* Add http_cfg_prepend option

Author: abraham1901

manifests/config.pp

@@ -64,6 +64,7 @@
   $gzip_proxied                   = 'off',
   $gzip_types                     = undef,
   $gzip_vary                      = 'off',
+  $http_cfg_prepend               = false,
   $http_cfg_append                = false,
   $http_tcp_nodelay               = 'on',
   $http_tcp_nopush                = 'off',
@@ -176,6 +177,12 @@
   }
   validate_string($proxy_buffers)
   validate_string($proxy_buffer_size)
+  if ($http_cfg_prepend != false) {
+    if !(is_hash($http_cfg_prepend) or is_array($http_cfg_prepend)) {
+      fail('$http_cfg_prepend must be either a hash or array')
+    }
+  }
+
   if ($http_cfg_append != false) {
     if !(is_hash($http_cfg_append) or is_array($http_cfg_append)) {
       fail('$http_cfg_append must be either a hash or array')

manifests/init.pp

@@ -39,6 +39,7 @@
   $fastcgi_cache_path             = undef,
   $fastcgi_cache_use_stale        = undef,
   $gzip                           = undef,
+  $http_cfg_prepend               = undef,
   $http_cfg_append                = undef,
   $http_tcp_nodelay               = undef,
   $http_tcp_nopush                = undef,
@@ -245,6 +246,7 @@
       fastcgi_cache_use_stale        => $fastcgi_cache_use_stale,
       gzip                           => $gzip,
       http_access_log                => $http_access_log,
+      http_cfg_prepend                => $http_cfg_prepend,
       http_cfg_append                => $http_cfg_append,
       http_tcp_nodelay               => $http_tcp_nodelay,
       http_tcp_nopush                => $http_tcp_nopush,

spec/classes/config_spec.rb

@@ -383,6 +383,34 @@
           value: false,
           notmatch: %r{fastcgi_cache_use_stale}
         },
+        {
+          title: 'should contain ordered appended directives from hash',
+          attr: 'http_cfg_prepend',
+          value: { 'test1' => 'test value 1', 'test2' => 'test value 2', 'allow' => 'test value 3' },
+          match: [
+            '  allow test value 3;',
+            '  test1 test value 1;',
+            '  test2 test value 2;'
+          ]
+        },
+        {
+          title: 'should contain duplicate appended directives from list of hashes',
+          attr: 'http_cfg_prepend',
+          value: [['allow', 'test value 1'], ['allow', 'test value 2']],
+          match: [
+            '  allow test value 1;',
+            '  allow test value 2;'
+          ]
+        },
+        {
+          title: 'should contain duplicate appended directives from array values',
+          attr: 'http_cfg_prepend',
+          value: { 'test1' => ['test value 1', 'test value 2', 'test value 3'] },
+          match: [
+            '  test1 test value 1;',
+            '  test1 test value 2;'
+          ]
+        },
         {
           title: 'should contain ordered appended directives from hash',
           attr: 'http_cfg_append',

templates/conf.d/nginx.conf.erb

@@ -36,6 +36,14 @@ events {
 }
 
 http {
+<% if @http_cfg_append -%>
+  <%- field_width = @http_cfg_prepend.inject(0) { |l,(k,v)| k.size > l ? k.size : l } -%>
+  <%- @http_cfg_prepend.sort_by{|k,v| k}.each do |key,value| -%>
+  <%- Array(value).each do |asubvalue| -%>
+  <%= sprintf("%-*s", field_width, key) %> <%= asubvalue %>;
+  <%- end -%>
+  <%- end -%>
+<% end -%>
   include       <%= @conf_dir %>/mime.types;
   default_type  application/octet-stream;
 <% if @log_format -%>