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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.openwebnet.internal.handler;
  14
  15 import static org.openhab.binding.openwebnet.internal.OpenWebNetBindingConstants.*;
  16
  17 import java.util.Set;
  18 import java.util.concurrent.TimeUnit;
  19
  20 import org.eclipse.jdt.annotation.NonNullByDefault;
  21 import org.eclipse.jdt.annotation.Nullable;
  22 import org.openhab.binding.openwebnet.internal.OpenWebNetBindingConstants;
  23 import org.openhab.core.library.types.IncreaseDecreaseType;
  24 import org.openhab.core.library.types.OnOffType;
  25 import org.openhab.core.library.types.PercentType;
  26 import org.openhab.core.thing.ChannelUID;
  27 import org.openhab.core.thing.Thing;
  28 import org.openhab.core.thing.ThingStatus;
  29 import org.openhab.core.thing.ThingTypeUID;
  30 import org.openhab.core.types.Command;
  31 import org.openwebnet4j.communication.OWNException;
  32 import org.openwebnet4j.communication.Response;
  33 import org.openwebnet4j.message.BaseOpenMessage;
  34 import org.openwebnet4j.message.FrameException;
  35 import org.openwebnet4j.message.Lighting;
  36 import org.openwebnet4j.message.What;
  37 import org.openwebnet4j.message.Where;
  38 import org.openwebnet4j.message.WhereLightAutom;
  39 import org.openwebnet4j.message.WhereZigBee;
  40 import org.openwebnet4j.message.Who;
  41 import org.slf4j.Logger;
  42 import org.slf4j.LoggerFactory;
  43
  44 /**
  45  * The {@link OpenWebNetLightingHandler} is responsible for handling commands/messages for a Lighting OpenWebNet device.
  46  * It extends the abstract {@link OpenWebNetThingHandler}.
  47  *
  48  * @author Massimo Valla - Initial contribution
  49  */
  50 @NonNullByDefault
  51 public class OpenWebNetLightingHandler extends OpenWebNetThingHandler {
  52
  53     private final Logger logger = LoggerFactory.getLogger(OpenWebNetLightingHandler.class);
  54
  55     public static final Set<ThingTypeUID> SUPPORTED_THING_TYPES = OpenWebNetBindingConstants.LIGHTING_SUPPORTED_THING_TYPES;
  56
  57     // interval to interpret ON as response to requestStatus
  58     private static final int BRIGHTNESS_STATUS_REQUEST_INTERVAL_MSEC = 250;
  59
  60     // time to wait before sending a statusRequest, to avoid repeated requests and ensure dimmer has reached its final
  61     // level
  62     private static final int BRIGHTNESS_STATUS_REQUEST_DELAY_MSEC = 900;
  63
  64     private static final int UNKNOWN_STATE = 1000;
  65
  66     private static long lastAllDevicesRefreshTS = -1; // timestamp when the last request for all device refresh was sent
  67                                                       // for this handler
  68
  69     protected static final int ALL_DEVICES_REFRESH_INTERVAL_MSEC = 60000; // interval in msec before sending another all
  70                                                                           // devices refresh request
  71
  72     private long lastBrightnessChangeSentTS = 0; // timestamp when last brightness change was sent to the device
  73
  74     private long lastStatusRequestSentTS = 0; // timestamp when last status request was sent to the device
  75
  76     private int brightness = UNKNOWN_STATE; // current brightness percent value for this device
  77
  78     private int brightnessBeforeOff = UNKNOWN_STATE; // latest brightness before device was set to off
  79
  80     private int sw[] = { UNKNOWN_STATE, UNKNOWN_STATE }; // current switch(es) state
  81
  82     public OpenWebNetLightingHandler(Thing thing) {
  83         super(thing);
  84     }
  85
  86     @Override
  87     protected void requestChannelState(ChannelUID channel) {
  88         logger.debug("requestChannelState() thingUID={} channel={}", thing.getUID(), channel.getId());
  89         requestStatus(channel.getId());
  90     }
  91
  92     /** helper method to request light status based on channel */
  93     private void requestStatus(String channelId) {
  94         Where w = deviceWhere;
