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

   1 /**
   2  * Copyright (c) 2010-2022 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.hdpowerview.internal.handler;
  14
  15 import static org.openhab.binding.hdpowerview.internal.HDPowerViewBindingConstants.*;
  16 import static org.openhab.binding.hdpowerview.internal.api.CoordinateSystem.*;
  17
  18 import java.util.HashMap;
  19 import java.util.List;
  20 import java.util.Map;
  21 import java.util.StringJoiner;
  22 import java.util.concurrent.ScheduledFuture;
  23 import java.util.concurrent.TimeUnit;
  24
  25 import javax.ws.rs.NotSupportedException;
  26
  27 import org.eclipse.jdt.annotation.NonNullByDefault;
  28 import org.eclipse.jdt.annotation.Nullable;
  29 import org.openhab.binding.hdpowerview.internal.HDPowerViewBindingConstants;
  30 import org.openhab.binding.hdpowerview.internal.HDPowerViewWebTargets;
  31 import org.openhab.binding.hdpowerview.internal.api.CoordinateSystem;
  32 import org.openhab.binding.hdpowerview.internal.api.Firmware;
  33 import org.openhab.binding.hdpowerview.internal.api.ShadePosition;
  34 import org.openhab.binding.hdpowerview.internal.api.SurveyData;
  35 import org.openhab.binding.hdpowerview.internal.api.responses.Shades.ShadeData;
  36 import org.openhab.binding.hdpowerview.internal.config.HDPowerViewShadeConfiguration;
  37 import org.openhab.binding.hdpowerview.internal.database.ShadeCapabilitiesDatabase;
  38 import org.openhab.binding.hdpowerview.internal.database.ShadeCapabilitiesDatabase.Capabilities;
  39 import org.openhab.binding.hdpowerview.internal.exceptions.HubException;
  40 import org.openhab.binding.hdpowerview.internal.exceptions.HubInvalidResponseException;
  41 import org.openhab.binding.hdpowerview.internal.exceptions.HubMaintenanceException;
  42 import org.openhab.binding.hdpowerview.internal.exceptions.HubProcessingException;
  43 import org.openhab.binding.hdpowerview.internal.exceptions.HubShadeTimeoutException;
  44 import org.openhab.core.library.types.DecimalType;
  45 import org.openhab.core.library.types.OnOffType;
  46 import org.openhab.core.library.types.PercentType;
  47 import org.openhab.core.library.types.QuantityType;
  48 import org.openhab.core.library.types.StopMoveType;
  49 import org.openhab.core.library.types.StringType;
  50 import org.openhab.core.library.types.UpDownType;
  51 import org.openhab.core.library.unit.Units;
  52 import org.openhab.core.thing.Bridge;
  53 import org.openhab.core.thing.ChannelUID;
  54 import org.openhab.core.thing.Thing;
  55 import org.openhab.core.thing.ThingStatus;
  56 import org.openhab.core.thing.ThingStatusDetail;
  57 import org.openhab.core.types.Command;
  58 import org.openhab.core.types.RefreshType;
  59 import org.openhab.core.types.UnDefType;
  60 import org.slf4j.Logger;
  61 import org.slf4j.LoggerFactory;
  62
  63 /**
  64  * Handles commands for an HD PowerView Shade
  65  *
  66  * @author Andy Lintner - Initial contribution
  67  * @author Andrew Fiddian-Green - Added support for secondary rail positions
  68  */
  69 @NonNullByDefault
  70 public class HDPowerViewShadeHandler extends AbstractHubbedThingHandler {
  71
  72     private enum RefreshKind {
  73         POSITION,
  74         SURVEY,
  75         BATTERY_LEVEL
  76     }
  77
  78     private static final String COMMAND_CALIBRATE = "CALIBRATE";
  79     private static final String COMMAND_IDENTIFY = "IDENTIFY";
  80
  81     private static final String DETECTED_SECONDARY_RAIL = "secondaryRailDetected";
  82     private static final String DETECTED_TILT_ANYWHERE = "tiltAnywhereDetected";
  83     private final Map<String, String> detectedCapabilities = new HashMap<>();
  84
  85     private final Logger logger = LoggerFactory.getLogger(HDPowerViewShadeHandler.class);
  86     private final ShadeCapabilitiesDatabase db = new ShadeCapabilitiesDatabase();
  87
  88     private @Nullable ScheduledFuture<?> refreshPositionFuture = null;
