Fix in Leases section

[henryx]

According to tests, Leases lacks of a correct integration test suite. Also, leases implementation doesn't follow current Vault implementation (see https://github.com/hashicorp/vault/blob/main/CHANGELOG.md#080-august-9th-2017 and the Vault documentation). This MR provide to fix these lacks

[tledkov]

The patch is OK with me.
Do you have any ideas why CI actions are not run on this PR?
All checks were run on old PRs (e.g.: #17)

Do you see any issues at the: https://github.com/jopenlibs/vault-java-driver/blob/master/.github/workflows/gradle.yml ?

[tledkov]

Hi @henryx.

I left some comments for the patch. Please fix ones when you have a time.
Please take a look at the proposed fix style

Not clear for me: why there are only negative tests for revoke and revokePrefix?
Or are these not negative tests, but gaps with the implementation / test environment?

Hurry up. Some fixes are required

[tledkov]

Sorry, one more comment:
I see all methods of Leases except of Leases#renew are expecting HTTP 204 (No Content) response. So, they cannot return anything. I guess the VaultResponse object as the return value is bad design for this case.

What do you think about change this API to void?

[henryx]

I think is not possible to return void. Object VaultResponse is an object that returns two data:

• REST response returned from Vault
• Number of times that has tried to contact Vault

So, is possible to return VaultResponse(null, x), but I don't think it takes any advantages. However, I think can review my opinion, because in the future I want to port entire library to Java 11 and this code can be revised

[tledkov]

@henryx thanks for contribution. The patch is merged.
Do you need a hotfix release?

[henryx]

@tledkov yes, thank you!