  95         if (w != null) {
  96             try {
  97                 lastStatusRequestSentTS = System.currentTimeMillis();
  98                 Response res = send(Lighting.requestStatus(toWhere(channelId)));
  99                 if (res != null && res.isSuccess()) {
 100                     // set thing online, if not already
 101                     ThingStatus ts = getThing().getStatus();
 102                     if (ThingStatus.ONLINE != ts && ThingStatus.REMOVING != ts && ThingStatus.REMOVED != ts) {
 103                         updateStatus(ThingStatus.ONLINE);
 104                     }
 105                 }
 106             } catch (OWNException e) {
 107                 logger.warn("requestStatus() Exception while requesting light state: {}", e.getMessage());
 108             }
 109         } else {
 110             logger.warn("Could not requestStatus(): deviceWhere is null");
 111         }
 112     }
 113
 114     @Override
 115     protected void refreshDevice(boolean refreshAll) {
 116         OpenWebNetBridgeHandler brH = bridgeHandler;
 117         if (brH != null) {
 118             if (brH.isBusGateway() && refreshAll) {
 119                 long now = System.currentTimeMillis();
 120                 if (now - lastAllDevicesRefreshTS > ALL_DEVICES_REFRESH_INTERVAL_MSEC) {
 121                     try {
 122                         send(Lighting.requestStatus(WhereLightAutom.GENERAL.value()));
 123                         lastAllDevicesRefreshTS = now;
 124                     } catch (OWNException e) {
 125                         logger.warn("Excpetion while requesting all devices refresh: {}", e.getMessage());
 126                     }
 127                 } else {
 128                     logger.debug("Refresh all devices just sent...");
 129                 }
 130             } else { // USB or BUS-single device
 131                 ThingTypeUID thingType = thing.getThingTypeUID();
 132                 if (THING_TYPE_ZB_ON_OFF_SWITCH_2UNITS.equals(thingType)) {
 133                     // Unfortunately using USB Gateway OpenWebNet both switch endpoints cannot be requested at the same
 134                     // time using UNIT 00 because USB stick returns NACK, so we need to send a request status for both
 135                     // endpoints
 136                     requestStatus(CHANNEL_SWITCH_02);
 137                 }
 138                 requestStatus(""); // channel here does not make any difference, see {@link #toWhere()}
 139             }
 140         }
 141     }
 142
 143     @Override
 144     protected void handleChannelCommand(ChannelUID channel, Command command) {
 145         switch (channel.getId()) {
 146             case CHANNEL_BRIGHTNESS:
 147                 handleBrightnessCommand(command);
 148                 break;
 149             case CHANNEL_SWITCH:
 150             case CHANNEL_SWITCH_01:
 151             case CHANNEL_SWITCH_02:
 152                 handleSwitchCommand(channel, command);
 153                 break;
 154             default: {
 155                 logger.warn("Unsupported ChannelUID {}", channel);
 156             }
 157         }
 158     }
 159
 160     /**
 161      * Handles Lighting switch command for a channel
 162      *
 163      * @param channel the channel
 164      * @param command the command
 165      */
 166     private void handleSwitchCommand(ChannelUID channel, Command command) {
 167         logger.debug("handleSwitchCommand() (command={} - channel={})", command, channel);
 168         if (command instanceof OnOffType) {
 169             try {
 170                 if (OnOffType.ON.equals(command)) {
 171                     send(Lighting.requestTurnOn(toWhere(channel.getId())));
 172                 } else if (OnOffType.OFF.equals(command)) {
 173                     send(Lighting.requestTurnOff(toWhere(channel.getId())));
 174                 }
 175             } catch (OWNException e) {
 176                 logger.warn("Exception while processing command {}: {}", command, e.getMessage());
