Files
nicktrn d541caeb5e feat(supervisor): wide events + warm-start trace propagation (#3669)
Adds wide-event observability for the supervisor: one flat-keyed JSON
line per dequeue iteration, workload-server route, and run socket
lifecycle event. Events carry `trace_id` sourced from the inbound W3C
traceparent plus `meta.run_id` and related identifiers, so they join
across services by run.

The outbound warm-start POST also forwards the inbound traceparent so
the upstream receiver continues the same trace instead of minting a new
one.

Off by default behind `TRIGGER_WIDE_EVENTS_ENABLED`. With the flag off,
no events are emitted, no ALS state is allocated, and the outbound
warm-start request is unchanged — every call site was audited to confirm
the off path is byte-identical to current behavior.

Dequeue-path phase timings recorded under `phase.<name>.duration_ms`:
`restore`, `warm_start`, `workload_create`. A `path_taken` extra
distinguishes `restore` / `warm_start` / `cold_create` /
`skipped_no_image`.

Refs TRI-9480.
2026-06-02 21:11:01 +01:00

2.5 KiB

Server Changes

This directory tracks changes to server-only components (webapp, supervisor, coordinator, etc.) that are not captured by changesets. Changesets only track published npm packages — server changes would otherwise go undocumented.

When to add a file

Server-only PRs: If your PR only changes apps/webapp/, apps/supervisor/, apps/coordinator/, or other server components (and does NOT change anything in packages/), add a .server-changes/ file.

Mixed PRs (both packages and server): Just add a changeset as usual. No .server-changes/ file needed — the changeset covers it.

Package-only PRs: Just add a changeset as usual.

File format

Create a markdown file with a descriptive name:

.server-changes/fix-batch-queue-stalls.md

With this format:

---
area: webapp
type: fix
---

Speed up batch queue processing by removing stalls and fixing retry race

Fields

  • area (required): webapp | supervisor | coordinator | kubernetes-provider | docker-provider
  • type (required): feature | fix | improvement | breaking

Description

The body text (below the frontmatter) is a one-line description of the change. Keep it concise — it will appear in release notes.

Writing guidance

These entries are public-facing - they ship verbatim in user-visible release notes. A few rules to keep them clean:

  • One sentence is usually enough. The body is the bullet in the changelog. If you need a paragraph, you're probably describing the implementation rather than the change.
  • Describe behavior, not implementation. Skip internal scopes, middleware names, library specifics, framework internals. Users care about what's different for them, not how it's wired.
  • Never name internal tools or infra. Observability stacks, internal services, infra components, monitoring backends, CI surfaces, AWS specifics - none of these belong in user-facing notes.

Lifecycle

  1. Engineer adds a .server-changes/ file in their PR
  2. Files accumulate on main as PRs merge
  3. The changeset release PR includes these in its summary
  4. After the release merges, CI cleans up the consumed files

Examples

New feature:

---
area: webapp
type: feature
---

TRQL query language and the Query page

Bug fix:

---
area: webapp
type: fix
---

Fix schedule limit counting for orgs with custom limits

Improvement:

---
area: webapp
type: improvement
---

Use the replica for API auth queries to reduce primary load