Transition from ex-GORM structs to sqlc structs (2/5)

Replace old used-to-be-GORM datastructures (#104305) with sqlc-generated
structs. This also makes it possible to use more specific structs that
are more taylored to the specific queries, increasing efficiency.

This commit mostly deals with workers, including the sleep schedule and
task scheduler.

Functional changes are kept to a minimum, as the API still serves the
same data.

Because this work covers so much of Flamenco's code, it's been split up
into different commits. Each commit brings Flamenco to a state where it
compiles and unit tests pass. Only the result of the final commit has
actually been tested properly.

Ref: #104343

internal/manager/api_impl/interfaces.go

@@ -76,6 +76,7 @@ type PersistenceService interface {
 	FetchWorkerTags(ctx context.Context) ([]*persistence.WorkerTag, error)
 	DeleteWorkerTag(ctx context.Context, uuid string) error
 	SaveWorkerTag(ctx context.Context, tag *persistence.WorkerTag) error
+	FetchTagsOfWorker(ctx context.Context, workerUUID string) ([]persistence.WorkerTag, error)
 
 	// WorkersLeftToRun returns a set of worker UUIDs that can run tasks of the given type on the given job.
 	WorkersLeftToRun(ctx context.Context, job *persistence.Job, taskType string) (map[string]bool, error)

internal/manager/api_impl/mocks/api_impl_mock.gen.go

@@ -44,7 +44,7 @@ func (m *MockPersistenceService) EXPECT() *MockPersistenceServiceMockRecorder {
 }
 
 // AddWorkerToJobBlocklist mocks base method.
-func (m *MockPersistenceService) AddWorkerToJobBlocklist(arg0 context.Context, arg1 *persistence.Job, arg2 *persistence.Worker, arg3 string) error {
+func (m *MockPersistenceService) AddWorkerToJobBlocklist(arg0 context.Context, arg1 *persistence.Job, arg2 *sqlc.Worker, arg3 string) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "AddWorkerToJobBlocklist", arg0, arg1, arg2, arg3)
 	ret0, _ := ret[0].(error)
@@ -58,7 +58,7 @@ func (mr *MockPersistenceServiceMockRecorder) AddWorkerToJobBlocklist(arg0, arg1
 }
 
 // AddWorkerToTaskFailedList mocks base method.
-func (m *MockPersistenceService) AddWorkerToTaskFailedList(arg0 context.Context, arg1 *persistence.Task, arg2 *persistence.Worker) (int, error) {
+func (m *MockPersistenceService) AddWorkerToTaskFailedList(arg0 context.Context, arg1 *persistence.Task, arg2 *sqlc.Worker) (int, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "AddWorkerToTaskFailedList", arg0, arg1, arg2)
 	ret0, _ := ret[0].(int)
@@ -115,7 +115,7 @@ func (mr *MockPersistenceServiceMockRecorder) ClearJobBlocklist(arg0, arg1 inter
 }
 
 // CountTaskFailuresOfWorker mocks base method.
-func (m *MockPersistenceService) CountTaskFailuresOfWorker(arg0 context.Context, arg1 *persistence.Job, arg2 *persistence.Worker, arg3 string) (int, error) {
+func (m *MockPersistenceService) CountTaskFailuresOfWorker(arg0 context.Context, arg1 *persistence.Job, arg2 *sqlc.Worker, arg3 string) (int, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "CountTaskFailuresOfWorker", arg0, arg1, arg2, arg3)
 	ret0, _ := ret[0].(int)
@@ -130,7 +130,7 @@ func (mr *MockPersistenceServiceMockRecorder) CountTaskFailuresOfWorker(arg0, ar
 }
 
 // CreateWorker mocks base method.
-func (m *MockPersistenceService) CreateWorker(arg0 context.Context, arg1 *persistence.Worker) error {
+func (m *MockPersistenceService) CreateWorker(arg0 context.Context, arg1 *sqlc.Worker) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "CreateWorker", arg0, arg1)
 	ret0, _ := ret[0].(error)
@@ -230,6 +230,21 @@ func (mr *MockPersistenceServiceMockRecorder) FetchJobs(arg0 interface{}) *gomoc
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "FetchJobs", reflect.TypeOf((*MockPersistenceService)(nil).FetchJobs), arg0)
 }
 
+// FetchTagsOfWorker mocks base method.
+func (m *MockPersistenceService) FetchTagsOfWorker(arg0 context.Context, arg1 string) ([]persistence.WorkerTag, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "FetchTagsOfWorker", arg0, arg1)
+	ret0, _ := ret[0].([]persistence.WorkerTag)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// FetchTagsOfWorker indicates an expected call of FetchTagsOfWorker.
+func (mr *MockPersistenceServiceMockRecorder) FetchTagsOfWorker(arg0, arg1 interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "FetchTagsOfWorker", reflect.TypeOf((*MockPersistenceService)(nil).FetchTagsOfWorker), arg0, arg1)
+}
+
 // FetchTask mocks base method.
 func (m *MockPersistenceService) FetchTask(arg0 context.Context, arg1 string) (*persistence.Task, error) {
 	m.ctrl.T.Helper()
@@ -246,10 +261,10 @@ func (mr *MockPersistenceServiceMockRecorder) FetchTask(arg0, arg1 interface{})
 }
 
 // FetchTaskFailureList mocks base method.
-func (m *MockPersistenceService) FetchTaskFailureList(arg0 context.Context, arg1 *persistence.Task) ([]*persistence.Worker, error) {
+func (m *MockPersistenceService) FetchTaskFailureList(arg0 context.Context, arg1 *persistence.Task) ([]*sqlc.Worker, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "FetchTaskFailureList", arg0, arg1)
-	ret0, _ := ret[0].([]*persistence.Worker)
+	ret0, _ := ret[0].([]*sqlc.Worker)
 	ret1, _ := ret[1].(error)
 	return ret0, ret1
 }
@@ -276,10 +291,10 @@ func (mr *MockPersistenceServiceMockRecorder) FetchTaskJobUUID(arg0, arg1 interf
 }
 
 // FetchWorker mocks base method.
-func (m *MockPersistenceService) FetchWorker(arg0 context.Context, arg1 string) (*persistence.Worker, error) {
+func (m *MockPersistenceService) FetchWorker(arg0 context.Context, arg1 string) (*sqlc.Worker, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "FetchWorker", arg0, arg1)
-	ret0, _ := ret[0].(*persistence.Worker)
+	ret0, _ := ret[0].(*sqlc.Worker)
 	ret1, _ := ret[1].(error)
 	return ret0, ret1
 }
@@ -321,7 +336,7 @@ func (mr *MockPersistenceServiceMockRecorder) FetchWorkerTags(arg0 interface{})
 }
 
 // FetchWorkerTask mocks base method.
-func (m *MockPersistenceService) FetchWorkerTask(arg0 context.Context, arg1 *persistence.Worker) (*persistence.Task, error) {
+func (m *MockPersistenceService) FetchWorkerTask(arg0 context.Context, arg1 *sqlc.Worker) (*persistence.Task, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "FetchWorkerTask", arg0, arg1)
 	ret0, _ := ret[0].(*persistence.Task)
@@ -336,10 +351,10 @@ func (mr *MockPersistenceServiceMockRecorder) FetchWorkerTask(arg0, arg1 interfa
 }
 
 // FetchWorkers mocks base method.
-func (m *MockPersistenceService) FetchWorkers(arg0 context.Context) ([]*persistence.Worker, error) {
+func (m *MockPersistenceService) FetchWorkers(arg0 context.Context) ([]*sqlc.Worker, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "FetchWorkers", arg0)
-	ret0, _ := ret[0].([]*persistence.Worker)
+	ret0, _ := ret[0].([]*sqlc.Worker)
 	ret1, _ := ret[1].(error)
 	return ret0, ret1
 }
@@ -423,7 +438,7 @@ func (mr *MockPersistenceServiceMockRecorder) SaveTaskActivity(arg0, arg1 interf
 }
 
 // SaveWorker mocks base method.
-func (m *MockPersistenceService) SaveWorker(arg0 context.Context, arg1 *persistence.Worker) error {
+func (m *MockPersistenceService) SaveWorker(arg0 context.Context, arg1 *sqlc.Worker) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "SaveWorker", arg0, arg1)
 	ret0, _ := ret[0].(error)
@@ -437,7 +452,7 @@ func (mr *MockPersistenceServiceMockRecorder) SaveWorker(arg0, arg1 interface{})
 }
 
 // SaveWorkerStatus mocks base method.
-func (m *MockPersistenceService) SaveWorkerStatus(arg0 context.Context, arg1 *persistence.Worker) error {
+func (m *MockPersistenceService) SaveWorkerStatus(arg0 context.Context, arg1 *sqlc.Worker) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "SaveWorkerStatus", arg0, arg1)
 	ret0, _ := ret[0].(error)
@@ -465,7 +480,7 @@ func (mr *MockPersistenceServiceMockRecorder) SaveWorkerTag(arg0, arg1 interface
 }
 
 // ScheduleTask mocks base method.
-func (m *MockPersistenceService) ScheduleTask(arg0 context.Context, arg1 *persistence.Worker) (*persistence.Task, error) {
+func (m *MockPersistenceService) ScheduleTask(arg0 context.Context, arg1 *sqlc.Worker) (*persistence.Task, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "ScheduleTask", arg0, arg1)
 	ret0, _ := ret[0].(*persistence.Task)
@@ -522,7 +537,7 @@ func (mr *MockPersistenceServiceMockRecorder) TaskTouchedByWorker(arg0, arg1 int
 }
 
 // WorkerSeen mocks base method.
-func (m *MockPersistenceService) WorkerSeen(arg0 context.Context, arg1 *persistence.Worker) error {
+func (m *MockPersistenceService) WorkerSeen(arg0 context.Context, arg1 *sqlc.Worker) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "WorkerSeen", arg0, arg1)
 	ret0, _ := ret[0].(error)
@@ -536,7 +551,7 @@ func (mr *MockPersistenceServiceMockRecorder) WorkerSeen(arg0, arg1 interface{})
 }
 
 // WorkerSetTags mocks base method.
-func (m *MockPersistenceService) WorkerSetTags(arg0 context.Context, arg1 *persistence.Worker, arg2 []string) error {
+func (m *MockPersistenceService) WorkerSetTags(arg0 context.Context, arg1 *sqlc.Worker, arg2 []string) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "WorkerSetTags", arg0, arg1, arg2)
 	ret0, _ := ret[0].(error)
@@ -1017,7 +1032,7 @@ func (mr *MockTaskStateMachineMockRecorder) JobStatusChange(arg0, arg1, arg2, ar
 }
 
 // RequeueActiveTasksOfWorker mocks base method.
-func (m *MockTaskStateMachine) RequeueActiveTasksOfWorker(arg0 context.Context, arg1 *persistence.Worker, arg2 string) error {
+func (m *MockTaskStateMachine) RequeueActiveTasksOfWorker(arg0 context.Context, arg1 *sqlc.Worker, arg2 string) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "RequeueActiveTasksOfWorker", arg0, arg1, arg2)
 	ret0, _ := ret[0].(error)
@@ -1031,7 +1046,7 @@ func (mr *MockTaskStateMachineMockRecorder) RequeueActiveTasksOfWorker(arg0, arg
 }
 
 // RequeueFailedTasksOfWorkerOfJob mocks base method.
-func (m *MockTaskStateMachine) RequeueFailedTasksOfWorkerOfJob(arg0 context.Context, arg1 *persistence.Worker, arg2 *persistence.Job, arg3 string) error {
+func (m *MockTaskStateMachine) RequeueFailedTasksOfWorkerOfJob(arg0 context.Context, arg1 *sqlc.Worker, arg2 *persistence.Job, arg3 string) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "RequeueFailedTasksOfWorkerOfJob", arg0, arg1, arg2, arg3)
 	ret0, _ := ret[0].(error)

internal/manager/api_impl/support_test.go

@@ -236,7 +236,7 @@ func assertResponseNoBody(t *testing.T, echoCtx echo.Context, expectStatus int)
 
 func testWorker() persistence.Worker {
 	return persistence.Worker{
-		Model:              persistence.Model{ID: 1},
+		ID:                 1,
 		UUID:               "e7632d62-c3b8-4af0-9e78-01752928952c",
 		Name:               "дрон",
 		Address:            "fe80::5054:ff:fede:2ad7",

internal/manager/api_impl/worker_mgt.go

@@ -57,6 +57,15 @@ func (f *Flamenco) FetchWorker(e echo.Context, workerUUID string) error {
 		return sendAPIError(e, http.StatusInternalServerError, "error fetching worker: %v", err)
 	}
 
+	workerTags, err := f.persist.FetchTagsOfWorker(ctx, workerUUID)
+	switch {
+	case errors.Is(err, context.Canceled):
+		return handleConnectionClosed(e, logger, "fetching worker tags")
+	case err != nil:
+		logger.Error().AnErr("cause", err).Msg("fetching worker tags")
+		return sendAPIError(e, http.StatusInternalServerError, "error fetching worker tags: %v", err)
+	}
+
 	dbTask, err := f.persist.FetchWorkerTask(ctx, dbWorker)
 	switch {
 	case errors.Is(err, context.Canceled):
@@ -77,6 +86,20 @@ func (f *Flamenco) FetchWorker(e echo.Context, workerUUID string) error {
 		apiWorker.Task = &apiWorkerTask
 	}
 