 177             }
 178         } else {
 179             logger.warn("Unsupported command: {}", command);
 180         }
 181     }
 182
 183     /**
 184      * Handles Lighting brightness command (xx%, INCREASE, DECREASE, ON, OFF)
 185      *
 186      * @param command the command
 187      */
 188     private void handleBrightnessCommand(Command command) {
 189         logger.debug("handleBrightnessCommand() command={}", command);
 190         if (command instanceof PercentType) {
 191             dimLightTo(((PercentType) command).intValue(), command);
 192         } else if (command instanceof IncreaseDecreaseType) {
 193             if (IncreaseDecreaseType.INCREASE.equals(command)) {
 194                 dimLightTo(brightness + 10, command);
 195             } else { // DECREASE
 196                 dimLightTo(brightness - 10, command);
 197             }
 198         } else if (command instanceof OnOffType) {
 199             if (OnOffType.ON.equals(command)) {
 200                 dimLightTo(brightnessBeforeOff, command);
 201             } else { // OFF
 202                 dimLightTo(0, command);
 203             }
 204         } else {
 205             logger.warn("Cannot handle command {} for thing {}", command, getThing().getUID());
 206         }
 207     }
 208
 209     /**
 210      * Helper method to dim light to given percent
 211      */
 212     private void dimLightTo(int percent, Command command) {
 213         logger.debug("   DIM dimLightTo({}) bri={} briBeforeOff={}", percent, brightness, brightnessBeforeOff);
 214         int newBrightness = percent;
 215         if (newBrightness == UNKNOWN_STATE) {
 216             // we do not know last brightness -> set dimmer to 100%
 217             newBrightness = 100;
 218         } else if (newBrightness <= 0) {
 219             newBrightness = 0;
 220             brightnessBeforeOff = brightness;
 221             logger.debug("   DIM saved bri before sending bri=0 command to device");
 222         } else if (newBrightness > 100) {
 223             newBrightness = 100;
 224         }
 225         What newBrightnessWhat = Lighting.percentToWhat(newBrightness);
 226         logger.debug("   DIM newBrightness={} newBrightnessWhat={}", newBrightness, newBrightnessWhat);
 227         @Nullable
 228         What brightnessWhat = null;
 229         if (brightness != UNKNOWN_STATE) {
 230             brightnessWhat = Lighting.percentToWhat(brightness);
 231         }
 232         if (brightnessWhat == null || !newBrightnessWhat.value().equals(brightnessWhat.value())) {
 233             logger.debug("   DIM brightnessWhat {} --> {}  WHAT level change needed", brightnessWhat,
 234                     newBrightnessWhat);
 235             Where w = deviceWhere;
 236             if (w != null) {
 237                 try {
 238                     lastBrightnessChangeSentTS = System.currentTimeMillis();
 239                     send(Lighting.requestDimTo(w.value(), newBrightnessWhat));
 240                 } catch (OWNException e) {
 241                     logger.warn("Exception while sending dimTo request for command {}: {}", command, e.getMessage());
 242                 }
 243             }
 244         } else {
 245             logger.debug("   DIM brightnessWhat {} --> {}  NO WHAT level change needed", brightnessWhat,
 246                     newBrightnessWhat);
 247         }
 248         brightness = newBrightness;
 249         updateState(CHANNEL_BRIGHTNESS, new PercentType(brightness));
 250         logger.debug("   DIM---END bri={} briBeforeOff={}", brightness, brightnessBeforeOff);
 251     }
 252
 253     @Override
 254     protected String ownIdPrefix() {
 255         return Who.LIGHTING.value().toString();
 256     }
 257
 258     @Override
 259     protected void handleMessage(BaseOpenMessage msg) {
 260         logger.debug("handleMessage({}) for thing: {}", msg, thing.getUID());
 261         super.handleMessage(msg);
 262         ThingTypeUID thingType = thing.getThingTypeUID();
