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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.Collections;
  19 import java.util.HashMap;
  20 import java.util.Map;
  21 import java.util.Set;
  22 import java.util.regex.Pattern;
  23
  24 import javax.jmdns.ServiceInfo;
  25
  26 import org.eclipse.jdt.annotation.NonNullByDefault;
  27 import org.eclipse.jdt.annotation.Nullable;
  28 import org.openhab.core.config.discovery.DiscoveryResult;
  29 import org.openhab.core.config.discovery.DiscoveryResultBuilder;
  30 import org.openhab.core.config.discovery.mdns.MDNSDiscoveryParticipant;
  31 import org.openhab.core.thing.ThingTypeUID;
  32 import org.openhab.core.thing.ThingUID;
  33 import org.osgi.service.component.annotations.Component;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 /**
  38  * The {@link DraytonWiserMDNSDiscoveryParticipant} is responsible for discovering Drayton Wiser Heat Hubs. It uses the
  39  * central MDNS Discovery Service.
  40  *
  41  * @author Andrew Schofield - Initial contribution
  42  *
  43  */
  44 @NonNullByDefault
  45 @Component(service = MDNSDiscoveryParticipant.class, configurationPid = "mdnsdiscovery.draytonwiser")
  46 public class DraytonWiserMDNSDiscoveryParticipant implements MDNSDiscoveryParticipant {
  47
  48     private final Logger logger = LoggerFactory.getLogger(DraytonWiserMDNSDiscoveryParticipant.class);
  49     private final Pattern findIllegalChars = Pattern.compile("[^A-Za-z0-9_-]");
  50
  51     @Override
  52     public Set<ThingTypeUID> getSupportedThingTypeUIDs() {
  53         return Collections.singleton(THING_TYPE_BRIDGE);
  54     }
  55
  56     @Override
  57     public String getServiceType() {
  58         return "_http._tcp.local.";
  59     }
  60
  61     @Override
  62     public @Nullable DiscoveryResult createResult(final ServiceInfo service) {
  63         if (service.getApplication().contains("http")) {
  64             final ThingUID uid = getThingUID(service);
  65
  66             if (uid != null) {
  67                 logger.debug("Discovered Heat Hub '{}' with uid: {}", service.getName(), uid);
  68                 final Map<String, Object> properties = new HashMap<>(2);
  69                 final InetAddress[] addresses = service.getInetAddresses();
  70
  71                 if (addresses.length > 0 && addresses[0] != null) {
  72                     properties.put(PROP_ADDRESS, addresses[0].getHostAddress());
  73                     properties.put(REFRESH_INTERVAL, DEFAULT_REFRESH_SECONDS);
  74
  75                     return DiscoveryResultBuilder.create(uid).withProperties(properties)
  76                             .withRepresentationProperty(PROP_ADDRESS).withLabel("Heat Hub - " + service.getName())
  77                             .build();
  78                 }
  79
  80             }
  81         }
  82         return null;
  83     }
  84
  85     @Override
  86     public @Nullable ThingUID getThingUID(final ServiceInfo service) {
  87         if (service.getType() != null && service.getType().equals(getServiceType())
  88                 && service.getName().contains("WiserHeat")) {
  89             logger.trace("Discovered a Drayton Wiser Heat Hub thing with name '{}'", service.getName());
  90             return new ThingUID(THING_TYPE_BRIDGE, findIllegalChars.matcher(service.getName()).replaceAll(""));
  91         }
  92         return null;
  93     }
  94 }