[CLI-1884] show total topic count of cluster when run kafka cluster describe/update

[MuweiHe]

Checklist

1. [CRUCIAL] Is the change for CP or CCloud functionalities that are already live in prod?
   • yes: ok

What

show total topic count of a cluster in an environment when run kafka cluster describe/update.

References

Test & Review

mhe@C02DV0KVMD6T cli % confluent kafka cluster describe
+-------------------+---------------------------------------------------------+
| ID                | lkc-k86dn6                                              |
| Name              | metrics-2                                               |
| Type              | DEDICATED                                               |
| Ingress           |                                                      50 |
| Egress            |                                                     150 |
| Storage           | Infinite                                                |
| Provider          | aws                                                     |
| Availability      | single-zone                                             |
| Region            | us-west-2                                               |
| Status            | UP                                                      |
| Endpoint          | SASL_SSL://pkc-qpg8d.us-west-2.aws.confluent.cloud:9092 |
| REST Endpoint     | https://pkc-qpg8d.us-west-2.aws.confluent.cloud:443     |
| Cluster Size      |                                                       1 |
| Total Topic Count |                                                       4 |
+-------------------+---------------------------------------------------------+

mhe@C02DV0KVMD6T cli % confluent kafka cluster describe lkc-v77zqz
+---------------+---------------------------------------------------------+
| ID            | lkc-v77zqz                                              |
| Name          | hello                                                   |
| Type          | STANDARD                                                |
| Ingress       |                                                     100 |
| Egress        |                                                     100 |
| Storage       | Infinite                                                |
| Provider      | aws                                                     |
| Availability  | single-zone                                             |
| Region        | us-west-2                                               |
| Status        | UP                                                      |
| Endpoint      | SASL_SSL://pkc-pgq85.us-west-2.aws.confluent.cloud:9092 |
| REST Endpoint | https://pkc-pgq85.us-west-2.aws.confluent.cloud:443     |
| Topic Count   |                                                      13 |
+---------------+---------------------------------------------------------+

mhe@C02DV0KVMD6T cli % confluent kafka cluster describe lkc-6kk97q --environment env-2mdy1  
+---------------+---------------------------------------------------------+
| ID            | lkc-6kk97q                                              |
| Name          | sales092020                                             |
| Type          | BASIC                                                   |
| Ingress       |                                                     100 |
| Egress        |                                                     100 |
| Storage       | 5 TB                                                    |
| Provider      | aws                                                     |
| Availability  | single-zone                                             |
| Region        | us-west-2                                               |
| Status        | UP                                                      |
| Endpoint      | SASL_SSL://pkc-pgq85.us-west-2.aws.confluent.cloud:9092 |
| REST Endpoint | https://pkc-pgq85.us-west-2.aws.confluent.cloud:443     |
| Topic Count   |                                                       1 |
+---------------+---------------------------------------------------------+

[Brian Strauch (brianstrauch)]

Why are we putting this behind the --all flag? Why not show it all of the time? (Also, the --all flag is deprecated so we shouldn't add on to it)

[MuweiHe]

Why are we putting this behind the --all flag? Why not show it all of the time? (Also, the --all flag is deprecated so we shouldn't add on to it)

would this be a breaking change? if not and if we don't mind the time consumed on one extra rest call, then sure we can show it all the time

[MuweiHe]

Why are we putting this behind the --all flag? Why not show it all of the time? (Also, the --all flag is deprecated so we shouldn't add on to it)

Updated to always print topic count.

[Brian Strauch (brianstrauch)]

Is this the same endpoint we call for confluent kafka topic list? Maybe we should write a plugin called confluent-kafka-topic-count.sh that simply runs confluent kafka topic list -o json | grep name | wc -l.

I think it would be wise to avoid making more than one API call per command if we can avoid it, as you mentioned above. I'd like to see what Ethan Ruhe (@ethanruhe) thinks when he gets back.

[MuweiHe]

Talked to David and Ethan. agreed that one more call is fine. Ideally we only want 1, and when we need ~5 calls it's better to make it a plugin