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Allow batching in JetStreamConsumer (#2686)

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This allows us to receive more than one message from NATS at a time if we want.
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Neil Alexander 2022-08-31 12:21:56 +01:00 • committed by GitHub
parent ba0b3adab4
commit 175f65407a
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19 changed files with 88 additions and 55 deletions
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7
syncapi/consumers/roomserver.go
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@ -79,15 +79,16 @@ func NewOutputRoomEventConsumer(
// Start consuming from room servers
func (s *OutputRoomEventConsumer) Start() error {
return jetstream.JetStreamConsumer(
s.ctx, s.jetstream, s.topic, s.durable, s.onMessage,
nats.DeliverAll(), nats.ManualAck(),
s.ctx, s.jetstream, s.topic, s.durable, 1,
s.onMessage, nats.DeliverAll(), nats.ManualAck(),
)
}
// onMessage is called when the sync server receives a new event from the room server output log.
// It is not safe for this function to be called from multiple goroutines, or else the
// sync stream position may race and be incorrectly calculated.
func (s *OutputRoomEventConsumer) onMessage(ctx context.Context, msg *nats.Msg) bool {
func (s *OutputRoomEventConsumer) onMessage(ctx context.Context, msgs []*nats.Msg) bool {
msg := msgs[0] // Guaranteed to exist if onMessage is called
// Parse out the event JSON
var err error
var output api.OutputEvent