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   1 /**
   2  * Copyright (c) 2010-2020 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.systeminfo.internal.handler;
  14
  15 import static org.openhab.binding.systeminfo.internal.SysteminfoBindingConstants.*;
  16
  17 import java.math.BigDecimal;
  18 import java.util.HashSet;
  19 import java.util.Iterator;
  20 import java.util.List;
  21 import java.util.Map;
  22 import java.util.Set;
  23 import java.util.concurrent.ScheduledFuture;
  24 import java.util.concurrent.TimeUnit;
  25
  26 import org.eclipse.jdt.annotation.NonNullByDefault;
  27 import org.eclipse.jdt.annotation.Nullable;
  28 import org.openhab.binding.systeminfo.internal.model.DeviceNotFoundException;
  29 import org.openhab.binding.systeminfo.internal.model.SysteminfoInterface;
  30 import org.openhab.core.config.core.Configuration;
  31 import org.openhab.core.thing.Channel;
  32 import org.openhab.core.thing.ChannelUID;
  33 import org.openhab.core.thing.Thing;
  34 import org.openhab.core.thing.ThingStatus;
  35 import org.openhab.core.thing.ThingStatusDetail;
  36 import org.openhab.core.thing.binding.BaseThingHandler;
  37 import org.openhab.core.types.Command;
  38 import org.openhab.core.types.RefreshType;
  39 import org.openhab.core.types.State;
  40 import org.openhab.core.types.UnDefType;
  41 import org.slf4j.Logger;
  42 import org.slf4j.LoggerFactory;
  43
  44 /**
  45  * The {@link SysteminfoHandler} is responsible for providing real time information about the system
  46  * (CPU, Memory, Storage, Display and others).
  47  *
  48  * @author Svilen Valkanov - Initial contribution
  49  * @author Lyubomir Papzov - Separate the creation of the systeminfo object and its initialization
  50  * @author Wouter Born - Add null annotations
  51  */
  52 @NonNullByDefault
  53 public class SysteminfoHandler extends BaseThingHandler {
  54     /**
  55      * Refresh interval for {@link #highPriorityChannels} in seconds.
  56      */
  57     private @NonNullByDefault({}) BigDecimal refreshIntervalHighPriority;
  58
  59     /**
  60      * Refresh interval for {@link #mediumPriorityChannels} in seconds.
  61      */
  62     private @NonNullByDefault({}) BigDecimal refreshIntervalMediumPriority;
  63
  64     /**
  65      * Channels with priority configuration parameter set to High. They usually need frequent update of the state like
  66      * CPU load, or information about the free and used memory.
  67      * They are updated periodically at {@link #refreshIntervalHighPriority}.
  68      */
  69     private final Set<ChannelUID> highPriorityChannels = new HashSet<>();
  70
  71     /**
  72      * Channels with priority configuration parameter set to Medium. These channels usually need update of the
  73      * state not so oft like battery capacity, storage used and etc.
  74      * They are updated periodically at {@link #refreshIntervalMediumPriority}.
  75      */
  76     private final Set<ChannelUID> mediumPriorityChannels = new HashSet<>();
  77
  78     /**
  79      * Channels with priority configuration parameter set to Low. They represent static information or information
  80      * that is updated rare- e.g. CPU name, storage name and etc.
  81      * They are updated only at {@link #initialize()}.
  82      */
  83     private final Set<ChannelUID> lowPriorityChannels = new HashSet<>();
  84
  85     /**
  86      * Wait time for the creation of Item-Channel links in seconds. This delay is needed, because the Item-Channel
  87      * links have to be created before the thing state is updated, otherwise item state will not be updated.
