src/SALOMESDS/SALOMESDS_Transaction.cxx

   1 // Copyright (C) 2007-2016  CEA/DEN, EDF R&D, OPEN CASCADE
   2 //
   3 // This library is free software; you can redistribute it and/or
   4 // modify it under the terms of the GNU Lesser General Public
   5 // License as published by the Free Software Foundation; either
   6 // version 2.1 of the License, or (at your option) any later version.
   7 //
   8 // This library is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 // Lesser General Public License for more details.
  12 //
  13 // You should have received a copy of the GNU Lesser General Public
  14 // License along with this library; if not, write to the Free Software
  15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  16 //
  17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  18 //
  19 // Author : Anthony GEAY (EDF R&D)
  20
  21 #include "SALOMESDS_Transaction.hxx"
  22 #include "SALOMESDS_Exception.hxx"
  23 #include "SALOMESDS_PickelizedPyObjServer.hxx"
  24 #include "SALOMESDS_PickelizedPyObjRdWrServer.hxx"
  25 #include "SALOMESDS_PickelizedPyObjRdExtServer.hxx"
  26 #include "SALOMESDS_TrustTransaction.hxx"
  27
  28 #include <sstream>
  29
  30 using namespace SALOMESDS;
  31
  32 void Transaction::FromByteSeqToVB(const SALOME::ByteVec& bsToBeConv, std::vector<unsigned char>& ret)
  33 {
  34   std::size_t sz(bsToBeConv.length());
  35   ret.resize(sz);
  36   unsigned char *buf(const_cast<unsigned char *>(&ret[0]));
  37   for(std::size_t i=0;i<sz;i++)
  38     buf[i]=bsToBeConv[i];
  39 }
  40
  41 void Transaction::FromVBToByteSeq(const std::vector<unsigned char>& bsToBeConv, SALOME::ByteVec& ret)
  42 {
  43   std::size_t sz(bsToBeConv.size());
  44   ret.length(sz);
  45   for(std::size_t i=0;i<sz;i++)
  46     ret[i]=bsToBeConv[i];
  47 }
  48
  49 Transaction::~Transaction()
  50 {
  51 }
  52
  53 TransactionVarCreate::TransactionVarCreate(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& constValue):Transaction(dsct,varName)
  54 {
  55   FromByteSeqToVB(constValue,_data);
  56 }
  57
  58 void TransactionVarCreate::prepareRollBackInCaseOfFailure()
  59 {
  60   checkNotAlreadyExisting();
  61 }
  62
  63 void TransactionVarCreate::rollBack()
  64 {
  65   if(_dsct->existVar(_var_name.c_str()))
  66     _dsct->deleteVar(_var_name.c_str());
  67 }
  68
  69 /*!
  70  * no implementation it is not a bug !
  71  */
  72 void TransactionVarCreate::notify()
  73 {
  74 }
  75
  76 void TransactionRdOnlyVarCreate::perform()
  77 {
  78   SALOME::ByteVec data2;
  79   FromVBToByteSeq(_data,data2);
  80   _dsct->createRdOnlyVarInternal(_var_name,data2);
  81 }
  82
  83 void TransactionRdExtVarCreate::perform()
  84 {
  85   SALOME::ByteVec data2;
  86   FromVBToByteSeq(_data,data2);
  87   _dsct->createRdExtVarInternal(_var_name,data2);
  88 }
  89
  90 TransactionRdExtVarFreeStyleCreate::TransactionRdExtVarFreeStyleCreate(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& constValue, const char *compareFuncContent):_cmp_func_content(compareFuncContent),_cmp_func(nullptr),TransactionRdExtVarCreate(dsct,varName,constValue)
  91 {
  92   constexpr char EXPECTED_COMPARE_FUNC_NAME[]="comptchev";
  93   SALOME::AutoPyRef context(PyDict_New());
  94   SALOME::AutoPyRef res(PyRun_String(compareFuncContent,Py_file_input,_dsct->getGlobals(),context));
  95   if(res.isNull())
  96     {
  97       std::ostringstream oss; oss << "TransactionRdExtVarFreeStyleCreate ctor : Fail to parse and evaluate \"" << compareFuncContent << "\" as python function !";
  98       throw Exception(oss.str());
  99     }
 100   PyObject *func(PyDict_GetItemString(context,EXPECTED_COMPARE_FUNC_NAME));//borrowed
 101   if(!func)
 102     {
 103       std::ostringstream oss; oss << "TransactionRdExtVarFreeStyleCreate ctor : Parsing of func is OK but not func called \"" << EXPECTED_COMPARE_FUNC_NAME << "\" is the given parsed string !";
 104       throw Exception(oss.str());
 105     }
 106   _cmp_func = func; Py_XINCREF(func);
 107   if(PyDict_DelItemString(context,EXPECTED_COMPARE_FUNC_NAME)!=0)
 108     {
 109       std::ostringstream oss; oss << "TransactionRdExtVarFreeStyleCreate ctor : Internal error during suppression of \"" << EXPECTED_COMPARE_FUNC_NAME << "\" key that exepect to be present ! Smells bad !";
 110       throw Exception(oss.str());
 111     }
 112 }
 113
 114 void TransactionRdExtVarFreeStyleCreate::prepareRollBackInCaseOfFailure()
 115 {//nothing it is not a bug
 116 }
 117
 118 void TransactionRdExtVarFreeStyleCreate::perform()
 119 {
 120   SALOME::ByteVec data2;
 121   FromVBToByteSeq(_data,data2);
 122   _dsct->createRdExtVarFreeStyleInternal(_var_name,data2,std::move(_cmp_func_content),std::move(_cmp_func));
 123 }
 124
 125 void TransactionRdExtInitVarCreate::perform()
 126 {
 127   SALOME::ByteVec data2;
 128   FromVBToByteSeq(_data,data2);
 129   _dsct->createRdExtInitVarInternal(_var_name,data2);
 130 }
 131
 132 void TransactionRdWrVarCreate::perform()
 133 {
 134   SALOME::ByteVec data2;
 135   FromVBToByteSeq(_data,data2);
 136   _dsct->createRdWrVarInternal(_var_name,data2);
 137 }
 138
 139 TransactionKillVar::TransactionKillVar(DataScopeServerTransaction *dsct, const std::string& varName):Transaction(dsct,varName)
 140 {
 141 }
 142
 143 /*!
