learn-go/snippetbox/cmd/web/logger.go

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package main
import (
"log/slog"
"os"
)
// loggerBuilder ...
func loggerBuilder(logfmt *string, loglevel *string) *slog.Logger {
var logger *slog.Logger
var handler_options slog.HandlerOptions
switch *loglevel {
case "DEBUG": handler_options = slog.HandlerOptions{Level: slog.LevelDebug}
case "INFO": handler_options = slog.HandlerOptions{Level: slog.LevelInfo}
case "WARN": handler_options = slog.HandlerOptions{Level: slog.LevelWarn}
case "ERROR": handler_options = slog.HandlerOptions{Level: slog.LevelError}
}
switch *logfmt {
case "json": logger = slog.New(slog.NewJSONHandler(os.Stdout, &handler_options))
default: logger = slog.New(slog.NewTextHandler(os.Stdout, &handler_options))
}
return logger
}