logger

package
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Published: Jan 2, 2016 License: MIT Imports: 3 Imported by: 0

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Types

type LogLevel

type LogLevel int

LogLevel represents the levels at which logs are written and rendered.

const (
	DEBUG LogLevel = iota
	INFO
	ERROR
	FATAL
)

DEBUG < INFO < ERROR < FATAL

func LogLevelFromString

func LogLevelFromString(logLevel string) LogLevel

LogLevelFromString returns a LogLevel for the provided logLevel string. It will panic if an unknown logLevel is provided.

type Logger

type Logger interface {
	Info(string, ...interface{})
	Debug(string, ...interface{})
	Error(string, error, ...interface{})
}

Logger supports writing messages and arbitrary data at different log levels.

func NewLogger

func NewLogger(minLogLevel LogLevel) Logger

NewLogger returns a logger writing to stdout whose level is controlled by the provided minLogLevel

func NewTestLogger

func NewTestLogger(writer io.Writer) Logger

NewTestLogger returns a logger writing to the provided writer. Its level is fixed at DEBUG It is primarily used in testing to write to e.g. the GinkgoWriter

type Sink

type Sink interface {
	//Log to the sink.  Best effort -- no need to worry about errors.
	Log(level LogLevel, payload []byte)
}

A Sink represents a write destination for a Logger. Based off https://github.com/pivotal-golang/lager

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