API of validation

[wpjunior]

Motivation

some users complain that our RPaaS API does not have a validation of nginx.conf files, resulting in a rollout with pod errors, them the responsibility to rollback is totally assigned to the end-user.

Our goal there is to notify user that their conf are invalid, them provides a early feedback and avoid tension of a possible rollback.

New flow:

sequenceDiagram
    actor User
    participant RPaaS API
    participant RPaaS operator
    participant Job CRD
    participant POD
    User->>RPaaS API: post changes of instance
    RPaaS API->>RPaaS operator: Create a RpaasValidation CRD with all spec, then wait status changes
    RPaaS operator->>Job CRD: create a single kubernetes job with image and configmap to validate, using the same logic to generate nginx CRD
    Job CRD->>POD: runs nginx validation command
    Job CRD->>RPaaS operator: watch result of Job CRD and update status
    RPaaS operator->>RPaaS API: Status updated with result of job
    RPaaS API->>User: feedback of changes
    RPaaS API->>RPaaS operator: if validation is sucessfuly: proceed with changes of RpaaSInstance

[crgisch]

LGTM 👍