refactor(engine): declare node frame kind in @relaycast/types and route events through one dispatcher - #362
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… route events through one dispatcher The durable/ephemeral split for node pushes was a hard-coded Set in routes/fanout.ts, and the fan-out to the workspace stream, the durable workspace event log and the node context push was hand-assembled in fanout.ts, deliveryRouting.ts and agent.ts. - @relaycast/types now declares NODE_DURABLE_EVENT_TYPES, NodeDeliveryClassSchema, isNodeDurableEventType and nodeDeliveryClassFor. - engine/eventDispatch.ts is the single place that decides which sinks an event reaches, keyed off that declaration plus the dispatch scope (workspace / channel / agents / presence). - fanout.ts, deliveryRouting.ts and agent.ts call the dispatcher instead of assembling sinks by hand; nodeContext.ts stays the transport layer. Behavior preserving: same sinks, same payloads, same wire frames, sinks stay independent on failure. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MB3K5bK7Jc5HM92fsZRUyS
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Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThe PR defines node frame classification in ChangesEvent dispatch refactor
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🔵 Low · up to The refactor centralizes event publication, but a durable event-log append failure can still be followed by delivery without a sequence or clear recovery signal, creating a bounded risk of persistence divergence. The change is mergeable with explicit owner awareness and follow-up on failure reporting and recovery behavior. Sequence Diagram(s)sequenceDiagram
participant AgentRoute
participant fanoutPresence
participant publishEvent
participant WorkspaceEventLog
participant NodeContext
AgentRoute->>fanoutPresence: submit presence event
fanoutPresence->>publishEvent: dispatch presence scope
publishEvent->>WorkspaceEventLog: append and publish event
publishEvent->>NodeContext: push context frame
WorkspaceEventLog-->>publishEvent: report sink result
NodeContext-->>publishEvent: report sink result
Suggested reviewers: Poem
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Full details: Docstring CoverageExplanation Docstring coverage is 82.35% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 34 functions across 9 files. (5 skipped: 5 unsupported.) ✨ Finishing Touches📝 Generate docstrings
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Inline comments:
In `@packages/engine/src/engine/eventDispatch.ts`:
- Around line 146-151: Update the workspace event dispatch flow around
appendAndPublishWorkspaceEvent so rejected database-append promises are caught
and passed to args.onSinkError with the workspace_stream label, including when
Promise.allSettled suppresses the rejection. Add a test covering an append
failure and verifying the sink error callback is invoked.
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.agentworkforce/trajectories/completed/2026-09/traj_4q4a47j9doqd/summary.md.agentworkforce/trajectories/completed/2026-09/traj_4q4a47j9doqd/trajectory.jsonCHANGELOG.mdREADME.mdpackages/engine/src/engine/__tests__/eventDispatch.test.tspackages/engine/src/engine/eventDispatch.tspackages/engine/src/routes/agent.tspackages/engine/src/routes/deliveryRouting.tspackages/engine/src/routes/fanout.tspackages/types/CHANGELOG.mdpackages/types/src/__tests__/node-delivery-class.test.tspackages/types/src/fleet-wire.ts
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All reported issues were addressed across 12 files
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…w-architecture-rsucow # Conflicts: # CHANGELOG.md
…failures
The `durable`/`ephemeral` naming was wrong: `message.read` and
`message.reacted` do ride the `deliver` frame, but as synthetic `seq: 0`
sends with no delivery row that are dropped when the provider is not ready
(`deliverEventToRecipient` in engine/nodeDeliver.ts). The real split is
which node frame carries the event.
- @relaycast/types now exports NODE_DELIVER_FRAME_EVENT_TYPES,
NodeFrameKindSchema ('deliver' | 'context'), isNodeDeliverFrameEventType
and nodeFrameKindFor; the durable/ephemeral names are gone (the package is
unreleased on this branch, so no aliases).
- eventDispatch.ts reports a rejected workspace-log append through
onSinkError('workspace_stream') instead of letting Promise.allSettled
swallow it, in both publishEvent and publishEventsToAgents.
- nodeContext.ts keeps per-node sends independent but throws an
AggregateError when any of them rejects, so the dispatcher's
onSinkError('node_context', ...) can actually fire.
