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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.hydrawise.internal;
  14
  15 import static org.openhab.binding.hydrawise.internal.HydrawiseBindingConstants.*;
  16
  17 import java.time.ZonedDateTime;
  18 import java.time.temporal.ChronoUnit;
  19 import java.util.Collections;
  20 import java.util.HashMap;
  21 import java.util.Map;
  22 import java.util.Optional;
  23 import java.util.concurrent.ScheduledFuture;
  24 import java.util.concurrent.TimeUnit;
  25
  26 import org.apache.commons.lang.StringUtils;
  27 import org.eclipse.jdt.annotation.NonNullByDefault;
  28 import org.eclipse.jdt.annotation.Nullable;
  29 import org.openhab.binding.hydrawise.internal.api.HydrawiseAuthenticationException;
  30 import org.openhab.binding.hydrawise.internal.api.HydrawiseCommandException;
  31 import org.openhab.binding.hydrawise.internal.api.HydrawiseConnectionException;
  32 import org.openhab.binding.hydrawise.internal.api.model.LocalScheduleResponse;
  33 import org.openhab.binding.hydrawise.internal.api.model.Relay;
  34 import org.openhab.binding.hydrawise.internal.api.model.Running;
  35 import org.openhab.core.library.types.DateTimeType;
  36 import org.openhab.core.library.types.DecimalType;
  37 import org.openhab.core.library.types.OnOffType;
  38 import org.openhab.core.library.types.StringType;
  39 import org.openhab.core.thing.ChannelUID;
  40 import org.openhab.core.thing.Thing;
  41 import org.openhab.core.thing.ThingStatus;
  42 import org.openhab.core.thing.ThingStatusDetail;
  43 import org.openhab.core.thing.binding.BaseThingHandler;
  44 import org.openhab.core.types.Command;
  45 import org.openhab.core.types.RefreshType;
  46 import org.openhab.core.types.State;
  47 import org.openhab.core.types.UnDefType;
  48 import org.slf4j.Logger;
  49 import org.slf4j.LoggerFactory;
  50
  51 /**
  52  * The {@link HydrawiseHandler} is responsible for handling commands, which are
  53  * sent to one of the channels.
  54  *
  55  * @author Dan Cunningham - Initial contribution
  56  */
  57 @NonNullByDefault
  58 public abstract class HydrawiseHandler extends BaseThingHandler {
  59
  60     private final Logger logger = LoggerFactory.getLogger(HydrawiseHandler.class);
  61     private @Nullable ScheduledFuture<?> pollFuture;
  62     private Map<String, State> stateMap = Collections.synchronizedMap(new HashMap<>());
  63     private Map<String, Relay> relayMap = Collections.synchronizedMap(new HashMap<>());
  64
  65     /**
  66      * value observed being used by the Hydrawise clients as a max time value,
  67      */
  68     private static long MAX_RUN_TIME = 157680000;
  69
  70     /**
  71      * Minimum amount of time we can poll for updates
  72      */
  73     protected static final int MIN_REFRESH_SECONDS = 5;
  74
  75     /**
  76      * Minimum amount of time we can poll after a command
  77      */
  78     protected static final int COMMAND_REFRESH_SECONDS = 5;
  79
  80     /**
  81      * Our poll rate
  82      */
  83     protected int refresh;
  84
  85     /**
  86      * Future to poll for updated
  87      */
  88
  89     public HydrawiseHandler(Thing thing) {
  90         super(thing);
  91     }
  92
  93     @SuppressWarnings({ "null", "unused" }) // compiler does not like relayMap.get can return null
  94     @Override
  95     public void handleCommand(ChannelUID channelUID, Command command) {
  96         if (getThing().getStatus() != ThingStatus.ONLINE) {
  97             logger.warn("Controller is NOT ONLINE and is not responding to commands");
  98             return;
  99         }
 100
 101         // remove our cached state for this, will be safely updated on next poll
 102         stateMap.remove(channelUID.getAsString());
 103
 104         if (command instanceof RefreshType) {
 105             // we already removed this from the cache
 106             return;
 107         }
 108
 109         String group = channelUID.getGroupId();
 110         String channelId = channelUID.getIdWithoutGroup();
 111         boolean allCommand = CHANNEL_GROUP_ALLZONES.equals(group);
 112
 113         Relay relay = relayMap.get(group);
 114         if (!allCommand && relay == null) {
 115             logger.debug("Zone not found {}", group);
 116             return;
 117         }
 118
 119         try {
 120             clearPolling();
 121             switch (channelId) {
 122                 case CHANNEL_ZONE_RUN_CUSTOM:
 123                     if (!(command instanceof DecimalType)) {
 124                         logger.warn("Invalid command type for run custom {}", command.getClass().getName());
 125                         return;
