Files
esphome/esphome/components/mqtt/mqtt_number.cpp
J. Nick Koston bf92d94863 [mqtt] Use stack buffers for publish_state() topic building (#13434)
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: pre-commit-ci-lite[bot] <117423508+pre-commit-ci-lite[bot]@users.noreply.github.com>
2026-01-26 17:25:02 -10:00

87 lines
2.7 KiB
C++

#include "mqtt_number.h"
#include "esphome/core/log.h"
#include "mqtt_const.h"
#ifdef USE_MQTT
#ifdef USE_NUMBER
namespace esphome::mqtt {
static const char *const TAG = "mqtt.number";
using namespace esphome::number;
MQTTNumberComponent::MQTTNumberComponent(Number *number) : number_(number) {}
void MQTTNumberComponent::setup() {
this->subscribe(this->get_command_topic_(), [this](const std::string &topic, const std::string &state) {
auto val = parse_number<float>(state);
if (!val.has_value()) {
ESP_LOGW(TAG, "Can't convert '%s' to number!", state.c_str());
return;
}
auto call = this->number_->make_call();
call.set_value(*val);
call.perform();
});
this->number_->add_on_state_callback([this](float state) { this->publish_state(state); });
}
void MQTTNumberComponent::dump_config() {
ESP_LOGCONFIG(TAG, "MQTT Number '%s':", this->number_->get_name().c_str());
LOG_MQTT_COMPONENT(true, false);
}
MQTT_COMPONENT_TYPE(MQTTNumberComponent, "number")
const EntityBase *MQTTNumberComponent::get_entity() const { return this->number_; }
void MQTTNumberComponent::send_discovery(JsonObject root, mqtt::SendDiscoveryConfig &config) {
const auto &traits = number_->traits;
// https://www.home-assistant.io/integrations/number.mqtt/
// NOLINTNEXTLINE(clang-analyzer-cplusplus.NewDeleteLeaks) false positive with ArduinoJson
root[MQTT_MIN] = traits.get_min_value();
root[MQTT_MAX] = traits.get_max_value();
root[MQTT_STEP] = traits.get_step();
// NOLINTBEGIN(clang-analyzer-cplusplus.NewDeleteLeaks) false positive with ArduinoJson
const auto unit_of_measurement = this->number_->traits.get_unit_of_measurement_ref();
if (!unit_of_measurement.empty()) {
root[MQTT_UNIT_OF_MEASUREMENT] = unit_of_measurement;
}
switch (this->number_->traits.get_mode()) {
case NUMBER_MODE_AUTO:
break;
case NUMBER_MODE_BOX:
root[MQTT_MODE] = "box";
break;
case NUMBER_MODE_SLIDER:
root[MQTT_MODE] = "slider";
break;
}
const auto device_class = this->number_->traits.get_device_class_ref();
if (!device_class.empty()) {
root[MQTT_DEVICE_CLASS] = device_class;
}
// NOLINTEND(clang-analyzer-cplusplus.NewDeleteLeaks)
config.command_topic = true;
}
bool MQTTNumberComponent::send_initial_state() {
if (this->number_->has_state()) {
return this->publish_state(this->number_->state);
} else {
return true;
}
}
bool MQTTNumberComponent::publish_state(float value) {
char topic_buf[MQTT_DEFAULT_TOPIC_MAX_LEN];
char buffer[64];
size_t len = buf_append_printf(buffer, sizeof(buffer), 0, "%f", value);
return this->publish(this->get_state_topic_to_(topic_buf), buffer, len);
}
} // namespace esphome::mqtt
#endif
#endif // USE_MQTT