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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.Collections;
  16 import java.util.HashMap;
  17 import java.util.Map;
  18 import java.util.Set;
  19
  20 import javax.jmdns.ServiceInfo;
  21
  22 import org.openhab.binding.digitalstrom.internal.DigitalSTROMBindingConstants;
  23 import org.openhab.binding.digitalstrom.internal.lib.config.Config;
  24 import org.openhab.binding.digitalstrom.internal.lib.serverconnection.DsAPI;
  25 import org.openhab.binding.digitalstrom.internal.lib.serverconnection.constants.JSONApiResponseKeysEnum;
  26 import org.openhab.binding.digitalstrom.internal.lib.serverconnection.impl.DsAPIImpl;
  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 BridgeMDNSDiscoveryParticipant} is responsible for discovering digitalSTROM-Server. It uses the central
  38  * {@link MDNSDiscoveryService}.
  39  *
  40  * @author Michael Ochel - Initial contribution
  41  * @author Matthias Siegele - Initial contribution
  42  *
  43  */
  44 @Component(service = MDNSDiscoveryParticipant.class)
  45 public class BridgeMDNSDiscoveryParticipant implements MDNSDiscoveryParticipant {
  46
  47     private final Logger logger = LoggerFactory.getLogger(BridgeMDNSDiscoveryParticipant.class);
  48
  49     @Override
  50     public Set<ThingTypeUID> getSupportedThingTypeUIDs() {
  51         return Collections.singleton(DigitalSTROMBindingConstants.THING_TYPE_DSS_BRIDGE);
  52     }
  53
  54     @Override
  55     public String getServiceType() {
  56         return "_tcp.local.";
  57     }
  58
  59     @Override
  60     public DiscoveryResult createResult(ServiceInfo service) {
  61         if (service.getApplication().contains("dssweb")) {
  62             ThingUID uid = getThingUID(service);
  63
  64             if (uid != null) {
  65                 String hostAddress = service.getName() + "." + service.getDomain() + ".";
  66                 Map<String, Object> properties = new HashMap<>(2);
  67                 properties.put(DigitalSTROMBindingConstants.HOST, hostAddress);
  68                 return DiscoveryResultBuilder.create(uid).withProperties(properties)
  69                         .withRepresentationProperty(uid.getId()).withLabel("digitalSTROM-Server").build();
  70             }
  71         }
  72         return null;
  73     }
  74
  75     @Override
  76     public ThingUID getThingUID(ServiceInfo service) {
  77         if (service.getApplication().contains("dssweb")) {
  78             String hostAddress = service.getName() + "." + service.getDomain() + ".";
  79             DsAPI digitalSTROMClient = new DsAPIImpl(hostAddress, Config.DEFAULT_CONNECTION_TIMEOUT,
  80                     Config.DEFAULT_READ_TIMEOUT, true);
  81             Map<String, String> dsidMap = digitalSTROMClient.getDSID(null);
  82             String dSID = null;
  83             if (dsidMap != null) {
  84                 dSID = dsidMap.get(JSONApiResponseKeysEnum.DSID.getKey());
  85             }
  86             if (dSID != null && !dSID.isBlank()) {
  87                 return new ThingUID(DigitalSTROMBindingConstants.THING_TYPE_DSS_BRIDGE, dSID);
  88             } else {
  89                 logger.error("Can't get server dSID to generate thing UID. Please add the server manually.");
  90             }
  91         }
  92         return null;
  93     }
  94 }