Commit Graph

28 Commits

Author SHA1 Message Date
Karthik Kalyan 2668e3325b Durable hook resume: write, then wake (#3841)
* test(core): reproduce lazy resume disposal race

* Fix durable hook resume race

* Fail closed on unknown hook wakes

* Improve unsupported hook wake diagnostics

* Address durable hook resume review feedback

* Harden producer-committed wake handling

* Serialize durable hook resume: write, then wake

resumeHook() now dispatches strictly serially: the hook_received event
is made durable first, and the workflow wake is published only after
the write is acknowledged. The wake is a plain runId message (the shape
the sequential path always published), so the producer-committed wake
barrier, its queue-message field, and the HOOK_RESUME_INPUT_VERSION
bump are all removed — no consumer or backend coordination is needed,
and either side rolls back independently to today's behavior.

The pre-write ops flush now partitions serialization ops: producer-push
uploads are awaited before the event commits (the payload must not
point at bytes still in flight), while consumer-settled reader ops — a
dehydrated WritableStream, e.g. a manual webhook's responseWritable —
are backgrounded. Awaiting those deadlocked the resume against its own
wake (webhookWorkflow failing across the whole e2e matrix).

Also: wake retries stop on definitive 4xx errors instead of burning the
retry budget; WORKFLOW_DISABLE_LAZY_HOOK_RESUME no longer gates
anything and is ignored; the internal resumeHookDurable alias is
removed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* Address review: retry classification, wake dedup, 409 passthrough

- Wake retry classification now actually fires against @vercel/queue:
  its errors carry no status field, so classify by the World's
  deployment-unavailable hook, then numeric status, then the queue
  client's definitive-4xx error names.
- The wake publish carries idempotencyKey `hook-<resumeId>` on the
  claim path, so a retried publish whose response was lost dedups
  instead of costing a duplicate full replay.
- EntityConflictError (HTTP 409) from the durable write is no longer
  re-keyed to HookNotFoundError: every 409 the backend emits on this
  write today is transient (slot conflict past the server's retry
  budget, claim race) and committed nothing, so it surfaces retryable
  instead of presenting as a permanent 404.
- Stamp workflow.hook.resume_committed / wake_published span
  attributes after each leg resolves, making stranded resumes
  (committed event, no wake) queryable from traces.
- Document on the public resumeHook signature that passing the token
  (not a cached Hook) is what makes the write idempotent-on-retry.
- Changeset/changelog: note the ended-run behavior change (late
  webhook deliveries to finished runs now 404 instead of 202) and the
  409 passthrough.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Pranay Prakash <pranay.gp@gmail.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-31 23:18:01 +00:00
Pranay Prakash ffc58078d0 Stop logging on healthy workflow execution (#3878)
A successful run printed several lines that described the runtime working
correctly. Most of it was fallout from defaulting the events transport to
WebSockets (#3702): three breadcrumbs written while the transport was opt-in
became default-path output, because each one reported a choice the caller no
longer makes.

- `world-vercel: using ws events transport (…)` ran once per cold start on
  every deployment, naming the transport it was always going to use.
- The `projectConfig` proxy fallback warned once per process. That World cannot
  hold a socket, so with WS on by default every CLI command and the
  observability app warned about a fallback nobody asked for and nobody can act
  on. Debug-gated and reworded from "requested but" to "unavailable for".
- The `max_duration` / `auth_expiry` drain notice is routine: the transport
  reconnects from the close that follows and no write is lost.

Swept for the same shape elsewhere:

- `world-local`'s queue-concurrency notice fired per message once a fan-out
  exceeded the limit — the semaphore doing its job.
- `@workflow/world`'s active-run recovery line printed on every dev-server
  restart with work in flight. The re-enqueue *failure* above it stays
  unconditional; that one leaves a run unresumed.
- The port-detection diagnostics in `@workflow/utils` keyed off
  `NODE_ENV=development`, which is the only environment that reaches them, so
  the gate made them unconditional for their whole audience.

All of it moves behind `DEBUG=workflow:*` via a new `debugLog` in
`@workflow/utils`, joining world-vercel's existing `httpLog` and `logRetry`
output under one selector. Warnings and errors are untouched, so a run that
actually goes wrong is no quieter than before — the ws-transport tests that
assert failures are never silent still pass unchanged.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Co-Authored-By: Pranay Prakash <1797812+pranaygp@users.noreply.github.com>
2026-08-27 20:45:20 -07:00
Peter Wielander 7e48e7b4de Re-enable the sealed log by default (#3737)
* Revert "[world] Make the sealed log opt-in instead of default-on (#3735)"

Reverts b2cac623d3. New runs are stamped at spec 7 again, now that a
read which cannot see past an unfilled position waits for it instead of
reporting a log that ends there (workflow-server: derive the in-request
seal poll budget from the staleness bound).

Two things are kept from #3735 rather than reverted:

- the world-testing conformance floor at mintedSpecVersion(), which was
  wrong for any staged bump and not specific to this default
- a note on mintedSpecVersion recording what default-on rests on: the
  events density requirement, and that a sealed log meets it by repair
  rather than by construction, so the READ has to wait

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* TEMPORARY: point world-vercel at workflow-server#839 preview

Validating the seal-poll-budget fix end to end with spec 7 on. Reverted
before merge; the override lint guard is expected to fail meanwhile.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* Revert "TEMPORARY: point world-vercel at workflow-server#839 preview"

This reverts commit 5e17cc9335.

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-21 17:32:08 -07:00
Shalabh Chaturvedi dc68611fbf Default the events transport to WebSockets (#3702)
* Default the events transport to WebSockets

WORKFLOW_EVENTS_TRANSPORT=http is the opt-out. Only that exact value
disables it, so a typo'd or empty value fails toward the default rather
than quietly pinning a deployment to HTTP.

The prerequisite the gate named for defaulting on is met:
postEventFrameOverWs opens a client span per frame. What is still missing
is Vercel's outgoing-requests view, which reads instrumented fetch calls
rather than spans and so cannot show a transport that issues no request.

Co-Authored-By: opencode <opencode@vercel.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* docs: WORKFLOW_EVENTS_TRANSPORT defaults to ws

Three places still documented http as the default. Each now states the
opt-out is the exact value http, rather than leaving 'default: ws' to
imply that anything non-ws disables it — the asymmetry is deliberate in
the code and is the part a reader would otherwise get wrong.

Also drops 'Experimental' from the Vercel World page: a setting that is
on for everyone by default is not opt-in experimental, whatever else it
is.

Co-Authored-By: opencode <opencode@vercel.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* Fix the gate's own unit tests for the flipped default

Five tests in ws-transport.test.ts still encoded the opt-in semantics.
Three were the isWsEventsTransportEnabled table itself; the other two
(openWsChannel 'does nothing when the gate is off', and the channel
release equivalent) relied on the suite's ambient unset environment
meaning 'off', which it no longer does. Both now set http explicitly.

Two tests in ws-transport-spans.test.ts asserted HTTP-side span
behaviour the same way. The write one would have kept passing by
falling through resolveWsTransport's null rather than because the gate
was off - passing for the wrong reason, which is what this file exists
to catch.

Also makes the opt-out case-insensitive and trimmed. The gate is
deliberately asymmetric - unrecognized values take the default - but
that asymmetry should not extend to swallowing HTTP or ' http '.
Whoever reaches for the escape hatch is plausibly mid-incident, and
silently ignoring their opt-out over a capital letter is the same class
of silent-wrong-transport bug this flip is meant to stop shipping.

554 tests pass in packages/world-vercel.

Co-Authored-By: opencode <opencode@vercel.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* ci: add a required forced-HTTP e2e lane (#3703)

Flipping the default makes e2e-vercel-prod a WebSocket lane: it sets no
WORKFLOW_EVENTS_TRANSPORT, and unset now means ws. Nothing in the file
would exercise the HTTP events transport against a real deployment any
more, so this is not additive coverage — it replaces coverage the flip
silently removed.

Unconditional and required rather than label-gated like the WS lane.
HTTP is now the fallback, and the fallback is silent: resolveWsTransport
returning null costs a write nothing and logs nothing, which is the
shape of the durabench bug this stack came out of.

Two apps rather than the WS lane's four, since every row is a real
vercel deploy charged to every PR. nextjs-turbopack is the only fixture
emitting OTEL spans, so it is the one that can show which transport
actually ran; express covers the non-Next server path.

Also corrects the WS lane's docblock, which claimed every other job
exercises HTTP only. That stopped being true one commit ago.

Co-authored-by: vercel[bot] <35613825+vercel[bot]@users.noreply.github.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* Fail loudly when step_completed falls back to HTTP under a strict flag

The WS e2e lane asserts that the transport is harmless, not that it is
used: an event written over HTTP produces the same run outcome as one
written over the socket, so the lane stayed green through the entire
period the transport was silently demoted.

WORKFLOW_INTERNAL_EVENTS_TRANSPORT_STRICT turns that one case into a
failed run, and the WS lane now sets it.

Scoped to step_completed alone, because most fallback is legitimate:
run_created is written outside any invocation that opens a channel;
run_started routinely lands before the channel is registered (34% HTTP
on a healthy deployment); step_created and wait_created mostly fold into
events.createBatch, which is not wired to the socket; and a write after
the invocation released its claim falls back by design. step_completed
is issued after a step body has run, and was 100% ws across every
WS-enabled deployment measured on two SDK versions.

