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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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22
ipn/ipnlocal/local.go
View File

@@ -426,7 +426,7 @@ func NewLocalBackend(logf logger.Logf, logID logid.PublicID, sys *tsd.System, lo
b.linkChange(&netmon.ChangeDelta{New: netMon.InterfaceState()})
b.unregisterNetMon = netMon.RegisterChangeCallback(b.linkChange)
b.unregisterHealthWatch = health.RegisterWatcher(b.onHealthChange)
b.unregisterHealthWatch = health.Global.RegisterWatcher(b.onHealthChange)
if tunWrap, ok := b.sys.Tun.GetOK(); ok {
tunWrap.PeerAPIPort = b.GetPeerAPIPort
@@ -761,7 +761,7 @@ func (b *LocalBackend) UpdateStatus(sb *ipnstate.StatusBuilder) {
}
}
}
if err := health.OverallError(); err != nil {
if err := health.Global.OverallError(); err != nil {
switch e := err.(type) {
case multierr.Error:
for _, err := range e.Errors() {
@@ -820,7 +820,7 @@ func (b *LocalBackend) UpdateStatus(sb *ipnstate.StatusBuilder) {
sb.MutateSelfStatus(func(ss *ipnstate.PeerStatus) {
ss.OS = version.OS()
ss.Online = health.GetInPollNetMap()
ss.Online = health.Global.GetInPollNetMap()
if b.netMap != nil {
ss.InNetworkMap = true
if hi := b.netMap.SelfNode.Hostinfo(); hi.Valid() {
@@ -1221,7 +1221,7 @@ func (b *LocalBackend) SetControlClientStatus(c controlclient.Client, st control
if st.NetMap != nil {
if envknob.NoLogsNoSupport() && st.NetMap.HasCap(tailcfg.CapabilityDataPlaneAuditLogs) {
msg := "tailnet requires logging to be enabled. Remove --no-logs-no-support from tailscaled command line."
health.SetLocalLogConfigHealth(errors.New(msg))
health.Global.SetLocalLogConfigHealth(errors.New(msg))
// Connecting to this tailnet without logging is forbidden; boot us outta here.
b.mu.Lock()
prefs.WantRunning = false
@@ -1818,7 +1818,7 @@ func (b *LocalBackend) Start(opts ipn.Options) error {
return nil
}
var warnInvalidUnsignedNodes = health.NewWarnable()
var warnInvalidUnsignedNodes = health.Global.NewWarnable()
// updateFilterLocked updates the packet filter in wgengine based on the
// given netMap and user preferences.
@@ -3044,7 +3044,7 @@ func (b *LocalBackend) isDefaultServerLocked() bool {
return prefs.ControlURLOrDefault() == ipn.DefaultControlURL
}
var warnExitNodeUsage = health.NewWarnable(health.WithConnectivityImpact())
var warnExitNodeUsage = health.Global.NewWarnable(health.WithConnectivityImpact())
// updateExitNodeUsageWarning updates a warnable meant to notify users of
// configuration issues that could break exit node usage.
@@ -4254,7 +4254,7 @@ func (b *LocalBackend) enterStateLockedOnEntry(newState ipn.State, unlock unlock
// prefs may change irrespective of state; WantRunning should be explicitly
// set before potential early return even if the state is unchanged.
health.SetIPNState(newState.String(), prefs.Valid() && prefs.WantRunning())
health.Global.SetIPNState(newState.String(), prefs.Valid() && prefs.WantRunning())
if oldState == newState {
return
}
@@ -4692,9 +4692,9 @@ func (b *LocalBackend) setNetMapLocked(nm *netmap.NetworkMap) {
b.pauseOrResumeControlClientLocked()
if nm != nil {
health.SetControlHealth(nm.ControlHealth)
health.Global.SetControlHealth(nm.ControlHealth)
} else {
health.SetControlHealth(nil)
health.Global.SetControlHealth(nil)
}
// Determine if file sharing is enabled
@@ -5675,7 +5675,7 @@ func (b *LocalBackend) sshServerOrInit() (_ SSHServer, err error) {
return b.sshServer, nil
}
var warnSSHSELinux = health.NewWarnable()
var warnSSHSELinux = health.Global.NewWarnable()
func (b *LocalBackend) updateSELinuxHealthWarning() {
if hostinfo.IsSELinuxEnforcing() {
@@ -5908,7 +5908,7 @@ func (b *LocalBackend) resetForProfileChangeLockedOnEntry(unlock unlockOnce) err
b.lastServeConfJSON = mem.B(nil)
b.serveConfig = ipn.ServeConfigView{}
b.enterStateLockedOnEntry(ipn.NoState, unlock) // Reset state; releases b.mu
health.SetLocalLogConfigHealth(nil)
health.Global.SetLocalLogConfigHealth(nil)
return b.Start(ipn.Options{})
}

10
ipn/ipnlocal/network-lock.go
View File

@@ -59,11 +59,11 @@ type tkaState struct {
// b.mu must be held.
func (b *LocalBackend) tkaFilterNetmapLocked(nm *netmap.NetworkMap) {
if b.tka == nil && !b.capTailnetLock {
health.SetTKAHealth(nil)
health.Global.SetTKAHealth(nil)
return
}
if b.tka == nil {
health.SetTKAHealth(nil)
health.Global.SetTKAHealth(nil)
return // TKA not enabled.
}
@@ -117,9 +117,9 @@ func (b *LocalBackend) tkaFilterNetmapLocked(nm *netmap.NetworkMap) {
// Check that we ourselves are not locked out, report a health issue if so.
if nm.SelfNode.Valid() && b.tka.authority.NodeKeyAuthorized(nm.SelfNode.Key(), nm.SelfNode.KeySignature().AsSlice()) != nil {
health.SetTKAHealth(errors.New(healthmsg.LockedOut))
health.Global.SetTKAHealth(errors.New(healthmsg.LockedOut))
} else {
health.SetTKAHealth(nil)
health.Global.SetTKAHealth(nil)
}
}
@@ -188,7 +188,7 @@ func (b *LocalBackend) tkaSyncIfNeeded(nm *netmap.NetworkMap, prefs ipn.PrefsVie
b.logf("Disablement failed, leaving TKA enabled. Error: %v", err)
} else {
isEnabled = false
health.SetTKAHealth(nil)
health.Global.SetTKAHealth(nil)
}
} else {
return fmt.Errorf("[bug] unreachable invariant of wantEnabled w/ isEnabled")