 144  * TODO
 145  */
 146 void TransactionKillVar::prepareRollBackInCaseOfFailure()
 147 {
 148   checkVarExisting();
 149   //BasicDataServer *bds(_dsct->retrieveVarInternal2(_var_name);
 150   //bds->clone();
 151 }
 152
 153 void TransactionKillVar::perform()
 154 {
 155   _dsct->deleteVar(_var_name.c_str());
 156 }
 157
 158 /*!
 159  * TODO
 160  */
 161 void TransactionKillVar::rollBack()
 162 {
 163 }
 164
 165 /*!
 166  * no implementation it is not a bug ! killVar is not an event.
 167  */
 168 void TransactionKillVar::notify()
 169 {
 170 }
 171
 172 TransactionDictModify::TransactionDictModify(DataScopeServerTransaction *dsct, const std::string& varName):Transaction(dsct,varName),_varc(0)
 173 {
 174   _varc=checkVarExistingAndDict();
 175 }
 176
 177 void TransactionDictModify::prepareRollBackInCaseOfFailure()
 178 {
 179   _zeDataBefore.clear();
 180   PyObject *zeDictPy(_varc->getPyObj());
 181   Py_XINCREF(zeDictPy);
 182   _zeDataBefore=_varc->pickelize(zeDictPy);
 183 }
 184
 185 void TransactionDictModify::rollBack()
 186 {
 187   PyObject *obj(_varc->getPyObjFromPickled(_zeDataBefore));
 188   _varc->setNewPyObj(obj);
 189   _zeDataBefore.clear();
 190 }
 191
 192 TransactionAddKeyValue::TransactionAddKeyValue(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key, const SALOME::ByteVec& value):TransactionDictModify(dsct,varName)
 193 {
 194   std::vector<unsigned char> key2,value2;
 195   FromByteSeqToVB(key,key2);
 196   FromByteSeqToVB(value,value2);
 197   _key=PickelizedPyObjServer::GetPyObjFromPickled(key2,_dsct);
 198   _value=PickelizedPyObjServer::GetPyObjFromPickled(value2,_dsct);
 199 }
 200
 201 void TransactionAddKeyValue::prepareRollBackInCaseOfFailure()
 202 {
 203   TransactionDictModify::prepareRollBackInCaseOfFailure();
 204   _dsct->pingKey(_key);// check that key is OK with all waiting keys
 205 }
 206
 207 void TransactionAddKeyValue::notify()
 208 {
 209   _dsct->notifyKey(getVarName(),_key,_value);
 210 }
 211
 212 TransactionAddKeyValue::~TransactionAddKeyValue()
 213 {
 214   Py_XDECREF(_key);
 215   Py_XDECREF(_value);
 216 }
 217
 218 TransactionAddKeyValueHard::TransactionAddKeyValueHard(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key, const SALOME::ByteVec& value):TransactionAddKeyValue(dsct,varName,key,value)
 219 {
 220 }
 221
 222 void TransactionAddKeyValueHard::perform()
 223 {
 224   _varc->addKeyValueHard(_key,_value);
 225 }
 226
 227 TransactionAddKeyValueErrorIfAlreadyExisting::TransactionAddKeyValueErrorIfAlreadyExisting(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key, const SALOME::ByteVec& value):TransactionAddKeyValue(dsct,varName,key,value)
 228 {
 229   _varc->checkKeyNotAlreadyPresent(_key);
 230 }
 231
 232 void TransactionAddKeyValueErrorIfAlreadyExisting::perform()
 233 {
 234   _varc->addKeyValueErrorIfAlreadyExisting(_key,_value);
 235 }
 236
 237 TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::TransactionRemoveKeyInVarErrorIfNotAlreadyExisting(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key):TransactionDictModify(dsct,varName),_key(0)
 238 {
 239   std::vector<unsigned char> key2;
 240   FromByteSeqToVB(key,key2);
 241   _key=PickelizedPyObjServer::GetPyObjFromPickled(key2,_dsct);
 242 }
 243
 244 void TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::perform()
 245 {
 246   _varc->removeKeyInVarErrorIfNotAlreadyExisting(_key);
 247 }
 248
 249 /*!