The flag reads as off unless the value is exactly 1 or true - the
opposite asymmetry from the transport gate, which treats an unrecognized
value as on. That gate risks a deployment sitting quietly on the wrong
transport; this one fails runs, and should not be acquired by a typo.

Co-Authored-By: opencode <opencode@vercel.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* ci: run the WS transport lane on every PR

It was opt-in behind ws-transport-test because four real vercel deploys
were too much to charge an unrelated PR for a transport that was off by
default. Flipping the default expires that reasoning from both ends: the
cost is no longer for someone else's feature, and this is now the only
lane that asserts the socket carried the events. e2e-vercel-prod
inherits the new default but checks nothing, so behind a label the
average PR would move every deployment onto WebSockets with nothing
verifying they were used.

Drops WS_REQUIRED from the gate along with it. That existed only to let
the lane be legitimately skipped on an unlabelled PR; with no label the
lane is required unconditionally, like e2e-vercel-prod and the HTTP
lane, and the skipped case is now a failure rather than a warning.

Gate script extracted and run against the cases that matter: ws skipped
fails on a standard PR, ws skipped fails under workflow-server-test, and
all-green passes.

Co-Authored-By: opencode <opencode@vercel.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* ci: widen the HTTP transport lane to six server shapes

Before the flip, HTTP was the default and all 28 e2e-vercel-prod
lane-runs covered it. After the flip they cover WebSockets instead, and
this lane is the entirety of the HTTP coverage - two apps was too thin
for a transport that is still supported.

Six, not the full 14, because every row is a real vercel deploy charged
to every PR. Chosen by server shape rather than count: example
(baseline), nextjs-turbopack (Next, and the only fixture emitting OTEL
spans), vite (Vite SSR), express (Node req/res), nitro (h3, also covers
nuxt) and hono (fetch-API Request/Response, a different mount shape from
express). The rest duplicate a shape already covered; python is left out
because it has no conformance gate and needs routes this suite does not
serve.

The first four match the WS lane's matrix on purpose, so the same
fixture runs on both transports and a failure on one can be read against
the other.

Project ids and slugs are copied from e2e-vercel-prod and verified equal
to it; both lanes already use the same team and token.

Co-Authored-By: opencode <opencode@vercel.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

---------

Co-authored-by: vercel[bot] <35613825+vercel[bot]@users.noreply.github.com>
2026-08-21 17:17:04 -07:00
Pranay Prakash f771585486 fix(world-vercel,world-local): hold process-wide state on globalThis (#3728)
* fix(world-vercel,world-local): hold process-wide state on globalThis

Both packages are bundled into the host application's server build, and a
bundler keys module identity on (resource, layer) — Next.js alone builds
`instrument`, app-route, `ssr` and `edge` layers, so one process holds one
copy of each of these modules per layer. Every module-scope `const`/`let` in
them was therefore per-copy state wearing the costume of a process singleton.

vercel/workflow#3493 made `@workflow/world-vercel` bundled rather than
external and the events WebSocket transport regressed to HTTP for exactly
this reason: the queue consumer registered its channel in the `instrument`
copy's `Map` and the write path looked it up in the route copy's empty one. A
deterministic miss, for the life of the process. `@workflow/world-local` had
the same exposure all along — including `runFileLocks`, where a duplicated
mutex simply stops mutually excluding.

Add `globalSingleton()` to `@workflow/utils` (the primitive `@workflow/core`
already hand-rolls for its World cache) and route every mutable module-scope
binding in both worlds through it.

Regression cover, in three layers:

- `global-singleton.test.ts` pins the primitive's semantics.
- `ws-transport-module-copies.test.ts` imports the module twice in one
  process and asserts a transport registered by one copy is found by the
  other — it fails on a plain module-scope `Map`, which is the shipped bug.
- `scripts/lint/module-scope-state.mjs` fails the class: an AST rule banning
  mutable module-scope state in these packages, with `// per-copy-ok: <why>`
  as the deliberate escape. Wired into both packages' `vitest run src`, with
  fixture self-tests so it cannot rot into a no-op.

* test(world-postgres): pin the module-scope-state rule for the postgres world

It is deduped today only because `getRuntimeRequire()` loads it — a property
of how it is loaded, not how it is written, and exactly what changed for
world-vercel in #3493. The package is already clean; this keeps it that way.

* docs(worlds): codify "a world must not hold mutable module state"

A world package is loaded one of two ways, and only one of them gives it a
single module instance: a runtime `require()` (deduped by Node) or the host's
bundler (one copy per layer). Which one you get is a property of how the world
is loaded, not of how it is written, and it changed under `world-vercel` in
#3493 — so the rule has to be "never rely on module scope", not "rely on it
until someone flips a config".

Written down in the four places someone can meet it:

- `docs/content/worlds/{v4,v5}/building-a-world.mdx` — a "Process-wide state"
  section for custom-world authors, with the loading modes spelled out and a
  nudge to prefer World-instance state over a global.
- `packages/world/README.md` — the same constraint on the contract package.
- `CLAUDE.md` — so the next contributor working in these packages sees it.
- `packages/core/src/runtime/world.ts` — at the two static imports, which is
  where the difference between a bundled world and a required one originates.

The rule's own error message now teaches it too, rather than naming a helper.

Consolidates the guard while here: `@workflow/utils` owns the rule and its
fixture self-tests, and sweeps every *published* `packages/world-*` discovered
at runtime, so a world package added later is covered without anyone
remembering. Each world keeps a one-assertion mirror for locality.

* style: drop prose em dashes from this branch's new text

#3704 landed a repo-wide writing pass hours after this branch was written and
took `world-vercel/src` from 406 em dashes to 130 (`ws-transport.ts` alone went
35 to 1). This branch's docs section, README, comments and lint messages were
written before that and would have put 36 of them straight back into the files
that were just cleaned.

Rewritten sentence by sentence rather than by substitution: an em dash becomes a
colon, a comma, a full stop or a parenthetical depending on what it was doing.

Also fixes a real defect the sweep surfaced: `world-postgres`'s guard test was
generated through a shell heredoc and had literal backslash-backticks in its
doc comment.

* Update .changeset/world-module-scope-state.md

Co-authored-by: Peter Wielander <mittgfu@gmail.com>
Signed-off-by: Pranay Prakash <pranay.gp@gmail.com>

* fix(core): build the entrypoint's queue handler from getWorld()

Adopted from #3666 by @MintedKenny, which implements #3665 and could not run
CI as a fork PR. One line of behavior: `workflowEntrypoint`'s lazy handler
init calls `getWorld()` rather than `getWorldHandlers()`.

`getWorldHandlers()` owns a second, build-time-safe cache, so calling it from
the runtime route built a *second* World in the same process. That costs a
stateful World duplicate resources on every instance — world-postgres eagerly
constructs a `pg.Pool` (default `max: 10`) and a nested world-local World in
`createWorld()`, so self-hosted users have been paying for two of each — and,
for a bundled world package, the two Worlds are built by two different module
copies, which is the mechanism behind the WS transport regression the rest of
this branch contains.

The public `getWorldHandlers()` and its separate build-time cache are
unchanged; only the runtime route stops using it.

Kept from the original: the regression test asserting the factory runs exactly
once, and the api-reference wording (re-applied over #3704's list punctuation).
Not taken: renaming the `workflow.route.get_world_handlers` span. It is a
distinct span from the per-request `workflow.route.get_world` at the top of the
flow route, and reusing that name would collide with it in traces and in
`runtime-trace-mode.test.ts`; a comment records why the name outlived the call.

Co-authored-by: Kenneth <kenneth@standardforensics.com>
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix: address AI review on the module-scope work

Two blocking findings, both real:

- **Cross-version state sharing** (`ws-transport.ts`). A process can hold two
  *published versions* of `@workflow/world-vercel` (a transitive dependency
  pinning an older `@workflow/core`, which depends on this package by exact
  version). Both wrote to the same unversioned `Symbol.for` key, so one
  version's write path could be handed a `WsEventsTransport` built by the
  other's class and frame against a protocol it may not share — with no version
  negotiation on the socket to catch it. `shapeVersion` cannot express this: the
  container is stable, the hazard is its contents. The registry and the events
  dispatcher recycler are now keyed by package version. The plain connection
  pools stay unversioned; sharing those across copies is the point.

- **The documented pattern failed the rule this PR adds.** The custom-world docs
  teach `store[StateKey] ??= …`, which the rule flagged as a field write. It now
  recognizes state rooted at `globalThis`, following one alias hop, which is
  also what `core/private.ts:23` and `next/src/index.ts:58` are already doing
  correctly (core drops 26 findings to 22, next 7 to 6). The docs also now say
  outright that `globalSingleton()` is the same thing, since AGENTS.md
  prescribes it and the page did not mention it.

Rule precision, from the review's probes:

- `.mts`/`.cts` are scanned. `@workflow/world-testing` is authored in `.mts`, so
  its entry in the sweep was passing vacuously — with the walk fixed it reports
  a real finding, now annotated (it is a standalone `serve()` entry).
- Mutations in top-level statements no longer count. A table filled at module
  evaluation is identical in every copy; divergence needs a later write.
- `static` class fields are collected, attributed to the class name.
- An *exported* binding initialized to an empty collection is a finding on its
  own, which approximates the cross-file case the walk cannot resolve.

