Allow batching in JetStreamConsumer (#2686)

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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19 changed files with 88 additions and 55 deletions

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@ -67,14 +67,15 @@ func NewKeyChangeConsumer(
// Start consuming from key servers
func (t *KeyChangeConsumer) Start() error {
return jetstream.JetStreamConsumer(
t.ctx, t.jetstream, t.topic, t.durable, t.onMessage,
nats.DeliverAll(), nats.ManualAck(),
t.ctx, t.jetstream, t.topic, t.durable, 1,
t.onMessage, nats.DeliverAll(), nats.ManualAck(),
)
}
// onMessage is called in response to a message received on the
// key change events topic from the key server.
func (t *KeyChangeConsumer) onMessage(ctx context.Context, msg *nats.Msg) bool {
func (t *KeyChangeConsumer) onMessage(ctx context.Context, msgs []*nats.Msg) bool {
msg := msgs[0] // Guaranteed to exist if onMessage is called
var m api.DeviceMessage
if err := json.Unmarshal(msg.Data, &m); err != nil {
logrus.WithError(err).Errorf("failed to read device message from key change topic")