flogger

package module
v0.0.0-...-f7a4368 Latest Latest
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 Go to latest Published: May 27, 2016 License: BSD-2-Clause Imports: 4 Imported by: 3

README

Flogger

###SUMMARY

Flogger provides a simple wrapper around go's base logging module to provide logging levels. Flogger provides the following features.

  • Logging levels capable of overloading output in desired language.
  • Allow redirection of stdout and stderr to capture panics and other messages.
  • Other packages can import and use flogger without having to define a specific logger.
  • If a logfile is not configured, output will log to stdout.
  • Is go routine safe.

###Example

package main

import (
    log "github.com/zdannar/flogger"
)

const (
    LOGFILE = "/tmp/example.log"
)


func main() {
    if err := log.OpenFile(LOGFILE, log.FLOG_APPEND, 0644); err != nil {
        log.Fatalf("Unable to open log file : %s", err)
    }
    log.SetLevel(log.INFO)

    log.RedirectStreams()

    log.Debugf("My name is %s", "mud")
    log.Infof("My name is %s", "Chuck Norris")
    log.Panic(" OH NO!... Don't panic!")
}

The output of /tmp/example.log

2013/10/13 17:33:38 logtest.go:21: : INFO : My name is Chuck Norris
2013/10/13 17:33:38 logtest.go:22: : PANIC :  OH NO!... Don't panic!
panic: : PANIC :  OH NO!... Don't panic!

goroutine 1 [running]:
github.com/ryanchapman/go-any-proxy/flogger.(*Flogger).flog(0xc20004b100, 0x5, 0x7f418ef8af78, 0x1, 0x1, ...)
        /home/zdannar/go_include/src/github.com/ryanchapman/go-any-proxy/flogger/flogger.go:71 +0x1e1
github.com/ryanchapman/go-any-proxy/flogger.(*Flogger).Panic(0xc20004b100, 0x7f418ef8af78, 0x1, 0x1)
        /home/zdannar/go_include/src/github.com/ryanchapman/go-any-proxy/flogger/flogger.go:136 +0x4c
github.com/ryanchapman/go-any-proxy/flogger.Panic(0x7f418ef8af78, 0x1, 0x1)
        /home/zdannar/go_include/src/github.com/ryanchapman/go-any-proxy/flogger/base.go:94 +0x46
main.main()
        /home/zdannar/gitroot/qa-site-tank/go_include/logtest.go:22 +0x30d

goroutine 2 [runnable]:

###INSTALL

go get github.com/zdannar/flogger

Documentation

Overview

Flogger provides a simple wrapper around go's base logging library to provide logging levels. Further documentation can be found at https://github.com/zdannar/flogger

Index

Constants

View Source 
const (
	DEBUG int = iota
	INFO
	WARNING
	ERROR
	FATAL
	PANIC
)
View Source 
const (
	STDOUT = iota + 1
	STDERR
)

Variables

View Source 
var (
	FLOG_APPEND int = os.O_WRONLY | os.O_APPEND | os.O_CREATE
	FLOG_FORMAT int = log.LstdFlags | log.Lshortfile

	FLOG_LEVELS = map[int]string{
		DEBUG:   "DEBUG",
		INFO:    "INFO",
		WARNING: "WARNING",
		ERROR:   "ERROR",
		FATAL:   "FATAL",
		PANIC:   "PANIC",
	}
)

Functions

func Close 

func Close() error

Closes default logger's file descriptor.

func Debug 

func Debug(args ...interface{})

Calls f.Debug() on base logging object.

func Debugf 

func Debugf(msg string, args ...interface{})

Calls f.Debugf() on base logging object.

func Error 

func Error(args ...interface{})

Calls f.Error() on base logging object.

func Errorf 

func Errorf(msg string, args ...interface{})

Calls f.Errorf() on base logging object.

func Fatal 

func Fatal(args ...interface{})

Calls f.Fatal() on base logging object.

func Fatalf 

func Fatalf(msg string, args ...interface{})

Calls f.Fatalf() on base logging object.

func Info 

func Info(args ...interface{})

Calls f.Info() on base logging object.

func Infof 

func Infof(msg string, args ...interface{})

Calls f.Infof() on base logging object.

func OpenFile 

func OpenFile(logPath string, openMode int, perms os.FileMode) error

Opens default logger's file for writing.

func Panic 

func Panic(args ...interface{})

Calls f.Panic() on base logging object.

func Panicf 

func Panicf(msg string, args ...interface{})

Calls f.Panicf() on base logging object.

func RedirectStreams 

func RedirectStreams() error

Calls f.RedirectStreams() on base logging object.

func SetLevel 

func SetLevel(level int)

Sets the default logger's logging level.

func SetLevelMap 

func SetLevelMap(lmap map[int]string)

Sets the default logger's level map.

func Warning 

func Warning(args ...interface{})

Calls f.Warning() on base logging object.

func Warningf 

func Warningf(msg string, args ...interface{})

Calls f.Warningf() on base logging object.

Types

type Flogger 

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

Flogger structure.

func New 

func New(logLevel, logFormat int, levelMap map[int]string) *Flogger

Returns a flogger.Flogger structure for logging.

func (*Flogger) Close 

func (f *Flogger) Close() error

Flushes and closes file descriptor that flogger is logging to. Should always be called at the end of execution.

func (*Flogger) Debug 

func (f *Flogger) Debug(args ...interface{})

Logs to the debugging logging channel

func (*Flogger) Debugf 

func (f *Flogger) Debugf(msg string, args ...interface{})

Debug function with string formatting

func (*Flogger) Error 

func (f *Flogger) Error(args ...interface{})

Logs to the error logging channel

func (*Flogger) Errorf 

func (f *Flogger) Errorf(msg string, args ...interface{})

Error function with string formatting

func (*Flogger) Fatal 

func (f *Flogger) Fatal(args ...interface{})

Logs your message, then calls os.Exit(1).

func (*Flogger) Fatalf 

func (f *Flogger) Fatalf(msg string, args ...interface{})

Fatal function with string formatting

func (*Flogger) Info 

func (f *Flogger) Info(args ...interface{})

Logs to the info logging channel

func (*Flogger) Infof 

func (f *Flogger) Infof(msg string, args ...interface{})

Info function with string formatting

func (*Flogger) OpenFile 

func (f *Flogger) OpenFile(logPath string, openMode int, perms os.FileMode) error

Opens a file for flogger to log to.

func (*Flogger) Panic 

func (f *Flogger) Panic(args ...interface{})

Panics with your message.

func (*Flogger) Panicf 

func (f *Flogger) Panicf(msg string, args ...interface{})

Panic function with string formatting

func (*Flogger) RedirectStream 

func (f *Flogger) RedirectStream(fd int) error

Redirects file descriptor to log file. Example: flogger.RedirectStream(flogger.STDERR)

func (*Flogger) RedirectStreams 

func (f *Flogger) RedirectStreams() error

Redirects stdout and stderr to log file. Very handy to catch the output of panics in your log file.

func (*Flogger) SetLevel 

func (f *Flogger) SetLevel(level int)

Sets the logger level. Usually called with flogger.INFO, flogger.DEBUG, etc...

func (*Flogger) SetLevelMap 

func (f *Flogger) SetLevelMap(lmap map[int]string)

Sets logging level map. Provides the abilty to change level messages. Default logger uses flogger.FLOG_LEVELS

func (*Flogger) Warning 

func (f *Flogger) Warning(args ...interface{})

Logs to the warning logging channel

func (*Flogger) Warningf 

func (f *Flogger) Warningf(msg string, args ...interface{})

Warning function with string formatting

Source Files

View all Source files

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