[WIP] Replace apache with nginx

Since stackalytics requires so much RAM, we are switching to nginx in
an effort to improve performance.

Change-Id: I031b7dbd5b8163cec06950c682b951ea51fcefc4
Depends-On: Iaf67ce97b9376577c49e445c7172dc8563622dde
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

files/uwsgi.ini

@@ -1,9 +1,4 @@
 [uwsgi]
-uid = stackalytics
-gid = stackalytics
-socket = 127.0.0.1:3031
+socket = /tmp/stackalytics.sock
 pythonpath = /usr/local/lib/python2.7/dist-packages
 module = stackalytics.dashboard.web:app
-processes = 2
-threads = 1
-stats = 127.0.0.1:9191

manifests/init.pp

@@ -27,14 +27,10 @@ class stackalytics (
   $memcached_port = '11211',
   $vhost_name = $::fqdn,
 ) {
-  include ::httpd
-  include ::httpd::mod::wsgi
   include ::pip
   include ::logrotate
 
   $packages = [
-    'libapache2-mod-proxy-uwsgi',
-    'libapache2-mod-uwsgi',
     'uwsgi',
     'uwsgi-plugin-python',
   ]
@@ -51,6 +47,22 @@ class stackalytics (
     udp_port   => $memcached_port,
   }
 
+  class { '::nginx':
+    manage_repo => false,
+  }
+
+  ::nginx::resource::vhost { $vhost_name:
+    ensure => present,
+    uwsgi  => 'unix:///tmp/stackalytics.sock',
+  }
+
+  ::nginx::resource::location { $vhost_name:
+    ensure         => present,
+    location_alias => '/usr/local/lib/python2.7/dist-packages/stackalytics/dashboard/static/',
+    location       => '/static/',
+    vhost          => $vhost_name,
+  }
+
   group { 'stackalytics':
     ensure => present,
   }
@@ -201,27 +213,6 @@ class stackalytics (
     refreshonly => true,
   }
 
-  ::httpd::vhost { $vhost_name:
-    port     => 80,
-    docroot  => 'MEANINGLESS ARGUMENT',
-    priority => '50',
-    template => 'stackalytics/stackalytics.vhost.erb',
-    ssl      => true,
-  }
-
-  httpd::mod { 'proxy':
-    ensure => present,
-  }
-
-  httpd::mod { 'proxy_http':
-    ensure => present,
-  }
-
-  httpd::mod { 'proxy_uwsgi':
-    ensure  => present,
-    require => Package[$packages],
-  }
-
   ini_setting { 'sources_root':
     ensure  => present,
     notify  => Exec['stackalytics-reload'],

templates/stackalytics.vhost.erb

@@ -1,17 +0,0 @@
-<VirtualHost <%= @vhost_name %>:80>
-  ErrorLog ${APACHE_LOG_DIR}/stackalytics-error.log
-
-  LogLevel warn
-
-  CustomLog ${APACHE_LOG_DIR}/stackalytics-access.log combined
-
-  <Directory /usr/local/lib/python2.7/dist-packages/stackalytics/dashboard>
-    Require all granted
-  </Directory>
-
-  Alias /static /usr/local/lib/python2.7/dist-packages/stackalytics/dashboard/static/
-
-  ProxyPass / uwsgi://127.0.0.1:3031/ retry=0
-  ProxyPassReverse / uwsgi://127.0.0.1:3031/
-
-</VirtualHost>