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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.mqtt.homie.generic.internal;
  14
  15 import java.util.Set;
  16
  17 import org.eclipse.jdt.annotation.NonNullByDefault;
  18 import org.eclipse.jdt.annotation.Nullable;
  19 import org.openhab.binding.mqtt.generic.MqttChannelStateDescriptionProvider;
  20 import org.openhab.binding.mqtt.generic.MqttChannelTypeProvider;
  21 import org.openhab.binding.mqtt.generic.TransformationServiceProvider;
  22 import org.openhab.binding.mqtt.homie.internal.handler.HomieThingHandler;
  23 import org.openhab.core.thing.Thing;
  24 import org.openhab.core.thing.ThingTypeUID;
  25 import org.openhab.core.thing.binding.BaseThingHandlerFactory;
  26 import org.openhab.core.thing.binding.ThingHandler;
  27 import org.openhab.core.thing.binding.ThingHandlerFactory;
  28 import org.openhab.core.thing.type.ChannelTypeRegistry;
  29 import org.openhab.core.transform.TransformationHelper;
  30 import org.openhab.core.transform.TransformationService;
  31 import org.osgi.service.component.annotations.Activate;
  32 import org.osgi.service.component.annotations.Component;
  33 import org.osgi.service.component.annotations.Reference;
  34
  35 /**
  36  * The {@link MqttThingHandlerFactory} is responsible for creating things and thing
  37  * handlers.
  38  *
  39  * @author David Graeff - Initial contribution
  40  */
  41 @Component(service = ThingHandlerFactory.class)
  42 @NonNullByDefault
  43 public class MqttThingHandlerFactory extends BaseThingHandlerFactory implements TransformationServiceProvider {
  44     private final MqttChannelTypeProvider typeProvider;
  45     private final MqttChannelStateDescriptionProvider stateDescriptionProvider;
  46     private final ChannelTypeRegistry channelTypeRegistry;
  47
  48     @Activate
  49     public MqttThingHandlerFactory(final @Reference MqttChannelTypeProvider typeProvider,
  50             final @Reference MqttChannelStateDescriptionProvider stateDescriptionProvider,
  51             final @Reference ChannelTypeRegistry channelTypeRegistry) {
  52         this.typeProvider = typeProvider;
  53         this.stateDescriptionProvider = stateDescriptionProvider;
  54         this.channelTypeRegistry = channelTypeRegistry;
  55     }
  56
  57     private static final Set<ThingTypeUID> SUPPORTED_THING_TYPES_UIDS = Set
  58             .of(MqttBindingConstants.HOMIE300_MQTT_THING);
  59
  60     @Override
  61     public boolean supportsThingType(ThingTypeUID thingTypeUID) {
  62         return SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID) || isHomieDynamicType(thingTypeUID);
  63     }
  64
  65     private boolean isHomieDynamicType(ThingTypeUID thingTypeUID) {
  66         return MqttBindingConstants.BINDING_ID.equals(thingTypeUID.getBindingId())
  67                 && thingTypeUID.getId().startsWith(MqttBindingConstants.HOMIE300_MQTT_THING.getId());
  68     }
  69
  70     @Override
  71     protected @Nullable ThingHandler createHandler(Thing thing) {
  72         ThingTypeUID thingTypeUID = thing.getThingTypeUID();
  73
  74         if (supportsThingType(thingTypeUID)) {
  75             return new HomieThingHandler(thing, typeProvider, stateDescriptionProvider, channelTypeRegistry,
  76                     MqttBindingConstants.HOMIE_DEVICE_TIMEOUT_MS, MqttBindingConstants.HOMIE_SUBSCRIBE_TIMEOUT_MS,
  77                     MqttBindingConstants.HOMIE_ATTRIBUTE_TIMEOUT_MS);
  78         }
  79         return null;
  80     }
  81
  82     @Override
  83     public @Nullable TransformationService getTransformationService(String type) {
  84         return TransformationHelper.getTransformationService(bundleContext, type);
  85     }
  86 }