Lumberjack hook for Logrus

[fallais]

Hello,

I propose a new hook for Lumberjack : https://github.com/fallais/logrus-lumberjack-hook

[renathoaz]

No need for that, You could only:

// Set the Lumberjack logger
lumberjackLogger := &lumberjack.Logger{
  Filename:   "/var/log/misc.log",
  MaxSize:    10,
  MaxBackups: 3,
  MaxAge:     3,
  LocalTime:  true,
}
logrus.SetOutput(lumberjackLogger)

[fallais]

Not really, because if you do this, you only log to a file. The hook allows to use logrus the default way and logging to a file.

[renathoaz]

Makes sense, Although we can accomplish it without setting the hook.

[pieterlouw]

@RenathoAzevedo, can you supply an example of how this can be achieved without a hook?

[phoenix147]

I do it like this:

	ljack := &lumberjack.Logger{
		Filename:   "logs/misc.log",
		MaxSize:    100, // megabytes
		MaxBackups: 52,
		MaxAge:     7,     //days
		Compress:   false, // disabled by default
	}
	mWriter := io.MultiWriter(os.Stderr, ljack)
	log.SetOutput(mWriter)

[jpiechowka]

@phoenix147 Thank you very much! Your solution works great. I have my logger configured as below:

package main

import (
	log "github.com/sirupsen/logrus"
	"time"
	"os"
	"github.com/natefinch/lumberjack"
	"runtime"
	"io"
)

const LogFilePath = "logs/misc.log"

func main() {
	// Setup logger
	lumberjackLogrotate := &lumberjack.Logger{
		Filename:   LogFilePath,
		MaxSize:    5,  // Max megabytes before log is rotated
		MaxBackups: 90, // Max number of old log files to keep
		MaxAge:     60, // Max number of days to retain log files
		Compress:   true,
	}

	log.SetFormatter(&log.TextFormatter{FullTimestamp: true, TimestampFormat: time.RFC1123Z})

	logMultiWriter := io.MultiWriter(os.Stdout, lumberjackLogrotate)
	log.SetOutput(logMultiWriter)

	log.WithFields(log.Fields{
		"Runtime Version": runtime.Version(),
		"Number of CPUs":  runtime.NumCPU(),
		"Arch":            runtime.GOARCH,
	}).Info("Application Initializing")
}

One can also set ForceColors property to true (There is Jetbrains GoLand IDE plugin called ANSI Highlighter that can parse log levels and colors when displaying log files)
log.SetFormatter(&log.TextFormatter{ForceColors: true, FullTimestamp: true, TimestampFormat: time.RFC1123Z})

[dgsb]

If someone could add these examples in the wiki or in the readme, that would be great.
We also have a page in the wiki which lists all the known hook which could be updated.

[yashi-gupta-mmt]

@renathoaz I tried your approach but it's not rotating the log file. It keeps writing logs to the same file. Here's my code.

lumberjackLogrotate := &lumberjack.Logger{
Filename: path,
MaxSize: 1,
}
ApiLog = logrus.New()
ApiLog.Formatter = &CustomFormatter{
prefix: 'stats',
}
ApiLog.SetOutput(lumberjackLogrotate)

Anyone facing the same problem?

[github-actions]

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[github-actions]

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