feat: log output

util/contextlogger/context.go

@@ -0,0 +1,24 @@
+package contextlogger
+
+import (
+	"context"
+	"log/slog"
+)
+
+type key int
+
+var loggerKey key
+
+func New(ctx context.Context, logger *slog.Logger) context.Context {
+	return context.WithValue(ctx, loggerKey, logger)
+}
+
+func From(ctx context.Context) *slog.Logger {
+	if ctxLogger := ctx.Value(loggerKey); ctxLogger != nil {
+		if logger, ok := ctxLogger.(*slog.Logger); ok {
+			return logger
+		}
+	}
+
+	return slog.New(discardHandler{})
+}