https://github.com/vgarvardt/slogex

Golang log/slog extensions
https://github.com/vgarvardt/slogex

extensions go golang logging testing

Last synced: about 1 year ago
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Golang log/slog extensions

• Host: GitHub
• URL: https://github.com/vgarvardt/slogex
• Owner: vgarvardt
• License: apache-2.0
• Created: 2024-01-05T19:37:02.000Z (over 2 years ago)
• Default Branch: master
• Last Pushed: 2025-04-01T16:44:01.000Z (about 1 year ago)
• Last Synced: 2025-04-26T05:48:08.918Z (about 1 year ago)
• Topics: extensions, go, golang, logging, testing
• Language: Go
• Homepage:
• Size: 99.6 KB
• Stars: 2
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# slogex

[![GoDev](https://img.shields.io/static/v1?label=godev&message=reference&color=00add8)](https://pkg.go.dev/github.com/vgarvardt/slogex)

[![Coverage Status](https://codecov.io/gh/vgarvardt/slogex/branch/master/graph/badge.svg)](https://codecov.io/gh/vgarvardt/slogex)

[![ReportCard](https://goreportcard.com/badge/github.com/vgarvardt/slogex)](https://goreportcard.com/report/github.com/vgarvardt/slogex)

[![License](https://img.shields.io/badge/License-Apache_2.0-blue.svg)](https://opensource.org/license/apache-2-0/)

Collection of Golang `log/slog` logger extensions and related wrappers.

## Extensions

- [`github.com/vgarvardt/slogex/observer`](#githubcomvgarvardtslogexobserver) - `slog.Handler` implementation that keeps

  log records in memory. Useful for applications that want to test log output. Heavily inspired

  by `go.uber.org/zap/zaptest/observer`.

- [`github.com/vgarvardt/slogex/fxlogger`](#githubcomvgarvardtslogexfxlogger) - `go.uber.org/fx/fxevent.Logger`

  implementation.

## Examples

### `github.com/vgarvardt/slogex/observer`

```go

package something_test

import (

    "log/slog"

    "testing"

    "github.com/vgarvardt/slogex/observer"

)

func TestSomeLogs(t *testing.T) {

    handler, logs := observer.New(nil)

    logger := slog.New(handler).With(slog.Int("i", 1))

    logger.Info("foo")

    loggerRecords := logs.All()

    for _, r := range loggerRecords {

        t.Log(r.Record.Level, r.Record.Message, r.Attrs)

    }

}

```

## `github.com/vgarvardt/slogex/fxlogger`

```go

package main

import (

    "log/slog"

    "go.uber.org/fx"

    "go.uber.org/fx/fxevent"

    "github.com/vgarvardt/slogex/fxlogger"

)

func FxOptions() []fx.Option {

    return []fx.Option{

        fx.WithLogger(func(logger *slog.Logger) fxevent.Logger {

            return &fxlogger.Logger{

                Logger: logger.With(slog.String("source", "fx")),

            }

        }),

    }

}

```