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 import java.util.stream.Collectors;
  29
  30 import javax.ws.rs.client.ClientBuilder;
  31
  32 import org.eclipse.jdt.annotation.NonNullByDefault;
  33 import org.eclipse.jdt.annotation.Nullable;
  34 import org.eclipse.jetty.client.HttpClient;
  35 import org.openhab.binding.remoteopenhab.internal.RemoteopenhabChannelTypeProvider;
  36 import org.openhab.binding.remoteopenhab.internal.RemoteopenhabStateDescriptionOptionProvider;
  37 import org.openhab.binding.remoteopenhab.internal.config.RemoteopenhabServerConfiguration;
  38 import org.openhab.binding.remoteopenhab.internal.data.RemoteopenhabItem;
  39 import org.openhab.binding.remoteopenhab.internal.data.RemoteopenhabStateDescription;
  40 import org.openhab.binding.remoteopenhab.internal.data.RemoteopenhabStateOption;
  41 import org.openhab.binding.remoteopenhab.internal.discovery.RemoteopenhabDiscoveryService;
  42 import org.openhab.binding.remoteopenhab.internal.exceptions.RemoteopenhabException;
  43 import org.openhab.binding.remoteopenhab.internal.listener.RemoteopenhabItemsDataListener;
  44 import org.openhab.binding.remoteopenhab.internal.listener.RemoteopenhabStreamingDataListener;
  45 import org.openhab.binding.remoteopenhab.internal.rest.RemoteopenhabRestClient;
  46 import org.openhab.core.library.CoreItemFactory;
  47 import org.openhab.core.library.types.DateTimeType;
  48 import org.openhab.core.library.types.DecimalType;
  49 import org.openhab.core.library.types.HSBType;
  50 import org.openhab.core.library.types.OnOffType;
  51 import org.openhab.core.library.types.OpenClosedType;
  52 import org.openhab.core.library.types.PercentType;
  53 import org.openhab.core.library.types.PlayPauseType;
  54 import org.openhab.core.library.types.PointType;
  55 import org.openhab.core.library.types.QuantityType;
  56 import org.openhab.core.library.types.RawType;
  57 import org.openhab.core.library.types.StringType;
  58 import org.openhab.core.net.NetUtil;
  59 import org.openhab.core.thing.Bridge;
  60 import org.openhab.core.thing.Channel;
  61 import org.openhab.core.thing.ChannelUID;
  62 import org.openhab.core.thing.ThingStatus;
  63 import org.openhab.core.thing.ThingStatusDetail;
  64 import org.openhab.core.thing.binding.BaseBridgeHandler;
  65 import org.openhab.core.thing.binding.ThingHandlerService;
  66 import org.openhab.core.thing.binding.builder.ChannelBuilder;
  67 import org.openhab.core.thing.binding.builder.ThingBuilder;
  68 import org.openhab.core.thing.type.AutoUpdatePolicy;
  69 import org.openhab.core.thing.type.ChannelKind;
  70 import org.openhab.core.thing.type.ChannelType;
  71 import org.openhab.core.thing.type.ChannelTypeBuilder;
  72 import org.openhab.core.thing.type.ChannelTypeUID;
  73 import org.openhab.core.types.Command;
  74 import org.openhab.core.types.RefreshType;
  75 import org.openhab.core.types.State;
  76 import org.openhab.core.types.StateDescriptionFragmentBuilder;
  77 import org.openhab.core.types.StateOption;
  78 import org.openhab.core.types.TypeParser;
  79 import org.openhab.core.types.UnDefType;
  80 import org.osgi.service.jaxrs.client.SseEventSourceFactory;
  81 import org.slf4j.Logger;
  82 import org.slf4j.LoggerFactory;
  83
  84 import com.google.gson.Gson;
  85
  86 /**
  87  * The {@link RemoteopenhabBridgeHandler} is responsible for handling commands and updating states
  88  * using the REST API of the remote openHAB server.
