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mongodb_driver

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The MongoDB driver for Elixir

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mongodb_driver lib mongo write_concern.ex
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lib/mongo/write_concern.ex 

defmodule Mongo.WriteConcern do

  @moduledoc false



  import Keywords



  @spec write_concern(keyword) :: nil | map

  def write_concern(opts) do

    %{

      w: Keyword.get(opts, :w),

      j: Keyword.get(opts, :j),

      wtimeout: Keyword.get(opts, :wtimeout)

    }

    |> filter_nils()

    |> filter_empty()

  end



  @spec filter_empty(map) :: nil | map

  defp filter_empty(%{} = map) when map == %{}, do: nil

  defp filter_empty(%{} = map), do: map



  @spec acknowledged?(nil | keyword | map) :: boolean

  def acknowledged?(nil), do: true



  def acknowledged?(%{} = write_concern), do: Map.get(write_concern, :w) != 0



  def acknowledged?(write_concern) when is_list(write_concern), do: Keyword.get(write_concern, :w) != 0

end