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   1 /**
   2  * Copyright (c) 2010-2023 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.hdpowerview.internal.discovery;
  14
  15 import static org.openhab.binding.hdpowerview.internal.HDPowerViewBindingConstants.*;
  16
  17 import java.util.Collections;
  18 import java.util.Set;
  19 import java.util.regex.Pattern;
  20
  21 import javax.jmdns.ServiceInfo;
  22
  23 import org.eclipse.jdt.annotation.NonNullByDefault;
  24 import org.eclipse.jdt.annotation.Nullable;
  25 import org.openhab.binding.hdpowerview.internal.config.HDPowerViewHubConfiguration;
  26 import org.openhab.core.config.discovery.DiscoveryResult;
  27 import org.openhab.core.config.discovery.DiscoveryResultBuilder;
  28 import org.openhab.core.config.discovery.mdns.MDNSDiscoveryParticipant;
  29 import org.openhab.core.thing.ThingTypeUID;
  30 import org.openhab.core.thing.ThingUID;
  31 import org.osgi.service.component.annotations.Component;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 /**
  36  * Discovers HD PowerView hubs by means of mDNS
  37  *
  38  * @author Andrew Fiddian-Green - Initial contribution
  39  */
  40 @NonNullByDefault
  41 @Component
  42 public class HDPowerViewHubDiscoveryParticipant implements MDNSDiscoveryParticipant {
  43
  44     private final Logger logger = LoggerFactory.getLogger(HDPowerViewHubDiscoveryParticipant.class);
  45
  46     private static final Pattern VALID_IP_V4_ADDRESS = Pattern
  47             .compile("\\b((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)(\\.|$)){4}\\b");
  48
  49     @Override
  50     public Set<ThingTypeUID> getSupportedThingTypeUIDs() {
  51         return Collections.singleton(THING_TYPE_HUB);
  52     }
  53
  54     @Override
  55     public String getServiceType() {
  56         return "_powerview._tcp.local.";
  57     }
  58
  59     @Override
  60     public @Nullable DiscoveryResult createResult(ServiceInfo service) {
  61         for (String host : service.getHostAddresses()) {
  62             if (VALID_IP_V4_ADDRESS.matcher(host).matches()) {
  63                 ThingUID thingUID = new ThingUID(THING_TYPE_HUB, host.replace('.', '_'));
  64                 DiscoveryResult hub = DiscoveryResultBuilder.create(thingUID)
  65                         .withProperty(HDPowerViewHubConfiguration.HOST, host)
  66                         .withRepresentationProperty(HDPowerViewHubConfiguration.HOST)
  67                         .withLabel("PowerView Hub (" + host + ")").build();
  68                 logger.debug("mDNS discovered hub on host '{}'", host);
  69                 return hub;
  70             }
  71         }
  72         return null;
  73     }
  74
  75     @Override
  76     public @Nullable ThingUID getThingUID(ServiceInfo service) {
  77         for (String host : service.getHostAddresses()) {
  78             if (VALID_IP_V4_ADDRESS.matcher(host).matches()) {
  79                 return new ThingUID(THING_TYPE_HUB, host.replace('.', '_'));
  80             }
  81         }
  82         return null;
  83     }
  84 }