Fix for Schedules list page slow loading

Getting BackgroundWorkerTask was very slow (Prisma was getting every single one…)

Author: matt-aitken

apps/webapp/app/components/runs/v3/ScheduleFilters.tsx

@@ -24,10 +24,6 @@ export const ScheduleListFilters = z.object({
     .string()
     .optional()
     .transform((value) => (value ? value.split(",") : undefined)),
-  environments: z
-    .string()
-    .optional()
-    .transform((value) => (value ? value.split(",") : undefined)),
   type: z.union([z.literal("declarative"), z.literal("imperative")]).optional(),
   search: z.string().optional(),
 });
@@ -44,7 +40,7 @@ export function ScheduleFilters({ possibleTasks }: ScheduleFiltersProps) {
   const navigate = useNavigate();
   const location = useOptimisticLocation();
   const searchParams = new URLSearchParams(location.search);
-  const { environments, tasks, page, search, type } = ScheduleListFilters.parse(
+  const { tasks, page, search, type } = ScheduleListFilters.parse(
     Object.fromEntries(searchParams.entries())
   );
 

apps/webapp/app/presenters/v3/ScheduleListPresenter.server.ts

@@ -6,9 +6,12 @@ import { getLimit } from "~/services/platform.v3.server";
 import { CheckScheduleService } from "~/v3/services/checkSchedule.server";
 import { calculateNextScheduledTimestamp } from "~/v3/utils/calculateNextSchedule.server";
 import { BasePresenter } from "./basePresenter.server";
+import { findCurrentWorkerFromEnvironment } from "~/v3/models/workerDeployment.server";
+import { ServiceValidationError } from "~/v3/services/baseService.server";
 
 type ScheduleListOptions = {
   projectId: string;
+  environmentId: string;
   userId?: string;
   pageSize?: number;
 } & ScheduleListFilters;
@@ -42,8 +45,8 @@ export class ScheduleListPresenter extends BasePresenter {
   public async call({
     userId,
     projectId,
+    environmentId,
     tasks,
-    environments,
     search,
     page,
     type,
@@ -84,16 +87,45 @@ export class ScheduleListPresenter extends BasePresenter {
       },
     });
 
+    const environment = project.environments.find((env) => env.id === environmentId);
+    if (!environment) {
+      throw new ServiceValidationError("No matching environment for project", 404);
+    }
+
     const schedulesCount = await CheckScheduleService.getUsedSchedulesCount({
       prisma: this._replica,
       environments: project.environments,
     });
 
+    const limit = await getLimit(project.organizationId, "schedules", 100_000_000);
+
+    //get the latest BackgroundWorker
+    const latestWorker = await findCurrentWorkerFromEnvironment(environment, this._replica);
+    if (!latestWorker) {
+      return {
+        currentPage: 1,
+        totalPages: 1,
+        totalCount: 0,
+        schedules: [],
+        possibleTasks: [],
+        hasFilters,
+        limits: {
+          used: schedulesCount,
+          limit,
+        },
+        filters: {
+          tasks,
+          search,
+        },
+      };
+    }
+
     //get all possible scheduled tasks
     const possibleTasks = await this._replica.backgroundWorkerTask.findMany({
-      distinct: ["slug"],
       where: {
+        workerId: latestWorker.id,
         projectId: project.id,
+        runtimeEnvironmentId: environmentId,
         triggerSource: "SCHEDULED",
       },
     });
@@ -107,7 +139,7 @@ export class ScheduleListPresenter extends BasePresenter {
         taskIdentifier: tasks ? { in: tasks } : undefined,
         instances: {
           some: {
-            environmentId: environments ? { in: environments } : undefined,
+            environmentId,
           },
         },
         type: filterType,
@@ -168,13 +200,11 @@ export class ScheduleListPresenter extends BasePresenter {
       where: {
         projectId: project.id,
         taskIdentifier: tasks ? { in: tasks } : undefined,
-        instances: environments
-          ? {
-              some: {
-                environmentId: environments ? { in: environments } : undefined,
-              },
-            }
-          : undefined,
+        instances: {
+          some: {
+            environmentId,
+          },
+        },
         type: filterType,
         AND: search
           ? {
@@ -242,25 +272,19 @@ export class ScheduleListPresenter extends BasePresenter {
       };
     });
 
-    const limit = await getLimit(project.organizationId, "schedules", 100_000_000);
-
     return {
       currentPage: page,
       totalPages: Math.ceil(totalCount / pageSize),
       totalCount: totalCount,
       schedules,
-      possibleTasks: possibleTasks.map((task) => task.slug),
-      possibleEnvironments: project.environments.map((environment) => {
-        return displayableEnvironment(environment, userId);
-      }),
+      possibleTasks: possibleTasks.map((task) => task.slug).sort((a, b) => a.localeCompare(b)),
       hasFilters,
       limits: {
         used: schedulesCount,
         limit,
       },
       filters: {
         tasks,
-        environments,
         search,
       },
     };

apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.schedules/route.tsx

@@ -93,28 +93,21 @@ export const loader = async ({ request, params }: LoaderFunctionArgs) => {
   const url = new URL(request.url);
   const s = Object.fromEntries(url.searchParams.entries());
   const filters = ScheduleListFilters.parse(s);
-  filters.environments = [environment.id];
 
   const presenter = new ScheduleListPresenter();
   const list = await presenter.call({
     userId,
     projectId: project.id,
+    environmentId: environment.id,
     ...filters,
   });
 
   return typedjson(list);
 };
 
 export default function Page() {
-  const {
-    schedules,
-    possibleTasks,
-    possibleEnvironments,
-    hasFilters,
-    limits,
-    currentPage,
-    totalPages,
-  } = useTypedLoaderData<typeof loader>();
+  const { schedules, possibleTasks, hasFilters, limits, currentPage, totalPages } =
+    useTypedLoaderData<typeof loader>();
   const location = useLocation();
   const organization = useOrganization();
   const project = useProject();

apps/webapp/app/routes/api.v1.schedules.ts

@@ -100,9 +100,9 @@ export async function loader({ request }: LoaderFunctionArgs) {
 
   const result = await presenter.call({
     projectId: authenticationResult.environment.projectId,
+    environmentId: authenticationResult.environment.id,
     page: params.data.page ?? 1,
     pageSize: params.data.perPage,
-    environments: [authenticationResult.environment.id],
   });
 
   return {

internal-packages/database/prisma/migrations/20250429100819_background_worker_index_environment_id_and_created_at/migration.sql

@@ -0,0 +1,2 @@
+-- CreateIndex
+CREATE INDEX CONCURRENTLY IF NOT EXISTS "BackgroundWorker_runtimeEnvironmentId_createdAt_idx" ON "BackgroundWorker" ("runtimeEnvironmentId", "createdAt" DESC);

internal-packages/database/prisma/schema.prisma

@@ -1627,6 +1627,8 @@ model BackgroundWorker {
 
   @@unique([projectId, runtimeEnvironmentId, version])
   @@index([runtimeEnvironmentId])
+  // Get the latest worker for a given environment
+  @@index([runtimeEnvironmentId, createdAt(sort: Desc)])
 }
 
 model BackgroundWorkerFile {