2 * Copyright (c) 2010-2023 Contributors to the openHAB project
4 * See the NOTICE file(s) distributed with this work for additional
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
11 * SPDX-License-Identifier: EPL-2.0
13 package org.openhab.binding.mqtt.homeassistant.internal.config.dto;
15 import java.util.List;
18 import org.eclipse.jdt.annotation.NonNullByDefault;
19 import org.eclipse.jdt.annotation.Nullable;
20 import org.openhab.binding.mqtt.homeassistant.internal.exception.ConfigurationException;
21 import org.openhab.core.thing.Thing;
22 import org.openhab.core.util.UIDUtils;
24 import com.google.gson.Gson;
25 import com.google.gson.JsonSyntaxException;
26 import com.google.gson.annotations.SerializedName;
29 * Base class for home assistant configurations.
31 * @author Jochen Klein - Initial contribution
34 public abstract class AbstractChannelConfiguration {
35 public static final char PARENT_TOPIC_PLACEHOLDER = '~';
37 protected String name;
39 protected String icon = "";
40 protected int qos; // defaults to 0 according to HA specification
41 protected boolean retain; // defaults to false according to HA specification
42 @SerializedName("value_template")
43 protected @Nullable String valueTemplate;
44 @SerializedName("unique_id")
45 protected @Nullable String uniqueId;
47 @SerializedName("availability_mode")
48 protected AvailabilityMode availabilityMode = AvailabilityMode.LATEST;
49 @SerializedName("availability_topic")
50 protected @Nullable String availabilityTopic;
51 @SerializedName("payload_available")
52 protected String payloadAvailable = "online";
53 @SerializedName("payload_not_available")
54 protected String payloadNotAvailable = "offline";
55 @SerializedName("availability_template")
56 protected @Nullable String availabilityTemplate;
59 * A list of MQTT topics subscribed to receive availability (online/offline) updates. Must not be used together with
62 protected @Nullable List<Availability> availability;
64 @SerializedName(value = "~")
65 protected String parentTopic = "";
67 protected @Nullable Device device;
70 * Parse the base properties of the configJSON into an {@link AbstractChannelConfiguration}
72 * @param configJSON channels configuration in JSON
74 * @return configuration object
76 public static AbstractChannelConfiguration fromString(final String configJSON, final Gson gson) {
77 return fromString(configJSON, gson, Config.class);
80 protected AbstractChannelConfiguration(String defaultName) {
81 this.name = defaultName;
84 public String getThingName() {
87 if (this.device != null) {
88 result = this.device.name;
96 public String getThingId(String defaultId) {
98 if (this.device != null) {
99 result = this.device.getId();
101 if (result == null) {
104 return UIDUtils.encode(result != null ? result : defaultId);
107 public Map<String, Object> appendToProperties(Map<String, Object> properties) {
108 final Device d = device;
112 final String manufacturer = d.manufacturer;
113 if (manufacturer != null) {
114 properties.put(Thing.PROPERTY_VENDOR, manufacturer);
116 final String model = d.model;
118 properties.put(Thing.PROPERTY_MODEL_ID, model);
120 final String swVersion = d.swVersion;
121 if (swVersion != null) {
122 properties.put(Thing.PROPERTY_FIRMWARE_VERSION, swVersion);
127 public String getName() {
131 public String getIcon() {
135 public int getQos() {
139 public boolean isRetain() {
144 public String getValueTemplate() {
145 return valueTemplate;
149 public String getUniqueId() {
154 public String getAvailabilityTopic() {
155 return availabilityTopic;
158 public String getPayloadAvailable() {
159 return payloadAvailable;
162 public String getPayloadNotAvailable() {
163 return payloadNotAvailable;
167 public String getAvailabilityTemplate() {
168 return availabilityTemplate;
172 public Device getDevice() {
177 public List<Availability> getAvailability() {
181 public String getParentTopic() {
185 public AvailabilityMode getAvailabilityMode() {
186 return availabilityMode;
190 * This class is needed, to be able to parse only the common base attributes.
191 * Without this, {@link AbstractChannelConfiguration} cannot be instantiated, as it is abstract.
192 * This is needed during the discovery.
194 private static class Config extends AbstractChannelConfiguration {
201 * Parse the configJSON into a subclass of {@link AbstractChannelConfiguration}
203 * @param configJSON channels configuration in JSON
205 * @param clazz target configuration class
206 * @return configuration object
208 public static <C extends AbstractChannelConfiguration> C fromString(final String configJSON, final Gson gson,
209 final Class<C> clazz) {
212 final C config = gson.fromJson(configJSON, clazz);
213 if (config == null) {
214 throw new ConfigurationException("Channel configuration is empty");
217 } catch (JsonSyntaxException e) {
218 throw new ConfigurationException("Cannot parse channel configuration JSON", e);