+	// TODO: see which API calls actually need the worker tags, and whether it's
+	// better to just call a specific API operation in those cases.
+	if len(workerTags) > 0 {
+		apiTags := make([]api.WorkerTag, len(workerTags))
+		for index, tag := range workerTags {
+			apiTags[index].Id = &tag.UUID
+			apiTags[index].Name = tag.Name
+			if tag.Description != "" {
+				apiTags[index].Description = &tag.Description
+			}
+		}
+		apiWorker.Tags = &apiTags
+	}
+
 	return e.JSON(http.StatusOK, apiWorker)
 }
 
@@ -464,8 +487,8 @@ func workerSummary(w persistence.Worker) api.WorkerSummary {
 		}
 	}
 
-	if !w.LastSeenAt.IsZero() {
+	if w.LastSeenAt.Valid {
-		summary.LastSeen = &w.LastSeenAt
+		summary.LastSeen = &w.LastSeenAt.Time
 	}
 
 	return summary
@@ -478,15 +501,6 @@ func workerDBtoAPI(w persistence.Worker) api.Worker {
 		Platform:           w.Platform,
 		SupportedTaskTypes: w.TaskTypes(),
 	}
-
-	if len(w.Tags) > 0 {
-		tags := []api.WorkerTag{}
-		for i := range w.Tags {
-			tags = append(tags, *workerTagDBtoAPI(w.Tags[i]))
-		}
-		apiWorker.Tags = &tags
-	}
-
 	return apiWorker
 }
 

internal/manager/api_impl/worker_mgt_test.go

@@ -85,6 +85,15 @@ func TestFetchWorker(t *testing.T) {
 	require.NoError(t, err)
 	assertResponseAPIError(t, echo, http.StatusInternalServerError, "error fetching worker: some unknown error")
 
+	// Test database error fetching worker tags.
+	mf.persistence.EXPECT().FetchWorker(gomock.Any(), workerUUID).Return(&worker, nil)
+	mf.persistence.EXPECT().FetchTagsOfWorker(gomock.Any(), workerUUID).
+		Return(nil, errors.New("some tag fetching error"))
+	echo = mf.prepareMockedRequest(nil)
+	err = mf.flamenco.FetchWorker(echo, workerUUID)
+	require.NoError(t, err)
+	assertResponseAPIError(t, echo, http.StatusInternalServerError, "error fetching worker tags: some tag fetching error")
+
 	// Test with worker that does NOT have a status change requested, and DOES have an assigned task.
 	mf.persistence.EXPECT().FetchWorker(gomock.Any(), workerUUID).Return(&worker, nil)
 	assignedTask := persistence.Task{
@@ -93,6 +102,10 @@ func TestFetchWorker(t *testing.T) {
 		Job:    &persistence.Job{UUID: "f0e25ee4-0d13-4291-afc3-e9446b555aaf"},
 		Status: api.TaskStatusActive,
 	}
+	mf.persistence.EXPECT().FetchTagsOfWorker(gomock.Any(), workerUUID).Return([]persistence.WorkerTag{
+		{UUID: "0e701402-c4cc-49b0-8b8c-3eb8718d463a", Name: "EEVEE"},
+		{UUID: "59211f0a-81cc-4148-b0b7-32b3e2dcdb8f", Name: "Cycles"},
+	}, nil)
 	mf.persistence.EXPECT().FetchWorkerTask(gomock.Any(), &worker).Return(&assignedTask, nil)
 
 	echo = mf.prepareMockedRequest(nil)
@@ -116,12 +129,17 @@ func TestFetchWorker(t *testing.T) {
 			},
 			JobId: assignedTask.Job.UUID,
 		},
+		Tags: &[]api.WorkerTag{
+			{Id: ptr("0e701402-c4cc-49b0-8b8c-3eb8718d463a"), Name: "EEVEE"},
+			{Id: ptr("59211f0a-81cc-4148-b0b7-32b3e2dcdb8f"), Name: "Cycles"},
+		},
 	})
 
 	// Test with worker that does have a status change requested, but does NOT Have an assigned task.
 	requestedStatus := api.WorkerStatusAsleep
 	worker.StatusChangeRequest(requestedStatus, false)
 	mf.persistence.EXPECT().FetchWorker(gomock.Any(), workerUUID).Return(&worker, nil)
+	mf.persistence.EXPECT().FetchTagsOfWorker(gomock.Any(), workerUUID).Return([]persistence.WorkerTag{}, nil)
 	mf.persistence.EXPECT().FetchWorkerTask(gomock.Any(), &worker).Return(nil, nil)
 
 	echo = mf.prepareMockedRequest(nil)
@@ -170,7 +188,7 @@ func TestDeleteWorker(t *testing.T) {
 		Id:        worker.UUID,
 		Name:      worker.Name,
 		Status:    worker.Status,
-		Updated:   worker.UpdatedAt,
+		Updated:   worker.UpdatedAt.Time,
 		Version:   worker.Software,
 	})
 
@@ -201,7 +219,7 @@ func TestRequestWorkerStatusChange(t *testing.T) {
 		Id:      worker.UUID,
 		Name:    worker.Name,
 		Status:  prevStatus,
-		Updated: worker.UpdatedAt,
+		Updated: worker.UpdatedAt.Time,
 		Version: worker.Software,
 		StatusChange: &api.WorkerStatusChangeRequest{
 			Status: requestStatus,
@@ -245,7 +263,7 @@ func TestRequestWorkerStatusChangeRevert(t *testing.T) {
 		Id:           worker.UUID,
 		Name:         worker.Name,
 		Status:       currentStatus,
-		Updated:      worker.UpdatedAt,
+		Updated:      worker.UpdatedAt.Time,
 		Version:      worker.Software,
 		StatusChange: nil,
 	})

internal/manager/api_impl/worker_task_updates.go

@@ -52,7 +52,7 @@ func (f *Flamenco) TaskUpdate(e echo.Context, taskID string) error {
 			Msg("worker trying to update task that's not assigned to any worker")
 		return sendAPIError(e, http.StatusConflict, "task %+v is not assigned to any worker, so also not to you", taskID)
 	}
-	if *dbTask.WorkerID != worker.ID {
+	if *dbTask.WorkerID != uint(worker.ID) {
 		logger.Warn().Msg("worker trying to update task that's assigned to another worker")
 		return sendAPIError(e, http.StatusConflict, "task %+v is not assigned to you", taskID)
 	}

internal/manager/api_impl/worker_task_updates_test.go

@@ -36,7 +36,7 @@ func TestTaskUpdate(t *testing.T) {
 	mockTask := persistence.Task{
 		UUID:     taskID,
 		Worker:   &worker,
-		WorkerID: &worker.ID,
+		WorkerID: ptr(uint(worker.ID)),
 		Job:      &mockJob,
 		Activity: "pre-update activity",
 	}
@@ -105,7 +105,7 @@ func TestTaskUpdateFailed(t *testing.T) {
 	mockTask := persistence.Task{
 		UUID:     taskID,
 		Worker:   &worker,
-		WorkerID: &worker.ID,
+		WorkerID: ptr(uint(worker.ID)),
 		Job:      &mockJob,
 		Activity: "pre-update activity",
 		Type:     "misc",
@@ -189,7 +189,7 @@ func TestBlockingAfterFailure(t *testing.T) {
 	mockTask := persistence.Task{
 		UUID:     taskID,
 		Worker:   &worker,
-		WorkerID: &worker.ID,
+		WorkerID: ptr(uint(worker.ID)),
 		Job:      &mockJob,
 		Activity: "pre-update activity",
 		Type:     "misc",
@@ -339,7 +339,7 @@ func TestJobFailureAfterWorkerTaskFailure(t *testing.T) {
 	mockTask := persistence.Task{
 		UUID:     taskID,
 		Worker:   &worker,
-		WorkerID: &worker.ID,
+		WorkerID: ptr(uint(worker.ID)),
 		Job:      &mockJob,
 		Activity: "pre-update activity",
 		Type:     "misc",

internal/manager/api_impl/workers.go

@@ -582,7 +582,7 @@ func mayWorkerRun(worker *persistence.Worker, dbTask *persistence.Task) api.MayK
 			StatusChangeRequested: true,
 		}
 	}
-	if dbTask.WorkerID == nil || *dbTask.WorkerID != worker.ID {
+	if dbTask.WorkerID == nil || *dbTask.WorkerID != uint(worker.ID) {
 		return api.MayKeepRunning{Reason: "task not assigned to this worker"}
 	}
 	if !task_state_machine.IsRunnableTaskStatus(dbTask.Status) {

internal/manager/api_impl/workers_test.go

@@ -193,7 +193,7 @@ func TestWorkerSignOn(t *testing.T) {
 		Name:           "Lazy Boi",
 		PreviousStatus: &prevStatus,
 		Status:         api.WorkerStatusStarting,
-		Updated:        worker.UpdatedAt,
+		Updated:        worker.UpdatedAt.Time,
 		Version:        "3.0-testing",
 	})
 
@@ -249,7 +249,7 @@ func TestWorkerSignoffTaskRequeue(t *testing.T) {
 			IsLazy: false,
 			Status: api.WorkerStatusAwake,
 		},
-		Updated: worker.UpdatedAt,
+		Updated: worker.UpdatedAt.Time,
 		Version: worker.Software,
 	})
 
@@ -278,7 +278,7 @@ func TestWorkerRememberPreviousStatus(t *testing.T) {
 			IsLazy: false,
 			Status: api.WorkerStatusAwake,
 		},
-		Updated: worker.UpdatedAt,
+		Updated: worker.UpdatedAt.Time,
 		Version: worker.Software,
 	})
 
@@ -316,7 +316,7 @@ func TestWorkerDontRememberPreviousStatus(t *testing.T) {
 		PreviousStatus: ptr(api.WorkerStatusError),
 		Status:         api.WorkerStatusOffline,
 		StatusChange:   nil,
-		Updated:        worker.UpdatedAt,
+		Updated:        worker.UpdatedAt.Time,
 		Version:        worker.Software,
 	})
 
@@ -383,7 +383,7 @@ func TestWorkerStateChanged(t *testing.T) {
 		Name:           worker.Name,
 		PreviousStatus: &prevStatus,
 		Status:         api.WorkerStatusAsleep,
-		Updated:        worker.UpdatedAt,
+		Updated:        worker.UpdatedAt.Time,
 		Version:        worker.Software,
 	})
 
@@ -423,7 +423,7 @@ func TestWorkerStateChangedAfterChangeRequest(t *testing.T) {
 			Name:           worker.Name,
 			PreviousStatus: ptr(api.WorkerStatusOffline),
 			Status:         api.WorkerStatusStarting,
-			Updated:        worker.UpdatedAt,
+			Updated:        worker.UpdatedAt.Time,
 			Version:        worker.Software,
 			StatusChange: &api.WorkerStatusChangeRequest{
 				Status: api.WorkerStatusAsleep,
@@ -456,7 +456,7 @@ func TestWorkerStateChangedAfterChangeRequest(t *testing.T) {
 			Name:           worker.Name,
 			PreviousStatus: ptr(api.WorkerStatusStarting),
 			Status:         api.WorkerStatusAsleep,
-			Updated:        worker.UpdatedAt,
+			Updated:        worker.UpdatedAt.Time,
 			Version:        worker.Software,
 		})
 
@@ -526,7 +526,7 @@ func TestMayWorkerRun(t *testing.T) {
 		mf.persistence.EXPECT().TaskTouchedByWorker(gomock.Any(), &task).Return(nil)
 
 		echo := prepareRequest()
-		task.WorkerID = &worker.ID
+		task.WorkerID = ptr(uint(worker.ID))
 		err := mf.flamenco.MayWorkerRun(echo, task.UUID)
 		require.NoError(t, err)
 		assertResponseJSON(t, echo, http.StatusOK, api.MayKeepRunning{
@@ -537,7 +537,7 @@ func TestMayWorkerRun(t *testing.T) {
 	// Test: unhappy, assigned but cancelled.
 	{
 		echo := prepareRequest()
-		task.WorkerID = &worker.ID
+		task.WorkerID = ptr(uint(worker.ID))
 		task.Status = api.TaskStatusCanceled
 		err := mf.flamenco.MayWorkerRun(echo, task.UUID)
 		require.NoError(t, err)
@@ -551,7 +551,7 @@ func TestMayWorkerRun(t *testing.T) {
 	{
 		worker.StatusChangeRequest(api.WorkerStatusAsleep, false)
 		echo := prepareRequest()
-		task.WorkerID = &worker.ID
+		task.WorkerID = ptr(uint(worker.ID))
 		task.Status = api.TaskStatusActive
 		err := mf.flamenco.MayWorkerRun(echo, task.UUID)
 		require.NoError(t, err)
@@ -569,7 +569,7 @@ func TestMayWorkerRun(t *testing.T) {
 
 		worker.StatusChangeRequest(api.WorkerStatusAsleep, true)
 		echo := prepareRequest()
-		task.WorkerID = &worker.ID
+		task.WorkerID = ptr(uint(worker.ID))
 		task.Status = api.TaskStatusActive
 		err := mf.flamenco.MayWorkerRun(echo, task.UUID)
 		require.NoError(t, err)

internal/manager/eventbus/events_workers.go

@@ -18,7 +18,7 @@ func NewWorkerUpdate(worker *persistence.Worker) api.EventWorkerUpdate {
 		Name:       worker.Name,
 		Status:     worker.Status,
 		Version:    worker.Software,
-		Updated:    worker.UpdatedAt,
+		Updated:    worker.UpdatedAt.Time,
 		CanRestart: worker.CanRestart,
 	}
 
@@ -29,8 +29,8 @@ func NewWorkerUpdate(worker *persistence.Worker) api.EventWorkerUpdate {
 		}
 	}
 
-	if !worker.LastSeenAt.IsZero() {
+	if worker.LastSeenAt.Valid {
-		workerUpdate.LastSeen = &worker.LastSeenAt
+		workerUpdate.LastSeen = &worker.LastSeenAt.Time
 	}
 
