Story (Required)

The purpose of this story is to implement the new redis-controller package. We need it because it will bring the redis/redis-HA code into alignment with the described operator redesign. This story will represent the end-to-end effort involved in writing the redis-controller package, including unit tests and kuttl tests (potentially)

Background (Required)

The idea behind this story is to create a self-contained controller package for the redis-controller, that can be developed independently of the rest of the operator codebase. This includes consolidating all constants, helper functions, reconciliation functions etc that act upon redis resources into this package. This firmly establishes a clear responsibility on this package, and makes it the one that issues all commands on redis/redis-HA resources. This establishes clear input/output expectations from this package and allows for comprehensive testing. 

Out of scope

n/a

Approach (Required)

• set-up redis-controller with apt log context
• consolidate helper functions related to controller resources into appropriate util.go/resource file
• create dedicated constants.go file for controller constants
• identify list of all resources this controller needs to manage
• implement reconciliation functions for all concerned controller resources
• implement overall reconciliation function for controller
• create separate function to trigger deletion of all resources (if required)
• Write unit tests for all functions 
• Write controller specific kuttl tests if applicable and place under test/controller/app-controller

use https://github.com/jaideepr97/argocd-operator-rewrite/tree/main/controllers/argocd/redis for reference

Use best practices outlined in design doc to make error handling & logging decisions 

Dependencies

https://issues.redhat.com/browse/GITOPS-3117

https://issues.redhat.com/browse/GITOPS-3118

https://issues.redhat.com/browse/GITOPS-3119

https://issues.redhat.com/browse/GITOPS-3120

https://issues.redhat.com/browse/GITOPS-3121

https://issues.redhat.com/browse/GITOPS-3122

Acceptance Criteria (Mandatory)

• redis-controller package is implemented end-to-end
• unit tests added for each function
• kuttl tests added for redis-controller specific scenarios that don't involve other controllers

INVEST Checklist

Dependencies identified

Blockers noted and expected delivery timelines set

Design is implementable

Acceptance criteria agreed upon

Story estimated

Legend

Unknown

Verified

Unsatisfied

Done Checklist

• Code is completed, reviewed, documented and checked in
• Unit and integration test automation have been delivered and running cleanly in continuous integration/staging/canary environment
• Continuous Delivery pipeline(s) is able to proceed with new code included
• Customer facing documentation, API docs etc. are produced/updated, reviewed and published
• Acceptance criteria are met