log

Documentation

Index

• Constants
• Variables
• type DefaultLogger
  • func New(out io.Writer, prefix string, flag int) *DefaultLogger
  • func (l *DefaultLogger) Debug(v ...interface{})
  • func (l *DefaultLogger) Debugf(format string, v ...interface{})
  • func (l *DefaultLogger) Error(v ...interface{})
  • func (l *DefaultLogger) Errorf(format string, v ...interface{})
  • func (l *DefaultLogger) Fatal(v ...interface{})
  • func (l *DefaultLogger) Fatalf(format string, v ...interface{})
  • func (l *DefaultLogger) Fatalln(v ...interface{})
  • func (l *DefaultLogger) Flags() int
  • func (l *DefaultLogger) Info(v ...interface{})
  • func (l *DefaultLogger) Infof(format string, v ...interface{})
  • func (l *DefaultLogger) Output(reqId string, lvl int, calldepth int, s string) error
  • func (l *DefaultLogger) Panic(v ...interface{})
  • func (l *DefaultLogger) Panicf(format string, v ...interface{})
  • func (l *DefaultLogger) Panicln(v ...interface{})
  • func (l *DefaultLogger) Prefix() string
  • func (l *DefaultLogger) Print(v ...interface{})
  • func (l *DefaultLogger) Printf(format string, v ...interface{})
  • func (l *DefaultLogger) Println(v ...interface{})
  • func (l *DefaultLogger) SetFlags(flag int)
  • func (l *DefaultLogger) SetPrefix(prefix string)
  • func (l *DefaultLogger) SingleStack(v ...interface{})
  • func (l *DefaultLogger) Stack(v ...interface{})
  • func (l *DefaultLogger) Stat() (stats []int64)
  • func (l *DefaultLogger) Warn(v ...interface{})
  • func (l *DefaultLogger) Warnf(format string, v ...interface{})
• type Logger

Constants

const (
	// Bits or'ed together to control what's printed. There is no control over the
	// order they appear (the order listed here) or the format they present (as
	// described in the comments).  A colon appears after these items:
	//      2009/0123 01:23:23.123123 /a/b/c/d.go:23: message
	Ldate         = 1 << iota                     // the date: 2009/0123
	Ltime                                         // the time: 01:23:23
	Lmicroseconds                                 // microsecond resolution: 01:23:23.123123.  assumes Ltime.
	Llongfile                                     // full file name and line number: /a/b/c/d.go:23
	Lshortfile                                    // final file name element and line number: d.go:23. overrides Llongfile
	Lmodule                                       // module name
	Llevel                                        // level: 0(Debug), 1(Info), 2(Warn), 3(Error), 4(Panic), 5(Fatal)
	LstdFlags     = Ldate | Ltime | Lmicroseconds // initial values for the standard logger
	Ldefault      = Lmodule | Llevel | Lshortfile | LstdFlags
)

These flags define which text to prefix to each log entry generated by the DefaultLogger.

const (
	Ldebug = iota
	Linfo
	Lwarn
	Lerror
	Lpanic
	Lfatal
)

log level

Variables

var Std = New(os.Stderr, "", Ldefault)

Types

type DefaultLogger

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

A DefaultLogger represents an active logging object that generates lines of output to an io.Writer. Each logging operation makes a single call to the Writer's Write method. A DefaultLogger can be used simultaneously from multiple goroutines; it guarantees to serialize access to the Writer.

func New

func New(out io.Writer, prefix string, flag int) *DefaultLogger

New creates a new DefaultLogger. The out variable sets the destination to which log data will be written. The prefix appears at the beginning of each generated log line. The flag argument defines the logging properties.

func (*DefaultLogger) Debug

func (l *DefaultLogger) Debug(v ...interface{})

func (*DefaultLogger) Debugf

func (l *DefaultLogger) Debugf(format string, v ...interface{})

func (*DefaultLogger) Error

func (l *DefaultLogger) Error(v ...interface{})

func (*DefaultLogger) Errorf

func (l *DefaultLogger) Errorf(format string, v ...interface{})

func (*DefaultLogger) Fatal

func (l *DefaultLogger) Fatal(v ...interface{})

func (*DefaultLogger) Fatalf

func (l *DefaultLogger) Fatalf(format string, v ...interface{})

Fatalf is equivalent to l.Printf() followed by a call to os.Exit(1).

func (*DefaultLogger) Fatalln

func (l *DefaultLogger) Fatalln(v ...interface{})

Fatalln is equivalent to l.Println() followed by a call to os.Exit(1).

func (*DefaultLogger) Flags

func (l *DefaultLogger) Flags() int

Flags returns the output flags for the logger.

func (*DefaultLogger) Info

func (l *DefaultLogger) Info(v ...interface{})

func (*DefaultLogger) Infof

func (l *DefaultLogger) Infof(format string, v ...interface{})

func (*DefaultLogger) Output

func (l *DefaultLogger) Output(reqId string, lvl int, calldepth int, s string) error

Output writes the output for a logging event. The string s contains the text to print after the prefix specified by the flags of the DefaultLogger. A newline is appended if the last character of s is not already a newline. Calldepth is used to recover the PC and is provided for generality, although at the moment on all pre-defined paths it will be 2.

func (*DefaultLogger) Panic

func (l *DefaultLogger) Panic(v ...interface{})

Panic is equivalent to l.Print() followed by a call to panic().

func (*DefaultLogger) Panicf

func (l *DefaultLogger) Panicf(format string, v ...interface{})

Panicf is equivalent to l.Printf() followed by a call to panic().

func (*DefaultLogger) Panicln

func (l *DefaultLogger) Panicln(v ...interface{})

Panicln is equivalent to l.Println() followed by a call to panic().

func (*DefaultLogger) Prefix

func (l *DefaultLogger) Prefix() string

Prefix returns the output prefix for the logger.

func (*DefaultLogger) Print

func (l *DefaultLogger) Print(v ...interface{})

Print calls l.Output to print to the logger. Arguments are handled in the manner of fmt.Print.

func (*DefaultLogger) Printf

func (l *DefaultLogger) Printf(format string, v ...interface{})

Printf calls l.Output to print to the logger. Arguments are handled in the manner of fmt.Printf.

func (*DefaultLogger) Println

func (l *DefaultLogger) Println(v ...interface{})

Println calls l.Output to print to the logger. Arguments are handled in the manner of fmt.Println.

func (*DefaultLogger) SetFlags

func (l *DefaultLogger) SetFlags(flag int)

SetFlags sets the output flags for the logger.

func (*DefaultLogger) SetPrefix

func (l *DefaultLogger) SetPrefix(prefix string)

SetPrefix sets the output prefix for the logger.

func (*DefaultLogger) SingleStack

func (l *DefaultLogger) SingleStack(v ...interface{})

func (*DefaultLogger) Stack

func (l *DefaultLogger) Stack(v ...interface{})

func (*DefaultLogger) Stat

func (l *DefaultLogger) Stat() (stats []int64)

func (*DefaultLogger) Warn

func (l *DefaultLogger) Warn(v ...interface{})

func (*DefaultLogger) Warnf

func (l *DefaultLogger) Warnf(format string, v ...interface{})

type Logger

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

	Info(v ...interface{})
	Infof(format string, v ...interface{})

	Warn(v ...interface{})
	Warnf(format string, v ...interface{})

	Errorf(format string, v ...interface{})
	Error(v ...interface{})
}

A Logger represents an active logging object that generates lines of output to an io.Writer. Each logging operation makes a single call to the Writer's Write method. A Logger can be used simultaneously from multiple goroutines; it guarantees to serialize access to the Writer.