 126                     }
 127                     if (allCommand) {
 128                         sendRunAllCommand(((DecimalType) command).intValue());
 129                     } else {
 130                         sendRunCommand(((DecimalType) command).intValue(), relay);
 131                     }
 132                     break;
 133                 case CHANNEL_ZONE_RUN:
 134                     if (!(command instanceof OnOffType)) {
 135                         logger.warn("Invalid command type for run {}", command.getClass().getName());
 136                         return;
 137                     }
 138                     if (allCommand) {
 139                         if (command == OnOffType.ON) {
 140                             sendRunAllCommand();
 141                         } else {
 142                             sendStopAllCommand();
 143                         }
 144                     } else {
 145                         if (command == OnOffType.ON) {
 146                             sendRunCommand(relay);
 147                         } else {
 148                             sendStopCommand(relay);
 149                         }
 150                     }
 151                     break;
 152             }
 153             initPolling(COMMAND_REFRESH_SECONDS);
 154         } catch (HydrawiseCommandException | HydrawiseConnectionException e) {
 155             logger.debug("Could not issue command", e);
 156             initPolling(COMMAND_REFRESH_SECONDS);
 157         } catch (HydrawiseAuthenticationException e) {
 158             logger.debug("Credentials not valid");
 159             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR, "Credentials not valid");
 160             configureInternal();
 161         }
 162     }
 163
 164     @Override
 165     public void initialize() {
 166         scheduler.schedule(this::configureInternal, 0, TimeUnit.SECONDS);
 167     }
 168
 169     @Override
 170     public void dispose() {
 171         logger.debug("Handler disposed.");
 172         clearPolling();
 173     }
 174
 175     @Override
 176     public void channelLinked(ChannelUID channelUID) {
 177         // clear our cached value so the new channel gets updated on the next poll
 178         stateMap.remove(channelUID.getId());
 179     }
 180
 181     protected abstract void configure()
 182             throws NotConfiguredException, HydrawiseConnectionException, HydrawiseAuthenticationException;
 183
 184     protected abstract void pollController() throws HydrawiseConnectionException, HydrawiseAuthenticationException;
 185
 186     protected abstract void sendRunCommand(int seconds, Relay relay)
 187             throws HydrawiseCommandException, HydrawiseConnectionException, HydrawiseAuthenticationException;
 188
 189     protected abstract void sendRunCommand(Relay relay)
 190             throws HydrawiseCommandException, HydrawiseConnectionException, HydrawiseAuthenticationException;
 191
 192     protected abstract void sendStopCommand(Relay relay)
 193             throws HydrawiseCommandException, HydrawiseConnectionException, HydrawiseAuthenticationException;
 194
 195     protected abstract void sendRunAllCommand()
 196             throws HydrawiseCommandException, HydrawiseConnectionException, HydrawiseAuthenticationException;
 197
 198     protected abstract void sendRunAllCommand(int seconds)
 199             throws HydrawiseCommandException, HydrawiseConnectionException, HydrawiseAuthenticationException;
 200
 201     protected abstract void sendStopAllCommand()
 202             throws HydrawiseCommandException, HydrawiseConnectionException, HydrawiseAuthenticationException;
 203
 204     protected void updateZones(LocalScheduleResponse status) {
 205         ZonedDateTime now = ZonedDateTime.now().truncatedTo(ChronoUnit.SECONDS);
 206         status.relays.forEach(r -> {
 207             String group = "zone" + r.getRelayNumber();
 208             relayMap.put(group, r);
 209             logger.trace("Updateing Zone {} {} ", group, r.name);
 210             updateGroupState(group, CHANNEL_ZONE_NAME, new StringType(r.name));
 211             updateGroupState(group, CHANNEL_ZONE_TYPE, new DecimalType(r.type));
 212             updateGroupState(group, CHANNEL_ZONE_TIME,
 213                     r.runTimeSeconds != null ? new DecimalType(r.runTimeSeconds) : UnDefType.UNDEF);
 214             if (StringUtils.isNotBlank(r.icon)) {
 215                 updateGroupState(group, CHANNEL_ZONE_ICON, new StringType(BASE_IMAGE_URL + r.icon));
 216             }
 217             if (r.time >= MAX_RUN_TIME) {
 218                 updateGroupState(group, CHANNEL_ZONE_NEXT_RUN_TIME_TIME, UnDefType.UNDEF);
