Jetstream K/V bucket fails due to consumer name not being durable

[alecholmez]

Defect

Provided these code snippets:

	kv, err := jetstream.KeyValue("foo")
	switch {
	case errors.Is(err, nats.ErrBucketNotFound):
		return jetstream.CreateKeyValue(&nats.KeyValueConfig{
			Bucket:      "foo",
			Description: "foobar",
		})

	stuff, err := s.kv.Keys()
	switch {
	// If we find that theres no keys then init is a no-op
	case errors.Is(err, nats.ErrNoKeysFound):
		return nil
	case err != nil:
		return err
	}

I receive the following error:

nats: consumer expected to be durable but a durable name was not set

Versions of nats.go and the nats-server if one was involved:

Client library version: v1.26.0+. This bug does NOT exist in v1.25.0.

Expected result:

No errors when creating accessing k/v buckets.

Actual result:

The below error:

nats: consumer expected to be durable but a durable name was not set

[piotrpio]

I assume the version of nats-server you're using is lower than 2.9.0? If so, there was indeed a bug which caused us to use invalid subject to create the consumer on older server versions when durable was not set. I created a PR to solve this issue - #1325

In the meantime, I would encourage you to switch to newer server release (current is 2.9.18) - there were really a lot of new features and improvements throughout 2.9.x releases!

[gudron]

same problem @ github.com/nats-io/nats.go v1.27.0
on v1.25.0 - bucket watching works fine

UPD:
server version - 2.8.4

[alecholmez]

@piotrpio I was actually using server version v2.7.4 so yes you are correct! I bumped to the latest v2.9.18 and the problem was resolved.