logger

type Config struct {
	Debug           bool   `default:"false" envconfig:"DEBUG"`
	Development     bool   `default:"false" envconfig:"DEVELOPMENT"`
	Deployment      string `default:"unknown" envconfig:"DEPLOYMENT"`
	StackTraceLevel string `default:"error" envconfig:"LOG_STACK_TRACE_LEVEL"`

	ExtraFields map[string]interface{}
}

type Logger interface {
	Init(*Config) (Logger, error)
	NoCaller() Logger

	Debug(msg string, args ...interface{})
	Info(msg string, args ...interface{})
	Warn(msg string, args ...interface{})
	Error(msg string, args ...interface{})
}