logging

type Level int

type Logger interface {
	// ErrorErr simply logs an error (inclduing stack if created vis pkg/errors)
	ErrorErr(error)
	// Errorf logs a formated error message
	Errorf(format string, args ...interface{})
	// Error logs an error message
	Error(args ...interface{})
	// Warnf logs a formatted warning message
	Warnf(format string, args ...interface{})
	// Warn logs a warning message
	Warn(args ...interface{})
	// Infof logs a formatted info message
	Infof(format string, args ...interface{})
	// Info logs an info message
	Info(args ...interface{})
	// Debugf logs a formatted debug message
	Debugf(format string, args ...interface{})
	// Debug logs a debug message
	Debug(args ...interface{})

	// Create a child logger with fields (this field will be added to the fields
	// of the current logger)
	WithContext(fields map[string]interface{}) Logger
	// Create a child logger with an additional field
	WithField(name, value string) Logger
}

type Options struct {
	Backend   string
	LogFile   string
	LogFormat string
	Level     Level
	Output    io.Writer
}

type SimpleStackTracer interface {
	ErrorStack() string
}