logging

Documentation

Overview

Package logging provides a simple logger interface

Index

• Constants
• Variables
• type Logger
  • func NewLogger(level string, out io.Writer, prefix string) (Logger, error)

Constants

const (
	// LEVEL_DEBUG = 0
	LEVEL_DEBUG = iota
	// LEVEL_INFO = 1
	LEVEL_INFO
	// LEVEL_WARNING = 2
	LEVEL_WARNING
	// LEVEL_ERROR = 3
	LEVEL_ERROR
	// LEVEL_CRITICAL = 4
	LEVEL_CRITICAL
)

Variables

var (
	// ErrInvalidLogLevel is used when an invalid log level has been used.
	ErrInvalidLogLevel = fmt.Errorf("invalid log level")

	// NoOp is the NO-OP logger
	NoOp, _ = NewLogger("CRITICAL", ioutil.Discard, "")
)

Types

type Logger

type Logger interface {
	Debug(v ...interface{})
	Info(v ...interface{})
	Warning(v ...interface{})
	Error(v ...interface{})
	Critical(v ...interface{})
	Fatal(v ...interface{})
}

Logger collects logging information at several levels

func NewLogger

func NewLogger(level string, out io.Writer, prefix string) (Logger, error)

NewLogger creates and returns a Logger object