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Bonny: Kubernetes Operator Development Framework. Extend Kubernetes with Elixir

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bonny lib bonny server watcher resource_version.ex
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lib/bonny/server/watcher/resource_version.ex 

defmodule Bonny.Server.Watcher.ResourceVersion do

  @moduledoc "Get the resourceVersion for a `K8s.Operation`"



  @client Application.get_env(:bonny, :k8s_client, K8s.Client)



  @spec get(K8s.Operation.t()) :: {:ok, binary} | {:error, atom}

  def get(%K8s.Operation{} = operation) do

    cluster = Bonny.Config.cluster_name()



    case @client.run(operation, cluster, params: %{limit: 1}) do

      {:ok, response} ->

        {:ok, extract_rv(response)}



      _ ->

        {:error, :resource_version_not_found}

    end

  end



  @spec extract_rv(map()) :: binary() | {:gone, binary()}

  def extract_rv(%{"metadata" => %{"resourceVersion" => rv}}), do: rv

  def extract_rv(%{"message" => message}), do: {:gone, message}

end