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   1 /**
   2  * Copyright (c) 2010-2021 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.hdpowerview.internal.discovery;
  14
  15 import java.util.Collections;
  16 import java.util.List;
  17 import java.util.concurrent.ScheduledFuture;
  18 import java.util.concurrent.TimeUnit;
  19
  20 import org.eclipse.jdt.annotation.NonNullByDefault;
  21 import org.eclipse.jdt.annotation.Nullable;
  22 import org.openhab.binding.hdpowerview.internal.HDPowerViewBindingConstants;
  23 import org.openhab.binding.hdpowerview.internal.HDPowerViewWebTargets;
  24 import org.openhab.binding.hdpowerview.internal.HubMaintenanceException;
  25 import org.openhab.binding.hdpowerview.internal.HubProcessingException;
  26 import org.openhab.binding.hdpowerview.internal.api.responses.Shades;
  27 import org.openhab.binding.hdpowerview.internal.api.responses.Shades.ShadeData;
  28 import org.openhab.binding.hdpowerview.internal.config.HDPowerViewShadeConfiguration;
  29 import org.openhab.binding.hdpowerview.internal.database.ShadeCapabilitiesDatabase;
  30 import org.openhab.binding.hdpowerview.internal.database.ShadeCapabilitiesDatabase.Capabilities;
  31 import org.openhab.binding.hdpowerview.internal.handler.HDPowerViewHubHandler;
  32 import org.openhab.core.config.discovery.AbstractDiscoveryService;
  33 import org.openhab.core.config.discovery.DiscoveryResultBuilder;
  34 import org.openhab.core.thing.ThingUID;
  35 import org.slf4j.Logger;
  36 import org.slf4j.LoggerFactory;
  37
  38 import com.google.gson.JsonParseException;
  39
  40 /**
  41  * Discovers an HD PowerView Shade from an existing hub
  42  *
  43  * @author Andy Lintner - Initial contribution
  44  */
  45 @NonNullByDefault
  46 public class HDPowerViewShadeDiscoveryService extends AbstractDiscoveryService {
  47
  48     private final Logger logger = LoggerFactory.getLogger(HDPowerViewShadeDiscoveryService.class);
  49     private final HDPowerViewHubHandler hub;
  50     private final Runnable scanner;
  51     private @Nullable ScheduledFuture<?> backgroundFuture;
  52     private final ShadeCapabilitiesDatabase db = new ShadeCapabilitiesDatabase();
  53
  54     public HDPowerViewShadeDiscoveryService(HDPowerViewHubHandler hub) {
  55         super(Collections.singleton(HDPowerViewBindingConstants.THING_TYPE_SHADE), 600, true);
  56         this.hub = hub;
  57         this.scanner = createScanner();
  58     }
  59
  60     @Override
  61     protected void startScan() {
  62         scheduler.execute(scanner);
  63     }
  64
  65     @Override
  66     protected void startBackgroundDiscovery() {
  67         ScheduledFuture<?> backgroundFuture = this.backgroundFuture;
  68         if (backgroundFuture != null && !backgroundFuture.isDone()) {
  69             backgroundFuture.cancel(true);
  70         }
  71         this.backgroundFuture = scheduler.scheduleWithFixedDelay(scanner, 0, 60, TimeUnit.SECONDS);
  72     }
  73
  74     @Override
  75     protected void stopBackgroundDiscovery() {
  76         ScheduledFuture<?> backgroundFuture = this.backgroundFuture;
  77         if (backgroundFuture != null && !backgroundFuture.isDone()) {
  78             backgroundFuture.cancel(true);
  79             this.backgroundFuture = null;
  80         }
  81         super.stopBackgroundDiscovery();
  82     }
  83
  84     private Runnable createScanner() {
  85         return () -> {
  86             try {
  87                 HDPowerViewWebTargets webTargets = hub.getWebTargets();
  88                 if (webTargets == null) {
  89                     throw new HubProcessingException("Web targets not initialized");
  90                 }
  91                 Shades shades = webTargets.getShades();
  92                 if (shades != null && shades.shadeData != null) {
  93                     ThingUID bridgeUID = hub.getThing().getUID();
  94                     List<ShadeData> shadesData = shades.shadeData;
  95                     if (shadesData != null) {
  96                         for (ShadeData shadeData : shadesData) {
  97                             if (shadeData.id != 0) {
  98                                 String id = Integer.toString(shadeData.id);
  99                                 ThingUID thingUID = new ThingUID(HDPowerViewBindingConstants.THING_TYPE_SHADE,
 100                                         bridgeUID, id);
 101                                 Integer caps = shadeData.capabilities;
 102                                 Capabilities capabilities = db.getCapabilities((caps != null) ? caps.intValue() : -1);
 103
 104                                 DiscoveryResultBuilder builder = DiscoveryResultBuilder.create(thingUID)
 105                                         .withLabel(shadeData.getName()).withBridge(bridgeUID)
 106                                         .withProperty(HDPowerViewShadeConfiguration.ID, id)
 107                                         .withProperty(HDPowerViewBindingConstants.PROPERTY_SHADE_TYPE,
 108                                                 db.getType(shadeData.type).toString())
 109                                         .withProperty(HDPowerViewBindingConstants.PROPERTY_SHADE_CAPABILITIES,
 110                                                 capabilities.toString())
 111                                         .withRepresentationProperty(HDPowerViewShadeConfiguration.ID);
 112
 113                                 logger.debug("Hub discovered shade '{}'", id);
 114                                 thingDiscovered(builder.build());
 115                             }
 116                         }
 117                     }
 118                 }
 119             } catch (HubProcessingException | JsonParseException e) {
 120                 logger.warn("Unexpected error: {}", e.getMessage());
 121             } catch (HubMaintenanceException e) {
 122                 // exceptions are logged in HDPowerViewWebTargets
 123             }
 124             stopScan();
 125         };
 126     }
 127 }