  88      */
  89     public static final int WAIT_TIME_CHANNEL_ITEM_LINK_INIT = 1;
  90
  91     private SysteminfoInterface systeminfo;
  92
  93     private @Nullable ScheduledFuture<?> highPriorityTasks;
  94     private @Nullable ScheduledFuture<?> mediumPriorityTasks;
  95
  96     private Logger logger = LoggerFactory.getLogger(SysteminfoHandler.class);
  97
  98     public SysteminfoHandler(Thing thing, @Nullable SysteminfoInterface systeminfo) {
  99         super(thing);
 100         if (systeminfo != null) {
 101             this.systeminfo = systeminfo;
 102         } else {
 103             throw new IllegalArgumentException("No systeminfo service was provided");
 104         }
 105     }
 106
 107     @Override
 108     public void initialize() {
 109         logger.debug("Start initializing!");
 110
 111         if (instantiateSysteminfoLibrary() && isConfigurationValid() && updateProperties()) {
 112             groupChannelsByPriority();
 113             scheduleUpdates();
 114             logger.debug("Thing is successfully initialized!");
 115             updateStatus(ThingStatus.ONLINE);
 116         } else {
 117             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.HANDLER_INITIALIZING_ERROR,
 118                     "Thing cannot be initialized!");
 119         }
 120     }
 121
 122     private boolean instantiateSysteminfoLibrary() {
 123         try {
 124             systeminfo.initializeSysteminfo();
 125             logger.debug("Systeminfo implementation is instantiated!");
 126             return true;
 127         } catch (Exception e) {
 128             logger.warn("Cannot instantiate Systeminfo object!", e);
 129             return false;
 130         }
 131     }
 132
 133     private boolean isConfigurationValid() {
 134         logger.debug("Start reading Thing configuration.");
 135         try {
 136             refreshIntervalMediumPriority = (BigDecimal) this.thing.getConfiguration()
 137                     .get(MEDIUM_PRIORITY_REFRESH_TIME);
 138             refreshIntervalHighPriority = (BigDecimal) this.thing.getConfiguration().get(HIGH_PRIORITY_REFRESH_TIME);
 139
 140             if (refreshIntervalHighPriority.intValue() <= 0 || refreshIntervalMediumPriority.intValue() <= 0) {
 141                 throw new IllegalArgumentException("Refresh time must be positive number!");
 142             }
 143             logger.debug("Refresh time for medium priority channels set to {} s", refreshIntervalMediumPriority);
 144             logger.debug("Refresh time for high priority channels set to {} s", refreshIntervalHighPriority);
 145             return true;
 146         } catch (IllegalArgumentException e) {
 147             logger.warn("Refresh time value is invalid! Please change the thing configuration!");
 148             return false;
 149         } catch (ClassCastException e) {
 150             logger.debug("Channel configuration cannot be read!");
 151             return false;
 152         }
 153     }
 154
 155     private boolean updateProperties() {
 156         Map<String, String> properties = editProperties();
 157         try {
 158             properties.put(PROPERTY_CPU_LOGICAL_CORES, systeminfo.getCpuLogicalCores().toString());
 159             properties.put(PROPERTY_CPU_PHYSICAL_CORES, systeminfo.getCpuPhysicalCores().toString());
 160             properties.put(PROPERTY_OS_FAMILY, systeminfo.getOsFamily().toString());
 161             properties.put(PROPERTY_OS_MANUFACTURER, systeminfo.getOsManufacturer().toString());
 162             properties.put(PROPERTY_OS_VERSION, systeminfo.getOsVersion().toString());
 163             updateProperties(properties);
 164             logger.debug("Properties updated!");
 165             return true;
 166         } catch (Exception e) {
 167             logger.debug("Cannot get system properties! Please try to restart the binding.", e);
 168             return false;
 169         }
 170     }
 171
 172     private void groupChannelsByPriority() {
 173         logger.trace("Grouping channels by priority.");
 174         List<Channel> channels = this.thing.getChannels();
 175
 176         for (Channel channel : channels) {
 177             Configuration properties = channel.getConfiguration();
 178             String priority = (String) properties.get(PRIOIRITY_PARAM);
 179             if (priority == null) {
 180                 logger.debug("Channel with UID {} will not be updated. The channel has no priority set !",
 181                         channel.getUID());
 182                 break;
 183             }
 184             switch (priority) {