  89  *
  90  * @author Laurent Garnier - Initial contribution
  91  */
  92 @NonNullByDefault
  93 public class RemoteopenhabBridgeHandler extends BaseBridgeHandler
  94         implements RemoteopenhabStreamingDataListener, RemoteopenhabItemsDataListener {
  95
  96     private static final String DATE_FORMAT_PATTERN = "yyyy-MM-dd'T'HH:mm:ss.SSSZ";
  97     private static final DateTimeFormatter FORMATTER_DATE = DateTimeFormatter.ofPattern(DATE_FORMAT_PATTERN);
  98
  99     private static final int MAX_STATE_SIZE_FOR_LOGGING = 50;
 100
 101     private final Logger logger = LoggerFactory.getLogger(RemoteopenhabBridgeHandler.class);
 102
 103     private final HttpClient httpClientTrustingCert;
 104     private final RemoteopenhabChannelTypeProvider channelTypeProvider;
 105     private final RemoteopenhabStateDescriptionOptionProvider stateDescriptionProvider;
 106
 107     private final Object updateThingLock = new Object();
 108
 109     private @NonNullByDefault({}) RemoteopenhabServerConfiguration config;
 110
 111     private @Nullable ScheduledFuture<?> checkConnectionJob;
 112     private RemoteopenhabRestClient restClient;
 113
 114     private Map<ChannelUID, State> channelsLastStates = new HashMap<>();
 115
 116     public RemoteopenhabBridgeHandler(Bridge bridge, HttpClient httpClient, HttpClient httpClientTrustingCert,
 117             ClientBuilder clientBuilder, SseEventSourceFactory eventSourceFactory,
 118             RemoteopenhabChannelTypeProvider channelTypeProvider,
 119             RemoteopenhabStateDescriptionOptionProvider stateDescriptionProvider, final Gson jsonParser) {
 120         super(bridge);
 121         this.httpClientTrustingCert = httpClientTrustingCert;
 122         this.channelTypeProvider = channelTypeProvider;
 123         this.stateDescriptionProvider = stateDescriptionProvider;
 124         this.restClient = new RemoteopenhabRestClient(httpClient, clientBuilder, eventSourceFactory, jsonParser);
 125     }
 126
 127     @Override
 128     public void initialize() {
 129         logger.debug("Initializing remote openHAB handler for bridge {}", getThing().getUID());
 130
 131         config = getConfigAs(RemoteopenhabServerConfiguration.class);
 132
 133         String host = config.host.trim();
 134         if (host.length() == 0) {
 135             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR,
 136                     "Undefined server address setting in the thing configuration");
 137             return;
 138         }
 139         List<String> localIpAddresses = NetUtil.getAllInterfaceAddresses().stream()
 140                 .filter(a -> !a.getAddress().isLinkLocalAddress())
 141                 .map(a -> a.getAddress().getHostAddress().split("%")[0]).collect(Collectors.toList());
 142         if (localIpAddresses.contains(host)) {
 143             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR,
 144                     "Do not use the local server as a remote server in the thing configuration");
 145             return;
 146         }
 147         String path = config.restPath.trim();
 148         if (path.length() == 0 || !path.startsWith("/")) {
 149             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR,
 150                     "Invalid REST API path setting in the thing configuration");
 151             return;
 152         }
 153         URL url;
 154         try {
 155             url = new URL(config.useHttps ? "https" : "http", host, config.port, path);
 156         } catch (MalformedURLException e) {
 157             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR,
 158                     "Invalid REST URL built from the settings in the thing configuration");
 159             return;
 160         }
 161
 162         String urlStr = url.toString();
 163         if (urlStr.endsWith("/")) {
 164             urlStr = urlStr.substring(0, urlStr.length() - 1);
 165         }
 166         logger.debug("REST URL = {}", urlStr);
 167
 168         restClient.setRestUrl(urlStr);
 169         restClient.setAccessToken(config.token);
 170         if (config.useHttps && config.trustedCertificate) {
 171             restClient.setHttpClient(httpClientTrustingCert);
 172             restClient.setTrustedCertificate(true);
 173         }
 174
 175         updateStatus(ThingStatus.UNKNOWN);
 176
 177         scheduler.submit(this::checkConnection);
 178         if (config.accessibilityInterval > 0) {
 179             startCheckConnectionJob(config.accessibilityInterval, config.aliveInterval);
 180         }
 181     }
 182
 183     @Override
 184     public void dispose() {
