);
 262         // <mac;FAN;SPD;SET;MIN;0..7>
 263         if (command instanceof PercentType) {
 264             // Send min speed set command
 265             sendCommand(macAddress,
 266                     ";FAN;SPD;SET;MIN;".concat(BigAssFanConverter.percentToSpeed((PercentType) command)));
 267             fanStateMap.put(CHANNEL_FAN_SPEED_MIN, (PercentType) command);
 268             // Don't let max be less than min
 269             adjustMaxSpeed((PercentType) command, CHANNEL_FAN_SPEED_MAX, ";FAN;SPD;SET;MAX;");
 270         }
 271     }
 272
 273     private void handleFanSpeedMax(Command command) {
 274         logger.debug("Handling fan speed maximum command {}", command);
 275         // <mac;FAN;SPD;SET;MAX;0..7>
 276         if (command instanceof PercentType) {
 277             // Send max speed set command
 278             sendCommand(macAddress,
 279                     ";FAN;SPD;SET;MAX;".concat(BigAssFanConverter.percentToSpeed((PercentType) command)));
 280             fanStateMap.put(CHANNEL_FAN_SPEED_MAX, (PercentType) command);
 281             // Don't let min be greater than max
 282             adjustMinSpeed((PercentType) command, CHANNEL_FAN_SPEED_MIN, ";FAN;SPD;SET;MIN;");
 283         }
 284     }
 285
 286     private void handleFanWintermode(Command command) {
 287         logger.debug("Handling fan wintermode command {}", command);
 288
 289         // <mac;FAN;WINTERMODE;ON|OFF>
 290         if (command instanceof OnOffType) {
 291             if (command.equals(OnOffType.OFF)) {
 292                 sendCommand(macAddress, ";FAN;WINTERMODE;OFF");
 293             } else if (command.equals(OnOffType.ON)) {
 294                 sendCommand(macAddress, ";FAN;WINTERMODE;ON");
 295             }
 296         }
 297     }
 298
 299     private void handleSleep(Command command) {
 300         logger.debug("Handling fan sleep command {}", command);
 301
 302         // <mac;SLEEP;STATE;ON|OFF>
 303         if (command instanceof OnOffType) {
 304             if (command.equals(OnOffType.OFF)) {
 305                 sendCommand(macAddress, ";SLEEP;STATE;OFF");
 306             } else if (command.equals(OnOffType.ON)) {
 307                 sendCommand(macAddress, ";SLEEP;STATE;ON");
 308             }
 309         }
 310     }
 311
 312     private void adjustMaxSpeed(PercentType command, String channelId, String commandFragment) {
 313         int newMin = command.intValue();
 314         int currentMax = PercentType.ZERO.intValue();
 315         if (fanStateMap.get(channelId) != null) {
 316             currentMax = ((PercentType) fanStateMap.get(channelId)).intValue();
 317         }
 318         if (newMin > currentMax) {
 319             updateState(CHANNEL_FAN_SPEED_MAX, command);
 320             sendCommand(macAddress, commandFragment.concat(BigAssFanConverter.percentToSpeed(command)));
 321         }
 322     }
 323
 324     private void adjustMinSpeed(PercentType command, String channelId, String commandFragment) {
 325         int newMax = command.intValue();
 326         int currentMin = PercentType.HUNDRED.intValue();
 327         if (fanStateMap.get(channelId) != null) {
 328             currentMin = ((PercentType) fanStateMap.get(channelId)).intValue();
 329         }
 330         if (newMax < currentMin) {
 331             updateState(channelId, command);
 332             sendCommand(macAddress, commandFragment.concat(BigAssFanConverter.percentToSpeed(command)));
 333         }
 334     }
 335
 336     private void handleLightPower(Command command) {
 337         if (!isLightPresent()) {
 338             logger.debug("Fan does not have light installed for command {}", command);
 339             return;
 340         }
 341
 342         logger.debug("Handling light power command {}", command);
 343         // <mac;LIGHT;PWR;ON|OFF>
 344         if (command instanceof OnOffType) {
 345             if (command.equals(OnOffType.OFF)) {
 346                 sendCommand(macAddress, ";LIGHT;PWR;OFF");
 347             } else if (command.equals(OnOffType.ON)) {
 348                 sendCommand(macAddress, ";LIGHT;PWR;ON");
 349             }
 350         }
 351     }
 352
 353     private void handleLightLevel(Command command) {
 354         if (!isLightPresent()) {
 355             logger.debug("Fan does not have light installed for command {}", command);
 356             return;
 357         }
 358
 359         logger.debug("Handling light level command {}", command);
 360         // <mac;LIGHT;LEVEL;SET;0..16>
 361         if (command instanceof PercentType) {
 362             sendCommand(macAddress,
 363                     ";LIGHT;LEVEL;SET;".concat(BigAssFanConverter.percentToLevel((PercentType) command)));
 364         }
 365     }
 366
 367     private void handleLightHue(Command command) {
 368         if (!isLightPresent() || !isLightColor()) {
 369             logger.debug("Fan does not have light installed or does not support hue for command {}", command);
 370             return;
 371         }
 372
 373         logger.debug("Handling light hue command {}", command);
 374         // <mac;LIGHT;COLOR;TEMP;SET;2200..5000>
 375         if (command instanceof PercentType) {
 376             sendCommand(macAddress,
 377                     ";LIGHT;COLOR;TEMP;VALUE;SET;".concat(BigAssFanConverter.percentToHue((PercentType) command)));
 378         }
 379     }
 380
 381     private void handleLightAuto(Command command) {
 382         if (!isLightPresent()) {
