Added support for publishing ChannelDescriptionChangedEvents (#10900)

Signed-off-by: Christoph Weitkamp <github@christophweitkamp.de>

bundles/org.openhab.binding.deconz/src/main/java/org/openhab/binding/deconz/internal/DeconzDynamicCommandDescriptionProvider.java

@@ -0,0 +1,43 @@
+/**
+ * Copyright (c) 2010-2021 Contributors to the openHAB project
+ *
+ * See the NOTICE file(s) distributed with this work for additional
+ * information.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+package org.openhab.binding.deconz.internal;
+
+import org.eclipse.jdt.annotation.NonNullByDefault;
+import org.openhab.core.thing.ThingUID;
+import org.openhab.core.thing.binding.BaseDynamicCommandDescriptionProvider;
+import org.openhab.core.thing.type.DynamicCommandDescriptionProvider;
+import org.osgi.service.component.annotations.Component;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Dynamic channel command description provider.
+ * Overrides the command description for the controls, which receive its configuration in the runtime.
+ *
+ * @author Jan N. Klug - Initial contribution
+ */
+@NonNullByDefault
+@Component(service = { DynamicCommandDescriptionProvider.class, DeconzDynamicCommandDescriptionProvider.class })
+public class DeconzDynamicCommandDescriptionProvider extends BaseDynamicCommandDescriptionProvider {
+    private final Logger logger = LoggerFactory.getLogger(DeconzDynamicCommandDescriptionProvider.class);
+
+    /**
+     * remove all descriptions for a given thing
+     *
+     * @param thingUID the thing's UID
+     */
+    public void removeDescriptionsForThing(ThingUID thingUID) {
+        logger.trace("removing state description for thing {}", thingUID);
+        channelOptionsMap.entrySet().removeIf(entry -> entry.getKey().getThingUID().equals(thingUID));
+    }
+}

bundles/org.openhab.binding.deconz/src/main/java/org/openhab/binding/deconz/internal/StateDescriptionProvider.java → bundles/org.openhab.binding.deconz/src/main/java/org/openhab/binding/deconz/internal/DeconzDynamicStateDescriptionProvider.java

@@ -14,15 +14,19 @@
 
 import java.util.Locale;
 import java.util.Map;
+import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 
 import org.eclipse.jdt.annotation.NonNullByDefault;
 import org.eclipse.jdt.annotation.Nullable;
 import org.openhab.core.thing.Channel;
 import org.openhab.core.thing.ChannelUID;
 import org.openhab.core.thing.ThingUID;
+import org.openhab.core.thing.binding.BaseDynamicStateDescriptionProvider;
+import org.openhab.core.thing.events.ThingEventFactory;
 import org.openhab.core.thing.type.DynamicStateDescriptionProvider;
 import org.openhab.core.types.StateDescription;
+import org.openhab.core.types.StateDescriptionFragment;
 import org.osgi.service.component.annotations.Component;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -34,24 +38,30 @@
  * @author Jan N. Klug - Initial contribution
  */
 @NonNullByDefault
-@Component(service = { DynamicStateDescriptionProvider.class, StateDescriptionProvider.class })
-public class StateDescriptionProvider implements DynamicStateDescriptionProvider {
+@Component(service = { DynamicStateDescriptionProvider.class, DeconzDynamicStateDescriptionProvider.class })
+public class DeconzDynamicStateDescriptionProvider extends BaseDynamicStateDescriptionProvider {
+    private final Logger logger = LoggerFactory.getLogger(DeconzDynamicStateDescriptionProvider.class);
 
-    private final Map<ChannelUID, StateDescription> descriptions = new ConcurrentHashMap<>();
-    private final Logger logger = LoggerFactory.getLogger(StateDescriptionProvider.class);
+    private final Map<ChannelUID, StateDescriptionFragment> stateDescriptionFragments = new ConcurrentHashMap<>();
 
