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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.powermax.internal;
  14
  15 import static org.openhab.binding.powermax.internal.PowermaxBindingConstants.*;
  16
  17 import java.util.HashMap;
  18 import java.util.Hashtable;
  19 import java.util.Map;
  20
  21 import org.eclipse.jdt.annotation.NonNullByDefault;
  22 import org.eclipse.jdt.annotation.Nullable;
  23 import org.openhab.binding.powermax.internal.discovery.PowermaxDiscoveryService;
  24 import org.openhab.binding.powermax.internal.handler.PowermaxBridgeHandler;
  25 import org.openhab.binding.powermax.internal.handler.PowermaxThingHandler;
  26 import org.openhab.core.config.core.Configuration;
  27 import org.openhab.core.config.discovery.DiscoveryService;
  28 import org.openhab.core.i18n.TimeZoneProvider;
  29 import org.openhab.core.io.transport.serial.SerialPortManager;
  30 import org.openhab.core.thing.Bridge;
  31 import org.openhab.core.thing.Thing;
  32 import org.openhab.core.thing.ThingTypeUID;
  33 import org.openhab.core.thing.ThingUID;
  34 import org.openhab.core.thing.binding.BaseThingHandlerFactory;
  35 import org.openhab.core.thing.binding.ThingHandler;
  36 import org.openhab.core.thing.binding.ThingHandlerFactory;
  37 import org.osgi.framework.ServiceRegistration;
  38 import org.osgi.service.component.annotations.Activate;
  39 import org.osgi.service.component.annotations.Component;
  40 import org.osgi.service.component.annotations.Reference;
  41
  42 /**
  43  * The {@link PowermaxHandlerFactory} is responsible for creating things and thing
  44  * handlers.
  45  *
  46  * @author Laurent Garnier - Initial contribution
  47  */
  48 @NonNullByDefault
  49 @Component(service = ThingHandlerFactory.class, configurationPid = "binding.powermax")
  50 public class PowermaxHandlerFactory extends BaseThingHandlerFactory {
  51
  52     private final Map<ThingUID, @Nullable ServiceRegistration<?>> discoveryServiceRegs = new HashMap<>();
  53
  54     private final SerialPortManager serialPortManager;
  55     private final TimeZoneProvider timeZoneProvider;
  56
  57     @Activate
  58     public PowermaxHandlerFactory(final @Reference SerialPortManager serialPortManager,
  59             final @Reference TimeZoneProvider timeZoneProvider) {
  60         this.serialPortManager = serialPortManager;
  61         this.timeZoneProvider = timeZoneProvider;
  62     }
  63
  64     @Override
  65     public boolean supportsThingType(ThingTypeUID thingTypeUID) {
  66         return SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID) || SUPPORTED_BRIDGE_TYPES_UIDS.contains(thingTypeUID);
  67     }
  68
  69     @Override
  70     public @Nullable Thing createThing(ThingTypeUID thingTypeUID, Configuration configuration,
  71             @Nullable ThingUID thingUID, @Nullable ThingUID bridgeUID) {
  72         if (SUPPORTED_BRIDGE_TYPES_UIDS.contains(thingTypeUID)) {
  73             return super.createThing(thingTypeUID, configuration, thingUID, null);
  74         } else if (SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID)) {
  75             ThingUID newThingUID;
  76             if (bridgeUID != null && thingUID != null) {
  77                 newThingUID = new ThingUID(thingTypeUID, bridgeUID, thingUID.getId());
  78             } else {
  79                 newThingUID = thingUID;
  80             }
  81             return super.createThing(thingTypeUID, configuration, newThingUID, bridgeUID);
  82         }
  83         throw new IllegalArgumentException(
  84                 "The thing type " + thingTypeUID + " is not supported by the Powermax binding.");
  85     }
  86
  87     @Override
  88     protected @Nullable ThingHandler createHandler(Thing thing) {
  89         ThingTypeUID thingTypeUID = thing.getThingTypeUID();
  90
  91         if (SUPPORTED_BRIDGE_TYPES_UIDS.contains(thingTypeUID)) {
  92             PowermaxBridgeHandler handler = new PowermaxBridgeHandler((Bridge) thing, serialPortManager);
  93             registerDiscoveryService(handler);
  94             return handler;
  95         } else if (SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID)) {
  96             return new PowermaxThingHandler(thing, timeZoneProvider);
  97         }
  98
  99         return null;
 100     }
 101
 102     @Override
 103     protected void removeHandler(ThingHandler thingHandler) {
 104         if (thingHandler instanceof PowermaxBridgeHandler) {
 105             // remove discovery service, if bridge handler is removed
 106             unregisterDiscoveryService((PowermaxBridgeHandler) thingHandler);
 107         }
 108     }
 109
 110     private synchronized void registerDiscoveryService(PowermaxBridgeHandler bridgeHandler) {
 111         PowermaxDiscoveryService discoveryService = new PowermaxDiscoveryService(bridgeHandler);
 112         discoveryService.activate();
 113         discoveryServiceRegs.put(bridgeHandler.getThing().getUID(),
 114                 bundleContext.registerService(DiscoveryService.class.getName(), discoveryService, new Hashtable<>()));
 115     }
 116
 117     private synchronized void unregisterDiscoveryService(PowermaxBridgeHandler bridgeHandler) {
 118         ServiceRegistration<?> serviceReg = discoveryServiceRegs.remove(bridgeHandler.getThing().getUID());
 119         if (serviceReg != null) {
 120             PowermaxDiscoveryService service = (PowermaxDiscoveryService) bundleContext
 121                     .getService(serviceReg.getReference());
 122             serviceReg.unregister();
 123             if (service != null) {
 124                 service.deactivate();
 125             }
 126         }
 127     }
 128 }