 383             logger.debug("Fan does not have light installed for command {}", command);
 384             return;
 385         }
 386
 387         logger.debug("Handling light auto command {}", command);
 388         // <mac;LIGHT;AUTO;ON|OFF>
 389         if (command instanceof OnOffType) {
 390             if (command.equals(OnOffType.OFF)) {
 391                 sendCommand(macAddress, ";LIGHT;AUTO;OFF");
 392             } else if (command.equals(OnOffType.ON)) {
 393                 sendCommand(macAddress, ";LIGHT;AUTO;ON");
 394             }
 395         }
 396     }
 397
 398     private void handleLightSmarter(Command command) {
 399         if (!isLightPresent()) {
 400             logger.debug("Fan does not have light installed for command {}", command);
 401             return;
 402         }
 403
 404         logger.debug("Handling light smartmode command {}", command);
 405         // <mac;LIGHT;SMART;ON/OFF>
 406         if (command instanceof OnOffType) {
 407             if (command.equals(OnOffType.OFF)) {
 408                 sendCommand(macAddress, ";LIGHT;SMART;OFF");
 409             } else if (command.equals(OnOffType.ON)) {
 410                 sendCommand(macAddress, ";LIGHT;SMART;ON");
 411             }
 412         }
 413     }
 414
 415     private void handleLightLevelMin(Command command) {
 416         if (!isLightPresent()) {
 417             logger.debug("Fan does not have light installed for command {}", command);
 418             return;
 419         }
 420
 421         logger.debug("Handling light level minimum command {}", command);
 422         // <mac;LIGHT;LEVEL;MIN;0-16>
 423         if (command instanceof PercentType) {
 424             // Send min light level set command
 425             sendCommand(macAddress,
 426                     ";LIGHT;LEVEL;MIN;".concat(BigAssFanConverter.percentToLevel((PercentType) command)));
 427             // Don't let max be less than min
 428             adjustMaxLevel((PercentType) command);
 429         }
 430     }
 431
 432     private void handleLightLevelMax(Command command) {
 433         if (!isLightPresent()) {
 434             logger.debug("Fan does not have light installed for command {}", command);
 435             return;
 436         }
 437
 438         logger.debug("Handling light level maximum command {}", command);
 439         // <mac;LIGHT;LEVEL;MAX;0-16>
 440         if (command instanceof PercentType) {
 441             // Send max light level set command
 442             sendCommand(macAddress,
 443                     ";LIGHT;LEVEL;MAX;".concat(BigAssFanConverter.percentToLevel((PercentType) command)));
 444             // Don't let min be greater than max
 445             adjustMinLevel((PercentType) command);
 446         }
 447     }
 448
 449     private void adjustMaxLevel(PercentType command) {
 450         int newMin = command.intValue();
 451         int currentMax = PercentType.ZERO.intValue();
 452         if (fanStateMap.get(CHANNEL_LIGHT_LEVEL_MAX) != null) {
 453             currentMax = ((PercentType) fanStateMap.get(CHANNEL_LIGHT_LEVEL_MAX)).intValue();
 454         }
 455         if (newMin > currentMax) {
 456             updateState(CHANNEL_LIGHT_LEVEL_MAX, command);
 457             sendCommand(macAddress, ";LIGHT;LEVEL;MAX;".concat(BigAssFanConverter.percentToLevel(command)));
 458         }
 459     }
 460
 461     private void adjustMinLevel(PercentType command) {
 462         int newMax = command.intValue();
 463         int currentMin = PercentType.HUNDRED.intValue();
 464         if (fanStateMap.get(CHANNEL_LIGHT_LEVEL_MIN) != null) {
 465             currentMin = ((PercentType) fanStateMap.get(CHANNEL_LIGHT_LEVEL_MIN)).intValue();
 466         }
 467         if (newMax < currentMin) {
 468             updateState(CHANNEL_LIGHT_LEVEL_MIN, command);
 469             sendCommand(macAddress, ";LIGHT;LEVEL;MIN;".concat(BigAssFanConverter.percentToLevel(command)));
 470         }
 471     }
 472
 473     private boolean isLightPresent() {
 474         return fanStateMap.containsKey(CHANNEL_LIGHT_PRESENT)
 475                 && LIGHT_PRESENT.equals(fanStateMap.get(CHANNEL_LIGHT_PRESENT));
 476     }
 477
 478     private boolean isLightColor() {
 479         return fanStateMap.containsKey(CHANNEL_LIGHT_COLOR) && LIGHT_COLOR.equals(fanStateMap.get(CHANNEL_LIGHT_COLOR));
 480     }
 481
 482     /*
 483      * Send a command to the fan
 484      */
 485     private void sendCommand(String mac, String commandFragment) {
 486         if (fanListener == null) {
 487             logger.error("Unable to send message to {} because fanListener object is null!", thing.getUID());
 488             return;
 489         }
 490
 491         StringBuilder sb = new StringBuilder();
 492         sb.append("<").append(mac).append(commandFragment).append(">");
 493         String message = sb.toString();
 494         logger.trace("Sending message to {} at {}: {}", thing.getUID(), ipAddress, message);
 495         fanListener.send(message);
 496     }
 497
 498     private void updateChannel(String channelName, State state) {
 499         Channel channel = thing.getChannel(channelName);
 500         if (channel != null) {
 501             updateState(channel.getUID(), state);
 502         }
 503     }
 504
 505     /*
 506      * Manage the ONLINE/OFFLINE status of the thing
 507      */
 508     private void markOnline() {
 509         if (!isOnline()) {