Six fixtures pin the new behavior. The rule's header now states what it does not
see, and AGENTS.md states where the sweep stops and why core is not gated yet.

Also tags `resetGlobalSingletonForTest` `@internal`.

* fix(lint): attribute a static-field write to the field, not the class

The static-field support added in the previous commit keyed `declared` on the
class name, so a class carrying more than one mutable static reported one
finding instead of one per field, and labelled the survivor with whichever
mutation was seen first. On a two-static fixture it reported
`static Registry.latch  (`.set()`)`: the name of one field, the reason
belonging to the other, pointing the reader at the wrong line.

Key static fields `Class.field` and resolve a write to the same shape, via a
new `memberPath()` that takes the first two segments of a member chain and
tries that key before the bare root identifier. Two follow-ons fall out of
having the path:

- `this.field` inside a `static` member resolves to the class, which is the
  ordinary way to write the mutation. `staticClassOf()` returns nothing for an
  instance member, where `this` is an instance and the state is per-instance
  rather than per-copy, and nothing inside a nested `function`, which rebinds
  `this`.
- `state.count++` is now a finding, like the `state.count += 1` that
  `assignment()` already reported.

Fixtures pin all four, including the instance-field case that must stay clean.
The four world packages still report zero, and the extracted `recordMutation()`
keeps the file at its previous two Biome complexity warnings.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix: make module duplication inert across every bundled package

`@workflow/core` is bundled into the host server build the same way the worlds
are, and always has been — the original repro measured three live copies in
every arm, including the pre-#3493 external one. One instance is not reachable:
layers cannot share a module, and core cannot be external because it *is*
workflow code (`runtime/start.ts:253` and nine methods in `runtime/run.ts` are
`'use step'`), so it must go through the SWC loader. The Next integration
already encodes that rule by removing workflow-bearing packages from
`serverExternalPackages`.

So the duplication stays and the hazard is removed instead, everywhere the
duplication can happen.

`@workflow/core` (22 findings to 0): warn-once latches in `constants.ts`,
`start.ts` and `telemetry.ts`; the source-map tracer cache; the VM script cache;
the QuickJS compiled-assets and baseline caches; the dev-server port cache (its
own comment already said "per process"); the text codecs; the zstd browser
decoder; and the `useStep` closure brand, where a function marked by one copy
was invisible to another.

The one with teeth was `step-single-flight.ts`: a per-copy map is not
single-flight. Two invocations reaching it through different layers would each
believe they were alone in the process and both run the step body, silently
degrading in-process dedup to the cross-process residual its own doc scopes out
to the ownership lease.

Also `@workflow/world` (a warn-once set, hand-rolled onto `globalThis` to keep
that package dependency-free), `@workflow/ai` (the lazy OTel API), and
`@workflow/nest` (bootstrap config in a module-level `let` and two static class
fields — configure one copy, read another, and the controller is unconfigured
for the life of the process).

Five sites are deliberately per-copy and now say why: state keyed on objects
that never cross copies (the barrier safety-net `WeakSet`, the QuickJS pending
byte `WeakMap`), the synchronously-scoped guest-code sink, and the OTel
diagnostic that reports what *this* copy sees.

The sweep now covers all of it. Packages with a single module graph stay out
(build-time code, the CLI, the o11y UI, the test runner) and AGENTS.md records
which and why.

Found while doing this: two static fields on one class collapsed into a single
entry in the rule, so `WorkflowModule.options` was invisible behind
`WorkflowModule.outDir`. Statics are now keyed `Class.field`.

* fix(world): suppress noAssignInExpressions on the globalThis idiom

The hand-rolled form trips Biome, as it does in `packages/core/src/private.ts`,
which carries the same suppression. Restructuring it into a helper function
instead would hide the state behind a call the module-scope rule cannot follow,
so the binding would stop being recognized as off-module and the package would
report a finding for correct code.

* fix: sweep every bundled package, and mark utils side-effect free

@shalabhc asked on review whether `@workflow/utils` needs this too. It does,
and so do three others: `utils`, `errors`, `serde` and `workflow` all end up in
the host application's server build and none were in the sweep. All four report
zero today, which is exactly the state `world-testing` appeared to be in before
the `.mts` walk was fixed and it turned out to have a real finding. Being clean
and being *checked* are different properties, and only the second one survives
the next contributor.

`sideEffects: false` on `@workflow/utils`: verified that every module in the
package only declares (no import-time work), so a bundler can now drop the
unused parts of the barrel instead of keeping all ~64 KB of it because three
packages import one 476-byte function.

---------

Signed-off-by: Pranay Prakash <pranay.gp@gmail.com>
Co-authored-by: Peter Wielander <mittgfu@gmail.com>
Co-authored-by: Kenneth <kenneth@standardforensics.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Peter Wielander <peter.wielander@vercel.com>
2026-08-21 16:55:24 -07:00
Peter Wielander b2cac623d3 [world] Make the sealed log opt-in instead of default-on (#3735) 2026-08-21 16:32:25 -07:00
Nathan Rajlich e1e64e3de3 docs: apply Vercel technical writing standards (#3704)
* docs: apply Vercel technical writing standards

Audit the complete documentation corpus, package READMEs, skills, and
source TSDoc/comments against the vercel-technical-writing skill and
style-rules.md. Normalize sentence-case headings without changing
published anchors, remove prose em dashes and filler wording, improve
active voice and self-contained phrasing, standardize product/brand
capitalization, American English, list punctuation, units, and code
fence languages, and preserve exact runtime strings/table placeholders.

All executable code is unchanged. Modified skills have their metadata
versions bumped.

* docs: extend writing audit to repository Markdown

Apply the same technical-writing rules to design documents, compiler
specifications, workbench guides, package changelogs, and the remaining
tracked Markdown outside the deployed docs corpus. Preserve historical
meaning, commands, output literals, table placeholders, and heading
anchors.

* docs: exclude generated package changelogs from audit
2026-08-21 14:24:31 -07:00
Pranay Prakash 7b79ba37cc Add support for 'noop' event type - spec version 7 (#3634)
Co-authored-by: Peter Wielander <peter.wielander@vercel.com>
2026-08-21 12:53:59 -07:00
Peter Wielander b3dbc6d264 [docs] v5 changes docs: what's new, world upgrade guide, migration skills (#3100) 2026-08-21 12:45:05 -07:00
Pranay Prakash 9454d51db0 feat(core): resolve run.returnValue via a World long poll instead of a 1s poll (#3570)
Co-authored-by: Peter Wielander <mittgfu@gmail.com>
Co-authored-by: Peter Wielander <peter.wielander@vercel.com>
2026-08-20 13:19:25 -07:00
Peter Wielander 0b2797bbac [next] Bundle the Vercel world into the Next.js server output (#3493) 2026-08-19 14:49:12 -07:00
Peter Wielander 04e060a0ec [world] Add WORKFLOW_NODE_HTTP to run the HTTP Worlds on node:http (#3461) 2026-08-18 14:31:08 -07:00
Peter Wielander de2a86c61c [world] Make spec version 6 the current version (#3542) 2026-08-14 10:22:21 -07:00
Peter Wielander dc85865718 [core] Drop pre-slot event ID support and preconditionGuard capability (#3519) 2026-08-13 15:57:28 -07:00
Shalabh Chaturvedi 01991edeeb feat(world-vercel): synthesize per-event client spans on the WS transport (#3452)
* feat(world-vercel): synthesize per-event client spans on the WS transport

PR #3084 added the opt-in `WORKFLOW_EVENTS_TRANSPORT=ws` path and listed
"no client-side span on the WS path" as a known limitation. Because event
writes become multiplexed frames on one long-lived socket rather than
individual `fetch` calls, the per-event `http POST` CLIENT span that the
HTTP transport produced simply disappeared — traces went from one span
per event to nothing between the invocation and the server.

Restore it by synthesizing a request-shaped span around each frame, and
give the upgrade its own span:

- Extract `withHttpClientSpan` / `recordClientSpanStatus` from
  `instrumentedFetch` in `http-core.ts` so the synthetic span is emitted
  by the same envelope as the real one and cannot drift from it.
  `InstrumentedFetchOptions` now extends `HttpClientSpanOptions`.
- `postEventFrameOverWs` opens `http POST` with `url.full` pointing at the
  v4 REST endpoint the frame is forwarded into, so per-event traces and
  latency dashboards keep working across the flag. Extract `eventsV4Url`
  so that URL cannot drift from the one the HTTP path actually requests.
- Tag both transports with `workflow.events.transport` (`http` | `ws`) and
  `workflow.event.type`; the WS path additionally sets
  `network.protocol.name=websocket`, `workflow.events.ws.url` (the real
  wire destination) and `workflow.events.ws.req_id` (join key to the
  server's log line for the frame), so the span is never mistaken for a
  real HTTP request.
- Add a `workflow.events.ws.connect` span around the upgrade — the one
  genuinely-HTTP request here, previously the invisible half of every WS
  write's latency — carrying `workflow.events.ws.reconnect_attempt`. This
  also puts `resolveUpgradeHeaders`' trace-context injection inside a
  client span, as AGENTS.md requires.
- Fix `parseServer` to treat `wss:` as TLS (port 443, not 80).

