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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.draytonwiser.internal.discovery;
  14
  15 import static org.openhab.binding.draytonwiser.internal.DraytonWiserBindingConstants.*;
  16
  17 import java.net.InetAddress;
  18 import java.util.HashMap;
  19 import java.util.Map;
  20 import java.util.Set;
  21 import java.util.regex.Pattern;
  22
  23 import javax.jmdns.ServiceInfo;
  24
  25 import org.eclipse.jdt.annotation.NonNullByDefault;
  26 import org.eclipse.jdt.annotation.Nullable;
  27 import org.openhab.core.config.discovery.DiscoveryResult;
  28 import org.openhab.core.config.discovery.DiscoveryResultBuilder;
  29 import org.openhab.core.config.discovery.mdns.MDNSDiscoveryParticipant;
  30 import org.openhab.core.thing.ThingTypeUID;
  31 import org.openhab.core.thing.ThingUID;
  32 import org.osgi.service.component.annotations.Component;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35
  36 /**
  37  * The {@link DraytonWiserMDNSDiscoveryParticipant} is responsible for discovering Drayton Wiser Heat Hubs. It uses the
  38  * central MDNS Discovery Service.
  39  *
  40  * @author Andrew Schofield - Initial contribution
  41  *
  42  */
  43 @NonNullByDefault
  44 @Component(service = MDNSDiscoveryParticipant.class, configurationPid = "mdnsdiscovery.draytonwiser")
  45 public class DraytonWiserMDNSDiscoveryParticipant implements MDNSDiscoveryParticipant {
  46
  47     private final Logger logger = LoggerFactory.getLogger(DraytonWiserMDNSDiscoveryParticipant.class);
  48     private final Pattern findIllegalChars = Pattern.compile("[^A-Za-z0-9_-]");
  49
  50     @Override
  51     public Set<ThingTypeUID> getSupportedThingTypeUIDs() {
  52         return Set.of(THING_TYPE_BRIDGE);
  53     }
  54
  55     @Override
  56     public String getServiceType() {
  57         return "_http._tcp.local.";
  58     }
  59
  60     @Override
  61     public @Nullable DiscoveryResult createResult(final ServiceInfo service) {
  62         if (service.getApplication().contains("http")) {
  63             final ThingUID uid = getThingUID(service);
  64
  65             if (uid != null) {
  66                 logger.debug("Discovered Heat Hub '{}' with uid: {}", service.getName(), uid);
  67                 final Map<String, Object> properties = new HashMap<>(2);
  68                 final InetAddress[] addresses = service.getInetAddresses();
  69
  70                 if (addresses.length > 0 && addresses[0] != null) {
  71                     properties.put(PROP_ADDRESS, addresses[0].getHostAddress());
  72                     properties.put(REFRESH_INTERVAL, DEFAULT_REFRESH_SECONDS);
  73
  74                     return DiscoveryResultBuilder.create(uid).withProperties(properties)
  75                             .withRepresentationProperty(PROP_ADDRESS).withLabel("Heat Hub - " + service.getName())
  76                             .build();
  77                 }
  78
  79             }
  80         }
  81         return null;
  82     }
  83
  84     @Override
  85     public @Nullable ThingUID getThingUID(final ServiceInfo service) {
  86         if (service.getType() != null && service.getType().equals(getServiceType())
  87                 && service.getName().contains("WiserHeat")) {
  88             logger.trace("Discovered a Drayton Wiser Heat Hub thing with name '{}'", service.getName());
  89             return new ThingUID(THING_TYPE_BRIDGE, findIllegalChars.matcher(service.getName()).replaceAll(""));
  90         }
  91         return null;
  92     }
  93 }