 185                 case "High":
 186                     highPriorityChannels.add(channel.getUID());
 187                     break;
 188                 case "Medium":
 189                     mediumPriorityChannels.add(channel.getUID());
 190                     break;
 191                 case "Low":
 192                     lowPriorityChannels.add(channel.getUID());
 193                     break;
 194                 default:
 195                     logger.debug("Invalid priority configuration parameter. Channel will not be updated!");
 196             }
 197         }
 198     }
 199
 200     private void changeChannelPriority(ChannelUID channelUID, String priority) {
 201         switch (priority) {
 202             case "High":
 203                 mediumPriorityChannels.remove(channelUID);
 204                 lowPriorityChannels.remove(channelUID);
 205                 highPriorityChannels.add(channelUID);
 206                 break;
 207             case "Medium":
 208                 lowPriorityChannels.remove(channelUID);
 209                 highPriorityChannels.remove(channelUID);
 210                 mediumPriorityChannels.add(channelUID);
 211                 break;
 212             case "Low":
 213                 highPriorityChannels.remove(channelUID);
 214                 mediumPriorityChannels.remove(channelUID);
 215                 lowPriorityChannels.add(channelUID);
 216                 break;
 217             default:
 218                 logger.debug("Invalid priority configuration parameter. Channel will not be updated!");
 219         }
 220     }
 221
 222     private void scheduleUpdates() {
 223         logger.debug("Schedule high priority tasks at fixed rate {} s.", refreshIntervalHighPriority);
 224         highPriorityTasks = scheduler.scheduleWithFixedDelay(() -> {
 225             publishData(highPriorityChannels);
 226         }, WAIT_TIME_CHANNEL_ITEM_LINK_INIT, refreshIntervalHighPriority.intValue(), TimeUnit.SECONDS);
 227
 228         logger.debug("Schedule medium priority tasks at fixed rate {} s.", refreshIntervalMediumPriority);
 229         mediumPriorityTasks = scheduler.scheduleWithFixedDelay(() -> {
 230             publishData(mediumPriorityChannels);
 231         }, WAIT_TIME_CHANNEL_ITEM_LINK_INIT, refreshIntervalMediumPriority.intValue(), TimeUnit.SECONDS);
 232
 233         logger.debug("Schedule one time update for low priority tasks.");
 234         scheduler.schedule(() -> {
 235             publishData(lowPriorityChannels);
 236         }, WAIT_TIME_CHANNEL_ITEM_LINK_INIT, TimeUnit.SECONDS);
 237     }
 238
 239     private void publishData(Set<ChannelUID> channels) {
 240         Iterator<ChannelUID> iter = channels.iterator();
 241         while (iter.hasNext()) {
 242             ChannelUID channeUID = iter.next();
 243             if (isLinked(channeUID.getId())) {
 244                 publishDataForChannel(channeUID);
 245             }
 246         }
 247     }
 248
 249     private void publishDataForChannel(ChannelUID channelUID) {
 250         State state = getInfoForChannel(channelUID);
 251         String channelID = channelUID.getId();
 252         updateState(channelID, state);
 253     }
 254
 255     public Set<ChannelUID> getHighPriorityChannels() {
 256         return highPriorityChannels;
 257     }
 258
 259     public Set<ChannelUID> getMediumPriorityChannels() {
 260         return mediumPriorityChannels;
 261     }
 262
 263     public Set<ChannelUID> getLowPriorityChannels() {
 264         return lowPriorityChannels;
 265     }
 266
 267     /**
 268      * This method gets the information for specific channel through the {@link SysteminfoInterface}. It uses the
 269      * channel ID to call the correct method from the {@link SysteminfoInterface} with deviceIndex parameter (in case of
 270      * multiple devices, for reference see {@link #getDeviceIndex(String)}})
 271      *
 272      * @param channelUID the UID of the channel
 273      * @return State object or null, if there is no information for the device with this index
 274      */
 275     private State getInfoForChannel(ChannelUID channelUID) {
 276         State state = null;
 277
 278         String channelID = channelUID.getId();
 279         String channelIDWithoutGroup = channelUID.getIdWithoutGroup();
 280         String channelGroupID = channelUID.getGroupId();
 281
 282         int deviceIndex = getDeviceIndex(channelUID);
 283
 284         // The channelGroup may contain deviceIndex. It must be deleted from the channelID, because otherwise the
 285         // switch will not find the correct method below.
