OPeNDAP Hyrax Back End Server (BES) Updated for version 3.8.3
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00001 // BESBasicInterface.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 <iostream> 00034 #include <sstream> 00035 00036 using std::endl ; 00037 using std::stringstream ; 00038 00039 #include "BESBasicInterface.h" 00040 #include "BESInterface.h" 00041 #include "BESLog.h" 00042 #include "BESDebug.h" 00043 #include "BESReturnManager.h" 00044 #include "BESSyntaxUserError.h" 00045 #include "BESInternalError.h" 00046 #include "BESAggFactory.h" 00047 #include "BESAggregationServer.h" 00048 #include "BESTransmitterNames.h" 00049 #include "BESDataNames.h" 00050 00057 BESBasicInterface::BESBasicInterface( ostream *strm ) 00058 : BESInterface( strm ) 00059 { 00060 } 00061 00062 BESBasicInterface::~BESBasicInterface() 00063 { 00064 } 00065 00074 int 00075 BESBasicInterface::execute_request( const string &from ) 00076 { 00077 return BESInterface::execute_request( from ) ; 00078 } 00079 00089 void 00090 BESBasicInterface::initialize() 00091 { 00092 // dhi has not been filled in at this point, so let's set a default 00093 // transmitter given the protocol. The transmitter might change after 00094 // parsing a request and given a return manager to use. This is done in 00095 // build_data_plan. 00096 // 00097 // The reason I moved this from the build_data_plan method is because a 00098 // registered initialization routine might throw an exception and we 00099 // will need to transmit the exception info, which needs a transmitter. 00100 // If an exception happens before this then the exception info is just 00101 // printed to cout (see BESInterface::transmit_data()). -- pcw 09/05/06 00102 BESDEBUG( "bes", "Finding " << BASIC_TRANSMITTER << " transmitter ... " << endl ) ; 00103 _transmitter = BESReturnManager::TheManager()->find_transmitter( BASIC_TRANSMITTER ) ; 00104 if( !_transmitter ) 00105 { 00106 string s = (string)"Unable to find transmitter " 00107 + BASIC_TRANSMITTER ; 00108 throw BESInternalError( s, __FILE__, __LINE__ ) ; 00109 } 00110 BESDEBUG( "bes", "OK" << endl ) ; 00111 00112 BESInterface::initialize() ; 00113 } 00114 00117 void 00118 BESBasicInterface::validate_data_request() 00119 { 00120 BESInterface::validate_data_request() ; 00121 } 00122 00127 void 00128 BESBasicInterface::build_data_request_plan() 00129 { 00130 // The derived class build_data_request_plan should be run first to 00131 // parse the incoming request. Once parsed we can determine if there is 00132 // a return command 00133 00134 // The default _transmitter (either basic or http depending on the 00135 // protocol passed) has been set in initialize. If the parsed command 00136 // sets a RETURN_CMD (a different transmitter) then look it up here. If 00137 // it's set but not found then this is an error. If it's not set then 00138 // just use the defaults. 00139 if( _dhi->data[RETURN_CMD] != "" ) 00140 { 00141 BESDEBUG( "bes", "Finding transmitter: " << _dhi->data[RETURN_CMD] << " ... " << endl ) ; 00142 _transmitter = BESReturnManager::TheManager()->find_transmitter( _dhi->data[RETURN_CMD] ) ; 00143 if( !_transmitter ) 00144 { 00145 string s = (string)"Unable to find transmitter " 00146 + _dhi->data[RETURN_CMD] ; 00147 throw BESSyntaxUserError( s, __FILE__, __LINE__ ) ; 00148 } 00149 BESDEBUG( "bes", "OK" << endl ) ; 00150 } 00151 } 00152 00160 void 00161 BESBasicInterface::execute_data_request_plan() 00162 { 00163 if( BESLog::TheLog()->is_verbose() ) 00164 { 00165 *(BESLog::TheLog()) << _dhi->data[SERVER_PID] 00166 << " from " << _dhi->data[REQUEST_FROM] 00167 << " [" << _dhi->data[DATA_REQUEST] << "] executing" 00168 << endl ; 00169 } 00170 BESInterface::execute_data_request_plan() ; 00171 } 00172 00180 void 00181 BESBasicInterface::invoke_aggregation() 00182 { 00183 if( _dhi->data[AGG_CMD] == "" ) 00184 { 00185 if( BESLog::TheLog()->is_verbose() ) 00186 { 00187 *(BESLog::TheLog()) << _dhi->data[SERVER_PID] 00188 << " from " << _dhi->data[REQUEST_FROM] 00189 << " [" << _dhi->data[DATA_REQUEST] << "]" 00190 << " not aggregating, command empty" 00191 << endl ; 00192 } 00193 } 00194 else 00195 { 00196 BESAggregationServer *agg = BESAggFactory::TheFactory()->find_handler( _dhi->data[AGG_HANDLER] ) ; 00197 if( !agg ) 00198 { 00199 if( BESLog::TheLog()->is_verbose() ) 00200 { 00201 *(BESLog::TheLog()) << _dhi->data[SERVER_PID] 00202 << " from " << _dhi->data[REQUEST_FROM] 00203 << " [" << _dhi->data[DATA_REQUEST] << "]" 00204 << " not aggregating, no handler" 00205 << endl ; 00206 } 00207 } 00208 else 00209 { 00210 if( BESLog::TheLog()->is_verbose() ) 00211 { 00212 *(BESLog::TheLog()) << _dhi->data[SERVER_PID] 00213 << " from " << _dhi->data[REQUEST_FROM] 00214 << " [" << _dhi->data[DATA_REQUEST] 00215 << "] aggregating" << endl ; 00216 } 00217 } 00218 } 00219 BESInterface::invoke_aggregation() ; 00220 } 00221 00229 void 00230 BESBasicInterface::transmit_data() 00231 { 00232 if( BESLog::TheLog()->is_verbose() ) 00233 { 00234 *(BESLog::TheLog()) << _dhi->data[SERVER_PID] 00235 << " from " << _dhi->data[REQUEST_FROM] 00236 << " [" << _dhi->data[DATA_REQUEST] 00237 << "] transmitting" << endl ; 00238 } 00239 BESInterface::transmit_data() ; 00240 } 00241 00246 void 00247 BESBasicInterface::log_status() 00248 { 00249 string result = "completed" ; 00250 if( _dhi->error_info ) 00251 result = "failed" ; 00252 if( BESLog::TheLog()->is_verbose() ) 00253 { 00254 *(BESLog::TheLog()) << _dhi->data[SERVER_PID] 00255 << " from " << _dhi->data[REQUEST_FROM] 00256 << " [" << _dhi->data[DATA_REQUEST] << "] " 00257 << result << endl ; 00258 } 00259 } 00260 00269 void 00270 BESBasicInterface::clean() 00271 { 00272 BESInterface::clean() ; 00273 if( BESLog::TheLog()->is_verbose() ) 00274 { 00275 *(BESLog::TheLog()) << _dhi->data[SERVER_PID] 00276 << " from " << _dhi->data[REQUEST_FROM] 00277 << " [" << _dhi->data[DATA_REQUEST] << "] cleaning" 00278 << endl ; 00279 } 00280 } 00281 00288 void 00289 BESBasicInterface::dump( ostream &strm ) const 00290 { 00291 strm << BESIndent::LMarg << "BESBasicInterface::dump - (" 00292 << (void *)this << ")" << endl ; 00293 BESIndent::Indent() ; 00294 BESInterface::dump( strm ) ; 00295 BESIndent::UnIndent() ; 00296 00297 00298 } 00299