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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.omnikinverter.internal.handler;
  14
  15 import java.io.IOException;
  16 import java.net.ConnectException;
  17 import java.net.NoRouteToHostException;
  18 import java.net.UnknownHostException;
  19 import java.util.concurrent.ScheduledFuture;
  20 import java.util.concurrent.TimeUnit;
  21
  22 import javax.measure.quantity.Power;
  23
  24 import org.eclipse.jdt.annotation.NonNullByDefault;
  25 import org.eclipse.jdt.annotation.Nullable;
  26 import org.openhab.binding.omnikinverter.internal.OmnikInverter;
  27 import org.openhab.binding.omnikinverter.internal.OmnikInverterBindingConstants;
  28 import org.openhab.binding.omnikinverter.internal.OmnikInverterConfiguration;
  29 import org.openhab.binding.omnikinverter.internal.OmnikInverterMessage;
  30 import org.openhab.core.library.types.QuantityType;
  31 import org.openhab.core.library.unit.Units;
  32 import org.openhab.core.thing.ChannelUID;
  33 import org.openhab.core.thing.Thing;
  34 import org.openhab.core.thing.ThingStatus;
  35 import org.openhab.core.thing.ThingStatusDetail;
  36 import org.openhab.core.thing.binding.BaseThingHandler;
  37 import org.openhab.core.types.Command;
  38 import org.openhab.core.types.RefreshType;
  39 import org.slf4j.Logger;
  40 import org.slf4j.LoggerFactory;
  41
  42 /**
  43  * The {@link OmnikInverterHandler} is responsible for handling commands, which are
  44  * sent to one of the channels.
  45  *
  46  * @author Hans van den Bogert - Initial contribution
  47  */
  48 @NonNullByDefault
  49 public class OmnikInverterHandler extends BaseThingHandler {
  50     private final Logger logger = LoggerFactory.getLogger(OmnikInverterHandler.class);
  51
  52     private @Nullable OmnikInverter inverter;
  53     private @Nullable ScheduledFuture<?> pollJob;
  54
  55     public OmnikInverterHandler(Thing thing) {
  56         super(thing);
  57     }
  58
  59     @Override
  60     public void handleCommand(ChannelUID channelUID, Command command) {
  61         if (OmnikInverterBindingConstants.CHANNEL_POWER.equals(channelUID.getId())) {
  62             if (command instanceof RefreshType) {
  63                 updateData();
  64             }
  65         }
  66     }
  67
  68     @Override
  69     public void initialize() {
  70         OmnikInverterConfiguration config = getConfigAs(OmnikInverterConfiguration.class);
  71
  72         inverter = new OmnikInverter(config.hostname, config.port, config.serial);
  73         updateStatus(ThingStatus.UNKNOWN);
  74         pollJob = scheduler.scheduleWithFixedDelay(this::updateData, 0, 10, TimeUnit.SECONDS);
  75     }
  76
  77     @Override
  78     public void dispose() {
  79         ScheduledFuture<?> pollJob = this.pollJob;
  80         if (pollJob != null) {
  81             pollJob.cancel(true);
  82             this.pollJob = null;
  83         }
  84         super.dispose();
  85     }
  86
  87     private void updateData() {
  88         try {
  89             if (inverter != null) {
  90                 OmnikInverterMessage message = inverter.pullCurrentStats();
  91
  92                 updateStatus(ThingStatus.ONLINE);
  93
  94                 QuantityType<Power> powerQuantity = new QuantityType<>(message.getPower(), Units.WATT);
  95                 updateState(OmnikInverterBindingConstants.CHANNEL_POWER, powerQuantity);
  96
  97                 updateState(OmnikInverterBindingConstants.CHANNEL_ENERGY_TODAY,
  98                         new QuantityType<>(message.getEnergyToday(), Units.KILOWATT_HOUR));
  99
 100                 updateState(OmnikInverterBindingConstants.CHANNEL_ENERGY_TOTAL,
 101                         new QuantityType<>(message.getTotalEnergy(), Units.KILOWATT_HOUR));
 102             }
 103         } catch (UnknownHostException | NoRouteToHostException | ConnectException e) {
 104             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, e.getMessage());
 105         } catch (IOException e) {
 106             logger.debug("Unknown exception when pulling data from the inverter: {}", e.getMessage());
 107             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.NONE, "Unknown error: " + e.getMessage());
 108         }
 109     }
 110 }