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ipn/ipnlocal: add client metric gauge for number of IPNBus connections

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Updates #1708

Change-Id: Ic7e28d692b4c48e78c842c26234b861fe42a916e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2025-01-08 10:47:33 -08:00 committed by Brad Fitzpatrick
parent c81a95dd53
commit 8d6b996483
1 changed files with 8 additions and 0 deletions
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8
ipn/ipnlocal/local.go
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@ -95,6 +95,7 @@ import (
"tailscale.com/types/preftype" "tailscale.com/types/preftype"
"tailscale.com/types/ptr" "tailscale.com/types/ptr"
"tailscale.com/types/views" "tailscale.com/types/views"
"tailscale.com/util/clientmetric"
"tailscale.com/util/deephash" "tailscale.com/util/deephash"
"tailscale.com/util/dnsname" "tailscale.com/util/dnsname"
"tailscale.com/util/goroutines" "tailscale.com/util/goroutines"
@ -2863,6 +2864,9 @@ func (b *LocalBackend) WatchNotificationsAs(ctx context.Context, actor ipnauth.A
mak.Set(&b.notifyWatchers, sessionID, session) mak.Set(&b.notifyWatchers, sessionID, session)
b.mu.Unlock() b.mu.Unlock()
metricCurrentWatchIPNBus.Add(1)
defer metricCurrentWatchIPNBus.Add(-1)
defer func() { defer func() {
b.mu.Lock() b.mu.Lock()
delete(b.notifyWatchers, sessionID) delete(b.notifyWatchers, sessionID)
@ -7696,3 +7700,7 @@ func (b *LocalBackend) vipServicesFromPrefsLocked(prefs ipn.PrefsView) []*tailcf
return slicesx.MapValues(services) return slicesx.MapValues(services)
} }
var (
metricCurrentWatchIPNBus = clientmetric.NewGauge("localbackend_current_watch_ipn_bus")
)