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   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.miio.internal.handler;
  14
  15 import static org.openhab.binding.miio.internal.MiIoBindingConstants.*;
  16
  17 import java.io.IOException;
  18 import java.time.LocalDateTime;
  19 import java.util.HashMap;
  20 import java.util.Map;
  21 import java.util.concurrent.ConcurrentHashMap;
  22 import java.util.concurrent.ScheduledExecutorService;
  23 import java.util.concurrent.ScheduledFuture;
  24 import java.util.concurrent.ScheduledThreadPoolExecutor;
  25 import java.util.concurrent.TimeUnit;
  26
  27 import org.eclipse.jdt.annotation.NonNullByDefault;
  28 import org.eclipse.jdt.annotation.Nullable;
  29 import org.openhab.binding.miio.internal.Message;
  30 import org.openhab.binding.miio.internal.MiIoBindingConfiguration;
  31 import org.openhab.binding.miio.internal.MiIoCommand;
  32 import org.openhab.binding.miio.internal.MiIoCrypto;
  33 import org.openhab.binding.miio.internal.MiIoCryptoException;
  34 import org.openhab.binding.miio.internal.MiIoDevices;
  35 import org.openhab.binding.miio.internal.MiIoInfoDTO;
  36 import org.openhab.binding.miio.internal.MiIoMessageListener;
  37 import org.openhab.binding.miio.internal.MiIoSendCommand;
  38 import org.openhab.binding.miio.internal.Utils;
  39 import org.openhab.binding.miio.internal.basic.MiIoDatabaseWatchService;
  40 import org.openhab.binding.miio.internal.cloud.CloudConnector;
  41 import org.openhab.binding.miio.internal.transport.MiIoAsyncCommunication;
  42 import org.openhab.core.cache.ExpiringCache;
  43 import org.openhab.core.common.NamedThreadFactory;
  44 import org.openhab.core.config.core.Configuration;
  45 import org.openhab.core.library.types.DecimalType;
  46 import org.openhab.core.library.types.StringType;
  47 import org.openhab.core.thing.ChannelUID;
  48 import org.openhab.core.thing.Thing;
  49 import org.openhab.core.thing.ThingStatus;
  50 import org.openhab.core.thing.ThingStatusDetail;
  51 import org.openhab.core.thing.ThingTypeUID;
  52 import org.openhab.core.thing.binding.BaseThingHandler;
  53 import org.openhab.core.thing.binding.builder.ThingBuilder;
  54 import org.openhab.core.types.Command;
  55 import org.slf4j.Logger;
  56 import org.slf4j.LoggerFactory;
  57
  58 import com.google.gson.Gson;
  59 import com.google.gson.GsonBuilder;
  60 import com.google.gson.JsonObject;
  61 import com.google.gson.JsonParser;
  62
  63 /**
  64  * The {@link MiIoAbstractHandler} is responsible for handling commands, which are
  65  * sent to one of the channels.
  66  *
  67  * @author Marcel Verpaalen - Initial contribution
  68  */
  69 @NonNullByDefault
  70 public abstract class MiIoAbstractHandler extends BaseThingHandler implements MiIoMessageListener {
  71     protected static final int MAX_QUEUE = 5;
  72     protected static final Gson GSON = new GsonBuilder().create();
  73
  74     protected ScheduledExecutorService miIoScheduler = scheduler;
  75     protected @Nullable ScheduledFuture<?> pollingJob;
  76     protected MiIoDevices miDevice = MiIoDevices.UNKNOWN;
  77     protected boolean isIdentified;
  78
  79     protected final JsonParser parser = new JsonParser();
  80     protected byte[] token = new byte[0];
  81
  82     protected @Nullable MiIoBindingConfiguration configuration;
  83     protected @Nullable MiIoAsyncCommunication miioCom;
  84     protected CloudConnector cloudConnector;
  85     protected String cloudServer = "";
  86     protected int lastId;
  87
  88     protected Map<Integer, String> cmds = new ConcurrentHashMap<>();
  89     protected Map<String, Object> deviceVariables = new HashMap<>();
  90     protected final ExpiringCache<String> network = new ExpiringCache<>(CACHE_EXPIRY_NETWORK, () -> {
  91         int ret = sendCommand(MiIoCommand.MIIO_INFO);
  92         if (ret != 0) {
  93             return "id:" + ret;
  94         }
  95         return "failed";
  96     });;