  89     private @Nullable ScheduledFuture<?> refreshSignalFuture = null;
  90     private @Nullable ScheduledFuture<?> refreshBatteryLevelFuture = null;
  91     private @Nullable Capabilities capabilities;
  92     private int shadeId;
  93     private boolean isDisposing;
  94
  95     public HDPowerViewShadeHandler(Thing thing) {
  96         super(thing);
  97     }
  98
  99     @Override
 100     public void initialize() {
 101         isDisposing = false;
 102         shadeId = getConfigAs(HDPowerViewShadeConfiguration.class).id;
 103         logger.debug("Initializing shade handler for shade {}", shadeId);
 104         Bridge bridge = getBridge();
 105         if (bridge == null) {
 106             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR,
 107                     "@text/offline.conf-error.invalid-bridge-handler");
 108             return;
 109         }
 110
 111         updateStatus(ThingStatus.UNKNOWN);
 112     }
 113
 114     @Override
 115     public void dispose() {
 116         logger.debug("Disposing shade handler for shade {}", shadeId);
 117         isDisposing = true;
 118         ScheduledFuture<?> future = refreshPositionFuture;
 119         if (future != null) {
 120             future.cancel(true);
 121         }
 122         refreshPositionFuture = null;
 123         future = refreshSignalFuture;
 124         if (future != null) {
 125             future.cancel(true);
 126         }
 127         refreshSignalFuture = null;
 128         future = refreshBatteryLevelFuture;
 129         if (future != null) {
 130             future.cancel(true);
 131         }
 132         refreshBatteryLevelFuture = null;
 133         capabilities = null;
 134     }
 135
 136     @Override
 137     public void handleCommand(ChannelUID channelUID, Command command) {
 138         String channelId = channelUID.getId();
 139
 140         if (RefreshType.REFRESH == command) {
 141             switch (channelId) {
 142                 case CHANNEL_SHADE_POSITION:
 143                 case CHANNEL_SHADE_SECONDARY_POSITION:
 144                 case CHANNEL_SHADE_VANE:
 145                     requestRefreshShadePosition();
 146                     break;
 147                 case CHANNEL_SHADE_LOW_BATTERY:
 148                 case CHANNEL_SHADE_BATTERY_LEVEL:
 149                 case CHANNEL_SHADE_BATTERY_VOLTAGE:
 150                     requestRefreshShadeBatteryLevel();
 151                     break;
 152                 case CHANNEL_SHADE_SIGNAL_STRENGTH:
 153                 case CHANNEL_SHADE_HUB_RSSI:
 154                 case CHANNEL_SHADE_REPEATER_RSSI:
 155                     requestRefreshShadeSurvey();
 156                     break;
 157             }
 158             return;
 159         }
 160
 161         HDPowerViewHubHandler bridge = getBridgeHandler();
 162         if (bridge == null) {
 163             logger.warn("Missing bridge handler");
 164             return;
 165         }
 166         HDPowerViewWebTargets webTargets = bridge.getWebTargets();
 167         try {
 168             handleShadeCommand(channelId, command, webTargets, shadeId);
 169         } catch (HubInvalidResponseException e) {
 170             Throwable cause = e.getCause();
 171             if (cause == null) {
 172                 logger.warn("Bridge returned a bad JSON response: {}", e.getMessage());
 173             } else {
 174                 logger.warn("Bridge returned a bad JSON response: {} -> {}", e.getMessage(), cause.getMessage());
 175             }
 176         } catch (HubMaintenanceException e) {
 177             // exceptions are logged in HDPowerViewWebTargets
 178         } catch (HubShadeTimeoutException e) {
 179             logger.warn("Shade {} timeout when sending command {}", shadeId, command);
 180         } catch (HubException e) {
 181             // ScheduledFutures will be cancelled by dispose(), naturally causing InterruptedException in invoke()
 182             // for any ongoing requests. Logging this would only cause confusion.
