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Don't hold destination queues in memory forever (#1769)

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* Don't hold destination queues in memory forever

* Close channels

* Fix ordering

* Clear more aggressively

* clearQueue only called by defer so should be safe to delete queue in any case

* Wake queue when created, otherwise cleanup doesn't get called in all cases

* Clean up periodically, we hit a race condition otherwise

* Tweaks

* Don't create queues for blacklisted hosts

* Check blacklist properly
This commit is contained in:
Neil Alexander 2021-02-17 15:16:35 +00:00 committed by GitHub
parent da797c7998
commit 8b5cd256cb
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
2 changed files with 27 additions and 9 deletions
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2
federationsender/queue/destinationqueue.go
View file

@ -46,6 +46,7 @@ const (
// ensures that only one request is in flight to a given destination
// at a time.
type destinationQueue struct {
queues *OutgoingQueues
db storage.Database
process *process.ProcessContext
signing *SigningInfo
@ -246,6 +247,7 @@ func (oq *destinationQueue) backgroundSend() {
}
destinationQueueRunning.Inc()
defer destinationQueueRunning.Dec()
defer oq.queues.clearQueue(oq)
defer oq.running.Store(false)
// Mark the queue as overflowed, so we will consult the database

34
federationsender/queue/queue.go
View file

@ -120,7 +120,7 @@ func NewOutgoingQueues(
log.WithError(err).Error("Failed to get EDU server names for destination queue hydration")
}
for serverName := range serverNames {
if queue := queues.getQueue(serverName); !queue.statistics.Blacklisted() {
if queue := queues.getQueue(serverName); queue != nil {
queue.wakeQueueIfNeeded()
}
}
@ -148,12 +148,16 @@ type queuedEDU struct {
}
func (oqs *OutgoingQueues) getQueue(destination gomatrixserverlib.ServerName) *destinationQueue {
if oqs.statistics.ForServer(destination).Blacklisted() {
return nil
}
oqs.queuesMutex.Lock()
defer oqs.queuesMutex.Unlock()
oq := oqs.queues[destination]
if oq == nil {
oq, ok := oqs.queues[destination]
if !ok {
destinationQueueTotal.Inc()
oq = &destinationQueue{
queues: oqs,
db: oqs.db,
process: oqs.process,
rsAPI: oqs.rsAPI,
@ -170,6 +174,16 @@ func (oqs *OutgoingQueues) getQueue(destination gomatrixserverlib.ServerName) *d
return oq
}
func (oqs *OutgoingQueues) clearQueue(oq *destinationQueue) {
oqs.queuesMutex.Lock()
defer oqs.queuesMutex.Unlock()
close(oq.notify)
close(oq.interruptBackoff)
delete(oqs.queues, oq.destination)
destinationQueueTotal.Dec()
}
type ErrorFederationDisabled struct {
Message string
}
@ -236,7 +250,9 @@ func (oqs *OutgoingQueues) SendEvent(
}
for destination := range destmap {
oqs.getQueue(destination).sendEvent(ev, nid)
if queue := oqs.getQueue(destination); queue != nil {
queue.sendEvent(ev, nid)
}
}
return nil
@ -306,7 +322,9 @@ func (oqs *OutgoingQueues) SendEDU(
}
for destination := range destmap {
oqs.getQueue(destination).sendEDU(e, nid)
if queue := oqs.getQueue(destination); queue != nil {
queue.sendEDU(e, nid)
}
}
return nil
@ -317,9 +335,7 @@ func (oqs *OutgoingQueues) RetryServer(srv gomatrixserverlib.ServerName) {
if oqs.disabled {
return
}
q := oqs.getQueue(srv)
if q == nil {
return
if queue := oqs.getQueue(srv); queue != nil {
queue.wakeQueueIfNeeded()
}
q.wakeQueueIfNeeded()
}