 286         // All digits are deleted from the ID
 287         if (channelGroupID != null) {
 288             channelID = channelGroupID.replaceAll("\\d+", "") + "#" + channelIDWithoutGroup;
 289         }
 290
 291         try {
 292             switch (channelID) {
 293                 case CHANNEL_DISPLAY_INFORMATION:
 294                     state = systeminfo.getDisplayInformation(deviceIndex);
 295                     break;
 296                 case CHANNEL_BATTERY_NAME:
 297                     state = systeminfo.getBatteryName(deviceIndex);
 298                     break;
 299                 case CHANNEL_BATTERY_REMAINING_CAPACITY:
 300                     state = systeminfo.getBatteryRemainingCapacity(deviceIndex);
 301                     break;
 302                 case CHANNEL_BATTERY_REMAINING_TIME:
 303                     state = systeminfo.getBatteryRemainingTime(deviceIndex);
 304                     break;
 305                 case CHANNEL_SENSORS_CPU_TEMPERATURE:
 306                     state = systeminfo.getSensorsCpuTemperature();
 307                     break;
 308                 case CHANNEL_SENOSRS_CPU_VOLTAGE:
 309                     state = systeminfo.getSensorsCpuVoltage();
 310                     break;
 311                 case CHANNEL_SENSORS_FAN_SPEED:
 312                     state = systeminfo.getSensorsFanSpeed(deviceIndex);
 313                     break;
 314                 case CHANNEL_CPU_LOAD_1:
 315                     state = systeminfo.getCpuLoad1();
 316                     break;
 317                 case CHANNEL_CPU_LOAD_5:
 318                     state = systeminfo.getCpuLoad5();
 319                     break;
 320                 case CHANNEL_CPU_LOAD_15:
 321                     state = systeminfo.getCpuLoad15();
 322                     break;
 323                 case CHANNEL_CPU_UPTIME:
 324                     state = systeminfo.getCpuUptime();
 325                     break;
 326                 case CHANNEL_CPU_THREADS:
 327                     state = systeminfo.getCpuThreads();
 328                     break;
 329                 case CHANNEL_CPU_DESCRIPTION:
 330                     state = systeminfo.getCpuDescription();
 331                     break;
 332                 case CHANNEL_CPU_NAME:
 333                     state = systeminfo.getCpuName();
 334                     break;
 335                 case CHANNEL_MEMORY_AVAILABLE:
 336                     state = systeminfo.getMemoryAvailable();
 337                     break;
 338                 case CHANNEL_MEMORY_USED:
 339                     state = systeminfo.getMemoryUsed();
 340                     break;
 341                 case CHANNEL_MEMORY_TOTAL:
 342                     state = systeminfo.getMemoryTotal();
 343                     break;
 344                 case CHANNEL_MEMORY_AVAILABLE_PERCENT:
 345                     state = systeminfo.getMemoryAvailablePercent();
 346                     break;
 347                 case CHANNEL_MEMORY_USED_PERCENT:
 348                     state = systeminfo.getMemoryUsedPercent();
 349                     break;
 350                 case CHANNEL_SWAP_AVAILABLE:
 351                     state = systeminfo.getSwapAvailable();
 352                     break;
 353                 case CHANNEL_SWAP_USED:
 354                     state = systeminfo.getSwapUsed();
 355                     break;
 356                 case CHANNEL_SWAP_TOTAL:
 357                     state = systeminfo.getSwapTotal();
 358                     break;
 359                 case CHANNEL_SWAP_AVAILABLE_PERCENT:
 360                     state = systeminfo.getSwapAvailablePercent();
 361                     break;
 362                 case CHANNEL_SWAP_USED_PERCENT:
 363                     state = systeminfo.getSwapUsedPercent();
 364                     break;
 365                 case CHANNEL_DRIVE_MODEL:
 366                     state = systeminfo.getDriveModel(deviceIndex);
 367                     break;
 368                 case CHANNEL_DRIVE_SERIAL:
 369                     state = systeminfo.getDriveSerialNumber(deviceIndex);
 370                     break;
 371                 case CHANNEL_DRIVE_NAME:
 372                     state = systeminfo.getDriveName(deviceIndex);
 373                     break;
 374                 case CHANNEL_STORAGE_NAME:
 375                     state = systeminfo.getStorageName(deviceIndex);
 376                     break;
 377                 case CHANNEL_STORAGE_DESCRIPTION:
 378                     state = systeminfo.getStorageDescription(deviceIndex);
 379                     break;
 380                 case CHANNEL_STORAGE_AVAILABLE:
 381                     state = systeminfo.getStorageAvailable(deviceIndex);
 382                     break;
 383                 case CHANNEL_STORAGE_USED:
 384                     state = systeminfo.getStorageUsed(deviceIndex);
 385                     break;
 386                 case CHANNEL_STORAGE_TOTAL:
 387                     state = systeminfo.getStorageTotal(deviceIndex);
 388                     break;
