Previously a TKA compaction would only run when a node starts, which means a long-running node could use unbounded storage as it accumulates ever-increasing amounts of TKA state. This patch changes TKA so it runs a compaction after every sync.
Updates https://github.com/tailscale/corp/issues/33537
Change-Id: I91df887ea0c5a5b00cb6caced85aeffa2a4b24ee
Signed-off-by: Alex Chan <alexc@tailscale.com>
This requires making the internals of LocalBackend a bit more generic,
and implementing the `tka.CompactableChonk` interface for `tka.Mem`.
Signed-off-by: Alex Chan <alexc@tailscale.com>
Updates https://github.com/tailscale/corp/issues/33599
This patch creates a set of tests that should be true for all implementations of Chonk and CompactableChonk, which we can share with the SQLite implementation in corp.
It includes all the existing tests, plus a test for LastActiveAncestor which was in corp but not in oss.
Updates https://github.com/tailscale/corp/issues/33465
Signed-off-by: Alex Chan <alexc@tailscale.com>