 510             logger.debug("Changing status of {} from {}({}) to ONLINE", thing.getUID(), getStatus(), getDetail());
 511             updateStatus(ThingStatus.ONLINE);
 512         }
 513     }
 514
 515     private void markOffline() {
 516         if (isOnline()) {
 517             logger.debug("Changing status of {} from {}({}) to OFFLINE", thing.getUID(), getStatus(), getDetail());
 518             updateStatus(ThingStatus.OFFLINE);
 519         }
 520     }
 521
 522     private void markOfflineWithMessage(ThingStatusDetail statusDetail, String statusMessage) {
 523         // If it's offline with no detail or if it's not offline, mark it offline with detailed status
 524         if ((isOffline() && getDetail() == ThingStatusDetail.NONE) || !isOffline()) {
 525             logger.debug("Changing status of {} from {}({}) to OFFLINE({})", thing.getUID(), getStatus(), getDetail(),
 526                     statusDetail);
 527             updateStatus(ThingStatus.OFFLINE, statusDetail, statusMessage);
 528             return;
 529         }
 530     }
 531
 532     private boolean isOnline() {
 533         return thing.getStatus().equals(ThingStatus.ONLINE);
 534     }
 535
 536     private boolean isOffline() {
 537         return thing.getStatus().equals(ThingStatus.OFFLINE);
 538     }
 539
 540     private ThingStatus getStatus() {
 541         return thing.getStatus();
 542     }
 543
 544     private ThingStatusDetail getDetail() {
 545         return thing.getStatusInfo().getStatusDetail();
 546     }
 547
 548     /**
 549      * The {@link FanListener} is responsible for sending and receiving messages to a fan.
 550      *
 551      * @author Mark Hilbush - Initial contribution
 552      */
 553     public class FanListener {
 554         private final Logger logger = LoggerFactory.getLogger(FanListener.class);
 555
 556         // Our own thread pool for the long-running listener job
 557         private ScheduledExecutorService scheduledExecutorService = ThreadPoolManager
 558                 .getScheduledPool("bigassfanHandler" + "-" + thing.getUID());
 559         private ScheduledFuture<?> listenerJob;
 560
 561         private final long FAN_LISTENER_DELAY = 2L;
 562         private boolean terminate;
 563
 564         private final Pattern messagePattern = Pattern.compile("[(](.*)");
 565
 566         private ConnectionManager conn;
 567
 568         private Runnable fanListenerRunnable = () -> {
 569             try {
 570                 listener();
 571             } catch (RuntimeException e) {
 572                 logger.warn("FanListener for {} had unhandled exception: {}", thing.getUID(), e.getMessage(), e);
 573             }
 574         };
 575
 576         public FanListener(String ipv4Address) {
 577             conn = new ConnectionManager(ipv4Address);
 578         }
 579
 580         public void startFanListener() {
 581             conn.connect();
 582             conn.scheduleConnectionMonitorJob();
 583
 584             if (listenerJob == null) {
 585                 terminate = false;
 586                 logger.debug("Starting listener in {} sec for {} at {}", FAN_LISTENER_DELAY, thing.getUID(), ipAddress);
 587                 listenerJob = scheduledExecutorService.schedule(fanListenerRunnable, FAN_LISTENER_DELAY,
 588                         TimeUnit.SECONDS);
 589             }
 590         }
 591
 592         public void stopFanListener() {
 593             if (listenerJob != null) {
 594                 logger.debug("Stopping listener for {} at {}", thing.getUID(), ipAddress);
 595                 terminate = true;
 596                 listenerJob.cancel(true);
 597                 listenerJob = null;
 598             }
 599             conn.cancelConnectionMonitorJob();
 600             conn.disconnect();
 601         }
 602
 603         public void send(String command) {
 604             if (!conn.isConnected()) {
 605                 logger.debug("Unable to send message; no connection to {}. Trying to reconnect: {}", thing.getUID(),
 606                         command);
 607                 conn.connect();
 608                 if (!conn.isConnected()) {
 609                     return;
 610                 }
 611             }
 612
 613             logger.debug("Sending message to {} at {}: {}", thing.getUID(), ipAddress, command);
 614             byte[] buffer = command.getBytes(StandardCharsets.US_ASCII);
 615             try {
 616                 conn.write(buffer);
 617             } catch (IOException e) {
 618                 logger.warn("IO exception writing message to socket: {}", e.getMessage(), e);
 619                 conn.disconnect();
 620             }
 621         }
 622
 623         private void listener() {
 624             logger.debug("Fan listener thread is running for {} at {}", thing.getUID(), ipAddress);
 625
 626             while (!terminate) {
 627                 try {
 628                     // Wait for a message
 629                     processMessage(waitForMessage());
 630                 } catch (IOException ioe) {
 631                     logger.warn("Listener for {} got IO exception waiting for message: {}", thing.getUID(),
 632                             ioe.getMessage(), ioe);
 633                     break;
 634                 }
 635             }
 636             logger.debug("Fan listener thread is exiting for {} at {}", thing.getUID(), ipAddress);
 637         }
 638
 639         private String waitForMessage() throws IOException {