 389                 case CHANNEL_STORAGE_TYPE:
 390                     state = systeminfo.getStorageType(deviceIndex);
 391                     break;
 392                 case CHANNEL_STORAGE_AVAILABLE_PERCENT:
 393                     state = systeminfo.getStorageAvailablePercent(deviceIndex);
 394                     break;
 395                 case CHANNEL_STORAGE_USED_PERCENT:
 396                     state = systeminfo.getStorageUsedPercent(deviceIndex);
 397                     break;
 398                 case CHANNEL_NETWORK_IP:
 399                     state = systeminfo.getNetworkIp(deviceIndex);
 400                     break;
 401                 case CHANNEL_NETWORK_ADAPTER_NAME:
 402                     state = systeminfo.getNetworkDisplayName(deviceIndex);
 403                     break;
 404                 case CHANNEL_NETWORK_NAME:
 405                     state = systeminfo.getNetworkName(deviceIndex);
 406                     break;
 407                 case CHANNEL_NETWORK_MAC:
 408                     state = systeminfo.getNetworkMac(deviceIndex);
 409                     break;
 410                 case CHANNEL_NETWORK_DATA_SENT:
 411                     state = systeminfo.getNetworkDataSent(deviceIndex);
 412                     break;
 413                 case CHANNEL_NETWORK_DATA_RECEIVED:
 414                     state = systeminfo.getNetworkDataReceived(deviceIndex);
 415                     break;
 416                 case CHANNEL_NETWORK_PACKETS_RECEIVED:
 417                     state = systeminfo.getNetworkPacketsReceived(deviceIndex);
 418                     break;
 419                 case CHANNEL_NETWORK_PACKETS_SENT:
 420                     state = systeminfo.getNetworkPacketsSent(deviceIndex);
 421                     break;
 422                 case CHANNEL_PROCESS_LOAD:
 423                     state = systeminfo.getProcessCpuUsage(deviceIndex);
 424                     break;
 425                 case CHANNEL_PROCESS_MEMORY:
 426                     state = systeminfo.getProcessMemoryUsage(deviceIndex);
 427                     break;
 428                 case CHANNEL_PROCESS_NAME:
 429                     state = systeminfo.getProcessName(deviceIndex);
 430                     break;
 431                 case CHANNEL_PROCESS_PATH:
 432                     state = systeminfo.getProcessPath(deviceIndex);
 433                     break;
 434                 case CHANNEL_PROCESS_THREADS:
 435                     state = systeminfo.getProcessThreads(deviceIndex);
 436                     break;
 437                 default:
 438                     logger.debug("Channel with unknown ID: {} !", channelID);
 439             }
 440         } catch (DeviceNotFoundException e) {
 441             logger.warn("No information for channel {} with device index {} :", channelID, deviceIndex);
 442         } catch (Exception e) {
 443             logger.debug("Unexpected error occurred while getting system information!", e);
 444             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR,
 445                     "Cannot get system info as result of unexpected error. Please try to restart the binding (remove and re-add the thing)!");
 446         }
 447         return state != null ? state : UnDefType.UNDEF;
 448     }
 449
 450     /**
 451      * The device index is an optional part of the channelID - the last characters of the groupID. It is used to
 452      * identify unique device, when more than one devices are available (e.g. local disks with names C:\, D:\, E"\ - the
 453      * first will have deviceIndex=0, the second deviceIndex=1 ant etc).
 454      * When no device index is specified, default value of 0 (first device in the list) is returned.
 455      *
 456      * @param channelID the ID of the channel
 457      * @return natural number (number >=0)
 458      */
 459     private int getDeviceIndex(ChannelUID channelUID) {
 460         String channelGroupID = channelUID.getGroupId();
 461         if (channelGroupID == null) {
 462             return 0;
 463         }
 464
 465         if (channelGroupID.contains(CHANNEL_GROUP_PROCESS)) {
 466             // Only in this case the deviceIndex is part of the channel configuration - PID (Process Identifier)
 467             int pid = getPID(channelUID);
 468             logger.debug("Channel with UID {} tracks process with PID: {}", channelUID, pid);
 469             return pid;
 470         }
 471
 472         char lastChar = channelGroupID.charAt(channelGroupID.length() - 1);
 473         if (Character.isDigit(lastChar)) {
 474             // All non-digits are deleted from the ID
 475             String deviceIndexPart = channelGroupID.replaceAll("\\D+", "");
 476             return Integer.parseInt(deviceIndexPart);
 477         }
 478
 479         return 0;
 480     }
 481
 482     /**
 483      * This method gets the process identifier (PID) for specific process
 484      *
 485      * @param channelUID channel unique identifier
 486      * @return natural number
 487      */
 488     private int getPID(ChannelUID channelUID) {
 489         int pid = 0;
 490         try {