- JSDoc on the new/modified top-level functions in eventDispatch.ts,
nodeContext.ts, fanout.ts, deliveryRouting.ts and agent.ts.
- Filled in the trajectory record's commits, filesChanged, trace refs and
verification summary.
Behavior otherwise unchanged: same sinks, same payloads, same wire frames.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MB3K5bK7Jc5HM92fsZRUyS
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All reported issues were addressed across 14 files (changes from recent commits).
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`sendNodeDeliveriesToAgents` sends `action.completed`, `action.failed`, `action.denied`, `agent.exited`, `node.status.online`, and `node.status.offline` to one agent's mailbox as synthetic seq-0 `deliver` frames, the same path as the channel receipts, so `nodeFrameKindFor` must report `deliver` for them rather than `context`. None of these reach the event dispatcher with a node audience, so dispatch behaviour is unchanged. Also aligns the trajectory record's commits and endRef with the review round it describes. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MB3K5bK7Jc5HM92fsZRUyS
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Summary
Behavior-preserving refactor of the engine's event fan-out.
delivervscontext.update) was decided by a hard-coded set inroutes/fanout.ts. It is now declared in@relaycast/typesnext to the frame schemas:NODE_DELIVER_FRAME_EVENT_TYPES,nodeFrameKindFor(type): 'deliver' | 'context',isNodeDeliverFrameEventType(type), plus theNodeFrameKindtype/schema. The fourdeliver-frame types are unchanged:message.createdandthread.reply(durable mailbox rows, acked, replayed) andmessage.readandmessage.reacted(synthetic seq-0 deliver frames, best-effort, no delivery row). Everything else is a best-effortcontext.update. The classification is named for the frame, not durability, because those two receipt types are not durable (see the Codex thread).engine/eventDispatch.tsexportspublishEvent(deps, { workspaceId, type, data, scope })and a batchedpublishEventsToAgents. It is the single place that decides which sinks an event reaches: the durable workspace event log + observer stream always, and the node context push only forcontext-frame types with a non-workspace scope. Sinks stay independent (Promise.allSettled) andpublishEventnever throws, sorunInBackgroundcallers behave as before.onSinkErrorcallback (node-context sends still run independently; failures are collected into anAggregateErrorafter all targets are attempted) and are logged by the routes, where before they were swallowed.routes/fanout.ts(fanoutToChannel,fanoutToAgents,publishWorkspaceEvent,fanoutToWorkspace, newfanoutPresence),routes/deliveryRouting.ts(fanoutToAgentsForContext,notifyDeliveryFailures), and both presence fan-outs inroutes/agent.tsnow call the dispatcher instead of assembling sinks by hand. The privatebuildEvent/publishToWorkspaceStreamhelpers andNODE_DELIVERY_EVENT_TYPESare deleted.No wire formats, frame names, or openapi surface change. Every event type reaches the same sinks with the same payload as before.
Deliberately left alone:
invocationCompletion.ts(deliversaction.completed/failedvia the delivery path on purpose), the in-process presence port inadapters/node/index.ts(would double-publish), and the awaited webhook enqueues (folding them into the background group would change them to fire-and-forget).Test plan
npx turbo build,npx turbo lint,npx turbo testacross the repo: green (engine 69 files / 714 tests, types 7 files / 206 tests).tsc --noEmiton the engine: clean.packages/types/src/__tests__/node-frame-kind.test.ts(the four deliver-frame types, unknown types are context) andpackages/engine/src/engine/__tests__/eventDispatch.test.ts(17 tests: deliver-frame types never reach node context;agent.status.changed,member.joined,delivery.faileddo with the right topic andagent_ids; a rejected log append firesonSinkError('workspace_stream')and the node push still runs; one failing node of two still lets the other receive and reports a singleAggregateErrorundernode_context).Context
Follow-up to the codebase review: the two node frames are a real distinction worth keeping, but the classification should be declared once and dispatched once so the broker, the SDKs, and the engine read the same answer. Companion relay PR: AgentWorkforce/relay#1636 teaches the broker to parse
context.updateand act ondelivery.failed/agent.identity_taken_over.🤖 Generated with Claude Code
https://claude.ai/code/session_01MB3K5bK7Jc5HM92fsZRUyS