BESDapError.cc

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00001 // BESDapError.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 <sstream>
00034 #include <iostream>
00035 
00036 using std::ostringstream;
00037 
00038 #include "BESDapError.h"
00039 #include "BESContextManager.h"
00040 #include "BESDapErrorInfo.h"
00041 
00064 int
00065 BESDapError::convert_error_code( int error_code, int current_error_type )
00066 {
00067     if( current_error_type == BES_INTERNAL_FATAL_ERROR )
00068         return current_error_type ;
00069     switch( error_code )
00070     {
00071         case undefined_error:
00072         case unknown_error:
00073         {
00074             return BES_INTERNAL_ERROR ;
00075             break ;
00076         }
00077         case internal_error:
00078         {
00079             return BES_INTERNAL_FATAL_ERROR ;
00080             break ;
00081         }
00082         case no_such_file:
00083         {
00084             return BES_NOT_FOUND_ERROR ;
00085             break ;
00086         }
00087         case no_such_variable:
00088         case malformed_expr:
00089         {
00090             return BES_SYNTAX_USER_ERROR ;
00091             break ;
00092         }
00093         case no_authorization:
00094         case cannot_read_file:
00095         case dummy_message:
00096         {
00097             return BES_FORBIDDEN_ERROR ;
00098             break ;
00099         }
00100         default:
00101         {
00102             return BES_INTERNAL_ERROR ;
00103             break ;
00104         }
00105     }
00106     return BES_INTERNAL_ERROR ;
00107 }
00108 
00118 int
00119 BESDapError::handleException( BESError &e, BESDataHandlerInterface &dhi )
00120 {
00121     // If we are handling errors in a dap2 context, then create a
00122     // DapErrorInfo object to transmit/print the error as a dap2
00123     // response.
00124     bool found = false ;
00125     // I changed 'dap_format' to 'errors' in the following line. jhrg 10/6/08
00126     string context = BESContextManager::TheManager()->get_context( "errors", found ) ;
00127     if( context == "dap2" )
00128     {
00129         ErrorCode ec = unknown_error ;
00130         BESDapError *de = dynamic_cast<BESDapError*>( &e);
00131         if( de )
00132         {
00133             ec = de->get_error_code() ;
00134         }
00135         e.set_error_type( convert_error_code( ec, e.get_error_type() ) ) ;
00136         dhi.error_info = new BESDapErrorInfo( ec, e.get_message() ) ;
00137 
00138         return e.get_error_type() ;
00139     }
00140     else
00141     {
00142         // If we are not in a dap2 context and the exception is a dap
00143         // handler exception, then convert the error message to include the
00144         // error code. If it is or is not a dap exception, we simply return
00145         // that the exception was not handled.
00146         BESError *e_p = &e ;
00147         BESDapError *de = dynamic_cast<BESDapError*>( e_p );
00148         if( de )
00149         {
00150             ostringstream s;
00151             s << "libdap exception building response"
00152                 << ": error_code = " << de->get_error_code()
00153                 << ": " << de->get_message() ;
00154             e.set_message( s.str() ) ;
00155             e.set_error_type( convert_error_code( de->get_error_code(),
00156                                                   e.get_error_type() ) ) ;
00157         }
00158     }
00159     return 0 ;
00160 }
00161 
00168 void
00169 BESDapError::dump( ostream &strm ) const
00170 {
00171     strm << BESIndent::LMarg << "BESDapError::dump - ("
00172          << (void *)this << ")" << endl ;
00173     BESIndent::Indent() ;
00174     strm << BESIndent::LMarg << "error code = " << get_error_code() << endl ;
00175     BESError::dump( strm ) ;
00176     BESIndent::UnIndent() ;
00177 }
00178 

Generated on Thu Feb 11 09:13:14 2010 for OPeNDAP Hyrax Back End Server (BES) by  doxygen 1.4.7