 183             if (!isDisposing) {
 184                 logger.warn("Unexpected error: {}", e.getMessage());
 185             }
 186         }
 187     }
 188
 189     private void handleShadeCommand(String channelId, Command command, HDPowerViewWebTargets webTargets, int shadeId)
 190             throws HubInvalidResponseException, HubProcessingException, HubMaintenanceException,
 191             HubShadeTimeoutException {
 192         switch (channelId) {
 193             case CHANNEL_SHADE_POSITION:
 194                 if (command instanceof PercentType) {
 195                     moveShade(PRIMARY_POSITION, ((PercentType) command).intValue(), webTargets, shadeId);
 196                 } else if (command instanceof UpDownType) {
 197                     moveShade(PRIMARY_POSITION, UpDownType.UP == command ? 0 : 100, webTargets, shadeId);
 198                 } else if (command instanceof StopMoveType) {
 199                     if (StopMoveType.STOP == command) {
 200                         stopShade(webTargets, shadeId);
 201                     } else {
 202                         logger.warn("Unexpected StopMoveType command");
 203                     }
 204                 }
 205                 break;
 206
 207             case CHANNEL_SHADE_VANE:
 208                 if (command instanceof PercentType) {
 209                     moveShade(VANE_TILT_POSITION, ((PercentType) command).intValue(), webTargets, shadeId);
 210                 } else if (command instanceof OnOffType) {
 211                     moveShade(VANE_TILT_POSITION, OnOffType.ON == command ? 100 : 0, webTargets, shadeId);
 212                 }
 213                 break;
 214
 215             case CHANNEL_SHADE_SECONDARY_POSITION:
 216                 if (command instanceof PercentType) {
 217                     moveShade(SECONDARY_POSITION, ((PercentType) command).intValue(), webTargets, shadeId);
 218                 } else if (command instanceof UpDownType) {
 219                     moveShade(SECONDARY_POSITION, UpDownType.UP == command ? 0 : 100, webTargets, shadeId);
 220                 } else if (command instanceof StopMoveType) {
 221                     if (StopMoveType.STOP == command) {
 222                         stopShade(webTargets, shadeId);
 223                     } else {
 224                         logger.warn("Unexpected StopMoveType command");
 225                     }
 226                 }
 227                 break;
 228
 229             case CHANNEL_SHADE_COMMAND:
 230                 if (command instanceof StringType) {
 231                     if (COMMAND_IDENTIFY.equals(((StringType) command).toString())) {
 232                         logger.debug("Identify shade {}", shadeId);
 233                         identifyShade(webTargets, shadeId);
 234                     } else if (COMMAND_CALIBRATE.equals(((StringType) command).toString())) {
 235                         logger.debug("Calibrate shade {}", shadeId);
 236                         calibrateShade(webTargets, shadeId);
 237                     }
 238                 } else {
 239                     logger.warn("Unsupported command: {}. Supported commands are: " + COMMAND_CALIBRATE, command);
 240                 }
 241                 break;
 242         }
 243     }
 244
 245     /**
 246      * Update the state of the channels based on the ShadeData provided.
 247      *
 248      * @param shadeData the ShadeData to be used.
 249      */
 250     protected void onReceiveUpdate(ShadeData shadeData) {
 251         updateStatus(ThingStatus.ONLINE);
 252         updateCapabilities(shadeData);
 253         updateSoftProperties(shadeData);
 254         updateFirmwareProperties(shadeData);
 255         ShadePosition shadePosition = shadeData.positions;
 256         if (shadePosition != null) {
 257             updatePositionStates(shadePosition);
 258         }
 259         updateBatteryStates(shadeData.batteryStatus, shadeData.batteryStrength);
 260         updateSignalStrengthState(shadeData.signalStrength);
 261     }
 262
 263     private void updateCapabilities(ShadeData shade) {
 264         if (capabilities != null) {
 265             // Already cached.