 185         logger.debug("Disposing remote openHAB handler for bridge {}", getThing().getUID());
 186         stopStreamingUpdates(false);
 187         stopCheckConnectionJob();
 188         channelsLastStates.clear();
 189     }
 190
 191     @Override
 192     public void handleCommand(ChannelUID channelUID, Command command) {
 193         if (getThing().getStatus() != ThingStatus.ONLINE) {
 194             return;
 195         }
 196
 197         try {
 198             if (command instanceof RefreshType) {
 199                 String state = restClient.getRemoteItemState(channelUID.getId());
 200                 updateChannelState(channelUID.getId(), null, state, false);
 201             } else if (isLinked(channelUID)) {
 202                 restClient.sendCommandToRemoteItem(channelUID.getId(), command);
 203                 String commandStr = command.toFullString();
 204                 logger.debug("Sending command {} to remote item {} succeeded",
 205                         commandStr.length() < MAX_STATE_SIZE_FOR_LOGGING ? commandStr
 206                                 : commandStr.substring(0, MAX_STATE_SIZE_FOR_LOGGING) + "...",
 207                         channelUID.getId());
 208             }
 209         } catch (RemoteopenhabException e) {
 210             logger.debug("{}", e.getMessage());
 211         }
 212     }
 213
 214     private boolean createChannels(List<RemoteopenhabItem> items, boolean replace) {
 215         synchronized (updateThingLock) {
 216             try {
 217                 int nbGroups = 0;
 218                 int nbChannelTypesCreated = 0;
 219                 List<Channel> channels = new ArrayList<>();
 220                 for (RemoteopenhabItem item : items) {
 221                     String itemType = item.type;
 222                     boolean readOnly = false;
 223                     if ("Group".equals(itemType)) {
 224                         if (item.groupType.isEmpty()) {
 225                             // Standard groups are ignored
 226                             nbGroups++;
 227                             continue;
 228                         } else {
 229                             itemType = item.groupType;
 230                         }
 231                     } else {
 232                         if (item.stateDescription != null && item.stateDescription.readOnly) {
 233                             readOnly = true;
 234                         }
 235                     }
 236                     // Ignore pattern containing a transformation (detected by a parenthesis in the pattern)
 237                     RemoteopenhabStateDescription stateDescription = item.stateDescription;
 238                     String pattern = (stateDescription == null || stateDescription.pattern.contains("(")) ? ""
 239                             : stateDescription.pattern;
 240                     ChannelTypeUID channelTypeUID;
 241                     ChannelType channelType = channelTypeProvider.getChannelType(itemType, readOnly, pattern);
 242                     String label;
 243                     String description;
 244                     if (channelType == null) {
 245                         channelTypeUID = channelTypeProvider.buildNewChannelTypeUID(itemType);
 246                         logger.trace("Create the channel type {} for item type {} ({} and with pattern {})",
 247                                 channelTypeUID, itemType, readOnly ? "read only" : "read write", pattern);
 248                         label = String.format("Remote %s Item", itemType);
 249                         description = String.format("An item of type %s from the remote server.", itemType);
 250                         StateDescriptionFragmentBuilder stateDescriptionBuilder = StateDescriptionFragmentBuilder
 251                                 .create().withReadOnly(readOnly);
 252                         if (!pattern.isEmpty()) {
 253                             stateDescriptionBuilder = stateDescriptionBuilder.withPattern(pattern);
 254                         }
 255                         channelType = ChannelTypeBuilder.state(channelTypeUID, label, itemType)
 256                                 .withDescription(description)
 257                                 .withStateDescriptionFragment(stateDescriptionBuilder.build())
 258                                 .withAutoUpdatePolicy(AutoUpdatePolicy.VETO).build();
 259                         channelTypeProvider.addChannelType(itemType, channelType);
 260                         nbChannelTypesCreated++;
 261                     } else {
