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feat: add staged rollout for rule-pack updates - #1279
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mijinummi merged 1 commit intoOct 18, 2026
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Ship a candidate rule-pack version to a growing, deterministic cohort of tenants in gated stages, with automatic rollback when a stage's candidate scan failure ratio breaches its gate. - Cohort membership from SHA-256(pack, candidate version, tenant): stable across processes, monotonic across stages, rotating between releases. - Allow/deny lists, pause/resume/rollback, forced advance requires a reason. - Per-scan pins keep retries on the same rule-pack versions; the pin fingerprint belongs in scan-result cache keys. - Unregistered packs are unmanaged, so existing scan paths are unchanged. - Kill switch (RULE_PACK_ROLLOUT_ENABLED=false) withdraws candidates instantly while honouring existing pins. - Tenant-scoped pins; channel writes use optimistic concurrency; outcome counters use an atomic store primitive so concurrent workers never lose increments. - In-memory and file stores, Prometheus metrics with bounded labels, and sanitized structured logs that never include store errors or content. - Fixtures: realistic Soroban AMM repository rollout and a frozen cohort assignment regression snapshot. - Docs: docs/RULE_PACK_STAGED_ROLLOUT.md Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Ship a candidate rule-pack version to a growing, deterministic cohort of tenants in gated stages, with automatic rollback when a stage's candidate scan failure ratio breaches its gate.
Closes #1270
Closes #1269
Closes #1267
Closes #1268