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   1 /**
   2  * Copyright (c) 2010-2020 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.openweathermap.internal.factory;
  14
  15 import static org.openhab.binding.openweathermap.internal.OpenWeatherMapBindingConstants.*;
  16
  17 import java.util.Collections;
  18 import java.util.HashMap;
  19 import java.util.Hashtable;
  20 import java.util.Map;
  21 import java.util.Set;
  22 import java.util.stream.Collectors;
  23 import java.util.stream.Stream;
  24
  25 import org.eclipse.jdt.annotation.NonNullByDefault;
  26 import org.eclipse.jdt.annotation.Nullable;
  27 import org.eclipse.jetty.client.HttpClient;
  28 import org.openhab.binding.openweathermap.internal.discovery.OpenWeatherMapDiscoveryService;
  29 import org.openhab.binding.openweathermap.internal.handler.AbstractOpenWeatherMapHandler;
  30 import org.openhab.binding.openweathermap.internal.handler.OpenWeatherMapAPIHandler;
  31 import org.openhab.binding.openweathermap.internal.handler.OpenWeatherMapUVIndexHandler;
  32 import org.openhab.binding.openweathermap.internal.handler.OpenWeatherMapWeatherAndForecastHandler;
  33 import org.openhab.core.config.discovery.DiscoveryService;
  34 import org.openhab.core.i18n.LocaleProvider;
  35 import org.openhab.core.i18n.LocationProvider;
  36 import org.openhab.core.i18n.TimeZoneProvider;
  37 import org.openhab.core.i18n.TranslationProvider;
  38 import org.openhab.core.io.net.http.HttpClientFactory;
  39 import org.openhab.core.thing.Bridge;
  40 import org.openhab.core.thing.Thing;
  41 import org.openhab.core.thing.ThingTypeUID;
  42 import org.openhab.core.thing.ThingUID;
  43 import org.openhab.core.thing.binding.BaseThingHandlerFactory;
  44 import org.openhab.core.thing.binding.ThingHandler;
  45 import org.openhab.core.thing.binding.ThingHandlerFactory;
  46 import org.osgi.framework.ServiceRegistration;
  47 import org.osgi.service.component.annotations.Activate;
  48 import org.osgi.service.component.annotations.Component;
  49 import org.osgi.service.component.annotations.Reference;
  50
  51 /**
  52  * The {@link OpenWeatherMapHandlerFactory} is responsible for creating things and thing handlers.
  53  *
  54  * @author Christoph Weitkamp - Initial contribution
  55  */
  56 @NonNullByDefault
  57 @Component(service = ThingHandlerFactory.class, configurationPid = "binding.openweathermap")
  58 public class OpenWeatherMapHandlerFactory extends BaseThingHandlerFactory {
  59
  60     private static final Set<ThingTypeUID> SUPPORTED_THING_TYPES_UIDS = Collections
  61             .unmodifiableSet(Stream.concat(OpenWeatherMapAPIHandler.SUPPORTED_THING_TYPES.stream(),
  62                     AbstractOpenWeatherMapHandler.SUPPORTED_THING_TYPES.stream()).collect(Collectors.toSet()));
  63
  64     private final Map<ThingUID, ServiceRegistration<?>> discoveryServiceRegs = new HashMap<>();
  65     private final HttpClient httpClient;
  66     private final LocaleProvider localeProvider;
  67     private final LocationProvider locationProvider;
  68     private final TranslationProvider i18nProvider;
  69     private final TimeZoneProvider timeZoneProvider;
  70
  71     @Activate
  72     public OpenWeatherMapHandlerFactory(final @Reference HttpClientFactory httpClientFactory,
  73             final @Reference LocaleProvider localeProvider, final @Reference LocationProvider locationProvider,
  74             final @Reference TranslationProvider i18nProvider, final @Reference TimeZoneProvider timeZoneProvider) {
  75         this.httpClient = httpClientFactory.getCommonHttpClient();
  76         this.localeProvider = localeProvider;
  77         this.locationProvider = locationProvider;
  78         this.i18nProvider = i18nProvider;
  79         this.timeZoneProvider = timeZoneProvider;
  80     }
  81
  82     @Override
  83     public boolean supportsThingType(ThingTypeUID thingTypeUID) {
  84         return SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID);
  85     }
  86
  87     @Override
  88     protected @Nullable ThingHandler createHandler(Thing thing) {
  89         ThingTypeUID thingTypeUID = thing.getThingTypeUID();
  90
  91         if (THING_TYPE_WEATHER_API.equals(thingTypeUID)) {
  92             OpenWeatherMapAPIHandler handler = new OpenWeatherMapAPIHandler((Bridge) thing, httpClient, localeProvider);
  93             // register discovery service
  94             OpenWeatherMapDiscoveryService discoveryService = new OpenWeatherMapDiscoveryService(handler,
  95                     locationProvider, localeProvider, i18nProvider);
  96             discoveryServiceRegs.put(handler.getThing().getUID(), bundleContext
  97                     .registerService(DiscoveryService.class.getName(), discoveryService, new Hashtable<>()));
  98             return handler;
  99         } else if (THING_TYPE_WEATHER_AND_FORECAST.equals(thingTypeUID)) {
 100             return new OpenWeatherMapWeatherAndForecastHandler(thing, timeZoneProvider);
 101         } else if (THING_TYPE_UVINDEX.equals(thingTypeUID)) {
 102             return new OpenWeatherMapUVIndexHandler(thing, timeZoneProvider);
 103         }
 104
 105         return null;
 106     }
 107
 108     @Override
 109     protected synchronized void removeHandler(ThingHandler thingHandler) {
 110         if (thingHandler instanceof OpenWeatherMapAPIHandler) {
 111             ServiceRegistration<?> serviceReg = discoveryServiceRegs.remove(thingHandler.getThing().getUID());
 112             if (serviceReg != null) {
 113                 // remove discovery service, if bridge handler is removed
 114                 OpenWeatherMapDiscoveryService discoveryService = (OpenWeatherMapDiscoveryService) bundleContext
 115                         .getService(serviceReg.getReference());
 116                 serviceReg.unregister();
 117                 if (discoveryService != null) {
 118                     discoveryService.deactivate();
 119                 }
 120             }
 121         }
 122     }
 123 }