git.basschouten.com Git - openhab-addons.git/blob

   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.remoteopenhab.internal.handler;
  14
  15 import java.net.MalformedURLException;
  16 import java.net.URL;
  17 import java.time.DateTimeException;
  18 import java.time.ZonedDateTime;
  19 import java.time.format.DateTimeFormatter;
  20 import java.util.ArrayList;
  21 import java.util.Collection;
  22 import java.util.Collections;
  23 import java.util.HashMap;
  24 import java.util.List;
  25 import java.util.Map;
  26 import java.util.concurrent.ScheduledFuture;
  27 import java.util.concurrent.TimeUnit;
  28
  29 import javax.ws.rs.client.ClientBuilder;
  30
  31 import org.eclipse.jdt.annotation.NonNullByDefault;
  32 import org.eclipse.jdt.annotation.Nullable;
  33 import org.eclipse.jetty.client.HttpClient;
  34 import org.openhab.binding.remoteopenhab.internal.RemoteopenhabChannelTypeProvider;
  35 import org.openhab.binding.remoteopenhab.internal.RemoteopenhabStateDescriptionOptionProvider;
  36 import org.openhab.binding.remoteopenhab.internal.config.RemoteopenhabServerConfiguration;
  37 import org.openhab.binding.remoteopenhab.internal.data.RemoteopenhabItem;
  38 import org.openhab.binding.remoteopenhab.internal.data.RemoteopenhabStateDescription;
  39 import org.openhab.binding.remoteopenhab.internal.data.RemoteopenhabStateOption;
  40 import org.openhab.binding.remoteopenhab.internal.discovery.RemoteopenhabDiscoveryService;
  41 import org.openhab.binding.remoteopenhab.internal.exceptions.RemoteopenhabException;
  42 import org.openhab.binding.remoteopenhab.internal.listener.RemoteopenhabItemsDataListener;
  43 import org.openhab.binding.remoteopenhab.internal.listener.RemoteopenhabStreamingDataListener;
  44 import org.openhab.binding.remoteopenhab.internal.rest.RemoteopenhabRestClient;
  45 import org.openhab.core.library.CoreItemFactory;
  46 import org.openhab.core.library.types.DateTimeType;
  47 import org.openhab.core.library.types.DecimalType;
  48 import org.openhab.core.library.types.HSBType;
  49 import org.openhab.core.library.types.OnOffType;
  50 import org.openhab.core.library.types.OpenClosedType;
  51 import org.openhab.core.library.types.PercentType;
  52 import org.openhab.core.library.types.PlayPauseType;
  53 import org.openhab.core.library.types.PointType;
  54 import org.openhab.core.library.types.QuantityType;
  55 import org.openhab.core.library.types.RawType;
  56 import org.openhab.core.library.types.StringType;
  57 import org.openhab.core.thing.Bridge;
  58 import org.openhab.core.thing.Channel;
  59 import org.openhab.core.thing.ChannelUID;
  60 import org.openhab.core.thing.ThingStatus;
  61 import org.openhab.core.thing.ThingStatusDetail;
  62 import org.openhab.core.thing.binding.BaseBridgeHandler;
  63 import org.openhab.core.thing.binding.ThingHandlerService;
  64 import org.openhab.core.thing.binding.builder.ChannelBuilder;
  65 import org.openhab.core.thing.binding.builder.ThingBuilder;
  66 import org.openhab.core.thing.type.AutoUpdatePolicy;
  67 import org.openhab.core.thing.type.ChannelKind;
  68 import org.openhab.core.thing.type.ChannelType;
  69 import org.openhab.core.thing.type.ChannelTypeBuilder;
  70 import org.openhab.core.thing.type.ChannelTypeUID;
  71 import org.openhab.core.types.Command;
  72 import org.openhab.core.types.RefreshType;
  73 import org.openhab.core.types.State;
  74 import org.openhab.core.types.StateDescriptionFragmentBuilder;
  75 import org.openhab.core.types.StateOption;
  76 import org.openhab.core.types.TypeParser;
  77 import org.openhab.core.types.UnDefType;
  78 import org.osgi.service.jaxrs.client.SseEventSourceFactory;
  79 import org.slf4j.Logger;
  80 import org.slf4j.LoggerFactory;
  81
  82 import com.google.gson.Gson;
  83
  84 /**
  85  * The {@link RemoteopenhabBridgeHandler} is responsible for handling commands and updating states
  86  * using the REST API of the remote openHAB server.
