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health: add Tracker type, in prep for removing global variables

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This moves most of the health package global variables to a new
`health.Tracker` type.

But then rather than plumbing the Tracker in tsd.System everywhere,
this only goes halfway and makes one new global Tracker
(`health.Global`) that all the existing callers now use.

A future change will eliminate that global.

Updates #11874
Updates #4136

Change-Id: I6ee27e0b2e35f68cb38fecdb3b2dc4c3f2e09d68
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2024-04-25 13:24:49 -07:00
committed by Brad Fitzpatrick
parent d5fc52a0f5
commit ebc552d2e0
17 changed files with 268 additions and 256 deletions
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6
wgengine/userspace.go
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@ -970,7 +970,7 @@ func (e *userspaceEngine) Reconfig(cfg *wgcfg.Config, routerCfg *router.Config,
e.logf("wgengine: Reconfig: configuring router")
e.networkLogger.ReconfigRoutes(routerCfg)
err := e.router.Set(routerCfg)
health.SetRouterHealth(err)
health.Global.SetRouterHealth(err)
if err != nil {
return err
}
@ -979,7 +979,7 @@ func (e *userspaceEngine) Reconfig(cfg *wgcfg.Config, routerCfg *router.Config,
// assigned address.
e.logf("wgengine: Reconfig: configuring DNS")
err = e.dns.Set(*dnsCfg)
health.SetDNSHealth(err)
health.Global.SetDNSHealth(err)
if err != nil {
return err
}
@ -1183,7 +1183,7 @@ func (e *userspaceEngine) linkChange(delta *netmon.ChangeDelta) {
e.logf("[v1] LinkChange: minor")
}
health.SetAnyInterfaceUp(up)
health.Global.SetAnyInterfaceUp(up)
e.magicConn.SetNetworkUp(up)
if !up || changed {
if err := e.dns.FlushCaches(); err != nil {