jianyun8023 opened a new issue #7884: URL: https://github.com/apache/pulsar/issues/7884
**Is your feature request related to a problem? Please describe.** I recently did topic level configuration. In the admin web module `org.apache.pulsar.broker.admin`, the asynchronous call between the api and the base made me feel very frustrated. The `asyncResponse` of the api layer was passed to the base layer, which made the handling of exceptions very complicated. . And this operation couples the api layer and the base layer together. I understand that base is equivalent to the service layer, and api is the interface layer, and their responsibilities should be separated. **Describe the solution you'd like** For base layer methods that support asynchronous, it is recommended to use `CompletableFuture` return instead of passing in `asyncResponse` For exceptions, normal throw is fine, no other operations are required. **Describe alternatives you've considered** no **Additional context** [`org.apache.pulsar.broker.admin.v2.Namespaces#deleteNamespace`](https://github.com/apache/pulsar/blob/master/pulsar-broker/src/main/java/org/apache/pulsar/broker/admin/v2/Namespaces.java#L1154) ```java @DELETE @Path("/{tenant}/{namespace}") @ApiOperation(value = "Delete a namespace and all the topics under it.") @ApiResponses(value = { @ApiResponse(code = 307, message = "Current broker doesn't serve the namespace"), @ApiResponse(code = 403, message = "Don't have admin permission"), @ApiResponse(code = 404, message = "Tenant or cluster or namespace doesn't exist"), @ApiResponse(code = 409, message = "Namespace is not empty") }) public void deleteNamespace(@Suspended final AsyncResponse asyncResponse, @PathParam("tenant") String tenant, @PathParam("namespace") String namespace, @QueryParam("authoritative") @DefaultValue("false") boolean authoritative) { try { validateNamespaceName(tenant, namespace); internalDeleteNamespace(asyncResponse, authoritative); } catch (WebApplicationException wae) { asyncResponse.resume(wae); } catch (Exception e) { asyncResponse.resume(new RestException(e)); } } ``` [`org.apache.pulsar.broker.admin.impl.NamespacesBase#internalDeleteNamespace`](https://github.com/apache/pulsar/blob/master/pulsar-broker/src/main/java/org/apache/pulsar/broker/admin/impl/NamespacesBase.java#L149) In `NamespacesBase#internalDeleteNamespace`, you can see that the exception handling becomes cumbersome  ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
