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   1 /**
   2  * Copyright (c) 2010-2020 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.opensprinkler.internal.handler;
  14
  15 import static org.openhab.binding.opensprinkler.internal.OpenSprinklerBindingConstants.DEFAULT_WAIT_BEFORE_INITIAL_REFRESH;
  16
  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.opensprinkler.internal.api.OpenSprinklerApi;
  23 import org.openhab.binding.opensprinkler.internal.api.exception.CommunicationApiException;
  24 import org.openhab.core.thing.Bridge;
  25 import org.openhab.core.thing.ChannelUID;
  26 import org.openhab.core.thing.ThingStatus;
  27 import org.openhab.core.thing.ThingStatusDetail;
  28 import org.openhab.core.thing.binding.BaseBridgeHandler;
  29 import org.openhab.core.types.Command;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 /**
  34  * @author Florian Schmidt - Refactoring
  35  */
  36 @NonNullByDefault
  37 public abstract class OpenSprinklerBaseBridgeHandler extends BaseBridgeHandler {
  38     private final Logger logger = LoggerFactory.getLogger(OpenSprinklerBaseBridgeHandler.class);
  39
  40     @Nullable
  41     private ScheduledFuture<?> pollingJob;
  42     @Nullable
  43     protected OpenSprinklerApi openSprinklerDevice;
  44
  45     public OpenSprinklerBaseBridgeHandler(Bridge bridge) {
  46         super(bridge);
  47     }
  48
  49     public OpenSprinklerApi getApi() {
  50         OpenSprinklerApi api = openSprinklerDevice;
  51         if (api == null) {
  52             throw new IllegalStateException();
  53         }
  54         return api;
  55     }
  56
  57     @Override
  58     public void initialize() {
  59         pollingJob = scheduler.scheduleWithFixedDelay(this::refreshStations, DEFAULT_WAIT_BEFORE_INITIAL_REFRESH,
  60                 getRefreshInterval(), TimeUnit.SECONDS);
  61     }
  62
  63     protected abstract long getRefreshInterval();
  64
  65     private void refreshStations() {
  66         if (openSprinklerDevice != null) {
  67             if (openSprinklerDevice.isManualModeEnabled()) {
  68                 updateStatus(ThingStatus.ONLINE);
  69
  70                 this.getThing().getThings().forEach(thing -> {
  71                     OpenSprinklerBaseHandler handler = (OpenSprinklerBaseHandler) thing.getHandler();
  72                     if (handler != null) {
  73                         handler.updateChannels();
  74                     }
  75                 });
  76             } else {
  77                 updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.OFFLINE.COMMUNICATION_ERROR,
  78                         "Could not sync status with the OpenSprinkler.");
  79             }
  80         }
  81     }
  82
  83     @Override
  84     public void dispose() {
  85         super.dispose();
  86         if (openSprinklerDevice != null) {
  87             try {
  88                 openSprinklerDevice.leaveManualMode();
  89             } catch (CommunicationApiException e) {
  90                 logger.error("Could not close connection on teardown.", e);
  91             }
  92             openSprinklerDevice = null;
  93         }
  94
  95         if (pollingJob != null) {
  96             pollingJob.cancel(true);
  97             pollingJob = null;
  98         }
  99     }
 100
 101     @Override
 102     public void handleCommand(ChannelUID channelUID, Command command) {
 103         // Nothing to do for the bridge handler
 104     }
 105 }