     /**
      * Set a state description for a channel. This description will be used when preparing the channel state by
      * the framework for presentation. A previous description, if existed, will be replaced.
      *
      * @param channelUID
      *            channel UID
-     * @param description
+     * @param stateDescriptionFragment
      *            state description for the channel
      */
-    public void setDescription(ChannelUID channelUID, StateDescription description) {
-        logger.trace("adding state description for channel {}", channelUID);
-        descriptions.put(channelUID, description);
+    public void setDescriptionFragment(ChannelUID channelUID, StateDescriptionFragment stateDescriptionFragment) {
+        StateDescriptionFragment oldStateDescriptionFragment = stateDescriptionFragments.get(channelUID);
+        if (!stateDescriptionFragment.equals(oldStateDescriptionFragment)) {
+            logger.trace("adding state description for channel {}", channelUID);
+            stateDescriptionFragments.put(channelUID, stateDescriptionFragment);
+            postEvent(ThingEventFactory.createChannelDescriptionChangedEvent(channelUID,
+                    itemChannelLinkRegistry != null ? itemChannelLinkRegistry.getLinkedItemNames(channelUID) : Set.of(),
+                    stateDescriptionFragment, oldStateDescriptionFragment));
+        }
     }
 
     /**
@@ -61,17 +71,18 @@ public void setDescription(ChannelUID channelUID, StateDescription description)
      */
     public void removeDescriptionsForThing(ThingUID thingUID) {
         logger.trace("removing state description for thing {}", thingUID);
-        descriptions.entrySet().removeIf(entry -> entry.getKey().getThingUID().equals(thingUID));
+        stateDescriptionFragments.entrySet().removeIf(entry -> entry.getKey().getThingUID().equals(thingUID));
     }
 
     @Override
     public @Nullable StateDescription getStateDescription(Channel channel,
             @Nullable StateDescription originalStateDescription, @Nullable Locale locale) {
-        if (descriptions.containsKey(channel.getUID())) {
+        StateDescriptionFragment stateDescriptionFragment = stateDescriptionFragments.get(channel.getUID());
+        if (stateDescriptionFragment != null) {
             logger.trace("returning new stateDescription for {}", channel.getUID());
-            return descriptions.get(channel.getUID());
+            return stateDescriptionFragment.toStateDescription();
         } else {
-            return null;
+            return super.getStateDescription(channel, originalStateDescription, locale);
         }
     }
 }

bundles/org.openhab.binding.deconz/src/main/java/org/openhab/binding/deconz/internal/DeconzHandlerFactory.java

@@ -65,14 +65,14 @@ public class DeconzHandlerFactory extends BaseThingHandlerFactory {
     private final Gson gson;
     private final WebSocketFactory webSocketFactory;
     private final HttpClientFactory httpClientFactory;
-    private final StateDescriptionProvider stateDescriptionProvider;
-    private final CommandDescriptionProvider commandDescriptionProvider;
+    private final DeconzDynamicStateDescriptionProvider stateDescriptionProvider;
+    private final DeconzDynamicCommandDescriptionProvider commandDescriptionProvider;
 
     @Activate
     public DeconzHandlerFactory(final @Reference WebSocketFactory webSocketFactory,
             final @Reference HttpClientFactory httpClientFactory,
-            final @Reference StateDescriptionProvider stateDescriptionProvider,
-            final @Reference CommandDescriptionProvider commandDescriptionProvider) {
+            final @Reference DeconzDynamicStateDescriptionProvider stateDescriptionProvider,
+            final @Reference DeconzDynamicCommandDescriptionProvider commandDescriptionProvider) {
         this.webSocketFactory = webSocketFactory;
         this.httpClientFactory = httpClientFactory;
         this.stateDescriptionProvider = stateDescriptionProvider;

bundles/org.openhab.binding.deconz/src/main/java/org/openhab/binding/deconz/internal/dto/Scene.java

@@ -13,6 +13,7 @@
 package org.openhab.binding.deconz.internal.dto;
 
 import org.eclipse.jdt.annotation.NonNullByDefault;
+import org.openhab.core.types.CommandOption;
 
 /**
  * The {@link Scene} is send by the websocket connection as well as the Rest API.
@@ -24,4 +25,13 @@
 public class Scene {
     public String id = "";
     public String name = "";
+
+    public CommandOption toCommandOption() {
+        return new CommandOption(name, name);
+    }
+
+    @Override
+    public String toString() {
+        return "Scene{" + "id='" + id + '\'' + ", name='" + name + '\'' + '}';
+    }
 }

bundles/org.openhab.binding.deconz/src/main/java/org/openhab/binding/deconz/internal/handler/GroupThingHandler.java

