logging and middleware chaining

internal/logging/logging.go

@@ -4,6 +4,8 @@ import (
 	"context"
 	"log/slog"
 	"os"
+
+	"gitea.michaelthomson.dev/mthomson/habits/internal/middleware"
 )
 
 type ContextHandler struct {
@@ -11,8 +13,8 @@ type ContextHandler struct {
 }
 
 func (h *ContextHandler) Handle(ctx context.Context, r slog.Record) error {
-	if requestID, ok := ctx.Value("trace_id").(string); ok {
-		r.AddAttrs(slog.String("trace_id", requestID))
+	if requestID, ok := ctx.Value(middleware.TraceIdKey).(string); ok {
+		r.AddAttrs(slog.String(string(middleware.TraceIdKey), requestID))
 	}
 	return h.Handler.Handle(ctx, r)
 }