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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.openwebnet.handler;
  14
  15 import static org.openhab.binding.openwebnet.OpenWebNetBindingConstants.CHANNEL_POWER;
  16
  17 import java.util.Set;
  18
  19 import javax.measure.quantity.Power;
  20
  21 import org.eclipse.jdt.annotation.NonNullByDefault;
  22 import org.openhab.binding.openwebnet.OpenWebNetBindingConstants;
  23 import org.openhab.core.library.types.QuantityType;
  24 import org.openhab.core.library.unit.Units;
  25 import org.openhab.core.thing.ChannelUID;
  26 import org.openhab.core.thing.Thing;
  27 import org.openhab.core.thing.ThingTypeUID;
  28 import org.openhab.core.types.Command;
  29 import org.openhab.core.types.UnDefType;
  30 import org.openwebnet4j.communication.OWNException;
  31 import org.openwebnet4j.message.BaseOpenMessage;
  32 import org.openwebnet4j.message.EnergyManagement;
  33 import org.openwebnet4j.message.FrameException;
  34 import org.openwebnet4j.message.Where;
  35 import org.openwebnet4j.message.WhereEnergyManagement;
  36 import org.openwebnet4j.message.Who;
  37 import org.slf4j.Logger;
  38 import org.slf4j.LoggerFactory;
  39
  40 /**
  41  * The {@link OpenWebNetEnergyHandler} is responsible for handling commands/messages for a Energy Management OpenWebNet
  42  * device. It extends the abstract {@link OpenWebNetThingHandler}.
  43  *
  44  * @author Massimo Valla - Initial contribution
  45  * @author Andrea Conte - Energy management
  46  */
  47 @NonNullByDefault
  48 public class OpenWebNetEnergyHandler extends OpenWebNetThingHandler {
  49
  50     private final Logger logger = LoggerFactory.getLogger(OpenWebNetEnergyHandler.class);
  51
  52     public final static Set<ThingTypeUID> SUPPORTED_THING_TYPES = OpenWebNetBindingConstants.ENERGY_MANAGEMENT_SUPPORTED_THING_TYPES;
  53
  54     public OpenWebNetEnergyHandler(Thing thing) {
  55         super(thing);
  56     }
  57
  58     @Override
  59     protected Where buildBusWhere(String wStr) throws IllegalArgumentException {
  60         return new WhereEnergyManagement(wStr);
  61     }
  62
  63     @Override
  64     protected void requestChannelState(ChannelUID channel) {
  65         logger.debug("requestChannelState() thingUID={} channel={}", thing.getUID(), channel.getId());
  66         try {
  67             bridgeHandler.gateway.send(EnergyManagement.requestActivePower(deviceWhere.value()));
  68         } catch (OWNException e) {
  69             logger.warn("requestChannelState() OWNException thingUID={} channel={}: {}", thing.getUID(),
  70                     channel.getId(), e.getMessage());
  71         }
  72     }
  73
  74     @Override
  75     protected void handleChannelCommand(ChannelUID channel, Command command) {
  76         logger.warn("handleChannelCommand() Read only channel, unsupported command {}", command);
  77     }
  78
  79     @Override
  80     protected String ownIdPrefix() {
  81         return Who.ENERGY_MANAGEMENT.value().toString();
  82     }
  83
  84     @Override
  85     protected void handleMessage(BaseOpenMessage msg) {
  86         super.handleMessage(msg);
  87
  88         if (msg.isCommand()) {
  89             logger.warn("handleMessage() Ignoring unsupported command for thing {}. Frame={}", getThing().getUID(),
  90                     msg);
  91             return;
  92         } else {
  93             updateActivePower(msg);
  94         }
  95     }
  96
  97     /**
  98      * Updates energy power state based on a EnergyManagement message received from the OWN network
  99      *
 100      * @param msg the EnergyManagement message received
 101      * @throws FrameException
 102      */
 103     private void updateActivePower(BaseOpenMessage msg) {
 104         Integer activePower;
 105         try {
 106             activePower = Integer.parseInt(msg.getDimValues()[0]);
 107             updateState(CHANNEL_POWER, new QuantityType<Power>(activePower, Units.WATT));
 108         } catch (FrameException e) {
 109             logger.warn("FrameException on frame {}: {}", msg, e.getMessage());
 110             updateState(CHANNEL_POWER, UnDefType.UNDEF);
 111         }
 112     }
 113 }