  97     protected static final long CACHE_EXPIRY = TimeUnit.SECONDS.toMillis(5);
  98     protected static final long CACHE_EXPIRY_NETWORK = TimeUnit.SECONDS.toMillis(60);
  99
 100     private final Logger logger = LoggerFactory.getLogger(MiIoAbstractHandler.class);
 101     protected MiIoDatabaseWatchService miIoDatabaseWatchService;
 102
 103     public MiIoAbstractHandler(Thing thing, MiIoDatabaseWatchService miIoDatabaseWatchService,
 104             CloudConnector cloudConnector) {
 105         super(thing);
 106         this.miIoDatabaseWatchService = miIoDatabaseWatchService;
 107         this.cloudConnector = cloudConnector;
 108     }
 109
 110     @Override
 111     public abstract void handleCommand(ChannelUID channelUID, Command command);
 112
 113     protected boolean handleCommandsChannels(ChannelUID channelUID, Command command) {
 114         if (channelUID.getId().equals(CHANNEL_COMMAND)) {
 115             cmds.put(sendCommand(command.toString(), ""), command.toString());
 116             return true;
 117         }
 118         if (channelUID.getId().equals(CHANNEL_RPC)) {
 119             cmds.put(sendCommand(command.toString(), cloudServer), command.toString());
 120             return true;
 121         }
 122         return false;
 123     }
 124
 125     @Override
 126     public void initialize() {
 127         logger.debug("Initializing Mi IO device handler '{}' with thingType {}", getThing().getUID(),
 128                 getThing().getThingTypeUID());
 129
 130         ScheduledThreadPoolExecutor miIoScheduler = new ScheduledThreadPoolExecutor(3,
 131                 new NamedThreadFactory(getThing().getUID().getAsString(), true));
 132         miIoScheduler.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
 133         miIoScheduler.setRemoveOnCancelPolicy(true);
 134         this.miIoScheduler = miIoScheduler;
 135
 136         final MiIoBindingConfiguration configuration = getConfigAs(MiIoBindingConfiguration.class);
 137         this.configuration = configuration;
 138         if (configuration.host == null || configuration.host.isEmpty()) {
 139             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR,
 140                     "IP address required. Configure IP address");
 141             return;
 142         }
 143         if (!tokenCheckPass(configuration.token)) {
 144             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR, "Token required. Configure token");
 145             return;
 146         }
 147         cloudServer = (configuration.cloudServer != null) ? configuration.cloudServer : "";
 148         isIdentified = false;
 149         miIoScheduler.schedule(this::initializeData, 1, TimeUnit.SECONDS);
 150         int pollingPeriod = configuration.refreshInterval;
 151         if (pollingPeriod > 0) {
 152             pollingJob = miIoScheduler.scheduleWithFixedDelay(() -> {
 153                 try {
 154                     updateData();
 155                 } catch (Exception e) {
 156                     logger.debug("Unexpected error during refresh.", e);
 157                 }
 158             }, 10, pollingPeriod, TimeUnit.SECONDS);
 159             logger.debug("Polling job scheduled to run every {} sec. for '{}'", pollingPeriod, getThing().getUID());
 160         } else {
 161             logger.debug("Polling job disabled. for '{}'", getThing().getUID());
 162             miIoScheduler.schedule(this::updateData, 10, TimeUnit.SECONDS);
 163         }
 164         updateStatus(ThingStatus.OFFLINE);
 165     }
 166
 167     private boolean tokenCheckPass(@Nullable String tokenSting) {
 168         if (tokenSting == null) {
 169             return false;
 170         }
 171         switch (tokenSting.length()) {
 172             case 16:
 173                 token = tokenSting.getBytes();
 174                 return true;
 175             case 32:
 176                 if (!IGNORED_TOKENS.contains(tokenSting)) {
 177                     token = Utils.hexStringToByteArray(tokenSting);
 178                     return true;
