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) 2004-2009 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 Atmospheric 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 "BESFileContainer.h"
00036 #include "BESFilterTransmitter.h"
00037 #include "BESSyntaxUserError.h"
00038 #include "BESResponseHandlerList.h"
00039 #include "cgi_util.h"
00040 #include "BESDataNames.h"
00041 #include "BESDebug.h"
00042 
00054 BESCgiInterface::BESCgiInterface( const string &type, DODSFilter &df )
00055     : BESInterface( &cout ),
00056       _type( type ),
00057       _df( &df )
00058 {
00059     _dhi = &_cgi_dhi ;
00060     _dhi->transmit_protocol = "HTTP" ;
00061     _transmitter = new BESFilterTransmitter( df ) ;
00062 }
00063 
00064 BESCgiInterface::~BESCgiInterface()
00065 {
00066     clean() ;
00067     if( _transmitter ) delete _transmitter ;
00068     _transmitter = 0 ;
00069 }
00070 
00082 void
00083 BESCgiInterface::build_data_request_plan()
00084 {
00085     BESDEBUG( "bes", "Building data request plan ... " << endl )
00086     string symbolic_name = name_path( _df->get_dataset_name() ) ;
00087     BESDEBUG( "bes", "  symbolic name = " << symbolic_name << endl )
00088     BESDEBUG( "bes", "  constraint = " << _df->get_ce() << endl )
00089     BESDEBUG( "bes", "  dataset name = " << _df->get_dataset_name() << endl )
00090     BESDEBUG( "bes", "  type = " << _type << endl )
00091     BESContainer *d = new BESFileContainer( symbolic_name,
00092                                             _df->get_dataset_name(),
00093                                             _type ) ;
00094     d->set_constraint( _df->get_ce() ) ;
00095 
00096     _dhi->containers.push_back( d ) ;
00097     string myaction = (string)"get." + _df->get_action() ; 
00098     _dhi->action = myaction ;
00099     _dhi->response_handler =
00100         BESResponseHandlerList::TheList()->find_handler( myaction ) ;
00101     if( !_dhi->response_handler )
00102     {
00103         BESDEBUG( "bes", "Building data request plan ... FAILED" << endl )
00104         string s = (string)"Improper command " + myaction ;
00105         throw BESSyntaxUserError( s, __FILE__, __LINE__ ) ;
00106     }
00107     BESDEBUG( "bes", "Building data request plan ... OK" << endl )
00108 }
00109 
00117 void
00118 BESCgiInterface::dump( ostream &strm ) const
00119 {
00120     strm << BESIndent::LMarg << "BESCgiInterface::dump - ("
00121                              << (void *)this << ")" << endl ;
00122     BESIndent::Indent() ;
00123     strm << BESIndent::LMarg << "data type: " << _type << endl ;
00124     strm << BESIndent::LMarg << "action: get." << _df->get_action() << endl ;
00125     strm << BESIndent::LMarg << "dataset name: "
00126                              << _df->get_dataset_name() << endl ;
00127     strm << BESIndent::LMarg << "constraint expression: "
00128                              << _df->get_ce() << endl ;
00129     BESIndent::UnIndent() ;
00130 }
00131 

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