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4 Commits

Author SHA1 Message Date
Kristoffer Dalby
2bf1200483 policy: fix autogroup:self propagation and optimize cache invalidation (#2807)
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 2025-10-23 17:57:41 +02:00
Kristoffer Dalby
fddc7117e4 stability and race conditions in auth and node store (#2781) 
This PR addresses some consistency issues that was introduced or discovered with the nodestore.

nodestore:
Now returns the node that is being put or updated when it is finished. This closes a race condition where when we read it back, we do not necessarily get the node with the given change and it ensures we get all the other updates from that batch write.

auth:
Authentication paths have been unified and simplified. It removes a lot of bad branches and ensures we only do the minimal work.
A comprehensive auth test set has been created so we do not have to run integration tests to validate auth and it has allowed us to generate test cases for all the branches we currently know of.

integration:
added a lot more tooling and checks to validate that nodes reach the expected state when they come up and down. Standardised between the different auth models. A lot of this is to support or detect issues in the changes to nodestore (races) and auth (inconsistencies after login and reaching correct state)

This PR was assisted, particularly tests, by claude code.
 2025-10-16 12:17:43 +02:00
Kristoffer Dalby
50ed24847b debug: add json and improve 
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
 2025-09-09 09:40:00 +02:00
Kristoffer Dalby
9d236571f4 state/nodestore: in memory representation of nodes 
Initial work on a nodestore which stores all of the nodes
and their relations in memory with relationship for peers
precalculated.

It is a copy-on-write structure, replacing the "snapshot"
when a change to the structure occurs. It is optimised for reads,
and while batches are not fast, they are grouped together
to do less of the expensive peer calculation if there are many
changes rapidly.

Writes will block until commited, while reads are never
blocked.

Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
 2025-09-09 09:40:00 +02:00