 640             if (!conn.isConnected()) {
 641                 if (logger.isTraceEnabled()) {
 642                     logger.trace("FanListener for {} can't receive message. No connection to fan", thing.getUID());
 643                 }
 644                 try {
 645                     Thread.sleep(500);
 646                 } catch (InterruptedException e) {
 647                 }
 648                 return null;
 649             }
 650             return readMessage();
 651         }
 652
 653         private String readMessage() {
 654             logger.trace("Waiting for message from {}  at {}", thing.getUID(), ipAddress);
 655             String message = conn.read();
 656             if (message != null) {
 657                 logger.trace("FanListener for {} received message of length {}: {}", thing.getUID(), message.length(),
 658                         message);
 659             }
 660             return message;
 661         }
 662
 663         private void processMessage(String incomingMessage) {
 664             if (incomingMessage == null || incomingMessage.isEmpty()) {
 665                 return;
 666             }
 667
 668             // Match on (msg)
 669             logger.debug("FanListener for {} received message from {}: {}", thing.getUID(), macAddress,
 670                     incomingMessage);
 671             Matcher matcher = messagePattern.matcher(incomingMessage);
 672             if (!matcher.find()) {
 673                 logger.debug("Unable to process message from {}, not in expected format: {}", thing.getUID(),
 674                         incomingMessage);
 675                 return;
 676             }
 677
 678             String message = matcher.group(1);
 679             String[] messageParts = message.split(";");
 680
 681             // Check to make sure it is my MAC address or my label
 682             if (!isMe(messageParts[0])) {
 683                 logger.trace("Message not for me ({}): {}", messageParts[0], macAddress);
 684                 return;
 685             }
 686
 687             logger.trace("Message is for me ({}): {}", messageParts[0], macAddress);
 688             String messageUpperCase = message.toUpperCase();
 689             if (messageUpperCase.contains(";FAN;PWR;")) {
 690                 updateFanPower(messageParts);
 691             } else if (messageUpperCase.contains(";FAN;SPD;ACTUAL;")) {
 692                 updateFanSpeed(messageParts);
 693             } else if (messageUpperCase.contains(";FAN;DIR;")) {
 694                 updateFanDirection(messageParts);
 695             } else if (messageUpperCase.contains(";FAN;AUTO;")) {
 696                 updateFanAuto(messageParts);
 697             } else if (messageUpperCase.contains(";FAN;WHOOSH;STATUS;")) {
 698                 updateFanWhoosh(messageParts);
 699             } else if (messageUpperCase.contains(";WINTERMODE;STATE;")) {
 700                 updateFanWintermode(messageParts);
 701             } else if (messageUpperCase.contains(";SMARTMODE;STATE;")) {
 702                 updateFanSmartmode(messageParts);
 703             } else if (messageUpperCase.contains(";FAN;SPD;MIN;")) {
 704                 updateFanSpeedMin(messageParts);
 705             } else if (messageUpperCase.contains(";FAN;SPD;MAX;")) {
 706                 updateFanSpeedMax(messageParts);
 707             } else if (messageUpperCase.contains(";SLEEP;STATE")) {
 708                 updateFanSleepMode(messageParts);
 709             } else if (messageUpperCase.contains(";LEARN;MINSPEED;")) {
 710                 updateFanLearnMinSpeed(messageParts);
 711             } else if (messageUpperCase.contains(";LEARN;MAXSPEED;")) {
 712                 updateFanLearnMaxSpeed(messageParts);
 713             } else if (messageUpperCase.contains(";LIGHT;PWR;")) {
 714                 updateLightPower(messageParts);
 715             } else if (messageUpperCase.contains(";LIGHT;LEVEL;ACTUAL;")) {
 716                 updateLightLevel(messageParts);
 717             } else if (messageUpperCase.contains(";LIGHT;COLOR;TEMP;VALUE;")) {
 718                 updateLightHue(messageParts);
 719             } else if (messageUpperCase.contains(";LIGHT;AUTO;")) {
 720                 updateLightAuto(messageParts);
 721             } else if (messageUpperCase.contains(";LIGHT;LEVEL;MIN;")) {
 722                 updateLightLevelMin(messageParts);
 723             } else if (messageUpperCase.contains(";LIGHT;LEVEL;MAX;")) {
 724                 updateLightLevelMax(messageParts);
 725             } else if (messageUpperCase.contains(";DEVICE;LIGHT;")) {
 726                 updateLightPresent(messageParts);
 727             } else if (messageUpperCase.contains(";SNSROCC;STATUS;")) {
 728                 updateMotion(messageParts);
 729             } else if (messageUpperCase.contains(";TIME;VALUE;")) {
 730                 updateTime(messageParts);
 731             } else {
 732                 logger.trace("Received unsupported message from {}: {}", thing.getUID(), message);
 733             }
 734         }
 735
 736         private boolean isMe(String idFromDevice) {
 737             // Check match on MAC address
 738             if (macAddress.equalsIgnoreCase(idFromDevice)) {
 739                 return true;
 740             }
 741             // Didn't match MAC address, check match for label
 742             if (label.equalsIgnoreCase(idFromDevice)) {
 743                 return true;
 744             }
 745             return false;
