Shawyeok opened a new pull request, #23254:
URL: https://github.com/apache/pulsar/pull/23254
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### Motivation
When `allowAutoSubscriptionCreation` is set to `false`, creating a consumer
for a subscription that does not exist does not throw a
`SubscriptionNotFoundException`. Instead, it throws a `PulsarClientException`.
This behavior complicates determining whether the subscription exists,
requiring users to perform checks like
`getRootCause(e).getMessage().matches(".*Subscription .*does not exist.*")`
before #22164. Even after #22164, while the root cause becomes
`SubscriptionNotFoundException`, additional handling is still necessary.
```java
try {
Consumer<byte[]> consumer = pulsarClient.newConsumer()
.topic("public/default/subscription-auto-creation-disabled")
.subscriptionName("test")
.subscriptionType(SubscriptionType.Exclusive)
.subscribe();
} catch (PulsarClientException.SubscriptionNotFoundException e) {
// never reached here
} catch (PulsarClientException e) {
getRootCause(e).getMessage().matches(".*Subscription .*does not
exist.*"); // before #22164
getRootCause(e) instanceof
PulsarClientException.SubscriptionNotFoundException; // after #22164, there is
another approach
}
```
### Modifications
This change modifies the code to throw `SubscriptionNotFoundException`
directly when attempting to create a consumer for a non-existent subscription.
This exception is a subclass of `PulsarClientException`, ensuring backward
compatibility and providing a clearer error handling path for users.
### Verifying this change
- [x] Ensure that the change passes the CI checks.
This PR also updates the corresponding test in
`org.apache.pulsar.client.api.MultiTopicsConsumerTest#testSubscriptionNotFound`.
### Does this pull request potentially affect one of the following parts:
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*If the box was checked, please highlight the changes*
- [ ] Dependencies (add or upgrade a dependency)
- [ ] The public API
- [ ] The schema
- [ ] The default values of configurations
- [ ] The threading model
- [ ] The binary protocol
- [ ] The REST endpoints
- [ ] The admin CLI options
- [ ] The metrics
- [ ] Anything that affects deployment
### Documentation
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- [ ] `doc` <!-- Your PR contains doc changes. -->
- [ ] `doc-required` <!-- Your PR changes impact docs and you will update
later -->
- [x] `doc-not-needed` <!-- Your PR changes do not impact docs -->
- [ ] `doc-complete` <!-- Docs have been already added -->
### Matching PR in forked repository
PR in forked repository: https://github.com/Shawyeok/pulsar/pull/17
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