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dont create consumer if existed

This commit is contained in:
Nam Huynh 2022-03-26 00:00:58 +07:00
parent 3fe4271f1b
commit 8446b578c2
1 changed files with 8 additions and 1 deletions
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9
jetstream_consumer.go
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@ -14,10 +14,17 @@ func (js JetStream) GetConsumerInfo(stream, name string) (*nats.ConsumerInfo, er
// AddConsumer ... // AddConsumer ...
func (js JetStream) AddConsumer(stream, subject, name string) error { func (js JetStream) AddConsumer(stream, subject, name string) error {
// Get consumer first, return if existed
consumer, err := js.GetConsumerInfo(stream, name)
if consumer != nil {
return nil
}
// Generate channel name
channel := combineStreamAndSubjectName(stream, subject) channel := combineStreamAndSubjectName(stream, subject)
// Add // Add
_, err := js.instance.AddConsumer(stream, &nats.ConsumerConfig{ _, err = js.instance.AddConsumer(stream, &nats.ConsumerConfig{
Durable: name, Durable: name,
AckPolicy: nats.AckExplicitPolicy, AckPolicy: nats.AckExplicitPolicy,
FilterSubject: channel, FilterSubject: channel,