image

Image

Purpose

pkg/handler/image is the image-specific handler client.

It is one of the biggest outliers in the handler graph because it is mostly provider-backed rather than CRD-backed. The package does not primarily manage a stored Kubernetes image resource. Instead it coordinates image import, query, deletion, visibility, and snapshot-adjacent metadata through the provider layer.

It therefore sits closer to the provider image-policy surface than to the normal CRUD-over-CRD pattern used by many other handlers.

Distinctive Behaviour

• v1 image list/create/delete flows are organization- and region-scoped
• v2 image query is flatter and provider-query-driven
• import validates the remote image by peeking the MBR and currently requires a raw-format style bootable image
• image provenance and ownership semantics are carried through tags and organization scoping
• delete enforces ownership visibility and surfaces “still in use” conflicts

Invariants And Guard Rails

• Region access is enforced via region.CheckAccess for all image operations (v1 list/create/delete and v2 query), preventing access to regions the caller cannot see.
• Image visibility is provider-mediated, not inferred from CRD ancestry.
• Imported images are tagged to distinguish provenance and organization ownership.
• Delete only succeeds for images effectively owned by the caller's organization.
• v2 query semantics are intentionally driven through provider query interfaces rather than reimplementing image indexing locally.

Caveats

• This package inherits the image-origin/tag design smell already documented in ../../constants: tags are carrying semantics that would be cleaner as typed API fields.
• Import validation is intentionally narrow and conservative at present.
• Because images are mostly provider-backed, this package is not a good example of the normal CRD-centric handler pattern.

Cross-Package Context

• ../README.md explains why image is an outlier in the handler graph
• ../../providers/types and ../../providers/internal/openstack describe the provider-side image model this package consumes
• ../../constants documents the image provenance tag contract