WIP: Atom feed for /repos/:owner_name/:name/builds

See travis-ci/travis-core#82

TODO: Link to indivisual build.
TODO: Add specs.
TODO: Review `#apply?`

lib/travis/api/app/helpers/respond_with.rb

@@ -49,7 +49,7 @@ class Travis::Api::App
         end
 
         def responders(resource, options)
-          [:Json, :Image, :Xml, :Plain].map do |name|
+          [:Atom, :Json, :Image, :Xml, :Plain].map do |name|
             Responders.const_get(name)
           end
         end

lib/travis/api/app/responders.rb

@@ -2,6 +2,7 @@ require 'travis/api/app'
 
 class Travis::Api::App
   module Responders
+    autoload :Atom,    'travis/api/app/responders/atom'
     autoload :Base,    'travis/api/app/responders/base'
     autoload :Image,   'travis/api/app/responders/image'
     autoload :Json,    'travis/api/app/responders/json'

lib/travis/api/app/responders/atom.rb

@@ -0,0 +1,63 @@
+module Travis::Api::App::Responders
+  require 'securerandom'
+
+  class Atom < Base
+    ATOM_FEED_ERB = ERB.new(File.read(__FILE__).split("__END__").last.strip)
+
+    def apply?
+      if resource.is_a?(ActiveRecord::Relation) && resource.first.is_a?(Build)
+        @builds = resource
+      end
+      super && @builds
+    end
+
+    def apply
+      super
+
+      ATOM_FEED_ERB.result(binding)
+    end
+
+    private
+
+    def content_type
+      'application/atom+xml;charset=utf-8'
+    end
+
+  end
+end
+
+__END__
+<?xml version="1.0" encoding="utf-8"?>
+ 
+<feed xmlns="http://www.w3.org/2005/Atom">
+ 
+  <title><%= @builds.first.repository.slug %> Builds</title>
+  <link href="<%= endpoint.url %>" rel = "self" />
+  <id>urn:uuid:<%= SecureRandom.uuid %></id>
+  <updated><%= DateTime.now.strftime %></updated>
+ 
+  <% @builds.each  do |build| %>
+  <entry>
+    <title><%= build.repository.slug %> Build #<%= build.number %></title>
+    <link href="" />
+    <id>urn:uuid:<%= SecureRandom.uuid %></id>
+    <updated><%= build.finished_at || build.started_at %></updated>
+    <summary type="html">
+    &lt;p&gt;
+      <%= build.commit.message %> (<%= build.commit.committer_name %>)
+      &lt;br/&gt;&lt;br/&gt;
+      State: <%= build.state %>
+      &lt;br/&gt;
+      Started at: <%= build.started_at ? build.started_at : 'not started' %>
+      &lt;br/&gt;
+      Finished at: <%= build.finished_at ? build.finished_at :
+        build.started_at ? 'still running' : 'not started' %>
+    &lt;/p&gt;
+    </summary>
+    <author>
+      <name><%= build.commit.committer_name %></name>
+    </author>
+  </entry>
+  <% end  %>
+ 
+</feed>

travis-api.gemspec

@@ -22,7 +22,8 @@ Gem::Specification.new do |s|
     "Nick Schonning",
     "Patrick Williams",
     "James Dennes",
-    "Tim Carey-Smith"
+    "Tim Carey-Smith",
+    "Hiro Asari"
   ]
 
   s.email = [
@@ -135,6 +136,7 @@ Gem::Specification.new do |s|
     "lib/travis/api/app/middleware/rewrite.rb",
     "lib/travis/api/app/middleware/scope_check.rb",
     "lib/travis/api/app/responders.rb",
+    "lib/travis/api/app/responders/atom.rb",
     "lib/travis/api/app/responders/base.rb",
     "lib/travis/api/app/responders/image.rb",
     "lib/travis/api/app/responders/json.rb",