fix(webapp): idempotent DeploymentBackgroundWorker creation#3772
fix(webapp): idempotent DeploymentBackgroundWorker creation#3772myftija wants to merge 2 commits into
DeploymentBackgroundWorker creation#3772Conversation
CLI retries after a severed connection were colliding on the BackgroundWorker `(project, env, version)` unique index and burning the retry budget on 500s, leaving deployments to surface as "Indexing timed out" 8 minutes later. Look up an existing row on entry and return it on contentHash match (or 409 on drift); guard the final BUILDING → DEPLOYING transition with an updateMany so a sibling failure handler can't be silently overwritten.
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WalkthroughThis PR makes the background-worker creation endpoint idempotent for sequential requests by adding findOrCreateBackgroundWorker (lookup by project/runtime/version, return existing if contentHash matches, 409 on mismatch, or create new), extracting minimal stored metadata via stripBackgroundWorkerMetadataForStorage, routing createDeploymentBackgroundWorkerV4 through the new service with guarded BUILDING→DEPLOYING transitions, and improving createWorkerTask P2002 handling. Tests and a changelog entry are included. Estimated code review effort🎯 3 (Moderate) | ⏱️ ~20 minutes 🚥 Pre-merge checks | ✅ 3 | ❌ 2❌ Failed checks (2 warnings)
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🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Inline comments:
In `@apps/webapp/test/findOrCreateBackgroundWorker.test.ts`:
- Line 1: Move the test file findOrCreateBackgroundWorker.test.ts out of
apps/webapp/test into the same directory as the source under test
(findOrCreateBackgroundWorker.server.ts) so it is colocated with the
implementation; after moving, update any relative imports in
findOrCreateBackgroundWorker.test.ts (e.g., references to
findOrCreateBackgroundWorker.server.ts or helper imports like containerTest) to
use correct local paths and run tests to ensure imports resolve.
🪄 Autofix (Beta)
Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
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Configuration used: Repository UI
Review profile: CHILL
Plan: Pro
Run ID: 4cefab56-ff8e-4b84-bd10-1ee0fa7d5fca
📒 Files selected for processing (6)
.server-changes/idempotent-background-worker-registration.mdapps/webapp/app/v3/services/createBackgroundWorker.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4/findOrCreateBackgroundWorker.server.tsapps/webapp/app/v3/services/stripBackgroundWorkerMetadataForStorage.server.tsapps/webapp/test/findOrCreateBackgroundWorker.test.ts
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- GitHub Check: webapp / 🧪 Unit Tests: Webapp (2, 8)
- GitHub Check: webapp / 🧪 Unit Tests: Webapp (7, 8)
- GitHub Check: webapp / 🧪 Unit Tests: Webapp (8, 8)
- GitHub Check: webapp / 🧪 Unit Tests: Webapp (6, 8)
- GitHub Check: webapp / 🧪 Unit Tests: Webapp (1, 8)
- GitHub Check: webapp / 🧪 Unit Tests: Webapp (3, 8)
- GitHub Check: e2e-webapp / 🧪 E2E Tests: Webapp
- GitHub Check: webapp / 🧪 Unit Tests: Webapp (5, 8)
- GitHub Check: webapp / 🧪 Unit Tests: Webapp (4, 8)
- GitHub Check: typecheck / typecheck
- GitHub Check: Analyze (javascript-typescript)
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📓 Path-based instructions (10)
**/*.{ts,tsx}
📄 CodeRabbit inference engine (.github/copilot-instructions.md)
**/*.{ts,tsx}: Use types over interfaces for TypeScript
Avoid using enums; prefer string unions or const objects instead
Files:
apps/webapp/app/v3/services/stripBackgroundWorkerMetadataForStorage.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4/findOrCreateBackgroundWorker.server.tsapps/webapp/test/findOrCreateBackgroundWorker.test.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4.server.tsapps/webapp/app/v3/services/createBackgroundWorker.server.ts
{packages/core,apps/webapp}/**/*.{ts,tsx}
📄 CodeRabbit inference engine (.github/copilot-instructions.md)
Use zod for validation in packages/core and apps/webapp
Files:
apps/webapp/app/v3/services/stripBackgroundWorkerMetadataForStorage.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4/findOrCreateBackgroundWorker.server.tsapps/webapp/test/findOrCreateBackgroundWorker.test.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4.server.tsapps/webapp/app/v3/services/createBackgroundWorker.server.ts
**/*.{ts,tsx,js,jsx}
📄 CodeRabbit inference engine (.github/copilot-instructions.md)
Use function declarations instead of default exports
**/*.{ts,tsx,js,jsx}: Prefer static imports over dynamic imports. Only use dynamicimport()when circular dependencies cannot be resolved otherwise, code splitting is needed for performance, or the module must be loaded conditionally at runtime.
