logging

package
Version: v1.0.0-alpha4 Latest Latest
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Published: Jun 13, 2018 License: Apache-2.0 Imports: 4 Imported by: 0

Documentation

Overview

Package logging enables setting custom logger implementation.

Basic Flow:
1) Initialize logger
2) Create new logger for specific module
3) Call log info
Example
Initialize(testdata.GetSampleLoggingProvider(&buf))
//Create new logger
logger := NewLogger(modName)

logger.Info("log test data")

fmt.Println("log info is completed")
Output:

log info is completed

Index

Examples

Constants

This section is empty.

Variables

This section is empty.

Functions

func Initialize

func Initialize(l api.LoggerProvider)

Initialize sets new logger which takes over logging operations. It is required to call this function before making any loggings.

Example
Initialize(testdata.GetSampleLoggingProvider(&buf))

fmt.Println("log is completed")
Output:

log is completed

func IsEnabledFor

func IsEnabledFor(module string, level Level) bool

IsEnabledFor - Check if given log level is enabled for given module

Parameters:
module is module name
level is logging level

Returns:
is logging enabled for this module and level
Example
Initialize(testdata.GetSampleLoggingProvider(&buf))

isEnabled := IsEnabledFor(modName, DEBUG)

if !isEnabled {
	fmt.Println("log level debug is enabled")
	return
}

fmt.Println("log is completed")
Output:

log is completed

func SetLevel

func SetLevel(module string, level Level)

SetLevel - setting log level for given module

Parameters:
module is module name
level is logging level
Example
Initialize(testdata.GetSampleLoggingProvider(&buf))

SetLevel(modName, INFO)

fmt.Println("log is completed")
Output:

log is completed

Types

type Level

type Level int

Level defines all available log levels for log messages.

const (
	CRITICAL Level = iota
	ERROR
	WARNING
	INFO
	DEBUG
)

Log levels.

func GetLevel

func GetLevel(module string) Level

GetLevel - getting log level for given module

Parameters:
module is module name

Returns:
logging level
Example
Initialize(testdata.GetSampleLoggingProvider(&buf))

SetLevel(modName, DEBUG)

l := GetLevel(modName)
if l != DEBUG {
	fmt.Println("log level is not debug")
	return
}

fmt.Println("log is completed")
Output:

log is completed

func LogLevel

func LogLevel(level string) (Level, error)

LogLevel returns the log level from a string representation.

Parameters:
level is logging level in string representation

Returns:
logging level
Example
Initialize(testdata.GetSampleLoggingProvider(&buf))

level, err := LogLevel("debug")
if err != nil {
	fmt.Printf("failed LogLevel: %s\n", err)
	return
}

if level != DEBUG {
	fmt.Println("log level is not debug")
	return
}
fmt.Println("log is completed")
Output:

log is completed

type Logger

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

Logger basic implementation of api.Logger interface

func NewLogger

func NewLogger(module string) *Logger

NewLogger creates and returns a Logger object based on the module name.

Example
Initialize(testdata.GetSampleLoggingProvider(&buf))
//Create new logger
NewLogger(modName)

fmt.Println("log is completed")
Output:

log is completed

func (*Logger) Debug

func (l *Logger) Debug(args ...interface{})

Debug calls Debug function of underlying logger

func (*Logger) Debugf

func (l *Logger) Debugf(format string, args ...interface{})

Debugf calls Debugf function of underlying logger

func (*Logger) Debugln

func (l *Logger) Debugln(args ...interface{})

Debugln calls Debugln function of underlying logger

func (*Logger) Error

func (l *Logger) Error(args ...interface{})

Error calls Error function of underlying logger

func (*Logger) Errorf

func (l *Logger) Errorf(format string, args ...interface{})

Errorf calls Errorf function of underlying logger

func (*Logger) Errorln

func (l *Logger) Errorln(args ...interface{})

Errorln calls Errorln function of underlying logger

func (*Logger) Fatal

func (l *Logger) Fatal(args ...interface{})

Fatal calls Fatal function of underlying logger

func (*Logger) Fatalf

func (l *Logger) Fatalf(format string, args ...interface{})

Fatalf calls Fatalf function of underlying logger

func (*Logger) Fatalln

func (l *Logger) Fatalln(args ...interface{})

Fatalln calls Fatalln function of underlying logger

func (*Logger) Info

func (l *Logger) Info(args ...interface{})

Info calls Info function of underlying logger

func (*Logger) Infof

func (l *Logger) Infof(format string, args ...interface{})

Infof calls Infof function of underlying logger

func (*Logger) Infoln

func (l *Logger) Infoln(args ...interface{})

Infoln calls Infoln function of underlying logger

func (*Logger) Panic

func (l *Logger) Panic(args ...interface{})

Panic calls Panic function of underlying logger

func (*Logger) Panicf

func (l *Logger) Panicf(format string, args ...interface{})

Panicf calls Panicf function of underlying logger

func (*Logger) Panicln

func (l *Logger) Panicln(args ...interface{})

Panicln calls Panicln function of underlying logger

func (*Logger) Print

func (l *Logger) Print(args ...interface{})

Print calls Print function of underlying logger

func (*Logger) Printf

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

Printf calls Printf function of underlying logger

func (*Logger) Println

func (l *Logger) Println(args ...interface{})

Println calls Println function of underlying logger

func (*Logger) Warn

func (l *Logger) Warn(args ...interface{})

Warn calls Warn function of underlying logger

func (*Logger) Warnf

func (l *Logger) Warnf(format string, args ...interface{})

Warnf calls Warnf function of underlying logger

func (*Logger) Warnln

func (l *Logger) Warnln(args ...interface{})

Warnln calls Warnln function of underlying logger

Source Files

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