wlog

package

v0.12.0 Latest Latest Go to latest Published: Apr 4, 2016 License: MIT Imports: 5 Imported by: 0

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Repository

github.com/tpjg/kapacitor

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Documentation ¶

Overview ¶

Provides an io.Writer that filters log messages based on a log level.

Valid log levels are: DEBUG, INFO, WARN, ERROR.

Log messages need to begin with a L! where L is one of D, I, W, or E.

Examples:

log.Println("D! this is a debug log")
log.Println("I! this is an info log")
log.Println("W! this is a warn log")
log.Println("E! this is an error log")

Simply pass a instance of wlog.Writer to log.New or use the helper wlog.New function.

The log level can be changed via the SetLevel or the SetLevelFromName functions.

Index ¶

Constants
Variables
func New(w io.Writer, prefix string, flag int) *log.Logger
func SetLevel(l Level)
func SetLevelFromName(level string) error
type Level
- func LogLevel() Level
type StaticLevelWriter
- func NewStaticLevelWriter(w io.Writer, level Level) *StaticLevelWriter
- func (w *StaticLevelWriter) Write(buf []byte) (int, error)
type Writer
- func NewWriter(w io.Writer) *Writer
- func (w *Writer) Write(buf []byte) (int, error)

Constants ¶

View Source

const Delimeter = '!'

Variables ¶

View Source

var Levels = map[byte]Level{
	'D': DEBUG,
	'I': INFO,
	'W': WARN,
	'E': ERROR,
}

View Source

var ReverseLevels map[Level]byte

View Source

var StringToLevel = map[string]Level{
	"DEBUG": DEBUG,
	"INFO":  INFO,
	"WARN":  WARN,
	"ERROR": ERROR,
	"OFF":   OFF,
}

name to Level mappings

Functions ¶

func New ¶

func New(w io.Writer, prefix string, flag int) *log.Logger

func SetLevel ¶

func SetLevel(l Level)

func SetLevelFromName ¶

func SetLevelFromName(level string) error

Set the log level via a string name. To set it directly use 'logLevel'.

Types ¶

type Level ¶

type Level int

const (
	DEBUG Level
	INFO
	WARN
	ERROR
	OFF
)

func LogLevel ¶

func LogLevel() Level

type StaticLevelWriter ¶

type StaticLevelWriter struct {
	// contains filtered or unexported fields
}

func NewStaticLevelWriter ¶

func NewStaticLevelWriter(w io.Writer, level Level) *StaticLevelWriter

func (*StaticLevelWriter) Write ¶

func (w *StaticLevelWriter) Write(buf []byte) (int, error)

type Writer ¶

type Writer struct {
	// contains filtered or unexported fields
}

Implements io.Writer. Checks first byte of write for log level and drops the log if necessary

func NewWriter ¶

func NewWriter(w io.Writer) *Writer

func (*Writer) Write ¶

func (w *Writer) Write(buf []byte) (int, error)

Source Files ¶

View all Source files

writer.go

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