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[membership] Replace Ringop with PeerProvider interface #4653

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merged 8 commits into from
Nov 24, 2021
Merged

[membership] Replace Ringop with PeerProvider interface #4653

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4e7ec53
[membership] Replace Ringop with PeerProvider interface
mantas-sidlauskas Nov 22, 2021
cce32dc
refreshLocked
mantas-sidlauskas Nov 23, 2021
b52c9b0
do not check map entry before deletion
mantas-sidlauskas Nov 23, 2021
34e5da7
use embeded structs for members and subscribers
mantas-sidlauskas Nov 23, 2021
f4edc87
unexport RoleKey
mantas-sidlauskas Nov 23, 2021
ac9ea4e
Allow only single subscription to ringpop per service
mantas-sidlauskas Nov 23, 2021
48eb790
address comments
mantas-sidlauskas Nov 24, 2021
d19b071
address comments
mantas-sidlauskas Nov 24, 2021
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Allow only single subscription to ringpop per service
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@mantas-sidlauskas
mantas-sidlauskas committed Nov 23, 2021
commit ac9ea4e78f4944da52a42a1b508b7faf990ae30d
5 changes: 3 additions & 2 deletions common/membership/hashring.go
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Original file line number Diff line number Diff line change
Expand Up @@ -77,7 +77,6 @@ type ring struct {

sync.Mutex
keys map[string]struct{} // for de-duping change notifications

}

subscribers struct {
Expand Down Expand Up @@ -120,7 +119,9 @@ func (r *ring) Start() {
) {
return
}
r.peerProvider.Subscribe(r.service, r.refreshChan)
if err := r.peerProvider.Subscribe(r.service, r.refreshChan); err != nil {
r.logger.Fatal("subscribing to peer provider", tag.Error(err))
}

if err := r.refreshLocked(); err != nil {
r.logger.Fatal("failed to start service resolver", tag.Error(err))
Expand Down
5 changes: 5 additions & 0 deletions common/peerprovider/ringpopprovider/provider.go
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Original file line number Diff line number Diff line change
Expand Up @@ -198,6 +198,11 @@ func (r *Provider) Subscribe(name string, notifyChannel chan<- *membership.Chang
r.smu.RLock()
defer r.smu.RUnlock()

_, ok := r.subscribers[name]
if ok {
return fmt.Errorf("%q already subscribed to ringpop provider", name)
}

r.subscribers[name] = notifyChannel
return nil
}