  87  *
  88  * @author Laurent Garnier - Initial contribution
  89  */
  90 @NonNullByDefault
  91 public class RemoteopenhabBridgeHandler extends BaseBridgeHandler
  92         implements RemoteopenhabStreamingDataListener, RemoteopenhabItemsDataListener {
  93
  94     private static final String DATE_FORMAT_PATTERN = "yyyy-MM-dd'T'HH:mm:ss.SSSZ";
  95     private static final DateTimeFormatter FORMATTER_DATE = DateTimeFormatter.ofPattern(DATE_FORMAT_PATTERN);
  96
  97     private static final int MAX_STATE_SIZE_FOR_LOGGING = 50;
  98
  99     private final Logger logger = LoggerFactory.getLogger(RemoteopenhabBridgeHandler.class);
 100
 101     private final HttpClient httpClientTrustingCert;
 102     private final RemoteopenhabChannelTypeProvider channelTypeProvider;
 103     private final RemoteopenhabStateDescriptionOptionProvider stateDescriptionProvider;
 104
 105     private final Object updateThingLock = new Object();
 106
 107     private @NonNullByDefault({}) RemoteopenhabServerConfiguration config;
 108
 109     private @Nullable ScheduledFuture<?> checkConnectionJob;
 110     private RemoteopenhabRestClient restClient;
 111
 112     private Map<ChannelUID, State> channelsLastStates = new HashMap<>();
 113
 114     public RemoteopenhabBridgeHandler(Bridge bridge, HttpClient httpClient, HttpClient httpClientTrustingCert,
 115             ClientBuilder clientBuilder, SseEventSourceFactory eventSourceFactory,
 116             RemoteopenhabChannelTypeProvider channelTypeProvider,
 117             RemoteopenhabStateDescriptionOptionProvider stateDescriptionProvider, final Gson jsonParser) {
 118         super(bridge);
 119         this.httpClientTrustingCert = httpClientTrustingCert;
 120         this.channelTypeProvider = channelTypeProvider;
 121         this.stateDescriptionProvider = stateDescriptionProvider;
 122         this.restClient = new RemoteopenhabRestClient(httpClient, clientBuilder, eventSourceFactory, jsonParser);
 123     }
 124
 125     @Override
 126     public void initialize() {
 127         logger.debug("Initializing remote openHAB handler for bridge {}", getThing().getUID());
 128
 129         config = getConfigAs(RemoteopenhabServerConfiguration.class);
 130
 131         String host = config.host.trim();
 132         if (host.length() == 0) {
 133             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR,
 134                     "Undefined server address setting in the thing configuration");
 135             return;
 136         }
 137         String path = config.restPath.trim();
 138         if (path.length() == 0 || !path.startsWith("/")) {
 139             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR,
 140                     "Invalid REST API path setting in the thing configuration");
 141             return;
 142         }
 143         URL url;
 144         try {
 145             url = new URL(config.useHttps ? "https" : "http", host, config.port, path);
 146         } catch (MalformedURLException e) {
 147             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR,
 148                     "Invalid REST URL built from the settings in the thing configuration");
 149             return;
 150         }
 151
 152         String urlStr = url.toString();
 153         if (urlStr.endsWith("/")) {
 154             urlStr = urlStr.substring(0, urlStr.length() - 1);
 155         }
 156         logger.debug("REST URL = {}", urlStr);
 157
 158         restClient.setRestUrl(urlStr);
 159         restClient.setAccessToken(config.token);
 160         if (config.useHttps && config.trustedCertificate) {
 161             restClient.setHttpClient(httpClientTrustingCert);
 162             restClient.setTrustedCertificate(true);
 163         }
 164
 165         updateStatus(ThingStatus.UNKNOWN);
 166
 167         scheduler.submit(() -> checkConnection(false));
 168         if (config.accessibilityInterval > 0) {
 169             startCheckConnectionJob(config.accessibilityInterval, config.aliveInterval, config.restartIfNoActivity);
 170         }
 171     }
 172
 173     @Override
 174     public void dispose() {
 175         logger.debug("Disposing remote openHAB handler for bridge {}", getThing().getUID());
 176         stopStreamingUpdates(false);
 177         stopCheckConnectionJob();
 178         channelsLastStates.clear();
 179     }
 180
 181     @Override
 182     public void handleCommand(ChannelUID channelUID, Command command) {
 183         if (getThing().getStatus() != ThingStatus.ONLINE) {
 184             return;
 185         }
 186
 187         try {