Import from@trigger.dev/coreusing subpaths only - never import from the root.
When writing Trigger.dev tasks, always import from@trigger.dev/sdk. Never use@trigger.dev/sdk/v3or deprecatedclient.defineJob.
Add agentcrumbs markers (//@Crumbsor `#region `@crumbs) as you write code, not just when debugging. They stay on the branch throughout development and are stripped byagentcrumbs stripbefore merge.
Files:
apps/webapp/app/v3/services/stripBackgroundWorkerMetadataForStorage.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4/findOrCreateBackgroundWorker.server.tsapps/webapp/test/findOrCreateBackgroundWorker.test.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4.server.tsapps/webapp/app/v3/services/createBackgroundWorker.server.ts
**/*.ts
📄 CodeRabbit inference engine (.cursor/rules/otel-metrics.mdc)
**/*.ts: When creating or editing OTEL metrics (counters, histograms, gauges), ensure metric attributes have low cardinality by using only enums, booleans, bounded error codes, or bounded shard IDs
Do not use high-cardinality attributes in OTEL metrics such as UUIDs/IDs (envId, userId, runId, projectId, organizationId), unbounded integers (itemCount, batchSize, retryCount), timestamps (createdAt, startTime), or free-form strings (errorMessage, taskName, queueName)
When exporting OTEL metrics via OTLP to Prometheus, be aware that the exporter automatically adds unit suffixes to metric names (e.g., 'my_duration_ms' becomes 'my_duration_ms_milliseconds', 'my_counter' becomes 'my_counter_total'). Account for these transformations when writing Grafana dashboards or Prometheus queries
Files:
apps/webapp/app/v3/services/stripBackgroundWorkerMetadataForStorage.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4/findOrCreateBackgroundWorker.server.tsapps/webapp/test/findOrCreateBackgroundWorker.test.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4.server.tsapps/webapp/app/v3/services/createBackgroundWorker.server.ts
apps/webapp/**/*.{ts,tsx}
📄 CodeRabbit inference engine (.cursor/rules/webapp.mdc)
apps/webapp/**/*.{ts,tsx}: Access environment variables through theenvexport ofenv.server.tsinstead of directly accessingprocess.env
Use subpath exports from@trigger.dev/corepackage instead of importing from the root@trigger.dev/corepathUse named constants for sentinel/placeholder values (e.g.
const UNSET_VALUE = '__unset__') instead of raw string literals scattered across comparisons
Files:
apps/webapp/app/v3/services/stripBackgroundWorkerMetadataForStorage.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4/findOrCreateBackgroundWorker.server.tsapps/webapp/test/findOrCreateBackgroundWorker.test.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4.server.tsapps/webapp/app/v3/services/createBackgroundWorker.server.ts
apps/webapp/**/*.server.ts
📄 CodeRabbit inference engine (apps/webapp/CLAUDE.md)
apps/webapp/**/*.server.ts: Never userequest.signalfor detecting client disconnects. UsegetRequestAbortSignal()fromapp/services/httpAsyncStorage.server.tsinstead, which is wired directly to Expressres.on('close')and fires reliably
Access environment variables viaenvexport fromapp/env.server.ts. Never useprocess.envdirectly
Always usefindFirstinstead offindUniquein Prisma queries.findUniquehas an implicit DataLoader that batches concurrent calls and has active bugs even in Prisma 6.x (uppercase UUIDs returning null, composite key SQL correctness issues, 5-10x worse performance).findFirstis never batched and avoids this entire class of issues
Files:
apps/webapp/app/v3/services/stripBackgroundWorkerMetadataForStorage.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4/findOrCreateBackgroundWorker.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4.server.tsapps/webapp/app/v3/services/createBackgroundWorker.server.ts
**/*.{js,jsx,ts,tsx,json,md,yml,yaml}
📄 CodeRabbit inference engine (AGENTS.md)
Code formatting must be enforced using Prettier before committing
Files:
apps/webapp/app/v3/services/stripBackgroundWorkerMetadataForStorage.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4/findOrCreateBackgroundWorker.server.tsapps/webapp/test/findOrCreateBackgroundWorker.test.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4.server.tsapps/webapp/app/v3/services/createBackgroundWorker.server.ts