 746         }
 747
 748         private void updateFanPower(String[] messageParts) {
 749             if (messageParts.length != 4) {
 750                 if (logger.isDebugEnabled()) {
 751                     logger.debug("FAN;PWR has unexpected number of parameters: {}", Arrays.toString(messageParts));
 752                 }
 753                 return;
 754             }
 755             logger.debug("Process fan power update for {}: {}", thing.getUID(), messageParts[3]);
 756             OnOffType state = "ON".equalsIgnoreCase(messageParts[3]) ? OnOffType.ON : OnOffType.OFF;
 757             updateChannel(CHANNEL_FAN_POWER, state);
 758             fanStateMap.put(CHANNEL_FAN_POWER, state);
 759         }
 760
 761         private void updateFanSpeed(String[] messageParts) {
 762             if (messageParts.length != 5) {
 763                 logger.debug("FAN;SPD;ACTUAL has unexpected number of parameters: {}", Arrays.toString(messageParts));
 764                 return;
 765             }
 766             logger.debug("Process fan speed update for {}: {}", thing.getUID(), messageParts[4]);
 767             PercentType state = BigAssFanConverter.speedToPercent(messageParts[4]);
 768             updateChannel(CHANNEL_FAN_SPEED, state);
 769             fanStateMap.put(CHANNEL_FAN_SPEED, state);
 770         }
 771
 772         private void updateFanDirection(String[] messageParts) {
 773             if (messageParts.length != 4) {
 774                 logger.debug("FAN;DIR has unexpected number of parameters: {}", Arrays.toString(messageParts));
 775                 return;
 776             }
 777             logger.debug("Process fan direction update for {}: {}", thing.getUID(), messageParts[3]);
 778             StringType state = new StringType(messageParts[3]);
 779             updateChannel(CHANNEL_FAN_DIRECTION, state);
 780             fanStateMap.put(CHANNEL_FAN_DIRECTION, state);
 781         }
 782
 783         private void updateFanAuto(String[] messageParts) {
 784             if (messageParts.length != 4) {
 785                 logger.debug("FAN;AUTO has unexpected number of parameters: {}", Arrays.toString(messageParts));
 786                 return;
 787             }
 788             logger.debug("Process fan auto update for {}: {}", thing.getUID(), messageParts[3]);
 789             OnOffType state = "ON".equalsIgnoreCase(messageParts[3]) ? OnOffType.ON : OnOffType.OFF;
 790             updateChannel(CHANNEL_FAN_AUTO, state);
 791             fanStateMap.put(CHANNEL_FAN_AUTO, state);
 792         }
 793
 794         private void updateFanWhoosh(String[] messageParts) {
 795             if (messageParts.length != 5) {
 796                 logger.debug("FAN;WHOOSH has unexpected number of parameters: {}", Arrays.toString(messageParts));
 797                 return;
 798             }
 799             logger.debug("Process fan whoosh update for {}: {}", thing.getUID(), messageParts[4]);
 800             OnOffType state = "ON".equalsIgnoreCase(messageParts[4]) ? OnOffType.ON : OnOffType.OFF;
 801             updateChannel(CHANNEL_FAN_WHOOSH, state);
 802             fanStateMap.put(CHANNEL_FAN_WHOOSH, state);
 803         }
 804
 805         private void updateFanWintermode(String[] messageParts) {
 806             if (messageParts.length != 4) {
 807                 logger.debug("WINTERMODE;STATE has unexpected number of parameters: {}", Arrays.toString(messageParts));
 808                 return;
 809             }
 810             logger.debug("Process fan wintermode update for {}: {}", thing.getUID(), messageParts[3]);
 811             OnOffType state = "ON".equalsIgnoreCase(messageParts[3]) ? OnOffType.ON : OnOffType.OFF;
 812             updateChannel(CHANNEL_FAN_WINTERMODE, state);
 813             fanStateMap.put(CHANNEL_FAN_WINTERMODE, state);
 814         }
 815
 816         private void updateFanSmartmode(String[] messageParts) {
 817             if (messageParts.length != 4) {
 818                 logger.debug("Smartmode has unexpected number of parameters: {}", Arrays.toString(messageParts));
 819                 return;
 820             }
 821             logger.debug("Process fan smartmode update for {}: {}", thing.getUID(), messageParts[3]);
 822             StringType state = new StringType(messageParts[3]);
 823             updateChannel(CHANNEL_FAN_SMARTMODE, state);
 824             fanStateMap.put(CHANNEL_FAN_SMARTMODE, state);
 825         }
 826
 827         private void updateFanSpeedMin(String[] messageParts) {
 828             if (messageParts.length != 5) {
 829                 logger.debug("FanSpeedMin has unexpected number of parameters: {}", Arrays.toString(messageParts));
 830                 return;
 831             }
 832             logger.debug("Process fan min speed update for {}: {}", thing.getUID(), messageParts[4]);
 833             PercentType state = BigAssFanConverter.speedToPercent(messageParts[4]);
 834             updateChannel(CHANNEL_FAN_SPEED_MIN, state);
 835             fanStateMap.put(CHANNEL_FAN_SPEED_MIN, state);
 836         }
 837
 838         private void updateFanSpeedMax(String[] messageParts) {
 839             if (messageParts.length != 5) {
 840                 logger.debug("FanSpeedMax has unexpected number of parameters: {}", Arrays.toString(messageParts));
 841                 return;
 842             }
 843             logger.debug("Process fan speed max update for {}: {}", thing.getUID(), messageParts[4]);