 179                 }
 180                 return false;
 181             case 96:
 182                 try {
 183                     token = Utils.hexStringToByteArray(MiIoCrypto.decryptToken(Utils.hexStringToByteArray(tokenSting)));
 184                     logger.debug("IOS token decrypted to {}", Utils.getHex(token));
 185                 } catch (MiIoCryptoException e) {
 186                     logger.warn("Could not decrypt token {}{}", tokenSting, e.getMessage());
 187                     return false;
 188                 }
 189                 return true;
 190             default:
 191                 return false;
 192         }
 193     }
 194
 195     @Override
 196     public void dispose() {
 197         logger.debug("Disposing Xiaomi Mi IO handler '{}'", getThing().getUID());
 198         miIoScheduler.shutdown();
 199         final ScheduledFuture<?> pollingJob = this.pollingJob;
 200         if (pollingJob != null) {
 201             pollingJob.cancel(true);
 202             this.pollingJob = null;
 203         }
 204         final @Nullable MiIoAsyncCommunication miioCom = this.miioCom;
 205         if (miioCom != null) {
 206             lastId = miioCom.getId();
 207             miioCom.unregisterListener(this);
 208             miioCom.close();
 209             this.miioCom = null;
 210         }
 211         miIoScheduler.shutdownNow();
 212     }
 213
 214     protected int sendCommand(MiIoCommand command) {
 215         return sendCommand(command, "[]");
 216     }
 217
 218     protected int sendCommand(MiIoCommand command, String params) {
 219         try {
 220             final MiIoAsyncCommunication connection = getConnection();
 221             return (connection != null) ? connection.queueCommand(command, params, getCloudServer()) : 0;
 222         } catch (MiIoCryptoException | IOException e) {
 223             logger.debug("Command {} for {} failed (type: {}): {}", command.toString(), getThing().getUID(),
 224                     getThing().getThingTypeUID(), e.getLocalizedMessage());
 225         }
 226         return 0;
 227     }
 228
 229     protected int sendCommand(String commandString) {
 230         return sendCommand(commandString, getCloudServer());
 231     }
 232
 233     /**
 234      * This is used to execute arbitrary commands by sending to the commands channel. Command parameters to be added
 235      * between
 236      * [] brackets. This to allow for unimplemented commands to be executed (e.g. get detailed historical cleaning
 237      * records)
 238      *
 239      * @param commandString command to be executed
 240      * @param cloud server to be used or empty string for direct sending to the device
 241      * @return vacuum response
 242      */
 243     protected int sendCommand(String commandString, String cloudServer) {
 244         final MiIoAsyncCommunication connection = getConnection();
 245         try {
 246             String command = commandString.trim();
 247             String param = "[]";
 248             int sb = command.indexOf("[");
 249             int cb = command.indexOf("{");
 250             if (Math.max(sb, cb) > 0) {
 251                 int loc = (Math.min(sb, cb) > 0 ? Math.min(sb, cb) : Math.max(sb, cb));
 252                 param = command.substring(loc).trim();
 253                 command = command.substring(0, loc).trim();
 254             }
 255             return (connection != null) ? connection.queueCommand(command, param, cloudServer) : 0;
 256         } catch (MiIoCryptoException | IOException e) {
 257             disconnected(e.getMessage());
 258         }
 259         return 0;
 260     }
 261
 262     String getCloudServer() {
 263         // This can be improved in the future with additional / more advanced options like e.g. directFirst which would
 264         // use direct communications and in case of failures fall back to cloud communication. For now we keep it
 265         // simple and only have the option for cloud or direct.
