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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.bluetooth.roaming.internal;
  14
  15 import java.util.Collections;
  16 import java.util.Set;
  17 import java.util.concurrent.CopyOnWriteArraySet;
  18 import java.util.function.BiConsumer;
  19
  20 import org.eclipse.jdt.annotation.NonNullByDefault;
  21 import org.eclipse.jdt.annotation.Nullable;
  22 import org.openhab.binding.bluetooth.BluetoothAdapter;
  23 import org.openhab.binding.bluetooth.discovery.BluetoothDiscoveryDevice;
  24 import org.openhab.binding.bluetooth.discovery.BluetoothDiscoveryParticipant;
  25 import org.openhab.core.config.discovery.DiscoveryResult;
  26 import org.openhab.core.thing.ThingTypeUID;
  27 import org.openhab.core.thing.ThingUID;
  28 import org.osgi.service.component.annotations.Component;
  29 import org.osgi.service.component.annotations.Reference;
  30 import org.osgi.service.component.annotations.ReferenceCardinality;
  31 import org.osgi.service.component.annotations.ReferencePolicy;
  32
  33 /**
  34  * The {@link RoamingBluetoothDiscoveryParticipant} acts as the roaming adapter's gateway
  35  * to the osgi layer where it can find other adapter instances to use as delegates.
  36  * This class also serves to generate the default roaming adapter discovery result for the user.
  37  *
  38  * @author Connor Petty - Initial contribution
  39  */
  40 @NonNullByDefault
  41 @Component(service = { BluetoothDiscoveryParticipant.class })
  42 public class RoamingBluetoothDiscoveryParticipant implements BluetoothDiscoveryParticipant {
  43
  44     private final Set<BluetoothAdapter> adapters = new CopyOnWriteArraySet<>();
  45     private final Set<RoamingBluetoothAdapter> roamingAdapters = new CopyOnWriteArraySet<>();
  46
  47     // private Optional<RoamingBluetoothAdapter> roamingAdapter = Optional.empty();
  48
  49     @Reference(cardinality = ReferenceCardinality.MULTIPLE, policy = ReferencePolicy.DYNAMIC)
  50     protected void setRoamingBluetoothAdapter(RoamingBluetoothAdapter roamingAdapter) {
  51         roamingAdapters.add(roamingAdapter);
  52         adapters.forEach(roamingAdapter::addBluetoothAdapter);
  53     }
  54
  55     protected void unsetRoamingBluetoothAdapter(RoamingBluetoothAdapter roamingAdapter) {
  56         roamingAdapters.remove(roamingAdapter);
  57         adapters.forEach(roamingAdapter::removeBluetoothAdapter);
  58     }
  59
  60     @Reference(cardinality = ReferenceCardinality.MULTIPLE, policy = ReferencePolicy.DYNAMIC)
  61     protected void addBluetoothAdapter(BluetoothAdapter adapter) {
  62         this.adapters.add(adapter);
  63
  64         roamingAdapters.forEach(ra -> {
  65             ra.addBluetoothAdapter(adapter);
  66         });
  67     }
  68
  69     protected void removeBluetoothAdapter(BluetoothAdapter adapter) {
  70         this.adapters.remove(adapter);
  71
  72         roamingAdapters.forEach(ra -> {
  73             ra.removeBluetoothAdapter(adapter);
  74         });
  75     }
  76
  77     @Override
  78     public Set<ThingTypeUID> getSupportedThingTypeUIDs() {
  79         return Collections.emptySet();
  80     }
  81
  82     @Override
  83     public @Nullable DiscoveryResult createResult(BluetoothDiscoveryDevice device) {
  84         return null;
  85     }
  86
  87     @Override
  88     public @Nullable ThingUID getThingUID(BluetoothDiscoveryDevice device) {
  89         return null;
  90     }
  91
  92     @Override
  93     public void publishAdditionalResults(DiscoveryResult result,
  94             BiConsumer<BluetoothAdapter, DiscoveryResult> publisher) {
  95         // we create a roaming version of every discoveryResult.
  96         roamingAdapters.forEach(roamingAdapter -> {
  97             ThingUID adapterUID = result.getBridgeUID();
  98             if (adapterUID != null && roamingAdapter.isDiscoveryEnabled()
  99                     && roamingAdapter.isRoamingMember(adapterUID)) {
 100                 publisher.accept(roamingAdapter, result);
 101             }
 102         });
 103     }
 104 }