 844             PercentType state = BigAssFanConverter.speedToPercent(messageParts[4]);
 845             updateChannel(CHANNEL_FAN_SPEED_MAX, state);
 846             fanStateMap.put(CHANNEL_FAN_SPEED_MAX, state);
 847         }
 848
 849         private void updateFanSleepMode(String[] messageParts) {
 850             if (messageParts.length != 4) {
 851                 logger.debug("SLEEP;STATE; has unexpected number of parameters: {}", Arrays.toString(messageParts));
 852                 return;
 853             }
 854             logger.debug("Process fan sleep mode for {}: {}", thing.getUID(), messageParts[3]);
 855             OnOffType state = "ON".equalsIgnoreCase(messageParts[3]) ? OnOffType.ON : OnOffType.OFF;
 856             updateChannel(CHANNEL_FAN_SLEEP, state);
 857             fanStateMap.put(CHANNEL_FAN_SLEEP, state);
 858         }
 859
 860         private void updateFanLearnMinSpeed(String[] messageParts) {
 861             if (messageParts.length != 4) {
 862                 logger.debug("FanLearnMaxSpeed has unexpected number of parameters: {}", Arrays.toString(messageParts));
 863                 return;
 864             }
 865             logger.debug("Process fan learn min speed update for {}: {}", thing.getUID(), messageParts[3]);
 866             PercentType state = BigAssFanConverter.speedToPercent(messageParts[3]);
 867             updateChannel(CHANNEL_FAN_LEARN_MINSPEED, state);
 868             fanStateMap.put(CHANNEL_FAN_LEARN_MINSPEED, state);
 869         }
 870
 871         private void updateFanLearnMaxSpeed(String[] messageParts) {
 872             if (messageParts.length != 4) {
 873                 logger.debug("FanLearnMaxSpeed has unexpected number of parameters: {}", Arrays.toString(messageParts));
 874                 return;
 875             }
 876             logger.debug("Process fan learn max speed update for {}: {}", thing.getUID(), messageParts[3]);
 877             PercentType state = BigAssFanConverter.speedToPercent(messageParts[3]);
 878             updateChannel(CHANNEL_FAN_LEARN_MAXSPEED, state);
 879             fanStateMap.put(CHANNEL_FAN_LEARN_MAXSPEED, state);
 880         }
 881
 882         private void updateLightPower(String[] messageParts) {
 883             if (messageParts.length != 4) {
 884                 logger.debug("LIGHT;PWR has unexpected number of parameters: {}", Arrays.toString(messageParts));
 885                 return;
 886             }
 887             logger.debug("Process light power update for {}: {}", thing.getUID(), messageParts[3]);
 888             OnOffType state = "ON".equalsIgnoreCase(messageParts[3]) ? OnOffType.ON : OnOffType.OFF;
 889             updateChannel(CHANNEL_LIGHT_POWER, state);
 890             fanStateMap.put(CHANNEL_LIGHT_POWER, state);
 891         }
 892
 893         private void updateLightLevel(String[] messageParts) {
 894             if (messageParts.length != 5) {
 895                 logger.debug("LIGHT;LEVEL has unexpected number of parameters: {}", Arrays.toString(messageParts));
 896                 return;
 897             }
 898             logger.debug("Process light level update for {}: {}", thing.getUID(), messageParts[4]);
 899             PercentType state = BigAssFanConverter.levelToPercent(messageParts[4]);
 900             updateChannel(CHANNEL_LIGHT_LEVEL, state);
 901             fanStateMap.put(CHANNEL_LIGHT_LEVEL, state);
 902         }
 903
 904         private void updateLightHue(String[] messageParts) {
 905             if (messageParts.length != 6) {
 906                 logger.debug("LIGHT;COLOR;TEMP;VALUE has unexpected number of parameters: {}",
 907                         Arrays.toString(messageParts));
 908                 return;
 909             }
 910             logger.debug("Process light hue update for {}: {}", thing.getUID(), messageParts[4]);
 911             PercentType state = BigAssFanConverter.hueToPercent(messageParts[5]);
 912             updateChannel(CHANNEL_LIGHT_HUE, state);
 913             fanStateMap.put(CHANNEL_LIGHT_HUE, state);
 914         }
 915
 916         private void updateLightAuto(String[] messageParts) {
 917             if (messageParts.length != 4) {
 918                 logger.debug("LIGHT;AUTO has unexpected number of parameters: {}", Arrays.toString(messageParts));
 919                 return;
 920             }
 921             logger.debug("Process light auto update for {}: {}", thing.getUID(), messageParts[3]);
 922             OnOffType state = "ON".equalsIgnoreCase(messageParts[3]) ? OnOffType.ON : OnOffType.OFF;
 923             updateChannel(CHANNEL_LIGHT_AUTO, state);
 924             fanStateMap.put(CHANNEL_LIGHT_AUTO, state);
 925         }
 926
 927         private void updateLightLevelMin(String[] messageParts) {
 928             if (messageParts.length != 5) {
 929                 logger.debug("LightLevelMin has unexpected number of parameters: {}", Arrays.toString(messageParts));
 930                 return;
 931             }
 932             logger.debug("Process light level min update for {}: {}", thing.getUID(), messageParts[4]);
 933             PercentType state = BigAssFanConverter.levelToPercent(messageParts[4]);
 934             updateChannel(CHANNEL_LIGHT_LEVEL_MIN, state);
 935             fanStateMap.put(CHANNEL_LIGHT_LEVEL_MIN, state);
 936         }
 937
 938         private void updateLightLevelMax(String[] messageParts) {
 939             if (messageParts.length != 5) {
