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✨ Add ability to register runnables as pre-start hooks #2044

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✨ Add ability to register runnables as pre-start hooks #2044

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Commits on May 6, 2024

  1. feat(manager): add prestart hook support 

    When implementing a controller that uses leader election, there maybe be
work that needs to be done after winning the election but before
processing enqueued requests. For example, a controller may need to
build up an internal mapping of the current state of the cluster before
it can begin reconciling.

This changeset adds support for adding prestart hooks to
controller-runtime's manager implementation. This hook runs after the
manager has been elected leader, immediately before the leader election
controllers are started.

Related kubernetes-sigs#607
    @terinjokes
    terinjokes committed May 6, 2024
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