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http_client

0.2.3
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http_client lib http_client.ex
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lib/http_client.ex 

defmodule HttpClient do

  @moduledoc false

  alias HttpClient.Instrumenter

  alias HttpClient.RateLimiter



  @callback get(String.t()) :: {:ok, any()} | {:error, any()}

  @callback get(String.t(), list()) :: {:ok, any()} | {:error, any()}

  @callback get(String.t(), list(), Keyword.t()) :: {:ok, any()} | {:error, any()}



  @callback post(String.t(), String.t()) :: {:ok, any()} | {:error, any()}

  @callback post(String.t(), String.t(), list()) :: {:ok, any()} | {:error, any()}

  @callback post(String.t(), String.t(), list(), list()) :: {:ok, any()} | {:error, any()}



  @callback put(String.t(), String.t()) :: {:ok, any()} | {:error, any()}

  @callback put(String.t(), String.t(), list()) :: {:ok, any()} | {:error, any()}

  @callback put(String.t(), String.t(), list(), list()) :: {:ok, any()} | {:error, any()}



  @callback delete(String.t()) :: {:ok, any()} | {:error, any()}

  @callback delete(String.t(), list()) :: {:ok, any()} | {:error, any()}

  @callback delete(String.t(), list(), Keyword.t()) :: {:ok, any()} | {:error, any()}



  def get(url), do: request(:get, [url])



  def get(url, headers), do: request(:get, [url, headers])



  def get(url, headers, options), do: request(:get, [url, headers, options])



  def post(url, body), do: request(:post, [url, body])



  def post(url, body, headers), do: request(:post, [url, body, headers])



  def post(url, body, headers, options), do: request(:post, [url, body, headers, options])



  def put(url, body), do: request(:put, [url, body])



  def put(url, body, headers), do: request(:put, [url, body, headers])



  def put(url, body, headers, options), do: request(:put, [url, body, headers, options])



  def delete(url), do: request(:delete, [url])



  def delete(url, headers), do: request(:delete, [url, headers])



  def delete(url, headers, options), do: request(:delete, [url, headers, options])



  defp request(method, [url | _] = args) do

    :ok = RateLimiter.rate_limit(url)



    fn -> apply(impl(), method, args) end

    |> :timer.tc()

    |> Instrumenter.instrument(url)

  end



  defp impl, do: Application.get_env(:http_client, :http_client_impl, HTTPoison)

end