 266             return;
 267         }
 268         Capabilities capabilities = db.getCapabilities(shade.type, shade.capabilities);
 269         if (capabilities.getValue() < 0) {
 270             logger.debug("Unable to set capabilities for shade {}", shade.id);
 271             return;
 272         }
 273         logger.debug("Caching capabilities {} for shade {}", capabilities.getValue(), shade.id);
 274         this.capabilities = capabilities;
 275     }
 276
 277     private Capabilities getCapabilitiesOrDefault() {
 278         Capabilities capabilities = this.capabilities;
 279         if (capabilities == null) {
 280             return new Capabilities();
 281         }
 282         return capabilities;
 283     }
 284
 285     /**
 286      * Update the Thing's properties based on the contents of the provided ShadeData.
 287      *
 288      * Checks the database of known Shade 'types' and 'capabilities' and logs any unknown or incompatible values, so
 289      * that developers can be kept updated about the potential need to add support for that type resp. capabilities.
 290      *
 291      * @param shadeData
 292      */
 293     private void updateSoftProperties(ShadeData shadeData) {
 294         final Map<String, String> properties = getThing().getProperties();
 295         boolean propChanged = false;
 296
 297         // update 'type' property
 298         final int type = shadeData.type;
 299         String propKey = HDPowerViewBindingConstants.PROPERTY_SHADE_TYPE;
 300         String propOldVal = properties.getOrDefault(propKey, "");
 301         String propNewVal = db.getType(type).toString();
 302         if (!propNewVal.equals(propOldVal)) {
 303             propChanged = true;
 304             getThing().setProperty(propKey, propNewVal);
 305             if ((type > 0) && !db.isTypeInDatabase(type)) {
 306                 db.logTypeNotInDatabase(type);
 307             }
 308         }
 309
 310         // update 'capabilities' property
 311         Capabilities capabilities = db.getCapabilities(shadeData.capabilities);
 312         final int capabilitiesVal = capabilities.getValue();
 313         propKey = HDPowerViewBindingConstants.PROPERTY_SHADE_CAPABILITIES;
 314         propOldVal = properties.getOrDefault(propKey, "");
 315         propNewVal = capabilities.toString();
 316         if (!propNewVal.equals(propOldVal)) {
 317             propChanged = true;
 318             getThing().setProperty(propKey, propNewVal);
 319             if ((capabilitiesVal >= 0) && !db.isCapabilitiesInDatabase(capabilitiesVal)) {
 320                 db.logCapabilitiesNotInDatabase(type, capabilitiesVal);
 321             }
 322         }
 323
 324         if (propChanged && db.isCapabilitiesInDatabase(capabilitiesVal) && db.isTypeInDatabase(type)
 325                 && (capabilitiesVal != db.getType(type).getCapabilities()) && (shadeData.capabilities != null)) {
 326             db.logCapabilitiesMismatch(type, capabilitiesVal);
 327         }
 328     }
 329
 330     private void updateFirmwareProperties(ShadeData shadeData) {
 331         Map<String, String> properties = editProperties();
 332         Firmware shadeFirmware = shadeData.firmware;
 333         Firmware motorFirmware = shadeData.motor;
 334         if (shadeFirmware != null) {
 335             properties.put(Thing.PROPERTY_FIRMWARE_VERSION, shadeFirmware.toString());
 336         }
 337         if (motorFirmware != null) {
 338             properties.put(PROPERTY_MOTOR_FIRMWARE_VERSION, motorFirmware.toString());
 339         }
 340         updateProperties(properties);
 341     }
 342
 343     /**
 344      * After a hard refresh, update the Thing's detected capabilities based on the contents of the provided ShadeData.
 345      *
 346      * Checks if the secondary support capabilities in the database of known Shade 'types' and 'capabilities' matches
 347      * that implied by the ShadeData and logs any incompatible values, so that developers can be kept updated about the
 348      * potential need to add support for that type resp. capabilities.