 262                         channelTypeUID = channelType.getUID();
 263                     }
 264                     ChannelUID channelUID = new ChannelUID(getThing().getUID(), item.name);
 265                     logger.trace("Create the channel {} of type {}", channelUID, channelTypeUID);
 266                     label = "Item " + item.name;
 267                     description = String.format("Item %s from the remote server.", item.name);
 268                     channels.add(ChannelBuilder.create(channelUID, itemType).withType(channelTypeUID)
 269                             .withKind(ChannelKind.STATE).withLabel(label).withDescription(description).build());
 270                 }
 271                 ThingBuilder thingBuilder = editThing();
 272                 if (replace) {
 273                     thingBuilder.withChannels(channels);
 274                     updateThing(thingBuilder.build());
 275                     logger.debug(
 276                             "{} channels defined (with {} different channel types) for the thing {} (from {} items including {} groups)",
 277                             channels.size(), nbChannelTypesCreated, getThing().getUID(), items.size(), nbGroups);
 278                 } else if (channels.size() > 0) {
 279                     int nbRemoved = 0;
 280                     for (Channel channel : channels) {
 281                         if (getThing().getChannel(channel.getUID()) != null) {
 282                             thingBuilder.withoutChannel(channel.getUID());
 283                             nbRemoved++;
 284                         }
 285                     }
 286                     if (nbRemoved > 0) {
 287                         logger.debug("{} channels removed for the thing {} (from {} items)", nbRemoved,
 288                                 getThing().getUID(), items.size());
 289                     }
 290                     for (Channel channel : channels) {
 291                         thingBuilder.withChannel(channel);
 292                     }
 293                     updateThing(thingBuilder.build());
 294                     if (nbGroups > 0) {
 295                         logger.debug("{} channels added for the thing {} (from {} items including {} groups)",
 296                                 channels.size(), getThing().getUID(), items.size(), nbGroups);
 297                     } else {
 298                         logger.debug("{} channels added for the thing {} (from {} items)", channels.size(),
 299                                 getThing().getUID(), items.size());
 300                     }
 301                 }
 302                 return true;
 303             } catch (IllegalArgumentException e) {
 304                 logger.warn("An error occurred while creating the channels for the server {}: {}", getThing().getUID(),
 305                         e.getMessage());
 306                 return false;
 307             }
 308         }
 309     }
 310
 311     private void removeChannels(List<RemoteopenhabItem> items) {
 312         synchronized (updateThingLock) {
 313             int nbRemoved = 0;
 314             ThingBuilder thingBuilder = editThing();
 315             for (RemoteopenhabItem item : items) {
 316                 Channel channel = getThing().getChannel(item.name);
 317                 if (channel != null) {
 318                     thingBuilder.withoutChannel(channel.getUID());
 319                     nbRemoved++;
 320                 }
 321             }
 322             if (nbRemoved > 0) {
 323                 updateThing(thingBuilder.build());
 324                 logger.debug("{} channels removed for the thing {} (from {} items)", nbRemoved, getThing().getUID(),
 325                         items.size());
 326             }
 327         }
 328     }
 329
 330     private void setStateOptions(List<RemoteopenhabItem> items) {
 331         for (RemoteopenhabItem item : items) {
 332             Channel channel = getThing().getChannel(item.name);
 333             RemoteopenhabStateDescription descr = item.stateDescription;
 334             List<RemoteopenhabStateOption> options = descr == null ? null : descr.options;
 335             if (channel != null && options != null && options.size() > 0) {
 336                 List<StateOption> stateOptions = new ArrayList<>();
 337                 for (RemoteopenhabStateOption option : options) {
 338                     stateOptions.add(new StateOption(option.value, option.label));
 339                 }
 340                 stateDescriptionProvider.setStateOptions(channel.getUID(), stateOptions);
