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Optimize inserting pending PDUs/EDUs (#2821)

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This optimizes the association of PDUs/EDUs to their destination by
inserting all destinations in one transaction.
This commit is contained in:
Till 2022-10-21 12:50:51 +02:00 • committed by GitHub
parent e98d75fd63
commit 9e4c3171da
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7 changed files with 127 additions and 119 deletions
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88
federationapi/queue/destinationqueue.go
View file

@ -76,40 +76,22 @@ func (oq *destinationQueue) sendEvent(event *gomatrixserverlib.HeaderedEvent, re
return
}
// Create a database entry that associates the given PDU NID with
// this destination queue. We'll then be able to retrieve the PDU
// later.
if err := oq.db.AssociatePDUWithDestination(
oq.process.Context(),
"", // TODO: remove this, as we don't need to persist the transaction ID
oq.destination, // the destination server name
receipt, // NIDs from federationapi_queue_json table
); err != nil {
logrus.WithError(err).Errorf("failed to associate PDU %q with destination %q", event.EventID(), oq.destination)
return
}
// Check if the destination is blacklisted. If it isn't then wake
// up the queue.
if !oq.statistics.Blacklisted() {
// If there's room in memory to hold the event then add it to the
// list.
oq.pendingMutex.Lock()
if len(oq.pendingPDUs) < maxPDUsInMemory {
oq.pendingPDUs = append(oq.pendingPDUs, &queuedPDU{
pdu: event,
receipt: receipt,
})
} else {
oq.overflowed.Store(true)
}
oq.pendingMutex.Unlock()
if !oq.backingOff.Load() {
oq.wakeQueueAndNotify()
}
// If there's room in memory to hold the event then add it to the
// list.
oq.pendingMutex.Lock()
if len(oq.pendingPDUs) < maxPDUsInMemory {
oq.pendingPDUs = append(oq.pendingPDUs, &queuedPDU{
pdu: event,
receipt: receipt,
})
} else {
oq.overflowed.Store(true)
}
oq.pendingMutex.Unlock()
if !oq.backingOff.Load() {
oq.wakeQueueAndNotify()
}
}
// sendEDU adds the EDU event to the pending queue for the destination.
@ -120,41 +102,23 @@ func (oq *destinationQueue) sendEDU(event *gomatrixserverlib.EDU, receipt *share
logrus.Errorf("attempt to send nil EDU with destination %q", oq.destination)
return
}
// Create a database entry that associates the given PDU NID with
// this destination queue. We'll then be able to retrieve the PDU
// later.
if err := oq.db.AssociateEDUWithDestination(
oq.process.Context(),
oq.destination, // the destination server name
receipt, // NIDs from federationapi_queue_json table
event.Type,
nil, // this will use the default expireEDUTypes map
); err != nil {
logrus.WithError(err).Errorf("failed to associate EDU with destination %q", oq.destination)
return
}
// Check if the destination is blacklisted. If it isn't then wake
// up the queue.
if !oq.statistics.Blacklisted() {
// If there's room in memory to hold the event then add it to the
// list.
oq.pendingMutex.Lock()
if len(oq.pendingEDUs) < maxEDUsInMemory {
oq.pendingEDUs = append(oq.pendingEDUs, &queuedEDU{
edu: event,
receipt: receipt,
})
} else {
oq.overflowed.Store(true)
}
oq.pendingMutex.Unlock()
if !oq.backingOff.Load() {
oq.wakeQueueAndNotify()
}
// If there's room in memory to hold the event then add it to the
// list.
oq.pendingMutex.Lock()
if len(oq.pendingEDUs) < maxEDUsInMemory {
oq.pendingEDUs = append(oq.pendingEDUs, &queuedEDU{
edu: event,
receipt: receipt,
})
} else {
oq.overflowed.Store(true)
}
oq.pendingMutex.Unlock()
if !oq.backingOff.Load() {
oq.wakeQueueAndNotify()
}
}
// handleBackoffNotifier is registered as the backoff notification

35
federationapi/queue/queue.go
View file

@ -24,6 +24,7 @@ import (
"github.com/getsentry/sentry-go"
"github.com/matrix-org/gomatrixserverlib"
"github.com/prometheus/client_golang/prometheus"
"github.com/sirupsen/logrus"
log "github.com/sirupsen/logrus"
"github.com/tidwall/gjson"
@ -247,11 +248,25 @@ func (oqs *OutgoingQueues) SendEvent(
}
for destination := range destmap {
if queue := oqs.getQueue(destination); queue != nil {
if queue := oqs.getQueue(destination); queue != nil && !queue.statistics.Blacklisted() {
queue.sendEvent(ev, nid)
} else {
delete(destmap, destination)
}
}
// Create a database entry that associates the given PDU NID with
// this destinations queue. We'll then be able to retrieve the PDU
// later.
if err := oqs.db.AssociatePDUWithDestinations(
oqs.process.Context(),
destmap,
nid, // NIDs from federationapi_queue_json table
); err != nil {
logrus.WithError(err).Errorf("failed to associate PDUs %q with destinations", nid)
return err
}
return nil
}
@ -321,11 +336,27 @@ func (oqs *OutgoingQueues) SendEDU(
}
for destination := range destmap {
if queue := oqs.getQueue(destination); queue != nil {
if queue := oqs.getQueue(destination); queue != nil && !queue.statistics.Blacklisted() {
queue.sendEDU(e, nid)
} else {
delete(destmap, destination)
}
}
// Create a database entry that associates the given PDU NID with
// this destination queue. We'll then be able to retrieve the PDU
// later.
if err := oqs.db.AssociateEDUWithDestinations(
oqs.process.Context(),
destmap, // the destination server name
nid, // NIDs from federationapi_queue_json table
e.Type,
nil, // this will use the default expireEDUTypes map
); err != nil {
logrus.WithError(err).Errorf("failed to associate EDU with destinations")
return err
}
return nil
}