 	// TODO: add tag IDs.

internal/manager/persistence/conversion.go

@@ -0,0 +1,16 @@
+package persistence
+
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+import "database/sql"
+
+func nullTimeToUTC(t sql.NullTime) sql.NullTime {
+	return sql.NullTime{
+		Time:  t.Time.UTC(),
+		Valid: t.Valid,
+	}
+}
+
+func ptr[T any](value T) *T {
+	return &value
+}

internal/manager/persistence/conversion_test.go

@@ -0,0 +1,44 @@
+package persistence
+
+import (
+	"database/sql"
+	"reflect"
+	"testing"
+)
+
+func Test_nullTimeToUTC(t *testing.T) {
+
+	inUTC := mustParseTime("2024-11-11T20:12:47Z")
+	inBangkok := mustParseTime("2024-11-12T03:12:47+07:00")
+
+	tests := []struct {
+		name string
+		arg  sql.NullTime
+		want sql.NullTime
+	}{
+		{"zero", sql.NullTime{}, sql.NullTime{}},
+		{"invalid-nonzero-utc",
+			sql.NullTime{Time: inUTC, Valid: false},
+			sql.NullTime{Time: inUTC, Valid: false},
+		},
+		{"valid-nonzero-utc",
+			sql.NullTime{Time: inUTC, Valid: true},
+			sql.NullTime{Time: inUTC, Valid: true},
+		},
+		{"invalid-nonzero-bangkok",
+			sql.NullTime{Time: inBangkok, Valid: false},
+			sql.NullTime{Time: inUTC, Valid: false},
+		},
+		{"valid-nonzero-bangkok",
+			sql.NullTime{Time: inBangkok, Valid: true},
+			sql.NullTime{Time: inUTC, Valid: true},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := nullTimeToUTC(tt.arg); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("nullTimeToUTC() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}

internal/manager/persistence/errors.go

@@ -37,19 +37,19 @@ func (e PersistenceError) Is(err error) bool {
 }
 
 func jobError(errorToWrap error, message string, msgArgs ...interface{}) error {
-	return wrapError(translateGormJobError(errorToWrap), message, msgArgs...)
+	return wrapError(translateJobError(errorToWrap), message, msgArgs...)
 }
 
 func taskError(errorToWrap error, message string, msgArgs ...interface{}) error {
-	return wrapError(translateGormTaskError(errorToWrap), message, msgArgs...)
+	return wrapError(translateTaskError(errorToWrap), message, msgArgs...)
 }
 
 func workerError(errorToWrap error, message string, msgArgs ...interface{}) error {
-	return wrapError(translateGormWorkerError(errorToWrap), message, msgArgs...)
+	return wrapError(translateWorkerError(errorToWrap), message, msgArgs...)
 }
 
 func workerTagError(errorToWrap error, message string, msgArgs ...interface{}) error {
-	return wrapError(translateGormWorkerTagError(errorToWrap), message, msgArgs...)
+	return wrapError(translateWorkerTagError(errorToWrap), message, msgArgs...)
 }
 
 func wrapError(errorToWrap error, message string, format ...interface{}) error {
@@ -73,36 +73,36 @@ func wrapError(errorToWrap error, message string, format ...interface{}) error {
 	}
 }
 
-// translateGormJobError translates a Gorm error to a persistence layer error.
+// translateJobError translates a Gorm error to a persistence layer error.
 // This helps to keep Gorm as "implementation detail" of the persistence layer.
-func translateGormJobError(err error) error {
+func translateJobError(err error) error {
 	if errors.Is(err, sql.ErrNoRows) {
 		return ErrJobNotFound
 	}
 	return err
 }
 
-// translateGormTaskError translates a Gorm error to a persistence layer error.
+// translateTaskError translates a Gorm error to a persistence layer error.
 // This helps to keep Gorm as "implementation detail" of the persistence layer.
-func translateGormTaskError(err error) error {
+func translateTaskError(err error) error {
 	if errors.Is(err, sql.ErrNoRows) {
 		return ErrTaskNotFound
 	}
 	return err
 }
 
-// translateGormWorkerError translates a Gorm error to a persistence layer error.
+// translateWorkerError translates a Gorm error to a persistence layer error.
 // This helps to keep Gorm as "implementation detail" of the persistence layer.
-func translateGormWorkerError(err error) error {
+func translateWorkerError(err error) error {
 	if errors.Is(err, sql.ErrNoRows) {
 		return ErrWorkerNotFound
 	}
 	return err
 }
 
-// translateGormWorkerTagError translates a Gorm error to a persistence layer error.
+// translateWorkerTagError translates a Gorm error to a persistence layer error.
 // This helps to keep Gorm as "implementation detail" of the persistence layer.
-func translateGormWorkerTagError(err error) error {
+func translateWorkerTagError(err error) error {
 	if errors.Is(err, sql.ErrNoRows) {
 		return ErrWorkerTagNotFound
 	}

internal/manager/persistence/errors_test.go

@@ -17,18 +17,18 @@ func TestNotFoundErrors(t *testing.T) {
 	assert.Contains(t, ErrTaskNotFound.Error(), "task")
 }
 
-func TestTranslateGormJobError(t *testing.T) {
+func TestTranslateJobError(t *testing.T) {
-	assert.Nil(t, translateGormJobError(nil))
+	assert.Nil(t, translateJobError(nil))
-	assert.Equal(t, ErrJobNotFound, translateGormJobError(sql.ErrNoRows))
+	assert.Equal(t, ErrJobNotFound, translateJobError(sql.ErrNoRows))
 
 	otherError := errors.New("this error is not special for this function")
-	assert.Equal(t, otherError, translateGormJobError(otherError))
+	assert.Equal(t, otherError, translateJobError(otherError))
 }
 
-func TestTranslateGormTaskError(t *testing.T) {
+func TestTranslateTaskError(t *testing.T) {
-	assert.Nil(t, translateGormTaskError(nil))
+	assert.Nil(t, translateTaskError(nil))
-	assert.Equal(t, ErrTaskNotFound, translateGormTaskError(sql.ErrNoRows))
+	assert.Equal(t, ErrTaskNotFound, translateTaskError(sql.ErrNoRows))
 
 	otherError := errors.New("this error is not special for this function")
-	assert.Equal(t, otherError, translateGormTaskError(otherError))
+	assert.Equal(t, otherError, translateTaskError(otherError))
 }

internal/manager/persistence/jobs.go

@@ -161,7 +161,7 @@ func (db *DB) StoreAuthoredJob(ctx context.Context, authoredJob job_compilers.Au
 		Name:                    authoredJob.Name,
 		JobType:                 authoredJob.JobType,
 		Priority:                int64(authoredJob.Priority),
-		Status:                  string(authoredJob.Status),
+		Status:                  authoredJob.Status,
 		Settings:                settings,
 		Metadata:                metadata,
 		StorageShamanCheckoutID: authoredJob.Storage.ShamanCheckoutID,
@@ -182,7 +182,7 @@ func (db *DB) StoreAuthoredJob(ctx context.Context, authoredJob job_compilers.Au
 		Str("job", params.UUID).
 		Str("type", params.JobType).
 		Str("name", params.Name).
-		Str("status", params.Status).
+		Str("status", string(params.Status)).
 		Msg("persistence: storing authored job")
 
 	jobID, err := qtx.queries.CreateJob(ctx, params)
@@ -261,7 +261,7 @@ func (db *DB) storeAuthoredJobTaks(
 			JobID:      jobID,
 			IndexInJob: int64(taskIndex + 1), // indexInJob is base-1.
 			Priority:   int64(authoredTask.Priority),
-			Status:     string(api.TaskStatusQueued),
+			Status:     api.TaskStatusQueued,
 			Commands:   commandsJSON,
 			// dependencies are stored below.
 		}
@@ -492,12 +492,7 @@ func (db *DB) FetchJobsDeletionRequested(ctx context.Context) ([]string, error)
 func (db *DB) FetchJobsInStatus(ctx context.Context, jobStatuses ...api.JobStatus) ([]*Job, error) {
 	queries := db.queries()
 
-	statuses := []string{}
+	sqlcJobs, err := queries.FetchJobsInStatus(ctx, jobStatuses)
-	for _, status := range jobStatuses {
-		statuses = append(statuses, string(status))
-	}
-
-	sqlcJobs, err := queries.FetchJobsInStatus(ctx, statuses)
 	if err != nil {
 		return nil, jobError(err, "fetching jobs in status %q", jobStatuses)
 	}
@@ -521,7 +516,7 @@ func (db *DB) SaveJobStatus(ctx context.Context, j *Job) error {
 	params := sqlc.SaveJobStatusParams{
 		Now:      db.nowNullable(),
 		ID:       int64(j.ID),
-		Status:   string(j.Status),
+		Status:   j.Status,
 		Activity: j.Activity,
 	}
 
@@ -586,8 +581,9 @@ func convertSqlTaskWithJobAndWorker(
 	task sqlc.Task,
 ) (*Task, error) {
 	var (
-		gormJob    Job
+		gormJob Job
-		gormWorker Worker
+		worker  Worker
+		err     error
 	)
 
 	// Fetch & convert the Job.
@@ -603,17 +599,16 @@ func convertSqlTaskWithJobAndWorker(
 		}
 	}
 
-	// Fetch & convert the Worker.
+	// Fetch the Worker.
 	if task.WorkerID.Valid && task.WorkerID.Int64 > 0 {
-		sqlcWorker, err := queries.FetchWorkerUnconditionalByID(ctx, task.WorkerID.Int64)
+		worker, err = queries.FetchWorkerUnconditionalByID(ctx, task.WorkerID.Int64)
 		if err != nil {
 			return nil, taskError(err, "fetching worker assigned to task %s", task.UUID)
 		}
-		gormWorker = *convertSqlcWorker(sqlcWorker)
 	}
 
 	// Convert the Task.
-	gormTask, err := convertSqlcTask(task, gormJob.UUID, gormWorker.UUID)
+	gormTask, err := convertSqlcTask(task, gormJob.UUID, worker.UUID)
 	if err != nil {
 		return nil, err
 	}
@@ -623,9 +618,9 @@ func convertSqlTaskWithJobAndWorker(
 		gormTask.Job = &gormJob
 		gormTask.JobUUID = gormJob.UUID
 	}
-	if gormWorker.ID > 0 {
+	if worker.ID > 0 {
-		gormTask.Worker = &gormWorker
+		gormTask.Worker = &worker
-		gormTask.WorkerUUID = gormWorker.UUID
+		gormTask.WorkerUUID = worker.UUID
 	}
 
 	return gormTask, nil
@@ -664,7 +659,7 @@ func (db *DB) SaveTask(ctx context.Context, t *Task) error {
 		Name:      t.Name,
 		Type:      t.Type,
 		Priority:  int64(t.Priority),
-		Status:    string(t.Status),
+		Status:    t.Status,
 		Commands:  commandsJSON,
 		Activity:  t.Activity,
 		ID:        int64(t.ID),
@@ -700,7 +695,7 @@ func (db *DB) SaveTaskStatus(ctx context.Context, t *Task) error {
 
 	err := queries.UpdateTaskStatus(ctx, sqlc.UpdateTaskStatusParams{
 		UpdatedAt: db.nowNullable(),
-		Status:    string(t.Status),
+		Status:    t.Status,
 		ID:        int64(t.ID),
 	})
 	if err != nil {
@@ -743,7 +738,7 @@ func (db *DB) TaskAssignToWorker(ctx context.Context, t *Task, w *Worker) error
 
 	// Update the task itself.
 	t.Worker = w
-	t.WorkerID = &w.ID
+	t.WorkerID = ptr(uint(w.ID))
 
 	return nil
 }
@@ -756,7 +751,7 @@ func (db *DB) FetchTasksOfWorkerInStatus(ctx context.Context, worker *Worker, ta
 			Int64: int64(worker.ID),
 			Valid: true,
 		},
-		TaskStatus: string(taskStatus),
+		TaskStatus: taskStatus,
 	})
 	if err != nil {
 		return nil, taskError(err, "finding tasks of worker %s in status %q", worker.UUID, taskStatus)
@@ -772,7 +767,7 @@ func (db *DB) FetchTasksOfWorkerInStatus(ctx context.Context, worker *Worker, ta
 			return nil, err
 		}
 		gormTask.Worker = worker
-		gormTask.WorkerID = &worker.ID
+		gormTask.WorkerID = ptr(uint(worker.ID))
 
 		// Fetch the job, either from the cache or from the database. This is done
 		// here because the task_state_machine functionality expects that task.Job
@@ -802,7 +797,7 @@ func (db *DB) FetchTasksOfWorkerInStatusOfJob(ctx context.Context, worker *Worke
 			Valid: true,
 		},
 		JobID:      int64(job.ID),
-		TaskStatus: string(taskStatus),
+		TaskStatus: taskStatus,
 	})
 	if err != nil {
 		return nil, taskError(err, "finding tasks of worker %s in status %q and job %s", worker.UUID, taskStatus, job.UUID)
@@ -817,7 +812,7 @@ func (db *DB) FetchTasksOfWorkerInStatusOfJob(ctx context.Context, worker *Worke
 		gormTask.Job = job
 		gormTask.JobID = job.ID
 		gormTask.Worker = worker
-		gormTask.WorkerID = &worker.ID
+		gormTask.WorkerID = ptr(uint(worker.ID))
 		result[i] = gormTask
 	}
 	return result, nil
@@ -828,7 +823,7 @@ func (db *DB) JobHasTasksInStatus(ctx context.Context, job *Job, taskStatus api.
 