 266         final MiIoBindingConfiguration configuration = this.configuration;
 267         if (configuration != null && configuration.communication != null) {
 268             return configuration.communication.equals("cloud") ? cloudServer : "";
 269         }
 270         return "";
 271     }
 272
 273     protected boolean skipUpdate() {
 274         final MiIoAsyncCommunication miioCom = this.miioCom;
 275         if (!hasConnection() || miioCom == null) {
 276             logger.debug("Skipping periodic update for '{}'. No Connection", getThing().getUID().toString());
 277             return true;
 278         }
 279         if (getThing().getStatusInfo().getStatusDetail().equals(ThingStatusDetail.CONFIGURATION_ERROR)) {
 280             logger.debug("Skipping periodic update for '{}'. Thing Status {}", getThing().getUID().toString(),
 281                     getThing().getStatusInfo().getStatusDetail());
 282             sendCommand(MiIoCommand.MIIO_INFO);
 283             return true;
 284         }
 285         if (miioCom.getQueueLength() > MAX_QUEUE) {
 286             logger.debug("Skipping periodic update for '{}'. {} elements in queue.", getThing().getUID().toString(),
 287                     miioCom.getQueueLength());
 288             return true;
 289         }
 290         return false;
 291     }
 292
 293     protected abstract void updateData();
 294
 295     protected boolean updateNetwork(JsonObject networkData) {
 296         try {
 297             updateState(CHANNEL_SSID, new StringType(networkData.getAsJsonObject("ap").get("ssid").getAsString()));
 298             updateState(CHANNEL_BSSID, new StringType(networkData.getAsJsonObject("ap").get("bssid").getAsString()));
 299             if (networkData.getAsJsonObject("ap").get("rssi") != null) {
 300                 updateState(CHANNEL_RSSI, new DecimalType(networkData.getAsJsonObject("ap").get("rssi").getAsLong()));
 301             } else if (networkData.getAsJsonObject("ap").get("wifi_rssi") != null) {
 302                 updateState(CHANNEL_RSSI,
 303                         new DecimalType(networkData.getAsJsonObject("ap").get("wifi_rssi").getAsLong()));
 304             } else {
 305                 logger.debug("No RSSI info in response");
 306             }
 307             updateState(CHANNEL_LIFE, new DecimalType(networkData.get("life").getAsLong()));
 308             return true;
 309         } catch (Exception e) {
 310             logger.debug("Could not parse network response: {}", networkData, e);
 311         }
 312         return false;
 313     }
 314
 315     protected boolean hasConnection() {
 316         return getConnection() != null;
 317     }
 318
 319     protected void disconnectedNoResponse() {
 320         disconnected("No Response from device");
 321     }
 322
 323     protected void disconnected(@Nullable String message) {
 324         updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.OFFLINE.COMMUNICATION_ERROR,
 325                 message != null ? message : "");
 326         final MiIoAsyncCommunication miioCom = this.miioCom;
 327         if (miioCom != null) {
 328             lastId = miioCom.getId();
 329             lastId += 10;
 330         }
 331     }
 332
 333     protected synchronized @Nullable MiIoAsyncCommunication getConnection() {
 334         if (miioCom != null) {
 335             return miioCom;
 336         }
 337         final MiIoBindingConfiguration configuration = getConfigAs(MiIoBindingConfiguration.class);
 338         if (configuration.host == null || configuration.host.isEmpty()) {
 339             return null;
 340         }
 341         @Nullable
 342         String deviceId = configuration.deviceId;
 343         try {
 344             if (deviceId != null && deviceId.length() == 8 && tokenCheckPass(configuration.token)) {
 345                 final MiIoAsyncCommunication miioCom = new MiIoAsyncCommunication(configuration.host, token,
 346                         Utils.hexStringToByteArray(deviceId), lastId, configuration.timeout, cloudConnector);
 347                 if (getCloudServer().isBlank()) {
 348                     logger.debug("Ping Mi device {} at {}", deviceId, configuration.host);
 349                     Message miIoResponse = miioCom.sendPing(configuration.host);
 350                     if (miIoResponse != null) {
 351                         logger.debug("Ping response from device {} at {}. Time stamp: {}, OH time {}, delta {}",
 352                                 Utils.getHex(miIoResponse.getDeviceId()), configuration.host,
 353                                 miIoResponse.getTimestamp(), LocalDateTime.now(), miioCom.getTimeDelta());
 354                         miioCom.registerListener(this);
 355                         this.miioCom = miioCom;
 356                         return miioCom;
 357                     } else {
 358                         miioCom.close();
 359                     }
 360                 } else {
 361                     miioCom.registerListener(this);
 362                     this.miioCom = miioCom;
 363                     return miioCom;
 364                 }
 365             } else {
 366                 logger.debug("No device ID defined. Retrieving Mi device ID");
 367                 final MiIoAsyncCommunication miioCom = new MiIoAsyncCommunication(configuration.host, token,
 368                         new byte[0], lastId, configuration.timeout, cloudConnector);
 369                 Message miIoResponse = miioCom.sendPing(configuration.host);
 370                 if (miIoResponse != null) {
