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Adds unregister event API

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- Added to enable users to unregister event handler.

 Closes https://github.com/espressif/esp-idf/issues/9194
This commit is contained in:
Euripedes Rocha
2022-07-19 06:42:13 -03:00
committed by David Čermák
parent f14eeb9157
commit a9a9fe76bf
2 changed files with 30 additions and 0 deletions
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13
include/mqtt_client.h
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@ -547,6 +547,19 @@ esp_err_t esp_mqtt_client_register_event(esp_mqtt_client_handle_t client,
esp_event_handler_t event_handler,
void *event_handler_arg);
/**
* @brief Unregisters mqtt event
*
* @param client mqtt client handle
* @param event event ID
* @param event_handler handler to unregister
*
* @return ESP_ERR_NO_MEM if failed to allocate
* ESP_ERR_INVALID_ARG on invalid event ID
* ESP_OK on success
*/
esp_err_t esp_mqtt_client_unregister_event(esp_mqtt_client_handle_t client, esp_mqtt_event_id_t event, esp_event_handler_t event_handler);
/**
* @brief Get outbox size
*

17
mqtt_client.c
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@ -2056,6 +2056,23 @@ esp_err_t esp_mqtt_client_register_event(esp_mqtt_client_handle_t client, esp_mq
#endif
}
esp_err_t esp_mqtt_client_unregister_event(esp_mqtt_client_handle_t client, esp_mqtt_event_id_t event, esp_event_handler_t event_handler)
{
if (client == NULL) {
return ESP_ERR_INVALID_ARG;
}
#ifdef MQTT_SUPPORTED_FEATURE_EVENT_LOOP
if (client->config->event_handle) {
ESP_LOGW(TAG, "Unregistering event loop while event callback is not null, clearing callback");
client->config->event_handle = NULL;
}
return esp_event_handler_unregister_with(client->config->event_loop_handle, MQTT_EVENTS, event, event_handler);
#else
ESP_LOGE(TAG, "Unregistering event handler while event loop not available in IDF version %s", IDF_VER);
return ESP_FAIL;
#endif
}
static void esp_mqtt_client_dispatch_transport_error(esp_mqtt_client_handle_t client)
{