Out of scope, deliberately: per-frame `traceparent` (needs a frame-meta
field plus a server change) and Vercel's outgoing-requests view (that
instruments global `fetch`, so a frame structurally cannot appear there).

Covered by `ws-transport-spans.test.ts`, which drives the real selection +
transport + adapter stack over a fake socket and asserts span shape,
failure reporting, retry behaviour and HTTP/WS parity.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Co-Authored-By: shalabhchaturvedi-7802 <shalabh.chaturvedi@vercel.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* chore: trim WS spans changeset to the user-facing summary

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Co-Authored-By: shalabhchaturvedi-7802 <shalabh.chaturvedi@vercel.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* fix(world-vercel): only tag event-write spans with transport

Signed-off-by: Shalabh Chaturvedi <shalabh.chaturvedi@vercel.com>

Co-Authored-By: shalabhchaturvedi-7802 <shalabh.chaturvedi@vercel.com>

* fix(world-vercel): format WS transport span regression test

Signed-off-by: Shalabh Chaturvedi <shalabh.chaturvedi@vercel.com>

Co-Authored-By: Shalabh Chaturvedi <shalabh.chaturvedi@vercel.com>

---------

Co-authored-by: vercel[bot] <35613825+vercel[bot]@users.noreply.github.com>
2026-08-13 00:06:59 -07:00
Peter Wielander b589460ce8 [core] Report the replay position on every event write (#3479) 2026-08-12 13:08:18 -07:00
Peter Wielander 6786db9953 World-side incrementing event ID (specVersion 6) (#3389) 2026-08-11 09:06:53 -07:00
Shalabh Chaturvedi 264ddff67b Add WebSocket transport for step-execution event writes (opt-in) (#3084)
* sdk side for workflow server websockets

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* hardcoded workflow server

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* debug info

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* more debug

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* remove unnecessary debug

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* default on websockets, and override url

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* fix for missing funcs

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* make websockets opt outo

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* enable ws again

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* [revert later] reduce test to single test, test both http and ws at the same time

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* empty

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* Run full suite with and without ws

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* empty

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* improve e2e test

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* minimize tests

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* fallback to http when proxy present

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* default to websockets, remove matrix

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* remove smoke test

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* update to new protocol

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* adjust for new protocol (runid in path)

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* fix ws transport error

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* blank

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* fix ws dep

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* fix ws external: only accelerators, not ws itself

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* add dedicated WS-transport e2e job; flip WS default back to opt-in

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* build all packages before local vercel build (needs workflow/nitro on disk)

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* force NITRO_PRESET=vercel for the local vercel build step

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* install vercel CLI once instead of npx-ing it per command

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* add changeset for WS events transport

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* Harden the WS events transport and gate its e2e jobs

Follow-ups from review of the WS transport.

CI: `e2e-vercel-ws-transport` was wired into the `summary` job but not
into `e2e-required-check`, so all three WS jobs could fail while the
required check stayed green. Added to both branches of the status
validation — including the `workflow-server-test` label branch, where
the job runs under the same gating as `e2e-vercel-prod`.

Transport:

- `reqId` and the pending-reply map are now per connection rather than
  per transport. The protocol defines `reqId` as a per-connection
  counter, so a reconnected socket restarts at 1; with one shared map
  that collided with the previous socket's still-registered waiters.
  It also makes the superseded-socket guard structural instead of
  something the close path has to remember.
- Post-open socket errors are no longer silent. The only `'error'`
  listener closed over the connect promise's `reject`, already settled
  once `'open'` fired, so every broken pipe / 1009 / protocol fault was
  swallowed and its requests hung with no per-request timeout to save
  them. Now logged, and the connection is torn down.
- An unexpected close reconnects eagerly instead of waiting for the next
  write, since a socket breaking mid-run means more writes are coming.
  Bounded by exponential backoff, an attempt cap that falls back to
  lazy reconnect, a bail-out when a newer socket is already live, and an
  `unref()`ed timer so a backoff window can't delay handler exit.
- `ws.send()` failures reject their request. `send()` doesn't throw on a
  non-OPEN socket — it reports through a callback we weren't passing —
  so the request just sat in `pending` forever.
- The reserved `reqId: -1` malformed-frame reply and undecodable frames
  are logged loudly instead of dropped.
- Auth headers resolve once per socket via a thunk, not once per event.
  The bearer only rides the upgrade, so the old code awaited
  `getVercelOidcToken()` on every write and discarded all but the first.
  Re-resolving on reconnect also means a new socket gets a fresh token.

Adapter: a reply with no numeric status now fails closed. Defaulting to
200 reported a write as applied whenever the client met a frame it
didn't understand — and the protocol is explicitly designed to grow new
response variants.

Tests: 24 new unit tests over the paths the e2e suite can't reach on
demand (send failure mid-flight, error after open, late close from a
superseded socket, reconnect backoff and give-up, sentinel/undecodable
frame logging, one-token-per-socket) plus the adapter's fail-closed and
typed-error mapping.

Co-Authored-By: Shalabh Chaturvedi <shalabhc@users.noreply.github.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* ci: re-trigger to confirm the prior e2e failures were flake

No code change. The 5 failures on 0bb21e7 clustered in a ~20s window
across HTTP-path jobs (example/nuxt on the same test, sveltekit on a
timeout) and one WS job (sleepingWorkflow's clock-skew assertion), which
points at the environment rather than the transport changes. Re-running
to confirm.

Co-Authored-By: Shalabh Chaturvedi <shalabhc@users.noreply.github.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* Add WS wire-contract conformance tests and pin the transport gate

Three gaps in the existing coverage.

**The HTTP path was already covered** — `events-v4.test.ts` has 22 tests,
including five directly on `createWorkflowRunEventV4` over HTTP (alias
URL, frame meta contents, response decoding, skipPreload/stateUpdatedAt
forwarding). Those run with the gate unset, so they do confirm the
two-branch refactor didn't disturb HTTP. No new tests needed there.

**But nothing pinned the gate itself.** Every HTTP assertion stays green
if the default flips to WS, because the transports are built to be
indistinguishable at the result layer — and an earlier revision of this
branch did flip the default deliberately, for benchmarking. Added tests
for `isWsEventsTransportEnabled()` across values, and one that drives a
real HTTP request through a MockAgent while asserting the WS transport is
never constructed.

**Nothing verified the bytes.** `ws-transport.test.ts` replies with
whatever the test hands it, which proves the client's lifecycle but not
that its frames are what workflow-server accepts. That's the drift the
spec doc exists to prevent, and it already happened once: event meta flat
on the frame where the server wanted it nested under `event`, with both
sides' tests passing.

`ws-protocol-conformance.test.ts` pairs the real client stack (through
`createWorkflowRunEventV4`) with a fixture mirroring the server route's
per-message handling: decode one frame, validate against a local copy of
`WsRequestFrameSchema`, dispatch, encode the reply the way `replyMeta`
does. `experimental_upgradeWebSocket` needs a real Vercel runtime, so the
socket is faked — everything above it is genuine.

Covers: the frame shape the server accepts (and that `reqId`/`type`/
`runId` don't leak into the event meta), payload passthrough, exactly one
frame per message, 409 → the same typed error HTTP raises, fail-closed on
an unknown reply variant, and reqId correlation across concurrent writes.

Plus golden byte fixtures, since the schema copy is the one thing here
that can silently drift. This is the "golden-frame interop test" the
server spec lists as an open gap; the matching half still needs to land
in workflow-server.

Verified the conformance suite is not vacuous: flattening the client's
frame meta fails 5 of its tests.

Co-Authored-By: Shalabh Chaturvedi <shalabhc@users.noreply.github.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* match the HTTP RetryAgent's transient-failure policy on WS

HTTP event writes go through an undici RetryAgent (RETRY_AGENT_OPTIONS):
5xx and transient connection errors are retried in-process, honoring
Retry-After. The WS path never touches undici, so it shipped with no
transient-failure handling at all — a single 503 or a mid-write reset
surfaced straight to the step runtime and cost a whole step retry where
HTTP would have absorbed it in milliseconds.

That gap is invisible in a passing test run: writes still succeed, they
just cost far more. So copy the policy rather than reinvent it —
[500, 502, 503, 504] plus transport failures, undici's default backoff,
Retry-After honored, and 429 deliberately excluded for the same reason
RETRY_AGENT_OPTIONS excludes it (a firewall challenge this client cannot
solve, which in-process retries only amplify).

Adds WsTransportError so retryability is a typed property of the failure
rather than something the adapter infers by string-matching. Splits
resolveWsTransport()/wsReplyStatus() out of postEventFrameOverWs so the
retry loop stays readable.

The existing "fails closed on an error frame" test used status 500,
which is now absorbed by the retry — switched to 403 so it keeps
testing fail-closed rather than accidentally testing no-retry.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Co-Authored-By: Shalabh Chaturvedi <7066873+shalabhc@users.noreply.github.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* lazy-load `ws` so the default HTTP path never evaluates it

events-v4.ts imports ws-transport.js unconditionally — the transport
gate is a runtime branch, not a build-time one — so a top-level
`import { WebSocket } from 'ws'` put `ws` and its optional native
accelerators on the module-init path of every deployment, including the
overwhelming majority that never opt in and never open a socket.

Defer it to the first connect, memoized as a promise so concurrent
first connects share one import. WebSocket.OPEN becomes an inlined
constant so the readyState check doesn't pull the module in just to
read it off the constructor.

