NewProvider instantiates a new provider.

NewTestEnv construct a TestEnv for testing.

MetadataPresenceIndicator maintains the bookkeeping about whether metadata is ever set for a namespace.

PvtdataExpiry represents the bookkeeping related to expiry of pvtdata because of BTL policy.

SnapshotRequest maintains the information for snapshot requests.

Provider provides db handle to different bookkeepers.

TestEnv provides the bookkeeper provider env for testing.

Category is an enum type for representing the bookkeeping of different type.