# Copyright (c) 2024 Arif Balik <arifbalik@outlook.com>
# SPDX-License-Identifier: Apache-2.0

config LOG_BACKEND_MQTT
	bool "MQTT backend"
	depends on MQTT_LIB && !LOG_MODE_IMMEDIATE
	help
	  Send log messages to an MQTT broker using an external MQTT client.
	  This backend publishes log messages to a configurable MQTT topic
	  using an MQTT client provided by the application via the
	  log_backend_mqtt_client_set() API. The application is responsible
	  for initializing, connecting, and managing the MQTT client lifecycle.

if LOG_BACKEND_MQTT

config LOG_BACKEND_MQTT_TOPIC_DEFAULT
	string "Default MQTT topic for log messages"
	default "zephyr/logs"
	help
	  Default MQTT topic for log messages. Use log backend MQTT API to change it at runtime.

config LOG_BACKEND_MQTT_QOS
	int "MQTT Quality of Service level"
	default 0
	range 0 2
	help
	  QoS level for published log messages:
	  0 - At most once delivery (fire and forget)
	  1 - At least once delivery (acknowledged delivery)
	  2 - Exactly once delivery (assured delivery)

config LOG_BACKEND_MQTT_RETAIN
	bool "Retain MQTT messages"
	help
	  When enabled, published log messages will be retained by the broker
	  and delivered to new subscribers immediately upon subscription.

config LOG_BACKEND_MQTT_MAX_MSG_SIZE
	int "Maximum log message size"
	default 256
	range 64 1024
	help
	  Maximum size of a single log message in bytes.

backend = MQTT
backend-str = mqtt
source "subsys/logging/Kconfig.template.log_format_config"

endif # LOG_BACKEND_MQTT