**/*.{test,spec}.{ts,tsx}
📄 CodeRabbit inference engine (.github/copilot-instructions.md)
Use vitest for all tests in the Trigger.dev repository
Files:
apps/webapp/test/findOrCreateBackgroundWorker.test.ts
apps/webapp/**/*.test.{ts,tsx}
📄 CodeRabbit inference engine (.cursor/rules/webapp.mdc)
Do not import
env.server.tsdirectly or indirectly into test files; instead pass environment-dependent values through options/parameters to make code testableFor testable code, never import
env.server.tsin test files. Pass configuration as options instead (e.g.,realtimeClient.server.tstakes config as constructor arg,realtimeClientGlobal.server.tscreates singleton with env config)
Files:
apps/webapp/test/findOrCreateBackgroundWorker.test.ts
**/*.test.{ts,tsx,js,jsx}
📄 CodeRabbit inference engine (AGENTS.md)
**/*.test.{ts,tsx,js,jsx}: Test files should live beside the files under test and use descriptive describe and it blocks
Unit tests should use vitest framework
Tests should avoid mocks or stubs and use helpers from@internal/testcontainerswhen Redis or Postgres are needed
**/*.test.{ts,tsx,js,jsx}: Never mock anything in tests - use testcontainers instead.
Test files should be placed next to source files (e.g.,MyService.ts->MyService.test.ts).
Files:
apps/webapp/test/findOrCreateBackgroundWorker.test.ts
🧠 Learnings (12)
📚 Learning: 2026-03-10T17:56:20.938Z
Learnt from: samejr
Repo: triggerdotdev/trigger.dev PR: 3201
File: apps/webapp/app/v3/services/setSeatsAddOn.server.ts:25-29
Timestamp: 2026-03-10T17:56:20.938Z
Learning: Do not implement local userId-to-organizationId authorization checks inside org-scoped service classes (e.g., SetSeatsAddOnService, SetBranchesAddOnService) in the web app. Rely on route-layer authentication (requireUserId(request)) and org membership enforcement via the _app.orgs.$organizationSlug layout route. Any userId/organizationId that reaches these services from org-scoped routes has already been validated. Apply this pattern across all org-scoped services to avoid redundant auth checks and maintain consistency.
Applied to files:
apps/webapp/app/v3/services/stripBackgroundWorkerMetadataForStorage.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4/findOrCreateBackgroundWorker.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4.server.tsapps/webapp/app/v3/services/createBackgroundWorker.server.ts
📚 Learning: 2026-03-22T13:26:12.060Z
Learnt from: ericallam
Repo: triggerdotdev/trigger.dev PR: 3244
File: apps/webapp/app/components/code/TextEditor.tsx:81-86
Timestamp: 2026-03-22T13:26:12.060Z
Learning: In the triggerdotdev/trigger.dev codebase, do not flag `navigator.clipboard.writeText(...)` calls for `missing-await`/`unhandled-promise` issues. These clipboard writes are intentionally invoked without `await` and without `catch` handlers across the project; keep that behavior consistent when reviewing TypeScript/TSX files (e.g., usages like in `apps/webapp/app/components/code/TextEditor.tsx`).
Applied to files:
apps/webapp/app/v3/services/stripBackgroundWorkerMetadataForStorage.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4/findOrCreateBackgroundWorker.server.tsapps/webapp/test/findOrCreateBackgroundWorker.test.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4.server.tsapps/webapp/app/v3/services/createBackgroundWorker.server.ts
📚 Learning: 2026-03-22T19:24:14.403Z
Learnt from: matt-aitken
Repo: triggerdotdev/trigger.dev PR: 3187
File: apps/webapp/app/v3/services/alerts/deliverErrorGroupAlert.server.ts:200-204
Timestamp: 2026-03-22T19:24:14.403Z
Learning: In the triggerdotdev/trigger.dev codebase, webhook URLs are not expected to contain embedded credentials/secrets (e.g., fields like `ProjectAlertWebhookProperties` should only hold credential-free webhook endpoints). During code review, if you see logging or inclusion of raw webhook URLs in error messages, do not automatically treat it as a credential-leak/secrets-in-logs issue by default—first verify the URL does not contain embedded credentials (for example, no username/password in the URL, no obvious secret/token query params or fragments). If the URL is credential-free per this project’s conventions, allow the logging.