 371                     logger.debug("Ping response from device {} at {}. Time stamp: {}, OH time {}, delta {}",
 372                             Utils.getHex(miIoResponse.getDeviceId()), configuration.host, miIoResponse.getTimestamp(),
 373                             LocalDateTime.now(), miioCom.getTimeDelta());
 374                     deviceId = Utils.getHex(miIoResponse.getDeviceId());
 375                     logger.debug("Ping response from device {} at {}. Time stamp: {}, OH time {}, delta {}", deviceId,
 376                             configuration.host, miIoResponse.getTimestamp(), LocalDateTime.now(),
 377                             miioCom.getTimeDelta());
 378                     miioCom.setDeviceId(miIoResponse.getDeviceId());
 379                     logger.debug("Using retrieved Mi device ID: {}", deviceId);
 380                     updateDeviceIdConfig(deviceId);
 381                     miioCom.registerListener(this);
 382                     this.miioCom = miioCom;
 383                     return miioCom;
 384                 } else {
 385                     miioCom.close();
 386                 }
 387             }
 388             logger.debug("Ping response from device {} at {} FAILED", configuration.deviceId, configuration.host);
 389             disconnectedNoResponse();
 390             return null;
 391         } catch (IOException e) {
 392             logger.debug("Could not connect to {} at {}", getThing().getUID().toString(), configuration.host);
 393             disconnected(e.getMessage());
 394             return null;
 395         }
 396     }
 397
 398     private void updateDeviceIdConfig(String deviceId) {
 399         if (!deviceId.isEmpty()) {
 400             updateProperty(Thing.PROPERTY_SERIAL_NUMBER, deviceId);
 401             Configuration config = editConfiguration();
 402             config.put(PROPERTY_DID, deviceId);
 403             updateConfiguration(config);
 404         } else {
 405             logger.debug("Could not update config with device ID: {}", deviceId);
 406         }
 407     }
 408
 409     protected boolean initializeData() {
 410         this.miioCom = getConnection();
 411         return true;
 412     }
 413
 414     protected void refreshNetwork() {
 415         network.getValue();
 416     }
 417
 418     protected void defineDeviceType(JsonObject miioInfo) {
 419         updateProperties(miioInfo);
 420         isIdentified = updateThingType(miioInfo);
 421     }
 422
 423     private void updateProperties(JsonObject miioInfo) {
 424         final MiIoInfoDTO info = GSON.fromJson(miioInfo, MiIoInfoDTO.class);
 425         Map<String, String> properties = editProperties();
 426         if (info.model != null) {
 427             properties.put(Thing.PROPERTY_MODEL_ID, info.model);
 428         }
 429         if (info.fwVer != null) {
 430             properties.put(Thing.PROPERTY_FIRMWARE_VERSION, info.fwVer);
 431         }
 432         if (info.hwVer != null) {
 433             properties.put(Thing.PROPERTY_HARDWARE_VERSION, info.hwVer);
 434         }
 435         if (info.wifiFwVer != null) {
 436             properties.put("wifiFirmware", info.wifiFwVer);
 437         }
 438         if (info.mcuFwVer != null) {
 439             properties.put("mcuFirmware", info.mcuFwVer);
 440         }
 441         deviceVariables.putAll(properties);
 442         updateProperties(properties);
 443     }
 444
 445     protected boolean updateThingType(JsonObject miioInfo) {
 446         MiIoBindingConfiguration configuration = getConfigAs(MiIoBindingConfiguration.class);
 447         String model = miioInfo.get("model").getAsString();
 448         miDevice = MiIoDevices.getType(model);
 449         if (configuration.model == null || configuration.model.isEmpty()) {
 450             Configuration config = editConfiguration();
 451             config.put(PROPERTY_MODEL, model);
 452             updateConfiguration(config);
 453             configuration = getConfigAs(MiIoBindingConfiguration.class);
 454         }
 455         if (!configuration.model.equals(model)) {
 456             logger.info("Mi Device model {} has model config: {}. Unexpected unless manual override", model,
 457                     configuration.model);
 458         }
 459         if (miDevice.getThingType().equals(getThing().getThingTypeUID())
 460                 && !(miDevice.getThingType().equals(THING_TYPE_UNSUPPORTED)
 461                         && miIoDatabaseWatchService.getDatabaseUrl(model) != null)) {
 462             logger.debug("Mi Device model {} identified as: {}. Matches thingtype {}", model, miDevice.toString(),
 463                     miDevice.getThingType().toString());
 464             return true;
 465         } else {
 466             if (getThing().getThingTypeUID().equals(THING_TYPE_MIIO)
 467                     || getThing().getThingTypeUID().equals(THING_TYPE_UNSUPPORTED)) {
 468                 changeType(model);
 469             } else {
 470                 logger.info(
 471                         "Mi Device model {} identified as: {}, thingtype {}. Does not matches thingtype {}. Unexpected, unless manual override.",
 472                         miDevice.toString(), miDevice.getThingType(), getThing().getThingTypeUID().toString(),
 473                         miDevice.getThingType().toString());
 474                 return true;
 475             }
 476         }
 477         return false;
 478     }
 479
 480     /**
 481      * Changes the {@link org.openhab.core.thing.type.ThingType} to the right type once it is retrieved from
 482      * the device.
