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   1 /**
   2  * Copyright (c) 2010-2022 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.pulseaudio.internal;
  14
  15 import java.util.Collections;
  16 import java.util.HashMap;
  17 import java.util.Hashtable;
  18 import java.util.Map;
  19 import java.util.Set;
  20 import java.util.stream.Collectors;
  21 import java.util.stream.Stream;
  22
  23 import org.openhab.binding.pulseaudio.internal.discovery.PulseaudioDeviceDiscoveryService;
  24 import org.openhab.binding.pulseaudio.internal.handler.PulseaudioBridgeHandler;
  25 import org.openhab.binding.pulseaudio.internal.handler.PulseaudioHandler;
  26 import org.openhab.core.config.core.Configuration;
  27 import org.openhab.core.config.discovery.DiscoveryService;
  28 import org.openhab.core.thing.Bridge;
  29 import org.openhab.core.thing.Thing;
  30 import org.openhab.core.thing.ThingTypeUID;
  31 import org.openhab.core.thing.ThingUID;
  32 import org.openhab.core.thing.binding.BaseThingHandlerFactory;
  33 import org.openhab.core.thing.binding.ThingHandler;
  34 import org.openhab.core.thing.binding.ThingHandlerFactory;
  35 import org.osgi.framework.ServiceRegistration;
  36 import org.osgi.service.component.ComponentContext;
  37 import org.osgi.service.component.annotations.Activate;
  38 import org.osgi.service.component.annotations.Component;
  39 import org.osgi.service.component.annotations.Modified;
  40 import org.slf4j.Logger;
  41 import org.slf4j.LoggerFactory;
  42
  43 /**
  44  * The {@link PulseaudioHandlerFactory} is responsible for creating things and thing
  45  * handlers.
  46  *
  47  * @author Tobias Bräutigam - Initial contribution
  48  */
  49 @Component(service = ThingHandlerFactory.class, configurationPid = "binding.pulseaudio")
  50 public class PulseaudioHandlerFactory extends BaseThingHandlerFactory {
  51     private final Logger logger = LoggerFactory.getLogger(PulseaudioHandlerFactory.class);
  52
  53     public static final Set<ThingTypeUID> SUPPORTED_THING_TYPES_UIDS = Collections
  54             .unmodifiableSet(Stream.concat(PulseaudioBridgeHandler.SUPPORTED_THING_TYPES_UIDS.stream(),
  55                     PulseaudioHandler.SUPPORTED_THING_TYPES_UIDS.stream()).collect(Collectors.toSet()));
  56
  57     private final Map<ThingHandler, ServiceRegistration<?>> discoveryServiceReg = new HashMap<>();
  58
  59     private PulseAudioBindingConfiguration configuration = new PulseAudioBindingConfiguration();
  60
  61     @Override
  62     public boolean supportsThingType(ThingTypeUID thingTypeUID) {
  63         return SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID);
  64     }
  65
  66     @Override
  67     public Thing createThing(ThingTypeUID thingTypeUID, Configuration configuration, ThingUID thingUID,
  68             ThingUID bridgeUID) {
  69         if (PulseaudioBridgeHandler.SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID)) {
  70             return super.createThing(thingTypeUID, configuration, thingUID, null);
  71         }
  72         if (PulseaudioHandler.SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID)) {
  73             ThingUID deviceUID = getPulseaudioDeviceUID(thingTypeUID, thingUID, configuration, bridgeUID);
  74             return super.createThing(thingTypeUID, configuration, deviceUID, bridgeUID);
  75         }
  76         throw new IllegalArgumentException("The thing type " + thingTypeUID + " is not supported by the binding.");
  77     }
  78
  79     private void registerDeviceDiscoveryService(PulseaudioBridgeHandler paBridgeHandler) {
  80         PulseaudioDeviceDiscoveryService discoveryService = new PulseaudioDeviceDiscoveryService(paBridgeHandler);
  81         discoveryService.activate();
  82         this.discoveryServiceReg.put(paBridgeHandler,
  83                 bundleContext.registerService(DiscoveryService.class.getName(), discoveryService, new Hashtable<>()));
  84     }
  85
  86     private ThingUID getPulseaudioDeviceUID(ThingTypeUID thingTypeUID, ThingUID thingUID, Configuration configuration,
  87             ThingUID bridgeUID) {
  88         if (thingUID == null) {
  89             String name = (String) configuration.get(PulseaudioBindingConstants.DEVICE_PARAMETER_NAME);
  90             return new ThingUID(thingTypeUID, name, bridgeUID.getId());
  91         }
  92         return thingUID;
  93     }
  94
  95     @Override
  96     protected void removeHandler(ThingHandler thingHandler) {
  97         ServiceRegistration<?> serviceRegistration = this.discoveryServiceReg.get(thingHandler);
  98         if (serviceRegistration != null) {
  99             PulseaudioDeviceDiscoveryService service = (PulseaudioDeviceDiscoveryService) bundleContext
 100                     .getService(serviceRegistration.getReference());
 101             service.deactivate();
 102             serviceRegistration.unregister();
 103         }
 104         discoveryServiceReg.remove(thingHandler);
 105         super.removeHandler(thingHandler);
 106     }
 107
 108     @Override
 109     protected ThingHandler createHandler(Thing thing) {
 110
 111         ThingTypeUID thingTypeUID = thing.getThingTypeUID();
 112
 113         if (PulseaudioBridgeHandler.SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID)) {
 114             PulseaudioBridgeHandler handler = new PulseaudioBridgeHandler((Bridge) thing, configuration);
 115             registerDeviceDiscoveryService(handler);
 116             return handler;
 117         } else if (PulseaudioHandler.SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID)) {
 118             return new PulseaudioHandler(thing, bundleContext);
 119         }
 120
 121         return null;
 122     }
 123
 124     // The activate component call is used to access the bindings configuration
 125     @Activate
 126     protected synchronized void activate(ComponentContext componentContext, Map<String, Object> config) {
 127         super.activate(componentContext);
 128         modified(config);
 129     }
 130
 131     @Modified
 132     protected void modified(Map<String, Object> config) {
 133         configuration.update(new Configuration(config).as(PulseAudioBindingConfiguration.class));
 134         logger.debug("pulseaudio configuration update received ({})", config);
 135     }
 136 }