Files
vercel__workflow/.changeset/compute-instance-event-field.md
Alex Langenfeld 4a9d26b1cb feat(world): persist the compute instance that ran each step attempt (#3186)
* feat(world): persist the compute instance that ran each step attempt

Add CreateEventParams.computeInstanceId (ambient per-event identity, mirroring requestId) and a readable Event.computeInstanceId. Core stamps it on every step_started write; world-vercel forwards it in the v4 frame meta next to vercelId. Lets observability distinguish steps sharing a compute instance from those on different instances or invocations.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Signed-off-by: Alex Langenfeld <alex.langenfeld@vercel.com>

* test: cover computeInstanceId threading from params to v4 frame meta

world-vercel: computeInstanceId reaches the v4 frame meta, rides alongside vercelId rather than replacing it, and is omitted when unset. core: step_started carries it without displacing the stateUpdatedAt precondition guard (both share one params object).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Signed-off-by: Alex Langenfeld <alex.langenfeld@vercel.com>

* fix(web-shared): render computeInstanceId in the attribute panel

AttributeKey derives from keyof Event, so adding computeInstanceId to the event schema widened it and left the exhaustive attributeToDisplayFn map incomplete (TS2741). Renders it beside deploymentId as 'Compute Instance ID', copyable like the other opaque ids.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Signed-off-by: Alex Langenfeld <alex.langenfeld@vercel.com>

* fix(world-postgres): exclude computeInstanceId from the events column contract

The events table asserts satisfies DrizzlishOfType<...Omit<Event, 'occurredAt'>...>, so adding computeInstanceId to the event schema broke the build (TS1360). This world does not persist it, matching how occurredAt is already handled.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Signed-off-by: Alex Langenfeld <alex.langenfeld@vercel.com>

* refactor: move computeInstanceId to the analytics read contract

The server routes computeInstanceId into ClickHouse and returns it on AnalyticsEvent/AnalyticsStep, never on the event record — so Event.computeInstanceId was dead on read and zod would strip the field off the analytics wire. Move it to AnalyticsEventSchema/AnalyticsStepSchema (beside vercelId/requestId, the same class of ambient provenance), which also drops the world-postgres column-contract exclusion entirely.

Also: hoist the duplicated step_started params into one local, extract the repeated mock-agent harness in events.test.ts, and use vi.spyOn plus an identity assertion against COMPUTE_INSTANCE_ID.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Signed-off-by: Alex Langenfeld <alex.langenfeld@vercel.com>

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Signed-off-by: Alex Langenfeld <alex.langenfeld@vercel.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-30 17:20:18 -05:00

442 B

@workflow/core, @workflow/world, @workflow/world-vercel, @workflow/web-shared
@workflow/core @workflow/world @workflow/world-vercel @workflow/web-shared
minor minor minor minor

Record the compute instance that ran each step attempt: CreateEventParams.computeInstanceId is stamped on step_started writes, forwarded in the world-vercel v4 frame meta alongside vercelId, read back on AnalyticsEvent / AnalyticsStep, and surfaced as "Compute Instance ID" in the observability attribute panel.