template_formatter.h File Reference

Template-based customizable 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 <vector>
#include <type_traits>
#include <variant>
#include <kcenon/common/interfaces/logger_interface.h>

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Classes
class	kcenon::logger::template_formatter
	Customizable formatter using template strings with placeholders. More...
struct	kcenon::logger::template_formatter::template_segment
	Segment of parsed template. More...

Namespaces
namespace	kcenon
namespace	kcenon::logger

Detailed Description

Template-based customizable formatter for structured logging kcenon.

Since

3.1.0

Formats log messages using user-defined templates with placeholders. Placeholders are replaced with actual log entry values at runtime.

Supported placeholders:

• {timestamp} - ISO 8601 formatted timestamp
• {timestamp_local} - Local time formatted timestamp
• {level} - Log level (e.g., "INFO", "ERROR")
• {level_lower} - Lowercase log level (e.g., "info", "error")
• {message} - Log message content
• {thread_id} - Thread identifier
• {file} - Source file path
• {filename} - Source file name only (without path)
• {line} - Source line number
• {function} - Function name
• {category} - Log category
• {trace_id} - OpenTelemetry trace ID
• {span_id} - OpenTelemetry span ID

Definition in file template_formatter.h.