This does NOT remove the need for the bufferutil/utf-8-validate
externals this branch also adds: webpack and Rollup both statically
follow a dynamic import(), so the build-time story is unchanged. What
it buys is that a deployment which never enables the transport never
*evaluates* `ws`, so a mis-bundled accelerator can't break it.

The test lives in its own file because vitest caches a vi.mock factory
result for the life of the module registry — once any test in a file
has connected, the factory never runs again and the counter can't
distinguish "loaded lazily" from "loaded at import".

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Co-Authored-By: Shalabh Chaturvedi <7066873+shalabhc@users.noreply.github.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* release idle WS transports instead of renewing them forever

The transports map was never pruned and WsEventsTransport had no way to
close. Combined with eager reconnect that made a connection immortal by
construction: the server drains at its own maxDuration and closes, the
client immediately reopens, and the server pins a fresh invocation — for
a run that finished long ago. A warm container ended up holding a live
socket, and a live server invocation, for every runId it had ever
served. workflow-server#683 already lists "one invocation stays resident
per run rather than per write" as a known gap; this made it "per run,
forever".

Add close() plus a 60s idle release. There is no "run complete" signal
to hang teardown off — the events adapter is a stateless per-write call
— so idleness is the available proxy. 60s sits well below the server's
~680s drain deadline, so the client releases rather than the server
reclaiming, and well above the gap between steps of an active run.

scheduleReconnect() now bails when closed: close() closes the socket,
which fires the same close handler an unexpected drop would, and without
the guard the transport would instantly reconnect what it just released.

request() revives an idle-closed transport rather than failing the
write, re-registering itself only if nothing newer has claimed the map
slot. Eviction therefore costs one handshake, not an error.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Co-Authored-By: Shalabh Chaturvedi <7066873+shalabhc@users.noreply.github.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* refresh the bearer on an auth_expiry drain

workflow-server#683 tags a drain frame with why it is closing:
max_duration means the socket aged out and a plain reconnect is right,
auth_expiry means the *bearer* ran out and reconnecting with the same
one just earns a 401. This client logged the drain and ignored the
reason, so against #683 an auth_expiry drain would burn all five
reconnect attempts against a token the server had already rejected, then
give up.

Parse the reason (absent reads as max_duration, so this stays correct
against the currently-deployed server) and thread forceRefresh through
the getHeaders thunk, which triggers @vercel/oidc's refresh path via a
wide expirationBufferMs.

Worth being precise about when that can actually help. getVercelOidcToken
resolves getContext().headers['x-vercel-oidc-token'] ?? env, and
refreshToken() only writes the env var — the request-context header
wins. So inside a deployed function there is genuinely no fresher token
mid-invocation and the refresh is a no-op; outside one (CLI, local dev,
a long-lived server) it works.

That makes the guard the load-bearing half: if the re-resolved bearer is
byte-identical, decline to reconnect, say so, and wait for the next
write — which usually arrives on a new invocation carrying a new token.
That failure is marked non-retryable so the retry loop doesn't spin on
it either.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Co-Authored-By: Shalabh Chaturvedi <7066873+shalabhc@users.noreply.github.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* document the WS path's instrumentation gap

The HTTP branch goes through fetchV4 -> instrumentedFetch, which is not
just a fetch wrapper: it opens the OTEL CLIENT span, injects trace
context, sets the cache-bust header, emits the DEBUG logs, and routes
through the global fetch that Vercel's observability "outgoing requests"
view instruments. The comment on fetchV4 records why that matters —
bypassing it via undici.request() is exactly what once made v4 event
traffic disappear from the log viewer.

The WS branch bypasses all of it. With the flag on, per-event writes
have no client span, propagate no trace context to workflow-server, and
don't appear in the outgoing-requests view; the server's own
transport-tagged request metrics are the only remaining signal.

That's acceptable for an opt-in POC behind a flag and unacceptable as a
default, so write it down where someone deciding to flip the default
will read it: instrumenting the transport is a prerequisite for that,
not a follow-up nicety.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Co-Authored-By: Shalabh Chaturvedi <7066873+shalabhc@users.noreply.github.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* ship the ws-accelerator externals instead of documenting a workaround

`bufferutil` and `utf-8-validate` are optional native accelerators for
`ws`, and neither is installed by default. Every bundler has to be told
to leave them alone, for two different reasons: Rollup/Vite/Nitro fail
the build outright (`Could not resolve "bufferutil" imported by "ws"`),
while webpack bundles the JS wrapper without its native `.node` binding
and throws `bufferUtil.mask is not a function` at runtime.

The webpack half shipped in `@workflow/next`. The Rollup half only
existed in `workbench/vite` and `workbench/tanstack-start` as
`nitro.rollupConfig.external` — app configs, not shipped code. So a real
user of `@workflow/vite`, `@workflow/nitro`, `@workflow/nuxt`,
`@workflow/sveltekit` or `@workflow/astro` hit the same build failure the
workbench had already worked around, and had to rediscover the fix.

Fix it where it propagates: `workflowTransformPlugin` in
`@workflow/rollup`, which all of those integrations already install. It
is already the home of exactly this pattern for the optional
`@opentelemetry/api` peer, so this sits next to its closest precedent.

Note the treatment is deliberately the inverse of the OTEL one, which is
externalized only when it *can't* be resolved. The OTEL API must load
for tracing to work, so a self-contained output has to bundle it when
present. These accelerators must specifically NOT load — they are a
performance nicety with a correct try/catch fallback in `ws` — so
unconditional external is both simpler and safer than risking a
half-bundled native module.

The two workbench configs drop their local copies, which is what proves
the shipped fix actually works rather than being masked by them.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Co-Authored-By: Shalabh Chaturvedi <7066873+shalabhc@users.noreply.github.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* one retry policy for both transports, and no unanswerable waiters

Two review findings on the WS events transport.

**Retry belongs to `event-retry.ts`, not the adapter.** The WS path had its
own retry loop, justified as mirroring undici's `RetryAgent`. That
justification was wrong: `RetryHandler` defaults `methods` to GET/HEAD/
OPTIONS/PUT/DELETE/TRACE and nothing overrides it, so the `RetryAgent` never
retried an event POST on either transport — which is precisely why
`event-retry.ts` exists.

Worse, that loop sat *inside* `withEventPostRetry`, so it defeated a
compile-checked safety gate: `EVENT_RETRY_ELIGIBILITY` marks `step_started`,
`step_retrying` and `hook_received` non-retryable (a replayed `step_started`
double-increments `attempt`), and those frames were re-sent up to five times
before the gate ever saw a failure. For eligible types the two loops
multiplied: 3 outer attempts x 6 inner, with an inner backoff reaching 30s
against an outer base deliberately set to 100ms.

`postEventFrameOverWs` now makes one attempt and translates failures into the
vocabulary that policy already speaks — a transport failure becomes a
`WorkflowWorldError` with `code: 'TRANSPORT'`, exactly as `utils.ts` does for
a failed `fetch`, and `isRetryableEventPostError` gains one clause keyed on
that code. `WsTransportError` loses its `retryable` flag; its only consumer
was the deleted loop.

Two deliberate consequences. The code-keyed clause broadens HTTP in-process
retry to `UND_ERR_CONNECT`, `UND_ERR_CLOSED` and `EAI_AGAIN`, which were in
utils.ts's transient set but missing from event-retry.ts's — two
hand-maintained lists collapsed into one semantic code. And the stale-token
case (drain for auth expiry, refresh yields the same bearer) now gets two
in-process attempts that cannot succeed, ~300ms before it falls through to
queue redelivery; that is cheaper than keeping a WS-specific policy alive for
one call site. `TIMEOUT` is deliberately not in the clause: utils.ts maps a
caller-supplied `AbortError` onto it, and a cancelled write must not be
re-issued.

A status-less reply also stops being a bare `Error` — as one it failed
`WorkflowWorldError.is()` and surfaced a protocol version skew as a
USER_ERROR. It is now `code: 'PARSE_ERROR'`, the same code utils.ts uses for
an unreadable HTTP body, and for the same reason: the write may or may not
have landed.

**No waiter is left unanswerable.** An undecodable frame, the server's
malformed-frame sentinel (`reqId: -1`) and a non-numeric `reqId` were logged
and dropped. None can be correlated by construction, so the request that
provoked them stayed in `pending` with nothing in existence able to settle it
— freed only by the server's own drain (~680s from connect), typically past
the invocation's `maxDuration`. Each now fails the connection: every waiter
learns why, and the socket is replaced. A reply for an id nobody is waiting
on stays log-and-drop, deliberately — that request already settled, so
nothing is orphaned, and failing the socket would punish healthy in-flight
writes.

A per-request deadline backs that up for whatever is left, including a server
that accepts a frame and never answers it. Same knob as the HTTP path
(`WORKFLOW_REQUEST_TIMEOUT_MS`, 60s), whose doc comment already describes
this exact hang-to-SIGTERM pathology.

