The scanJob status are different compared between "repo with 0 image" and "repo has images but platform filter does not match"

[williamshen9999]

Is there an existing issue for this?

• I have searched the existing issues

Troubleshooting logs

• I reviewed the troubleshooting logs and confirmed they contain no sensitive information.

Current Behavior

ScanJob's status for these two conditions:

One is "Failed with message: cannot discover images in registry ..."
The other is "Complete with Reason: NoImagesToScan"

Expected Behavior

ScanJob's status for these two conditions should be the same?

Steps To Reproduce

• Set up a registry with 0 image in it (ex: nvpublic/compliance_config in docker.io)
• Set up scanJob for it and the result is below (Failed with message: cannot
  discover images in registry ...)

root@sbom-rke2-213-0121:~# k get scanjob test-0-image-nvpublic-compli6wgbh -o yaml
apiVersion: sbomscanner.kubewarden.io/v1alpha1
kind: ScanJob
metadata:
  annotations:
    sbomscanner.kubewarden.io/creation-timestamp: "2026-01-23T07:14:18.550733126Z"
    sbomscanner.kubewarden.io/registry: '{"kind":"Registry","apiVersion":"sbomscanner.kubewarden.io/v1alpha1","metadata":{"name":"test-0-image-nvpublic-compli","namespace":"default","uid":"1ea6eefb-818b-4181-b1d7-4ba50fd564f4","resourceVersion":"693025","generation":1,"creationTimestamp":"2026-01-23T07:14:02Z"},"spec":{"uri":"docker.io","catalogType":"OCIDistribution","repositories":[{"name":"nvpublic/compliance_config"}]},"status":{}}'
  creationTimestamp: "2026-01-23T07:14:18Z"
  generateName: test-0-image-nvpublic-compli
  generation: 1
  name: test-0-image-nvpublic-compli6wgbh
  namespace: default
  ownerReferences:
  - apiVersion: sbomscanner.kubewarden.io/v1alpha1
    blockOwnerDeletion: true
    controller: true
    kind: Registry
    name: test-0-image-nvpublic-compli
    uid: 1ea6eefb-818b-4181-b1d7-4ba50fd564f4
  resourceVersion: "693650"
  uid: 2aa5b12f-3743-4784-ac48-c7802f883f79
spec:
  registry: test-0-image-nvpublic-compli
status:
  completionTime: "2026-01-23T07:15:31Z"
  conditions:
  - lastTransitionTime: "2026-01-23T07:14:18Z"
    message: ScanJob failed
    observedGeneration: 1
    reason: Failed
    status: "False"
    type: Scheduled
  - lastTransitionTime: "2026-01-23T07:15:31Z"
    message: ScanJob failed
    observedGeneration: 1
    reason: Failed
    status: "False"
    type: InProgress
  - lastTransitionTime: "2026-01-23T07:14:18Z"
    message: ScanJob failed
    observedGeneration: 1
    reason: Failed
    status: "False"
    type: Complete
  - lastTransitionTime: "2026-01-23T07:15:31Z"
    message: 'failed to handle message on subject sbomscanner.catalog.create: cannot
      discover images in registry test-0-image-nvpublic-compli: cannot list repository
      contents: cannot create lister for repository index.docker.io/nvpublic/compliance_config:
      GET https://index.docker.io/v2/nvpublic/compliance_config/tags/list?n=1000:
      NAME_UNKNOWN: repository name not known to registry; map[name:nvpublic/compliance_config]'
    observedGeneration: 1
    reason: InternalError
    status: "True"
    type: Failed
  startTime: "2026-01-23T07:15:30Z"

• Set up a registry and set up a non-existing platform filter for it (ex: setting windows/arm/v8 for it but that registry's images don't have this platform)

root@sbom-rke2-213-0121:~# k get registry test-nvpublic-al-non-exist-filter -o yaml
apiVersion: sbomscanner.kubewarden.io/v1alpha1
kind: Registry
metadata:
  creationTimestamp: "2026-01-23T07:22:39Z"
  generation: 1
  name: test-nvpublic-al-non-exist-filter
  namespace: default
  resourceVersion: "696609"
  uid: 73295738-d303-4671-ad7e-c1dec9b029ae
spec:
  authSecret: ""
  caBundle: ""
  catalogType: OCIDistribution
  insecure: false
  platforms:
  - arch: arm
    os: windows
    variant: v8
  repositories:
  - name: nvpublic/al
  uri: docker.io

• Set up a scanJob for it and the result is below (Complete with Reason: NoImagesToScan)

root@sbom-rke2-213-0121:~# k get scanjob test-nvpublic-al-non-exist-filterpx5mn -o yaml
apiVersion: sbomscanner.kubewarden.io/v1alpha1
kind: ScanJob
metadata:
  annotations:
    sbomscanner.kubewarden.io/creation-timestamp: "2026-01-23T07:23:02.016602712Z"
    sbomscanner.kubewarden.io/registry: '{"kind":"Registry","apiVersion":"sbomscanner.kubewarden.io/v1alpha1","metadata":{"name":"test-nvpublic-al-non-exist-filter","namespace":"default","uid":"73295738-d303-4671-ad7e-c1dec9b029ae","resourceVersion":"696609","generation":1,"creationTimestamp":"2026-01-23T07:22:39Z"},"spec":{"uri":"docker.io","catalogType":"OCIDistribution","repositories":[{"name":"nvpublic/al"}],"platforms":[{"arch":"arm","os":"windows","variant":"v8"}]},"status":{}}'
  creationTimestamp: "2026-01-23T07:23:01Z"
  generateName: test-nvpublic-al-non-exist-filter
  generation: 1
  name: test-nvpublic-al-non-exist-filterpx5mn
  namespace: default
  ownerReferences:
  - apiVersion: sbomscanner.kubewarden.io/v1alpha1
    blockOwnerDeletion: true
    controller: true
    kind: Registry
    name: test-nvpublic-al-non-exist-filter
    uid: 73295738-d303-4671-ad7e-c1dec9b029ae
  resourceVersion: "697269"
  uid: 99254766-645d-4159-a493-1400313e98a0
spec:
  registry: test-nvpublic-al-non-exist-filter
status:
  completionTime: "2026-01-23T07:24:14Z"
  conditions:
  - lastTransitionTime: "2026-01-23T07:23:02Z"
    message: ScanJob completed successfully
    observedGeneration: 1
    reason: Complete
    status: "False"
    type: Scheduled
  - lastTransitionTime: "2026-01-23T07:24:14Z"
    message: ScanJob completed successfully
    observedGeneration: 1
    reason: Complete
    status: "False"
    type: InProgress
  - lastTransitionTime: "2026-01-23T07:24:14Z"
    message: No images to process
    observedGeneration: 1
    reason: NoImagesToScan
    status: "True"
    type: Complete
  - lastTransitionTime: "2026-01-23T07:23:02Z"
    message: ScanJob completed successfully
    observedGeneration: 1
    reason: Complete
    status: "False"
    type: Failed
  startTime: "2026-01-23T07:23:02Z"

Environment

- OS:
- Architecture:

Anything else?

No response