 263         if (THING_TYPE_ZB_DIMMER.equals(thingType) || THING_TYPE_BUS_DIMMER.equals(thingType)) {
 264             updateBrightness((Lighting) msg);
 265         } else {
 266             updateOnOffState((Lighting) msg);
 267         }
 268     }
 269
 270     /**
 271      * Updates brightness based on OWN Lighting message received
 272      *
 273      * @param msg the Lighting message received
 274      */
 275     private synchronized void updateBrightness(Lighting msg) {
 276         logger.debug("  $BRI updateBrightness({})       || bri={} briBeforeOff={}", msg, brightness,
 277                 brightnessBeforeOff);
 278         long now = System.currentTimeMillis();
 279         long delta = now - lastBrightnessChangeSentTS;
 280         boolean belowThresh = delta < BRIGHTNESS_STATUS_REQUEST_DELAY_MSEC;
 281         logger.debug("  $BRI delta={}ms {}", delta, (belowThresh ? "< DELAY" : ""));
 282         if (belowThresh) {
 283             // we just sent a command from OH, so we can ignore this message from network
 284             logger.debug("  $BRI a command was sent {} < {} ms --> no action needed", delta,
 285                     BRIGHTNESS_STATUS_REQUEST_DELAY_MSEC);
 286         } else {
 287             if (msg.isOn()) {
 288                 // if we have not just sent a requestStatus, on ON event we send requestStatus to know current level
 289                 long deltaStatusReq = now - lastStatusRequestSentTS;
 290                 if (deltaStatusReq > BRIGHTNESS_STATUS_REQUEST_INTERVAL_MSEC) {
 291                     logger.debug("  $BRI 'ON' is new notification from network, scheduling requestStatus...");
 292                     // we must wait BRIGHTNESS_STATUS_REQUEST_DELAY_MSEC to be sure dimmer has reached its final level
 293                     scheduler.schedule(() -> {
 294                         requestStatus(CHANNEL_BRIGHTNESS);
 295                     }, BRIGHTNESS_STATUS_REQUEST_DELAY_MSEC, TimeUnit.MILLISECONDS);
 296                     return;
 297                 } else {
 298                     // otherwise we interpret this ON event as the requestStatus response event with level=1
 299                     // so we proceed to call updateBrightnessState()
 300                     logger.debug("  $BRI 'ON' is the requestStatus response level");
 301                 }
 302             }
 303             logger.debug("  $BRI update from network");
 304             if (msg.getWhat() != null) {
 305                 updateBrightnessState(msg);
 306             } else { // dimension notification
 307                 if (msg.getDim() == Lighting.DimLighting.DIMMER_LEVEL_100) {
 308                     int newBrightness;
 309                     try {
 310                         newBrightness = msg.parseDimmerLevel100();
 311                     } catch (FrameException fe) {
 312                         logger.warn("updateBrightness() Wrong value for dimmerLevel100 in message: {}", msg);
 313                         return;
 314                     }
 315                     logger.debug("  $BRI DIMMER_LEVEL_100 newBrightness={}", newBrightness);
 316                     updateState(CHANNEL_BRIGHTNESS, new PercentType(newBrightness));
 317                     if (newBrightness == 0) {
 318                         brightnessBeforeOff = brightness;
 319                     }
 320                     brightness = newBrightness;
 321                 } else {
 322                     logger.warn("updateBrightness() Cannot handle message {} for thing {}", msg, getThing().getUID());
 323                     return;
 324                 }
 325             }
 326         }
 327         logger.debug("  $BRI---END updateBrightness({}) || bri={} briBeforeOff={}", msg, brightness,
 328                 brightnessBeforeOff);
 329     }
 330
 331     /**
 332      * Updates light brightness state based on a OWN Lighting message
 333      *
 334      * @param msg the Lighting message received
 335      */
 336     private void updateBrightnessState(Lighting msg) {