 491             Channel channel = this.thing.getChannel(channelUID.getId());
 492             if (channel != null) {
 493                 Configuration channelProperties = channel.getConfiguration();
 494                 BigDecimal pidValue = (BigDecimal) channelProperties.get(PID_PARAM);
 495                 if (pidValue == null || pidValue.intValue() < 0) {
 496                     throw new IllegalArgumentException("Invalid value for Process Identifier.");
 497                 } else {
 498                     pid = pidValue.intValue();
 499                 }
 500             } else {
 501                 logger.debug("Channel does not exist ! Fall back to default value.");
 502             }
 503         } catch (ClassCastException e) {
 504             logger.debug("Channel configuration cannot be read ! Fall back to default value.", e);
 505         } catch (IllegalArgumentException e) {
 506             logger.debug("PID (Process Identifier) must be positive number. Fall back to default value. ", e);
 507         }
 508         return pid;
 509     }
 510
 511     @Override
 512     public void handleCommand(ChannelUID channelUID, Command command) {
 513         if (thing.getStatus().equals(ThingStatus.ONLINE)) {
 514             if (command instanceof RefreshType) {
 515                 logger.debug("Refresh command received for channel {}!", channelUID);
 516                 publishDataForChannel(channelUID);
 517             } else {
 518                 logger.debug("Unsupported command {}! Supported commands: REFRESH", command);
 519             }
 520         } else {
 521             logger.debug("Cannot handle command. Thing is not ONLINE.");
 522         }
 523     }
 524
 525     private boolean isConfigurationKeyChanged(Configuration currentConfig, Configuration newConfig, String key) {
 526         Object currentValue = currentConfig.get(key);
 527         Object newValue = newConfig.get(key);
 528
 529         if (currentValue == null) {
 530             return (newValue != null);
 531         }
 532
 533         return !currentValue.equals(newValue);
 534     }
 535
 536     @Override
 537     public void thingUpdated(Thing thing) {
 538         logger.trace("About to update thing.");
 539         boolean isChannelConfigChanged = false;
 540         List<Channel> channels = thing.getChannels();
 541
 542         for (Channel channel : channels) {
 543             ChannelUID channelUID = channel.getUID();
 544             Configuration newChannelConfig = channel.getConfiguration();
 545             Channel oldChannel = this.thing.getChannel(channelUID.getId());
 546
 547             if (oldChannel == null) {
 548                 logger.warn("Channel with UID {} cannot be updated, as it cannot be found !", channelUID);
 549                 continue;
 550             }
 551             Configuration currentChannelConfig = oldChannel.getConfiguration();
 552
 553             if (isConfigurationKeyChanged(currentChannelConfig, newChannelConfig, PRIOIRITY_PARAM)) {
 554                 isChannelConfigChanged = true;
 555
 556                 handleChannelConfigurationChange(oldChannel, newChannelConfig, PRIOIRITY_PARAM);
 557
 558                 String newPriority = (String) newChannelConfig.get(PRIOIRITY_PARAM);
 559                 changeChannelPriority(channelUID, newPriority);
 560             }
 561
 562             if (isConfigurationKeyChanged(currentChannelConfig, newChannelConfig, PID_PARAM)) {
 563                 isChannelConfigChanged = true;
 564                 handleChannelConfigurationChange(oldChannel, newChannelConfig, PID_PARAM);
 565             }
 566         }
 567
 568         if (!(isInitialized() && isChannelConfigChanged)) {
 569             super.thingUpdated(thing);
 570         }
 571     }
 572
 573     private void handleChannelConfigurationChange(Channel channel, Configuration newConfig, String parameter) {
 574         Configuration configuration = channel.getConfiguration();
 575         Object oldValue = configuration.get(parameter);
 576
 577         configuration.put(parameter, newConfig.get(parameter));
 578
 579         Object newValue = newConfig.get(parameter);
 580         logger.debug("Channel with UID {} has changed its {} from {} to {}", channel.getUID(), parameter, oldValue,
 581                 newValue);
 582         publishDataForChannel(channel.getUID());
 583     }
 584
 585     private void stopScheduledUpdates() {
 586         ScheduledFuture<?> localHighPriorityTasks = highPriorityTasks;
 587         if (localHighPriorityTasks != null) {
 588             logger.debug("High prioriy tasks will not be run anymore !");
 589             localHighPriorityTasks.cancel(true);
 590         }
 591
 592         ScheduledFuture<?> localMediumPriorityTasks = mediumPriorityTasks;
 593         if (localMediumPriorityTasks != null) {
 594             logger.debug("Medium prioriy tasks will not be run anymore !");
 595             localMediumPriorityTasks.cancel(true);
 596         }
 597     }
 598
 599     @Override
 600     public void dispose() {
 601         stopScheduledUpdates();
 602     }
 603 }