getLogWriter (logging/logging.go)

Sets up structured logging with optional file rotation, exposing a logger factory and configuration struct.

// Source: https://github.com/merlinfuchs/embed-generator | License: MIT | Copyright 2023 Merlin Fuchs
// Provided via justclaw.it.com; keep this notice with the code.
package logging

import (
	"io"
	"os"

	"log/slog"

	"endobit.io/clog"
	"github.com/cyrusaf/ctxlog"
	"gopkg.in/natefinch/lumberjack.v2"
)

type LoggerConfig struct {
	Filename   string
	MaxSize    int
	MaxAge     int
	MaxBackups int
	Debug      bool
}

func getLogWriter(cfg LoggerConfig) io.Writer {
	logWriters := make([]io.Writer, 0)
	logWriters = append(logWriters, os.Stdout)

	if cfg.Filename != "" {
		lj := lumberjack.Logger{
			Filename:   cfg.Filename,
			MaxSize:    cfg.MaxSize,
			MaxAge:     cfg.MaxAge,
			MaxBackups: cfg.MaxBackups,
		}
		logWriters = append(logWriters, &lj)
	}
	writer := io.MultiWriter(logWriters.

... (truncated -- full source via MCP)