Monorepo for Tangled
knotmirror/knotstream: use long-live context for subscription
Signed-off-by: Seongmin Lee <git@boltless.me>
authored by
Seongmin Lee
and committed by
tangled.org
(Apr 7, 2026, 3:18 AM UTC)
1164e7a3
ffd2e000
+18
-3
+12
-2
knotmirror/knotstream/knotstream.go
+12
-2
knotmirror/knotstream/knotstream.go
···
66
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if host.Status == models.HostStatusBanned {
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return fmt.Errorf("cannot subscribe to banned knot")
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}
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-
return s.slurper.Subscribe(ctx, *host)
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+
// `Subscribe` expects long-living context
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+
if err := s.slurper.Subscribe(*host); err != nil {
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+
return fmt.Errorf("slurper: %w", err)
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+
}
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+
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+
host.Status = models.HostStatusActive
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+
if err := db.UpsertHost(ctx, s.db, host); err != nil {
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+
return fmt.Errorf("upserting host status to db: %w", err)
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+
}
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+
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+
return nil
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}
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func (s *KnotStream) ResubscribeAllHosts(ctx context.Context) error {
···
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for _, host := range hosts {
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l := s.logger.With("hostname", host.Hostname)
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l.Info("re-subscribing to active host")
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-
if err := s.slurper.Subscribe(ctx, host); err != nil {
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+
if err := s.slurper.Subscribe(host); err != nil {
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l.Warn("failed to re-subscribe to host", "err", err)
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}
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// sleep for a very short period, so we don't open tons of sockets at the same time
+6
-1
knotmirror/knotstream/slurper.go
+6
-1
knotmirror/knotstream/slurper.go
···
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return err
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}
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-
func (s *KnotSlurper) Subscribe(ctx context.Context, host models.Host) error {
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+
func (s *KnotSlurper) Subscribe(host models.Host) error {
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s.subsLk.Lock()
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defer s.subsLk.Unlock()
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95
···
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}
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s.subs[host.Hostname] = sub
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+
// TODO: use service level context, not the top-most one.
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+
// Using top-most context should be avoided to do graceful shutdown.
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+
ctx := context.TODO()
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+
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sub.scheduler.Start(ctx)
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go s.subscribeWithRedialer(ctx, host, sub)
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return nil
···
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s.subsLk.Lock()
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defer s.subsLk.Unlock()
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+
l.Info("unsubscribing knot")
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delete(s.subs, host.Hostname)
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}()
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