 341                 logger.trace("{} options set for the channel {}", options.size(), channel.getUID());
 342             }
 343         }
 344     }
 345
 346     public void checkConnection() {
 347         logger.debug("Try the root REST API...");
 348         try {
 349             restClient.tryApi();
 350             if (restClient.getRestApiVersion() == null) {
 351                 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR,
 352                         "OH 1.x server not supported by the binding");
 353             } else if (getThing().getStatus() != ThingStatus.ONLINE) {
 354                 List<RemoteopenhabItem> items = restClient.getRemoteItems("name,type,groupType,state,stateDescription");
 355
 356                 if (createChannels(items, true)) {
 357                     setStateOptions(items);
 358                     for (RemoteopenhabItem item : items) {
 359                         updateChannelState(item.name, null, item.state, false);
 360                     }
 361
 362                     updateStatus(ThingStatus.ONLINE);
 363
 364                     restartStreamingUpdates();
 365                 } else {
 366                     updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.NONE,
 367                             "Dynamic creation of the channels for the remote server items failed");
 368                     stopStreamingUpdates();
 369                 }
 370             }
 371         } catch (RemoteopenhabException e) {
 372             logger.debug("{}", e.getMessage());
 373             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, e.getMessage());
 374             stopStreamingUpdates();
 375         }
 376     }
 377
 378     private void startCheckConnectionJob(int accessibilityInterval, int aliveInterval) {
 379         ScheduledFuture<?> localCheckConnectionJob = checkConnectionJob;
 380         if (localCheckConnectionJob == null || localCheckConnectionJob.isCancelled()) {
 381             checkConnectionJob = scheduler.scheduleWithFixedDelay(() -> {
 382                 long millisSinceLastEvent = System.currentTimeMillis() - restClient.getLastEventTimestamp();
 383                 if (getThing().getStatus() != ThingStatus.ONLINE || aliveInterval == 0
 384                         || restClient.getLastEventTimestamp() == 0) {
 385                     logger.debug("Time to check server accessibility");
 386                     checkConnection();
 387                 } else if (millisSinceLastEvent > (aliveInterval * 60000)) {
 388                     logger.debug(
 389                             "Time to check server accessibility (maybe disconnected from streaming events, millisSinceLastEvent={})",
 390                             millisSinceLastEvent);
 391                     checkConnection();
 392                 } else {
 393                     logger.debug(
 394                             "Bypass server accessibility check (receiving streaming events, millisSinceLastEvent={})",
 395                             millisSinceLastEvent);
 396                 }
 397             }, accessibilityInterval, accessibilityInterval, TimeUnit.MINUTES);
 398         }
 399     }
 400
 401     private void stopCheckConnectionJob() {
 402         ScheduledFuture<?> localCheckConnectionJob = checkConnectionJob;
 403         if (localCheckConnectionJob != null) {
 404             localCheckConnectionJob.cancel(true);
 405             checkConnectionJob = null;
 406         }
 407     }
 408
 409     private void restartStreamingUpdates() {
 410         synchronized (restClient) {
 411             stopStreamingUpdates();
 412             startStreamingUpdates();
 413         }
 414     }
 415
 416     private void startStreamingUpdates() {
 417         synchronized (restClient) {
 418             restClient.addStreamingDataListener(this);
 419             restClient.addItemsDataListener(this);
 420             restClient.start();
 421         }
 422     }
 423
 424     private void stopStreamingUpdates() {
 425         stopStreamingUpdates(true);
 426     }
 427
 428     private void stopStreamingUpdates(boolean waitingForCompletion) {
 429         synchronized (restClient) {
 430             restClient.stop(waitingForCompletion);
 431             restClient.removeStreamingDataListener(this);
 432             restClient.removeItemsDataListener(this);
 433         }
 434     }
 435
 436     public RemoteopenhabRestClient gestRestClient() {
 437         return restClient;
 438     }
 439
 440     @Override
 441     public void onConnected() {
 442         updateStatus(ThingStatus.ONLINE);
 443     }
 444
 445     @Override
