Http request/response handler refactoring.

HTTP Request handler now manages HTTP request and response.

* added methods to manage HTTP response headers
* added methods to manage response body
* added accessors API methods for request parameters and
  response headers and body

Author: elpaso

src/mapserver/qgis_map_serv.cpp

@@ -37,6 +37,11 @@
 #include "qgsnetworkaccessmanager.h"
 #include "qgsmaplayerregistry.h"
 #include "qgsserverlogger.h"
+#ifdef MAPSERVER_HAVE_PYTHON_PLUGINS
+#include "qgsserverplugins.h"
+#include "qgsserverfilter.h"
+#include "qgsserverinterfaceimpl.h"
+#endif
 
 #include <QDomDocument>
 #include <QNetworkDiskCache>
@@ -315,6 +320,18 @@ int main( int argc, char * argv[] )
   int logLevel = QgsServerLogger::instance()->logLevel();
   QTime time; //used for measuring request time if loglevel < 1
 
+#ifdef MAPSERVER_HAVE_PYTHON_PLUGINS
+  // Create the interface
+  QgsServerInterfaceImpl serverIface( &capabilitiesCache );
+  // Init plugins
+  if (! QgsServerPlugins::initPlugins( &serverIface ) )
+  {
+      QgsMessageLog::logMessage( "No server plugins are available", "Server", QgsMessageLog::INFO );
+  }
+  // Store plugin filters for faster access  
+  QMultiMap<int, QgsServerFilter*> pluginFilters = serverIface.filters();
+#endif
+
   while ( fcgi_accept() >= 0 )
   {
     QgsMapLayerRegistry::instance()->removeAllMapLayers();
@@ -340,6 +357,17 @@ int main( int argc, char * argv[] )
       theRequestHandler->setServiceException( e );
     }
 
+#ifdef MAPSERVER_HAVE_PYTHON_PLUGINS
+    // Set the request handler into the interface for plugins to manipulate it
+    serverIface.setRequestHandler( theRequestHandler.data() );
+    // Iterate filters and call their requestReady() method
+    QgsServerFiltersMap::const_iterator filtersIterator;
+    for( filtersIterator = pluginFilters.constBegin(); filtersIterator != pluginFilters.constEnd(); ++filtersIterator)
+    {
+      filtersIterator.value()->requestReady();
+    }
+#endif
+
     // Copy the parameters map
     QMap<QString, QString> parameterMap( theRequestHandler->parameterMap() );
 
@@ -398,6 +426,14 @@ int main( int argc, char * argv[] )
       } // end switch
     } // end if not exception raised
 
+#ifdef MAPSERVER_HAVE_PYTHON_PLUGINS
+    // Call responseReady plugin filters
+    for(filtersIterator = pluginFilters.constBegin(); filtersIterator != pluginFilters.constEnd(); ++filtersIterator)
+    {
+      filtersIterator.value()->responseReady();
+    }
+#endif
+
     theRequestHandler->sendResponse();
 
     if ( logLevel < 1 )

src/mapserver/qgsrequesthandler.h

@@ -65,7 +65,6 @@ class QgsRequestHandler
     virtual void setInfoFormat( const QString &format ) = 0;
     /**Send out HTTP headers and flush output buffer*/
     virtual void sendResponse( ) = 0;
-    virtual bool responseReady() const = 0;
     /**Pointer to last raised exception*/
     virtual bool exceptionRaised() const = 0;
     QMap<QString, QString> parameterMap( ) { return mParameterMap; }