* Some fixes we did in server upstream to pkg
- reduce formatting calls where they are not necessary
- remove casts where they are not necessary
- switch to consts where possible.
* nit
* 1more
This augments the injection codegen with the capability to produce a duck.InformerFactory
attached to context for each type that we process.
Now a `duck.InformerFactory` for "Addressable" can be produced by "Get"ing it from the context.
This is triggered by placing `// +genduck` on the type that implements `duck.Implementable`.
There are a number of notable differences:
* Selector is part of Spec not Status,
* Selector is structured vs. `string`,
* The Replicas in Spec is a pointer.
Markus Thömmes
Victor Agababov
Matt Moore
Matt Moore
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