ESPHome 2026.1.4
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mqtt_event.cpp
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1#include "mqtt_event.h"
2#include "esphome/core/log.h"
3
4#include "mqtt_const.h"
5
6#ifdef USE_MQTT
7#ifdef USE_EVENT
8
9namespace esphome::mqtt {
10
11static const char *const TAG = "mqtt.event";
12
13using namespace esphome::event;
14
16
18 // NOLINTNEXTLINE(clang-analyzer-cplusplus.NewDeleteLeaks) false positive with ArduinoJson
19 JsonArray event_types = root[MQTT_EVENT_TYPES].to<JsonArray>();
20 for (const auto &event_type : this->event_->get_event_types())
21 event_types.add(event_type);
22
23 // NOLINTBEGIN(clang-analyzer-cplusplus.NewDeleteLeaks) false positive with ArduinoJson
24 const auto device_class = this->event_->get_device_class_ref();
25 if (!device_class.empty()) {
26 root[MQTT_DEVICE_CLASS] = device_class;
27 }
28 // NOLINTEND(clang-analyzer-cplusplus.NewDeleteLeaks)
29
30 config.command_topic = false;
31}
32
34 this->event_->add_on_event_callback([this](const std::string &event_type) { this->publish_event_(event_type); });
35}
36
38 ESP_LOGCONFIG(TAG, "MQTT Event '%s': ", this->event_->get_name().c_str());
39 ESP_LOGCONFIG(TAG, "Event Types: ");
40 for (const char *event_type : this->event_->get_event_types()) {
41 ESP_LOGCONFIG(TAG, "- %s", event_type);
42 }
43 LOG_MQTT_COMPONENT(true, true);
44}
45
46bool MQTTEventComponent::publish_event_(const std::string &event_type) {
47 return this->publish_json(this->get_state_topic_(), [event_type](JsonObject root) {
48 // NOLINTNEXTLINE(clang-analyzer-cplusplus.NewDeleteLeaks) false positive with ArduinoJson
49 root[MQTT_EVENT_TYPE] = event_type;
50 });
51}
52
54const EntityBase *MQTTEventComponent::get_entity() const { return this->event_; }
55
56} // namespace esphome::mqtt
57
58#endif
59#endif // USE_MQTT
StringRef get_device_class_ref() const
Get the device class as StringRef.
const StringRef & get_name() const
constexpr const char * c_str() const
Definition string_ref.h:73
const FixedVector< const char * > & get_event_types() const
Return the event types supported by this event.
Definition event.h:47
void add_on_event_callback(std::function< void(const std::string &event_type)> &&callback)
Definition event.cpp:48
bool publish_json(const std::string &topic, const json::json_build_t &f)
Construct and send a JSON MQTT message.
std::string get_state_topic_() const
Get the MQTT topic that new states will be shared to.
bool publish_event_(const std::string &event_type)
void send_discovery(JsonObject root, mqtt::SendDiscoveryConfig &config) override
MQTTEventComponent(event::Event *event)
MQTT_COMPONENT_TYPE(MQTTAlarmControlPanelComponent, "alarm_control_panel") const EntityBase *MQTTAlarmControlPanelComponent
Simple Helper struct used for Home Assistant MQTT send_discovery().
bool command_topic
If the command topic should be included. Default to true.