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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.automation.pidcontroller.internal.handler;
  14
  15 import static org.openhab.automation.pidcontroller.internal.PIDControllerConstants.*;
  16
  17 import java.math.BigDecimal;
  18 import java.util.Map;
  19 import java.util.stream.Stream;
  20
  21 import org.eclipse.jdt.annotation.NonNullByDefault;
  22 import org.eclipse.jdt.annotation.Nullable;
  23 import org.openhab.core.automation.Action;
  24 import org.openhab.core.automation.handler.ActionHandler;
  25 import org.openhab.core.automation.handler.BaseModuleHandler;
  26 import org.openhab.core.events.EventPublisher;
  27 import org.openhab.core.items.ItemRegistry;
  28 import org.openhab.core.items.events.ItemCommandEvent;
  29 import org.openhab.core.items.events.ItemEventFactory;
  30 import org.openhab.core.library.types.DecimalType;
  31 import org.slf4j.Logger;
  32 import org.slf4j.LoggerFactory;
  33
  34 /**
  35  *
  36  * @author Hilbrand Bouwkamp - Initial Contribution
  37  * @author Fabian Wolter - Add PID debugging items
  38  */
  39 @NonNullByDefault
  40 public class PIDControllerActionHandler extends BaseModuleHandler<Action> implements ActionHandler {
  41     public static final String MODULE_TYPE_ID = AUTOMATION_NAME + ".action";
  42
  43     private final Logger logger = LoggerFactory.getLogger(PIDControllerActionHandler.class);
  44
  45     private ItemRegistry itemRegistry;
  46     private EventPublisher eventPublisher;
  47
  48     public PIDControllerActionHandler(Action module, ItemRegistry itemRegistry, EventPublisher eventPublisher) {
  49         super(module);
  50         this.itemRegistry = itemRegistry;
  51         this.eventPublisher = eventPublisher;
  52     }
  53
  54     @Override
  55     public @Nullable Map<String, Object> execute(Map<String, Object> context) {
  56         Stream.of(OUTPUT, P_INSPECTOR, I_INSPECTOR, D_INSPECTOR, E_INSPECTOR).forEach(arg -> {
  57             final String itemName = (String) module.getConfiguration().get(arg);
  58
  59             if (itemName == null || itemName.isBlank()) {
  60                 return;
  61             }
  62
  63             final BigDecimal command = (BigDecimal) context.get("1." + arg);
  64
  65             if (command != null) {
  66                 final DecimalType outputValue = new DecimalType(command);
  67                 final ItemCommandEvent itemCommandEvent = ItemEventFactory.createCommandEvent(itemName, outputValue);
  68
  69                 eventPublisher.post(itemCommandEvent);
  70             } else {
  71                 logger.warn(
  72                         "Command was not posted because either the configuration was not correct or a service was missing: ItemName: {}, Command: {}, eventPublisher: {}, ItemRegistry: {}",
  73                         itemName, command, eventPublisher, itemRegistry);
  74             }
  75         });
  76         return null;
  77     }
  78 }