 337         What w = msg.getWhat();
 338         if (w != null) {
 339             if (Lighting.WhatLighting.ON.equals(w)) {
 340                 w = Lighting.WhatLighting.DIMMER_LEVEL_2; // levels start at 2
 341             }
 342             int newBrightnessWhat = w.value();
 343             int brightnessWhat = UNKNOWN_STATE;
 344             if (brightness != UNKNOWN_STATE) {
 345                 brightnessWhat = Lighting.percentToWhat(brightness).value();
 346             }
 347             logger.debug("  $BRI brightnessWhat {} --> {}", brightnessWhat, newBrightnessWhat);
 348             if (brightnessWhat != newBrightnessWhat) {
 349                 int newBrightness = Lighting.levelToPercent(newBrightnessWhat);
 350                 updateState(CHANNEL_BRIGHTNESS, new PercentType(newBrightness));
 351                 if (msg.isOff()) {
 352                     brightnessBeforeOff = brightness;
 353                 }
 354                 brightness = newBrightness;
 355                 logger.debug("  $BRI brightness CHANGED to {}", brightness);
 356             } else {
 357                 logger.debug("  $BRI no change");
 358             }
 359         }
 360     }
 361
 362     /**
 363      * Updates light on/off state based on a OWN Lighting event message received
 364      *
 365      * @param msg the Lighting message received
 366      */
 367     private void updateOnOffState(Lighting msg) {
 368         OpenWebNetBridgeHandler brH = bridgeHandler;
 369         if (brH != null) {
 370             if (msg.isOn() || msg.isOff()) {
 371                 String channelId;
 372                 int switchId = 0;
 373                 if (brH.isBusGateway()) {
 374                     channelId = CHANNEL_SWITCH;
 375                 } else {
 376                     WhereZigBee w = (WhereZigBee) (msg.getWhere());
 377                     if (WhereZigBee.UNIT_02.equals(w.getUnit())) {
 378                         channelId = CHANNEL_SWITCH_02;
 379                         switchId = 1;
 380                     } else {
 381                         channelId = CHANNEL_SWITCH_01;
 382                     }
 383                 }
 384                 int currentSt = sw[switchId];
 385                 int newSt = (msg.isOn() ? 1 : 0);
 386                 if (newSt != currentSt) {
 387                     updateState(channelId, (newSt == 1 ? OnOffType.ON : OnOffType.OFF));
 388                     sw[switchId] = newSt;
 389                     logger.debug("  {} ONOFF CHANGED to {}", ownId, newSt);
 390                 } else {
 391                     logger.debug("  {} ONOFF no change", ownId);
 392                 }
 393             } else {
 394                 logger.debug("updateOnOffState() Ignoring unsupported WHAT for thing {}. Frame={}", getThing().getUID(),
 395                         msg.getFrameValue());
 396                 return;
 397             }
 398         }
 399     }
 400
 401     @Override
 402     protected Where buildBusWhere(String wStr) throws IllegalArgumentException {
 403         return new WhereLightAutom(wStr);
 404     }
 405
 406     /**
 407      * Returns a WHERE address string based on channelId string
 408      *
 409      * @param channelId the channelId string
 410      **/
 411     @Nullable
 412     private String toWhere(String channelId) {
 413         Where w = deviceWhere;
 414         if (w != null) {
 415             OpenWebNetBridgeHandler brH = bridgeHandler;
 416             if (brH != null) {
 417                 if (brH.isBusGateway()) {
 418                     return w.value();
 419                 } else if (channelId.equals(CHANNEL_SWITCH_02)) {
 420                     return ((WhereZigBee) w).valueWithUnit(WhereZigBee.UNIT_02);
 421                 } else { // CHANNEL_SWITCH_01 or other channels
 422                     return ((WhereZigBee) w).valueWithUnit(WhereZigBee.UNIT_01);
 423                 }
 424             }
 425         }
 426         return null;
 427     }
 428 }