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;
58 @SerializedName("enabled_by_default")
59 protected boolean enabledByDefault = true;
62 * A list of MQTT topics subscribed to receive availability (online/offline) updates. Must not be used together with
65 protected @Nullable List<Availability> availability;
67 @SerializedName(value = "~")
68 protected String parentTopic = "";
70 protected @Nullable Device device;
73 * Parse the base properties of the configJSON into an {@link AbstractChannelConfiguration}
75 * @param configJSON channels configuration in JSON
77 * @return configuration object
79 public static AbstractChannelConfiguration fromString(final String configJSON, final Gson gson) {
80 return fromString(configJSON, gson, Config.class);
83 protected AbstractChannelConfiguration(String defaultName) {
84 this.name = defaultName;
87 public String getThingName() {
90 if (this.device != null) {
91 result = this.device.name;
99 public String getThingId(String defaultId) {
100 String result = null;
101 if (this.device != null) {
102 result = this.device.getId();
104 if (result == null) {
107 return UIDUtils.encode(result != null ? result : defaultId);
110 public Map<String, Object> appendToProperties(Map<String, Object> properties) {
111 final Device d = device;
115 final String manufacturer = d.manufacturer;
116 if (manufacturer != null) {
117 properties.put(Thing.PROPERTY_VENDOR, manufacturer);
119 final String model = d.model;
121 properties.put(Thing.PROPERTY_MODEL_ID, model);
123 final String swVersion = d.swVersion;
124 if (swVersion != null) {
125 properties.put(Thing.PROPERTY_FIRMWARE_VERSION, swVersion);
130 public String getName() {
134 public String getIcon() {
138 public int getQos() {
142 public boolean isRetain() {
147 public String getValueTemplate() {
148 return valueTemplate;
152 public String getUniqueId() {
157 public String getAvailabilityTopic() {
158 return availabilityTopic;
161 public String getPayloadAvailable() {
162 return payloadAvailable;
165 public String getPayloadNotAvailable() {
166 return payloadNotAvailable;
170 public String getAvailabilityTemplate() {
171 return availabilityTemplate;
174 public boolean isEnabledByDefault() {
175 return enabledByDefault;
179 public Device getDevice() {
184 public List<Availability> getAvailability() {
188 public String getParentTopic() {
192 public AvailabilityMode getAvailabilityMode() {
193 return availabilityMode;
197 * This class is needed, to be able to parse only the common base attributes.
198 * Without this, {@link AbstractChannelConfiguration} cannot be instantiated, as it is abstract.
199 * This is needed during the discovery.
201 private static class Config extends AbstractChannelConfiguration {
208 * Parse the configJSON into a subclass of {@link AbstractChannelConfiguration}
210 * @param configJSON channels configuration in JSON
212 * @param clazz target configuration class
213 * @return configuration object
215 public static <C extends AbstractChannelConfiguration> C fromString(final String configJSON, final Gson gson,
216 final Class<C> clazz) {
219 final C config = gson.fromJson(configJSON, clazz);
220 if (config == null) {
221 throw new ConfigurationException("Channel configuration is empty");
224 } catch (JsonSyntaxException e) {
225 throw new ConfigurationException("Cannot parse channel configuration JSON", e);