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   1 /**
   2  * Copyright (c) 2010-2024 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.homematic.internal.discovery;
  14
  15 import static org.openhab.binding.homematic.internal.HomematicBindingConstants.BINDING_ID;
  16
  17 import java.util.Set;
  18 import java.util.concurrent.ExecutionException;
  19 import java.util.concurrent.Future;
  20
  21 import org.eclipse.jdt.annotation.NonNull;
  22 import org.openhab.binding.homematic.internal.common.HomematicConfig;
  23 import org.openhab.binding.homematic.internal.communicator.HomematicGateway;
  24 import org.openhab.binding.homematic.internal.handler.HomematicBridgeHandler;
  25 import org.openhab.binding.homematic.internal.model.HmDevice;
  26 import org.openhab.binding.homematic.internal.type.UidUtils;
  27 import org.openhab.core.config.discovery.AbstractThingHandlerDiscoveryService;
  28 import org.openhab.core.config.discovery.DiscoveryResult;
  29 import org.openhab.core.config.discovery.DiscoveryResultBuilder;
  30 import org.openhab.core.thing.Thing;
  31 import org.openhab.core.thing.ThingStatus;
  32 import org.openhab.core.thing.ThingTypeUID;
  33 import org.openhab.core.thing.ThingUID;
  34 import org.osgi.service.component.annotations.Component;
  35 import org.osgi.service.component.annotations.ServiceScope;
  36 import org.slf4j.Logger;
  37 import org.slf4j.LoggerFactory;
  38
  39 /**
  40  * The {@link HomematicDeviceDiscoveryService} is used to discover devices that are connected to a Homematic gateway.
  41  *
  42  * @author Gerhard Riegler - Initial contribution
  43  */
  44 @Component(scope = ServiceScope.PROTOTYPE, service = HomematicDeviceDiscoveryService.class)
  45 public class HomematicDeviceDiscoveryService
  46         extends AbstractThingHandlerDiscoveryService<@NonNull HomematicBridgeHandler> {
  47     private final Logger logger = LoggerFactory.getLogger(HomematicDeviceDiscoveryService.class);
  48     private static final int DISCOVER_TIMEOUT_SECONDS = 300;
  49
  50     private Future<?> loadDevicesFuture;
  51     private volatile boolean isInInstallMode = false;
  52     private volatile Object installModeSync = new Object();
  53
  54     public HomematicDeviceDiscoveryService() {
  55         super(HomematicBridgeHandler.class, Set.of(new ThingTypeUID(BINDING_ID, "-")), DISCOVER_TIMEOUT_SECONDS, false);
  56     }
  57
  58     @Override
  59     public void initialize() {
  60         thingHandler.setDiscoveryService(this);
  61         super.initialize();
  62     }
  63
  64     @Override
  65     protected void startScan() {
  66         logger.debug("Starting Homematic discovery scan");
  67         enableInstallMode();
  68         loadDevices();
  69     }
  70
  71     /**
  72      * Will set controller in <i>installMode==true</i>, but only if the bridge
  73      * is ONLINE (e.g. not during INITIALIZATION).
  74      */
  75     private void enableInstallMode() {
  76         try {
  77             HomematicGateway gateway = thingHandler.getGateway();
  78             Thing bridge = thingHandler.getThing();
  79             ThingStatus bridgeStatus = bridge.getStatus();
  80
  81             if (ThingStatus.ONLINE == bridgeStatus) {
  82                 gateway.setInstallMode(true, getInstallModeDuration());
  83
  84                 int remaining = gateway.getInstallMode();
  85                 if (remaining > 0) {
  86                     setIsInInstallMode();
  87                     logger.debug("Successfully put controller in install mode. Remaining time: {} seconds", remaining);
  88                 } else {
  89                     logger.warn("Controller did not accept requested install mode");
  90                 }
  91             } else {
  92                 logger.debug("Will not attempt to set controller in install mode, because bridge is not ONLINE.");
  93             }
  94         } catch (Exception ex) {
  95             logger.warn("Failed to set Homematic controller in install mode", ex);
  96         }
  97     }
  98
  99     private int getInstallModeDuration() {
 100         return thingHandler.getThing().getConfiguration().as(HomematicConfig.class).getInstallModeDuration();
 101     }
 102
 103     @Override
 104     public int getScanTimeout() {
 105         return getInstallModeDuration();
 106     }
 107
 108     @Override
 109     public synchronized void stopScan() {
 110         logger.debug("Stopping Homematic discovery scan");
 111         disableInstallMode();
 112         thingHandler.getGateway().cancelLoadAllDeviceMetadata();
 113         waitForScanFinishing();
 114         super.stopScan();
 115     }
 116
 117     private void disableInstallMode() {
 118         try {
 119             synchronized (installModeSync) {
 120                 if (isInInstallMode) {
 121                     isInInstallMode = false;
 122                     installModeSync.notify();
 123                     thingHandler.getGateway().setInstallMode(false, 0);
 124                 }
 125             }
 126         } catch (Exception ex) {
 127             logger.warn("Failed to disable Homematic controller's install mode", ex);
 128         }
 129     }
 130
 131     private void setIsInInstallMode() {
 132         synchronized (installModeSync) {
 133             isInInstallMode = true;
 134         }
 135     }
 136
 137     private void waitForInstallModeFinished(int timeout) throws InterruptedException {
 138         synchronized (installModeSync) {
 139             while (isInInstallMode) {
 140                 installModeSync.wait(timeout);
 141             }
 142         }
 143     }
 144
 145     private void waitForLoadDevicesFinished() throws InterruptedException, ExecutionException {
 146         if (loadDevicesFuture != null) {
 147             loadDevicesFuture.get();
 148         }
 149     }
 150
 151     /**
 152      * Waits for the discovery scan to finish and then returns.
