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[mqtt] Eliminate per-entity loop overhead and heap churn (#13356)

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This commit is contained in:
J. Nick Koston
2026-01-19 17:41:55 -10:00
committed by GitHub
parent aeea340bc6
commit 6cf320fd60
3 changed files with 13 additions and 10 deletions
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6
esphome/components/mqtt/mqtt_client.cpp
View File

@@ -403,6 +403,12 @@ void MQTTClientComponent::loop() {
this->last_connected_ = now;
this->resubscribe_subscriptions_();
// Process pending resends for all MQTT components centrally
// This is more efficient than each component polling in its own loop
for (MQTTComponent *component : this->children_) {
component->process_resend();
}
}
break;
}

12
esphome/components/mqtt/mqtt_component.cpp
View File

@@ -308,16 +308,12 @@ void MQTTComponent::call_setup() {
}
}
void MQTTComponent::call_loop() {
if (this->is_internal())
void MQTTComponent::process_resend() {
// Called by MQTTClientComponent when connected to process pending resends
// Note: is_internal() check not needed - internal components are never registered
if (!this->resend_state_)
return;
this->loop();
if (!this->resend_state_ || !this->is_connected_()) {
return;
}
this->resend_state_ = false;
if (this->is_discovery_enabled()) {
if (!this->send_discovery_()) {

5
esphome/components/mqtt/mqtt_component.h
View File

@@ -81,8 +81,6 @@ class MQTTComponent : public Component {
/// Override setup_ so that we can call send_discovery() when needed.
void call_setup() override;
void call_loop() override;
void call_dump_config() override;
/// Send discovery info the Home Assistant, override this.
@@ -133,6 +131,9 @@ class MQTTComponent : public Component {
/// Internal method for the MQTT client base to schedule a resend of the state on reconnect.
void schedule_resend_state();
/// Process pending resend if needed (called by MQTTClientComponent)
void process_resend();
/** Send a MQTT message.
*
* @param topic The topic.