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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.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
  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
  49     @Override
  50     public Set<ThingTypeUID> getSupportedThingTypeUIDs() {
  51         return Collections.singleton(THING_TYPE_BRIDGE);
  52     }
  53
  54     @Override
  55     public String getServiceType() {
  56         return "_http._tcp.local.";
  57     }
  58
  59     @Override
  60     public @Nullable DiscoveryResult createResult(final ServiceInfo service) {
  61         if (service.getApplication().contains("http")) {
  62             final ThingUID uid = getThingUID(service);
  63
  64             if (uid != null) {
  65                 logger.debug("Discovered Heat Hub '{}' with uid: {}", service.getName(), uid);
  66                 final Map<String, Object> properties = new HashMap<>(2);
  67                 final InetAddress[] addresses = service.getInetAddresses();
  68
  69                 if (addresses.length > 0 && addresses[0] != null) {
  70                     properties.put(PROP_ADDRESS, addresses[0].getHostAddress());
  71                     properties.put(REFRESH_INTERVAL, DEFAULT_REFRESH_SECONDS);
  72                 }
  73
  74                 return DiscoveryResultBuilder.create(uid).withProperties(properties)
  75                         .withRepresentationProperty(PROP_ADDRESS).withLabel("Heat Hub - " + service.getName()).build();
  76             }
  77         }
  78         return null;
  79     }
  80
  81     @Override
  82     public @Nullable ThingUID getThingUID(final ServiceInfo service) {
  83         if (service.getType() != null && service.getType().equals(getServiceType())
  84                 && service.getName().contains("WiserHeat")) {
  85             logger.trace("Discovered a Drayton Wiser Heat Hub thing with name '{}'", service.getName());
  86             return new ThingUID(THING_TYPE_BRIDGE, service.getName());
  87         }
  88         return null;
  89     }
  90 }