# PerfAgent

[![Hex pm](http://img.shields.io/hexpm/v/perf_agent.svg?style=flat)](https://hex.pm/packages/perf_agent) [![hex.pm downloads](https://img.shields.io/hexpm/dt/perf_agent.svg?style=flat)](https://hex.pm/packages/httpoison) [![circle.ci builds](https://circleci.com/gh/perflabs/phoenix-perf/tree/master.svg?style=shield&circle-token=21f056185e48e4d08cc62909f972ae235affacd8)](https://circleci.com/gh/perflabs/phoenix-perf)

`perf_agent` is a plug that will record timing and status codes of the connections in the Phoenix framework and send the data to Perf. We then run analytics on that data to generate metrics and alerts.

Right now perf is in private beta but if you're interested in an API key, feel free to email us at [hi@perf.sh](hi@perf.sh)

## Installation

* Add the agent to your list of dependencies in `mix.exs` via Hex

  ```elixir
  def deps do
    [{:perf_agent, "~> 0.1.2"}]
  end
  ```

  * Run `mix deps.get` in your Terminal to install all dependencies

* Ensure `perf_agent` is started before your application

  ```elixir
  def application do
    [applications: [:perf_agent]]
  end
  ```

* Add your Perf API Key to your `config.exs`

  ```elixir
  config :perf_agent, api_key: System.get_env("PERF_API_KEY")
  ```

* Add the plug to a pipeline in your router

  ```elixir
  defmodule MyApp.Router do
    use Perf.Web, :router

    pipeline :api do
      plug :accepts, ["json"]
      plug PerfAgent.Plug.Phoenix
    end

    scope "/api/v1", MyApp do
        pipe_through :api
    end

  end
  ```

  * In this example we've added it to an API pipeline