 188             if (command instanceof RefreshType) {
 189                 String state = restClient.getRemoteItemState(channelUID.getId());
 190                 updateChannelState(channelUID.getId(), null, state, false);
 191             } else if (isLinked(channelUID)) {
 192                 restClient.sendCommandToRemoteItem(channelUID.getId(), command);
 193                 String commandStr = command.toFullString();
 194                 logger.debug("Sending command {} to remote item {} succeeded",
 195                         commandStr.length() < MAX_STATE_SIZE_FOR_LOGGING ? commandStr
 196                                 : commandStr.substring(0, MAX_STATE_SIZE_FOR_LOGGING) + "...",
 197                         channelUID.getId());
 198             }
 199         } catch (RemoteopenhabException e) {
 200             logger.debug("{}", e.getMessage());
 201         }
 202     }
 203
 204     private boolean createChannels(List<RemoteopenhabItem> items, boolean replace) {
 205         synchronized (updateThingLock) {
 206             try {
 207                 int nbGroups = 0;
 208                 int nbChannelTypesCreated = 0;
 209                 List<Channel> channels = new ArrayList<>();
 210                 for (RemoteopenhabItem item : items) {
 211                     String itemType = item.type;
 212                     boolean readOnly = false;
 213                     if ("Group".equals(itemType)) {
 214                         if (item.groupType.isEmpty()) {
 215                             // Standard groups are ignored
 216                             nbGroups++;
 217                             continue;
 218                         } else {
 219                             itemType = item.groupType;
 220                         }
 221                     } else {
 222                         if (item.stateDescription != null && item.stateDescription.readOnly) {
 223                             readOnly = true;
 224                         }
 225                     }
 226                     // Ignore pattern containing a transformation (detected by a parenthesis in the pattern)
 227                     RemoteopenhabStateDescription stateDescription = item.stateDescription;
 228                     String pattern = (stateDescription == null || stateDescription.pattern.contains("(")) ? ""
 229                             : stateDescription.pattern;
 230                     ChannelTypeUID channelTypeUID;
 231                     ChannelType channelType = channelTypeProvider.getChannelType(itemType, readOnly, pattern);
 232                     String label;
 233                     String description;
 234                     if (channelType == null) {
 235                         channelTypeUID = channelTypeProvider.buildNewChannelTypeUID(itemType);
 236                         logger.trace("Create the channel type {} for item type {} ({} and with pattern {})",
 237                                 channelTypeUID, itemType, readOnly ? "read only" : "read write", pattern);
 238                         label = String.format("Remote %s Item", itemType);
 239                         description = String.format("An item of type %s from the remote server.", itemType);
 240                         StateDescriptionFragmentBuilder stateDescriptionBuilder = StateDescriptionFragmentBuilder
 241                                 .create().withReadOnly(readOnly);
 242                         if (!pattern.isEmpty()) {
 243                             stateDescriptionBuilder = stateDescriptionBuilder.withPattern(pattern);
 244                         }
 245                         channelType = ChannelTypeBuilder.state(channelTypeUID, label, itemType)
 246                                 .withDescription(description)
 247                                 .withStateDescriptionFragment(stateDescriptionBuilder.build())
 248                                 .withAutoUpdatePolicy(AutoUpdatePolicy.VETO).build();
 249                         channelTypeProvider.addChannelType(itemType, channelType);
 250                         nbChannelTypesCreated++;
 251                     } else {
 252                         channelTypeUID = channelType.getUID();
 253                     }
 254                     ChannelUID channelUID = new ChannelUID(getThing().getUID(), item.name);
 255                     logger.trace("Create the channel {} of type {}", channelUID, channelTypeUID);
 256                     label = "Item " + item.name;
 257                     description = String.format("Item %s from the remote server.", item.name);