 219             } else {
 220                 updateGroupState(group, CHANNEL_ZONE_NEXT_RUN_TIME_TIME,
 221                         new DateTimeType(now.plusSeconds(r.time).truncatedTo(ChronoUnit.MINUTES)));
 222             }
 223
 224             Optional<Running> running = status.running.stream()
 225                     .filter(z -> Integer.parseInt(z.relayId) == r.relayId.intValue()).findAny();
 226             if (running.isPresent()) {
 227                 updateGroupState(group, CHANNEL_ZONE_RUN, OnOffType.ON);
 228                 updateGroupState(group, CHANNEL_ZONE_TIME_LEFT, new DecimalType(running.get().timeLeft));
 229                 logger.debug("{} Time Left {}", r.name, running.get().timeLeft);
 230
 231             } else {
 232                 updateGroupState(group, CHANNEL_ZONE_RUN, OnOffType.OFF);
 233                 updateGroupState(group, CHANNEL_ZONE_TIME_LEFT, new DecimalType(0));
 234
 235             }
 236
 237             updateGroupState(CHANNEL_GROUP_ALLZONES, CHANNEL_ZONE_RUN,
 238                     !status.running.isEmpty() ? OnOffType.ON : OnOffType.OFF);
 239         });
 240     }
 241
 242     protected void updateGroupState(String group, String channelID, State state) {
 243         String channelName = group + "#" + channelID;
 244         State oldState = stateMap.put(channelName, state);
 245         if (!state.equals(oldState)) {
 246             ChannelUID channelUID = new ChannelUID(this.getThing().getUID(), channelName);
 247             logger.debug("updateState updating {} {}", channelUID, state);
 248             updateState(channelUID, state);
 249         }
 250     }
 251
 252     @SuppressWarnings("serial")
 253     @NonNullByDefault
 254     protected class NotConfiguredException extends Exception {
 255         NotConfiguredException(String message) {
 256             super(message);
 257         }
 258     }
 259
 260     private boolean isFutureValid(@Nullable ScheduledFuture<?> future) {
 261         return future != null && !future.isCancelled();
 262     }
 263
 264     private void configureInternal() {
 265         clearPolling();
 266         stateMap.clear();
 267         relayMap.clear();
 268         try {
 269             configure();
 270             initPolling(0);
 271         } catch (NotConfiguredException e) {
 272             logger.debug("Configuration error {}", e.getMessage());
 273             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR, e.getMessage());
 274         } catch (HydrawiseConnectionException e) {
 275             logger.debug("Could not connect to service");
 276             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, e.getMessage());
 277         } catch (HydrawiseAuthenticationException e) {
 278             logger.debug("Credentials not valid");
 279             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.CONFIGURATION_ERROR, "Credentials not valid");
 280         }
 281     }
 282
 283     /**
 284      * Starts/Restarts polling with an initial delay. This allows changes in the poll cycle for when commands are sent
 285      * and we need to poll sooner then the next refresh cycle.
 286      */
 287     private synchronized void initPolling(int initalDelay) {
 288         clearPolling();
 289         pollFuture = scheduler.scheduleWithFixedDelay(this::pollControllerInternal, initalDelay, refresh,
 290                 TimeUnit.SECONDS);
 291     }
 292
 293     /**
 294      * Stops/clears this thing's polling future
 295      */
 296     private void clearPolling() {
 297         ScheduledFuture<?> localFuture = pollFuture;
 298         if (isFutureValid(localFuture)) {
 299             if (localFuture != null) {
 300                 localFuture.cancel(false);
 301             }
 302         }
 303     }
 304
 305     /**
 306      * Poll the controller for updates.
 307      */
 308     private void pollControllerInternal() {
 309         try {
 310             pollController();
 311             if (getThing().getStatus() != ThingStatus.ONLINE) {
 312                 updateStatus(ThingStatus.ONLINE);
 313             }
 314         } catch (HydrawiseConnectionException e) {
 315             // poller will continue to run, set offline until next run
 316             logger.debug("Exception polling", e);
 317             updateStatus(ThingStatus.OFFLINE, ThingStatusDetail.COMMUNICATION_ERROR, e.getMessage());
 318         } catch (HydrawiseAuthenticationException e) {
 319             // if are creds are not valid, we need to try re authorizing again
 320             logger.debug("Authorization exception during polling", e);
 321             configureInternal();
 322         }
 323     }
 324 }