[PR] Move handler structures to kopf.structs package

[kopf-archiver]

A pull request by nolar at 2020-03-25 12:23:29+00:00
Original URL: zalando-incubator/kopf#332
Merged by nolar at 2020-03-26 15:34:13+00:00

What do these changes do?

Yet another refactoring PR: just the moves of the code across modules, and some renames. No logic is changed in any way.

Description

It is done as a preparation for both the daemons (#330) and configurable state persistence (#331).

The main change: the handlers are now moved from kopf.reactor to kopf.structs — as they are no more than structs.

This allows to keep other structs (such as daemons or configs) to be also stored in kopf.structs instead of leaking into kopf.reactor and exploding it. The main different is that the kopf.reactor is for the processes and logic, while kopf.structs are for data structures with little or no logic (both reactor-involved and generic).

There are no user-facing changes or risks.

Issues/PRs

Related: #330 #331

Type of changes

• Refactoring (non-breaking change which does not alter the behaviour)

Checklist

• The code addresses only the mentioned problem, and this problem only
• I think the code is well written
• Unit tests for the changes exist
• Documentation reflects the changes
• If you provide code modification, please add yourself to CONTRIBUTORS.txt