add /ping to wake Heroku app see: https://github.com/dwyl/ping

README.md

@@ -15,6 +15,7 @@ you can setup in ***5 minutes***.
 <!-- uncomment when service is working ...
 [![Inline docs](http://inch-ci.org/github/dwyl/auth.svg?branch=master&style=flat-square)](http://inch-ci.org/github/dwyl/auth)
 -->
+![wake-sleeping-heroku-app](https://dwylauth.herokuapp.com/ping)
 
 </div>
 

lib/auth_web/controllers/ping_controller.ex

@@ -0,0 +1,8 @@
+defmodule AuthWeb.PingController do
+  use AuthWeb, :controller
+
+  # see: github.com/dwyl/ping
+  def ping(conn, params) do
+    Ping.render_pixel(conn, params)
+  end
+end

lib/auth_web/router.ex

@@ -24,6 +24,9 @@ defmodule AuthWeb.Router do
     # get "/auth/password/new", AuthController, :password_input
     post "/auth/password/create", AuthController, :password_create
     post "/auth/password/verify", AuthController, :password_prompt
+
+    # https://github.com/dwyl/ping
+    get "/ping", PingController, :ping
   end
 
   pipeline :auth do

mix.lock

@@ -45,6 +45,7 @@
   "phoenix_html": {:hex, :phoenix_html, "2.14.2", "b8a3899a72050f3f48a36430da507dd99caf0ac2d06c77529b1646964f3d563e", [:mix], [{:plug, "~> 1.5", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "58061c8dfd25da5df1ea0ca47c972f161beb6c875cd293917045b92ffe1bf617"},
   "phoenix_live_reload": {:hex, :phoenix_live_reload, "1.2.2", "38d94c30df5e2ef11000697a4fbe2b38d0fbf79239d492ff1be87bbc33bc3a84", [:mix], [{:file_system, "~> 0.2.1 or ~> 0.3", [hex: :file_system, repo: "hexpm", optional: false]}, {:phoenix, "~> 1.4", [hex: :phoenix, repo: "hexpm", optional: false]}], "hexpm", "a3dec3d28ddb5476c96a7c8a38ea8437923408bc88da43e5c45d97037b396280"},
   "phoenix_pubsub": {:hex, :phoenix_pubsub, "2.0.0", "a1ae76717bb168cdeb10ec9d92d1480fec99e3080f011402c0a2d68d47395ffb", [:mix], [], "hexpm", "c52d948c4f261577b9c6fa804be91884b381a7f8f18450c5045975435350f771"},
+  "ping": {:hex, :ping, "1.0.1", "1f44c7b7151af18627edbd7946a376935871f285fc9c11e9f16ddb1555ea65b5", [:mix], [{:plug, "~> 1.10.1", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "c1421bebcb6601e7fb1158700ca99eb2dc0976b45fe2a26023db5a9318aadfa6"},
   "plug": {:hex, :plug, "1.10.3", "c9cebe917637d8db0e759039cc106adca069874e1a9034fd6e3fdd427fd3c283", [:mix], [{:mime, "~> 1.0", [hex: :mime, repo: "hexpm", optional: false]}, {:plug_crypto, "~> 1.1.1 or ~> 1.2", [hex: :plug_crypto, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "01f9037a2a1de1d633b5a881101e6a444bcabb1d386ca1e00bb273a1f1d9d939"},
   "plug_cowboy": {:hex, :plug_cowboy, "2.3.0", "149a50e05cb73c12aad6506a371cd75750c0b19a32f81866e1a323dda9e0e99d", [:mix], [{:cowboy, "~> 2.7", [hex: :cowboy, repo: "hexpm", optional: false]}, {:plug, "~> 1.7", [hex: :plug, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "bc595a1870cef13f9c1e03df56d96804db7f702175e4ccacdb8fc75c02a7b97e"},
   "plug_crypto": {:hex, :plug_crypto, "1.1.2", "bdd187572cc26dbd95b87136290425f2b580a116d3fb1f564216918c9730d227", [:mix], [], "hexpm", "6b8b608f895b6ffcfad49c37c7883e8df98ae19c6a28113b02aa1e9c5b22d6b5"},

test/auth_web/controllers/ping_controller_test.exs

@@ -0,0 +1,10 @@
+defmodule AuthWeb.PingControllerTest do
+  use AuthWeb.ConnCase
+
+  test "GET /ping (GIF) renders 1x1 pixel", %{conn: conn} do
+    conn = get(conn, Routes.ping_path(conn, :ping))
+    assert conn.status == 200
+    assert conn.state == :sent
+    assert conn.resp_body =~ <<71, 73, 70, 56, 57>>
+  end
+end