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Hydrate destination queues at startup (#1179)

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* Hydrate destination queues at startup

* Review comments
This commit is contained in:
Neil Alexander 2020-07-03 11:49:49 +01:00 committed by GitHub
parent 9dffeb9b67
commit 1773fd84b7
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GPG key ID: 4AEE18F83AFDEB23
7 changed files with 89 additions and 1 deletions
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6
federationsender/queue/destinationqueue.go
View file

@ -250,6 +250,12 @@ func (oq *destinationQueue) backgroundSend() {
oq.cleanPendingEDUs()
oq.cleanPendingInvites()
return
} else {
// We haven't been told to give up terminally yet but we still have
// PDUs waiting to be sent. By sending a message into the wake chan,
// the next loop iteration will try processing these PDUs again,
// subject to the backoff.
oq.wakeServerCh <- true
}
} else if transaction {
// If we successfully sent the transaction then clear out

11
federationsender/queue/queue.go
View file

@ -51,7 +51,7 @@ func NewOutgoingQueues(
statistics *types.Statistics,
signing *SigningInfo,
) *OutgoingQueues {
return &OutgoingQueues{
queues := &OutgoingQueues{
db: db,
rsAPI: rsAPI,
origin: origin,
@ -60,6 +60,15 @@ func NewOutgoingQueues(
signing: signing,
queues: map[gomatrixserverlib.ServerName]*destinationQueue{},
}
// Look up which servers we have pending items for and then rehydrate those queues.
if serverNames, err := db.GetPendingServerNames(context.Background()); err == nil {
for _, serverName := range serverNames {
queues.getQueue(serverName).wakeQueueIfNeeded()
}
} else {
log.WithError(err).Error("Failed to get server names for destination queue hydration")
}
return queues
}
// TODO: Move this somewhere useful for other components as we often need to ferry these 3 variables

1
federationsender/storage/interface.go
View file

@ -31,4 +31,5 @@ type Database interface {
GetNextTransactionPDUs(ctx context.Context, serverName gomatrixserverlib.ServerName, limit int) (gomatrixserverlib.TransactionID, []*gomatrixserverlib.HeaderedEvent, error)
CleanTransactionPDUs(ctx context.Context, serverName gomatrixserverlib.ServerName, transactionID gomatrixserverlib.TransactionID) error
GetPendingPDUCount(ctx context.Context, serverName gomatrixserverlib.ServerName) (int64, error)
GetPendingServerNames(ctx context.Context) ([]gomatrixserverlib.ServerName, error)
}

28
federationsender/storage/postgres/queue_pdus_table.go
View file

@ -63,6 +63,9 @@ const selectQueuePDUsCountSQL = "" +
"SELECT COUNT(*) FROM federationsender_queue_pdus" +
" WHERE server_name = $1"
const selectQueueServerNamesSQL = "" +
"SELECT DISTINCT server_name FROM federationsender_queue_pdus"
type queuePDUsStatements struct {
insertQueuePDUStmt *sql.Stmt
deleteQueueTransactionPDUsStmt *sql.Stmt
@ -70,6 +73,7 @@ type queuePDUsStatements struct {
selectQueuePDUsByTransactionStmt *sql.Stmt
selectQueueReferenceJSONCountStmt *sql.Stmt
selectQueuePDUsCountStmt *sql.Stmt
selectQueueServerNamesStmt *sql.Stmt
}
func (s *queuePDUsStatements) prepare(db *sql.DB) (err error) {
@ -95,6 +99,9 @@ func (s *queuePDUsStatements) prepare(db *sql.DB) (err error) {
if s.selectQueuePDUsCountStmt, err = db.Prepare(selectQueuePDUsCountSQL); err != nil {
return
}
if s.selectQueueServerNamesStmt, err = db.Prepare(selectQueueServerNamesSQL); err != nil {
return
}
return
}
@ -190,3 +197,24 @@ func (s *queuePDUsStatements) selectQueuePDUs(
return result, rows.Err()
}
func (s *queuePDUsStatements) selectQueueServerNames(
ctx context.Context, txn *sql.Tx,
) ([]gomatrixserverlib.ServerName, error) {
stmt := sqlutil.TxStmt(txn, s.selectQueueServerNamesStmt)
rows, err := stmt.QueryContext(ctx)
if err != nil {
return nil, err
}
defer internal.CloseAndLogIfError(ctx, rows, "queueFromStmt: rows.close() failed")
var result []gomatrixserverlib.ServerName
for rows.Next() {
var serverName gomatrixserverlib.ServerName
if err = rows.Scan(&serverName); err != nil {
return nil, err
}
result = append(result, serverName)
}
return result, rows.Err()
}