 258                     channels.add(ChannelBuilder.create(channelUID, itemType).withType(channelTypeUID)
 259                             .withKind(ChannelKind.STATE).withLabel(label).withDescription(description).build());
 260                 }
 261                 ThingBuilder thingBuilder = editThing();
 262                 if (replace) {
 263                     thingBuilder.withChannels(channels);
 264                     updateThing(thingBuilder.build());
 265                     logger.debug(
 266                             "{} channels defined (with {} different channel types) for the thing {} (from {} items including {} groups)",
 267                             channels.size(), nbChannelTypesCreated, getThing().getUID(), items.size(), nbGroups);
 268                 } else if (channels.size() > 0) {
 269                     int nbRemoved = 0;
 270                     for (Channel channel : channels) {
 271                         if (getThing().getChannel(channel.getUID()) != null) {
 272                             thingBuilder.withoutChannel(channel.getUID());
 273                             nbRemoved++;
 274                         }
 275                     }
 276                     if (nbRemoved > 0) {
 277                         logger.debug("{} channels removed for the thing {} (from {} items)", nbRemoved,
 278                                 getThing().getUID(), items.size());
 279                     }
 280                     for (Channel channel : channels) {
 281                         thingBuilder.withChannel(channel);
 282                     }
 283                     updateThing(thingBuilder.build());
 284                     if (nbGroups > 0) {
 285                         logger.debug("{} channels added for the thing {} (from {} items including {} groups)",
 286                                 channels.size(), getThing().getUID(), items.size(), nbGroups);
 287                     } else {
 288                         logger.debug("{} channels added for the thing {} (from {} items)", channels.size(),
 289                                 getThing().getUID(), items.size());
 290                     }
 291                 }
 292                 return true;
 293             } catch (IllegalArgumentException e) {
 294                 logger.warn("An error occurred while creating the channels for the server {}: {}", getThing().getUID(),
 295                         e.getMessage());
 296                 return false;
 297             }
 298         }
 299     }
 300
 301     private void removeChannels(List<RemoteopenhabItem> items) {
 302         synchronized (updateThingLock) {
 303             int nbRemoved = 0;
 304             ThingBuilder thingBuilder = editThing();
 305             for (RemoteopenhabItem item : items) {
 306                 Channel channel = getThing().getChannel(item.name);
 307                 if (channel != null) {
 308                     thingBuilder.withoutChannel(channel.getUID());
 309                     nbRemoved++;
 310                 }
 311             }
 312             if (nbRemoved > 0) {
 313                 updateThing(thingBuilder.build());
 314                 logger.debug("{} channels removed for the thing {} (from {} items)", nbRemoved, getThing().getUID(),
 315                         items.size());
 316             }
 317         }
 318     }
 319
 320     private void setStateOptions(List<RemoteopenhabItem> items) {
 321         for (RemoteopenhabItem item : items) {
 322             Channel channel = getThing().getChannel(item.name);
 323             RemoteopenhabStateDescription descr = item.stateDescription;
 324             List<RemoteopenhabStateOption> options = descr == null ? null : descr.options;
 325             if (channel != null && options != null && options.size() > 0) {
 326                 List<StateOption> stateOptions = new ArrayList<>();
 327                 for (RemoteopenhabStateOption option : options) {
 328                     stateOptions.add(new StateOption(option.value, option.label));
 329                 }
 330                 stateDescriptionProvider.setStateOptions(channel.getUID(), stateOptions);
 331                 logger.trace("{} options set for the channel {}", options.size(), channel.getUID());
 332             }
 333         }
 334     }
 335
 336     public void checkConnection(boolean restartSse) {
 337         logger.debug("Try the root REST API...");
 338         try {
 339             restClient.tryApi();
 340             if (restClient.getRestApiVersion() == null) {
 341                 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR,
