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ipn/ipnlocal: centralize assignments to cc + ccAuto in new method

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cc vs ccAuto is a mess. It needs to go. But this is a baby step towards
getting there.

Updates #11649

Change-Id: I34f33934844e580bd823a7d8f2b945cf26c87b3b
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2024-04-13 16:20:42 -07:00 committed by Brad Fitzpatrick
parent 970b1e21d0
commit 68043a17c2
1 changed files with 11 additions and 4 deletions
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15
ipn/ipnlocal/local.go
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@ -1838,8 +1838,7 @@ func (b *LocalBackend) Start(opts ipn.Options) error {
if prevCC != nil {
defer prevCC.Shutdown() // must be called after b.mu is unlocked
}
b.cc = cc
b.ccAuto, _ = cc.(*controlclient.Auto)
b.setControlClientLocked(cc)
endpoints := b.endpoints
if err := b.initTKALocked(); err != nil {
@ -4567,6 +4566,15 @@ func (b *LocalBackend) requestEngineStatusAndWait() {
b.statusLock.Unlock()
}
// setControlClientLocked sets the control client to cc,
// which may be nil.
//
// b.mu must be held.
func (b *LocalBackend) setControlClientLocked(cc controlclient.Client) {
b.cc = cc
b.ccAuto, _ = cc.(*controlclient.Auto)
}
// resetControlClientLocked sets b.cc to nil and returns the old value. If the
// returned value is non-nil, the caller must call Shutdown on it after
// releasing b.mu.
@ -4589,8 +4597,7 @@ func (b *LocalBackend) resetControlClientLocked() controlclient.Client {
b.numClientStatusCalls.Add(1)
}
prev := b.cc
b.cc = nil
b.ccAuto = nil
b.setControlClientLocked(nil)
return prev
}