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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.homeassistant.generic.internal;
  14
  15 import java.util.Set;
  16 import java.util.stream.Collectors;
  17 import java.util.stream.Stream;
  18
  19 import org.apache.commons.lang.StringUtils;
  20 import org.eclipse.jdt.annotation.NonNullByDefault;
  21 import org.eclipse.jdt.annotation.Nullable;
  22 import org.openhab.binding.mqtt.generic.MqttChannelTypeProvider;
  23 import org.openhab.binding.mqtt.generic.TransformationServiceProvider;
  24 import org.openhab.binding.mqtt.homeassistant.internal.handler.HomeAssistantThingHandler;
  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 static final Set<ThingTypeUID> SUPPORTED_THING_TYPES_UIDS = Stream
  49             .of(MqttBindingConstants.HOMEASSISTANT_MQTT_THING).collect(Collectors.toSet());
  50
  51     @Override
  52     public boolean supportsThingType(ThingTypeUID thingTypeUID) {
  53         return SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID) || isHomeassistantDynamicType(thingTypeUID);
  54     }
  55
  56     private boolean isHomeassistantDynamicType(ThingTypeUID thingTypeUID) {
  57         return StringUtils.equals(MqttBindingConstants.BINDING_ID, thingTypeUID.getBindingId())
  58                 && StringUtils.startsWith(thingTypeUID.getId(), MqttBindingConstants.HOMEASSISTANT_MQTT_THING.getId());
  59     }
  60
  61     @Activate
  62     @Override
  63     protected void activate(ComponentContext componentContext) {
  64         super.activate(componentContext);
  65     }
  66
  67     @Deactivate
  68     @Override
  69     protected void deactivate(ComponentContext componentContext) {
  70         super.deactivate(componentContext);
  71     }
  72
  73     @Reference
  74     protected void setChannelProvider(MqttChannelTypeProvider provider) {
  75         this.typeProvider = provider;
  76     }
  77
  78     protected void unsetChannelProvider(MqttChannelTypeProvider provider) {
  79         this.typeProvider = null;
  80     }
  81
  82     @Override
  83     protected @Nullable ThingHandler createHandler(Thing thing) {
  84         ThingTypeUID thingTypeUID = thing.getThingTypeUID();
  85
  86         if (supportsThingType(thingTypeUID)) {
  87             return new HomeAssistantThingHandler(thing, typeProvider, this, 10000, 2000);
  88         }
  89         return null;
  90     }
  91
  92     @Override
  93     public @Nullable TransformationService getTransformationService(String type) {
  94         return TransformationHelper.getTransformationService(bundleContext, type);
  95     }
  96 }