logfmt_formatter.h File Reference

Logfmt formatter for structured logging kcenon. More...

#include "../interfaces/log_entry.h"
#include "../interfaces/log_formatter_interface.h"
#include "../utils/time_utils.h"
#include "../utils/string_utils.h"
#include <sstream>
#include <iomanip>
#include <type_traits>
#include <variant>
#include <kcenon/common/interfaces/logger_interface.h>

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Classes
class	kcenon::logger::logfmt_formatter
	Formatter that outputs logfmt-structured log messages. More...

Namespaces
namespace	kcenon
namespace	kcenon::logger

Detailed Description

Logfmt formatter for structured logging kcenon.

Since

3.1.0

Formats log messages in logfmt format (key=value pairs) for integration with log aggregation systems that support this format (Prometheus, Grafana Loki, Heroku, etc.).

Output format: level=info ts=2025-01-11T10:30:15.123Z msg="Application started" thread_id=12345

With structured fields: level=error ts=2025-01-11T10:30:15.123Z msg="Connection failed" user_id=123 retry_count=3

See also

https://brandur.org/logfmt

Definition in file logfmt_formatter.h.