logging

type Level ¶ added in v0.7.0

type Level int

const (
	DebugLevel Level = iota
	InfoLevel
	WarnLevel
	ErrorLevel
)

type Logger ¶

type Logger interface {
	Debug(msg string)
	Debugf(fmt string, v ...interface{})

	Info(msg string)
	Infof(fmt string, v ...interface{})

	Warn(msg string)
	Warnf(fmt string, v ...interface{})

	Error(msg string)
	Errorf(fmt string, v ...interface{})

	Writer() io.Writer

	IsVerbose() bool
}

Logger defines behavior required by a logging package used by pack libraries

func New(w io.Writer) Logger

type PrefixWriter ¶

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

PrefixWriter will prefix writes

func NewPrefixWriter(w io.Writer, prefix string) *PrefixWriter

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

type WithSelectableWriter ¶ added in v0.7.0

type WithSelectableWriter interface {
	WriterForLevel(level Level) io.Writer
}

WithSelectableWriter is an optional interface for loggers that want to support a separate writer per log level.