Signed-off-by: Paul Gier <paul.gier@datastax.com>
This is just a minor improvement to the error handling of one of the bash scripts
### Motivation
Currently if you run `./scripts/pulsar/prepare_helm_release.sh` and the pulsar namespace does not currently exist, you get several error messages that make it not that clear what still needs to be done next.
```
generate the token keys for the pulsar cluster
The private key and public key are generated to /var/folders/cn/r5tb0zln1bgbfzz_7x72tgzm0000gn/T/tmp.ITrq1a4C and /var/folders/cn/r5tb0zln1bgbfzz_7x72tgzm0000gn/T/tmp.qi0dl2WO successfully.
error: failed to create secret namespaces "pulsar" not found
generate the tokens for the super-users: proxy-admin,broker-admin,admin
generate the token for proxy-admin
pulsar-dev-token-asymmetric-key
kubectl get -n pulsar secrets pulsar-dev-token-asymmetric-key -o jsonpath={.data.PRIVATEKEY} | base64 --decode > /var/folders/cn/r5tb0zln1bgbfzz_7x72tgzm0000gn/T/tmp.CikEhIxe
Error from server (NotFound): namespaces "pulsar" not found
generate the token for broker-admin
pulsar-dev-token-asymmetric-key
kubectl get -n pulsar secrets pulsar-dev-token-asymmetric-key -o jsonpath={.data.PRIVATEKEY} | base64 --decode > /var/folders/cn/r5tb0zln1bgbfzz_7x72tgzm0000gn/T/tmp.G1PU9MMj
Error from server (NotFound): namespaces "pulsar" not found
generate the token for admin
pulsar-dev-token-asymmetric-key
kubectl get -n pulsar secrets pulsar-dev-token-asymmetric-key -o jsonpath={.data.PRIVATEKEY} | base64 --decode > /var/folders/cn/r5tb0zln1bgbfzz_7x72tgzm0000gn/T/tmp.HddlCq8e
Error from server (NotFound): namespaces "pulsar" not found
-------------------------------------
The jwt token secret keys are generated under:
- 'pulsar-dev-token-asymmetric-key'
The jwt tokens for superusers are generated and stored as below:
- 'proxy-admin':secret('pulsar-dev-token-proxy-admin')
- 'broker-admin':secret('pulsar-dev-token-broker-admin')
- 'admin':secret('pulsar-dev-token-admin')
```
### Modifications
I added a check for the existence of the namespace which fails immediately instead of continuing, and added an error message that describes what the problem is and how to resolve it.
```
error: failed to get namespace 'pulsar'
please check that this namespace exists, or use the '-c' option to create it
```
### Verifying this change
- [X] Make sure that the change passes the CI checks.
a2d3f3ef41