 483      *
 484      * @param modelId String with the model id
 485      */
 486     private void changeType(final String modelId) {
 487         final ScheduledFuture<?> pollingJob = this.pollingJob;
 488         if (pollingJob != null) {
 489             pollingJob.cancel(true);
 490             this.pollingJob = null;
 491         }
 492         miIoScheduler.schedule(() -> {
 493             String label = getThing().getLabel();
 494             if (label == null || label.startsWith("Xiaomi Mi Device")) {
 495                 ThingBuilder thingBuilder = editThing();
 496                 thingBuilder.withLabel(miDevice.getDescription());
 497                 updateThing(thingBuilder.build());
 498             }
 499             logger.info("Mi Device model {} identified as: {}. Does not match thingtype {}. Changing thingtype to {}",
 500                     modelId, miDevice.toString(), getThing().getThingTypeUID().toString(),
 501                     miDevice.getThingType().toString());
 502             ThingTypeUID thingTypeUID = MiIoDevices.getType(modelId).getThingType();
 503             if (thingTypeUID.equals(THING_TYPE_UNSUPPORTED)
 504                     && miIoDatabaseWatchService.getDatabaseUrl(modelId) != null) {
 505                 thingTypeUID = THING_TYPE_BASIC;
 506             }
 507             changeThingType(thingTypeUID, getConfig());
 508         }, 10, TimeUnit.SECONDS);
 509     }
 510
 511     @Override
 512     public void onStatusUpdated(ThingStatus status, ThingStatusDetail statusDetail) {
 513         updateStatus(status, statusDetail);
 514     }
 515
 516     @Override
 517     public void onMessageReceived(MiIoSendCommand response) {
 518         logger.debug("Received response for {} type: {}, result: {}, fullresponse: {}", getThing().getUID().getId(),
 519                 response.getCommand(), response.getResult(), response.getResponse());
 520         if (response.isError()) {
 521             logger.debug("Error received: {}", response.getResponse().get("error"));
 522             if (MiIoCommand.MIIO_INFO.equals(response.getCommand())) {
 523                 network.invalidateValue();
 524             }
 525             return;
 526         }
 527         try {
 528             switch (response.getCommand()) {
 529                 case MIIO_INFO:
 530                     if (!isIdentified) {
 531                         defineDeviceType(response.getResult().getAsJsonObject());
 532                     }
 533                     updateNetwork(response.getResult().getAsJsonObject());
 534                     break;
 535                 default:
 536                     break;
 537             }
 538             if (cmds.containsKey(response.getId())) {
 539                 if (response.getCloudServer().isBlank()) {
 540                     updateState(CHANNEL_COMMAND, new StringType(response.getResponse().toString()));
 541                 } else {
 542                     updateState(CHANNEL_RPC, new StringType(response.getResponse().toString()));
 543                 }
 544                 cmds.remove(response.getId());
 545             }
 546         } catch (Exception e) {
 547             logger.debug("Error while handing message {}", response.getResponse(), e);
 548         }
 549     }
 550 }