https://github.com/ttys3/slogx

Simple slog wrapper for easy life, with opentelemetry tracing support
https://github.com/ttys3/slogx

console golang opentelemetry slog structured-logging trace-id tracing

Last synced: 4 months ago
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Simple slog wrapper for easy life, with opentelemetry tracing support

• Host: GitHub
• URL: https://github.com/ttys3/slogx
• Owner: ttys3
• Created: 2022-12-28T02:28:43.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2025-03-10T22:01:54.000Z (4 months ago)
• Last Synced: 2025-03-13T09:54:16.258Z (4 months ago)
• Topics: console, golang, opentelemetry, slog, structured-logging, trace-id, tracing
• Language: Go
• Homepage:
• Size: 70.3 KB
• Stars: 29
• Watchers: 1
• Forks: 2
• Open Issues: 4
• Metadata Files:
  • Readme: README.md

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README

        
# slogx

> `log/slog` stdlib requires go version >= 1.21.0

slog handler with opentelemetry tracing support and simple init helper method

trace_id in log

![image](https://github.com/ttys3/slogx/assets/41882455/281b00e7-fd7e-4e4c-b3e7-ea3f7ab27066)

added Apex log cli handler like handler (impl ref https://github.com/apex/log/blob/master/handlers/cli/cli.go)

![apex cli log like handler](https://user-images.githubusercontent.com/41882455/259750348-3f9b85ff-1403-482a-acfe-a028c7551185.png)

## usage

```go

package main

import (

    "context"

    "github.com/ttys3/slogx"

    "github.com/ttys3/tracing-go"

    "go.opentelemetry.io/otel"

    "log/slog"

    "io"

)

func main() {

	// init a new slog json handler at info level with output to stderr

	// and wrap it within a tracing handler

	logger := slogx.New(slogx.WithTracing())

	slog.SetDefault(logger)

	ctx := context.Background()

	// set up a recording tracer, non-recording span will not get a trace_id

	tpShutdown, err := tracing.InitProvider(ctx, tracing.WithStdoutTrace())

	if err != nil {

		panic(err)

	}

	defer tpShutdown(context.Background())

	ctx, newSpan := otel.Tracer("my-tracer-name").Start(ctx, "hello.Slog")

	defer newSpan.End()

	log := slog.With("user_id", 123456)

	// no trace_id in log

	log.Info("hello world")

	// has trace_id in log

	log.With("foo", "bar").ErrorContext(ctx, "have a nice day", "err", io.ErrClosedPipe)

	log.ErrorContext(ctx, "example error", "err", io.ErrClosedPipe)

}

```

## related projects

slog.Handler that writes tinted logs

https://github.com/lmittmann/tint/

Example ConsoleHandler for slog Logger

https://gist.github.com/wijayaerick/de3de10c47a79d5310968ba5ff101a19