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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.generic.internal;
  14
  15 import java.util.Set;
  16 import java.util.stream.Collectors;
  17 import java.util.stream.Stream;
  18
  19 import org.eclipse.jdt.annotation.NonNullByDefault;
  20 import org.eclipse.jdt.annotation.Nullable;
  21 import org.openhab.binding.mqtt.generic.MqttChannelStateDescriptionProvider;
  22 import org.openhab.binding.mqtt.generic.TransformationServiceProvider;
  23 import org.openhab.binding.mqtt.generic.internal.handler.GenericMQTTThingHandler;
  24 import org.openhab.core.thing.Thing;
  25 import org.openhab.core.thing.ThingTypeUID;
  26 import org.openhab.core.thing.binding.BaseThingHandlerFactory;
  27 import org.openhab.core.thing.binding.ThingHandler;
  28 import org.openhab.core.thing.binding.ThingHandlerFactory;
  29 import org.openhab.core.transform.TransformationHelper;
  30 import org.openhab.core.transform.TransformationService;
  31 import org.osgi.service.component.ComponentContext;
  32 import org.osgi.service.component.annotations.Activate;
  33 import org.osgi.service.component.annotations.Component;
  34 import org.osgi.service.component.annotations.Deactivate;
  35 import org.osgi.service.component.annotations.Reference;
  36
  37 /**
  38  * The {@link MqttThingHandlerFactory} is responsible for creating things and thing
  39  * handlers.
  40  *
  41  * @author David Graeff - Initial contribution
  42  */
  43 @Component(service = ThingHandlerFactory.class)
  44 @NonNullByDefault
  45 public class MqttThingHandlerFactory extends BaseThingHandlerFactory implements TransformationServiceProvider {
  46     private @NonNullByDefault({}) MqttChannelStateDescriptionProvider stateDescriptionProvider;
  47     private static final Set<ThingTypeUID> SUPPORTED_THING_TYPES_UIDS = Stream
  48             .of(MqttBindingConstants.GENERIC_MQTT_THING).collect(Collectors.toSet());
  49
  50     @Override
  51     public boolean supportsThingType(ThingTypeUID thingTypeUID) {
  52         return SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID);
  53     }
  54
  55     @Activate
  56     @Override
  57     protected void activate(ComponentContext componentContext) {
  58         super.activate(componentContext);
  59     }
  60
  61     @Deactivate
  62     @Override
  63     protected void deactivate(ComponentContext componentContext) {
  64         super.deactivate(componentContext);
  65     }
  66
  67     @Reference
  68     protected void setStateDescriptionProvider(MqttChannelStateDescriptionProvider stateDescription) {
  69         this.stateDescriptionProvider = stateDescription;
  70     }
  71
  72     protected void unsetStateDescriptionProvider(MqttChannelStateDescriptionProvider stateDescription) {
  73         this.stateDescriptionProvider = null;
  74     }
  75
  76     @Override
  77     protected @Nullable ThingHandler createHandler(Thing thing) {
  78         ThingTypeUID thingTypeUID = thing.getThingTypeUID();
  79
  80         if (thingTypeUID.equals(MqttBindingConstants.GENERIC_MQTT_THING)) {
  81             return new GenericMQTTThingHandler(thing, stateDescriptionProvider, this, 1500);
  82         }
  83         return null;
  84     }
  85
  86     @Override
  87     public @Nullable TransformationService getTransformationService(String type) {
  88         return TransformationHelper.getTransformationService(bundleContext, type);
  89     }
  90 }