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   1 /**
   2  * Copyright (c) 2010-2021 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 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.MqttChannelTypeProvider;
  23 import org.openhab.binding.mqtt.generic.TransformationServiceProvider;
  24 import org.openhab.binding.mqtt.homie.internal.handler.HomieThingHandler;
  25 import org.openhab.core.thing.Thing;
  26 import org.openhab.core.thing.ThingTypeUID;
  27 import org.openhab.core.thing.binding.BaseThingHandlerFactory;
  28 import org.openhab.core.thing.binding.ThingHandler;
  29 import org.openhab.core.thing.binding.ThingHandlerFactory;
  30 import org.openhab.core.transform.TransformationHelper;
  31 import org.openhab.core.transform.TransformationService;
  32 import org.osgi.service.component.ComponentContext;
  33 import org.osgi.service.component.annotations.Activate;
  34 import org.osgi.service.component.annotations.Component;
  35 import org.osgi.service.component.annotations.Deactivate;
  36 import org.osgi.service.component.annotations.Reference;
  37
  38 /**
  39  * The {@link MqttThingHandlerFactory} is responsible for creating things and thing
  40  * handlers.
  41  *
  42  * @author David Graeff - Initial contribution
  43  */
  44 @Component(service = ThingHandlerFactory.class)
  45 @NonNullByDefault
  46 public class MqttThingHandlerFactory extends BaseThingHandlerFactory implements TransformationServiceProvider {
  47     private @NonNullByDefault({}) MqttChannelTypeProvider typeProvider;
  48     private @NonNullByDefault({}) MqttChannelStateDescriptionProvider stateDescriptionProvider;
  49     private static final Set<ThingTypeUID> SUPPORTED_THING_TYPES_UIDS = Stream
  50             .of(MqttBindingConstants.HOMIE300_MQTT_THING).collect(Collectors.toSet());
  51
  52     @Override
  53     public boolean supportsThingType(ThingTypeUID thingTypeUID) {
  54         return SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID);
  55     }
  56
  57     @Activate
  58     @Override
  59     protected void activate(ComponentContext componentContext) {
  60         super.activate(componentContext);
  61     }
  62
  63     @Deactivate
  64     @Override
  65     protected void deactivate(ComponentContext componentContext) {
  66         super.deactivate(componentContext);
  67     }
  68
  69     @Reference
  70     protected void setStateDescriptionProvider(MqttChannelStateDescriptionProvider stateDescription) {
  71         this.stateDescriptionProvider = stateDescription;
  72     }
  73
  74     protected void unsetStateDescriptionProvider(MqttChannelStateDescriptionProvider stateDescription) {
  75         this.stateDescriptionProvider = null;
  76     }
  77
  78     @Reference
  79     protected void setChannelProvider(MqttChannelTypeProvider provider) {
  80         this.typeProvider = provider;
  81     }
  82
  83     protected void unsetChannelProvider(MqttChannelTypeProvider provider) {
  84         this.typeProvider = null;
  85     }
  86
  87     @Override
  88     protected @Nullable ThingHandler createHandler(Thing thing) {
  89         ThingTypeUID thingTypeUID = thing.getThingTypeUID();
  90
  91         if (thingTypeUID.equals(MqttBindingConstants.HOMIE300_MQTT_THING)) {
  92             return new HomieThingHandler(thing, typeProvider, MqttBindingConstants.HOMIE_DEVICE_TIMEOUT_MS,
  93                     MqttBindingConstants.HOMIE_SUBSCRIBE_TIMEOUT_MS, MqttBindingConstants.HOMIE_ATTRIBUTE_TIMEOUT_MS);
  94         }
  95         return null;
  96     }
  97
  98     @Override
  99     public @Nullable TransformationService getTransformationService(String type) {
 100         return TransformationHelper.getTransformationService(bundleContext, type);
 101     }
 102 }