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feat(selfhost): add retention for agent_context_snapshots #3937

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Merged
JSONbored merged 1 commit into from
Jul 7, 2026
Merged

feat(selfhost): add retention for agent_context_snapshots #3937

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3 changes: 3 additions & 0 deletions src/db/retention.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,9 @@ export const RETENTION_POLICY: readonly RetentionRule[] = [
{ table: "signal_snapshots", column: "generated_at", days: 90 },
{ table: "score_previews", column: "generated_at", days: 90 },
{ table: "repo_snapshots", column: "fetched_at", days: 90 },
// One payloadJson blob per agent run (#3896); a per-run diagnostic snapshot with no cross-run rollup
// depending on it, so a shorter window than the audit/usage-log tables above is appropriate.
{ table: "agent_context_snapshots", column: "created_at", days: 30 },
];

export type PruneResult = { table: string; column: string; cutoff: string; deleted: number };
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20 changes: 19 additions & 1 deletion test/unit/retention.test.ts
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Expand Up @@ -2,7 +2,7 @@ import { describe, expect, it } from "vitest";
import { createApp } from "../../src/api/routes";
import { getDb } from "../../src/db/client";
import { dedupeSignalSnapshots, pruneExpiredRecords, RETENTION_POLICY } from "../../src/db/retention";
import { aiUsageEvents, webhookEvents } from "../../src/db/schema";
import { agentContextSnapshots, aiUsageEvents, webhookEvents } from "../../src/db/schema";
import { processJob, runRetentionPrune } from "../../src/queue/processors";
import { createTestEnv } from "../helpers/d1";

Expand Down Expand Up @@ -102,6 +102,24 @@ describe("pruneExpiredRecords", () => {
await expect(pruneExpiredRecords(env, { policy: [{ table: "webhook_events; DROP TABLE x", column: "received_at", days: 1 }] })).rejects.toThrow("Unsafe retention identifier");
});

it("prunes agent_context_snapshots older than its window and keeps recent runs (#3896)", async () => {
const env = createTestEnv();
const db = getDb(env.DB);
await db.insert(agentContextSnapshots).values([
{ id: "ctx-old", runId: "run-old", createdAt: daysAgo(40) },
{ id: "ctx-recent", runId: "run-recent", createdAt: daysAgo(2) },
]);

const results = await pruneExpiredRecords(env, {
nowMs: NOW,
policy: [{ table: "agent_context_snapshots", column: "created_at", days: 30 }],
});

expect(results[0]?.deleted).toBe(1);
const rows = await env.DB.prepare("SELECT id FROM agent_context_snapshots").all<{ id: string }>();
expect(rows.results.map((row) => row.id)).toEqual(["ctx-recent"]);
});

it("the policy only targets append-only/log/snapshot tables (no current-state tables)", () => {
const tables = RETENTION_POLICY.map((r) => r.table);
for (const protectedTable of ["webhook_events", "repositories", "repository_settings", "pull_requests", "issues", "repository_ai_keys", "contributors"]) {
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