first commit

pkg/validate/interceptor.go

@@ -0,0 +1,37 @@
+package validate
+
+import (
+	"context"
+
+	"buf.build/go/protovalidate"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+	"google.golang.org/protobuf/proto"
+)
+
+// UnaryServerInterceptor runs protovalidate on every unary request before logic.
+func UnaryServerInterceptor(v protovalidate.Validator) grpc.UnaryServerInterceptor {
+	return func(
+		ctx context.Context,
+		req any,
+		_ *grpc.UnaryServerInfo,
+		handler grpc.UnaryHandler,
+	) (any, error) {
+		if msg, ok := req.(proto.Message); ok {
+			if err := v.Validate(msg); err != nil {
+				return nil, status.Error(codes.InvalidArgument, err.Error())
+			}
+		}
+		return handler(ctx, req)
+	}
+}
+
+// MustNew creates a Validator or panics.
+func MustNew() protovalidate.Validator {
+	v, err := protovalidate.New()
+	if err != nil {
+		panic(err)
+	}
+	return v
+}