SyncStart starts a unit in the dependency graph.
(_ context.Context, req *proto.SyncStartRequest)
| 52 | |
| 53 | // SyncStart starts a unit in the dependency graph. |
| 54 | func (s *DRPCAgentSocketService) SyncStart(_ context.Context, req *proto.SyncStartRequest) (*proto.SyncStartResponse, error) { |
| 55 | if s.unitManager == nil { |
| 56 | return nil, xerrors.Errorf("SyncStart: %w", ErrUnitManagerNotAvailable) |
| 57 | } |
| 58 | |
| 59 | unitID := unit.ID(req.Unit) |
| 60 | |
| 61 | if err := s.unitManager.Register(unitID); err != nil { |
| 62 | if !errors.Is(err, unit.ErrUnitAlreadyRegistered) { |
| 63 | return nil, xerrors.Errorf("SyncStart: %w", err) |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | isReady, err := s.unitManager.IsReady(unitID) |
| 68 | if err != nil { |
| 69 | return nil, xerrors.Errorf("cannot check readiness: %w", err) |
| 70 | } |
| 71 | if !isReady { |
| 72 | return nil, xerrors.Errorf("cannot start unit %q: unit not ready", req.Unit) |
| 73 | } |
| 74 | |
| 75 | err = s.unitManager.UpdateStatus(unitID, unit.StatusStarted) |
| 76 | if err != nil { |
| 77 | return nil, xerrors.Errorf("cannot start unit %q: %w", req.Unit, err) |
| 78 | } |
| 79 | |
| 80 | return &proto.SyncStartResponse{}, nil |
| 81 | } |
| 82 | |
| 83 | // SyncWant declares a dependency between units. |
| 84 | func (s *DRPCAgentSocketService) SyncWant(_ context.Context, req *proto.SyncWantRequest) (*proto.SyncWantResponse, error) { |