 940                 logger.debug("LightLevelMax has unexpected number of parameters: {}", Arrays.toString(messageParts));
 941                 return;
 942             }
 943             logger.debug("Process light level max update for {}: {}", thing.getUID(), messageParts[4]);
 944             PercentType state = BigAssFanConverter.levelToPercent(messageParts[4]);
 945             updateChannel(CHANNEL_LIGHT_LEVEL_MAX, state);
 946             fanStateMap.put(CHANNEL_LIGHT_LEVEL_MAX, state);
 947         }
 948
 949         private void updateLightPresent(String[] messageParts) {
 950             if (messageParts.length < 4) {
 951                 logger.debug("LightPresent has unexpected number of parameters: {}", Arrays.toString(messageParts));
 952                 return;
 953             }
 954             logger.debug("Process light present update for {}: {}", thing.getUID(), messageParts[3]);
 955             StringType lightPresent = new StringType(messageParts[3]);
 956             updateChannel(CHANNEL_LIGHT_PRESENT, lightPresent);
 957             fanStateMap.put(CHANNEL_LIGHT_PRESENT, lightPresent);
 958             if (messageParts.length == 5) {
 959                 logger.debug("Light supports hue adjustment");
 960                 StringType lightColor = new StringType(messageParts[4]);
 961                 updateChannel(CHANNEL_LIGHT_COLOR, lightColor);
 962                 fanStateMap.put(CHANNEL_LIGHT_COLOR, lightColor);
 963             }
 964         }
 965
 966         private void updateMotion(String[] messageParts) {
 967             if (messageParts.length != 4) {
 968                 logger.debug("SNSROCC has unexpected number of parameters: {}", Arrays.toString(messageParts));
 969                 return;
 970             }
 971             logger.debug("Process motion sensor update for {}: {}", thing.getUID(), messageParts[3]);
 972             OnOffType state = "OCCUPIED".equalsIgnoreCase(messageParts[3]) ? OnOffType.ON : OnOffType.OFF;
 973             updateChannel(CHANNEL_MOTION, state);
 974             fanStateMap.put(CHANNEL_MOTION, state);
 975         }
 976
 977         private void updateTime(String[] messageParts) {
 978             if (messageParts.length != 4) {
 979                 logger.debug("TIME has unexpected number of parameters: {}", Arrays.toString(messageParts));
 980                 return;
 981             }
 982             logger.debug("Process time update for {}: {}", thing.getUID(), messageParts[3]);
 983             // (mac|name;TIME;VALUE;2017-03-26T14:06:27Z)
 984             try {
 985                 Instant instant = Instant.parse(messageParts[3]);
 986                 DateTimeType state = new DateTimeType(ZonedDateTime.ofInstant(instant, ZoneId.systemDefault()));
 987                 updateChannel(CHANNEL_TIME, state);
 988                 fanStateMap.put(CHANNEL_TIME, state);
 989             } catch (DateTimeParseException e) {
 990                 logger.info("Failed to parse date received from {}: {}", thing.getUID(), messageParts[3]);
 991             }
 992         }
 993     }
 994
 995     /*
 996      * The {@link ConnectionManager} class is responsible for managing the state of the TCP connection to the
 997      * fan.
 998      *
 999      * @author Mark Hilbush - Initial contribution
1000      */
1001     private class ConnectionManager {
1002         private Logger logger = LoggerFactory.getLogger(ConnectionManager.class);
1003
1004         private boolean deviceIsConnected;
1005
1006         private InetAddress ifAddress;
1007         private Socket fanSocket;
1008         private Scanner fanScanner;
1009         private DataOutputStream fanWriter;
1010         private final int SOCKET_CONNECT_TIMEOUT = 1500;
1011
1012         ScheduledFuture<?> connectionMonitorJob;
1013         private final long CONNECTION_MONITOR_FREQ = 120L;
1014         private final long CONNECTION_MONITOR_DELAY = 30L;
1015
1016         Runnable connectionMonitorRunnable = () -> {
1017             logger.trace("Performing connection check for {} at IP {}", thing.getUID(), ipAddress);
1018             checkConnection();
1019         };
1020
1021         public ConnectionManager(String ipv4Address) {
1022             deviceIsConnected = false;
1023             try {
1024                 ifAddress = InetAddress.getByName(ipv4Address);
1025                 logger.debug("Handler for {} using address {} on network interface {}", thing.getUID(),
1026                         ifAddress.getHostAddress(), NetworkInterface.getByInetAddress(ifAddress).getName());
1027             } catch (UnknownHostException e) {
1028                 logger.warn("Handler for {} got UnknownHostException getting local IPv4 net interface: {}",
1029                         thing.getUID(), e.getMessage(), e);
1030                 markOfflineWithMessage(ThingStatusDetail.OFFLINE.CONFIGURATION_ERROR, "No suitable network interface");
1031             } catch (SocketException e) {
1032                 logger.warn("Handler for {} got SocketException getting local IPv4 network interface: {}",
1033                         thing.getUID(), e.getMessage(), e);
1034                 markOfflineWithMessage(ThingStatusDetail.OFFLINE.CONFIGURATION_ERROR, "No suitable network interface");
1035             }
1036         }
1037
1038         /*
1039          * Connect to the command and serial port(s) on the device. The serial connections are established only for
1040          * devices that support serial.