60
federationapi/queue/queue_test.go
View file

@ -25,6 +25,10 @@ import (
"go.uber.org/atomic"
"gotest.tools/v3/poll"
"github.com/matrix-org/gomatrixserverlib"
"github.com/pkg/errors"
"github.com/stretchr/testify/assert"
"github.com/matrix-org/dendrite/federationapi/api"
"github.com/matrix-org/dendrite/federationapi/statistics"
"github.com/matrix-org/dendrite/federationapi/storage"
@ -34,9 +38,6 @@ import (
"github.com/matrix-org/dendrite/setup/process"
"github.com/matrix-org/dendrite/test"
"github.com/matrix-org/dendrite/test/testrig"
"github.com/matrix-org/gomatrixserverlib"
"github.com/pkg/errors"
"github.com/stretchr/testify/assert"
)
func mustCreateFederationDatabase(t *testing.T, dbType test.DBType, realDatabase bool) (storage.Database, *process.ProcessContext, func()) {
@ -158,30 +159,36 @@ func (d *fakeDatabase) GetPendingEDUs(ctx context.Context, serverName gomatrixse
return edus, nil
}
func (d *fakeDatabase) AssociatePDUWithDestination(ctx context.Context, transactionID gomatrixserverlib.TransactionID, serverName gomatrixserverlib.ServerName, receipt *shared.Receipt) error {
func (d *fakeDatabase) AssociatePDUWithDestinations(ctx context.Context, destinations map[gomatrixserverlib.ServerName]struct{}, receipt *shared.Receipt) error {
d.dbMutex.Lock()
defer d.dbMutex.Unlock()
if _, ok := d.pendingPDUs[receipt]; ok {
if _, ok := d.associatedPDUs[serverName]; !ok {
d.associatedPDUs[serverName] = make(map[*shared.Receipt]struct{})
for destination := range destinations {
if _, ok := d.associatedPDUs[destination]; !ok {
d.associatedPDUs[destination] = make(map[*shared.Receipt]struct{})
}
d.associatedPDUs[destination][receipt] = struct{}{}
}
d.associatedPDUs[serverName][receipt] = struct{}{}
return nil
} else {
return errors.New("PDU doesn't exist")
}
}
func (d *fakeDatabase) AssociateEDUWithDestination(ctx context.Context, serverName gomatrixserverlib.ServerName, receipt *shared.Receipt, eduType string, expireEDUTypes map[string]time.Duration) error {
func (d *fakeDatabase) AssociateEDUWithDestinations(ctx context.Context, destinations map[gomatrixserverlib.ServerName]struct{}, receipt *shared.Receipt, eduType string, expireEDUTypes map[string]time.Duration) error {
d.dbMutex.Lock()
defer d.dbMutex.Unlock()
if _, ok := d.pendingEDUs[receipt]; ok {
if _, ok := d.associatedEDUs[serverName]; !ok {
d.associatedEDUs[serverName] = make(map[*shared.Receipt]struct{})
for destination := range destinations {
if _, ok := d.associatedEDUs[destination]; !ok {
d.associatedEDUs[destination] = make(map[*shared.Receipt]struct{})
}
d.associatedEDUs[destination][receipt] = struct{}{}
}
d.associatedEDUs[serverName][receipt] = struct{}{}
return nil
} else {
return errors.New("EDU doesn't exist")
@ -821,15 +828,15 @@ func TestSendPDUBatches(t *testing.T) {
<-pc.WaitForShutdown()
}()
destinations := map[gomatrixserverlib.ServerName]struct{}{destination: {}}
// Populate database with > maxPDUsPerTransaction
pduMultiplier := uint32(3)
for i := 0; i < maxPDUsPerTransaction*int(pduMultiplier); i++ {
ev := mustCreatePDU(t)
headeredJSON, _ := json.Marshal(ev)
nid, _ := db.StoreJSON(pc.Context(), string(headeredJSON))
now := gomatrixserverlib.AsTimestamp(time.Now())
transactionID := gomatrixserverlib.TransactionID(fmt.Sprintf("%d-%d", now, i))
db.AssociatePDUWithDestination(pc.Context(), transactionID, destination, nid)
err := db.AssociatePDUWithDestinations(pc.Context(), destinations, nid)
assert.NoError(t, err, "failed to associate PDU with destinations")
}
ev := mustCreatePDU(t)
@ -865,13 +872,15 @@ func TestSendEDUBatches(t *testing.T) {
<-pc.WaitForShutdown()
}()