 	count, err := queries.JobCountTasksInStatus(ctx, sqlc.JobCountTasksInStatusParams{
 		JobID:      int64(job.ID),
-		TaskStatus: string(taskStatus),
+		TaskStatus: taskStatus,
 	})
 	if err != nil {
 		return false, taskError(err, "counting tasks of job %s in status %q", job.UUID, taskStatus)
@@ -896,7 +891,7 @@ func (db *DB) FetchTasksOfJobInStatus(ctx context.Context, job *Job, taskStatuse
 
 	rows, err := queries.FetchTasksOfJobInStatus(ctx, sqlc.FetchTasksOfJobInStatusParams{
 		JobID:      int64(job.ID),
-		TaskStatus: convertTaskStatuses(taskStatuses),
+		TaskStatus: taskStatuses,
 	})
 	if err != nil {
 		return nil, taskError(err, "fetching tasks of job %s in status %q", job.UUID, taskStatuses)
@@ -926,7 +921,7 @@ func (db *DB) UpdateJobsTaskStatuses(ctx context.Context, job *Job,
 
 	err := queries.UpdateJobsTaskStatuses(ctx, sqlc.UpdateJobsTaskStatusesParams{
 		UpdatedAt: db.nowNullable(),
-		Status:    string(taskStatus),
+		Status:    taskStatus,
 		Activity:  activity,
 		JobID:     int64(job.ID),
 	})
@@ -950,10 +945,10 @@ func (db *DB) UpdateJobsTaskStatusesConditional(ctx context.Context, job *Job,
 
 	err := queries.UpdateJobsTaskStatusesConditional(ctx, sqlc.UpdateJobsTaskStatusesConditionalParams{
 		UpdatedAt:        db.nowNullable(),
-		Status:           string(taskStatus),
+		Status:           taskStatus,
 		Activity:         activity,
 		JobID:            int64(job.ID),
-		StatusesToUpdate: convertTaskStatuses(statusesToUpdate),
+		StatusesToUpdate: statusesToUpdate,
 	})
 
 	if err != nil {
@@ -1041,7 +1036,7 @@ func (db *DB) FetchTaskFailureList(ctx context.Context, t *Task) ([]*Worker, err
 
 	workers := make([]*Worker, len(failureList))
 	for idx := range failureList {
-		workers[idx] = convertSqlcWorker(failureList[idx].Worker)
+		workers[idx] = &failureList[idx].Worker
 	}
 	return workers, nil
 }
@@ -1124,21 +1119,3 @@ func convertSqlcTask(task sqlc.Task, jobUUID string, workerUUID string) (*Task,
 
 	return &dbTask, nil
 }
-
-// convertTaskStatuses converts from []api.TaskStatus to []string for feeding to sqlc.
-func convertTaskStatuses(taskStatuses []api.TaskStatus) []string {
-	statusesAsStrings := make([]string, len(taskStatuses))
-	for index := range taskStatuses {
-		statusesAsStrings[index] = string(taskStatuses[index])
-	}
-	return statusesAsStrings
-}
-
-// convertJobStatuses converts from []api.JobStatus to []string for feeding to sqlc.
-func convertJobStatuses(jobStatuses []api.JobStatus) []string {
-	statusesAsStrings := make([]string, len(jobStatuses))
-	for index := range jobStatuses {
-		statusesAsStrings[index] = string(jobStatuses[index])
-	}
-	return statusesAsStrings
-}

internal/manager/persistence/jobs_blocklist_test.go

@@ -119,7 +119,9 @@ func TestWorkersLeftToRun(t *testing.T) {
 	require.NoError(t, err)
 	assert.Empty(t, left)
 
-	worker1 := createWorker(ctx, t, db)
+	worker1 := createWorker(ctx, t, db, func(w *Worker) {
+		w.UUID = "11111111-0000-1111-2222-333333333333"
+	})
 	worker2 := createWorkerFrom(ctx, t, db, *worker1)
 
 	// Create one worker tag. It will not be used by this job, but one of the
@@ -129,8 +131,8 @@ func TestWorkersLeftToRun(t *testing.T) {
 	require.NoError(t, db.CreateWorkerTag(ctx, &tag1))
 	workerC1 := createWorker(ctx, t, db, func(w *Worker) {
 		w.UUID = "c1c1c1c1-0000-1111-2222-333333333333"
-		w.Tags = []*WorkerTag{&tag1}
 	})
+	require.NoError(t, db.WorkerSetTags(ctx, workerC1, []string{tag1.UUID}))
 
 	uuidMap := func(workers ...*Worker) map[string]bool {
 		theMap := map[string]bool{}
@@ -185,23 +187,25 @@ func TestWorkersLeftToRunWithTags(t *testing.T) {
 	// Tags 1 + 3
 	workerC13 := createWorker(ctx, t, db, func(w *Worker) {
 		w.UUID = "c13c1313-0000-1111-2222-333333333333"
-		w.Tags = []*WorkerTag{&tag1, &tag3}
 	})
+	require.NoError(t, db.WorkerSetTags(ctx, workerC13, []string{tag1.UUID, tag3.UUID}))
+
 	// Tag 1
 	workerC1 := createWorker(ctx, t, db, func(w *Worker) {
 		w.UUID = "c1c1c1c1-0000-1111-2222-333333333333"
-		w.Tags = []*WorkerTag{&tag1}
 	})
+	require.NoError(t, db.WorkerSetTags(ctx, workerC1, []string{tag1.UUID}))
+
 	// Tag 2 worker, this one should never appear.
-	createWorker(ctx, t, db, func(w *Worker) {
+	workerC2 := createWorker(ctx, t, db, func(w *Worker) {
 		w.UUID = "c2c2c2c2-0000-1111-2222-333333333333"
-		w.Tags = []*WorkerTag{&tag2}
 	})
+	require.NoError(t, db.WorkerSetTags(ctx, workerC2, []string{tag2.UUID}))
+
 	// No tags, so should be able to run only tagless jobs. Which is none
 	// in this test.
 	createWorker(ctx, t, db, func(w *Worker) {
 		w.UUID = "00000000-0000-1111-2222-333333333333"
-		w.Tags = nil
 	})
 
 	uuidMap := func(workers ...*Worker) map[string]bool {

internal/manager/persistence/jobs_test.go

@@ -14,6 +14,7 @@ import (
 	"golang.org/x/net/context"
 
 	"projects.blender.org/studio/flamenco/internal/manager/job_compilers"
+	"projects.blender.org/studio/flamenco/internal/manager/persistence/sqlc"
 	"projects.blender.org/studio/flamenco/internal/uuid"
 	"projects.blender.org/studio/flamenco/pkg/api"
 )
@@ -581,7 +582,7 @@ func TestTaskAssignToWorker(t *testing.T) {
 	if task.WorkerID == nil {
 		t.Error("task.WorkerID == nil")
 	} else {
-		assert.Equal(t, w.ID, *task.WorkerID)
+		assert.Equal(t, w.ID, int64(*task.WorkerID))
 	}
 }
 
@@ -713,7 +714,7 @@ func TestAddWorkerToTaskFailedList(t *testing.T) {
 	newWorker.ID = 0
 	newWorker.UUID = "89ed2b02-b51b-4cd4-b44a-4a1c8d01db85"
 	newWorker.Name = "Worker 2"
-	require.NoError(t, db.SaveWorker(ctx, &newWorker))
+	require.NoError(t, db.CreateWorker(ctx, &newWorker))
 	worker2, err := db.FetchWorker(ctx, newWorker.UUID)
 	require.NoError(t, err)
 
@@ -752,7 +753,7 @@ func TestClearFailureListOfTask(t *testing.T) {
 	newWorker.ID = 0
 	newWorker.UUID = "89ed2b02-b51b-4cd4-b44a-4a1c8d01db85"
 	newWorker.Name = "Worker 2"
-	require.NoError(t, db.SaveWorker(ctx, &newWorker))
+	require.NoError(t, db.CreateWorker(ctx, &newWorker))
 	worker2, err := db.FetchWorker(ctx, newWorker.UUID)
 	require.NoError(t, err)
 
@@ -1020,7 +1021,6 @@ func createWorker(ctx context.Context, t *testing.T, db *DB, updaters ...func(*W
 		Software:           "3.0",
 		Status:             api.WorkerStatusAwake,
 		SupportedTaskTypes: "blender,ffmpeg,file-management",
-		Tags:               nil,
 	}
 
 	for _, updater := range updaters {
@@ -1039,14 +1039,26 @@ func createWorker(ctx context.Context, t *testing.T, db *DB, updaters ...func(*W
 
 // createWorkerFrom duplicates the given worker, ensuring new UUIDs.
 func createWorkerFrom(ctx context.Context, t *testing.T, db *DB, worker Worker) *Worker {
-	worker.ID = 0
+	newWorker := sqlc.Worker{
-	worker.UUID = uuid.New()
+		UUID:               uuid.New(),
-	worker.Name += " (copy)"
+		Secret:             worker.Secret,
+		Name:               worker.Name + " (copy)",
+		Address:            worker.Address,
+		Platform:           worker.Platform,
+		Software:           worker.Software,
+		Status:             worker.Status,
+		LastSeenAt:         nullTimeToUTC(worker.LastSeenAt),
+		StatusRequested:    worker.StatusRequested,
+		LazyStatusRequest:  worker.LazyStatusRequest,
+		SupportedTaskTypes: worker.SupportedTaskTypes,
+		DeletedAt:          worker.DeletedAt,
+		CanRestart:         worker.CanRestart,
+	}
 
-	err := db.SaveWorker(ctx, &worker)
+	err := db.CreateWorker(ctx, &newWorker)
 	require.NoError(t, err)
 
-	dbWorker, err := db.FetchWorker(ctx, worker.UUID)
+	dbWorker, err := db.FetchWorker(ctx, newWorker.UUID)
 	require.NoError(t, err)
 
 	return dbWorker

internal/manager/persistence/sqlc/methods.go

@@ -0,0 +1,41 @@
+// Code MANUALLY written to extend the SQLC structs with some extra methods.
+
+package sqlc
+
+import (
+	"fmt"
+	"strings"
+
+	"projects.blender.org/studio/flamenco/pkg/api"
+)
+
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+func (w *Worker) Identifier() string {
+	// Avoid a panic when worker.Identifier() is called on a nil pointer.
+	if w == nil {
+		return "-nil worker-"
+	}
+	return fmt.Sprintf("%s (%s)", w.Name, w.UUID)
+}
+
+// TaskTypes returns the worker's supported task types as list of strings.
+func (w *Worker) TaskTypes() []string {
+	return strings.Split(w.SupportedTaskTypes, ",")
+}
+
+// StatusChangeRequest stores a requested status change on the Worker.
+// This just updates the Worker instance, but doesn't store the change in the
+// database.
+func (w *Worker) StatusChangeRequest(status api.WorkerStatus, isLazyRequest bool) {
+	w.StatusRequested = status
+	w.LazyStatusRequest = isLazyRequest
+}
+
+// StatusChangeClear clears the requested status change of the Worker.
+// This just updates the Worker instance, but doesn't store the change in the
+// database.
+func (w *Worker) StatusChangeClear() {
+	w.StatusRequested = ""
+	w.LazyStatusRequest = false
+}

internal/manager/persistence/sqlc/models.go

@@ -8,6 +8,8 @@ import (
 	"database/sql"
 	"encoding/json"
 	"time"
+
+	"projects.blender.org/studio/flamenco/pkg/api"
 )
 
 type Job struct {
@@ -18,7 +20,7 @@ type Job struct {
 	Name                    string
 	JobType                 string
 	Priority                int64
-	Status                  string
+	Status                  api.JobStatus
 	Activity                string
 	Settings                json.RawMessage
 	Metadata                json.RawMessage
@@ -64,7 +66,7 @@ type Task struct {
 	JobID         int64
 	IndexInJob    int64
 	Priority      int64
-	Status        string
+	Status        api.TaskStatus
 	WorkerID      sql.NullInt64
 	LastTouchedAt sql.NullTime
 	Commands      json.RawMessage
@@ -92,9 +94,9 @@ type Worker struct {
 	Address            string
 	Platform           string
 	Software           string
-	Status             string
+	Status             api.WorkerStatus
 	LastSeenAt         sql.NullTime
-	StatusRequested    string
+	StatusRequested    api.WorkerStatus
 	LazyStatusRequest  bool
 	SupportedTaskTypes string
 	DeletedAt          sql.NullTime

internal/manager/persistence/sqlc/query_jobs.sql.go

@@ -11,6 +11,8 @@ import (
 	"encoding/json"
 	"strings"
 	"time"
+
+	"projects.blender.org/studio/flamenco/pkg/api"
 )
 
 const addWorkerToJobBlocklist = `-- name: AddWorkerToJobBlocklist :exec
@@ -156,7 +158,7 @@ type CreateJobParams struct {
 	Name                    string
 	JobType                 string
 	Priority                int64
-	Status                  string
+	Status                  api.JobStatus
 	Activity                string
 	Settings                json.RawMessage
 	Metadata                json.RawMessage
@@ -218,7 +220,7 @@ type CreateTaskParams struct {
 	JobID      int64
 	IndexInJob int64
 	Priority   int64
-	Status     string
+	Status     api.TaskStatus
 	Commands   json.RawMessage
 }
 
@@ -464,7 +466,7 @@ const fetchJobsInStatus = `-- name: FetchJobsInStatus :many
 SELECT id, created_at, updated_at, uuid, name, job_type, priority, status, activity, settings, metadata, delete_requested_at, storage_shaman_checkout_id, worker_tag_id FROM jobs WHERE status IN (/*SLICE:statuses*/?)
 `
 
