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Robust user authentication solution

Security advisory: This version has known vulnerabilities. View advisories
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pow lib pow store base.ex
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lib/pow/store/base.ex 

defmodule Pow.Store.Base do

  @moduledoc """

  Used to set up API for key-value cache store.



  ## Usage



      defmodule MyApp.CredentialsStore do

        use Pow.Store.Base,

          ttl: :timer.minutes(30),

          namespace: "credentials"

      end

  """

  alias Pow.{Config, Store.Backend.EtsCache}



  @callback put(Config.t(), binary(), any()) :: :ok

  @callback delete(Config.t(), binary()) :: :ok

  @callback get(Config.t(), binary()) :: any() | :not_found

  @callback keys(Config.t()) :: [any()]



  @doc false

  defmacro __using__(defaults) do

    quote do

      @behaviour unquote(__MODULE__)



      @spec put(Config.t(), binary(), any()) :: :ok

      def put(config, key, value),

        do: unquote(__MODULE__).put(config, backend_config(config), key, value)



      @spec delete(Config.t(), binary()) :: :ok

      def delete(config, key),

        do: unquote(__MODULE__).delete(config, backend_config(config), key)



      @spec get(Config.t(), binary()) :: any() | :not_found

      def get(config, key),

        do: unquote(__MODULE__).get(config, backend_config(config), key)



      @spec keys(Config.t()) :: [any()]

      def keys(config),

        do: unquote(__MODULE__).keys(config, backend_config(config))



      defp backend_config(config) do

        [

          ttl: Config.get(config, :ttl, unquote(defaults[:ttl])),

          namespace: Config.get(config, :namespace, unquote(defaults[:namespace]))

        ]

      end



      defoverridable unquote(__MODULE__)

    end

  end



  @doc false

  @spec put(Config.t(), Config.t(), binary(), any()) :: :ok

  def put(config, backend_config, key, value) do

    store(config).put(backend_config, key, value)

  end



  @doc false

  @spec delete(Config.t(), Config.t(), binary()) :: :ok

  def delete(config, backend_config, key) do

    store(config).delete(backend_config, key)

  end



  @doc false

  @spec get(Config.t(), Config.t(), binary()) :: any() | :not_found

  def get(config, backend_config, key) do

    store(config).get(backend_config, key)

  end



  @doc false

  @spec keys(Config.t(), Config.t()) :: [any()]

  def keys(config, backend_config) do

    store(config).keys(backend_config)

  end



  defp store(config) do

    Config.get(config, :backend, EtsCache)

  end

end