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github.com/anacrolix/log

Package log

v0.7.0
Latest Go to latest

The latest major version is .

Published: Apr 21, 2020 | License: MPL-2.0 | Module: github.com/anacrolix/log

Index

Variables

var (
	Default = Logger{StreamLogger{
		W:   os.Stderr,
		Fmt: LineFormatter,
	}}
	Discard = Logger{StreamLogger{
		W:   ioutil.Discard,
		Fmt: func(Msg) []byte { return nil },
	}}
)
var (
	Debug    = Level{1, "DEBUG"}
	Info     = Level{2, "INFO"}
	Warning  = Level{3, "WARN"}
	Error    = Level{4, "ERROR"}
	Critical = Level{5, "CRIT"}
	// Will this get special treatment? Not yet.
	Fatal = Level{6, "FATAL"}
)
var Fstr = Fmsg

func LineFormatter

func LineFormatter(msg Msg) []byte

func Print

func Print(a ...interface{})

Prints the arguments to the Default Logger.

func Printf

func Printf(format string, a ...interface{})

type ByteFormatter

type ByteFormatter func(Msg) []byte

type Level

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

func (Level) LessThan

func (l Level) LessThan(r Level) bool

func (Level) LogString

func (l Level) LogString() string

type Logger

type Logger struct {
	LoggerImpl
}

Logger is a helper wrapping LoggerImpl.

func (Logger) FilterLevel

func (l Logger) FilterLevel(minLevel Level) Logger

func (Logger) Print

func (l Logger) Print(v ...interface{})

Helper for compatibility with "log".Logger.

func (Logger) Printf

func (l Logger) Printf(format string, a ...interface{})

Helper for compatibility with "log".Logger.

func (Logger) WithDefaultLevel

func (l Logger) WithDefaultLevel(level Level) Logger

func (Logger) WithFilter

func (l Logger) WithFilter(f func(Msg) bool) Logger

Returns a new logger that suppresses further propagation for messages if `f` returns false.

func (Logger) WithMap

func (l Logger) WithMap(f func(Msg) Msg) Logger

Returns a logger that for a given message propagates the result of `f` instead.

func (Logger) WithText

func (l Logger) WithText(f func(Msg) string) Logger

func (Logger) WithValues

func (l Logger) WithValues(v ...interface{}) Logger

Returns a logger that adds the given values to logged messages.

type LoggerFunc

type LoggerFunc func(Msg)

LoggerFunc is a helper type that implements LoggerImpl from just a logging function.

func (LoggerFunc) Log

func (me LoggerFunc) Log(m Msg)

type LoggerImpl

type LoggerImpl interface {
	Log(Msg)
}

LoggerImpl is the minimal interface for Logger.

type Msg

type Msg struct {
	MsgImpl
}

func Call

func Call() Msg

func Fmsg

func Fmsg(format string, a ...interface{}) Msg

func Str

func Str(s string) (m Msg)

func (Msg) Add

func (m Msg) Add(key, value interface{}) Msg

func (Msg) AddValue

func (m Msg) AddValue(v interface{}) Msg

func (Msg) AddValues

func (m Msg) AddValues(v ...interface{}) Msg

func (Msg) GetByKey

func (m Msg) GetByKey(key interface{}) (value interface{}, ok bool)

func (Msg) GetLevel

func (m Msg) GetLevel() (l Level, ok bool)

func (Msg) GetValueByType

func (m Msg) GetValueByType(p interface{}) bool

func (Msg) HasValue

func (m Msg) HasValue(v interface{}) (has bool)

func (Msg) Log

func (m Msg) Log(l Logger) Msg

rename sink

func (Msg) SetLevel

func (m Msg) SetLevel(level Level) Msg

func (Msg) Skip

func (m Msg) Skip(skip int) Msg

func (Msg) String

func (me Msg) String() string

func (Msg) With

func (m Msg) With(key, value interface{}) Msg

func (Msg) WithText

func (m Msg) WithText(f func(Msg) string) Msg

func (Msg) WithValues

func (m Msg) WithValues(v ...interface{}) Msg

TODO: What ordering should be applied to the values here, per MsgImpl.Values. For now they're traversed in order of the slice.

type MsgImpl

type MsgImpl interface {
	// Returns the message text. Allows for lazy evaluation/prefixing etc.
	Text() string
	// Sets the program counters in pc. Having it in the interface may allow us to cache/freeze them
	// for serialization etc.
	Callers(skip int, pc []uintptr) int
	// Iterates over the values as added LIFO.
	Values(callback iter.Callback)
}

The minimal interface required for the Msg helper/wrapper to operate on.

type StreamLogger

type StreamLogger struct {
	W   io.Writer
	Fmt ByteFormatter
}

func (StreamLogger) Log

func (me StreamLogger) Log(msg Msg)

Package Files

Documentation was rendered with GOOS=linux and GOARCH=amd64.

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