 342                         "OH 1.x server not supported by the binding");
 343             } else if (getThing().getStatus() != ThingStatus.ONLINE) {
 344                 List<RemoteopenhabItem> items = restClient.getRemoteItems("name,type,groupType,state,stateDescription");
 345
 346                 if (createChannels(items, true)) {
 347                     setStateOptions(items);
 348                     for (RemoteopenhabItem item : items) {
 349                         updateChannelState(item.name, null, item.state, false);
 350                     }
 351
 352                     updateStatus(ThingStatus.ONLINE);
 353
 354                     restartStreamingUpdates();
 355                 } else {
 356                     updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.NONE,
 357                             "Dynamic creation of the channels for the remote server items failed");
 358                     stopStreamingUpdates();
 359                 }
 360             } else if (restartSse) {
 361                 logger.debug("The SSE connection is restarted because there was no recent event received");
 362                 restartStreamingUpdates();
 363             }
 364         } catch (RemoteopenhabException e) {
 365             logger.debug("{}", e.getMessage());
 366             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, e.getMessage());
 367             stopStreamingUpdates();
 368         }
 369     }
 370
 371     private void startCheckConnectionJob(int accessibilityInterval, int aliveInterval, boolean restartIfNoActivity) {
 372         ScheduledFuture<?> localCheckConnectionJob = checkConnectionJob;
 373         if (localCheckConnectionJob == null || localCheckConnectionJob.isCancelled()) {
 374             checkConnectionJob = scheduler.scheduleWithFixedDelay(() -> {
 375                 long millisSinceLastEvent = System.currentTimeMillis() - restClient.getLastEventTimestamp();
 376                 if (getThing().getStatus() != ThingStatus.ONLINE || aliveInterval == 0
 377                         || restClient.getLastEventTimestamp() == 0) {
 378                     logger.debug("Time to check server accessibility");
 379                     checkConnection(restartIfNoActivity && aliveInterval != 0);
 380                 } else if (millisSinceLastEvent > (aliveInterval * 60000)) {
 381                     logger.debug(
 382                             "Time to check server accessibility (maybe disconnected from streaming events, millisSinceLastEvent={})",
 383                             millisSinceLastEvent);
 384                     checkConnection(restartIfNoActivity);
 385                 } else {
 386                     logger.debug(
 387                             "Bypass server accessibility check (receiving streaming events, millisSinceLastEvent={})",
 388                             millisSinceLastEvent);
 389                 }
 390             }, accessibilityInterval, accessibilityInterval, TimeUnit.MINUTES);
 391         }
 392     }
 393
 394     private void stopCheckConnectionJob() {
 395         ScheduledFuture<?> localCheckConnectionJob = checkConnectionJob;
 396         if (localCheckConnectionJob != null) {
 397             localCheckConnectionJob.cancel(true);
 398             checkConnectionJob = null;
 399         }
 400     }
 401
 402     private void restartStreamingUpdates() {
 403         synchronized (restClient) {
 404             stopStreamingUpdates();
 405             startStreamingUpdates();
 406         }
 407     }
 408
 409     private void startStreamingUpdates() {
 410         synchronized (restClient) {
 411             restClient.addStreamingDataListener(this);
 412             restClient.addItemsDataListener(this);
 413             restClient.start();
 414         }
 415     }
 416
 417     private void stopStreamingUpdates() {
 418         stopStreamingUpdates(true);
 419     }
 420
 421     private void stopStreamingUpdates(boolean waitingForCompletion) {
 422         synchronized (restClient) {
 423             restClient.stop(waitingForCompletion);
 424             restClient.removeStreamingDataListener(this);
 425             restClient.removeItemsDataListener(this);
 426         }
 427     }
 428
 429     public RemoteopenhabRestClient gestRestClient() {
 430         return restClient;
 431     }
 432
 433     @Override
 434     public void onConnected() {
 435         updateStatus(ThingStatus.ONLINE);
 436     }
 437
 438     @Override
 439     public void onDisconnected() {
