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