init

pkg/validate/validate.go

@@ -0,0 +1,24 @@
+package validate
+
+import (
+	"context"
+
+	"github.com/go-kratos/kratos/v2/errors"
+	"github.com/go-kratos/kratos/v2/middleware"
+	"go.einride.tech/aip/fieldbehavior"
+	"google.golang.org/protobuf/proto"
+)
+
+// Middleware is a middleware that validates the request message with [FieldBehavior](https://google.aip.dev/203)
+func Middleware() middleware.Middleware {
+	return func(handler middleware.Handler) middleware.Handler {
+		return func(ctx context.Context, req any) (reply any, err error) {
+			if msg, ok := req.(proto.Message); ok {
+				if err := fieldbehavior.ValidateRequiredFields(msg); err != nil {
+					return nil, errors.BadRequest("VALIDATOR", err.Error()).WithCause(err)
+				}
+			}
+			return handler(ctx, req)
+		}
+	}
+}