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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.digitalstrom.internal.discovery;
  14
  15 import java.util.HashMap;
  16 import java.util.Map;
  17 import java.util.Set;
  18
  19 import javax.jmdns.ServiceInfo;
  20
  21 import org.openhab.binding.digitalstrom.internal.DigitalSTROMBindingConstants;
  22 import org.openhab.binding.digitalstrom.internal.lib.config.Config;
  23 import org.openhab.binding.digitalstrom.internal.lib.serverconnection.DsAPI;
  24 import org.openhab.binding.digitalstrom.internal.lib.serverconnection.constants.JSONApiResponseKeysEnum;
  25 import org.openhab.binding.digitalstrom.internal.lib.serverconnection.impl.DsAPIImpl;
  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  * The {@link BridgeMDNSDiscoveryParticipant} is responsible for discovering digitalSTROM-Server. It uses the central
  37  * {@link MDNSDiscoveryService}.
  38  *
  39  * @author Michael Ochel - Initial contribution
  40  * @author Matthias Siegele - Initial contribution
  41  *
  42  */
  43 @Component(service = MDNSDiscoveryParticipant.class)
  44 public class BridgeMDNSDiscoveryParticipant implements MDNSDiscoveryParticipant {
  45
  46     private final Logger logger = LoggerFactory.getLogger(BridgeMDNSDiscoveryParticipant.class);
  47
  48     @Override
  49     public Set<ThingTypeUID> getSupportedThingTypeUIDs() {
  50         return Set.of(DigitalSTROMBindingConstants.THING_TYPE_DSS_BRIDGE);
  51     }
  52
  53     @Override
  54     public String getServiceType() {
  55         return "_tcp.local.";
  56     }
  57
  58     @Override
  59     public DiscoveryResult createResult(ServiceInfo service) {
  60         if (service.getApplication().contains("dssweb")) {
  61             ThingUID uid = getThingUID(service);
  62
  63             if (uid != null) {
  64                 String hostAddress = service.getName() + "." + service.getDomain() + ".";
  65                 Map<String, Object> properties = new HashMap<>(2);
  66                 properties.put(DigitalSTROMBindingConstants.HOST, hostAddress);
  67                 return DiscoveryResultBuilder.create(uid).withProperties(properties)
  68                         .withRepresentationProperty(uid.getId()).withLabel("digitalSTROM-Server").build();
  69             }
  70         }
  71         return null;
  72     }
  73
  74     @Override
  75     public ThingUID getThingUID(ServiceInfo service) {
  76         if (service.getApplication().contains("dssweb")) {
  77             String hostAddress = service.getName() + "." + service.getDomain() + ".";
  78             DsAPI digitalSTROMClient = new DsAPIImpl(hostAddress, Config.DEFAULT_CONNECTION_TIMEOUT,
  79                     Config.DEFAULT_READ_TIMEOUT, true);
  80             Map<String, String> dsidMap = digitalSTROMClient.getDSID(null);
  81             String dSID = null;
  82             if (dsidMap != null) {
  83                 dSID = dsidMap.get(JSONApiResponseKeysEnum.DSID.getKey());
  84             }
  85             if (dSID != null && !dSID.isBlank()) {
  86                 return new ThingUID(DigitalSTROMBindingConstants.THING_TYPE_DSS_BRIDGE, dSID);
  87             } else {
  88                 logger.error("Can't get server dSID to generate thing UID. Please add the server manually.");
  89             }
  90         }
  91         return null;
  92     }
  93 }