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shankar0123
919a92bf1b
Phase 6 of the deploy-hardening I master bundle. HAProxy connector follows the canonical Phase 4 NGINX template with the HAProxy- specific quirk: combined PEM file (cert + chain + key in one file, in that order). Test count lifts 3 → 36. HAProxy specifics: - buildCombinedPEM concatenates cert, chain, key in HAProxy's required order. The combined file goes through deploy.Apply as a single File entry (vs NGINX/Apache's 2-3 separate File entries). - Default mode 0600 unconditionally (combined file contains the private key); operators rely on this back-compat behavior. PEMFileMode override is the supported escape hatch. - Validate command is `haproxy -c -f <config>`. Reload via `systemctl reload haproxy` (NOT `restart` — reload uses socket activation to drain in-flight connections). - Default user/group: haproxy (cross-distro consistent). DeployCertificate refactor: - Replaces the duplicated os.WriteFile flow with deploy.Apply. - PreCommit runs `haproxy -c -f` validation (gated on ValidateCommand being non-empty — HAProxy historically allowed empty validate). - PostCommit runs the operator's ReloadCommand. - Post-deploy TLS verify (frozen-decision-0.3 default ON when Endpoint is configured): probes the configured target, fingerprint-matches against the deployed cert (the leaf cert block from the combined PEM), retries with backoff for load- balanced targets. - Rollback wires identical to NGINX/Apache: backup restore + reload retry on PostCommit failure; verify-fail also triggers rollback. ValidateOnly real impl: returns sentinel when no ValidateCommand; otherwise runs the operator's command without touching the live combined PEM. Tests (36 total: 33 in haproxy_atomic_test.go + 3 pre-existing in haproxy_test.go): - Atomic invariants (happy, validate-fail, reload-fail-rollback, rollback-also-fail-escalation) - Combined PEM order (cert + chain + key — verified via PEM block headers, not base64 bodies) - Mode handling (default 0600 even when existing is 0640 — back-compat; PEMFileMode override; existing-mode unchanged when override matches) - Idempotency (full skip) - Verify (match, mismatch, dial-timeout, retries, disabled, no-endpoint, rollback-runs-reload) - ValidateOnly (happy, fails, no-command-sentinel, stderr-in-error) - Concurrency (same-paths-serialize) - Edge cases (no-chain, no-key, ctx-cancelled, no-validate-command, config-validation rejects missing pem_path / reload / shell-injection) Coverage: HAProxy 88.0% (above >=85% prompt bar). Race detector clean. golangci-lint v2.11.4 clean. Smoke test connectorsAtPhase3 list shrinks 11→10 (haproxy removed alongside nginx + apache). Phase 7 next: Traefik + Caddy + Envoy + Postfix — the remaining file-based connectors get the same treatment.