 349      *
 350      * @param shadeData
 351      */
 352     private void updateDetectedCapabilities(ShadeData shadeData) {
 353         final ShadePosition positions = shadeData.positions;
 354         if (positions == null) {
 355             return;
 356         }
 357         Capabilities capabilities = getCapabilitiesOrDefault();
 358
 359         // update 'secondary rail' detected capability
 360         String capsKey = DETECTED_SECONDARY_RAIL;
 361         String capsOldVal = detectedCapabilities.getOrDefault(capsKey, "");
 362         boolean capsNewBool = positions.secondaryRailDetected();
 363         String capsNewVal = String.valueOf(capsNewBool);
 364         if (!capsNewVal.equals(capsOldVal)) {
 365             detectedCapabilities.put(capsKey, capsNewVal);
 366             if (capsNewBool != capabilities.supportsSecondary()) {
 367                 db.logPropertyMismatch(capsKey, shadeData.type, capabilities.getValue(), capsNewBool);
 368             }
 369         }
 370
 371         // update 'tilt anywhere' detected capability
 372         capsKey = DETECTED_TILT_ANYWHERE;
 373         capsOldVal = detectedCapabilities.getOrDefault(capsKey, "");
 374         capsNewBool = positions.tiltAnywhereDetected();
 375         capsNewVal = String.valueOf(capsNewBool);
 376         if (!capsNewVal.equals(capsOldVal)) {
 377             detectedCapabilities.put(capsKey, capsNewVal);
 378             if (capsNewBool != capabilities.supportsTiltAnywhere()) {
 379                 db.logPropertyMismatch(capsKey, shadeData.type, capabilities.getValue(), capsNewBool);
 380             }
 381         }
 382     }
 383
 384     private void updatePositionStates(ShadePosition shadePos) {
 385         Capabilities capabilities = this.capabilities;
 386         if (capabilities == null) {
 387             logger.debug("The 'shadeCapabilities' field has not yet been initialized");
 388             updateState(CHANNEL_SHADE_POSITION, UnDefType.UNDEF);
 389             updateState(CHANNEL_SHADE_VANE, UnDefType.UNDEF);
 390             updateState(CHANNEL_SHADE_SECONDARY_POSITION, UnDefType.UNDEF);
 391             return;
 392         }
 393         updateState(CHANNEL_SHADE_POSITION, shadePos.getState(capabilities, PRIMARY_POSITION));
 394         updateState(CHANNEL_SHADE_VANE, shadePos.getState(capabilities, VANE_TILT_POSITION));
 395         updateState(CHANNEL_SHADE_SECONDARY_POSITION, shadePos.getState(capabilities, SECONDARY_POSITION));
 396     }
 397
 398     private void updateBatteryStates(int batteryStatus, double batteryStrength) {
 399         updateBatteryLevelStates(batteryStatus);
 400         updateState(CHANNEL_SHADE_BATTERY_VOLTAGE,
 401                 batteryStrength > 0 ? new QuantityType<>(batteryStrength / 10, Units.VOLT) : UnDefType.UNDEF);
 402     }
 403
 404     private void updateBatteryLevelStates(int batteryStatus) {
 405         int mappedValue;
 406         switch (batteryStatus) {
 407             case 1: // Low
 408                 mappedValue = 10;
 409                 break;
 410             case 2: // Medium
 411                 mappedValue = 50;
 412                 break;
 413             case 3: // High
 414             case 4: // Plugged in
 415                 mappedValue = 100;
 416                 break;
 417             default: // No status available (0) or invalid
 418                 updateState(CHANNEL_SHADE_LOW_BATTERY, UnDefType.UNDEF);
 419                 updateState(CHANNEL_SHADE_BATTERY_LEVEL, UnDefType.UNDEF);
 420                 return;
 421         }
 422         updateState(CHANNEL_SHADE_LOW_BATTERY, batteryStatus == 1 ? OnOffType.ON : OnOffType.OFF);
 423         updateState(CHANNEL_SHADE_BATTERY_LEVEL, new DecimalType(mappedValue));
 424     }
 425
 426     private void updateSignalStrengthState(int signalStrength) {
 427         updateState(CHANNEL_SHADE_SIGNAL_STRENGTH, new DecimalType(signalStrength));
 428     }
 429
 430     private void moveShade(CoordinateSystem coordSys, int newPercent, HDPowerViewWebTargets webTargets, int shadeId)
 431             throws HubInvalidResponseException, HubProcessingException, HubMaintenanceException,
 432             HubShadeTimeoutException {
 433         ShadePosition newPosition = null;
 434         // (try to) read the positions from the hub
 435         ShadeData shadeData = webTargets.getShade(shadeId);
 436         updateCapabilities(shadeData);
 437         newPosition = shadeData.positions;
 438         // if no positions returned, then create a new position
 439         if (newPosition == null) {
 440             newPosition = new ShadePosition();
 441         }
 442         Capabilities capabilities = getCapabilitiesOrDefault();
 443         // set the new position value, and write the positions to the hub
 444         shadeData = webTargets.moveShade(shadeId, newPosition.setPosition(capabilities, coordSys, newPercent));
 445         updateShadePositions(shadeData);
 446     }
 447
 448     private void stopShade(HDPowerViewWebTargets webTargets, int shadeId) throws HubInvalidResponseException,
 449             HubProcessingException, HubMaintenanceException, HubShadeTimeoutException {
 450         updateShadePositions(webTargets.stopShade(shadeId));
 451         // Positions in response from stop motion is not updated to to actual positions yet,
 452         // so we need to request hard refresh.
