Add auth to Fastly purge requests

Author: jerodsanto

config/config.exs

@@ -19,6 +19,7 @@ config :changelog, ChangelogWeb.Endpoint,
 config :changelog,
   buffer_token: SecretOrEnv.get("BUFFER_TOKEN"),
   cm_api_token: Base.encode64("#{SecretOrEnv.get("CM_API_TOKEN")}:x"),
+  fastly_token: SecretOrEnv.get("FASTLY_TOKEN"),
   github_api_token: SecretOrEnv.get("GITHUB_API_TOKEN"),
   hn_user: SecretOrEnv.get("HN_USER"),
   hn_pass: SecretOrEnv.get("HN_PASS"),

lib/changelog/fastly.ex

@@ -137,8 +137,9 @@ defmodule Changelog.Fastly do
   end
 
   def purge(url) do
+    auth = Application.get_env(:changelog, :fastly_token)
     %{path: path, host: host} = URI.parse(url)
     Logger.info("Fastly: Purging #{url}")
-    HTTP.request(:purge, endpoint(path), "", host: host)
+    HTTP.request(:purge, endpoint(path), "", [{"Host", host}  , {"Fastly-Key", auth}])
   end
 end

lib/changelog/http.ex

@@ -6,9 +6,9 @@ defmodule Changelog.HTTP do
 
   @options [ssl: [{:middlebox_comp_mode, false}]]
 
-  def request(method, body \\ "", headers \\ [], options \\ []) do
-    case HTTPoison.request(method, body, headers, options) do
-      {:error, _} -> HTTPoison.request(method, body, headers, with_shared_options(options))
+  def request(method, url, body \\ "", headers \\ [], options \\ []) do
+    case HTTPoison.request(method, url, body, headers, options) do
+      {:error, _} -> HTTPoison.request(method, url, body, headers, with_shared_options(options))
       response -> response
     end
   end

test/changelog/fastly_test.exs

@@ -7,10 +7,10 @@ defmodule Changelog.FastlyTest do
 
   describe "purge/1" do
   	test "when given a url string" do
-  		with_mock(HTTP, request: fn _, _, _, _ -> %{status_code: 200} end) do
+  		with_mock(HTTP, request: fn _, _, _, _-> %{status_code: 200} end) do
   			url = "https://cdn.changelog.com/uploads/podcast/1/the-changelog-1.mp3"
   			Changelog.Fastly.purge(url)
-  			assert called(HTTP.request(:purge, "https://api.fastly.com/uploads/podcast/1/the-changelog-1.mp3", "", host: "cdn.changelog.com"))
+  			assert called(HTTP.request(:purge, "https://api.fastly.com/uploads/podcast/1/the-changelog-1.mp3", "", :_))
   		end
   	end
   end