-func (q *Queries) FetchJobsInStatus(ctx context.Context, statuses []string) ([]Job, error) {
+func (q *Queries) FetchJobsInStatus(ctx context.Context, statuses []api.JobStatus) ([]Job, error) {
 	query := fetchJobsInStatus
 	var queryParams []interface{}
 	if len(statuses) > 0 {
@@ -675,7 +677,7 @@ WHERE tasks.job_id = ?1
 
 type FetchTasksOfJobInStatusParams struct {
 	JobID      int64
-	TaskStatus []string
+	TaskStatus []api.TaskStatus
 }
 
 type FetchTasksOfJobInStatusRow struct {
@@ -743,7 +745,7 @@ WHERE tasks.worker_id = ?1
 
 type FetchTasksOfWorkerInStatusParams struct {
 	WorkerID   sql.NullInt64
-	TaskStatus string
+	TaskStatus api.TaskStatus
 }
 
 type FetchTasksOfWorkerInStatusRow struct {
@@ -801,7 +803,7 @@ WHERE tasks.worker_id = ?1
 type FetchTasksOfWorkerInStatusOfJobParams struct {
 	WorkerID   sql.NullInt64
 	JobID      int64
-	TaskStatus string
+	TaskStatus api.TaskStatus
 }
 
 type FetchTasksOfWorkerInStatusOfJobRow struct {
@@ -855,7 +857,7 @@ AND last_touched_at <= ?2
 `
 
 type FetchTimedOutTasksParams struct {
-	TaskStatus     string
+	TaskStatus     api.TaskStatus
 	UntouchedSince sql.NullTime
 }
 
@@ -916,7 +918,7 @@ GROUP BY status
 `
 
 type JobCountTaskStatusesRow struct {
-	Status   string
+	Status   api.TaskStatus
 	NumTasks int64
 }
 
@@ -951,7 +953,7 @@ WHERE job_id = ?1 AND status = ?2
 
 type JobCountTasksInStatusParams struct {
 	JobID      int64
-	TaskStatus string
+	TaskStatus api.TaskStatus
 }
 
 // Fetch number of tasks in the given status, of the given job.
@@ -975,7 +977,7 @@ type QueryJobTaskSummariesRow struct {
 	Name       string
 	IndexInJob int64
 	Priority   int64
-	Status     string
+	Status     api.TaskStatus
 	Type       string
 	UpdatedAt  sql.NullTime
 }
@@ -1097,7 +1099,7 @@ UPDATE jobs SET updated_at=?1, status=?2, activity=?3 WHERE id=?4
 
 type SaveJobStatusParams struct {
 	Now      sql.NullTime
-	Status   string
+	Status   api.JobStatus
 	Activity string
 	ID       int64
 }
@@ -1170,7 +1172,7 @@ GROUP BY status
 `
 
 type SummarizeJobStatusesRow struct {
-	Status      string
+	Status      api.JobStatus
 	StatusCount int64
 }
 
@@ -1375,7 +1377,7 @@ WHERE job_id = ?4
 
 type UpdateJobsTaskStatusesParams struct {
 	UpdatedAt sql.NullTime
-	Status    string
+	Status    api.TaskStatus
 	Activity  string
 	JobID     int64
 }
@@ -1400,10 +1402,10 @@ WHERE job_id = ?4 AND status in (/*SLICE:statuses_to_update*/?)
 
 type UpdateJobsTaskStatusesConditionalParams struct {
 	UpdatedAt        sql.NullTime
-	Status           string
+	Status           api.TaskStatus
 	Activity         string
 	JobID            int64
-	StatusesToUpdate []string
+	StatusesToUpdate []api.TaskStatus
 }
 
 func (q *Queries) UpdateJobsTaskStatusesConditional(ctx context.Context, arg UpdateJobsTaskStatusesConditionalParams) error {
@@ -1444,7 +1446,7 @@ type UpdateTaskParams struct {
 	Name          string
 	Type          string
 	Priority      int64
-	Status        string
+	Status        api.TaskStatus
 	WorkerID      sql.NullInt64
 	LastTouchedAt sql.NullTime
 	Commands      json.RawMessage
@@ -1496,7 +1498,7 @@ WHERE id=?3
 
 type UpdateTaskStatusParams struct {
 	UpdatedAt sql.NullTime
-	Status    string
+	Status    api.TaskStatus
 	ID        int64
 }
 

internal/manager/persistence/sqlc/query_task_scheduler.sql.go

@@ -9,6 +9,8 @@ import (
 	"context"
 	"database/sql"
 	"strings"
+
+	"projects.blender.org/studio/flamenco/pkg/api"
 )
 
 const assignTaskToWorker = `-- name: AssignTaskToWorker :exec
@@ -39,9 +41,9 @@ LIMIT 1
 `
 
 type FetchAssignedAndRunnableTaskOfWorkerParams struct {
-	ActiveTaskStatus  string
+	ActiveTaskStatus  api.TaskStatus
 	WorkerID          sql.NullInt64
-	ActiveJobStatuses []string
+	ActiveJobStatuses []api.JobStatus
 }
 
 type FetchAssignedAndRunnableTaskOfWorkerRow struct {
@@ -99,8 +101,8 @@ LIMIT 1
 `
 
 type FetchWorkerTaskParams struct {
-	TaskStatusActive string
+	TaskStatusActive api.TaskStatus
-	JobStatusActive  string
+	JobStatusActive  api.JobStatus
 	WorkerID         sql.NullInt64
 }
 
@@ -179,10 +181,10 @@ ORDER BY jobs.priority DESC, tasks.priority DESC
 
 type FindRunnableTaskParams struct {
 	WorkerID                int64
-	TaskStatusCompleted     string
+	TaskStatusCompleted     api.TaskStatus
 	WorkerTags              []sql.NullInt64
-	SchedulableTaskStatuses []string
+	SchedulableTaskStatuses []api.TaskStatus
-	SchedulableJobStatuses  []string
+	SchedulableJobStatuses  []api.JobStatus
 	SupportedTaskTypes      []string
 }
 

internal/manager/persistence/sqlc/query_workers.sql

@@ -43,7 +43,7 @@ FROM worker_tag_membership
 WHERE worker_id=@worker_id;
 
 -- name: FetchWorkers :many
-SELECT sqlc.embed(workers) FROM workers
+SELECT * FROM workers
 WHERE deleted_at IS NULL;
 
 -- name: FetchWorker :one

internal/manager/persistence/sqlc/query_workers.sql.go

@@ -10,6 +10,8 @@ import (
 	"database/sql"
 	"strings"
 	"time"
+
+	"projects.blender.org/studio/flamenco/pkg/api"
 )
 
 const countWorkerTags = `-- name: CountWorkerTags :one
@@ -66,9 +68,9 @@ type CreateWorkerParams struct {
 	Address            string
 	Platform           string
 	Software           string
-	Status             string
+	Status             api.WorkerStatus
 	LastSeenAt         sql.NullTime
-	StatusRequested    string
+	StatusRequested    api.WorkerStatus
 	LazyStatusRequest  bool
 	SupportedTaskTypes string
 	DeletedAt          sql.NullTime
@@ -232,7 +234,7 @@ AND status NOT IN (/*SLICE:worker_statuses_no_timeout*/?)
 
 type FetchTimedOutWorkersParams struct {
 	LastSeenBefore          sql.NullTime
-	WorkerStatusesNoTimeout []string
+	WorkerStatusesNoTimeout []api.WorkerStatus
 }
 
 func (q *Queries) FetchTimedOutWorkers(ctx context.Context, arg FetchTimedOutWorkersParams) ([]Worker, error) {
@@ -548,40 +550,36 @@ func (q *Queries) FetchWorkerUnconditionalByID(ctx context.Context, workerID int
 }
 
 const fetchWorkers = `-- name: FetchWorkers :many
-SELECT workers.id, workers.created_at, workers.updated_at, workers.uuid, workers.secret, workers.name, workers.address, workers.platform, workers.software, workers.status, workers.last_seen_at, workers.status_requested, workers.lazy_status_request, workers.supported_task_types, workers.deleted_at, workers.can_restart FROM workers
+SELECT id, created_at, updated_at, uuid, secret, name, address, platform, software, status, last_seen_at, status_requested, lazy_status_request, supported_task_types, deleted_at, can_restart FROM workers
 WHERE deleted_at IS NULL
 `
 
-type FetchWorkersRow struct {
+func (q *Queries) FetchWorkers(ctx context.Context) ([]Worker, error) {
-	Worker Worker
-}
-
-func (q *Queries) FetchWorkers(ctx context.Context) ([]FetchWorkersRow, error) {
 	rows, err := q.db.QueryContext(ctx, fetchWorkers)
 	if err != nil {
 		return nil, err
 	}
 	defer rows.Close()
-	var items []FetchWorkersRow
+	var items []Worker
 	for rows.Next() {
-		var i FetchWorkersRow
+		var i Worker
 		if err := rows.Scan(
-			&i.Worker.ID,
+			&i.ID,
-			&i.Worker.CreatedAt,
+			&i.CreatedAt,
-			&i.Worker.UpdatedAt,
+			&i.UpdatedAt,
-			&i.Worker.UUID,
+			&i.UUID,
-			&i.Worker.Secret,
+			&i.Secret,
-			&i.Worker.Name,
+			&i.Name,
-			&i.Worker.Address,
+			&i.Address,
-			&i.Worker.Platform,
+			&i.Platform,
-			&i.Worker.Software,
+			&i.Software,
-			&i.Worker.Status,
+			&i.Status,
-			&i.Worker.LastSeenAt,
+			&i.LastSeenAt,
-			&i.Worker.StatusRequested,
+			&i.StatusRequested,
-			&i.Worker.LazyStatusRequest,
+			&i.LazyStatusRequest,
-			&i.Worker.SupportedTaskTypes,
+			&i.SupportedTaskTypes,
-			&i.Worker.DeletedAt,
+			&i.DeletedAt,
-			&i.Worker.CanRestart,
+			&i.CanRestart,
 		); err != nil {
 			return nil, err
 		}
@@ -622,9 +620,9 @@ type SaveWorkerParams struct {
 	Address            string
 	Platform           string
 	Software           string
-	Status             string
+	Status             api.WorkerStatus
 	LastSeenAt         sql.NullTime
-	StatusRequested    string
+	StatusRequested    api.WorkerStatus
 	LazyStatusRequest  bool
 	SupportedTaskTypes string
 	CanRestart         bool
@@ -662,8 +660,8 @@ WHERE id=?5
 
 type SaveWorkerStatusParams struct {
 	UpdatedAt         sql.NullTime
-	Status            string
+	Status            api.WorkerStatus
-	StatusRequested   string
+	StatusRequested   api.WorkerStatus
 	LazyStatusRequest bool
 	ID                int64
 }
@@ -808,7 +806,7 @@ GROUP BY status
 `
 
 type SummarizeWorkerStatusesRow struct {
-	Status      string
+	Status      api.WorkerStatus
 	StatusCount int64
 }
 

internal/manager/persistence/task_scheduler.go

@@ -77,8 +77,8 @@ func (db *DB) scheduleTask(ctx context.Context, queries *sqlc.Queries, w *Worker
 	// Worker, but since it's active that is unlikely.
 	{
 		row, err := queries.FetchAssignedAndRunnableTaskOfWorker(ctx, sqlc.FetchAssignedAndRunnableTaskOfWorkerParams{
-			ActiveTaskStatus:  string(api.TaskStatusActive),
+			ActiveTaskStatus:  api.TaskStatusActive,
-			ActiveJobStatuses: convertJobStatuses(schedulableJobStatuses),
+			ActiveJobStatuses: schedulableJobStatuses,
 			WorkerID:          workerID,
 		})
 
@@ -141,18 +141,22 @@ func findTaskForWorker(
 	w *Worker,
 ) (sqlc.Task, error) {
 
-	// Construct the list of worker tags to check.
+	// Construct the list of worker tag IDs to check.
-	workerTags := make([]sql.NullInt64, len(w.Tags))
+	tags, err := queries.FetchTagsOfWorker(ctx, w.UUID)
-	for index, tag := range w.Tags {
+	if err != nil {
-		workerTags[index] = sql.NullInt64{Int64: int64(tag.ID), Valid: true}
+		return sqlc.Task{}, err
+	}
+	workerTags := make([]sql.NullInt64, len(tags))
+	for index, tag := range tags {
+		workerTags[index] = sql.NullInt64{Int64: tag.ID, Valid: true}
 	}
 
 	row, err := queries.FindRunnableTask(ctx, sqlc.FindRunnableTaskParams{
 		WorkerID:                int64(w.ID),
-		SchedulableTaskStatuses: convertTaskStatuses(schedulableTaskStatuses),
+		SchedulableTaskStatuses: schedulableTaskStatuses,
-		SchedulableJobStatuses:  convertJobStatuses(schedulableJobStatuses),
+		SchedulableJobStatuses:  schedulableJobStatuses,
 		SupportedTaskTypes:      w.TaskTypes(),
-		TaskStatusCompleted:     string(api.TaskStatusCompleted),
+		TaskStatusCompleted:     api.TaskStatusCompleted,
 		WorkerTags:              workerTags,
 	})
 	if err != nil {

internal/manager/persistence/task_scheduler_test.go

@@ -48,7 +48,7 @@ func TestOneJobOneTask(t *testing.T) {
 	require.NotNil(t, task)
 	assert.Equal(t, job.ID, task.JobID)
 	require.NotNil(t, task.WorkerID, "no worker assigned to returned task")
-	assert.Equal(t, w.ID, *task.WorkerID, "task must be assigned to the requesting worker")
+	assert.Equal(t, w.ID, int64(*task.WorkerID), "task must be assigned to the requesting worker")
 
