Shubham Pampattiwar b7052c2cb1 Implement lazy per-namespace PVC-to-Pod caching for plugin path ...

This commit addresses reviewer feedback on PR #9441 regarding
concurrent backup caching concerns. Key changes:

1. Added lazy per-namespace caching for the CSI PVC BIA plugin path:
   - Added IsNamespaceBuilt() method to check if namespace is cached
   - Added BuildCacheForNamespace() for lazy, per-namespace cache building
   - Plugin builds cache incrementally as namespaces are encountered

2. Added NewVolumeHelperImplWithCache constructor for plugins:
   - Accepts externally-managed PVC-to-Pod cache
   - Follows pattern from PR #9226 (Scott Seago's design)

3. Plugin instance lifecycle clarification:
   - Plugin instances are unique per backup (created via newPluginManager)
   - Cleaned up via CleanupClients at backup completion
   - No mutex or backup UID tracking needed

4. Test coverage:
   - Added tests for IsNamespaceBuilt and BuildCacheForNamespace
   - Added tests for NewVolumeHelperImplWithCache constructor
   - Added test verifying cache usage for fs-backup determination

This maintains the O(N+M) complexity improvement from issue #9179
while addressing architectural concerns about concurrent access.

Signed-off-by: Shubham Pampattiwar <spampatt@redhat.com>

2025-12-16 12:28:47 -08:00

..

volume_policy_helper_test.go

Implement lazy per-namespace PVC-to-Pod caching for plugin path

2025-12-16 12:28:47 -08:00

volume_policy_helper.go

Implement lazy per-namespace PVC-to-Pod caching for plugin path

2025-12-16 12:28:47 -08:00