Response an error message when there is incomplete sbom generate job

src/pkg/scan/sbom/sbom.go

@@ -244,6 +244,14 @@
 	if err != nil {
 		return err
 	}
+	// check if any report has running task associate with it
+	taskMgr := h.TaskMgrFunc()
+	for _, rpt := range sbomReports {
+		if !taskMgr.IsTaskFinished(ctx, rpt.UUID) {
+			return errors.ConflictError(nil).WithMessage("a previous sbom generate process is running")
+		}
+	}
+
 	for _, rpt := range sbomReports {
 		if rpt.MimeType != v1.MimeTypeSBOMReport {
 			continue

src/pkg/scan/sbom/sbom_test.go

@@ -219,6 +219,7 @@ func (suite *SBOMTestSuite) TestMakeReportPlaceHolder() {
 	mock.OnAnything(suite.sbomManager, "Create").Return("uuid", nil).Once()
 	mock.OnAnything(suite.sbomManager, "Delete").Return(nil).Once()
 	mock.OnAnything(suite.taskMgr, "ListScanTasksByReportUUID").Return([]*task.Task{{Status: "Success"}}, nil)
+	mock.OnAnything(suite.taskMgr, "IsTaskFinished").Return(true).Once()
 	mock.OnAnything(suite.artifactCtl, "Get").Return(art, nil)
 	mock.OnAnything(suite.artifactCtl, "Delete").Return(nil)
 	rps, err := suite.handler.MakePlaceHolder(ctx, art, r)

src/pkg/task/task.go

@@ -69,6 +69,8 @@
 	ListScanTasksByReportUUID(ctx context.Context, uuid string) (tasks []*Task, err error)
 	// RetrieveStatusFromTask retrieve status from task
 	RetrieveStatusFromTask(ctx context.Context, reportID string) string
+	// IsTaskFinished checks if the scan task is finished by report UUID
+	IsTaskFinished(ctx context.Context, reportID string) bool
 }
 
 // NewManager creates an instance of the default task manager
@@ -299,3 +301,11 @@
 	}
 	return ""
 }
+
+func (m *manager) IsTaskFinished(ctx context.Context, reportID string) bool {
+	status := m.RetrieveStatusFromTask(ctx, reportID)
+	if len(status) == 0 {
+		return true
+	}
+	return job.Status(status).Final()
+}