add parameter to overwrite/add wsgi process options

Add parameter to apache_wsgi to allow overwrite
and/or add additional wsgi process options.

This possibility was added to openstacklib
with Change-Id: I41914ce3361988d5db1695f09d21209772fdf548

Change-Id: I2bcd2068f2d2968a63c29247d4e65815be33b176

manifests/wsgi/apache.pp

@@ -70,6 +70,14 @@
 #     apache::vhost ssl parameters.
 #     Optional. Default to apache::vhost 'ssl_*' defaults.
 #
+#   [*custom_wsgi_process_options*]
+#     (optional) gives you the oportunity to add custom process options or to
+#     overwrite the default options for the WSGI main process.
+#     eg. to use a virtual python environment for the WSGI process
+#     you could set it to:
+#     { python-path => '/my/python/virtualenv' }
+#     Defaults to {}
+#
 # == Dependencies
 #
 #   requires Class['apache'] & Class['gnocchi']
@@ -97,6 +105,7 @@ class gnocchi::wsgi::apache (
   $wsgi_process_display_name   = undef,
   $threads                     = 1,
   $priority                    = '10',
+  $custom_wsgi_process_options = {},
 ) {
 
   include ::gnocchi::deps
@@ -131,5 +140,6 @@ class gnocchi::wsgi::apache (
     wsgi_script_dir             => $::gnocchi::params::gnocchi_wsgi_script_path,
     wsgi_script_file            => 'app',
     wsgi_script_source          => $::gnocchi::params::gnocchi_wsgi_script_source,
+    custom_wsgi_process_options => $custom_wsgi_process_options,
   }
 }

releasenotes/notes/wsgi_process_options-c96a71aca0c2e1e5.yaml

@@ -0,0 +1,4 @@
+---
+features:
+  - Add parameter to wsgi::apache to allow overwrite
+    and/or add additional wsgi process options.

spec/classes/gnocchi_wsgi_apache_spec.rb

@@ -22,6 +22,7 @@ describe 'gnocchi::wsgi::apache' do
         :wsgi_script_dir             => platform_params[:wsgi_script_path],
         :wsgi_script_file            => 'app',
         :wsgi_script_source          => platform_params[:wsgi_script_source],
+        :custom_wsgi_process_options => {},
       )}
     end
 
@@ -35,6 +36,9 @@ describe 'gnocchi::wsgi::apache' do
           :workers                   => 8,
           :wsgi_process_display_name => 'gnocchi',
           :threads                   => 2,
+          :custom_wsgi_process_options => {
+            'python_path' => '/my/python/path',
+          },
         }
       end
 
@@ -58,6 +62,9 @@ describe 'gnocchi::wsgi::apache' do
         :wsgi_script_dir           => platform_params[:wsgi_script_path],
         :wsgi_script_file          => 'app',
         :wsgi_script_source        => platform_params[:wsgi_script_source],
+        :custom_wsgi_process_options => {
+          'python_path' => '/my/python/path',
+        },
       )}
     end
   end