Applied to files:
apps/webapp/app/v3/services/stripBackgroundWorkerMetadataForStorage.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4/findOrCreateBackgroundWorker.server.tsapps/webapp/test/findOrCreateBackgroundWorker.test.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4.server.tsapps/webapp/app/v3/services/createBackgroundWorker.server.ts
📚 Learning: 2026-05-18T08:21:27.694Z
Learnt from: d-cs
Repo: triggerdotdev/trigger.dev PR: 3632
File: apps/webapp/sentry.server.ts:4-21
Timestamp: 2026-05-18T08:21:27.694Z
Learning: When handling Prisma error P1001 ("Can't reach database server") in TypeScript, don’t assume a single error shape. Prisma can surface P1001 via two different error classes/fields: `PrismaClientKnownRequestError` exposes it as `err.code === "P1001"` (common during mid-query connection drops), while `PrismaClientInitializationError` exposes it as `err.errorCode === "P1001"` (common on client startup failure). Therefore, predicates should use `err.code === "P1001" || err.errorCode === "P1001"`. Do not flag `err.code === "P1001"` as “unreachable/never matches,” as it is expected in production.
Applied to files:
apps/webapp/app/v3/services/stripBackgroundWorkerMetadataForStorage.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4/findOrCreateBackgroundWorker.server.tsapps/webapp/test/findOrCreateBackgroundWorker.test.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4.server.tsapps/webapp/app/v3/services/createBackgroundWorker.server.ts
📚 Learning: 2026-05-18T08:21:27.694Z
Learnt from: d-cs
Repo: triggerdotdev/trigger.dev PR: 3632
File: apps/webapp/sentry.server.ts:4-21
Timestamp: 2026-05-18T08:21:27.694Z
Learning: When handling Prisma errors for P1001 ("Can't reach database server"), do not assume it only appears under a single property name. Prisma may surface P1001 via either `PrismaClientKnownRequestError` (`err.code === "P1001"`, e.g., mid-query connection drops) or `PrismaClientInitializationError` (`err.errorCode === "P1001"`, e.g., client startup connection failure). To reliably detect the condition, check `err.code === "P1001" || err.errorCode === "P1001"`, and avoid review rules that would incorrectly flag `err.code === "P1001"` as unreachable/never-matching.
Applied to files:
apps/webapp/app/v3/services/stripBackgroundWorkerMetadataForStorage.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4/findOrCreateBackgroundWorker.server.tsapps/webapp/test/findOrCreateBackgroundWorker.test.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4.server.tsapps/webapp/app/v3/services/createBackgroundWorker.server.ts
📚 Learning: 2026-03-29T19:16:28.864Z
Learnt from: nicktrn
Repo: triggerdotdev/trigger.dev PR: 3291
File: apps/webapp/app/v3/featureFlags.ts:53-65
Timestamp: 2026-03-29T19:16:28.864Z
Learning: When reviewing TypeScript code that uses Zod v3, treat `z.coerce.*()` schemas as their direct Zod type (e.g., `z.coerce.boolean()` returns a `ZodBoolean` with `_def.typeName === "ZodBoolean"`) rather than a `ZodEffects`. Only `.preprocess()`, `.refine()`/`.superRefine()`, and `.transform()` are expected to wrap schemas in `ZodEffects`. Therefore, in reviewers’ logic like `getFlagControlType`, do not flag/unblock failures that require unwrapping `ZodEffects` when the input schema is a `z.coerce.*` schema.
