This commits removes the locks used to guard data integrity for the
database and replaces them with Transactions, turns out that SQL had
a way to deal with this all along.
This reduces the complexity we had with multiple locks that might stack
or recurse (database, nofitifer, mapper). All notifications and state
updates are now triggered _after_ a database change.
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* fix#1706 - failover should disregard disabled routes during failover
* fixe tests for failover; all current tests assume routes to be enabled
* add testcase for #1706 - failover to disabled route
* upgrade tailscale
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* make Node object use actualy tailscale key types
This commit changes the Node struct to have both a field for strings
to store the keys in the database and a dedicated Key for each type
of key.
The keys are populated and stored with Gorm hooks to ensure the data
is stored in the db.
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* use key types throughout the code
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* make sure machinekey is concistently used
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* use machine key in auth url
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* fix web register
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* use key type in notifier
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* fix relogin with webauth
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
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Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
This commit rearranges the poll handler to immediatly accept
updates and notify its peers and return, not travel down the
function for a bit. This reduces the DB calls and other
holdups that isnt necessary to send a "lite response", a
map response without peers, or accepting an endpoint update.
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
This field is no longer used, it was used in our old state
"algorithm" to determine if we should send an update.
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
This commit changes the internals of the mapper to
track all the changes to peers over its lifetime.
This means that it no longer depends on the database
and this should hopefully help with locks and timing issues.
When the mapper is created, it needs the current list of peers,
the world view, when the polling session was started. Then as
update changes are called, it tracks the changes and generates
responses based on its internal list.
As a side, the types.Machines and types.MachinesP, as well as
types.Machine being passed as a full struct and pointer has been
changed to always be pointers, everywhere.
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
Previously we did not update the packet filter
when nodes changed, which would cause new nodes
to be missing from packet filters of old nodes.
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
This commits extends the mapper with functions for creating "delta"
MapResponses for different purposes (peer changed, peer removed, derp).
This wires up the new state management with a new StateUpdate struct
letting the poll worker know what kind of update to send to the
connected nodes.
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
This commit replaces the timestamp based state system with a new
one that has update channels directly to the connected nodes. It
will send an update to all listening clients via the polling
mechanism.
It introduces a new package notifier, which has a concurrency safe
manager for all our channels to the connected nodes.
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
There was a lot of tests that actually threw a lot of errors and that did
not pass all the way because we didnt check everything. This commit should
fix all of these cases.
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