 440         updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, "Disconected from the remote server");
 441     }
 442
 443     @Override
 444     public void onError(String message) {
 445         updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, message);
 446     }
 447
 448     @Override
 449     public void onItemStateEvent(String itemName, String stateType, String state, boolean onlyIfStateChanged) {
 450         updateChannelState(itemName, stateType, state, onlyIfStateChanged);
 451     }
 452
 453     @Override
 454     public void onItemAdded(RemoteopenhabItem item) {
 455         createChannels(List.of(item), false);
 456     }
 457
 458     @Override
 459     public void onItemRemoved(RemoteopenhabItem item) {
 460         removeChannels(List.of(item));
 461     }
 462
 463     @Override
 464     public void onItemUpdated(RemoteopenhabItem newItem, RemoteopenhabItem oldItem) {
 465         if (!newItem.type.equals(oldItem.type)) {
 466             createChannels(List.of(newItem), false);
 467         } else {
 468             logger.trace("Updated remote item {} ignored because item type {} is unchanged", newItem.name,
 469                     newItem.type);
 470         }
 471     }
 472
 473     private void updateChannelState(String itemName, @Nullable String stateType, String state,
 474             boolean onlyIfStateChanged) {
 475         Channel channel = getThing().getChannel(itemName);
 476         if (channel == null) {
 477             logger.trace("No channel for item {}", itemName);
 478             return;
 479         }
 480         String acceptedItemType = channel.getAcceptedItemType();
 481         if (acceptedItemType == null) {
 482             logger.trace("Channel without accepted item type for item {}", itemName);
 483             return;
 484         }
 485         if (!isLinked(channel.getUID())) {
 486             logger.trace("Unlinked channel {}", channel.getUID());
 487             return;
 488         }
 489         State channelState = null;
 490         try {
 491             if (stateType == null && "NULL".equals(state)) {
 492                 channelState = UnDefType.NULL;
 493             } else if (stateType == null && "UNDEF".equals(state)) {
 494                 channelState = UnDefType.UNDEF;
 495             } else if ("UnDef".equals(stateType)) {
 496                 switch (state) {
 497                     case "NULL":
 498                         channelState = UnDefType.NULL;
 499                         break;
 500                     case "UNDEF":
 501                         channelState = UnDefType.UNDEF;
 502                         break;
 503                     default:
 504                         logger.debug("Invalid UnDef value {} for item {}", state, itemName);
 505                         break;
 506                 }
 507             } else if (acceptedItemType.startsWith(CoreItemFactory.NUMBER + ":")) {
 508                 // Item type Number with dimension
 509                 if (stateType == null || "Quantity".equals(stateType)) {
 510                     List<Class<? extends State>> stateTypes = Collections.singletonList(QuantityType.class);
 511                     channelState = TypeParser.parseState(stateTypes, state);
 512                 } else if ("Decimal".equals(stateType)) {
 513                     channelState = new DecimalType(state);
 514                 } else {
 515                     logger.debug("Unexpected value type {} for item {}", stateType, itemName);
 516                 }
 517             } else {
 518                 switch (acceptedItemType) {
 519                     case CoreItemFactory.STRING:
 520                         if (checkStateType(itemName, stateType, "String")) {
 521                             channelState = new StringType(state);
 522                         }
 523                         break;
 524                     case CoreItemFactory.NUMBER:
 525                         if (checkStateType(itemName, stateType, "Decimal")) {
 526                             channelState = new DecimalType(state);
 527                         }
 528                         break;
 529                     case CoreItemFactory.SWITCH:
 530                         if (checkStateType(itemName, stateType, "OnOff")) {
 531                             channelState = "ON".equals(state) ? OnOffType.ON : OnOffType.OFF;
 532                         }
 533                         break;
 534                     case CoreItemFactory.CONTACT:
 535                         if (checkStateType(itemName, stateType, "OpenClosed")) {
