OCPBUGS-57627: cert-inspection: create stubs for in-memory certificates

[vrutkovs]

We have no method to detect those, we have to create stub entries for every instance of apiserver.

Tested in openshift/origin#30005

[openshift-ci-robot]

@vrutkovs: This pull request references Jira Issue OCPBUGS-57627, which is valid.

3 validation(s) were run on this bug

• bug is open, matching expected state (open)
• bug target version (4.20.0) matches configured target version for branch (4.20.0)
• bug is in the state POST, which is one of the valid states (NEW, ASSIGNED, POST)

Requesting review from QA contact:
/cc @wangke19

The bug has been updated to refer to the pull request using the external bug tracker.

In response to this:

We have no method to detect those, we have to create stub entries for every instance of apiserver

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[wangke19]

The description is hardcoded as "apiserver loopback certificate". This limits the function's reusability. It would be better to add a Description field to the InMemoryCertDetail
struct to allow callers to provide context-specific descriptions.

[vrutkovs]

Good idea

[wangke19]

We checking for nil on list.InMemoryResourceData.CertKeyPairs but then initializing list.CertKeyPairs.Items. This might likely be:

if list.InMemoryResourceData.CertKeyPairs == nil {
     list.InMemoryResourceData.CertKeyPairs = []certgraphapi.PKIRegistryInMemoryCertKeyPair{}
 }
 // and separately
 if list.CertKeyPairs.Items == nil {
      list.CertKeyPairs.Items = []certgraphapi.CertKeyPair{}
 }

[vrutkovs]

Great find

[wangke19]

Add Unit Tests

The new functionality, especially in collector.go and deduplication.go, is not covered by new tests.

Advice:

• Create a new test file pkg/certs/cert-inspection/certgraphanalysis/collector_test.go.
• Add a unit test for CreateInMemoryPKIList using a fake kubeClient to ensure it correctly generates CertKeyPair objects based on a list of pods.
• Add a unit test for CombineCertInMemoryLocations in deduplication.go to verify that it correctly merges and de-duplicates pod locations.

[openshift-ci]

@vrutkovs: all tests passed!

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[wangke19]

/lgtm

[openshift-ci]

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