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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.smaenergymeter.internal.discovery;
  14
  15 import static org.openhab.binding.smaenergymeter.internal.SMAEnergyMeterBindingConstants.*;
  16
  17 import java.io.IOException;
  18 import java.util.HashMap;
  19 import java.util.Map;
  20 import java.util.Set;
  21 import java.util.concurrent.TimeUnit;
  22
  23 import org.openhab.binding.smaenergymeter.internal.handler.EnergyMeter;
  24 import org.openhab.core.config.discovery.AbstractDiscoveryService;
  25 import org.openhab.core.config.discovery.DiscoveryResult;
  26 import org.openhab.core.config.discovery.DiscoveryResultBuilder;
  27 import org.openhab.core.config.discovery.DiscoveryService;
  28 import org.openhab.core.thing.Thing;
  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 SMAEnergyMeterDiscoveryService} class implements a service
  37  * for discovering the SMA Energy Meter.
  38  *
  39  * @author Osman Basha - Initial contribution
  40  */
  41 @Component(service = DiscoveryService.class, configurationPid = "discovery.smaenergymeter")
  42 public class SMAEnergyMeterDiscoveryService extends AbstractDiscoveryService {
  43
  44     private final Logger logger = LoggerFactory.getLogger(SMAEnergyMeterDiscoveryService.class);
  45
  46     public SMAEnergyMeterDiscoveryService() {
  47         super(SUPPORTED_THING_TYPES_UIDS, 15, true);
  48     }
  49
  50     @Override
  51     public Set<ThingTypeUID> getSupportedThingTypes() {
  52         return SUPPORTED_THING_TYPES_UIDS;
  53     }
  54
  55     @Override
  56     protected void startBackgroundDiscovery() {
  57         logger.debug("Start SMAEnergyMeter background discovery");
  58         scheduler.schedule(this::discover, 0, TimeUnit.SECONDS);
  59     }
  60
  61     @Override
  62     public void startScan() {
  63         logger.debug("Start SMAEnergyMeter scan");
  64         discover();
  65     }
  66
  67     private synchronized void discover() {
  68         logger.debug("Try to discover a SMA Energy Meter device");
  69
  70         EnergyMeter energyMeter = new EnergyMeter(EnergyMeter.DEFAULT_MCAST_GRP, EnergyMeter.DEFAULT_MCAST_PORT);
  71         try {
  72             energyMeter.update();
  73         } catch (IOException e) {
  74             logger.debug("No SMA Energy Meter found.");
  75             logger.debug("Diagnostic: ", e);
  76             return;
  77         }
  78
  79         logger.debug("Adding a new SMA Engergy Meter with S/N '{}' to inbox", energyMeter.getSerialNumber());
  80         Map<String, Object> properties = new HashMap<>();
  81         properties.put(Thing.PROPERTY_VENDOR, "SMA");
  82         properties.put(Thing.PROPERTY_SERIAL_NUMBER, energyMeter.getSerialNumber());
  83         ThingUID uid = new ThingUID(THING_TYPE_ENERGY_METER, energyMeter.getSerialNumber());
  84         DiscoveryResult result = DiscoveryResultBuilder.create(uid).withProperties(properties)
  85                 .withLabel("SMA Energy Meter").build();
  86         thingDiscovered(result);
  87
  88         logger.debug("Thing discovered '{}'", result);
  89     }
  90 }