logging

type LogSettings struct {
	LogFile    string  `yaml:"log_file"`
	MaxSize    int     `yaml:"max_size"`
	MaxBackups int     `yaml:"max_backups"`
	MaxAge     int     `yaml:"max_age"`
	LogLevel   *string `yaml:"log_level"`
	LogOutput  *string `yaml:"log_output,omitempty"` // "stdout" or "stderr"
}

type LoggerOption func(*logrus.Logger)

type SourceFormatter struct {
	// Underlying is the formatter (e.g., &logrus.TextFormatter{}) that we will delegate to.
	Underlying logrus.Formatter
	// AddSpace indicates whether to add an extra newline for readability, typically for text format.
	AddSpace bool
}