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   1 /**
   2  * Copyright (c) 2010-2020 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.apache.commons.lang.StringUtils;
  23 import org.openhab.binding.digitalstrom.internal.DigitalSTROMBindingConstants;
  24 import org.openhab.binding.digitalstrom.internal.lib.config.Config;
  25 import org.openhab.binding.digitalstrom.internal.lib.serverconnection.DsAPI;
  26 import org.openhab.binding.digitalstrom.internal.lib.serverconnection.constants.JSONApiResponseKeysEnum;
  27 import org.openhab.binding.digitalstrom.internal.lib.serverconnection.impl.DsAPIImpl;
  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 BridgeMDNSDiscoveryParticipant} is responsible for discovering digitalSTROM-Server. It uses the central
  39  * {@link MDNSDiscoveryService}.
  40  *
  41  * @author Michael Ochel - Initial contribution
  42  * @author Matthias Siegele - Initial contribution
  43  *
  44  */
  45 @Component(service = MDNSDiscoveryParticipant.class)
  46 public class BridgeMDNSDiscoveryParticipant implements MDNSDiscoveryParticipant {
  47
  48     private final Logger logger = LoggerFactory.getLogger(BridgeMDNSDiscoveryParticipant.class);
  49
  50     @Override
  51     public Set<ThingTypeUID> getSupportedThingTypeUIDs() {
  52         return Collections.singleton(DigitalSTROMBindingConstants.THING_TYPE_DSS_BRIDGE);
  53     }
  54
  55     @Override
  56     public String getServiceType() {
  57         return "_tcp.local.";
  58     }
  59
  60     @Override
  61     public DiscoveryResult createResult(ServiceInfo service) {
  62         if (service.getApplication().contains("dssweb")) {
  63             ThingUID uid = getThingUID(service);
  64
  65             if (uid != null) {
  66                 String hostAddress = service.getName() + "." + service.getDomain() + ".";
  67                 Map<String, Object> properties = new HashMap<>(2);
  68                 properties.put(DigitalSTROMBindingConstants.HOST, hostAddress);
  69                 return DiscoveryResultBuilder.create(uid).withProperties(properties)
  70                         .withRepresentationProperty(uid.getId()).withLabel("digitalSTROM-Server").build();
  71             }
  72         }
  73         return null;
  74     }
  75
  76     @Override
  77     public ThingUID getThingUID(ServiceInfo service) {
  78         if (service.getApplication().contains("dssweb")) {
  79             String hostAddress = service.getName() + "." + service.getDomain() + ".";
  80             DsAPI digitalSTROMClient = new DsAPIImpl(hostAddress, Config.DEFAULT_CONNECTION_TIMEOUT,
  81                     Config.DEFAULT_READ_TIMEOUT, true);
  82             Map<String, String> dsidMap = digitalSTROMClient.getDSID(null);
  83             String dSID = null;
  84             if (dsidMap != null) {
  85                 dSID = dsidMap.get(JSONApiResponseKeysEnum.DSID.getKey());
  86             }
  87             if (StringUtils.isNotBlank(dSID)) {
  88                 return new ThingUID(DigitalSTROMBindingConstants.THING_TYPE_DSS_BRIDGE, dSID);
  89             } else {
  90                 logger.error("Can't get server dSID to generate thing UID. Please add the server manually.");
  91             }
  92         }
  93         return null;
  94     }
  95 }