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ipn/ipnlocal: add more logging during profile migration

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Updates tailscale/corp#11883

Change-Id: I3a3ca8f25bfefca139115b25ec4161c069da7e4a
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
This commit is contained in:
Andrew Dunham
2023-05-30 12:25:27 -04:00
parent 2aa8299c37
commit 9d09c821f7
2 changed files with 19 additions and 0 deletions
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15
ipn/ipnlocal/profiles.go
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@@ -24,6 +24,8 @@ import (
var errAlreadyMigrated = errors.New("profile migration already completed")
var debug = envknob.RegisterBool("TS_DEBUG_PROFILES")
// profileManager is a wrapper around a StateStore that manages
// multiple profiles and the current profile.
type profileManager struct {
@@ -42,6 +44,13 @@ type profileManager struct {
isNewProfile bool
}
func (pm *profileManager) dlogf(format string, args ...any) {
if !debug() {
return
}
pm.logf(format, args...)
}
// CurrentUserID returns the current user ID. It is only non-empty on
// Windows where we have a multi-user system.
func (pm *profileManager) CurrentUserID() ipn.WindowsUserID {
@@ -66,8 +75,10 @@ func (pm *profileManager) SetCurrentUserID(uid ipn.WindowsUserID) error {
// Read the CurrentProfileKey from the store which stores
// the selected profile for the current user.
b, err := pm.store.ReadState(ipn.CurrentProfileKey(string(uid)))
pm.dlogf("SetCurrentUserID: ReadState(%q) = %v, %v", string(uid), len(b), err)
if err == ipn.ErrStateNotExist || len(b) == 0 {
if runtime.GOOS == "windows" {
pm.dlogf("SetCurrentUserID: windows: migrating from legacy preferences")
if err := pm.migrateFromLegacyPrefs(); err != nil && !errors.Is(err, errAlreadyMigrated) {
return err
}
@@ -81,6 +92,7 @@ func (pm *profileManager) SetCurrentUserID(uid ipn.WindowsUserID) error {
pk := ipn.StateKey(string(b))
prof := pm.findProfileByKey(pk)
if prof == nil {
pm.dlogf("SetCurrentUserID: no profile found for key: %q", pk)
pm.NewProfile()
return nil
}
@@ -555,6 +567,7 @@ func newProfileManagerWithGOOS(store ipn.StateStore, logf logger.Logf, goos stri
// and runtime must be valid Windows security identifier structures.
} else if len(knownProfiles) == 0 && goos != "windows" && runtime.GOOS != "windows" {
// No known profiles, try a migration.
pm.dlogf("no known profiles; trying to migrate from legacy prefs")
if err := pm.migrateFromLegacyPrefs(); err != nil {
return nil, err
}
@@ -573,11 +586,13 @@ func (pm *profileManager) migrateFromLegacyPrefs() error {
metricMigrationError.Add(1)
return fmt.Errorf("load legacy prefs: %w", err)
}
pm.dlogf("loaded legacy preferences; sentinel=%q", sentinel)
if err := pm.SetPrefs(prefs); err != nil {
metricMigrationError.Add(1)
return fmt.Errorf("migrating _daemon profile: %w", err)
}
pm.completeMigration(sentinel)
pm.dlogf("completed legacy preferences migration with sentinel=%q", sentinel)
metricMigrationSuccess.Add(1)
return nil
}