Applied to files:
apps/webapp/app/v3/services/stripBackgroundWorkerMetadataForStorage.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4/findOrCreateBackgroundWorker.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4.server.tsapps/webapp/app/v3/services/createBackgroundWorker.server.ts
📚 Learning: 2026-05-05T09:38:02.512Z
Learnt from: d-cs
Repo: triggerdotdev/trigger.dev PR: 3523
File: apps/webapp/app/routes/api.v3.batches.ts:178-181
Timestamp: 2026-05-05T09:38:02.512Z
Learning: When reviewing code that catches `ServiceValidationError` in `*.server.ts` files, do not blindly forward `error.status` to HTTP responses, because SVEs may be thrown with non-default statuses (e.g., 400/500) and forwarding them can cause client-visible behavioral regressions (e.g., surfacing 500s to clients). Prefer a safe default response status of `error.status ?? 422`, but only after confirming via the reachable call graph that the caught `ServiceValidationError` instances are expected to carry those non-default statuses; otherwise, normalize to `422` to avoid unexpected client-visible 5xx behavior.
Applied to files:
apps/webapp/app/v3/services/stripBackgroundWorkerMetadataForStorage.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4/findOrCreateBackgroundWorker.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4.server.tsapps/webapp/app/v3/services/createBackgroundWorker.server.ts
📚 Learning: 2026-05-12T21:04:05.815Z
Learnt from: ericallam
Repo: triggerdotdev/trigger.dev PR: 3542
File: apps/webapp/app/components/sessions/v1/SessionStatus.tsx:1-3
Timestamp: 2026-05-12T21:04:05.815Z
Learning: In this Remix + TypeScript codebase, do not flag a server/client boundary violation when a file imports only types from a module matching `*.server`.
Specifically, it’s safe to import types using `import type { Foo } from "*.server"` or `import { type Foo } from "*.server"` because TypeScript erases type-only imports at compile time and they emit no JavaScript, so they won’t cross the Remix server/client bundle boundary.
Only raise the boundary concern for value imports (e.g., `import { Foo }` without `type`, or `import Foo`), since those produce JavaScript output.
Applied to files:
apps/webapp/app/v3/services/stripBackgroundWorkerMetadataForStorage.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4/findOrCreateBackgroundWorker.server.tsapps/webapp/test/findOrCreateBackgroundWorker.test.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4.server.tsapps/webapp/app/v3/services/createBackgroundWorker.server.ts
📚 Learning: 2026-05-14T08:21:07.614Z
Learnt from: d-cs
Repo: triggerdotdev/trigger.dev PR: 3614
File: apps/webapp/app/v3/mollifier/mollifierGate.server.ts:48-52
Timestamp: 2026-05-14T08:21:07.614Z
Learning: When using Trigger.dev v3 feature flags in the webapp, prefer the existing per-org gating mechanism supported by `flag()` via the `overrides` argument. Pass `Organization.featureFlags` (from `environment.organization.featureFlags`) as the `overrides` value; overrides must take precedence over the global `featureFlag` row. Do not require schema changes or add an `orgId` field to `FlagsOptions` for per-org gating—use the overrides pattern consistently (e.g., in gate flows like `resolveOrgFlag` and any server code that threads `environment.organization.featureFlags` into the gate call).
Applied to files:
apps/webapp/app/v3/services/stripBackgroundWorkerMetadataForStorage.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4/findOrCreateBackgroundWorker.server.tsapps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4.server.tsapps/webapp/app/v3/services/createBackgroundWorker.server.ts
📚 Learning: 2026-05-14T14:54:39.095Z
Learnt from: ericallam
Repo: triggerdotdev/trigger.dev PR: 3545
File: .server-changes/agent-view-sessions.md:10-10
Timestamp: 2026-05-14T14:54:39.095Z
Learning: In the `trigger.dev` repository, do not flag inconsistent dot vs slash notation in route/path strings inside `.server-changes/*.md` files. These markdown files are consumed verbatim into the changelog, so the mixed notation (e.g., `resources.orgs.../runs.$runParam/...`) is intentional and should be preserved as-is.
