feat: add some api packages

internal/api/grpc/caos_errors.go

@@ -0,0 +1,46 @@
+package grpc
+
+import (
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+
+	caos_errs "github.com/caos/zitadel/internal/errors"
+)
+
+func CaosToGRPCError(err error) error {
+	if err == nil {
+		return nil
+	}
+	code, msg, ok := extract(err)
+	if !ok {
+		return status.Convert(err).Err()
+	}
+	return status.Error(code, msg)
+}
+
+func extract(err error) (c codes.Code, msg string, ok bool) {
+	switch caosErr := err.(type) {
+	case *caos_errs.AlreadyExistsError:
+		return codes.AlreadyExists, caosErr.GetMessage(), true
+	case *caos_errs.DeadlineExceededError:
+		return codes.DeadlineExceeded, caosErr.GetMessage(), true
+	case caos_errs.InternalError:
+		return codes.Internal, caosErr.GetMessage(), true
+	case *caos_errs.InvalidArgumentError:
+		return codes.InvalidArgument, caosErr.GetMessage(), true
+	case *caos_errs.NotFoundError:
+		return codes.NotFound, caosErr.GetMessage(), true
+	case *caos_errs.PermissionDeniedError:
+		return codes.PermissionDenied, caosErr.GetMessage(), true
+	case *caos_errs.PreconditionFailedError:
+		return codes.FailedPrecondition, caosErr.GetMessage(), true
+	case *caos_errs.UnauthenticatedError:
+		return codes.Unauthenticated, caosErr.GetMessage(), true
+	case *caos_errs.UnavailableError:
+		return codes.Unavailable, caosErr.GetMessage(), true
+	case *caos_errs.UnimplementedError:
+		return codes.Unimplemented, caosErr.GetMessage(), true
+	default:
+		return codes.Unknown, err.Error(), false
+	}
+}