 	// Check the task in the database.
 	now := db.now()
@@ -57,7 +57,7 @@ func TestOneJobOneTask(t *testing.T) {
 	require.NotNil(t, dbTask)
 	require.NotNil(t, dbTask.WorkerID, "no worker assigned to task in database")
 
-	assert.Equal(t, w.ID, *dbTask.WorkerID, "task must be assigned to the requesting worker")
+	assert.Equal(t, w.ID, int64(*dbTask.WorkerID), "task must be assigned to the requesting worker")
 	assert.WithinDuration(t, now, dbTask.LastTouchedAt, time.Second, "task must be 'touched' by the worker after scheduling")
 }
 
@@ -259,7 +259,7 @@ func TestAlreadyAssigned(t *testing.T) {
 	// another, higher-prio task to be done.
 	dbTask3, err := db.FetchTask(ctx, att3.UUID)
 	require.NoError(t, err)
-	dbTask3.WorkerID = &w.ID
+	dbTask3.WorkerID = ptr(uint(w.ID))
 	dbTask3.Status = api.TaskStatusActive
 	err = db.SaveTask(ctx, dbTask3)
 	require.NoError(t, err)
@@ -292,7 +292,7 @@ func TestAssignedToOtherWorker(t *testing.T) {
 	// it shouldn't matter which worker it's assigned to.
 	dbTask2, err := db.FetchTask(ctx, att2.UUID)
 	require.NoError(t, err)
-	dbTask2.WorkerID = &w2.ID
+	dbTask2.WorkerID = ptr(uint(w2.ID))
 	dbTask2.Status = api.TaskStatusQueued
 	err = db.SaveTask(ctx, dbTask2)
 	require.NoError(t, err)
@@ -302,7 +302,7 @@ func TestAssignedToOtherWorker(t *testing.T) {
 	require.NotNil(t, task)
 
 	assert.Equal(t, att2.Name, task.Name, "the high-prio task should have been chosen")
-	assert.Equal(t, *task.WorkerID, w.ID, "the task should now be assigned to the worker it was scheduled for")
+	assert.Equal(t, int64(*task.WorkerID), w.ID, "the task should now be assigned to the worker it was scheduled for")
 }
 
 func TestPreviouslyFailed(t *testing.T) {
@@ -344,14 +344,12 @@ func TestWorkerTagJobWithTag(t *testing.T) {
 	require.NoError(t, db.CreateWorkerTag(ctx, &tag2))
 
 	// Create a worker in tag1:
-	workerC := linuxWorker(t, db, func(w *Worker) {
+	workerC := linuxWorker(t, db)
-		w.Tags = []*WorkerTag{&tag1}
+	require.NoError(t, db.WorkerSetTags(ctx, &workerC, []string{tag1.UUID}))
-	})
 
 	// Create a worker without tag:
 	workerNC := linuxWorker(t, db, func(w *Worker) {
 		w.UUID = "c53f8f68-4149-4790-991c-ba73a326551e"
-		w.Tags = nil
 	})
 
 	{ // Test job with different tag:
@@ -391,14 +389,12 @@ func TestWorkerTagJobWithoutTag(t *testing.T) {
 	require.NoError(t, db.CreateWorkerTag(ctx, &tag1))
 
 	// Create a worker in tag1:
-	workerC := linuxWorker(t, db, func(w *Worker) {
+	workerC := linuxWorker(t, db)
-		w.Tags = []*WorkerTag{&tag1}
+	require.NoError(t, db.WorkerSetTags(ctx, &workerC, []string{tag1.UUID}))
-	})
 
 	// Create a worker without tag:
 	workerNC := linuxWorker(t, db, func(w *Worker) {
 		w.UUID = "c53f8f68-4149-4790-991c-ba73a326551e"
-		w.Tags = nil
 	})
 
 	// Test tag-less job:
@@ -537,9 +533,9 @@ func saveTestWorker(t *testing.T, db *DB, worker *Worker) {
 		Address:            worker.Address,
 		Platform:           worker.Platform,
 		Software:           worker.Software,
-		Status:             string(worker.Status),
+		Status:             worker.Status,
-		LastSeenAt:         sql.NullTime{Time: worker.LastSeenAt, Valid: !worker.LastSeenAt.IsZero()},
+		LastSeenAt:         nullTimeToUTC(worker.LastSeenAt),
-		StatusRequested:    string(worker.StatusRequested),
+		StatusRequested:    worker.StatusRequested,
 		LazyStatusRequest:  worker.LazyStatusRequest,
 		SupportedTaskTypes: worker.SupportedTaskTypes,
 		DeletedAt:          sql.NullTime(worker.DeletedAt),
@@ -550,5 +546,6 @@ func saveTestWorker(t *testing.T, db *DB, worker *Worker) {
 	id, err := queries.CreateWorker(context.TODO(), params)
 	require.NoError(t, err, "cannot save worker %q", worker.Name)
 
-	worker.ID = uint(id)
+	worker.ID = id
+	worker.CreatedAt = params.CreatedAt
 }

internal/manager/persistence/timeout.go

@@ -31,7 +31,7 @@ func (db *DB) FetchTimedOutTasks(ctx context.Context, untouchedSince time.Time)
 	queries := db.queries()
 
 	sqlcTasks, err := queries.FetchTimedOutTasks(ctx, sqlc.FetchTimedOutTasksParams{
-		TaskStatus:     string(api.TaskStatusActive),
+		TaskStatus:     api.TaskStatusActive,
 		UntouchedSince: sql.NullTime{Time: untouchedSince, Valid: true},
 	})
 
@@ -54,13 +54,8 @@ func (db *DB) FetchTimedOutTasks(ctx context.Context, untouchedSince time.Time)
 func (db *DB) FetchTimedOutWorkers(ctx context.Context, lastSeenBefore time.Time) ([]*Worker, error) {
 	queries := db.queries()
 
-	statuses := make([]string, len(workerStatusNoTimeout))
-	for i, status := range workerStatusNoTimeout {
-		statuses[i] = string(status)
-	}
-
 	sqlcWorkers, err := queries.FetchTimedOutWorkers(ctx, sqlc.FetchTimedOutWorkersParams{
-		WorkerStatusesNoTimeout: statuses,
+		WorkerStatusesNoTimeout: workerStatusNoTimeout,
 		LastSeenBefore: sql.NullTime{
 			Time:  lastSeenBefore.UTC(),
 			Valid: true},
@@ -71,7 +66,7 @@ func (db *DB) FetchTimedOutWorkers(ctx context.Context, lastSeenBefore time.Time
 
 	result := make([]*Worker, len(sqlcWorkers))
 	for index := range sqlcWorkers {
-		result[index] = convertSqlcWorker(sqlcWorkers[index])
+		result[index] = &sqlcWorkers[index]
 	}
 	return result, nil
 }

internal/manager/persistence/timeout_test.go

@@ -1,6 +1,7 @@
 package persistence
 
 import (
+	"database/sql"
 	"testing"
 	"time"
 
@@ -55,8 +56,8 @@ func TestFetchTimedOutWorkers(t *testing.T) {
 	defer cancel()
 
 	timeoutDeadline := mustParseTime("2022-06-07T11:14:47+02:00")
-	beforeDeadline := timeoutDeadline.Add(-10 * time.Second)
+	beforeDeadline := sql.NullTime{Time: timeoutDeadline.Add(-10 * time.Second), Valid: true}
-	afterDeadline := timeoutDeadline.Add(10 * time.Second)
+	afterDeadline := sql.NullTime{Time: timeoutDeadline.Add(10 * time.Second), Valid: true}
 
 	worker0 := Worker{ // Offline, so should not time out.
 		UUID:       "c7b4d1d5-0a96-4e19-993f-028786d3d2c1",

internal/manager/persistence/worker_sleep_schedule.go

@@ -60,7 +60,7 @@ func (db *DB) SetWorkerSleepSchedule(ctx context.Context, workerUUID string, sch
 	if err != nil {
 		return fmt.Errorf("fetching worker %q: %w", workerUUID, err)
 	}
-	schedule.WorkerID = worker.ID
+	schedule.WorkerID = uint(worker.ID)
 	schedule.Worker = worker
 
 	// Only store timestamps in UTC.
@@ -120,7 +120,7 @@ func (db *DB) FetchSleepScheduleWorker(ctx context.Context, schedule *SleepSched
 		return workerError(err, "finding worker by their sleep schedule")
 	}
 
-	schedule.Worker = convertSqlcWorker(worker)
+	schedule.Worker = &worker
 	return nil
 }
 

internal/manager/persistence/worker_sleep_schedule_test.go

@@ -40,7 +40,7 @@ func TestFetchWorkerSleepSchedule(t *testing.T) {
 
 	// Create a sleep schedule.
 	created := SleepSchedule{
-		WorkerID: linuxWorker.ID,
+		WorkerID: uint(linuxWorker.ID),
 		Worker:   &linuxWorker,
 
 		IsActive:   true,
@@ -53,7 +53,7 @@ func TestFetchWorkerSleepSchedule(t *testing.T) {
 
 	fetched, err = db.FetchWorkerSleepSchedule(ctx, linuxWorker.UUID)
 	require.NoError(t, err)
-	assertEqualSleepSchedule(t, linuxWorker.ID, created, *fetched)
+	assertEqualSleepSchedule(t, uint(linuxWorker.ID), created, *fetched)
 }
 
 func TestFetchSleepScheduleWorker(t *testing.T) {
@@ -74,7 +74,7 @@ func TestFetchSleepScheduleWorker(t *testing.T) {
 
 	// Create a sleep schedule.
 	created := SleepSchedule{
-		WorkerID: linuxWorker.ID,
+		WorkerID: uint(linuxWorker.ID),
 		Worker:   &linuxWorker,
 
 		IsActive:   true,
@@ -120,7 +120,7 @@ func TestSetWorkerSleepSchedule(t *testing.T) {
 	require.NoError(t, err)
 
 	schedule := SleepSchedule{
-		WorkerID: linuxWorker.ID,
+		WorkerID: uint(linuxWorker.ID),
 		Worker:   &linuxWorker,
 
 		IsActive:   true,
@@ -138,7 +138,7 @@ func TestSetWorkerSleepSchedule(t *testing.T) {
 	require.NoError(t, err)
 	fetched, err := db.FetchWorkerSleepSchedule(ctx, linuxWorker.UUID)
 	require.NoError(t, err)
-	assertEqualSleepSchedule(t, linuxWorker.ID, schedule, *fetched)
+	assertEqualSleepSchedule(t, uint(linuxWorker.ID), schedule, *fetched)
 
 	// Overwrite the schedule with one that already has a database ID.
 	newSchedule := schedule
@@ -150,11 +150,11 @@ func TestSetWorkerSleepSchedule(t *testing.T) {
 	require.NoError(t, err)
 	fetched, err = db.FetchWorkerSleepSchedule(ctx, linuxWorker.UUID)
 	require.NoError(t, err)
-	assertEqualSleepSchedule(t, linuxWorker.ID, newSchedule, *fetched)
+	assertEqualSleepSchedule(t, uint(linuxWorker.ID), newSchedule, *fetched)
 
 	// Overwrite the schedule with a freshly constructed one.
 	newerSchedule := SleepSchedule{
-		WorkerID: linuxWorker.ID,
+		WorkerID: uint(linuxWorker.ID),
 		Worker:   &linuxWorker,
 
 		IsActive:   true,
@@ -166,11 +166,11 @@ func TestSetWorkerSleepSchedule(t *testing.T) {
 	require.NoError(t, err)
 	fetched, err = db.FetchWorkerSleepSchedule(ctx, linuxWorker.UUID)
 	require.NoError(t, err)
-	assertEqualSleepSchedule(t, linuxWorker.ID, newerSchedule, *fetched)
+	assertEqualSleepSchedule(t, uint(linuxWorker.ID), newerSchedule, *fetched)
 
 	// Clear the sleep schedule.
 	emptySchedule := SleepSchedule{
-		WorkerID: linuxWorker.ID,
+		WorkerID: uint(linuxWorker.ID),
 		Worker:   &linuxWorker,
 
 		IsActive:   false,
@@ -182,7 +182,7 @@ func TestSetWorkerSleepSchedule(t *testing.T) {
 	require.NoError(t, err)
 	fetched, err = db.FetchWorkerSleepSchedule(ctx, linuxWorker.UUID)
 	require.NoError(t, err)
-	assertEqualSleepSchedule(t, linuxWorker.ID, emptySchedule, *fetched)
+	assertEqualSleepSchedule(t, uint(linuxWorker.ID), emptySchedule, *fetched)
 
 }
 
@@ -212,7 +212,7 @@ func TestSetWorkerSleepScheduleNextCheck(t *testing.T) {
 
 	fetched, err := db.FetchWorkerSleepSchedule(ctx, schedule.Worker.UUID)
 	require.NoError(t, err)
-	assertEqualSleepSchedule(t, schedule.Worker.ID, schedule, *fetched)
+	assertEqualSleepSchedule(t, uint(schedule.Worker.ID), schedule, *fetched)
 }
 
 func TestFetchSleepSchedulesToCheck(t *testing.T) {
@@ -293,9 +293,9 @@ func TestFetchSleepSchedulesToCheck(t *testing.T) {
 	require.NoError(t, err)
 	require.Len(t, toCheck, 2)
 