1041          */
1042         protected synchronized void connect() {
1043             if (isConnected()) {
1044                 return;
1045             }
1046             logger.trace("Connecting to {} at {}", thing.getUID(), ipAddress);
1047
1048             // Open socket
1049             try {
1050                 fanSocket = new Socket();
1051                 fanSocket.bind(new InetSocketAddress(ifAddress, 0));
1052                 fanSocket.connect(new InetSocketAddress(ipAddress, BAF_PORT), SOCKET_CONNECT_TIMEOUT);
1053             } catch (IOException e) {
1054                 logger.debug("IOException connecting to  {} at {}: {}", thing.getUID(), ipAddress, e.getMessage());
1055                 markOfflineWithMessage(ThingStatusDetail.OFFLINE.COMMUNICATION_ERROR, e.getMessage());
1056                 disconnect();
1057                 return;
1058             }
1059
1060             // Create streams
1061             try {
1062                 fanWriter = new DataOutputStream(fanSocket.getOutputStream());
1063                 fanScanner = new Scanner(fanSocket.getInputStream());
1064                 fanScanner.useDelimiter("[)]");
1065             } catch (IOException e) {
1066                 logger.warn("IOException getting streams for {} at {}: {}", thing.getUID(), ipAddress, e.getMessage(),
1067                         e);
1068                 markOfflineWithMessage(ThingStatusDetail.OFFLINE.COMMUNICATION_ERROR, e.getMessage());
1069                 disconnect();
1070                 return;
1071             }
1072             logger.info("Connected to {} at {}", thing.getUID(), ipAddress);
1073             deviceIsConnected = true;
1074             markOnline();
1075         }
1076
1077         protected synchronized void disconnect() {
1078             if (!isConnected()) {
1079                 return;
1080             }
1081             logger.debug("Disconnecting from {} at {}", thing.getUID(), ipAddress);
1082
1083             try {
1084                 if (fanWriter != null) {
1085                     fanWriter.close();
1086                 }
1087                 if (fanScanner != null) {
1088                     fanScanner.close();
1089                 }
1090                 if (fanSocket != null) {
1091                     fanSocket.close();
1092                 }
1093             } catch (IOException e) {
1094                 logger.warn("IOException closing connection to {} at {}: {}", thing.getUID(), ipAddress, e.getMessage(),
1095                         e);
1096             }
1097             deviceIsConnected = false;
1098             fanSocket = null;
1099             fanScanner = null;
1100             fanWriter = null;
1101             markOffline();
1102         }
1103
1104         public String read() {
1105             if (fanScanner == null) {
1106                 logger.warn("Scanner for {} is null when trying to scan from {}!", thing.getUID(), ipAddress);
1107                 return null;
1108             }
1109
1110             String nextToken;
1111             try {
1112                 nextToken = fanScanner.next();
1113             } catch (NoSuchElementException e) {
1114                 logger.debug("Scanner for {} threw NoSuchElementException; stream possibly closed", thing.getUID());
1115                 // Force a reconnect to the device
1116                 disconnect();
1117                 nextToken = null;
1118             } catch (IllegalStateException e) {
1119                 logger.debug("Scanner for {} threw IllegalStateException; scanner possibly closed", thing.getUID());
1120                 nextToken = null;
1121             } catch (BufferOverflowException e) {
1122                 logger.debug("Scanner for {} threw BufferOverflowException", thing.getUID());
1123                 nextToken = null;
1124             }
1125             return nextToken;
1126         }
1127
1128         public void write(byte[] buffer) throws IOException {
1129             if (fanWriter == null) {
1130                 logger.warn("fanWriter for {} is null when trying to write to {}!!!", thing.getUID(), ipAddress);
1131                 return;
1132             }
1133             fanWriter.write(buffer, 0, buffer.length);
1134         }
1135
1136         private boolean isConnected() {
1137             return deviceIsConnected;
1138         }
1139
1140         /*
1141          * Periodically validate the command connection to the device by executing a getversion command.
1142          */
1143         private void scheduleConnectionMonitorJob() {
1144             if (connectionMonitorJob == null) {
1145                 logger.debug("Starting connection monitor job in {} seconds for {} at {}", CONNECTION_MONITOR_DELAY,
1146                         thing.getUID(), ipAddress);
1147                 connectionMonitorJob = scheduler.scheduleWithFixedDelay(connectionMonitorRunnable,
1148                         CONNECTION_MONITOR_DELAY, CONNECTION_MONITOR_FREQ, TimeUnit.SECONDS);
1149             }
1150         }
1151
1152         private void cancelConnectionMonitorJob() {
1153             if (connectionMonitorJob != null) {
1154                 logger.debug("Canceling connection monitor job for {} at {}", thing.getUID(), ipAddress);
1155                 connectionMonitorJob.cancel(true);
1156                 connectionMonitorJob = null;
1157             }
1158         }
1159
1160         private void checkConnection() {
1161             logger.trace("Checking status of connection for {} at {}", thing.getUID(), ipAddress);
1162             if (!isConnected()) {
1163                 logger.debug("Connection check FAILED for {} at {}", thing.getUID(), ipAddress);
1164                 connect();
1165             } else {
1166                 logger.debug("Connection check OK for {} at {}", thing.getUID(), ipAddress);
1167                 logger.debug("Requesting status update from {} at {}", thing.getUID(), ipAddress);
1168                 sendCommand(macAddress, ";GETALL");
1169                 sendCommand(macAddress, ";SNSROCC;STATUS;GET");
1170             }
1171         }
1172     }
1173 }