Log events that trigger reconciles

[asmacdo]

As an controller author/user, it would be helpful to know which event has triggered a reconcile, especially in situations where a reconcile can be triggered by changes to multiple resources.

What I have in mind is to log the event in the EnqueueRequestForObject event handlers: https://github.com/kubernetes-sigs/controller-runtime/blob/master/pkg/handler/enqueue.go#L37-L91

[asmacdo]

I brought this up at the sig meeting, and I got the go-ahead to implement this. It was requested that this info be logged at a very high level.

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[camilamacedo86]

Based on the comment I brought this up at the sig meeting, and I got the go-ahead to implement this. It was requested that this info be logged at a very high level. I am labelling it as help-wanted and triage/accepted.

[coderanger]

On my list to shift upstream is this code https://github.com/coderanger/controller-utils/blob/e26c5734ecc941a03e9bf8798886a419e5202126/predicates/update_debug.go

Would probably answer this need?

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[k8s-ci-robot]

@fejta-bot: Closing this issue.

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