Applied to files:
.server-changes/idempotent-background-worker-registration.md
📚 Learning: 2026-05-07T12:25:18.271Z
Learnt from: d-cs
Repo: triggerdotdev/trigger.dev PR: 3531
File: apps/webapp/test/sentryTraceContext.server.test.ts:9-47
Timestamp: 2026-05-07T12:25:18.271Z
Learning: In the triggerdotdev/trigger.dev webapp test suite, it is acceptable to leave `createInMemoryTracing()` calls that register a global `NodeTracerProvider` without `afterEach`/`afterAll` teardown. Do not flag this as a test-ordering risk when the code follows the established pattern used across webapp tests (e.g., replication service/benchmark/backfiller tests). This is considered safe because `trace.getActiveSpan()` when called outside a `context.with(...)` block reads `AsyncLocalStorage.getStore()` (undefined when no `run()` scope exists), so it falls back to `ROOT_CONTEXT` with no attached span—regardless of which provider is registered.
Applied to files:
apps/webapp/test/findOrCreateBackgroundWorker.test.ts
📚 Learning: 2026-05-18T14:40:02.173Z
Learnt from: ericallam
Repo: triggerdotdev/trigger.dev PR: 3658
File: packages/core/src/v3/realtimeStreams/manager.test.ts:1-147
Timestamp: 2026-05-18T14:40:02.173Z
Learning: In the triggerdotdev/trigger.dev repo, the policy “Never mock anything — use testcontainers instead” should only be enforced for integration tests that interact with real external services (e.g., Redis, Postgres) via actual infrastructure. For unit tests that exercise pure in-memory logic (e.g., cache semantics) it is OK to stub collaborators such as `ApiClient` using Vitest (`vi.fn()`) to assert call counts or control behavior. Do not flag `vi.fn()`-based `ApiClient` stubs in unit tests as violations of the testcontainers policy.
Applied to files:
apps/webapp/test/findOrCreateBackgroundWorker.test.ts
🔇 Additional comments (5)
apps/webapp/app/v3/services/stripBackgroundWorkerMetadataForStorage.server.ts (1)
14-28: LGTM!apps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4/findOrCreateBackgroundWorker.server.ts (1)
16-57: LGTM!apps/webapp/app/v3/services/createBackgroundWorker.server.ts (1)
37-37: LGTM!Also applies to: 335-421
apps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4.server.ts (1)
56-60: LGTM!Also applies to: 81-86, 90-95, 195-221
.server-changes/idempotent-background-worker-registration.md (1)
1-7: LGTM!
| @@ -0,0 +1,145 @@ | |||
| import { containerTest } from "@internal/testcontainers"; | |||
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🛠️ Refactor suggestion | 🟠 Major | ⚡ Quick win
Move this test next to the source under test.
Please colocate this suite with findOrCreateBackgroundWorker.server.ts (same directory) to match repository test-location rules.
As per coding guidelines, "**/*.test.{ts,tsx,js,jsx}: Test files should be placed next to source files (e.g., MyService.ts -> MyService.test.ts)."
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
In `@apps/webapp/test/findOrCreateBackgroundWorker.test.ts` at line 1, Move the
test file findOrCreateBackgroundWorker.test.ts out of apps/webapp/test into the
same directory as the source under test (findOrCreateBackgroundWorker.server.ts)
so it is colocated with the implementation; after moving, update any relative
imports in findOrCreateBackgroundWorker.test.ts (e.g., references to
findOrCreateBackgroundWorker.server.ts or helper imports like containerTest) to
use correct local paths and run tests to ensure imports resolve.
- Restore local import of `stripBackgroundWorkerMetadataForStorage` in `createBackgroundWorker.server.ts`; the prior diff turned it into a bare re-export and the existing in-file usage broke typecheck. - Drop the `defaultPrisma` fallback on `findOrCreateBackgroundWorker`; importing `~/db.server` in test runs triggered the singleton's lazy Prisma client to attempt a localhost:5432 connection and surface as an unhandled rejection on shutdown.
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Actionable comments posted: 0 |
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🔴 #failBackgroundWorkerDeployment lacks status guard, can regress deployment from DEPLOYING to FAILED on overlapping retries
The BUILDING→DEPLOYING transition was correctly guarded with updateMany + status: "BUILDING" (line 196-209), but #failBackgroundWorkerDeployment still uses an unconditional update (line 235). Before this PR, a retry would fail fast on P2002 at backgroundWorker.create and never reach the error handlers. Now, findOrCreateBackgroundWorker allows retries to proceed past worker creation into file/resource/schedule creation. If a client-side timeout causes the first request (A) and the retry (B) to overlap on the server, and B encounters a transient error in createBackgroundFiles/createWorkerResources/syncDeclarativeSchedules, B calls #failBackgroundWorkerDeployment which unconditionally sets the deployment to FAILED — even if A has already transitioned it to DEPLOYING. A's subsequent updateMany then finds 0 rows (status is FAILED, not BUILDING) and silently skips the transition, leaving the deployment stuck in FAILED.