 453         requestRefreshShadePosition();
 454     }
 455
 456     private void identifyShade(HDPowerViewWebTargets webTargets, int shadeId) throws HubInvalidResponseException,
 457             HubProcessingException, HubMaintenanceException, HubShadeTimeoutException {
 458         updateShadePositions(webTargets.jogShade(shadeId));
 459     }
 460
 461     private void calibrateShade(HDPowerViewWebTargets webTargets, int shadeId) throws HubInvalidResponseException,
 462             HubProcessingException, HubMaintenanceException, HubShadeTimeoutException {
 463         updateShadePositions(webTargets.calibrateShade(shadeId));
 464     }
 465
 466     private void updateShadePositions(ShadeData shadeData) {
 467         ShadePosition shadePosition = shadeData.positions;
 468         if (shadePosition == null) {
 469             return;
 470         }
 471         updateCapabilities(shadeData);
 472         updatePositionStates(shadePosition);
 473     }
 474
 475     /**
 476      * Request that the shade shall undergo a 'hard' refresh for querying its current position
 477      */
 478     protected synchronized void requestRefreshShadePosition() {
 479         if (refreshPositionFuture == null) {
 480             refreshPositionFuture = scheduler.schedule(this::doRefreshShadePosition, 0, TimeUnit.SECONDS);
 481         }
 482     }
 483
 484     /**
 485      * Request that the shade shall undergo a 'hard' refresh for querying its survey data
 486      */
 487     protected synchronized void requestRefreshShadeSurvey() {
 488         if (refreshSignalFuture == null) {
 489             refreshSignalFuture = scheduler.schedule(this::doRefreshShadeSignal, 0, TimeUnit.SECONDS);
 490         }
 491     }
 492
 493     /**
 494      * Request that the shade shall undergo a 'hard' refresh for querying its battery level state
 495      */
 496     protected synchronized void requestRefreshShadeBatteryLevel() {
 497         if (refreshBatteryLevelFuture == null) {
 498             refreshBatteryLevelFuture = scheduler.schedule(this::doRefreshShadeBatteryLevel, 0, TimeUnit.SECONDS);
 499         }
 500     }
 501
 502     private void doRefreshShadePosition() {
 503         this.doRefreshShade(RefreshKind.POSITION);
 504         refreshPositionFuture = null;
 505     }
 506
 507     private void doRefreshShadeSignal() {
 508         this.doRefreshShade(RefreshKind.SURVEY);
 509         refreshSignalFuture = null;
 510     }
 511
 512     private void doRefreshShadeBatteryLevel() {
 513         this.doRefreshShade(RefreshKind.BATTERY_LEVEL);
 514         refreshBatteryLevelFuture = null;
 515     }
 516
 517     private void doRefreshShade(RefreshKind kind) {
 518         try {
 519             HDPowerViewHubHandler bridge;
 520             if ((bridge = getBridgeHandler()) == null) {
 521                 throw new HubProcessingException("Missing bridge handler");
 522             }
 523             HDPowerViewWebTargets webTargets = bridge.getWebTargets();
 524             ShadeData shadeData;
 525             switch (kind) {
 526                 case POSITION:
 527                     shadeData = webTargets.refreshShadePosition(shadeId);
 528                     updateShadePositions(shadeData);
 529                     updateDetectedCapabilities(shadeData);
 530                     break;
 531                 case SURVEY:
 532                     List<SurveyData> surveyData = webTargets.getShadeSurvey(shadeId);
 533                     if (!surveyData.isEmpty()) {
 534                         if (logger.isDebugEnabled()) {
 535                             StringJoiner joiner = new StringJoiner(", ");
 536                             surveyData.forEach(data -> joiner.add(data.toString()));
