Change the namespace validation for oracle metrics

[andriy-dmytruk]

Add validation that namespace doesn't start with oci_

[alvarosanchez]

Can you add some tests for the regex, please?

[andriy-dmytruk]

For some reason a namespace with a dash, like micronaut-test produced a 404 error - "invalid parameter, namespace must match [a-z][a-z0-9_]*[a-z0-9]". On the other hand, if I set the namespace to micronaut_test I always get a 400 saying namespace could not be registered.

This is weird as namespace matching ^[A-Za-z][A-Za-z0-9\\-]*[A-Za-z0-9]$ is used in PostMetricData examples.

I changed the pattern to ^[a-z][a-z0-9]*[a-z0-9]$ as it is the only one not producing any errors. But it seems strange, as there is no way to separate words now. @alvarosanchez Do you think an issue should be created to oci sdk, as this doesn't seem correct?

[alvarosanchez]

Do you think an issue should be created to oci sdk, as this doesn't seem correct?

Absolutely. Please go ahead

[andriy-dmytruk]

Seems like everything was correct in the first place. The oci sdk docs show an incorrect example of namespace, though.
The issue that I had was that I started the namespace with oci_... 😵‍ Added validation to verify that it doesn't.

[alvarosanchez]

One test failed, can you please have a look?

Also, could you please create a remote branch in this repo instead of working on a fork? If you fork, there are some GitHub actions that will fail because the secrets are not exposed to forks.

[graemerocher]

@andriy-dmytruk is this still needed?