destinations := map[gomatrixserverlib.ServerName]struct{}{destination: {}}
// Populate database with > maxEDUsPerTransaction
eduMultiplier := uint32(3)
for i := 0; i < maxEDUsPerTransaction*int(eduMultiplier); i++ {
ev := mustCreateEDU(t)
ephemeralJSON, _ := json.Marshal(ev)
nid, _ := db.StoreJSON(pc.Context(), string(ephemeralJSON))
db.AssociateEDUWithDestination(pc.Context(), destination, nid, ev.Type, nil)
err := db.AssociateEDUWithDestinations(pc.Context(), destinations, nid, ev.Type, nil)
assert.NoError(t, err, "failed to associate EDU with destinations")
}
ev := mustCreateEDU(t)
@ -907,23 +916,23 @@ func TestSendPDUAndEDUBatches(t *testing.T) {
<-pc.WaitForShutdown()
}()
destinations := map[gomatrixserverlib.ServerName]struct{}{destination: {}}
// Populate database with > maxEDUsPerTransaction
multiplier := uint32(3)
for i := 0; i < maxPDUsPerTransaction*int(multiplier)+1; i++ {
ev := mustCreatePDU(t)
headeredJSON, _ := json.Marshal(ev)
nid, _ := db.StoreJSON(pc.Context(), string(headeredJSON))
now := gomatrixserverlib.AsTimestamp(time.Now())
transactionID := gomatrixserverlib.TransactionID(fmt.Sprintf("%d-%d", now, i))
db.AssociatePDUWithDestination(pc.Context(), transactionID, destination, nid)
err := db.AssociatePDUWithDestinations(pc.Context(), destinations, nid)
assert.NoError(t, err, "failed to associate PDU with destinations")
}
for i := 0; i < maxEDUsPerTransaction*int(multiplier); i++ {
ev := mustCreateEDU(t)
ephemeralJSON, _ := json.Marshal(ev)
nid, _ := db.StoreJSON(pc.Context(), string(ephemeralJSON))
db.AssociateEDUWithDestination(pc.Context(), destination, nid, ev.Type, nil)
err := db.AssociateEDUWithDestinations(pc.Context(), destinations, nid, ev.Type, nil)
assert.NoError(t, err, "failed to associate EDU with destinations")
}
ev := mustCreateEDU(t)
@ -960,13 +969,12 @@ func TestExternalFailureBackoffDoesntStartQueue(t *testing.T) {
dest := queues.getQueue(destination)
queues.statistics.ForServer(destination).Failure()
destinations := map[gomatrixserverlib.ServerName]struct{}{destination: {}}
ev := mustCreatePDU(t)
headeredJSON, _ := json.Marshal(ev)
nid, _ := db.StoreJSON(pc.Context(), string(headeredJSON))
now := gomatrixserverlib.AsTimestamp(time.Now())
transactionID := gomatrixserverlib.TransactionID(fmt.Sprintf("%d-%d", now, 1))
db.AssociatePDUWithDestination(pc.Context(), transactionID, destination, nid)
err := db.AssociatePDUWithDestinations(pc.Context(), destinations, nid)
assert.NoError(t, err, "failed to associate PDU with destinations")
pollEnd := time.Now().Add(3 * time.Second)
runningCheck := func(log poll.LogT) poll.Result {
@ -988,6 +996,7 @@ func TestQueueInteractsWithRealDatabasePDUAndEDU(t *testing.T) {
t.Parallel()
failuresUntilBlacklist := uint32(1)
destination := gomatrixserverlib.ServerName("remotehost")
destinations := map[gomatrixserverlib.ServerName]struct{}{destination: {}}
test.WithAllDatabases(t, func(t *testing.T, dbType test.DBType) {
db, fc, queues, pc, close := testSetup(failuresUntilBlacklist, false, t, dbType, true)
// NOTE : These defers aren't called if go test is killed so the dbs may not get cleaned up.
@ -1009,7 +1018,8 @@ func TestQueueInteractsWithRealDatabasePDUAndEDU(t *testing.T) {
edu := mustCreateEDU(t)
ephemeralJSON, _ := json.Marshal(edu)
nid, _ := db.StoreJSON(pc.Context(), string(ephemeralJSON))
db.AssociateEDUWithDestination(pc.Context(), destination, nid, edu.Type, nil)
err = db.AssociateEDUWithDestinations(pc.Context(), destinations, nid, edu.Type, nil)
assert.NoError(t, err, "failed to associate EDU with destinations")
checkBlacklisted := func(log poll.LogT) poll.Result {
if fc.txCount.Load() == failuresUntilBlacklist {