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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.nest.internal;
  14
  15 import static java.util.stream.Collectors.toSet;
  16 import static org.openhab.binding.nest.internal.NestBindingConstants.*;
  17
  18 import java.util.HashMap;
  19 import java.util.Hashtable;
  20 import java.util.Map;
  21 import java.util.Set;
  22 import java.util.stream.Stream;
  23
  24 import javax.ws.rs.client.ClientBuilder;
  25
  26 import org.eclipse.jdt.annotation.NonNullByDefault;
  27 import org.eclipse.jdt.annotation.Nullable;
  28 import org.openhab.binding.nest.internal.discovery.NestDiscoveryService;
  29 import org.openhab.binding.nest.internal.handler.NestBridgeHandler;
  30 import org.openhab.binding.nest.internal.handler.NestCameraHandler;
  31 import org.openhab.binding.nest.internal.handler.NestSmokeDetectorHandler;
  32 import org.openhab.binding.nest.internal.handler.NestStructureHandler;
  33 import org.openhab.binding.nest.internal.handler.NestThermostatHandler;
  34 import org.openhab.core.config.discovery.DiscoveryService;
  35 import org.openhab.core.thing.Bridge;
  36 import org.openhab.core.thing.Thing;
  37 import org.openhab.core.thing.ThingTypeUID;
  38 import org.openhab.core.thing.ThingUID;
  39 import org.openhab.core.thing.binding.BaseThingHandlerFactory;
  40 import org.openhab.core.thing.binding.ThingHandler;
  41 import org.openhab.core.thing.binding.ThingHandlerFactory;
  42 import org.osgi.framework.ServiceRegistration;
  43 import org.osgi.service.component.annotations.Activate;
  44 import org.osgi.service.component.annotations.Component;
  45 import org.osgi.service.component.annotations.Reference;
  46 import org.osgi.service.jaxrs.client.SseEventSourceFactory;
  47
  48 /**
  49  * The {@link NestHandlerFactory} is responsible for creating things and thing
  50  * handlers. It also sets up the discovery service to track things from the bridge
  51  * when the bridge is created.
  52  *
  53  * @author David Bennett - Initial contribution
  54  */
  55 @NonNullByDefault
  56 @Component(service = ThingHandlerFactory.class, configurationPid = "binding.nest")
  57 public class NestHandlerFactory extends BaseThingHandlerFactory {
  58     private static final Set<ThingTypeUID> SUPPORTED_THING_TYPES_UIDS = Stream.of(THING_TYPE_THERMOSTAT,
  59             THING_TYPE_CAMERA, THING_TYPE_BRIDGE, THING_TYPE_STRUCTURE, THING_TYPE_SMOKE_DETECTOR).collect(toSet());
  60
  61     private final ClientBuilder clientBuilder;
  62     private final SseEventSourceFactory eventSourceFactory;
  63     private final Map<ThingUID, ServiceRegistration<?>> discoveryService = new HashMap<>();
  64
  65     @Activate
  66     public NestHandlerFactory(@Reference ClientBuilder clientBuilder,
  67             @Reference SseEventSourceFactory eventSourceFactory) {
  68         this.clientBuilder = clientBuilder;
  69         this.eventSourceFactory = eventSourceFactory;
  70     }
  71
  72     /**
  73      * The things this factory supports creating.
  74      */
  75     @Override
  76     public boolean supportsThingType(ThingTypeUID thingTypeUID) {
  77         return SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID);
  78     }
  79
  80     /**
  81      * Creates a handler for the specific thing. THis also creates the discovery service
  82      * when the bridge is created.
  83      */
  84     @Override
  85     protected @Nullable ThingHandler createHandler(Thing thing) {
  86         ThingTypeUID thingTypeUID = thing.getThingTypeUID();
  87
  88         if (THING_TYPE_THERMOSTAT.equals(thingTypeUID)) {
  89             return new NestThermostatHandler(thing);
  90         }
  91
  92         if (THING_TYPE_CAMERA.equals(thingTypeUID)) {
  93             return new NestCameraHandler(thing);
  94         }
  95
  96         if (THING_TYPE_STRUCTURE.equals(thingTypeUID)) {
  97             return new NestStructureHandler(thing);
  98         }
  99
 100         if (THING_TYPE_SMOKE_DETECTOR.equals(thingTypeUID)) {
 101             return new NestSmokeDetectorHandler(thing);
 102         }
 103
 104         if (THING_TYPE_BRIDGE.equals(thingTypeUID)) {
 105             NestBridgeHandler handler = new NestBridgeHandler((Bridge) thing, clientBuilder, eventSourceFactory);
 106             NestDiscoveryService service = new NestDiscoveryService(handler);
 107             service.activate();
 108             // Register the discovery service.
 109             discoveryService.put(handler.getThing().getUID(),
 110                     bundleContext.registerService(DiscoveryService.class.getName(), service, new Hashtable<>()));
 111             return handler;
 112         }
 113
 114         return null;
 115     }
 116
 117     /**
 118      * Removes the handler for the specific thing. This also handles disabling the discovery
 119      * service when the bridge is removed.
 120      */
 121     @Override
 122     protected void removeHandler(ThingHandler thingHandler) {
 123         if (thingHandler instanceof NestBridgeHandler) {
 124             ServiceRegistration<?> reg = discoveryService.get(thingHandler.getThing().getUID());
 125             if (reg != null) {
 126                 // Unregister the discovery service.
 127                 NestDiscoveryService service = (NestDiscoveryService) bundleContext.getService(reg.getReference());
 128                 service.deactivate();
 129                 reg.unregister();
 130                 discoveryService.remove(thingHandler.getThing().getUID());
 131             }
 132         }
 133         super.removeHandler(thingHandler);
 134     }
 135 }