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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.amplipi.internal.discovery;
  14
  15 import java.util.Set;
  16
  17 import javax.jmdns.ServiceInfo;
  18
  19 import org.eclipse.jdt.annotation.NonNullByDefault;
  20 import org.eclipse.jdt.annotation.Nullable;
  21 import org.openhab.binding.amplipi.internal.AmpliPiBindingConstants;
  22 import org.openhab.core.config.discovery.DiscoveryResult;
  23 import org.openhab.core.config.discovery.DiscoveryResultBuilder;
  24 import org.openhab.core.config.discovery.mdns.MDNSDiscoveryParticipant;
  25 import org.openhab.core.thing.ThingTypeUID;
  26 import org.openhab.core.thing.ThingUID;
  27
  28 /**
  29  * This is a discovery participant which finds AmpliPis on the local network
  30  * through their mDNS announcements.
  31  *
  32  * @author Kai Kreuzer - Initial contribution
  33  *
  34  */
  35 @NonNullByDefault
  36 public class AmpliPiMDNSDiscoveryParticipant implements MDNSDiscoveryParticipant {
  37
  38     @Override
  39     public Set<ThingTypeUID> getSupportedThingTypeUIDs() {
  40         return Set.of(AmpliPiBindingConstants.THING_TYPE_CONTROLLER);
  41     }
  42
  43     @Override
  44     public String getServiceType() {
  45         return "_http._tcp";
  46     }
  47
  48     @Override
  49     public @Nullable DiscoveryResult createResult(ServiceInfo service) {
  50         ThingUID uid = getThingUID(service);
  51         if (uid != null) {
  52             DiscoveryResult result = DiscoveryResultBuilder.create(uid).withLabel(service.getName())
  53                     .withProperty(AmpliPiBindingConstants.CFG_PARAM_HOSTNAME,
  54                             service.getInet4Addresses()[0].getHostAddress())
  55                     .withRepresentationProperty(AmpliPiBindingConstants.CFG_PARAM_HOSTNAME).build();
  56             return result;
  57         } else {
  58             return null;
  59         }
  60     }
  61
  62     @Override
  63     public @Nullable ThingUID getThingUID(ServiceInfo service) {
  64         // TODO: Currently, the AmpliPi does not seem to announce any services.
  65         return null;
  66     }
  67 }