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health, all: remove health.Global, finish plumbing health.Tracker

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Updates #11874
Updates #4136

Change-Id: I414470f71d90be9889d44c3afd53956d9f26cd61
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2024-04-26 10:12:46 -07:00
committed by Brad Fitzpatrick
parent a4a282cd49
commit 745931415c
40 changed files with 151 additions and 125 deletions
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12
health/health.go
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@@ -30,15 +30,9 @@ var (
debugHandler map[string]http.Handler
)
// Global is a global health tracker for the process.
//
// TODO(bradfitz): finish moving all reference to this plumb it (ultimately out
// from tsd.System) so a process can have multiple tsnet/etc instances with
// their own health trackers. But for now (2024-04-25), the tsd.System value
// given out is just this one, until that's the only remaining Global reference
// remaining.
var Global = new(Tracker)
// Tracker tracks the health of various Tailscale subsystems,
// comparing each subsystems' state with each other to make sure
// they're consistent based on the user's intended state.
type Tracker struct {
// mu guards everything in this var block.
mu sync.Mutex