8
federationsender/storage/postgres/storage.go
View file

@ -264,3 +264,11 @@ func (d *Database) GetPendingPDUCount(
) (int64, error) {
return d.selectQueuePDUCount(ctx, nil, serverName)
}
// GetPendingServerNames returns the server names that have PDUs
// waiting to be sent.
func (d *Database) GetPendingServerNames(
ctx context.Context,
) ([]gomatrixserverlib.ServerName, error) {
return d.selectQueueServerNames(ctx, nil)
}

28
federationsender/storage/sqlite3/queue_pdus_table.go
View file

@ -64,6 +64,9 @@ const selectQueuePDUsCountSQL = "" +
"SELECT COUNT(*) FROM federationsender_queue_pdus" +
" WHERE server_name = $1"
const selectQueueServerNamesSQL = "" +
"SELECT DISTINCT server_name FROM federationsender_queue_pdus"
type queuePDUsStatements struct {
insertQueuePDUStmt *sql.Stmt
deleteQueueTransactionPDUsStmt *sql.Stmt
@ -71,6 +74,7 @@ type queuePDUsStatements struct {
selectQueuePDUsByTransactionStmt *sql.Stmt
selectQueueReferenceJSONCountStmt *sql.Stmt
selectQueuePDUsCountStmt *sql.Stmt
selectQueueServerNamesStmt *sql.Stmt
}
func (s *queuePDUsStatements) prepare(db *sql.DB) (err error) {
@ -96,6 +100,9 @@ func (s *queuePDUsStatements) prepare(db *sql.DB) (err error) {
if s.selectQueuePDUsCountStmt, err = db.Prepare(selectQueuePDUsCountSQL); err != nil {
return
}
if s.selectQueueServerNamesStmt, err = db.Prepare(selectQueueServerNamesSQL); err != nil {
return
}
return
}
@ -188,3 +195,24 @@ func (s *queuePDUsStatements) selectQueuePDUs(
return result, rows.Err()
}
func (s *queuePDUsStatements) selectQueueServerNames(
ctx context.Context, txn *sql.Tx,
) ([]gomatrixserverlib.ServerName, error) {
stmt := sqlutil.TxStmt(txn, s.selectQueueServerNamesStmt)
rows, err := stmt.QueryContext(ctx)
if err != nil {
return nil, err
}
defer internal.CloseAndLogIfError(ctx, rows, "queueFromStmt: rows.close() failed")
var result []gomatrixserverlib.ServerName
for rows.Next() {
var serverName gomatrixserverlib.ServerName
if err = rows.Scan(&serverName); err != nil {
return nil, err
}
result = append(result, serverName)
}
return result, rows.Err()
}

8
federationsender/storage/sqlite3/storage.go
View file

@ -270,3 +270,11 @@ func (d *Database) GetPendingPDUCount(
) (int64, error) {
return d.selectQueuePDUCount(ctx, nil, serverName)
}
// GetPendingServerNames returns the server names that have PDUs
// waiting to be sent.
func (d *Database) GetPendingServerNames(
ctx context.Context,
) ([]gomatrixserverlib.ServerName, error) {
return d.selectQueueServerNames(ctx, nil)
}