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