mirror of
https://github.com/shankar0123/certctl.git
synced 2026-06-07 16:51:31 +00:00
shankar0123
bee47f0318
Closes the production-readiness loop on the ACME surface. After this
commit, certctl ships per-account rate limits + a GC sweeper for
expired ACME state + a kind-driven cert-manager 1.15 integration test
+ a lego-driven RFC conformance harness + a k6 loadtest scenario for
the unauthenticated ACME path.
Architecture:
- Rate limits live in-memory + per-replica. Restart wipes the
counters; orders/hour caps are eventual-consistency anyway. A
3-replica certctl-server fleet behind an LB effectively has 3x
the configured throughput per account; persistent rate limiting
is a follow-up if production telemetry shows abuse patterns we
can't catch in a single restart cycle. Per-key + per-action
isolation: ActionNewOrder/acc-1, ActionKeyChange/acc-1, and
ActionChallengeRespond/<challenge-id> are independent buckets.
- GC loop follows the existing scheduler-loop pattern (atomic.Bool
+ sync.WaitGroup; see crlGenerationLoop for shape). Three
independent SQL sweeps per tick (DELETE expired nonces; UPDATE
pending authzs whose expires_at < now() to expired; UPDATE
pending/ready/processing orders whose expires_at < now() to
invalid). Each sweep is a single statement; failures are logged-
and-continued so a failing nonces sweep doesn't block authzs.
Per-sweep 1m timeout bounds a stuck Postgres.
- cert-manager integration test is gated on KIND_AVAILABLE so CI
skips it cleanly (kind is too heavy for per-PR). Operators run
locally via 'make acme-cert-manager-test'; the harness brings up
a fresh cluster each run + tears it down on Cleanup.
- lego conformance harness drives a real ACME client through
register → run → cert-PEM-landed against a hermetic certctl
stack. Catches RFC-shape regressions third-party clients would
hit before they ship.
- k6 ACME-flow scenario hammers the unauthenticated surface
(directory + new-nonce + ARI synthetic-id) at 100 VUs × 5m. JWS-
signed flows are out of scope for k6 (no JWS support); they're
covered by the lego harness above.
What ships:
- internal/api/acme/ratelimit.go (+ ratelimit_test.go: 7 cases —
disable-when-perHour-zero, capacity, per-key isolation, per-
action isolation, refill-over-time, RetryAfter, concurrent-access
with -race + 200 goroutines × 200 calls).
- internal/repository/postgres/acme.go: 4 new methods —
CountActiveOrdersByAccount + GCExpiredNonces + GCExpireAuthorizations
+ GCInvalidateExpiredOrders. Each a single SQL statement.
- internal/service/acme.go: SetRateLimiter + GarbageCollect +
rate-limit gates at 3 entry points (CreateOrder + RotateAccountKey
+ RespondToChallenge) + concurrent-orders gate at CreateOrder.
2 new sentinels (ErrACMERateLimited, ErrACMEConcurrentOrdersExceeded);
5 new GC metrics (gc_runs / gc_run_failures / gc_nonces_reaped /
gc_authzs_expired / gc_orders_invalidated).
- internal/scheduler/scheduler.go: ACMEGarbageCollector interface +
acmeGCRunning atomic.Bool + acmeGCInterval + 2 setters (SetACME-
GarbageCollector + SetACMEGCInterval) + acmeGCLoop following the
crlGenerationLoop shape.
- internal/api/handler/acme.go: writeServiceError gains rateLimited
(429 + RFC 8555 §6.7) + concurrent-orders-exceeded mappings.
- internal/config/config.go: 5 new env vars
(CERTCTL_ACME_SERVER_RATE_LIMIT_ORDERS_PER_HOUR=100,
CERTCTL_ACME_SERVER_RATE_LIMIT_CONCURRENT_ORDERS=5,
CERTCTL_ACME_SERVER_RATE_LIMIT_KEY_CHANGE_PER_HOUR=5,
CERTCTL_ACME_SERVER_RATE_LIMIT_CHALLENGE_RESPONDS_PER_HOUR=60,
CERTCTL_ACME_SERVER_GC_INTERVAL=1m).
- cmd/server/main.go: NewRateLimiter() + SetRateLimiter() at
startup; conditional SetACMEGarbageCollector(acmeService) +
SetACMEGCInterval(cfg.ACMEServer.GCInterval) when Enabled+
GCInterval > 0.
- deploy/test/acme-integration/: kind-config.yaml + cert-manager-
install.sh + clusterissuer-trust-authenticated.yaml +
clusterissuer-challenge.yaml + certificate-test.yaml + conformance-
lego.sh + certmanager_test.go (//go:build integration + KIND_AVAILABLE
gate).
- deploy/test/loadtest/k6/acme_flow.js + README ACME-flows section.
- Makefile: 2 new PHONY targets (acme-cert-manager-test +
acme-rfc-conformance-test).
- docs/acme-server.md: status flipped to Phase 5; Configuration
table grows 5 rows; new 'Phase 5 — operational guidance' section
explaining rate-limit math + GC sweeper semantics + cert-manager
integration + lego conformance + k6 baseline.
Tests:
- 'go vet ./...' clean across the repo.
- 'go test -short -count=1 ./internal/...' green across every
affected package (service / acme / handler / scheduler / repo /
config).
- 'go vet -tags=integration ./deploy/test/acme-integration/' clean
(the integration test compiles cleanly with the build tag).
- The kind/cert-manager harness is gated behind KIND_AVAILABLE so
CI skips by default; operators run locally via 'make acme-cert-
manager-test'.
Engineering history: cowork/WORKSPACE-CHANGELOG.md 'ACME-Server-5'.