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   1 /**
   2  * Copyright (c) 2010-2020 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.volvooncall.internal;
  14
  15 import static org.openhab.binding.volvooncall.internal.VolvoOnCallBindingConstants.*;
  16
  17 import java.util.HashMap;
  18 import java.util.Hashtable;
  19 import java.util.Map;
  20
  21 import org.eclipse.jdt.annotation.NonNullByDefault;
  22 import org.eclipse.jdt.annotation.Nullable;
  23 import org.openhab.binding.volvooncall.internal.discovery.VolvoOnCallDiscoveryService;
  24 import org.openhab.binding.volvooncall.internal.handler.VehicleHandler;
  25 import org.openhab.binding.volvooncall.internal.handler.VehicleStateDescriptionProvider;
  26 import org.openhab.binding.volvooncall.internal.handler.VolvoOnCallBridgeHandler;
  27 import org.openhab.core.config.discovery.DiscoveryService;
  28 import org.openhab.core.thing.Bridge;
  29 import org.openhab.core.thing.Thing;
  30 import org.openhab.core.thing.ThingTypeUID;
  31 import org.openhab.core.thing.ThingUID;
  32 import org.openhab.core.thing.binding.BaseThingHandlerFactory;
  33 import org.openhab.core.thing.binding.ThingHandler;
  34 import org.openhab.core.thing.binding.ThingHandlerFactory;
  35 import org.osgi.framework.ServiceRegistration;
  36 import org.osgi.service.component.annotations.Activate;
  37 import org.osgi.service.component.annotations.Component;
  38 import org.osgi.service.component.annotations.Reference;
  39 import org.slf4j.Logger;
  40 import org.slf4j.LoggerFactory;
  41
  42 /**
  43  * The {@link VolvoOnCallHandlerFactory} is responsible for creating things and thing
  44  * handlers.
  45  *
  46  * @author Gaël L'hopital - Initial contribution
  47  */
  48 @NonNullByDefault
  49 @Component(configurationPid = "binding.volvooncall", service = ThingHandlerFactory.class)
  50 public class VolvoOnCallHandlerFactory extends BaseThingHandlerFactory {
  51     private final Logger logger = LoggerFactory.getLogger(VolvoOnCallHandlerFactory.class);
  52     private final Map<ThingUID, ServiceRegistration<?>> discoveryServiceRegs = new HashMap<>();
  53     private final VehicleStateDescriptionProvider stateDescriptionProvider;
  54
  55     @Activate
  56     public VolvoOnCallHandlerFactory(@Reference VehicleStateDescriptionProvider provider) {
  57         this.stateDescriptionProvider = provider;
  58     }
  59
  60     @Override
  61     public boolean supportsThingType(ThingTypeUID thingTypeUID) {
  62         return SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID);
  63     }
  64
  65     @Override
  66     protected @Nullable ThingHandler createHandler(Thing thing) {
  67         ThingTypeUID thingTypeUID = thing.getThingTypeUID();
  68         if (APIBRIDGE_THING_TYPE.equals(thingTypeUID)) {
  69             VolvoOnCallBridgeHandler bridgeHandler = new VolvoOnCallBridgeHandler((Bridge) thing);
  70             registerDeviceDiscoveryService(bridgeHandler);
  71             return bridgeHandler;
  72         } else if (VEHICLE_THING_TYPE.equals(thingTypeUID)) {
  73             return new VehicleHandler(thing, stateDescriptionProvider);
  74         }
  75         logger.warn("ThingHandler not found for {}", thing.getThingTypeUID());
  76         return null;
  77     }
  78
  79     @Override
  80     protected void removeHandler(ThingHandler thingHandler) {
  81         if (thingHandler instanceof VolvoOnCallBridgeHandler) {
  82             ThingUID thingUID = thingHandler.getThing().getUID();
  83             unregisterDeviceDiscoveryService(thingUID);
  84         }
  85         super.removeHandler(thingHandler);
  86     }
  87
  88     private void registerDeviceDiscoveryService(VolvoOnCallBridgeHandler bridgeHandler) {
  89         VolvoOnCallDiscoveryService discoveryService = new VolvoOnCallDiscoveryService(bridgeHandler);
  90         discoveryServiceRegs.put(bridgeHandler.getThing().getUID(),
  91                 bundleContext.registerService(DiscoveryService.class.getName(), discoveryService, new Hashtable<>()));
  92     }
  93
  94     private void unregisterDeviceDiscoveryService(ThingUID thingUID) {
  95         if (discoveryServiceRegs.containsKey(thingUID)) {
  96             ServiceRegistration<?> serviceReg = discoveryServiceRegs.get(thingUID);
  97             serviceReg.unregister();
  98             discoveryServiceRegs.remove(thingUID);
  99         }
 100     }
 101 }