改造实时事件缓存同步

2026-08-17 17:32:02 +08:00
parent be7c124d65
commit 2aa8769661
16 changed files with 837 additions and 351 deletions
@@ -0,0 +1,71 @@
+import { query } from '../db/client.js'
+
+export type RealtimeEventRow = {
+  id: number
+  event_type: string
+  entity_id: number
+  scopes: unknown
+  operation: string
+  data: unknown
+  admin_audience: boolean
+  worker_ids: unknown
+  broadcast_workers: boolean
+  occurred_at: string
+}
+
+export async function createRealtimeEvent(input: {
+  eventType: string
+  entityId: number
+  scopes: string[]
+  operation: string
+  data?: unknown
+  adminAudience: boolean
+  workerIds: number[]
+  broadcastWorkers: boolean
+  occurredAt: string
+}): Promise<RealtimeEventRow> {
+  const result = await query<RealtimeEventRow>(
+    `
+      INSERT INTO realtime_events (
+        event_type, entity_id, scopes, operation, data,
+        admin_audience, worker_ids, broadcast_workers, occurred_at
+      ) VALUES ($1, $2, $3::jsonb, $4, $5::jsonb, $6, $7::jsonb, $8, $9)
+      RETURNING *
+    `,
+    [
+      input.eventType,
+      input.entityId,
+      JSON.stringify(input.scopes),
+      input.operation,
+      input.data === undefined ? null : JSON.stringify(input.data),
+      input.adminAudience,
+      JSON.stringify(input.workerIds),
+      input.broadcastWorkers,
+      input.occurredAt,
+    ],
+  )
+  const row = result.rows[0]
+  if (!row) throw new Error('realtime_event_create_failed')
+
+  // 事件仅用于短期断线补发，控制表体积和重连回放成本。
+  await query(
+    `
+      DELETE FROM realtime_events
+      WHERE id < GREATEST(0, (SELECT COALESCE(MAX(id), 0) - 500 FROM realtime_events))
+    `,
+  )
+  return row
+}
+
+export async function listRealtimeEventsAfter(eventId: number, limit = 500) {
+  const result = await query<RealtimeEventRow>(
+    `
+      SELECT * FROM realtime_events
+      WHERE id > $1
+      ORDER BY id ASC
+      LIMIT $2
+    `,
+    [Math.max(0, Number(eventId) || 0), Math.min(500, Math.max(1, Number(limit) || 500))],
+  )
+  return result.rows
+}