@@ -19,12 +19,13 @@
 import java.util.stream.Collectors;
 
 import org.eclipse.jdt.annotation.NonNullByDefault;
-import org.openhab.binding.deconz.internal.CommandDescriptionProvider;
+import org.openhab.binding.deconz.internal.DeconzDynamicCommandDescriptionProvider;
 import org.openhab.binding.deconz.internal.Util;
 import org.openhab.binding.deconz.internal.dto.DeconzBaseMessage;
 import org.openhab.binding.deconz.internal.dto.GroupAction;
 import org.openhab.binding.deconz.internal.dto.GroupMessage;
 import org.openhab.binding.deconz.internal.dto.GroupState;
+import org.openhab.binding.deconz.internal.dto.Scene;
 import org.openhab.binding.deconz.internal.types.ResourceType;
 import org.openhab.core.library.types.DecimalType;
 import org.openhab.core.library.types.HSBType;
@@ -36,8 +37,6 @@
 import org.openhab.core.thing.ThingStatus;
 import org.openhab.core.thing.ThingTypeUID;
 import org.openhab.core.types.Command;
-import org.openhab.core.types.CommandDescriptionBuilder;
-import org.openhab.core.types.CommandOption;
 import org.openhab.core.types.RefreshType;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -56,12 +55,13 @@
 public class GroupThingHandler extends DeconzBaseThingHandler {
     public static final Set<ThingTypeUID> SUPPORTED_THING_TYPE_UIDS = Set.of(THING_TYPE_LIGHTGROUP);
     private final Logger logger = LoggerFactory.getLogger(GroupThingHandler.class);
-    private final CommandDescriptionProvider commandDescriptionProvider;
+    private final DeconzDynamicCommandDescriptionProvider commandDescriptionProvider;
 
     private Map<String, String> scenes = Map.of();
     private GroupState groupStateCache = new GroupState();
 
-    public GroupThingHandler(Thing thing, Gson gson, CommandDescriptionProvider commandDescriptionProvider) {
+    public GroupThingHandler(Thing thing, Gson gson,
+            DeconzDynamicCommandDescriptionProvider commandDescriptionProvider) {
         super(thing, gson, ResourceType.GROUPS);
         this.commandDescriptionProvider = commandDescriptionProvider;
     }
@@ -142,10 +142,8 @@ protected void processStateResponse(DeconzBaseMessage stateResponse) {
             GroupMessage groupMessage = (GroupMessage) stateResponse;
             scenes = groupMessage.scenes.stream().collect(Collectors.toMap(scene -> scene.name, scene -> scene.id));
             ChannelUID channelUID = new ChannelUID(thing.getUID(), CHANNEL_SCENE);
-            commandDescriptionProvider.setDescription(channelUID,
-                    CommandDescriptionBuilder.create().withCommandOptions(groupMessage.scenes.stream()
-                            .map(scene -> new CommandOption(scene.name, scene.name)).collect(Collectors.toList()))
-                            .build());
+            commandDescriptionProvider.setCommandOptions(channelUID,
+                    groupMessage.scenes.stream().map(Scene::toCommandOption).collect(Collectors.toList()));
 
         }
         messageReceived(config.id, stateResponse);

bundles/org.openhab.binding.deconz/src/main/java/org/openhab/binding/deconz/internal/handler/LightThingHandler.java

@@ -24,8 +24,8 @@
 
 import org.eclipse.jdt.annotation.NonNullByDefault;
 import org.eclipse.jdt.annotation.Nullable;
-import org.openhab.binding.deconz.internal.CommandDescriptionProvider;
-import org.openhab.binding.deconz.internal.StateDescriptionProvider;
+import org.openhab.binding.deconz.internal.DeconzDynamicCommandDescriptionProvider;
+import org.openhab.binding.deconz.internal.DeconzDynamicStateDescriptionProvider;
 import org.openhab.binding.deconz.internal.Util;
 import org.openhab.binding.deconz.internal.dto.DeconzBaseMessage;
 import org.openhab.binding.deconz.internal.dto.LightMessage;
@@ -49,10 +49,9 @@
 import org.openhab.core.thing.binding.builder.ChannelBuilder;
 import org.openhab.core.thing.binding.builder.ThingBuilder;
 import org.openhab.core.types.Command;
-import org.openhab.core.types.CommandDescriptionBuilder;
 import org.openhab.core.types.CommandOption;
 import org.openhab.core.types.RefreshType;
-import org.openhab.core.types.StateDescription;
+import org.openhab.core.types.StateDescriptionFragment;
 import org.openhab.core.types.StateDescriptionFragmentBuilder;
 import org.openhab.core.types.UnDefType;
 import org.slf4j.Logger;
@@ -85,8 +84,8 @@ public class LightThingHandler extends DeconzBaseThingHandler {
 
     private final Logger logger = LoggerFactory.getLogger(LightThingHandler.class);
 
