/
subjects_delete.go
82 lines (64 loc) · 2.31 KB
/
subjects_delete.go
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package services
import (
"context"
"errors"
"text/template"
_ "embed"
grbac "github.com/animeapis/go-genproto/grbac/v1alpha1"
empty "google.golang.org/protobuf/types/known/emptypb"
"github.com/dgraph-io/dgo/v210"
"github.com/grbac/grbac/pkg/graph"
"github.com/sirupsen/logrus"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
//go:embed data/subjects/subjects.delete.query.go.tmpl
var queryDeleteSubject string
//go:embed data/subjects/subjects.delete.mutation.go.tmpl
var mutationDeleteSubject string
var templateQueryDeleteSubject = template.Must(
template.New("QueryDeleteSubject").Funcs(defaultFuncMap).Parse(queryDeleteSubject),
)
var templateMutationDeleteSubject = template.Must(
template.New("MutationDeleteSubject").Funcs(defaultFuncMap).Parse(mutationDeleteSubject),
)
func (s *AccessControlServerImpl) validateDeleteSubject(ctx context.Context, txn *dgo.Txn, req *grbac.DeleteSubjectRequest) error {
// The subject name must be defined.
if len(req.Name) == 0 {
return status.New(codes.InvalidArgument, "invalid argument {subject name not defined}").Err()
}
// The subject name must be well formatted.
if !isSubject(req.Name) {
return status.New(codes.InvalidArgument, "invalid argument {invalid subject name format}").Err()
}
// The subject must exist.
subjectFound, err := graph.ExistsSubject(ctx, txn, req.Name)
if err != nil {
logrus.WithError(err).Errorf("DeleteSubject: failed to query subject")
return status.New(codes.Internal, "internal error").Err()
}
if !subjectFound {
return status.New(codes.NotFound, "not found").Err()
}
return nil
}
// DeleteSubject deletes a subject.
func (s *AccessControlServerImpl) DeleteSubject(ctx context.Context, req *grbac.DeleteSubjectRequest) (*empty.Empty, error) {
txn := s.cli.NewTxn()
if err := s.validateDeleteSubject(ctx, txn, req); err != nil {
return nil, err
}
data := struct {
Name string
}{
Name: req.GetName(),
}
if err := s.delete(ctx, txn, templateQueryDeleteSubject, templateMutationDeleteSubject, data); err != nil {
if errors.Is(err, dgo.ErrAborted) {
return nil, status.New(codes.Aborted, "transaction has been aborted").Err()
}
logrus.WithError(err).Errorf("DeleteSubject: failed to execute dgraph call")
return nil, status.New(codes.Internal, "internal error").Err()
}
return &empty.Empty{}, nil
}