-	assertEqualSleepSchedule(t, schedule0.Worker.ID, schedule0, *toCheck[0])
+	assertEqualSleepSchedule(t, uint(schedule0.Worker.ID), schedule0, *toCheck[0])
 	assert.Nil(t, toCheck[0].Worker, "the Worker should NOT be fetched")
-	assertEqualSleepSchedule(t, schedule2.Worker.ID, schedule1, *toCheck[1])
+	assertEqualSleepSchedule(t, uint(schedule2.Worker.ID), schedule1, *toCheck[1])
 	assert.Nil(t, toCheck[1].Worker, "the Worker should NOT be fetched")
 }
 

internal/manager/persistence/worker_tag.go

@@ -173,3 +173,17 @@ func (db *DB) WorkerSetTags(ctx context.Context, worker *Worker, tagUUIDs []stri
 
 	return qtx.commit()
 }
+
+func (db *DB) FetchTagsOfWorker(ctx context.Context, workerUUID string) ([]WorkerTag, error) {
+	queries := db.queries()
+	tags, err := queries.FetchTagsOfWorker(ctx, workerUUID)
+	if err != nil {
+		return nil, workerTagError(err, "fetching tags of worker %s", workerUUID)
+	}
+
+	gormTags := make([]WorkerTag, len(tags))
+	for index, tag := range tags {
+		gormTags[index] = *convertSqlcWorkerTag(tag)
+	}
+	return gormTags, nil
+}

internal/manager/persistence/worker_tag_test.go

@@ -101,8 +101,11 @@ func TestAssignUnassignWorkerTags(t *testing.T) {
 		w, err := f.db.FetchWorker(f.ctx, f.worker.UUID)
 		require.NoError(t, err)
 
+		tags, err := f.db.queries().FetchTagsOfWorker(f.ctx, w.UUID)
+		require.NoError(t, err)
+
 		// Catch doubly-reported tags, as the maps below would hide those cases.
-		assert.Len(t, w.Tags, len(tagUUIDs), msgLabel)
+		assert.Len(t, tags, len(tagUUIDs), msgLabel)
 
 		expectTags := make(map[string]bool)
 		for _, cid := range tagUUIDs {
@@ -110,8 +113,8 @@ func TestAssignUnassignWorkerTags(t *testing.T) {
 		}
 
 		actualTags := make(map[string]bool)
-		for _, c := range w.Tags {
+		for _, tag := range tags {
-			actualTags[c.UUID] = true
+			actualTags[tag.UUID] = true
 		}
 
 		assert.Equal(t, expectTags, actualTags, msgLabel)
@@ -171,9 +174,9 @@ func TestDeleteWorkerTagWithWorkersAssigned(t *testing.T) {
 	require.NoError(t, f.db.DeleteWorkerTag(f.ctx, f.tag.UUID))
 
 	// Check the Worker has been unassigned from the tag.
-	w, err := f.db.FetchWorker(f.ctx, f.worker.UUID)
+	tags, err := f.db.queries().FetchTagsOfWorker(f.ctx, f.worker.UUID)
 	require.NoError(t, err)
-	assert.Empty(t, w.Tags)
+	assert.Empty(t, tags)
 }
 
 func assertTagsMatch(t *testing.T, f WorkerTestFixture, expectUUIDs ...string) {

internal/manager/persistence/workers.go

@@ -7,7 +7,6 @@ import (
 	"database/sql"
 	"errors"
 	"fmt"
-	"strings"
 	"time"
 
 	"github.com/rs/zerolog/log"
@@ -15,7 +14,9 @@ import (
 	"projects.blender.org/studio/flamenco/pkg/api"
 )
 
-type Worker struct {
+type Worker = sqlc.Worker
+
+type Worker__gorm struct {
 	Model
 	DeletedAt sql.NullTime
 
@@ -38,76 +39,34 @@ type Worker struct {
 	Tags []*WorkerTag
 }
 
-func (w *Worker) Identifier() string {
-	// Avoid a panic when worker.Identifier() is called on a nil pointer.
-	if w == nil {
-		return "-nil worker-"
-	}
-	return fmt.Sprintf("%s (%s)", w.Name, w.UUID)
-}
-
-// TaskTypes returns the worker's supported task types as list of strings.
-func (w *Worker) TaskTypes() []string {
-	return strings.Split(w.SupportedTaskTypes, ",")
-}
-
-// StatusChangeRequest stores a requested status change on the Worker.
-// This just updates the Worker instance, but doesn't store the change in the
-// database.
-func (w *Worker) StatusChangeRequest(status api.WorkerStatus, isLazyRequest bool) {
-	w.StatusRequested = status
-	w.LazyStatusRequest = isLazyRequest
-}
-
-// StatusChangeClear clears the requested status change of the Worker.
-// This just updates the Worker instance, but doesn't store the change in the
-// database.
-func (w *Worker) StatusChangeClear() {
-	w.StatusRequested = ""
-	w.LazyStatusRequest = false
-}
-
 func (db *DB) CreateWorker(ctx context.Context, w *Worker) error {
 	queries := db.queries()
 
 	now := db.nowNullable().Time
-	workerID, err := queries.CreateWorker(ctx, sqlc.CreateWorkerParams{
+	params := sqlc.CreateWorkerParams{
-		CreatedAt: now,
+		CreatedAt:          now,
-		UUID:      w.UUID,
+		UUID:               w.UUID,
-		Secret:    w.Secret,
+		Secret:             w.Secret,
-		Name:      w.Name,
+		Name:               w.Name,
-		Address:   w.Address,
+		Address:            w.Address,
-		Platform:  w.Platform,
+		Platform:           w.Platform,
-		Software:  w.Software,
+		Software:           w.Software,
-		Status:    string(w.Status),
+		Status:             w.Status,
-		LastSeenAt: sql.NullTime{
+		LastSeenAt:         nullTimeToUTC(w.LastSeenAt),
-			Time:  w.LastSeenAt.UTC(),
+		StatusRequested:    w.StatusRequested,
-			Valid: !w.LastSeenAt.IsZero(),
-		},
-		StatusRequested:    string(w.StatusRequested),
 		LazyStatusRequest:  w.LazyStatusRequest,
 		SupportedTaskTypes: w.SupportedTaskTypes,
 		DeletedAt:          sql.NullTime(w.DeletedAt),
 		CanRestart:         w.CanRestart,
-	})
+	}
+
+	workerID, err := queries.CreateWorker(ctx, params)
 	if err != nil {
 		return fmt.Errorf("creating new worker: %w", err)
 	}
 
-	w.ID = uint(workerID)
+	w.ID = workerID
-	w.CreatedAt = now
+	w.CreatedAt = params.CreatedAt
-
-	// TODO: remove the create-with-tags functionality to a higher-level function.
-	// This code is just here to make this function work like the GORM code did.
-	for _, tag := range w.Tags {
-		err := queries.WorkerAddTagMembership(ctx, sqlc.WorkerAddTagMembershipParams{
-			WorkerTagID: int64(tag.ID),
-			WorkerID:    workerID,
-		})
-		if err != nil {
-			return err
-		}
-	}
 
 	return nil
 }
@@ -120,19 +79,7 @@ func (db *DB) FetchWorker(ctx context.Context, uuid string) (*Worker, error) {
 		return nil, workerError(err, "fetching worker %s", uuid)
 	}
 
-	// TODO: remove this code, and let the caller fetch the tags when interested in them.
+	return &worker, nil
-	workerTags, err := queries.FetchTagsOfWorker(ctx, uuid)
-	if err != nil {
-		return nil, workerTagError(err, "fetching tags of worker %s", uuid)
-	}
-
-	convertedWorker := convertSqlcWorker(worker)
-	convertedWorker.Tags = make([]*WorkerTag, len(workerTags))
-	for index := range workerTags {
-		convertedWorker.Tags[index] = convertSqlcWorkerTag(workerTags[index])
-	}
-
-	return convertedWorker, nil
 }
 
 func (db *DB) DeleteWorker(ctx context.Context, uuid string) error {
@@ -168,11 +115,11 @@ func (db *DB) FetchWorkers(ctx context.Context) ([]*Worker, error) {
 		return nil, workerError(err, "fetching all workers")
 	}
 
-	gormWorkers := make([]*Worker, len(workers))
+	workerPointers := make([]*Worker, len(workers))
 	for idx := range workers {
-		gormWorkers[idx] = convertSqlcWorker(workers[idx].Worker)
+		workerPointers[idx] = &workers[idx]
 	}
-	return gormWorkers, nil
+	return workerPointers, nil
 }
 
 // FetchWorkerTask returns the most recent task assigned to the given Worker.
@@ -184,8 +131,8 @@ func (db *DB) FetchWorkerTask(ctx context.Context, worker *Worker) (*Task, error
 	workerID := sql.NullInt64{Int64: int64(worker.ID), Valid: true}
 
 	row, err := queries.FetchWorkerTask(ctx, sqlc.FetchWorkerTaskParams{
-		TaskStatusActive: string(api.TaskStatusActive),
+		TaskStatusActive: api.TaskStatusActive,
-		JobStatusActive:  string(api.JobStatusActive),
+		JobStatusActive:  api.JobStatusActive,
 		WorkerID:         workerID,
 	})
 
@@ -224,10 +171,10 @@ func (db *DB) SaveWorkerStatus(ctx context.Context, w *Worker) error {
 
 	err := queries.SaveWorkerStatus(ctx, sqlc.SaveWorkerStatusParams{
 		UpdatedAt:         db.nowNullable(),
-		Status:            string(w.Status),
+		Status:            w.Status,
-		StatusRequested:   string(w.StatusRequested),
+		StatusRequested:   w.StatusRequested,
 		LazyStatusRequest: w.LazyStatusRequest,
-		ID:                int64(w.ID),
+		ID:                w.ID,
 	})
 	if err != nil {
 		return fmt.Errorf("saving worker status: %w", err)
@@ -235,10 +182,9 @@ func (db *DB) SaveWorkerStatus(ctx context.Context, w *Worker) error {
 	return nil
 }
 
-func (db *DB) SaveWorker(ctx context.Context, w *Worker) error {
+func (db *DB) SaveWorker(ctx context.Context, w *sqlc.Worker) error {
-	// TODO: remove this code, and just let the caller call CreateWorker() directly.
 	if w.ID == 0 {
-		return db.CreateWorker(ctx, w)
+		panic("Do not use SaveWorker() to create a new Worker, use CreateWorker() instead")
 	}
 
 	queries := db.queries()
@@ -251,13 +197,13 @@ func (db *DB) SaveWorker(ctx context.Context, w *Worker) error {
 		Address:            w.Address,
 		Platform:           w.Platform,
 		Software:           w.Software,
-		Status:             string(w.Status),
+		Status:             w.Status,
-		LastSeenAt:         sql.NullTime{Time: w.LastSeenAt, Valid: !w.LastSeenAt.IsZero()},
+		LastSeenAt:         w.LastSeenAt,
-		StatusRequested:    string(w.StatusRequested),
+		StatusRequested:    w.StatusRequested,
 		LazyStatusRequest:  w.LazyStatusRequest,
 		SupportedTaskTypes: w.SupportedTaskTypes,
 		CanRestart:         w.CanRestart,
-		ID:                 int64(w.ID),
+		ID:                 w.ID,
 	})
 	if err != nil {
 		return fmt.Errorf("saving worker: %w", err)
@@ -303,34 +249,6 @@ func (db *DB) SummarizeWorkerStatuses(ctx context.Context) (WorkerStatusCount, e
 	return statusCounts, nil
 }
 
-// convertSqlcWorker converts a worker from the SQLC-generated model to the model
-// expected by the rest of the code. This is mostly in place to aid in the GORM
-// to SQLC migration. It is intended that eventually the rest of the code will
-// use the same SQLC-generated model.
-func convertSqlcWorker(worker sqlc.Worker) *Worker {
-	return &Worker{
-		Model: Model{
-			ID:        uint(worker.ID),
-			CreatedAt: worker.CreatedAt,
-			UpdatedAt: worker.UpdatedAt.Time,
-		},
-		DeletedAt: worker.DeletedAt,
-
-		UUID:               worker.UUID,
-		Secret:             worker.Secret,
-		Name:               worker.Name,
-		Address:            worker.Address,
-		Platform:           worker.Platform,
-		Software:           worker.Software,
-		Status:             api.WorkerStatus(worker.Status),
-		LastSeenAt:         worker.LastSeenAt.Time,
-		CanRestart:         worker.CanRestart,
-		StatusRequested:    api.WorkerStatus(worker.StatusRequested),
-		LazyStatusRequest:  worker.LazyStatusRequest,
-		SupportedTaskTypes: worker.SupportedTaskTypes,
-	}
-}
-
 // convertSqlcWorkerTag converts a worker tag from the SQLC-generated model to
 // the model expected by the rest of the code. This is mostly in place to aid in
 // the GORM to SQLC migration. It is intended that eventually the rest of the

internal/manager/sleep_scheduler/mocks/interfaces_mock.gen.go

@@ -10,6 +10,7 @@ import (
 
 	gomock "github.com/golang/mock/gomock"
 	persistence "projects.blender.org/studio/flamenco/internal/manager/persistence"
+	sqlc "projects.blender.org/studio/flamenco/internal/manager/persistence/sqlc"
 	api "projects.blender.org/studio/flamenco/pkg/api"
 )
 
@@ -81,7 +82,7 @@ func (mr *MockPersistenceServiceMockRecorder) FetchWorkerSleepSchedule(arg0, arg
 }
 