One existing idle-teardown test needed the deadline raised: the idle window
and the default deadline are both 60s, so a request could not outlive the
former without also outliving the latter. The test is about `inFlight > 0`
suppressing the teardown, so it now sets the deadline out of the way.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* Open the ws socket when the invocation starts, not on its first write

Lazily connecting bills the whole handshake — an upgrade round-trip plus the
OIDC token mint that rides it — to whichever event a fresh invocation writes
first. When that is a `step_started` issued as the step body is already
running, the event's server-recorded timestamp lands later than the work it
describes: the step looks shorter than it was. That is the shape of the e2e
timing failure on this branch, where a 9s step measured 6.5s from
`getStepMetadata().stepStartedAt`.

The queue handler is the earliest point that knows the run id, and a message
delivered for a run means writes are coming, so `warmWsEventsTransport` starts
the handshake there. By the first write it is done or in flight, and the write
just uses it.

Nothing about it is load-bearing:

- It doesn't await, and can't fail the handler. A warm that fails logs and
  stops — a never-opened first connect is precisely the case `connect`'s close
  handler already declines to retry, so no backoff loop starts for a run that
  may never write. The first real write connects as it would have anyway,
  carrying the shared retry policy.

- No-op unless `WORKFLOW_EVENTS_TRANSPORT=ws`, and no-op for the api-workflow
  proxy World, which can't serve an upgrade at all — the same fallback the
  write path takes.

- Warming arms the idle timer as if a request had settled, so an invocation
  that warms and never writes (a health probe carrying the run id it is about
  to create) releases its socket on the usual 60s rather than stranding it.
  The socket is not `unref`'d, so a stranded one would hold this process and a
  server invocation open.

Also closes a race that warming makes reachable: `close()` can only drop the
connection it can see, so a release landing mid-handshake left the socket to
install itself afterwards onto a transport already evicted from the cache,
which nothing would then ever close. The `open` handler now declines to adopt
a socket whose transport was released while it was connecting. This was
already reachable via the eager reconnect path, just much harder to hit.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* changeset: just the env var

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* inline the ws-accelerator predicate at its only call site

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* refactor(world-vercel): trim ws-transport comments

Comments were 47% of the file. Cut the historical narration, the
restatements of adjacent code, and the repeated rationale (the `unref`
reasoning appeared four times, per-connection reqId three), keeping the
non-obvious facts: `ws.send()` reports failure via callback instead of
throwing, reqId is per-connection so `pending` must be too, the
unknown-reqId case is deliberately non-fatal, the auth_expiry same-token
bail-out, and why the idle timeout exists at all.

No code changes.

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* own transport selection in the transport module

`events-v4.ts` was assembling the WS transport itself: reading the opt-in
flag, resolving the URL, deciding which Worlds can use a socket, minting the
per-connection header thunk, and holding the two once-per-process log latches.
None of that is about turning an event into a frame, which is what the rest of
that file does. Move it next to the socket it configures — `events-v4.ts` now
consumes one seam (`resolveWsTransport`) plus the gate, and `queue.ts` gets
`warmWsEventsTransport` from the module that owns the warm.

`headersToRecord` now lives in `http-core.ts` because both callers need it and
neither may import the other: `events-v4` already depends on the transport, so
the reverse edge would be a cycle.

Test fallout, and the reason the move is worth it: `events-v4-ws.test.ts`
mocked `getWsEventsTransport` to observe the resolve step, which no longer
intercepts anything now that the call is intra-module — an ESM mock replaces a
module's exports, not its own call sites. That mock's tests were only ever
about selection, so they move to `ws-transport.test.ts`, where the real
selection code runs against the existing fake-socket harness instead of a
stub. `resetWsEventsTransportsForTest` clears the log latches so the
once-per-process assertions don't depend on test order. What stays behind
mocks `resolveWsTransport` and covers what that file is actually for: reply
frame in, `Response`-shaped result out — including the null-resolve fallback to
HTTP, which nothing covered before.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* import `ws` statically

The lazy `import('ws')` was there to keep the package off the module-init path
of deployments that never opt in — `events-v4.ts` imports this module
unconditionally, since the transport gate is a runtime branch. Measured, that
buys ~17ms: `require('ws')` is 16.5-18.0ms cold, 13 modules, and neither
`bufferutil` nor `utf-8-validate` loads (optional peers, absent by default).
Bundle size is identical either way — webpack and Rollup both statically follow
a dynamic `import()`, which is why the externals in `@workflow/builders` are
unaffected by this change.

For 17ms it cost a memoized promise, an inlined `WS_READY_STATE_OPEN` (so a
readyState check wouldn't force the module to load just to read a constant off
the constructor), and a whole test file — `ws-transport-lazy.test.ts` had to
live alone, because vitest caches a `vi.mock` factory result for the lifetime
of a module registry, so only a file that connects exactly once can observe
the laziness at all.

It also skewed the thing this branch exists to measure. The import lands inside
the first connect, so on a warm container it is billed to whichever event write
opens the socket, inflating the timestamp of the step it labels — the same
distortion the queue pre-warm was added to remove.

Also drops `WS_READY_STATE_OPEN` in favour of `WebSocket.OPEN`, now that
reading it is free.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* tighten the comments on the ws transport

Comments only — no code changes in this commit.

Cuts ~150 lines of prose across the WS additions. The rule applied: keep the
design factors a future reader needs (why the connection is scoped to a run,
why a bad reply takes the socket down, why the accelerators are externalized
unconditionally, why `TIMEOUT` is excluded from the `TRANSPORT` classification)
and drop the narrative of how the code got here — which revision did what, what
an earlier attempt got wrong, what was measured on the way. That history lives
in the PR and the git log, where it doesn't have to be re-read on every visit
to the file.

Biggest reductions: the retry essay above `postEventFrameOverWs` (30 lines to
11), the flag's OTEL-gap note (34 to 13), the OIDC refresh explainer (26 to
14), the accelerator rationale in `@workflow/builders` (26 to 14), and the
conformance suite's header (28 to 17).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* inject W3C trace context on the ws upgrade

Frames carry no headers, so the upgrade is the only place this transport can
propagate context; the server parents a run's event spans to whichever
invocation opened the socket. Covered in trace-propagation.test.ts, both with
and without an active span.

Splits the opt-in gate into an import-free ws-transport-enabled.ts so callers
can answer it without loading this module (used by the next commit).

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* load the ws transport module only when it is enabled

Both call sites read the gate from the import-free module and dynamically
import ws-transport.js behind a true result, so a deployment on the HTTP
default never pays ws's ~17ms of module init. The queue pre-warm absorbs it
for one that opted in, keeping it off the first event write.

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* document WORKFLOW_EVENTS_TRANSPORT as experimental

Names the instrumentation gap (no client span per write) and the proxy path
where the variable is ignored.

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* correct why the ws accelerators are externalized

No bundler fails the build on the unresolvable require — verified against
Rollup 4.62. webpack half-bundles the native module and Vite substitutes a stub
that makes the require succeed; both leave bufferUtil.mask undefined and throw
only once a frame reaches the native masker at 48 bytes, which every CBOR event
frame does. Same claim was repeated in the rollup plugin and its test.

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* trim the WORKFLOW_EVENTS_TRANSPORT docs to user level

Mirrors the other Vercel World env vars: same facts on both pages, each in its
page's format. The instrumentation and socket-lifetime detail belongs in the
code, not in a user-facing reference.

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* cover the vite bundler in the ws transport lane

Vite substitutes a stub for ws's absent native accelerators rather than failing
the require, so nothing catches it until a masked frame reaches 48 bytes — and
this job's three existing lanes are esbuild, turbopack and nitro.

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* claim only what is measured about rollup and the ws accelerators

The rationale asserted plain Rollup was "safe by accident" via a mechanism
only ever observed in a minimal repro. Nitro traces and externalizes `ws` in
a production build, so the bundled path is not reached there at all.

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* Give the events socket an explicit lifetime instead of an idle timer

`openWsChannel` / `closeWsChannel` bracket one invocation of the flow
route, and are the only calls anywhere that create a channel. Writes ask
`resolveWsTransport` whether one is open — a lookup now, never a create —
and take pooled HTTP when it says no.

That removes the reason the idle timeout existed. A lazily-created socket
has no owner, so a timer was the only thing able to end it, and the socket
is not `unref`'d: the process could not exit, and a server invocation
stayed pinned, for the full window past the last write.

It also settles `run_created`. The trigger path opens no channel, so a
lone write no longer pays for a handshake it cannot amortize — `start()`
runs in an arbitrary request handler with no boundary the SDK can see.

Refcounted rather than a flag: inline step executions ride the flow topic
on per-step topics, so a run's steps can be concurrent invocations in one
instance sharing the channel, and the first to finish must not cut the
others short. A failed connect closes the channel so the invocation's
writes fall back to HTTP instead of each paying its own doomed handshake.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* Name the one reply header the WS path does not map

The server copies six headers into an `event_ack`'s meta and this record
maps five. The sixth, `X-API-Deprecated`, is inert today — the v4 route's
middleware chain has no deprecation middleware to set it — but the record
is the only header source a WS reply has, so an unmapped key is gone
rather than merely unread, which is not true of the `Response` the HTTP
path returns.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* docs: note that WORKFLOW_EVENTS_TRANSPORT=ws is ignored on the proxy path

The api-workflow proxy is an HTTP-only REST gateway and does not forward
a WebSocket upgrade, so a World configured with projectConfig keeps
writing events over HTTP regardless of the setting.