Concrete scenario timeline
- Request A: creates worker, begins creating files/resources
- Client timeout → Request B starts
- Request B:
findOrCreateBackgroundWorkerreturns existing worker - Request A:
updateManysucceeds → deployment now DEPLOYING - Request B: transient DB error in
createBackgroundFiles - Request B:
#failBackgroundWorkerDeployment→ unconditionalupdatesets FAILED - Deployment stuck in FAILED despite A's successful work
(Refers to lines 234-252)
Prompt for agents
The #failBackgroundWorkerDeployment method at line 234-252 in createDeploymentBackgroundWorkerV4.server.ts uses an unconditional prisma.workerDeployment.update to set status to FAILED. This should use the same optimistic concurrency control pattern as the BUILDING→DEPLOYING transition at lines 196-209: use updateMany with a status: BUILDING guard in the where clause, so that if the deployment has already moved past BUILDING (e.g. to DEPLOYING by a concurrent first request), the FAILED transition is a no-op rather than a state regression. The TimeoutDeploymentService.dequeue call can remain unconditional since dequeuing an already-dequeued timer is harmless. Note that the method currently throws the error after the update; this control flow should be preserved.
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| return prisma.backgroundWorker.create({ | ||
| data: { | ||
| ...BackgroundWorkerId.generate(), | ||
| version: deployment.version, | ||
| runtimeEnvironmentId: environment.id, | ||
| projectId: environment.projectId, | ||
| metadata: stripBackgroundWorkerMetadataForStorage(body.metadata), | ||
| contentHash: body.metadata.contentHash, | ||
| cliVersion: body.metadata.cliPackageVersion, | ||
| sdkVersion: body.metadata.packageVersion, | ||
| supportsLazyAttempts: body.supportsLazyAttempts, | ||
| engine: body.engine, | ||
| runtime: body.metadata.runtime, | ||
| runtimeVersion: body.metadata.runtimeVersion, | ||
| }, | ||
| }); |
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🚩 findOrCreateBackgroundWorker has unhandled P2002 from create on concurrent calls
The findOrCreateBackgroundWorker function (findOrCreateBackgroundWorker.server.ts:40-55) uses a check-then-create pattern against the @@unique([projectId, runtimeEnvironmentId, version]) constraint. If two requests concurrently find no existing worker and both attempt create, one will get a P2002 unique constraint violation that is not caught. The function's JSDoc says "for sequential calls, not concurrent calls" so this is by design, but note that client-side HTTP retries after a timeout can cause server-side concurrency (the server continues processing the first request after the client disconnects). In that scenario, the uncaught P2002 would propagate as a 500 to the retry request. This is actually safer than the alternative (both proceeding), as it prevents state corruption — but the error message will be an opaque Prisma error rather than a user-friendly message.
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| const backgroundWorker = await findOrCreateBackgroundWorker( | ||
| environment, | ||
| deployment, | ||
| body, | ||
| this._prisma | ||
| ); |
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🚩 409 ServiceValidationError from findOrCreateBackgroundWorker doesn't fail the deployment
When findOrCreateBackgroundWorker throws a 409 ServiceValidationError (content hash mismatch at findOrCreateBackgroundWorker.server.ts:33-37), the error propagates to the API route handler which returns the 409 to the client. However, #failBackgroundWorkerDeployment is never called for this error path — the deployment stays in BUILDING and will eventually time out via TimeoutDeploymentService. This is the same behavior as the old code (P2002 from create would also propagate without failing the deployment). It's not a regression but could be improved by wrapping this call site to transition the deployment to FAILED on 409.
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Make
POST /api/v1/deployments/:deploymentId/background-workersidempotent (for sequential requests only) so client-side retries no longer collide on theBackgroundWorker(project, env, version)unique index. Helps make deployments more resilient against the class of indexing failures that surfaces in the dashboard as "Indexing timed out", e.g. during transient database issues.