 250  * no implementation it is not a bug !
 251  */
 252 void TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::notify()
 253 {
 254 }
 255
 256 TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::~TransactionRemoveKeyInVarErrorIfNotAlreadyExisting()
 257 {
 258   Py_XDECREF(_key);
 259 }
 260
 261 TransactionMorphRdWrIntoRdOnly::TransactionMorphRdWrIntoRdOnly(DataScopeServerTransaction *dsct, const std::string& varName):Transaction(dsct,varName)
 262 {
 263 }
 264
 265 SALOME::PickelizedPyObjRdWrServer_ptr TransactionMorphRdWrIntoRdOnly::getVar()
 266 {
 267   SALOME::BasicDataServer_var obj(_dsct->retrieveVarInternal(_var_name.c_str()));
 268   SALOME::PickelizedPyObjRdWrServer_ptr ret(SALOME::PickelizedPyObjRdWrServer::_narrow(obj));
 269   if(CORBA::is_nil(ret))
 270     {
 271       std::ostringstream oss; oss << "TransactionMorphRdWrIntoRdOnly::getVar : var \"" << _var_name << "\" has not expected PickelizedPyObjRdWrServer type !";
 272       throw Exception(oss.str());
 273     }
 274   return ret;
 275 }
 276
 277 void TransactionMorphRdWrIntoRdOnly::prepareRollBackInCaseOfFailure()
 278 {
 279   BasicDataServer *var(_dsct->retrieveVarInternal2(_var_name));
 280   if(!var)
 281     throw Exception("TransactionMorphRdWrIntoRdOnly::prepareRollBackInCaseOfFailure : Returned var is NULL !");
 282   PickelizedPyObjRdWrServer *varc(dynamic_cast<PickelizedPyObjRdWrServer *>(var));
 283   if(!varc)
 284     throw Exception("TransactionMorphRdWrIntoRdOnly::prepareRollBackInCaseOfFailure : Returned var has not expected type !");
 285 }
 286
 287 void TransactionMorphRdWrIntoRdOnly::perform()
 288 {
 289   _dsct->moveStatusOfVarFromRdWrToRdOnly(_var_name);
 290 }
 291
 292 void TransactionMorphRdWrIntoRdOnly::rollBack()
 293 {
 294   _dsct->moveStatusOfVarFromRdOnlyToRdWr(_var_name);
 295 }
 296
 297 /*!
 298  * no implementation it is not a bug !
 299  */
 300 void TransactionMorphRdWrIntoRdOnly::notify()
 301 {
 302 }
 303
 304 TransactionMultiKeyAddSession::TransactionMultiKeyAddSession(DataScopeServerTransaction *dsct, const std::string& varName):Transaction(dsct,varName)
 305 {
 306   _dsct->moveStatusOfVarFromRdExtOrRdExtInitToRdExtInit(_var_name);
 307 }
 308
 309 void TransactionMultiKeyAddSession::addKeyValueInVarErrorIfAlreadyExistingNow(const SALOME::ByteVec& key, const SALOME::ByteVec& value)
 310 {
 311   _dsct->checkVarExistingAndDict(_var_name);
 312   TransactionAddKeyValueErrorIfAlreadyExisting ret(_dsct,_var_name,key,value);
 313   {
 314     ret.perform();
 315     /*bool mustRollback(true);
 316     TrustTransaction t;
 317     t.setTransaction(&ret,&mustRollback);
 318     t.operate();
 319     mustRollback=false;//important let this line to notify t that everything was OK*/
 320   }
 321   ret.notify();
 322 }
 323
 324 /*!
 325  * no implementation it is not a bug !
 326  */
 327 void TransactionMultiKeyAddSession::prepareRollBackInCaseOfFailure()
 328 {
 329 }
 330
 331 void TransactionMultiKeyAddSession::perform()
 332 {
 333   _dsct->moveStatusOfVarFromRdExtOrRdExtInitToRdExt(_var_name);
 334 }
 335
 336 /*!
 337  * no implementation it is not a bug !
 338  */
 339 void TransactionMultiKeyAddSession::rollBack()
 340 {
 341 }
 342
 343 /*!
 344  * no implementation it is not a bug !
 345  */
 346 void TransactionMultiKeyAddSession::notify()
 347 {
 348 }
 349