slog

This example shows how to use the slog backend with JSON output. The slog backend is the default and recommended backend.

package main

import (
	"context"

	"github.com/go-coldbrew/log"
	"github.com/go-coldbrew/log/loggers"

	cbslog "github.com/go-coldbrew/log/loggers/slog"
)

func main() {
	// Create a slog-backed logger with JSON output
	logger := cbslog.NewLogger(
		loggers.WithJSONLogs(true),
		loggers.WithCallerInfo(true),
	)

	// Set as the global logger
	log.SetLogger(log.NewLogger(logger))

	// Log normally — output goes through slog's JSONHandler
	ctx := context.Background()
	log.Info(ctx, "msg", "service started", "port", 8080)
}

Output:

This example shows how to configure the slog backend with text output and a custom log level.

package main

import (
	"context"

	"github.com/go-coldbrew/log"
	"github.com/go-coldbrew/log/loggers"

	cbslog "github.com/go-coldbrew/log/loggers/slog"
)

func main() {
	logger := cbslog.NewLogger(
		loggers.WithJSONLogs(false),
		loggers.WithLevel(loggers.DebugLevel),
	)
	log.SetLogger(log.NewLogger(logger))

	ctx := context.Background()
	log.Debug(ctx, "msg", "debug message", "detail", "verbose")
}

Output: