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health,ipn/ipnlocal: introduce eventbus in heath.Tracker (#17085)

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The Tracker was using direct callbacks to ipnlocal. This PR moves those
to be triggered via the eventbus.

Additionally, the eventbus is now closed on exit from tailscaled
explicitly, and health is now a SubSystem in tsd.

Updates #15160

Signed-off-by: Claus Lensbøl <claus@tailscale.com>
This commit is contained in:
Claus Lensbøl
2025-09-16 11:25:29 -04:00
committed by GitHub
parent 4cca9f7c67
commit 2015ce4081
37 changed files with 404 additions and 245 deletions
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6
tsnet/tsnet.go
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@@ -577,7 +577,7 @@ func (s *Server) start() (reterr error) {
sys := tsd.NewSystem()
s.sys = sys
if err := s.startLogger(&closePool, sys.HealthTracker(), tsLogf); err != nil {
if err := s.startLogger(&closePool, sys.HealthTracker.Get(), tsLogf); err != nil {
return err
}
@@ -595,7 +595,7 @@ func (s *Server) start() (reterr error) {
Dialer: s.dialer,
SetSubsystem: sys.Set,
ControlKnobs: sys.ControlKnobs(),
HealthTracker: sys.HealthTracker(),
HealthTracker: sys.HealthTracker.Get(),
Metrics: sys.UserMetricsRegistry(),
})
if err != nil {
@@ -603,7 +603,7 @@ func (s *Server) start() (reterr error) {
}
closePool.add(s.dialer)
sys.Set(eng)
sys.HealthTracker().SetMetricsRegistry(sys.UserMetricsRegistry())
sys.HealthTracker.Get().SetMetricsRegistry(sys.UserMetricsRegistry())
// TODO(oxtoacart): do we need to support Taildrive on tsnet, and if so, how?
ns, err := netstack.Create(tsLogf, sys.Tun.Get(), eng, sys.MagicSock.Get(), s.dialer, sys.DNSManager.Get(), sys.ProxyMapper())