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* ci: gate the ws-transport e2e lanes on a label

Three real `vercel deploy`s per run is too much to charge every
unrelated PR in the repo for a transport that is off by default. PRs opt
in with `ws-transport-test` (or `workflow-server-test`, which already
exists to test the half of this the protocol lives in); main keeps the
signal on every commit.

The required aggregate has to allow the lane to be skipped in that case,
so its status is asserted only when the lane was actually supposed to
run.

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* chore: regenerate pnpm-lock against current main

main resolved `ws` to 8.20.0 as a transitive peer; this branch adds it
as a direct dependency of world-vercel and floats it forward, which
rewrites every `openai@x(ws@y)` peer key in the lockfile. Merging main
textually combined the two, leaving those keys pointing at a `ws` entry
the merged file no longer had — `--frozen-lockfile` then failed with
ERR_PNPM_LOCKFILE_MISSING_DEPENDENCY on the PR's merge ref.

Regenerated from main's lockfile so ours is a minimal delta on top of it.

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* fix(world-vercel): align ws on the version main already resolves

The lockfile broke on the PR's merge ref, not on this branch's head: main
resolves ws@8.20.0 as a transitive peer, and a `^8.21.1` direct dep here
floated it forward, rewriting all 73 `(ws@8.20.0)` peer keys. Git merged
the two lockfiles without a conflict but left main-side keys pointing at
a ws entry the merged file no longer had, so `--frozen-lockfile` failed
with ERR_PNPM_LOCKFILE_MISSING_DEPENDENCY.

`^8.20.0` resolves to the copy main already has, so the lockfile delta is
the two importer entries instead of a repo-wide rewrite that re-breaks
every time main moves. Also keeps one ws in the store rather than two.

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* Bind the channel release to the instance it claimed

closeWsChannel resolved the transport by URL, but the refcount lives on
the instance. A channel is evicted from the map as soon as it closes — a
refused upgrade does that on the connect path — so the next opener for
the same run registers a different instance under the same URL, and the
first invocation's close then decremented that one instead. It dropped a
socket a live invocation was still writing over, and for the event types
EVENT_RETRY_ELIGIBILITY marks non-retryable there is no second attempt to
carry the in-flight write over HTTP.

openWsChannel now returns an idempotent release closed over the transport
it incremented, and queue.ts holds that instead of re-resolving the run.
The close awaits the open's own promise, so it also can no longer land
ahead of the claim it releases.

Also names the scope of the connect-failure de-opt: it covers the
handshake only, so a channel that connects and then fails every write
keeps taking the WS path.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* Decode a transport result, not a Response

Main extracted the v4 POST decode into a helper typed `Response` while this
branch narrowed the POST result to `FrameResponseLike`, because the WS branch
synthesizes its result rather than holding a real `Response`. The two merge
without a textual conflict and then fail to typecheck.

Widen the helper: it reads only the two members `FrameResponseLike` declares,
and a `Response` still satisfies them, so the HTTP call sites are unchanged.

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* Re-run CI

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* Re-run CI

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* Reconcile the WS transport with main's v4 POST rework

main moved the materialized POST result off the `x-wf-*` response headers
and onto a typed CBOR body, and added a second response shape: two callers
now POST with `Accept: application/vnd.workflow.v4-frames` and read back a
sentinel-terminated sequence of frames.

A frame stream has no representation in a protocol that pairs one reply
frame with one request frame, so the WS switch moves off the shared poster
and onto `createWorkflowRunEventV4` alone — the materialized write, which is
the hot per-step path this branch exists to shorten. `run_started` and the
`hook_received` preload stay on HTTP.

`decodeCreateEventResponse` takes `FrameResponseLike` rather than `Response`
because the WS branch has none to hand over; a real `Response` satisfies the
interface, so the HTTP callers are unchanged. The ids now come out of the
CBOR body, so `replyMetaToHeaderRecord` no longer maps any `x-wf-*` name —
only the two headers `errorFromV4Response` reads.

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* Re-run CI

Resample the WS-arm sleepingWorkflow failure: it has now recurred on a second
axis (nextjs-turbopack, 7709ms; previously vite, 7570ms), so the arm needs
more samples before the skew can be called WS-specific or repo-wide flake.

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* Re-run CI

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* Re-run CI

Co-Authored-By: shalabhc <shalabh.chaturvedi@vercel.com>

* blank

* blank

---------

Co-authored-by: vercel[bot] <35613825+vercel[bot]@users.noreply.github.com>
2026-08-09 17:34:44 -07:00
Nathan Colosimo 4bb86d3054 feat(world-vercel): support Hook minimum retention (#3286)
* feat(world-vercel): support Hook minimum retention

* fix(core): fail deterministic Hook validation
2026-08-07 13:00:52 -07:00
Nathan Colosimo 99f4aeb03d feat(world-postgres): support Hook minimum retention (#3276)
* feat(world-postgres): retain hook tokens after runs end

* refactor(world-postgres): reuse terminal run statuses

* docs: note Postgres Hook retention support

* fix(world-postgres): expose hook retention deadline

* Fix: Exhaustive `Record<AttributeKey, ...>` in `attribute-panel.tsx` is missing the `tokenRetentionUntil` key that was added to `HookSchema`, causing TS2741 and breaking every Vercel build.

This commit fixes the issue reported at packages/web-shared/src/components/sidebar/attribute-panel.tsx:426

## Bug

Commit `ad58321` added `tokenRetentionUntil: z.coerce.date().optional()` to `HookSchema` in `packages/world/src/hooks.ts:106`. This adds `tokenRetentionUntil` to the inferred `Hook` type.

In `packages/web-shared/src/components/sidebar/attribute-panel.tsx`, `AttributeKey` is a union that includes `keyof Hook`, so `tokenRetentionUntil` becomes a required member of the **exhaustive** `Record<AttributeKey, (value: unknown, context?: DisplayContext) => ...>` object literal `attributeToDisplayFn` (starting at line ~426).

Because the literal had no `tokenRetentionUntil` entry, `tsc` fails:

```
src/components/sidebar/attribute-panel.tsx(426,7): error TS2741:
Property 'tokenRetentionUntil' is missing in type '{ ... }' but required in type
'Record<AttributeKey, (value: unknown, context?: DisplayContext | undefined) => ReactNode>'.
```

This breaks `@workflow/web-shared#build` and therefore every Vercel deployment (17 failing deployments observed, all with this identical error).

## Fix

Added a `tokenRetentionUntil` entry to `attributeToDisplayFn`, placed alongside the other Hook date fields (`lastReceivedAt`, `disposedAt`):

```ts
tokenRetentionUntil: timestampWithTooltipOrNull,
```

`tokenRetentionUntil` is a `Date` field, and `timestampWithTooltipOrNull` (defined at line 402) is the display helper used by all the other surfaced date fields (`createdAt`, `startedAt`, `completedAt`, `retryAfter`, `resumeAt`, `occurredAt`). Given the intent of `ad58321` was to expose the hook retention deadline, surfacing it as a tooltip-annotated timestamp is the consistent choice.

Only `attributeToDisplayFn` is a fully exhaustive `Record<AttributeKey, ...>`; the other maps are `Partial<...>` / `Set`, so no other edits are required.

## Verification

`node_modules` are not installed in this sandbox, so `tsc` could not be executed directly. Verified structurally instead: the newly added `tokenRetentionUntil` entry (line 449) references `timestampWithTooltipOrNull`, which is defined in-file at line 402 and already used by the sibling date entries, so the fix satisfies the missing-key requirement without introducing new type errors.

Co-authored-by: Vercel <vercel[bot]@users.noreply.github.com>
Co-authored-by: VaguelySerious <mittgfu@gmail.com>

* docs(world-postgres): clarify expired hook rows

* feat(world-postgres): enforce Hook retention limit

* fix(world): remove duplicate Hook retention field

* fix(web-shared): remove duplicate retention renderer

* test(world): remove redundant retention coercion case

---------

Co-authored-by: vercel[bot] <35613825+vercel[bot]@users.noreply.github.com>
Co-authored-by: Vercel <vercel[bot]@users.noreply.github.com>
Co-authored-by: VaguelySerious <mittgfu@gmail.com>
2026-08-03 17:42:31 -07:00
Nathan Colosimo e6f1b6f548 feat(world-local): support Hook minimum retention (#2866)
* feat(core): add hook token retention contract

* refactor(core): constrain hook retention options

* fix(core): preserve boolean hook visibility options

* revert(core): preserve HookOptions interface

* docs(core): clarify retained conflict ownership

* docs(core): retain newest-wins conflict pattern

* docs(core): simplify hook retention guidance

* docs(core): explain retained token cleanup

* docs(core): simplify idempotency guidance

* docs(core): clarify retained token results

* refactor(core): rename hook token expiration option

* chore(core): name hook expiration changeset

* docs(core): simplify Hook expiration language

* docs(core): clarify Hook expiration deadline

* docs(core): remove Hook deadline caveat

* refactor(core): align Hook expiration field names

* docs(core): narrow Hook expiration documentation

* docs(core): clarify hook expiration availability

* Update packages/core/src/workflow/hook.ts

Co-authored-by: Peter Wielander <mittgfu@gmail.com>
Signed-off-by: Nathan Colosimo <110621881+NathanColosimo@users.noreply.github.com>

