Add enable_proxy_headers_parsing option

The patch enables paste middleware to handle SSL requests through
HTTPProxyToWSGI middleware.

Change-Id: Ifbed564e234303a4abbc5d2a90266c8c34e6516c

manifests/api.pp

@@ -45,6 +45,11 @@
 #   to make mistral-api be a web app using apache mod_wsgi.
 #   Defaults to '$::mistral::params::api_service_name'
 #
+# [*enable_proxy_headers_parsing*]
+#   (Optional) Enable paste middleware to handle SSL requests through
+#   HTTPProxyToWSGI middleware.
+#   Defaults to $::os_service_default.
+#
 class mistral::api (
   $allow_action_execution_deletion = $::os_service_default,
   $api_workers                     = $::os_workers,
@@ -54,6 +59,7 @@ class mistral::api (
   $manage_service                  = true,
   $package_ensure                  = present,
   $service_name                    = $::mistral::params::api_service_name,
+  $enable_proxy_headers_parsing    = $::os_service_default,
 ) inherits mistral::params {
 
   include ::mistral::params
@@ -113,4 +119,8 @@ as a standalone service, or httpd for being run by a httpd server")
     'api/allow_action_execution_deletion'  : value => $allow_action_execution_deletion;
   }
 
+  oslo::middleware { 'mistral_config':
+    enable_proxy_headers_parsing => $enable_proxy_headers_parsing,
+  }
+
 }

releasenotes/notes/add_enable_proxy_header_parsing-8613ae19724ef119.yaml

@@ -0,0 +1,4 @@
+---
+features:
+  - This adds the enable_proxy_headers parsing option which is used by the
+    http_proxy_to_wsgi middleware.

spec/classes/mistral_api_spec.rb

@@ -8,6 +8,7 @@ describe 'mistral::api' do
       :manage_service                  => true,
       :bind_host                       => '127.0.0.1',
       :bind_port                       => '1234',
+      :enable_proxy_headers_parsing    => false,
       :allow_action_execution_deletion => false}
   end
 
@@ -21,6 +22,7 @@ describe 'mistral::api' do
       it { is_expected.to contain_mistral_config('api/api_workers').with_value( params[:api_workers] ) }
       it { is_expected.to contain_mistral_config('api/host').with_value( params[:bind_host] ) }
       it { is_expected.to contain_mistral_config('api/port').with_value( params[:bind_port] ) }
+      it { is_expected.to contain_mistral_config('oslo_middleware/enable_proxy_headers_parsing').with_value( params[:enable_proxy_headers_parsing] ) }
       it { is_expected.to contain_mistral_config('api/allow_action_execution_deletion').with_value( params[:allow_action_execution_deletion] ) }
 
     end
@@ -46,6 +48,14 @@ describe 'mistral::api' do
       end
     end
 
+    context 'with enable_proxy_headers_parsing' do
+      before do
+        params.merge!({:enable_proxy_headers_parsing => true })
+      end
+
+      it { is_expected.to contain_mistral_config('oslo_middleware/enable_proxy_headers_parsing').with_value( params[:enable_proxy_headers_parsing] ) }
+    end
+
     context 'with disabled service managing' do
       before do
         params.merge!({