-    private final StateDescriptionProvider stateDescriptionProvider;
-    private final CommandDescriptionProvider commandDescriptionProvider;
+    private final DeconzDynamicStateDescriptionProvider stateDescriptionProvider;
+    private final DeconzDynamicCommandDescriptionProvider commandDescriptionProvider;
 
     private long lastCommandExpireTimestamp = 0;
     private boolean needsPropertyUpdate = false;
@@ -104,8 +103,8 @@ public class LightThingHandler extends DeconzBaseThingHandler {
     private int ctMax = ZCL_CT_MAX;
     private int ctMin = ZCL_CT_MIN;
 
-    public LightThingHandler(Thing thing, Gson gson, StateDescriptionProvider stateDescriptionProvider,
-            CommandDescriptionProvider commandDescriptionProvider) {
+    public LightThingHandler(Thing thing, Gson gson, DeconzDynamicStateDescriptionProvider stateDescriptionProvider,
+            DeconzDynamicCommandDescriptionProvider commandDescriptionProvider) {
         super(thing, gson, ResourceType.LIGHTS);
         this.stateDescriptionProvider = stateDescriptionProvider;
         this.commandDescriptionProvider = commandDescriptionProvider;
@@ -123,15 +122,11 @@ public void initialize() {
                 ctMin = ctMinString == null ? ZCL_CT_MIN : Integer.parseInt(ctMinString);
 
                 // minimum and maximum are inverted due to mired/kelvin conversion!
-                StateDescription stateDescription = StateDescriptionFragmentBuilder.create()
+                StateDescriptionFragment stateDescriptionFragment = StateDescriptionFragmentBuilder.create()
                         .withMinimum(new BigDecimal(miredToKelvin(ctMax)))
-                        .withMaximum(new BigDecimal(miredToKelvin(ctMin))).build().toStateDescription();
-                if (stateDescription != null) {
-                    stateDescriptionProvider.setDescription(new ChannelUID(thing.getUID(), CHANNEL_COLOR_TEMPERATURE),
-                            stateDescription);
-                } else {
-                    logger.warn("Failed to create state description in thing {}", thing.getUID());
-                }
+                        .withMaximum(new BigDecimal(miredToKelvin(ctMin))).build();
+                stateDescriptionProvider.setDescriptionFragment(
+                        new ChannelUID(thing.getUID(), CHANNEL_COLOR_TEMPERATURE), stateDescriptionFragment);
             } catch (NumberFormatException e) {
                 needsPropertyUpdate = true;
             }
@@ -370,20 +365,16 @@ private void checkAndUpdateEffectChannels(LightMessage lightMessage) {
                 List<String> options = List.of("none", "steady", "snow", "rainbow", "snake", "tinkle", "fireworks",
                         "flag", "waves", "updown", "vintage", "fading", "collide", "strobe", "sparkles", "carnival",
                         "glow");
-                commandDescriptionProvider.setDescription(effectChannelUID,
-                        CommandDescriptionBuilder.create().withCommandOptions(toCommandOptionList(options)).build());
+                commandDescriptionProvider.setCommandOptions(effectChannelUID, toCommandOptionList(options));
                 break;
             case TINT_MUELLER:
                 options = List.of("none", "colorloop", "sunset", "party", "worklight", "campfire", "romance",
                         "nightlight");
-                commandDescriptionProvider.setDescription(effectChannelUID,
-                        CommandDescriptionBuilder.create().withCommandOptions(toCommandOptionList(options)).build());
+                commandDescriptionProvider.setCommandOptions(effectChannelUID, toCommandOptionList(options));
                 break;
             default:
                 options = List.of("none", "colorloop");
-                commandDescriptionProvider.setDescription(effectChannelUID,
-                        CommandDescriptionBuilder.create().withCommandOptions(toCommandOptionList(options)).build());
-
+                commandDescriptionProvider.setCommandOptions(effectChannelUID, toCommandOptionList(options));
         }
     }