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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.upb.internal.handler;
  14
  15 import org.eclipse.jdt.annotation.NonNullByDefault;
  16 import org.eclipse.jdt.annotation.Nullable;
  17 import org.openhab.binding.upb.internal.Constants;
  18 import org.openhab.binding.upb.internal.UPBController;
  19 import org.openhab.binding.upb.internal.UPBDevice;
  20 import org.openhab.binding.upb.internal.message.UPBMessage;
  21 import org.openhab.core.thing.Bridge;
  22 import org.openhab.core.thing.ChannelUID;
  23 import org.openhab.core.thing.Thing;
  24 import org.openhab.core.thing.ThingStatus;
  25 import org.openhab.core.thing.ThingStatusDetail;
  26 import org.openhab.core.thing.binding.BaseBridgeHandler;
  27 import org.openhab.core.thing.binding.ThingHandler;
  28 import org.openhab.core.types.Command;
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31
  32 /**
  33  * Base class for Powerline Interface Module handlers.
  34  *
  35  * @author Marcus Better - Initial contribution
  36  *
  37  */
  38 @NonNullByDefault
  39 public abstract class PIMHandler extends BaseBridgeHandler implements MessageListener, UPBIoHandler {
  40
  41     private final Logger logger = LoggerFactory.getLogger(PIMHandler.class);
  42
  43     // volatile to ensure visibility for callbacks from the serial I/O thread
  44     private volatile UPBController controller = new UPBController();
  45
  46     public PIMHandler(final Bridge bridge) {
  47         super(bridge);
  48     }
  49
  50     @Override
  51     public void initialize() {
  52         logger.debug("Initializing UPB PIM {}.", getThing().getUID());
  53         updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.BRIDGE_OFFLINE, Constants.OFFLINE_CTLR_OFFLINE);
  54         controller = new UPBController();
  55     }
  56
  57     @Override
  58     public void dispose() {
  59         logger.debug("UPB binding shutting down...");
  60         super.dispose();
  61     }
  62
  63     @Override
  64     public void handleCommand(final ChannelUID channelUID, final Command command) {
  65     }
  66
  67     @Override
  68     public void childHandlerInitialized(final ThingHandler childHandler, final Thing childThing) {
  69         logger.debug("child handler initialized: {}", childThing.getUID());
  70         controller.deviceAdded(childHandler, childThing);
  71         super.childHandlerInitialized(childHandler, childThing);
  72     }
  73
  74     @Override
  75     public void childHandlerDisposed(final ThingHandler childHandler, final Thing childThing) {
  76         logger.debug("child handler disposed: {}", childThing.getUID());
  77         controller.deviceRemoved(childHandler, childThing);
  78         super.childHandlerDisposed(childHandler, childThing);
  79     }
  80
  81     @Override
  82     public void incomingMessage(final UPBMessage msg) {
  83         updateStatus(ThingStatus.ONLINE);
  84         controller.incomingMessage(msg);
  85     }
  86
  87     @Override
  88     public void onError(final Throwable t) {
  89         // Currently all PIM errors are unrecoverable, either a bug or
  90         // the serial thread had an I/O error.
  91         updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.BRIDGE_OFFLINE, Constants.OFFLINE_COMM_ERROR);
  92     }
  93
  94     public @Nullable UPBDevice getDevice(byte networkId, byte unitId) {
  95         return controller.getDevice(networkId, unitId);
  96     }
  97 }