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bc4c8b65c7
When the client is disconnected from control for any reason (typically just turned off), we should still attempt to update if auto-updates are enabled. This may help users who turn tailscale on infrequently for accessing resources. RELNOTE: Apply auto-updates even if the node is down or disconnected from the coordination server. Updates #12117 Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
61 lines
1.3 KiB
Go
61 lines
1.3 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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//go:build linux || windows
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package ipnlocal
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import (
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"context"
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"time"
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"tailscale.com/clientupdate"
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"tailscale.com/ipn"
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)
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func (b *LocalBackend) stopOfflineAutoUpdate() {
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if b.offlineAutoUpdateCancel != nil {
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b.logf("offline auto-update: stopping update checks")
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b.offlineAutoUpdateCancel()
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b.offlineAutoUpdateCancel = nil
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}
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}
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func (b *LocalBackend) maybeStartOfflineAutoUpdate(prefs ipn.PrefsView) {
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if !prefs.AutoUpdate().Apply.EqualBool(true) {
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return
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}
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// AutoUpdate.Apply field in prefs can only be true for platforms that
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// support auto-updates. But check it here again, just in case.
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if !clientupdate.CanAutoUpdate() {
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return
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}
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if b.offlineAutoUpdateCancel != nil {
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// Already running.
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return
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}
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ctx, cancel := context.WithCancel(context.Background())
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b.offlineAutoUpdateCancel = cancel
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b.logf("offline auto-update: starting update checks")
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go b.offlineAutoUpdate(ctx)
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}
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const offlineAutoUpdateCheckPeriod = time.Hour
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func (b *LocalBackend) offlineAutoUpdate(ctx context.Context) {
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t := time.NewTicker(offlineAutoUpdateCheckPeriod)
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defer t.Stop()
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for {
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select {
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case <-ctx.Done():
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return
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case <-t.C:
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}
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if err := b.startAutoUpdate("offline auto-update"); err != nil {
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b.logf("offline auto-update: failed: %v", err)
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}
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}
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}
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