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   1 /**
   2  * Copyright (c) 2010-2023 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.neohub.internal;
  14
  15 import static org.openhab.binding.neohub.internal.NeoHubBindingConstants.*;
  16
  17 import java.util.Arrays;
  18 import java.util.Collections;
  19 import java.util.HashMap;
  20 import java.util.HashSet;
  21 import java.util.Hashtable;
  22 import java.util.Map;
  23 import java.util.Set;
  24
  25 import org.eclipse.jdt.annotation.NonNullByDefault;
  26 import org.eclipse.jdt.annotation.Nullable;
  27 import org.openhab.core.config.discovery.DiscoveryService;
  28 import org.openhab.core.io.net.http.WebSocketFactory;
  29 import org.openhab.core.thing.Bridge;
  30 import org.openhab.core.thing.Thing;
  31 import org.openhab.core.thing.ThingTypeUID;
  32 import org.openhab.core.thing.ThingUID;
  33 import org.openhab.core.thing.binding.BaseThingHandlerFactory;
  34 import org.openhab.core.thing.binding.ThingHandler;
  35 import org.openhab.core.thing.binding.ThingHandlerFactory;
  36 import org.osgi.framework.ServiceRegistration;
  37 import org.osgi.service.component.annotations.Activate;
  38 import org.osgi.service.component.annotations.Component;
  39 import org.osgi.service.component.annotations.Reference;
  40
  41 /**
  42  * The {@link NeoHubHandlerFactory} creates things and thing handlers
  43  *
  44  * @author Andrew Fiddian-Green - Initial contribution
  45  */
  46 @NonNullByDefault
  47 @Component(configurationPid = "binding.neohub", service = ThingHandlerFactory.class)
  48 public class NeoHubHandlerFactory extends BaseThingHandlerFactory {
  49
  50     private static final Set<ThingTypeUID> SUPPORTED_THING_TYPES_UIDS = Collections
  51             .unmodifiableSet(new HashSet<>(Arrays.asList(THING_TYPE_NEOHUB, THING_TYPE_NEOSTAT, THING_TYPE_NEOPLUG,
  52                     THING_TYPE_NEOCONTACT, THING_TYPE_NEOTEMPERATURESENSOR)));
  53
  54     private final WebSocketFactory webSocketFactory;
  55     private final Map<ThingUID, ServiceRegistration<?>> discoServices = new HashMap<>();
  56
  57     @Activate
  58     public NeoHubHandlerFactory(final @Reference WebSocketFactory webSocketFactory) {
  59         this.webSocketFactory = webSocketFactory;
  60     }
  61
  62     @Override
  63     public boolean supportsThingType(ThingTypeUID thingTypeUID) {
  64         return SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID);
  65     }
  66
  67     @Override
  68     protected @Nullable ThingHandler createHandler(Thing thing) {
  69         ThingTypeUID thingTypeUID = thing.getThingTypeUID();
  70
  71         if ((thingTypeUID.equals(THING_TYPE_NEOHUB)) && (thing instanceof Bridge)) {
  72             NeoHubHandler handler = new NeoHubHandler((Bridge) thing, webSocketFactory);
  73             createDiscoveryService(handler);
  74             return handler;
  75         }
  76
  77         if (thingTypeUID.equals(THING_TYPE_NEOSTAT)) {
  78             return new NeoStatHandler(thing);
  79         }
  80
  81         if (thingTypeUID.equals(THING_TYPE_NEOPLUG)) {
  82             return new NeoPlugHandler(thing);
  83         }
  84
  85         if (thingTypeUID.equals(THING_TYPE_NEOCONTACT)) {
  86             return new NeoContactHandler(thing);
  87         }
  88
  89         if (thingTypeUID.equals(THING_TYPE_NEOTEMPERATURESENSOR)) {
  90             return new NeoTemperatureSensorHandler(thing);
  91         }
  92
  93         return null;
  94     }
  95
  96     @Override
  97     protected synchronized void removeHandler(ThingHandler handler) {
  98         if (handler instanceof NeoHubHandler) {
  99             destroyDiscoveryService((NeoHubHandler) handler);
 100         }
 101     }
 102
 103     /*
 104      * create a discovery service so that a newly created hub will find the
 105      * respective things tht are inside it
 106      */
 107     private synchronized void createDiscoveryService(NeoHubHandler handler) {
 108         // create a new discovery service
 109         NeoHubDiscoveryService ds = new NeoHubDiscoveryService(handler);
 110
 111         // activate the discovery service
 112         ds.activate();
 113
 114         // register the discovery service
 115         ServiceRegistration<?> serviceReg = bundleContext.registerService(DiscoveryService.class.getName(), ds,
 116                 new Hashtable<>());
 117
 118         /*
 119          * store service registration in a list so we can destroy it when the respective
 120          * hub is destroyed
 121          */
 122         discoServices.put(handler.getThing().getUID(), serviceReg);
 123     }
 124
 125     /*
 126      * destroy the discovery service
 127      */
 128     private synchronized void destroyDiscoveryService(NeoHubHandler handler) {
 129         // fetch the respective thing's service registration from our list
 130         ServiceRegistration<?> serviceReg = discoServices.remove(handler.getThing().getUID());
 131
 132         if (serviceReg != null) {
 133             // retrieve the respective discovery service
 134             NeoHubDiscoveryService disco = (NeoHubDiscoveryService) bundleContext.getService(serviceReg.getReference());
 135
 136             // and unregister the service
 137             serviceReg.unregister();
 138
 139             // deactivate the service
 140             if (disco != null) {
 141                 disco.deactivate();
 142             }
 143         }
 144     }
 145 }