tegwick
ca8a09ed04
Makes the state hub an event publisher so activity-core can drive
maintenance automation declaratively via ActivityDefinitions, rather
than the hub creating tasks itself.
- api/events/: lazy JetStream publisher + EventEnvelope mirroring
activity-core's contract; no-op when NATS_URL unset, fire-and-forget
with logged failures so publishing never breaks an API request.
- Wired publishers on the five v1.0 lifecycle events:
org.statehub.repo.registered (POST /repos/)
org.statehub.workstream.completed (PATCH /workstreams/* on transition)
org.statehub.decision.resolved (POST /decisions/*/resolve)
org.statehub.domain.goal.activated (POST /domain-goals/*/activate)
org.statehub.task.stale (scripts/cleanup_stale_tasks.py)
- docs/nats-event-subjects.md: subject naming convention + catalog.
- docs/cron-migration.md: design stub for replacing custodian-sync
systemd timer and cleanup-stale cron with ActivityDefinitions
(depends on activity-core WP-0003).
- docs/activity-core-delegation.md: protocol, invariants, cutover plan.
- SCOPE.md: declares activity-core as downstream event consumer and
restates that the state hub stays a read model, not a task factory.
Workplan: workplans/CUST-WP-0040-state-hub-nats-activity-core-integration.md
242 tests pass.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
56 lines
1.9 KiB
Python
56 lines
1.9 KiB
Python
"""EventEnvelope — schema for state-hub lifecycle events published to NATS.
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Mirrors the EventEnvelope contract defined in activity-core
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(`src/activity_core/models.py`). The state-hub publishes; activity-core
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consumes and routes to ActivityDefinitions.
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Subject naming convention (see docs/nats-event-subjects.md):
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org.statehub.{noun}.{verb}
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Examples:
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org.statehub.repo.registered
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org.statehub.workstream.completed
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org.statehub.decision.resolved
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org.statehub.domain.goal.activated
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org.statehub.task.stale
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"""
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from __future__ import annotations
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import uuid
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from datetime import datetime, timezone
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from typing import Any
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from pydantic import BaseModel, Field
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PUBLISHER = "the-custodian/state-hub"
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class EventEnvelope(BaseModel):
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"""Standard envelope shared with activity-core. Do not break compatibility.
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All inbound events on activity-core's side are normalised into this shape.
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"""
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id: str = Field(description="UUID v4 — stable unique ID for deduplication.")
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type: str = Field(description="Dot-namespaced event type, e.g. 'org.statehub.repo.registered'.")
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version: str = Field(default="1.0", description="Schema version string.")
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timestamp: datetime = Field(description="When the event occurred (UTC).")
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publisher: str = Field(default=PUBLISHER, description="Originating service.")
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attributes: dict[str, Any] = Field(
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default_factory=dict,
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description="Event-specific attributes; structure varies by event type.",
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)
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@classmethod
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def new(cls, event_type: str, attributes: dict[str, Any] | None = None) -> "EventEnvelope":
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"""Construct an envelope with a fresh UUID and current UTC timestamp."""
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return cls(
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id=str(uuid.uuid4()),
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type=event_type,
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timestamp=datetime.now(tz=timezone.utc),
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publisher=PUBLISHER,
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attributes=attributes or {},
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)
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