 153      */
 154     public void waitForScanFinishing() {
 155         logger.debug("Waiting for finishing Homematic device discovery scan");
 156         try {
 157             waitForInstallModeFinished(DISCOVER_TIMEOUT_SECONDS * 1000);
 158             waitForLoadDevicesFinished();
 159         } catch (ExecutionException | InterruptedException ex) {
 160             // ignore
 161         } catch (Exception ex) {
 162             logger.error("Error waiting for device discovery scan: {}", ex.getMessage(), ex);
 163         }
 164         HomematicBridgeHandler bridgeHandler = thingHandler;
 165         String gatewayId = bridgeHandler != null && bridgeHandler.getGateway() != null
 166                 ? bridgeHandler.getGateway().getId()
 167                 : "UNKNOWN";
 168         logger.debug("Finished Homematic device discovery scan on gateway '{}'", gatewayId);
 169     }
 170
 171     /**
 172      * Starts a thread which loads all Homematic devices connected to the gateway.
 173      */
 174     public void loadDevices() {
 175         if (loadDevicesFuture == null && thingHandler.getGateway() != null) {
 176             loadDevicesFuture = scheduler.submit(() -> {
 177                 try {
 178                     final HomematicGateway gateway = thingHandler.getGateway();
 179                     gateway.loadAllDeviceMetadata();
 180                     thingHandler.getTypeGenerator().validateFirmwares();
 181                 } catch (Throwable ex) {
 182                     logger.error("{}", ex.getMessage(), ex);
 183                 } finally {
 184                     loadDevicesFuture = null;
 185                     thingHandler.setOfflineStatus();
 186                     removeOlderResults(getTimestampOfLastScan());
 187                 }
 188             });
 189         } else {
 190             logger.debug("Homematic devices discovery scan in progress");
 191         }
 192     }
 193
 194     /**
 195      * Removes the Homematic device.
 196      */
 197     public void deviceRemoved(HmDevice device) {
 198         ThingUID thingUID = UidUtils.generateThingUID(device, thingHandler.getThing());
 199         thingRemoved(thingUID);
 200     }
 201
 202     /**
 203      * Generates the DiscoveryResult from a Homematic device.
 204      */
 205     public void deviceDiscovered(HmDevice device) {
 206         ThingUID bridgeUID = thingHandler.getThing().getUID();
 207         ThingTypeUID typeUid = UidUtils.generateThingTypeUID(device);
 208         ThingUID thingUID = new ThingUID(typeUid, bridgeUID, device.getAddress());
 209         String label = device.getName() != null ? device.getName() : device.getAddress();
 210         long timeToLive = thingHandler.getThing().getConfiguration().as(HomematicConfig.class).getDiscoveryTimeToLive();
 211
 212         DiscoveryResult discoveryResult = DiscoveryResultBuilder.create(thingUID).withBridge(bridgeUID).withLabel(label)
 213                 .withProperty(Thing.PROPERTY_SERIAL_NUMBER, device.getAddress())
 214                 .withRepresentationProperty(Thing.PROPERTY_SERIAL_NUMBER).withTTL(timeToLive).build();
 215         thingDiscovered(discoveryResult);
 216     }
 217 }