 446     public void onDisconnected() {
 447         updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, "Disconected from the remote server");
 448     }
 449
 450     @Override
 451     public void onError(String message) {
 452         updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, message);
 453     }
 454
 455     @Override
 456     public void onItemStateEvent(String itemName, String stateType, String state, boolean onlyIfStateChanged) {
 457         updateChannelState(itemName, stateType, state, onlyIfStateChanged);
 458     }
 459
 460     @Override
 461     public void onItemAdded(RemoteopenhabItem item) {
 462         createChannels(List.of(item), false);
 463     }
 464
 465     @Override
 466     public void onItemRemoved(RemoteopenhabItem item) {
 467         removeChannels(List.of(item));
 468     }
 469
 470     @Override
 471     public void onItemUpdated(RemoteopenhabItem newItem, RemoteopenhabItem oldItem) {
 472         if (!newItem.type.equals(oldItem.type)) {
 473             createChannels(List.of(newItem), false);
 474         } else {
 475             logger.trace("Updated remote item {} ignored because item type {} is unchanged", newItem.name,
 476                     newItem.type);
 477         }
 478     }
 479
 480     private void updateChannelState(String itemName, @Nullable String stateType, String state,
 481             boolean onlyIfStateChanged) {
 482         Channel channel = getThing().getChannel(itemName);
 483         if (channel == null) {
 484             logger.trace("No channel for item {}", itemName);
 485             return;
 486         }
 487         String acceptedItemType = channel.getAcceptedItemType();
 488         if (acceptedItemType == null) {
 489             logger.trace("Channel without accepted item type for item {}", itemName);
 490             return;
 491         }
 492         if (!isLinked(channel.getUID())) {
 493             logger.trace("Unlinked channel {}", channel.getUID());
 494             return;
 495         }
 496         State channelState = null;
 497         try {
 498             if (stateType == null && "NULL".equals(state)) {
 499                 channelState = UnDefType.NULL;
 500             } else if (stateType == null && "UNDEF".equals(state)) {
 501                 channelState = UnDefType.UNDEF;
 502             } else if ("UnDef".equals(stateType)) {
 503                 switch (state) {
 504                     case "NULL":
 505                         channelState = UnDefType.NULL;
 506                         break;
 507                     case "UNDEF":
 508                         channelState = UnDefType.UNDEF;
 509                         break;
 510                     default:
 511                         logger.debug("Invalid UnDef value {} for item {}", state, itemName);
 512                         break;
 513                 }
 514             } else if (acceptedItemType.startsWith(CoreItemFactory.NUMBER + ":")) {
 515                 // Item type Number with dimension
 516                 if (stateType == null || "Quantity".equals(stateType)) {
 517                     List<Class<? extends State>> stateTypes = Collections.singletonList(QuantityType.class);
 518                     channelState = TypeParser.parseState(stateTypes, state);
 519                 } else if ("Decimal".equals(stateType)) {
 520                     channelState = new DecimalType(state);
 521                 } else {
 522                     logger.debug("Unexpected value type {} for item {}", stateType, itemName);
 523                 }
 524             } else {
 525                 switch (acceptedItemType) {
 526                     case CoreItemFactory.STRING:
 527                         if (checkStateType(itemName, stateType, "String")) {
 528                             channelState = new StringType(state);
 529                         }
 530                         break;
 531                     case CoreItemFactory.NUMBER:
 532                         if (checkStateType(itemName, stateType, "Decimal")) {
 533                             channelState = new DecimalType(state);
 534                         }
 535                         break;
 536                     case CoreItemFactory.SWITCH:
 537                         if (checkStateType(itemName, stateType, "OnOff")) {
 538                             channelState = "ON".equals(state) ? OnOffType.ON : OnOffType.OFF;
 539                         }
 540                         break;
 541                     case CoreItemFactory.CONTACT:
 542                         if (checkStateType(itemName, stateType, "OpenClosed")) {
