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