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   1 /**
   2  * Copyright (c) 2010-2022 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.net.HttpURLConnection;
  16 import java.util.Arrays;
  17 import java.util.HashMap;
  18 import java.util.HashSet;
  19 import java.util.Map;
  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.AbstractDiscoveryService;
  27 import org.openhab.core.config.discovery.DiscoveryResult;
  28 import org.openhab.core.config.discovery.DiscoveryResultBuilder;
  29 import org.openhab.core.config.discovery.DiscoveryService;
  30 import org.openhab.core.thing.ThingUID;
  31 import org.osgi.service.component.annotations.Activate;
  32 import org.osgi.service.component.annotations.Component;
  33 import org.osgi.service.component.annotations.Deactivate;
  34 import org.osgi.service.component.annotations.Modified;
  35 import org.slf4j.Logger;
  36 import org.slf4j.LoggerFactory;
  37
  38 /**
  39  * The {@link BridgeDiscoveryService} is responsible for discovering digitalSTROM-Server, if the server is in the
  40  * local network and is reachable through "dss.local." with default port number "8080". It uses the central
  41  * {@link AbstractDiscoveryService}.
  42  *
  43  * @author Michael Ochel - Initial contribution
  44  * @author Matthias Siegele - Initial contribution
  45  */
  46 @Component(service = DiscoveryService.class, configurationPid = "discovery.digitalstrom")
  47 public class BridgeDiscoveryService extends AbstractDiscoveryService {
  48
  49     private final Logger logger = LoggerFactory.getLogger(BridgeDiscoveryService.class);
  50     public static final String HOST_ADDRESS = "dss.local.";
  51
  52     private final Runnable resultCreater = new Runnable() {
  53
  54         @Override
  55         public void run() {
  56             createResult();
  57         }
  58
  59         private void createResult() {
  60             ThingUID uid = getThingUID();
  61
  62             if (uid != null) {
  63                 Map<String, Object> properties = new HashMap<>(2);
  64                 properties.put(DigitalSTROMBindingConstants.HOST, HOST_ADDRESS);
  65                 DiscoveryResult result = DiscoveryResultBuilder.create(uid).withProperties(properties)
  66                         .withLabel("digitalSTROM-Server").build();
  67                 thingDiscovered(result);
  68             }
  69         }
  70
  71         private ThingUID getThingUID() {
  72             DsAPI digitalSTROMClient = new DsAPIImpl(HOST_ADDRESS, Config.DEFAULT_CONNECTION_TIMEOUT,
  73                     Config.DEFAULT_READ_TIMEOUT, true);
  74             String dSID = null;
  75             switch (digitalSTROMClient.checkConnection("123")) {
  76                 case HttpURLConnection.HTTP_OK:
  77                 case HttpURLConnection.HTTP_UNAUTHORIZED:
  78                 case HttpURLConnection.HTTP_FORBIDDEN:
  79                     Map<String, String> dsidMap = digitalSTROMClient.getDSID(null);
  80                     if (dsidMap != null) {
  81                         dSID = dsidMap.get(JSONApiResponseKeysEnum.DSID.getKey());
  82                     }
  83                     if (dSID != null && !dSID.isBlank()) {
  84                         return new ThingUID(DigitalSTROMBindingConstants.THING_TYPE_DSS_BRIDGE, dSID);
  85                     } else {
  86                         logger.error("Can't get server dSID to generate ThingUID. Please add the server manually.");
  87                     }
  88             }
  89             return null;
  90         }
  91     };
  92
  93     /**
  94      * Creates a new {@link BridgeDiscoveryService}.
  95      */
  96     public BridgeDiscoveryService() {
  97         super(new HashSet<>(Arrays.asList(DigitalSTROMBindingConstants.THING_TYPE_DSS_BRIDGE)), 10, false);
  98     }
  99
 100     @Activate
 101     @Override
 102     protected void activate(Map<String, Object> configProperties) {
 103         super.activate(configProperties);
 104     }
 105
 106     @Deactivate
 107     @Override
 108     protected void deactivate() {
 109         super.deactivate();
 110     }
 111
 112     @Modified
 113     @Override
 114     protected void modified(Map<String, Object> configProperties) {
 115         super.modified(configProperties);
 116     }
 117
 118     @Override
 119     protected void startScan() {
 120         scheduler.execute(resultCreater);
 121     }
 122 }