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Neil Alexander 2020-12-07 10:28:34 +00:00
parent a91e3d6f35
commit 7246580d54
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GPG key ID: A02A2019A2BB0944
1 changed files with 13 additions and 12 deletions
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25
federationsender/queue/destinationqueue.go
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@ -53,15 +53,15 @@ type destinationQueue struct {
destination gomatrixserverlib.ServerName // destination of requests
running atomic.Bool // is the queue worker running?
backingOff atomic.Bool // true if we're backing off
overflowed atomic.Bool // exceeded in-memory space?
overflowed atomic.Bool // the queues exceed maxPDUsInMemory/maxEDUsInMemory, so we should consult the database for more
statistics *statistics.ServerStatistics // statistics about this remote server
transactionIDMutex sync.Mutex // protects transactionID
transactionID gomatrixserverlib.TransactionID // last transaction ID
notifyPDUs chan *queuedPDU // interrupts idle wait for PDUs
notifyEDUs chan *queuedEDU // interrupts idle wait for EDUs
notifyOverflow chan struct{} // interrupts idle wait for overflowed PDUs/EDUs
pendingPDUs []*queuedPDU // owned by backgroundSender goroutine once started
pendingEDUs []*queuedEDU // owned by backgroundSender goroutine once started
notifyPDUs chan *queuedPDU // interrupts idle wait for PDUs that have just been queued
notifyEDUs chan *queuedEDU // interrupts idle wait for EDUs that have just been queued
notifyOverflow chan struct{} // interrupts idle wait for overflowed PDUs/EDUs from the database
pendingPDUs []*queuedPDU // PDUs waiting to be sent, owned by backgroundSender goroutine once started
pendingEDUs []*queuedEDU // EDUs waiting to be sent, owned by backgroundSender goroutine once started
interruptBackoff chan bool // interrupts backoff
}
@ -78,7 +78,7 @@ func (oq *destinationQueue) sendEvent(event *gomatrixserverlib.HeaderedEvent, re
// later.
if err := oq.db.AssociatePDUWithDestination(
context.TODO(),
"", // the current transaction ID, TODO: do something about this
"", // TODO: remove this, as we don't need to persist the transaction ID
oq.destination, // the destination server name
receipt, // NIDs from federationsender_queue_json table
); err != nil {
@ -90,8 +90,7 @@ func (oq *destinationQueue) sendEvent(event *gomatrixserverlib.HeaderedEvent, re
if !oq.statistics.Blacklisted() {
// Wake up the queue if it's asleep.
oq.wakeQueueIfNeeded()
// If we're blocking on waiting PDUs then tell the queue that we
// have work to do.
// Queue the PDU.
select {
case oq.notifyPDUs <- &queuedPDU{
receipt: receipt,
@ -126,8 +125,7 @@ func (oq *destinationQueue) sendEDU(event *gomatrixserverlib.EDU, receipt *share
if !oq.statistics.Blacklisted() {
// Wake up the queue if it's asleep.
oq.wakeQueueIfNeeded()
// If we're blocking on waiting EDUs then tell the queue that we
// have work to do.
// Queue the EDU.
select {
case oq.notifyEDUs <- &queuedEDU{
receipt: receipt,
@ -156,7 +154,10 @@ func (oq *destinationQueue) wakeQueueIfNeeded() {
// getPendingFromDatabase will look at the database and see if
// there are any persisted events that haven't been sent to this
// destination yet. If so, they will be queued up.
// destination yet. If so, they will be queued up. This function
// MUST be called from backgroundSend() goroutine ONLY because
// it modifies oq.pendingPDUs/oq.pendingEDUs and they aren't
// mutexed.
func (oq *destinationQueue) getPendingFromDatabase() {
// Check to see if there's anything to do for this server
// in the database.