BESCgiInterface.cc

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00001 // BESCgiInterface.cc
00002 
00003 // This file is part of bes, A C++ back-end server implementation framework
00004 // for the OPeNDAP Data Access Protocol.
00005 
00006 // Copyright (c) 2004,2005 University Corporation for Atmospheric Research
00007 // Author: Patrick West <pwest@ucar.edu> and Jose Garcia <jgarcia@ucar.edu>
00008 //
00009 // This library is free software; you can redistribute it and/or
00010 // modify it under the terms of the GNU Lesser General Public
00011 // License as published by the Free Software Foundation; either
00012 // version 2.1 of the License, or (at your option) any later version.
00013 // 
00014 // This library is distributed in the hope that it will be useful,
00015 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00016 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00017 // Lesser General Public License for more details.
00018 // 
00019 // You should have received a copy of the GNU Lesser General Public
00020 // License along with this library; if not, write to the Free Software
00021 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00022 //
00023 // You can contact University Corporation for Atmospheric Research at
00024 // 3080 Center Green Drive, Boulder, CO 80301
00025  
00026 // (c) COPYRIGHT University Corporation for Atmostpheric Research 2004-2005
00027 // Please read the full copyright statement in the file COPYRIGHT_UCAR.
00028 //
00029 // Authors:
00030 //      pwest       Patrick West <pwest@ucar.edu>
00031 //      jgarcia     Jose Garcia <jgarcia@ucar.edu>
00032 
00033 #include "BESCgiInterface.h"
00034 #include "DODSFilter.h"
00035 #include "BESFilterTransmitter.h"
00036 #include "BESHandlerException.h"
00037 #include "BESResponseHandlerList.h"
00038 #include "cgi_util.h"
00039 #include "BESDataNames.h"
00040 #include "BESDebug.h"
00041 
00053 BESCgiInterface::BESCgiInterface( const string &type, DODSFilter &df )
00054     : _type( type ),
00055       _df( &df )
00056 {
00057     _dhi.transmit_protocol = "HTTP" ;
00058     _transmitter = new BESFilterTransmitter( df ) ;
00059 }
00060 
00061 BESCgiInterface::~BESCgiInterface()
00062 {
00063     clean() ;
00064     if( _transmitter ) delete _transmitter ;
00065     _transmitter = 0 ;
00066 }
00067 
00079 void
00080 BESCgiInterface::build_data_request_plan()
00081 {
00082     BESDEBUG( "Building data request plan ... " << endl )
00083     string symbolic_name = name_path( _df->get_dataset_name() ) ;
00084     BESDEBUG( "  symbolic name = " << symbolic_name << endl )
00085     BESDEBUG( "  constraint = " << _df->get_ce() << endl )
00086     BESDEBUG( "  dataset name = " << _df->get_dataset_name() << endl )
00087     BESDEBUG( "  type = " << _type << endl )
00088     BESContainer d( symbolic_name ) ;
00089     d.set_constraint( _df->get_ce() ) ;
00090     d.set_real_name ( _df->get_dataset_name() ) ;
00091     d.set_container_type( _type ) ;
00092     d.set_valid_flag( true ) ;
00093 
00094     _dhi.containers.push_back( d ) ;
00095     string myaction = (string)"get." + _df->get_action() ; 
00096     _dhi.action = myaction ;
00097     _dhi.response_handler =
00098         BESResponseHandlerList::TheList()->find_handler( myaction ) ;
00099     if( !_dhi.response_handler )
00100     {
00101         BESDEBUG( "Building data request plan ... FAILED" << endl )
00102         string s = (string)"Improper command " + myaction ;
00103         throw BESHandlerException( s, __FILE__, __LINE__ ) ;
00104     }
00105     BESDEBUG( "Building data request plan ... OK" << endl )
00106 }
00107 
00115 void
00116 BESCgiInterface::dump( ostream &strm ) const
00117 {
00118     strm << BESIndent::LMarg << "BESCgiInterface::dump - ("
00119                              << (void *)this << ")" << endl ;
00120     BESIndent::Indent() ;
00121     strm << BESIndent::LMarg << "data type: " << _type << endl ;
00122     strm << BESIndent::LMarg << "action: get." << _df->get_action() << endl ;
00123     strm << BESIndent::LMarg << "dataset name: "
00124                              << _df->get_dataset_name() << endl ;
00125     strm << BESIndent::LMarg << "constraint expression: "
00126                              << _df->get_ce() << endl ;
00127     BESIndent::UnIndent() ;
00128 }
00129 

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