 543                             channelState = "OPEN".equals(state) ? OpenClosedType.OPEN : OpenClosedType.CLOSED;
 544                         }
 545                         break;
 546                     case CoreItemFactory.DIMMER:
 547                         if (checkStateType(itemName, stateType, "Percent")) {
 548                             channelState = new PercentType(state);
 549                         }
 550                         break;
 551                     case CoreItemFactory.COLOR:
 552                         if (checkStateType(itemName, stateType, "HSB")) {
 553                             channelState = HSBType.valueOf(state);
 554                         }
 555                         break;
 556                     case CoreItemFactory.DATETIME:
 557                         if (checkStateType(itemName, stateType, "DateTime")) {
 558                             channelState = new DateTimeType(ZonedDateTime.parse(state, FORMATTER_DATE));
 559                         }
 560                         break;
 561                     case CoreItemFactory.LOCATION:
 562                         if (checkStateType(itemName, stateType, "Point")) {
 563                             channelState = new PointType(state);
 564                         }
 565                         break;
 566                     case CoreItemFactory.IMAGE:
 567                         if (checkStateType(itemName, stateType, "Raw")) {
 568                             channelState = RawType.valueOf(state);
 569                         }
 570                         break;
 571                     case CoreItemFactory.PLAYER:
 572                         if (checkStateType(itemName, stateType, "PlayPause")) {
 573                             switch (state) {
 574                                 case "PLAY":
 575                                     channelState = PlayPauseType.PLAY;
 576                                     break;
 577                                 case "PAUSE":
 578                                     channelState = PlayPauseType.PAUSE;
 579                                     break;
 580                                 default:
 581                                     logger.debug("Unexpected value {} for item {}", state, itemName);
 582                                     break;
 583                             }
 584                         }
 585                         break;
 586                     case CoreItemFactory.ROLLERSHUTTER:
 587                         if (checkStateType(itemName, stateType, "Percent")) {
 588                             channelState = new PercentType(state);
 589                         }
 590                         break;
 591                     default:
 592                         logger.debug("Item type {} is not yet supported", acceptedItemType);
 593                         break;
 594                 }
 595             }
 596         } catch (IllegalArgumentException | DateTimeException e) {
 597             logger.warn("Failed to parse state \"{}\" for item {}: {}", state, itemName, e.getMessage());
 598             channelState = UnDefType.UNDEF;
 599         }
 600         if (channelState != null) {
 601             if (onlyIfStateChanged && channelState.equals(channelsLastStates.get(channel.getUID()))) {
 602                 logger.trace("ItemStateChangedEvent ignored for item {} as state is identical to the last state",
 603                         itemName);
 604                 return;
 605             }
 606             channelsLastStates.put(channel.getUID(), channelState);
 607             updateState(channel.getUID(), channelState);
 608             String channelStateStr = channelState.toFullString();
 609             logger.debug("updateState {} with {}", channel.getUID(),
 610                     channelStateStr.length() < MAX_STATE_SIZE_FOR_LOGGING ? channelStateStr
 611                             : channelStateStr.substring(0, MAX_STATE_SIZE_FOR_LOGGING) + "...");
 612         }
 613     }
 614
 615     private boolean checkStateType(String itemName, @Nullable String stateType, String expectedType) {
 616         if (stateType != null && !expectedType.equals(stateType)) {
 617             logger.debug("Unexpected value type {} for item {}", stateType, itemName);
 618             return false;
 619         } else {
 620             return true;
 621         }
 622     }
 623
 624     @Override
 625     public Collection<Class<? extends ThingHandlerService>> getServices() {
 626         return Collections.singleton(RemoteopenhabDiscoveryService.class);
 627     }
 628 }