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Don't advance the consumer group when events can't be delivered. #1030

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4 changes: 3 additions & 1 deletion kafka/channel/pkg/dispatcher/dispatcher.go
Original file line number Diff line number Diff line change
Expand Up @@ -81,7 +81,9 @@ type consumerMessageHandler struct {

func (c consumerMessageHandler) Handle(ctx context.Context, message *sarama.ConsumerMessage) (bool, error) {
event := fromKafkaMessage(ctx, message)
return true, c.dispatcher.DispatchEventWithDelivery(ctx, *event, c.sub.SubscriberURI, c.sub.ReplyURI, &c.sub.Delivery)
err := c.dispatcher.DispatchEventWithDelivery(ctx, *event, c.sub.SubscriberURI, c.sub.ReplyURI, &c.sub.Delivery)
// NOTE: only return `true` here if DispatchEventWithDelivery actually delivered the message.
return err == nil, err
}

var _ kafka.KafkaConsumerHandler = (*consumerMessageHandler)(nil)
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