* docs(core): clarify Hook token expiration behavior

* docs(core): explain active Hook expiration behavior

* feat(world): advertise hook ttl capability

* fix(core): validate hook ttl capability after main merge

* refactor(core): rename hook expiry to minimum retention

* docs: keep hook retention guidance on v5

* docs: define retained run availability

* fix(core): validate Hook retention at creation

* feat(core): define retained Hook lookup semantics

* refactor(core): simplify hook retention checks

* feat(world-local): support Hook token expiration

* fix(world-local): make hook recovery atomic

* refactor(world-local): align Hook minimum retention

* fix(world-local): preserve Hook creation order

* fix(world-local): expose retained Hooks consistently

* refactor(world-local): simplify retained hook storage

* fix(world-local): allow stale lock recovery

* refactor(world-local): simplify hook retention storage

Signed-off-by: Nathan Colosimo <110621881+NathanColosimo@users.noreply.github.com>

* fix(world-local): serialize expired hook token handoff

Signed-off-by: Nathan Colosimo <110621881+NathanColosimo@users.noreply.github.com>

* fix(world-local): preserve hook creation order

Signed-off-by: Nathan Colosimo <110621881+NathanColosimo@users.noreply.github.com>

* refactor(world-local): clarify hook availability cleanup

* docs: note Local World Hook retention support

* fix(world-local): harden hook retention persistence

* fix(web-shared): render hook retention deadline

* fix(world-postgres): exclude unsupported hook retention

* feat(world-local): enforce Hook retention limit

* docs(world-local): clarify retention limit error

* docs(world): clarify Hook retention deadline

* docs(hooks): link retention configuration

---------

Signed-off-by: Nathan Colosimo <110621881+NathanColosimo@users.noreply.github.com>
Co-authored-by: Peter Wielander <mittgfu@gmail.com>
2026-08-03 17:42:31 -07:00
Peter Wielander 1471f252fa [core] Gate event creation on the loaded event count and restart replays in-process (#3145) 2026-07-31 14:27:43 -07:00
Andrew Barba 2677653759 fix(world-local): bound stalled queue deliveries (#3255)
Signed-off-by: Andrew Barba <barba@hey.com>
2026-07-31 08:27:35 -07:00
Nathan Colosimo 62d570ed4b Remove retired v1 step route plumbing (#3061) 2026-07-24 23:50:55 +00:00
Karthik Kalyan fc81f4502f perf(core): immediate leading-edge dispatch for idle streams (flush window default 0) (#3088)
* perf(core): immediate leading-edge dispatch for idle streams (flush window default 0)

Production producer-rate data (24h of client flush spans): most agents
average 1.03-1.21 chunks per flush with 87-98% single-chunk flushes and
>70% of chunks arriving more than 10ms after the previous request had
already settled — a fixed 10ms leading window batches almost nothing
for them while adding ~20% to isolated-chunk publish latency (~50ms
median RTT). The one bursty producer (avg ~4-8 chunks/flush) gets its
batching from in-flight accumulation, which does not depend on the
window at all.

The leading chunk of an idle sink now dispatches immediately by
default (window 0): first chunk goes out at once, chunks arriving
during its request coalesce into the next group, and each settle
dispatches the accumulated group immediately — path-independent
batching with no fixed tax on slow producers. A positive
WORKFLOW_STREAM_FLUSH_INTERVAL_MS (or world.streamFlushIntervalMs,
applying from the second group) opts into a windowed leading edge for
slow-but-steady producers that prefer larger groups over first-chunk
latency. Early-ack, the durability drain barrier, wire caps, and
backpressure bounds are unchanged.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Update packages/world/src/interfaces.ts

Co-authored-by: Peter Wielander <mittgfu@gmail.com>
Signed-off-by: Karthik Kalyan <105607645+karthikscale3@users.noreply.github.com>

* review: env var overrides world streamFlushIntervalMs; world option governs the leading edge too

WORKFLOW_STREAM_FLUSH_INTERVAL_MS, when set, now takes precedence over
world.streamFlushIntervalMs; otherwise the world option applies from the
very first chunk (no more second-group lazy quirk). Deciding waits for
the world when needed, which adds no latency: sendGroup awaits the same
promise before any request can leave.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Signed-off-by: Karthik Kalyan <105607645+karthikscale3@users.noreply.github.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Co-authored-by: Peter Wielander <mittgfu@gmail.com>
2026-07-24 12:29:28 -07:00
Joey Hotz cdb3db4049 fix(world-postgres): abort stalled HTTP delivery on shutdown (#3064)
Signed-off-by: Joey Hotz <joeyhotz1@gmail.com>
2026-07-23 19:53:12 -07:00
Nathan Colosimo a5e6f1167a feat(core): add experimental Hook minimum retention (#2865)
* feat(core): add hook token retention contract

* refactor(core): constrain hook retention options

* fix(core): preserve boolean hook visibility options

* revert(core): preserve HookOptions interface

* docs(core): clarify retained conflict ownership

* docs(core): retain newest-wins conflict pattern

* docs(core): simplify hook retention guidance

* docs(core): explain retained token cleanup

* docs(core): simplify idempotency guidance

* docs(core): clarify retained token results

* refactor(core): rename hook token expiration option

* chore(core): name hook expiration changeset

* docs(core): simplify Hook expiration language

* docs(core): clarify Hook expiration deadline

* docs(core): remove Hook deadline caveat

* refactor(core): align Hook expiration field names

* docs(core): narrow Hook expiration documentation

* docs(core): clarify hook expiration availability

* Update packages/core/src/workflow/hook.ts

Co-authored-by: Peter Wielander <mittgfu@gmail.com>
Signed-off-by: Nathan Colosimo <110621881+NathanColosimo@users.noreply.github.com>

* docs(core): clarify Hook token expiration behavior

* docs(core): explain active Hook expiration behavior

* feat(world): advertise hook ttl capability

* fix(core): validate hook ttl capability after main merge

* refactor(core): rename hook expiry to minimum retention

* docs: keep hook retention guidance on v5

* docs: define retained run availability

* fix(core): validate Hook retention at creation

* feat(core): define retained Hook lookup semantics

* refactor(core): simplify hook retention checks

* docs(core): simplify retained conflict example

* docs(core): flatten forward-to-owner example

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Signed-off-by: Nathan Colosimo <110621881+NathanColosimo@users.noreply.github.com>
Co-authored-by: Peter Wielander <mittgfu@gmail.com>
2026-07-21 15:35:55 +07:00
Pranay Prakash 8a872529fe docs: make /worlds the canonical home for World docs (#2934)
* docs: make /worlds the canonical home for World docs

The world pages (Local/Postgres/Vercel) and Building a World were
duplicated inside the v4 and v5 docs trees while /worlds/[id] rendered
the v4 copy — hiding v5-only content like multi-region and leaving two
diverging sources of truth.

- Move world docs to an unversioned docs/content/worlds/ collection
  (based on the v5 copies, with inline 4.x callouts for factory naming
  and 5.x-only env vars), rendered at /worlds/*
- Add /worlds/building-a-world; flatten the docs Deploying section to a
  single intro page and drop its Rocket icon
- Point every link, frontmatter ref, and worlds-manifest docs field at
  /worlds/*; add redirects for the removed v5 and building-a-world URLs
- Keep world docs on agent-facing surfaces: search, llms.txt,
  sitemap.md/.xml, and .md exports now serve the worlds collection
- Extend the docs link linter to validate worlds pages (with heading
  anchors) and their outgoing links

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Signed-off-by: Pranay Prakash <pranay.gp@gmail.com>

* docs: version the world docs like the docs trees (v4/v5 switcher)

Instead of a single unversioned copy, world docs now follow the same
versioning strategy as the docs pages: content/worlds/v4 is served at
/worlds/* (current) and content/worlds/v5 at /v5/worlds/*, restoring the
original per-version content. Each world detail page (and Building a
World) renders the docs version switcher — the worlds listing page has
no natural home for it, so it lives on the world pages themselves.

- Render-time href rewriting on v5 pages now covers /worlds/... links
  (shared rewriteHrefForVersion helper, also used by the v5 docs and
  cookbook routes), and the markdown-export rewrite does the same
- v5 world pages are noindexed with a canonical to /worlds/<id>;
  community worlds stay unversioned (/v5/worlds/<id> redirects)
- /v5/docs/deploying/world/* redirects now land on /v5/worlds/*;
  /v5/worlds and /v5/worlds/compare redirect to the unversioned pages
- Link linter models the versioned worlds URL spaces (v5 pages resolve
  /worlds hrefs against the v5 collection); sitemap.md and the .md
  export routes cover /v5/worlds/*

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Signed-off-by: Pranay Prakash <pranay.gp@gmail.com>

* docs: fix v4 multi-region anchor and tighten version-prefix matching

Address PR review:
- The v4 Deploying page linked /worlds/vercel#multi-region, but the
  Multi-region section only exists on the v5 world page; use the
  explicit cross-version /v5/worlds/vercel#multi-region link (this was
  the Docs Links CI failure)
- rewriteHrefForVersion now uses the boundary-checked hasPathPrefix
  (shared leaf module lib/geistdocs/path-prefix.ts, also used by
  source.ts) instead of bare startsWith
- buildVersionUrl's shared-route fast path is segment-based rather than
  substring includes()

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Signed-off-by: Pranay Prakash <pranay.gp@gmail.com>

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Signed-off-by: Pranay Prakash <pranay.gp@gmail.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-07-16 17:15:07 +07:00