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Tiger KaovilaiandClaude Sonnet 5
40af5efdd0
Add includedNamespacesByLabel, excludedNamespacesByLabel, and
labelSelectorLogic to IncludeExcludePolicy in the ResourcePolicy
ConfigMap (realizes design in velero-io/velero#9772), letting a backup
select or exclude namespaces by label instead of (or in addition to)
name/wildcard.
The backup controller resolves label selectors against the live
namespace list once per backup, merges the results into
spec.includedNamespaces/excludedNamespaces, then proceeds through the
existing name-based filtering unchanged. A defaulted "*" include list
is replaced by the resolved set; an explicitly-configured include list
(including an explicit "*") is unioned with it instead, and stays
canonical rather than widening. Namespaces matching an exclude
selector are always subtracted from the merged includes, regardless of
how the includes were populated.
Because Velero's namespace-includes/excludes model requires at least
one name (an empty list means "match everything"), a selector that
resolves to zero namespaces is represented with a sentinel glob
pattern ("[-]*") guaranteed to match no real namespace, rather than an
empty list that would silently fall back to including/excluding
everything.
labelSelectorLogic ("AND"/"OR", case-insensitive) controls whether
multiple included/excluded label selectors are combined by
intersection or union; it is validated up front, including inside
ResolveNamespacesByLabel itself, so an invalid value fails fast instead
of silently falling through to OR semantics.
Namespace-selection-by-label and resource-selection-by-label act as
independent axes and do not affect each other, matching the design
discussion in #9772.
Known limitations:
- Selectors are evaluated once per backup against the namespace list
at that point in time; namespaces created or relabeled mid-backup
are not picked up.
- Backup-only for now; restore-side namespace mapping is unaffected.
Testing:
- Unit coverage in internal/resourcepolicies for validation, selector
resolution (including AND/OR logic, case-insensitivity, and
malformed-selector/invalid-logic error paths), and the no-match
sentinel.
- Unit coverage in pkg/controller for the merge logic between resolved
label selections and explicit/defaulted includes and excludes.
- End-to-end coverage in pkg/backup exercising the full backup
pipeline with label-selected namespaces, including the
velero.io/exclude-from-backup hard-exclusion interaction and the
zero-match/fully-excluded sentinel path.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Signed-off-by: Tiger Kaovilai <tkaovila@redhat.com>