Manager: write to task log when assigning it to a worker

FEATURES.md

@@ -54,6 +54,7 @@ Note that list is **not** in any specific order.
   - [ ] Jobs
   - [ ] Tasks
 
+- [x] Let Manager write to task log when it's assigned to a worker.
 - [ ] Worker sleep schedule
 - [ ] Loading of job compiler scripts from disk
 - [ ] CLI option to write built-in job compiler scripts to disk

internal/manager/api_impl/workers.go

@@ -318,6 +318,13 @@ func (f *Flamenco) ScheduleTask(e echo.Context) error {
 		return e.NoContent(http.StatusNoContent)
 	}
 
+	// Add a note to the task log about the worker assignment.
+	err = f.logStorage.Write(logger, dbTask.Job.UUID, dbTask.UUID,
+		fmt.Sprintf("Task assigned to worker %s (%s)", worker.Name, worker.UUID))
+	if err != nil {
+		logger.Error().Err(err).Msg("error writing to task log")
+	}
+
 	// Convert database objects to API objects:
 	apiCommands := []api.Command{}
 	for _, cmd := range dbTask.Commands {

internal/manager/api_impl/workers_test.go

@@ -35,6 +35,9 @@ func TestTaskScheduleHappy(t *testing.T) {
 	}
 	mf.persistence.EXPECT().ScheduleTask(echo.Request().Context(), &worker).Return(&task, nil)
 
+	mf.logStorage.EXPECT().Write(gomock.Any(), job.UUID, task.UUID,
+		"Task assigned to worker дрон (e7632d62-c3b8-4af0-9e78-01752928952c)")
+
 	err := mf.flamenco.ScheduleTask(echo)
 	assert.NoError(t, err)