 537                             logger.debug("Survey response for shade {}: {}", shadeId, joiner.toString());
 538                         }
 539
 540                         int hubRssi = Integer.MAX_VALUE;
 541                         int repeaterRssi = Integer.MAX_VALUE;
 542                         for (SurveyData survey : surveyData) {
 543                             if (survey.neighborId == 0) {
 544                                 hubRssi = survey.rssi;
 545                             } else {
 546                                 repeaterRssi = survey.rssi;
 547                             }
 548                         }
 549                         updateState(CHANNEL_SHADE_HUB_RSSI, hubRssi == Integer.MAX_VALUE ? UnDefType.UNDEF
 550                                 : new QuantityType<>(hubRssi, Units.DECIBEL_MILLIWATTS));
 551                         updateState(CHANNEL_SHADE_REPEATER_RSSI, repeaterRssi == Integer.MAX_VALUE ? UnDefType.UNDEF
 552                                 : new QuantityType<>(repeaterRssi, Units.DECIBEL_MILLIWATTS));
 553
 554                         shadeData = webTargets.getShade(shadeId);
 555                         updateSignalStrengthState(shadeData.signalStrength);
 556                     } else {
 557                         logger.info("No data from shade {} survey", shadeId);
 558                         /*
 559                          * Setting signal strength channel to UNDEF here would be reverted on next poll,
 560                          * since signal strength is part of shade response. So leaving current value,
 561                          * even though refreshing the value failed.
 562                          */
 563                         updateState(CHANNEL_SHADE_HUB_RSSI, UnDefType.UNDEF);
 564                         updateState(CHANNEL_SHADE_REPEATER_RSSI, UnDefType.UNDEF);
 565                     }
 566                     break;
 567                 case BATTERY_LEVEL:
 568                     shadeData = webTargets.refreshShadeBatteryLevel(shadeId);
 569                     updateBatteryStates(shadeData.batteryStatus, shadeData.batteryStrength);
 570                     break;
 571                 default:
 572                     throw new NotSupportedException("Unsupported refresh kind " + kind.toString());
 573             }
 574         } catch (HubInvalidResponseException e) {
 575             Throwable cause = e.getCause();
 576             if (cause == null) {
 577                 logger.warn("Bridge returned a bad JSON response: {}", e.getMessage());
 578             } else {
 579                 logger.warn("Bridge returned a bad JSON response: {} -> {}", e.getMessage(), cause.getMessage());
 580             }
 581             // Survey calls are unreliable and often returns "{}" as payload. For repeater RSSI tracking to be useful,
 582             // we need to reset channels also in this case.
 583             if (kind == RefreshKind.SURVEY) {
 584                 updateState(CHANNEL_SHADE_HUB_RSSI, UnDefType.UNDEF);
 585                 updateState(CHANNEL_SHADE_REPEATER_RSSI, UnDefType.UNDEF);
 586             }
 587         } catch (HubMaintenanceException e) {
 588             // exceptions are logged in HDPowerViewWebTargets
 589         } catch (HubShadeTimeoutException e) {
 590             logger.info("Shade {} wireless refresh time out", shadeId);
 591         } catch (HubException e) {
 592             // ScheduledFutures will be cancelled by dispose(), naturally causing InterruptedException in invoke()
 593             // for any ongoing requests. Logging this would only cause confusion.
 594             if (!isDisposing) {
 595                 logger.warn("Unexpected error: {}", e.getMessage());
 596             }
 597         }
 598     }
 599 }