fix(pkg/cincinnati): log the correct root CA pool size

[vprashar2929]

GetUpdates checked TLSClientConfig.ClientCAs to decide whether to log the root CA subject count, but the client transport only ever populates RootCAs (ClientCAs is a server-side field, never set for this outbound client). The nil check was therefore always true: the log always reported "0 root CA subjects" and the branch reporting the real count was dead. Check RootCAs instead, which also correctly guards the RootCAs.Subjects() dereference in the else branch.

Summary by CodeRabbit

• Bug Fixes
  • Improved TLS certificate handling when fetching updates.
  • Fixed an issue where the app could inspect the wrong certificate pool, which affected root CA logging and could cause errors when no root CA list was set.

[openshift-ci]

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This pull-request has been approved by: vprashar2929
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[openshift-ci]

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository YAML (base), Central YAML (inherited)

Review profile: CHILL

Plan: Enterprise

Run ID: 90f63dc0-7042-4c54-88b7-27c6c8221f1a

📥 Commits

Reviewing files that changed from the base of the PR and between 26871b1 and adfa00a.

📒 Files selected for processing (1)

• pkg/cincinnati/cincinnati.go

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Walkthrough

Client.GetUpdates now checks TLSClientConfig.RootCAs before logging and using the root CA subject list.

Changes

TLS root CA nil-check fix

Layer / File(s)	Summary
Root CA nil-check pkg/cincinnati/cincinnati.go	GetUpdates now tests TLSClientConfig.RootCAs == nil in the root CA branch before reading Subjects() and logging the subject count.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 15

✅ Passed checks (15 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: fixing root CA pool size logging in pkg/cincinnati.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Stable And Deterministic Test Names	✅ Passed	Only pkg/cincinnati/cincinnati.go changed; it’s non-test code and pkg/cincinnati has no Ginkgo titles, so no unstable test names were introduced.
Test Structure And Quality	✅ Passed	No Ginkgo tests were changed or added here; pkg/cincinnati uses standard Go tests only, so the test-quality checklist is not applicable.
Microshift Test Compatibility	✅ Passed	PR only changes pkg/cincinnati/cincinnati.go in GetUpdates; no new Ginkgo test declarations or OpenShift API/resource uses were added.
Single Node Openshift (Sno) Test Compatibility	✅ Passed	PR only touches pkg/cincinnati/cincinnati.go; no new or modified Ginkgo e2e tests or SNO-sensitive cluster assumptions were added.
Topology-Aware Scheduling Compatibility	✅ Passed	PASS: The PR only changes TLS root CA logging in pkg/cincinnati; no deployment manifests, controllers, or scheduling constraints were added.
Ote Binary Stdout Contract	✅ Passed	PASS: The PR only changes a nil check in Client.GetUpdates; no main/init/TestMain/suite setup or stdout writes were added in the touched code.
Ipv6 And Disconnected Network Test Compatibility	✅ Passed	The PR only changes pkg/cincinnati/cincinnati.go; no new Ginkgo e2e tests or network-facing test code were added.
No-Weak-Crypto	✅ Passed	Touched code only changes a RootCAs nil check for logging; no MD5/SHA1/DES/RC4/3DES/Blowfish/ECB or secret comparisons found.
Container-Privileges	✅ Passed	The change is confined to pkg/cincinnati/cincinnati.go and only adjusts TLS CA logging; no container/K8s manifests or privilege settings are touched.
No-Sensitive-Data-In-Logs	✅ Passed	The PR only changes a nil check in an existing log branch; it does not add or expand logging of secrets, PII, or internal data.

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✨ Finishing Touches

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