qgswcs.cpp

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/***************************************************************************
                              qgswcs.cpp
                              -------------------------
  begin                : January 16 , 2017
  copyright            : (C) 2013 by René-Luc D'Hont  ( parts from qgswcsserver )
                         (C) 2017 by David Marteau
  email                : rldhont at 3liz dot com
                         david dot marteau at 3liz dot com
 ***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#include "qgsmodule.h"
#include "qgswcsdescribecoverage.h"
#include "qgswcsgetcapabilities.h"
#include "qgswcsgetcoverage.h"
#include "qgswcsutils.h"
 
#include <QString>
 
using namespace Qt::StringLiterals;
 
#define QSTR_COMPARE( str, lit ) ( str.compare( QLatin1String( lit ), Qt::CaseInsensitive ) == 0 )
 
namespace QgsWcs
{

  class Service : public QgsService
  {
    public:
      Service( QgsServerInterface *serverIface )
        : mServerIface( serverIface )
      {}
 
      QString name() const override { return u"WCS"_s; }
      QString version() const override { return implementationVersion(); }
 
      void executeRequest( const QgsServerRequest &request, QgsServerResponse &response, const QgsProject *project ) override
      {
        Q_UNUSED( project )
 
        const QgsServerRequest::Parameters params = request.parameters();
        QString versionString = params.value( "VERSION" );
 
        // Set the default version
        if ( versionString.isEmpty() )
        {
          versionString = version();
        }
 
        // Get the request
        const QString req = params.value( u"REQUEST"_s );
        if ( req.isEmpty() )
        {
          throw QgsServiceException( u"OperationNotSupported"_s, u"Please add or check the value of the REQUEST parameter"_s, 501 );
        }
 
        if ( QSTR_COMPARE( req, "GetCapabilities" ) )
        {
          writeGetCapabilities( mServerIface, project, versionString, request, response );
        }
        else if ( QSTR_COMPARE( req, "DescribeCoverage" ) )
        {
          writeDescribeCoverage( mServerIface, project, versionString, request, response );
        }
        else if ( QSTR_COMPARE( req, "GetCoverage" ) )
        {
          writeGetCoverage( mServerIface, project, versionString, request, response );
        }
        else
        {
          // Operation not supported
          throw QgsServiceException( u"OperationNotSupported"_s, u"Request %1 is not supported"_s.arg( req ), 501 );
        }
      }
 
    private:
      QgsServerInterface *mServerIface = nullptr;
  };
 
 
} // namespace QgsWcs

class QgsWcsModule : public QgsServiceModule
{
  public:
    void registerSelf( QgsServiceRegistry &registry, QgsServerInterface *serverIface ) override
    {
      QgsDebugMsgLevel( u"WCSModule::registerSelf called"_s, 2 );
      registry.registerService( new QgsWcs::Service( serverIface ) );
    }
};
 
 
// Entry points
QGISEXTERN QgsServiceModule *QGS_ServiceModule_Init()
{
  static QgsWcsModule module;
  return &module;
}
QGISEXTERN void QGS_ServiceModule_Exit( QgsServiceModule * )
{
  // Nothing to do
}