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configcat

4.0.2
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ConfigCat SDK for Elixir. Feature Flags created by developers for developers with ❤️. ConfigCat lets you manage feature flags across frontend, backend, mobile, and desktop apps without (re)deploying code. % rollouts, user targeting, segmentation. Feature toggle SDKs for all main languages.

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configcat lib config_cat config_cat_logger.ex
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lib/config_cat/config_cat_logger.ex 

defmodule ConfigCat.ConfigCatLogger do

  @moduledoc false



  @spec debug(String.t()) :: Macro.t()

  @spec debug(String.t(), keyword()) :: Macro.t()

  defmacro debug(message, metadata \\ []) do

    quote bind_quoted: [message: message, metadata: metadata, module: __MODULE__] do

      require Logger



      Logger.debug(fn -> module.formatted_message(message, metadata) end)

    end

  end



  @spec error(String.t()) :: Macro.t()

  @spec error(String.t(), keyword()) :: Macro.t()

  defmacro error(message, metadata \\ []) do

    quote bind_quoted: [message: message, metadata: metadata, module: __MODULE__] do

      require Logger



      Logger.error(fn -> module.formatted_message(message, metadata) end)



      instance_id = Keyword.get(Logger.metadata(), :instance_id)



      if instance_id do

        ConfigCat.Hooks.invoke_on_error(instance_id, message)

      end

    end

  end



  @spec info(String.t()) :: Macro.t()

  @spec info(String.t(), keyword()) :: Macro.t()

  defmacro info(message, metadata \\ []) do

    quote bind_quoted: [message: message, metadata: metadata, module: __MODULE__] do

      require Logger



      Logger.info(fn -> module.formatted_message(message, metadata) end)

    end

  end



  @spec warning(String.t()) :: Macro.t()

  @spec warning(String.t(), keyword()) :: Macro.t()

  defmacro warning(message, metadata \\ []) do

    quote bind_quoted: [message: message, metadata: metadata, module: __MODULE__] do

      require Logger



      Logger.warning(fn -> module.formatted_message(message, metadata) end)

    end

  end



  @spec warn_offline :: String.t()

  def warn_offline do

    message = "Client is in offline mode; it cannot initiate HTTP calls."

    warning(message, event_id: 3200)

    message

  end



  @doc false

  @spec formatted_message(String.t(), keyword()) :: {String.t(), keyword()}

  def formatted_message(message, metadata) do

    logger_metadata = Logger.metadata()

    event_id = metadata[:event_id] || logger_metadata[:event_id] || 0



    {"[#{event_id}] " <> message, metadata}

  end

end