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 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,state,stateDescription");
 335
 336                 createChannels(items, true);
 337                 setStateOptions(items);
 338                 for (RemoteopenhabItem item : items) {
 339                     updateChannelState(item.name, null, item.state, false);
 340                 }
 341
 342                 updateStatus(ThingStatus.ONLINE);
 343
 344                 restartStreamingUpdates();
 345             }
 346         } catch (RemoteopenhabException e) {
 347             logger.debug("{}", e.getMessage());
 348             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, e.getMessage());
 349             stopStreamingUpdates();
 350         }
 351     }
 352
 353     private void startCheckConnectionJob(int accessibilityInterval, int aliveInterval) {
 354         ScheduledFuture<?> localCheckConnectionJob = checkConnectionJob;
 355         if (localCheckConnectionJob == null || localCheckConnectionJob.isCancelled()) {
 356             checkConnectionJob = scheduler.scheduleWithFixedDelay(() -> {
 357                 long millisSinceLastEvent = System.currentTimeMillis() - restClient.getLastEventTimestamp();
 358                 if (aliveInterval == 0 || restClient.getLastEventTimestamp() == 0) {
 359                     logger.debug("Time to check server accessibility");
 360                     checkConnection();
 361                 } else if (millisSinceLastEvent > (aliveInterval * 60000)) {
 362                     logger.debug(
 363                             "Time to check server accessibility (maybe disconnected from streaming events, millisSinceLastEvent={})",
 364                             millisSinceLastEvent);
 365                     checkConnection();
 366                 } else {
 367                     logger.debug(
 368                             "Bypass server accessibility check (receiving streaming events, millisSinceLastEvent={})",
 369                             millisSinceLastEvent);
 370                 }
 371             }, accessibilityInterval, accessibilityInterval, TimeUnit.MINUTES);
 372         }
 373     }
 374
 375     private void stopCheckConnectionJob() {
 376         ScheduledFuture<?> localCheckConnectionJob = checkConnectionJob;
 377         if (localCheckConnectionJob != null) {
 378             localCheckConnectionJob.cancel(true);
 379             checkConnectionJob = null;
 380         }
 381     }
 382
 383     private void restartStreamingUpdates() {
 384         synchronized (restClient) {
 385             stopStreamingUpdates();
 386             startStreamingUpdates();
 387         }
 388     }
 389
 390     private void startStreamingUpdates() {
 391         synchronized (restClient) {
 392             restClient.addStreamingDataListener(this);
 393             restClient.addItemsDataListener(this);
 394             restClient.start();
 395         }
 396     }
 397
 398     private void stopStreamingUpdates() {
 399         synchronized (restClient) {
 400             restClient.stop();
 401             restClient.removeStreamingDataListener(this);
 402             restClient.removeItemsDataListener(this);
 403         }
 404     }
 405
 406     public RemoteopenhabRestClient gestRestClient() {
 407         return restClient;
 408     }
 409
 410     @Override
 411     public void onConnected() {
 412         updateStatus(ThingStatus.ONLINE);
 413     }
 414
 415     @Override
 416     public void onError(String message) {
 417         updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, message);
 418     }
 419
 420     @Override
 421     public void onItemStateEvent(String itemName, String stateType, String state, boolean onlyIfStateChanged) {
 422         updateChannelState(itemName, stateType, state, onlyIfStateChanged);
 423     }
 424
 425     @Override
 426     public void onItemAdded(RemoteopenhabItem item) {
 427         createChannels(List.of(item), false);
 428     }
 429
 430     @Override
 431     public void onItemRemoved(RemoteopenhabItem item) {
 432         removeChannels(List.of(item));
 433     }
 434
 435     @Override
 436     public void onItemUpdated(RemoteopenhabItem newItem, RemoteopenhabItem oldItem) {
 437         if (!newItem.type.equals(oldItem.type)) {
 438             createChannels(List.of(newItem), false);
 439         } else {
 440             logger.trace("Updated remote item {} ignored because item type {} is unchanged", newItem.name,
 441                     newItem.type);
 442         }
 443     }
 444
 445     private void updateChannelState(String itemName, @Nullable String stateType, String state,
 446             boolean onlyIfStateChanged) {
 447         Channel channel = getThing().getChannel(itemName);
 448         if (channel == null) {
 449             logger.trace("No channel for item {}", itemName);
 450             return;
 451         }
 452         String acceptedItemType = channel.getAcceptedItemType();
 453         if (acceptedItemType == null) {
 454             logger.trace("Channel without accepted item type for item {}", itemName);
 455             return;
 456         }
 457         if (!isLinked(channel.getUID())) {
 458             logger.trace("Unlinked channel {}", channel.getUID());
 459             return;
 460         }
 461         State channelState = null;
 462         if (stateType == null && "NULL".equals(state)) {
 463             channelState = UnDefType.NULL;
 464         } else if (stateType == null && "UNDEF".equals(state)) {
 465             channelState = UnDefType.UNDEF;
 466         } else if ("UnDef".equals(stateType)) {
 467             switch (state) {
 468                 case "NULL":
 469                     channelState = UnDefType.NULL;
 470                     break;
 471                 case "UNDEF":
 472                     channelState = UnDefType.UNDEF;
 473                     break;
 474                 default:
 475                     logger.debug("Invalid UnDef value {} for item {}", state, itemName);
 476                     break;
