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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.elroconnects.internal.discovery;
  14
  15 import static org.openhab.binding.elroconnects.internal.ElroConnectsBindingConstants.*;
  16
  17 import java.time.Instant;
  18 import java.util.Map;
  19 import java.util.concurrent.ScheduledFuture;
  20 import java.util.concurrent.TimeUnit;
  21
  22 import org.eclipse.jdt.annotation.NonNullByDefault;
  23 import org.eclipse.jdt.annotation.Nullable;
  24 import org.openhab.binding.elroconnects.internal.ElroConnectsBindingConstants;
  25 import org.openhab.binding.elroconnects.internal.ElroConnectsBindingConstants.ElroDeviceType;
  26 import org.openhab.binding.elroconnects.internal.devices.ElroConnectsDevice;
  27 import org.openhab.binding.elroconnects.internal.handler.ElroConnectsBridgeHandler;
  28 import org.openhab.core.config.discovery.AbstractDiscoveryService;
  29 import org.openhab.core.config.discovery.DiscoveryResultBuilder;
  30 import org.openhab.core.thing.ThingTypeUID;
  31 import org.openhab.core.thing.ThingUID;
  32 import org.openhab.core.thing.binding.ThingHandler;
  33 import org.openhab.core.thing.binding.ThingHandlerService;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 /**
  38  * The {@link ElroConnectsDiscoveryService} discovers devices connected to the ELRO Connects K1 Controller.
  39  *
  40  * @author Mark Herwege - Initial contribution
  41  */
  42 @NonNullByDefault
  43 public class ElroConnectsDiscoveryService extends AbstractDiscoveryService implements ThingHandlerService {
  44
  45     private final Logger logger = LoggerFactory.getLogger(ElroConnectsDiscoveryService.class);
  46
  47     private @Nullable ElroConnectsBridgeHandler bridgeHandler;
  48
  49     private static final int TIMEOUT_S = 5;
  50     private static final int REFRESH_INTERVAL_S = 60;
  51
  52     private @Nullable ScheduledFuture<?> discoveryJob;
  53
  54     public ElroConnectsDiscoveryService() {
  55         super(ElroConnectsBindingConstants.SUPPORTED_DEVICE_TYPES_UIDS, TIMEOUT_S);
  56         logger.debug("Discovery service started");
  57     }
  58
  59     @Override
  60     protected void startScan() {
  61         discoverDevices();
  62     }
  63
  64     private void discoverDevices() {
  65         logger.debug("Starting device discovery scan");
  66         ElroConnectsBridgeHandler bridge = bridgeHandler;
  67         if (bridge != null) {
  68             Map<Integer, ElroConnectsDevice> devices = bridge.getDevices();
  69             ThingUID bridgeUID = bridge.getThing().getUID();
  70             devices.entrySet().forEach(e -> {
  71                 String deviceId = e.getKey().toString();
  72                 String deviceName = e.getValue().getDeviceName();
  73                 String deviceType = e.getValue().getDeviceType();
  74                 if (!deviceType.isEmpty()) {
  75                     ElroDeviceType type = TYPE_MAP.get(deviceType);
  76                     if (type != null) {
  77                         ThingTypeUID thingTypeUID = THING_TYPE_MAP.get(type);
  78                         if (thingTypeUID != null) {
  79                             thingDiscovered(DiscoveryResultBuilder
  80                                     .create(new ThingUID(thingTypeUID, bridgeUID, deviceId)).withLabel(deviceName)
  81                                     .withBridge(bridgeUID).withProperty(CONFIG_DEVICE_ID, deviceId)
  82                                     .withRepresentationProperty(CONFIG_DEVICE_ID).build());
  83                         }
  84                     }
  85                 }
  86             });
  87         }
  88     }
  89
  90     @Override
  91     protected synchronized void stopScan() {
  92         super.stopScan();
  93         removeOlderResults(getTimestampOfLastScan());
  94     }
  95
  96     @Override
  97     public void startBackgroundDiscovery() {
  98         logger.debug("Start device background discovery");
  99         ScheduledFuture<?> job = discoveryJob;
 100         if (job == null || job.isCancelled()) {
 101             discoveryJob = scheduler.scheduleWithFixedDelay(this::discoverDevices, 0, REFRESH_INTERVAL_S,
 102                     TimeUnit.SECONDS);
 103         }
 104     }
 105
 106     @Override
 107     protected void stopBackgroundDiscovery() {
 108         logger.debug("Stop device background discovery");
 109         ScheduledFuture<?> job = discoveryJob;
 110         if (job != null && !job.isCancelled()) {
 111             job.cancel(true);
 112             discoveryJob = null;
 113         }
 114     }
 115
 116     @Override
 117     public void deactivate() {
 118         removeOlderResults(Instant.now().toEpochMilli());
 119         super.deactivate();
 120     }
 121
 122     @Override
 123     public void setThingHandler(@Nullable ThingHandler handler) {
 124         if (handler instanceof ElroConnectsBridgeHandler bridgeHandler) {
 125             this.bridgeHandler = bridgeHandler;
 126             bridgeHandler.setDiscoveryService(this);
 127         }
 128     }
 129
 130     @Override
 131     public @Nullable ThingHandler getThingHandler() {
 132         return bridgeHandler;
 133     }
 134 }