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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.
This commit is contained in:
Neil Alexander 2022-08-31 12:21:56 +01:00 • committed by GitHub
parent ba0b3adab4
commit 175f65407a
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GPG key ID: 4AEE18F83AFDEB23
19 changed files with 88 additions and 55 deletions
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7
userapi/consumers/syncapi_readupdate.go
View file

@ -56,15 +56,16 @@ func NewOutputReadUpdateConsumer(
func (s *OutputReadUpdateConsumer) Start() error {
if err := 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(),
); err != nil {
return err
}
return nil
}
func (s *OutputReadUpdateConsumer) onMessage(ctx context.Context, msg *nats.Msg) bool {
func (s *OutputReadUpdateConsumer) onMessage(ctx context.Context, msgs []*nats.Msg) bool {
msg := msgs[0] // Guaranteed to exist if onMessage is called
var read types.ReadUpdate
if err := json.Unmarshal(msg.Data, &read); err != nil {
log.WithError(err).Error("userapi clientapi consumer: message parse failure")

7
userapi/consumers/syncapi_streamevent.go
View file

@ -65,15 +65,16 @@ func NewOutputStreamEventConsumer(
func (s *OutputStreamEventConsumer) Start() error {
if err := 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(),
); err != nil {
return err
}
return nil
}
func (s *OutputStreamEventConsumer) onMessage(ctx context.Context, msg *nats.Msg) bool {
func (s *OutputStreamEventConsumer) onMessage(ctx context.Context, msgs []*nats.Msg) bool {
msg := msgs[0] // Guaranteed to exist if onMessage is called
var output types.StreamedEvent
output.Event = &gomatrixserverlib.HeaderedEvent{}
if err := json.Unmarshal(msg.Data, &output); err != nil {