 477             }
 478         } else if (acceptedItemType.startsWith(CoreItemFactory.NUMBER + ":")) {
 479             // Item type Number with dimension
 480             if (stateType == null || "Quantity".equals(stateType)) {
 481                 List<Class<? extends State>> stateTypes = Collections.singletonList(QuantityType.class);
 482                 channelState = TypeParser.parseState(stateTypes, state);
 483             } else if ("Decimal".equals(stateType)) {
 484                 channelState = new DecimalType(state);
 485             } else {
 486                 logger.debug("Unexpected value type {} for item {}", stateType, itemName);
 487             }
 488         } else {
 489             switch (acceptedItemType) {
 490                 case CoreItemFactory.STRING:
 491                     if (checkStateType(itemName, stateType, "String")) {
 492                         channelState = new StringType(state);
 493                     }
 494                     break;
 495                 case CoreItemFactory.NUMBER:
 496                     if (checkStateType(itemName, stateType, "Decimal")) {
 497                         channelState = new DecimalType(state);
 498                     }
 499                     break;
 500                 case CoreItemFactory.SWITCH:
 501                     if (checkStateType(itemName, stateType, "OnOff")) {
 502                         channelState = "ON".equals(state) ? OnOffType.ON : OnOffType.OFF;
 503                     }
 504                     break;
 505                 case CoreItemFactory.CONTACT:
 506                     if (checkStateType(itemName, stateType, "OpenClosed")) {
 507                         channelState = "OPEN".equals(state) ? OpenClosedType.OPEN : OpenClosedType.CLOSED;
 508                     }
 509                     break;
 510                 case CoreItemFactory.DIMMER:
 511                     if (checkStateType(itemName, stateType, "Percent")) {
 512                         channelState = new PercentType(state);
 513                     }
 514                     break;
 515                 case CoreItemFactory.COLOR:
 516                     if (checkStateType(itemName, stateType, "HSB")) {
 517                         channelState = HSBType.valueOf(state);
 518                     }
 519                     break;
 520                 case CoreItemFactory.DATETIME:
 521                     if (checkStateType(itemName, stateType, "DateTime")) {
 522                         try {
 523                             channelState = new DateTimeType(ZonedDateTime.parse(state, FORMATTER_DATE));
 524                         } catch (DateTimeParseException e) {
 525                             logger.debug("Failed to parse date {} for item {}", state, itemName);
 526                             channelState = null;
 527                         }
 528                     }
 529                     break;
 530                 case CoreItemFactory.LOCATION:
 531                     if (checkStateType(itemName, stateType, "Point")) {
 532                         channelState = new PointType(state);
 533                     }
 534                     break;
 535                 case CoreItemFactory.IMAGE:
 536                     if (checkStateType(itemName, stateType, "Raw")) {
 537                         channelState = RawType.valueOf(state);
 538                     }
 539                     break;
 540                 case CoreItemFactory.PLAYER:
 541                     if (checkStateType(itemName, stateType, "PlayPause")) {
 542                         switch (state) {
 543                             case "PLAY":
 544                                 channelState = PlayPauseType.PLAY;
 545                                 break;
 546                             case "PAUSE":
 547                                 channelState = PlayPauseType.PAUSE;
 548                                 break;
 549                             default:
 550                                 logger.debug("Unexpected value {} for item {}", state, itemName);
 551                                 break;
 552                         }
 553                     }
 554                     break;
 555                 case CoreItemFactory.ROLLERSHUTTER:
 556                     if (checkStateType(itemName, stateType, "Percent")) {
 557                         channelState = new PercentType(state);
 558                     }
 559                     break;
 560                 default:
 561                     logger.debug("Item type {} is not yet supported", acceptedItemType);
 562                     break;
 563             }
 564         }
 565         if (channelState != null) {
 566             if (onlyIfStateChanged && channelState.equals(channelsLastStates.get(channel.getUID()))) {
 567                 logger.trace("ItemStateChangedEvent ignored for item {} as state is identical to the last state",
 568                         itemName);
 569                 return;
 570             }
 571             channelsLastStates.put(channel.getUID(), channelState);
 572             updateState(channel.getUID(), channelState);
 573             String channelStateStr = channelState.toFullString();
 574             logger.debug("updateState {} with {}", channel.getUID(),
 575                     channelStateStr.length() < MAX_STATE_SIZE_FOR_LOGGING ? channelStateStr
 576                             : channelStateStr.substring(0, MAX_STATE_SIZE_FOR_LOGGING) + "...");
 577         }
 578     }
 579
 580     private boolean checkStateType(String itemName, @Nullable String stateType, String expectedType) {
 581         if (stateType != null && !expectedType.equals(stateType)) {
 582             logger.debug("Unexpected value type {} for item {}", stateType, itemName);
 583             return false;
 584         } else {
 585             return true;
 586         }
 587     }
 588
 589     @Override
 590     public Collection<Class<? extends ThingHandlerService>> getServices() {
 591         return Collections.singleton(RemoteopenhabDiscoveryService.class);
 592     }
 593 }