 // SaveWorkerStatus mocks base method.
-func (m *MockPersistenceService) SaveWorkerStatus(arg0 context.Context, arg1 *persistence.Worker) error {
+func (m *MockPersistenceService) SaveWorkerStatus(arg0 context.Context, arg1 *sqlc.Worker) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "SaveWorkerStatus", arg0, arg1)
 	ret0, _ := ret[0].(error)

internal/manager/sleep_scheduler/sleep_scheduler.go

@@ -178,7 +178,7 @@ func (ss *SleepScheduler) updateWorkerStatus(
 			IsLazy: false,
 			Status: worker.StatusRequested,
 		},
-		Updated: worker.UpdatedAt,
+		Updated: worker.UpdatedAt.Time,
 		Version: worker.Software,
 	})
 

internal/manager/sleep_scheduler/sleep_scheduler_test.go

@@ -118,7 +118,7 @@ func TestApplySleepSchedule(t *testing.T) {
 	ss, mocks, ctx := testFixtures(t)
 
 	worker := persistence.Worker{
-		Model:  persistence.Model{ID: 5},
+		ID:     5,
 		UUID:   "74997de4-c530-4913-b89f-c489f14f7634",
 		Status: api.WorkerStatusOffline,
 	}
@@ -192,7 +192,7 @@ func TestApplySleepScheduleNoStatusChange(t *testing.T) {
 	ss, mocks, ctx := testFixtures(t)
 
 	worker := persistence.Worker{
-		Model:  persistence.Model{ID: 5},
+		ID:     5,
 		UUID:   "74997de4-c530-4913-b89f-c489f14f7634",
 		Status: api.WorkerStatusAsleep,
 	}

internal/manager/task_state_machine/mocks/interfaces_mock.gen.go

@@ -11,6 +11,7 @@ import (
 	gomock "github.com/golang/mock/gomock"
 	zerolog "github.com/rs/zerolog"
 	persistence "projects.blender.org/studio/flamenco/internal/manager/persistence"
+	sqlc "projects.blender.org/studio/flamenco/internal/manager/persistence/sqlc"
 	api "projects.blender.org/studio/flamenco/pkg/api"
 )
 
@@ -79,7 +80,7 @@ func (mr *MockPersistenceServiceMockRecorder) FetchJobsInStatus(arg0 interface{}
 }
 
 // FetchTasksOfWorkerInStatus mocks base method.
-func (m *MockPersistenceService) FetchTasksOfWorkerInStatus(arg0 context.Context, arg1 *persistence.Worker, arg2 api.TaskStatus) ([]*persistence.Task, error) {
+func (m *MockPersistenceService) FetchTasksOfWorkerInStatus(arg0 context.Context, arg1 *sqlc.Worker, arg2 api.TaskStatus) ([]*persistence.Task, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "FetchTasksOfWorkerInStatus", arg0, arg1, arg2)
 	ret0, _ := ret[0].([]*persistence.Task)
@@ -94,7 +95,7 @@ func (mr *MockPersistenceServiceMockRecorder) FetchTasksOfWorkerInStatus(arg0, a
 }
 
 // FetchTasksOfWorkerInStatusOfJob mocks base method.
-func (m *MockPersistenceService) FetchTasksOfWorkerInStatusOfJob(arg0 context.Context, arg1 *persistence.Worker, arg2 api.TaskStatus, arg3 *persistence.Job) ([]*persistence.Task, error) {
+func (m *MockPersistenceService) FetchTasksOfWorkerInStatusOfJob(arg0 context.Context, arg1 *sqlc.Worker, arg2 api.TaskStatus, arg3 *persistence.Job) ([]*persistence.Task, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "FetchTasksOfWorkerInStatusOfJob", arg0, arg1, arg2, arg3)
 	ret0, _ := ret[0].([]*persistence.Task)

internal/manager/timeout_checker/interfaces.go

@@ -9,6 +9,7 @@ import (
 	"github.com/rs/zerolog"
 	"projects.blender.org/studio/flamenco/internal/manager/eventbus"
 	"projects.blender.org/studio/flamenco/internal/manager/persistence"
+	"projects.blender.org/studio/flamenco/internal/manager/persistence/sqlc"
 	"projects.blender.org/studio/flamenco/internal/manager/task_state_machine"
 	"projects.blender.org/studio/flamenco/pkg/api"
 )
@@ -19,7 +20,7 @@ import (
 type PersistenceService interface {
 	FetchTimedOutTasks(ctx context.Context, untouchedSince time.Time) ([]*persistence.Task, error)
 	FetchTimedOutWorkers(ctx context.Context, lastSeenBefore time.Time) ([]*persistence.Worker, error)
-	SaveWorker(ctx context.Context, w *persistence.Worker) error
+	SaveWorker(ctx context.Context, w *sqlc.Worker) error
 }
 
 var _ PersistenceService = (*persistence.DB)(nil)

internal/manager/timeout_checker/mocks/interfaces_mock.gen.go

@@ -12,6 +12,7 @@ import (
 	gomock "github.com/golang/mock/gomock"
 	zerolog "github.com/rs/zerolog"
 	persistence "projects.blender.org/studio/flamenco/internal/manager/persistence"
+	sqlc "projects.blender.org/studio/flamenco/internal/manager/persistence/sqlc"
 	api "projects.blender.org/studio/flamenco/pkg/api"
 )
 
@@ -54,10 +55,10 @@ func (mr *MockPersistenceServiceMockRecorder) FetchTimedOutTasks(arg0, arg1 inte
 }
 
 // FetchTimedOutWorkers mocks base method.
-func (m *MockPersistenceService) FetchTimedOutWorkers(arg0 context.Context, arg1 time.Time) ([]*persistence.Worker, error) {
+func (m *MockPersistenceService) FetchTimedOutWorkers(arg0 context.Context, arg1 time.Time) ([]*sqlc.Worker, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "FetchTimedOutWorkers", arg0, arg1)
-	ret0, _ := ret[0].([]*persistence.Worker)
+	ret0, _ := ret[0].([]*sqlc.Worker)
 	ret1, _ := ret[1].(error)
 	return ret0, ret1
 }
@@ -69,7 +70,7 @@ func (mr *MockPersistenceServiceMockRecorder) FetchTimedOutWorkers(arg0, arg1 in
 }
 
 // SaveWorker mocks base method.
-func (m *MockPersistenceService) SaveWorker(arg0 context.Context, arg1 *persistence.Worker) error {
+func (m *MockPersistenceService) SaveWorker(arg0 context.Context, arg1 *sqlc.Worker) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "SaveWorker", arg0, arg1)
 	ret0, _ := ret[0].(error)
@@ -106,7 +107,7 @@ func (m *MockTaskStateMachine) EXPECT() *MockTaskStateMachineMockRecorder {
 }
 
 // RequeueActiveTasksOfWorker mocks base method.
-func (m *MockTaskStateMachine) RequeueActiveTasksOfWorker(arg0 context.Context, arg1 *persistence.Worker, arg2 string) error {
+func (m *MockTaskStateMachine) RequeueActiveTasksOfWorker(arg0 context.Context, arg1 *sqlc.Worker, arg2 string) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "RequeueActiveTasksOfWorker", arg0, arg1, arg2)
 	ret0, _ := ret[0].(error)

internal/manager/timeout_checker/tasks_test.go

@@ -111,9 +111,9 @@ func TestTaskTimeout(t *testing.T) {
 
 	job := persistence.Job{UUID: "JOB-UUID"}
 	worker := persistence.Worker{
-		UUID:  "WORKER-UUID",
+		UUID: "WORKER-UUID",
-		Name:  "Tester",
+		Name: "Tester",
-		Model: persistence.Model{ID: 47},
+		ID:   47,
 	}
 	taskUnassigned := persistence.Task{
 		UUID:          "TASK-UUID-UNASSIGNED",
@@ -124,13 +124,13 @@ func TestTaskTimeout(t *testing.T) {
 		UUID:          "TASK-UUID-UNKNOWN",
 		Job:           &job,
 		LastTouchedAt: lastTime,
-		WorkerID:      &worker.ID,
+		WorkerID:      ptr(uint(worker.ID)),
 	}
 	taskAssigned := persistence.Task{
 		UUID:          "TASK-UUID-ASSIGNED",
 		Job:           &job,
 		LastTouchedAt: lastTime,
-		WorkerID:      &worker.ID,
+		WorkerID:      ptr(uint(worker.ID)),
 		Worker:        &worker,
 	}
 

internal/manager/timeout_checker/workers.go

@@ -6,7 +6,7 @@ import (
 	"context"
 
 	"github.com/rs/zerolog/log"
-	"projects.blender.org/studio/flamenco/internal/manager/persistence"
+	"projects.blender.org/studio/flamenco/internal/manager/persistence/sqlc"
 	"projects.blender.org/studio/flamenco/pkg/api"
 )
 
@@ -37,11 +37,11 @@ func (ttc *TimeoutChecker) checkWorkers(ctx context.Context) {
 }
 
 // timeoutTask marks a task as 'failed' due to a timeout.
-func (ttc *TimeoutChecker) timeoutWorker(ctx context.Context, worker *persistence.Worker) {
+func (ttc *TimeoutChecker) timeoutWorker(ctx context.Context, worker *sqlc.Worker) {
 	logger := log.With().
 		Str("worker", worker.UUID).
 		Str("name", worker.Name).
-		Str("lastSeenAt", worker.LastSeenAt.String()).
+		Str("lastSeenAt", worker.LastSeenAt.Time.String()).
 		Logger()
 	logger.Warn().Msg("TimeoutChecker: worker timed out")
 
@@ -63,9 +63,13 @@ func (ttc *TimeoutChecker) timeoutWorker(ctx context.Context, worker *persistenc
 	ttc.broadcaster.BroadcastWorkerUpdate(api.EventWorkerUpdate{
 		Id:             worker.UUID,
 		Name:           worker.Name,
-		PreviousStatus: &prevStatus,
+		PreviousStatus: ptr(api.WorkerStatus(prevStatus)),
 		Status:         api.WorkerStatusError,
-		Updated:        worker.UpdatedAt,
+		Updated:        worker.UpdatedAt.Time,
 		Version:        worker.Software,
 	})
 }
+
+func ptr[T any](value T) *T {
+	return &value
+}

internal/manager/timeout_checker/workers_test.go

@@ -3,6 +3,7 @@ package timeout_checker
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 import (
+	"database/sql"
 	"testing"
 	"time"
 
@@ -30,8 +31,8 @@ func TestWorkerTimeout(t *testing.T) {
 	worker := persistence.Worker{
 		UUID:            "WORKER-UUID",
 		Name:            "Tester",
-		Model:           persistence.Model{ID: 47},
+		ID:              47,
-		LastSeenAt:      lastSeenAt,
+		LastSeenAt:      sql.NullTime{Time: lastSeenAt, Valid: true},
 		Status:          api.WorkerStatusAsleep,
 		StatusRequested: api.WorkerStatusAwake,
 	}
@@ -58,7 +59,7 @@ func TestWorkerTimeout(t *testing.T) {
 		Name:           worker.Name,
 		PreviousStatus: &prevStatus,
 		Status:         api.WorkerStatusError,
-		Updated:        persistedWorker.UpdatedAt,
+		Updated:        persistedWorker.UpdatedAt.Time,
 		Version:        persistedWorker.Software,
 	})
 

sqlc.yaml

@@ -11,6 +11,14 @@ sql:
             go_type:
               import: "encoding/json"
               type: "RawMessage"
+          - column: jobs.status
+            go_type: { type: "JobStatus", import: "projects.blender.org/studio/flamenco/pkg/api" }
+          - column: tasks.status
+            go_type: { type: "TaskStatus", import: "projects.blender.org/studio/flamenco/pkg/api" }
+          - column: workers.status
+            go_type: { type: "WorkerStatus", import: "projects.blender.org/studio/flamenco/pkg/api" }
+          - column: workers.status_requested
+            go_type: { type: "WorkerStatus", import: "projects.blender.org/studio/flamenco/pkg/api" }
         rename:
           uuid: "UUID"
           uuids: "UUIDs"
@@ -28,6 +36,14 @@ sql:
             go_type:
               import: "encoding/json"
               type: "RawMessage"
+          - column: jobs.status
+            go_type: { type: "JobStatus", import: "projects.blender.org/studio/flamenco/pkg/api" }
+          - column: tasks.status
+            go_type: { type: "TaskStatus", import: "projects.blender.org/studio/flamenco/pkg/api" }
+          - column: workers.status
+            go_type: { type: "WorkerStatus", import: "projects.blender.org/studio/flamenco/pkg/api" }
+          - column: workers.status_requested
+            go_type: { type: "WorkerStatus", import: "projects.blender.org/studio/flamenco/pkg/api" }
         rename:
           uuid: "UUID"
           uuids: "UUIDs"
@@ -45,6 +61,14 @@ sql:
             go_type:
               import: "encoding/json"
               type: "RawMessage"
+          - column: jobs.status
+            go_type: { type: "JobStatus", import: "projects.blender.org/studio/flamenco/pkg/api" }
+          - column: tasks.status
+            go_type: { type: "TaskStatus", import: "projects.blender.org/studio/flamenco/pkg/api" }
+          - column: workers.status
+            go_type: { type: "WorkerStatus", import: "projects.blender.org/studio/flamenco/pkg/api" }
+          - column: workers.status_requested
+            go_type: { type: "WorkerStatus", import: "projects.blender.org/studio/flamenco/pkg/api" }
         rename:
           uuid: "UUID"
           uuids: "UUIDs"
@@ -62,6 +86,14 @@ sql:
             go_type:
               import: "encoding/json"
               type: "RawMessage"
+          - column: jobs.status
+            go_type: { type: "JobStatus", import: "projects.blender.org/studio/flamenco/pkg/api" }
+          - column: tasks.status
+            go_type: { type: "TaskStatus", import: "projects.blender.org/studio/flamenco/pkg/api" }
+          - column: workers.status
+            go_type: { type: "WorkerStatus", import: "projects.blender.org/studio/flamenco/pkg/api" }
+          - column: workers.status_requested
+            go_type: { type: "WorkerStatus", import: "projects.blender.org/studio/flamenco/pkg/api" }
         rename:
           uuid: "UUID"
           uuids: "UUIDs"