 536                             channelState = "OPEN".equals(state) ? OpenClosedType.OPEN : OpenClosedType.CLOSED;
 537                         }
 538                         break;
 539                     case CoreItemFactory.DIMMER:
 540                         if (checkStateType(itemName, stateType, "Percent")) {
 541                             channelState = new PercentType(state);
 542                         }
 543                         break;
 544                     case CoreItemFactory.COLOR:
 545                         if (checkStateType(itemName, stateType, "HSB")) {
 546                             channelState = HSBType.valueOf(state);
 547                         }
 548                         break;
 549                     case CoreItemFactory.DATETIME:
 550                         if (checkStateType(itemName, stateType, "DateTime")) {
 551                             channelState = new DateTimeType(ZonedDateTime.parse(state, FORMATTER_DATE));
 552                         }
 553                         break;
 554                     case CoreItemFactory.LOCATION:
 555                         if (checkStateType(itemName, stateType, "Point")) {
 556                             channelState = new PointType(state);
 557                         }
 558                         break;
 559                     case CoreItemFactory.IMAGE:
 560                         if (checkStateType(itemName, stateType, "Raw")) {
 561                             channelState = RawType.valueOf(state);
 562                         }
 563                         break;
 564                     case CoreItemFactory.PLAYER:
 565                         if (checkStateType(itemName, stateType, "PlayPause")) {
 566                             switch (state) {
 567                                 case "PLAY":
 568                                     channelState = PlayPauseType.PLAY;
 569                                     break;
 570                                 case "PAUSE":
 571                                     channelState = PlayPauseType.PAUSE;
 572                                     break;
 573                                 default:
 574                                     logger.debug("Unexpected value {} for item {}", state, itemName);
 575                                     break;
 576                             }
 577                         }
 578                         break;
 579                     case CoreItemFactory.ROLLERSHUTTER:
 580                         if (checkStateType(itemName, stateType, "Percent")) {
 581                             channelState = new PercentType(state);
 582                         }
 583                         break;
 584                     default:
 585                         logger.debug("Item type {} is not yet supported", acceptedItemType);
 586                         break;
 587                 }
 588             }
 589         } catch (IllegalArgumentException | DateTimeException e) {
 590             logger.warn("Failed to parse state \"{}\" for item {}: {}", state, itemName, e.getMessage());
 591             channelState = UnDefType.UNDEF;
 592         }
 593         if (channelState != null) {
 594             if (onlyIfStateChanged && channelState.equals(channelsLastStates.get(channel.getUID()))) {
 595                 logger.trace("ItemStateChangedEvent ignored for item {} as state is identical to the last state",
 596                         itemName);
 597                 return;
 598             }
 599             channelsLastStates.put(channel.getUID(), channelState);
 600             updateState(channel.getUID(), channelState);
 601             String channelStateStr = channelState.toFullString();
 602             logger.debug("updateState {} with {}", channel.getUID(),
 603                     channelStateStr.length() < MAX_STATE_SIZE_FOR_LOGGING ? channelStateStr
 604                             : channelStateStr.substring(0, MAX_STATE_SIZE_FOR_LOGGING) + "...");
 605         }
 606     }
 607
 608     private boolean checkStateType(String itemName, @Nullable String stateType, String expectedType) {
 609         if (stateType != null && !expectedType.equals(stateType)) {
 610             logger.debug("Unexpected value type {} for item {}", stateType, itemName);
 611             return false;
 612         } else {
 613             return true;
 614         }
 615     }
 616
 617     @Override
 618     public Collection<Class<? extends ThingHandlerService>> getServices() {
 619         return Collections.singleton(RemoteopenhabDiscoveryService.class);
 620     }
 621 }