1 # -*- coding: iso-8859-1 -*-
2 # Copyright (C) 2007-2022 CEA/DEN, EDF R&D, OPEN CASCADE
4 # This library is free software; you can redistribute it and/or
5 # modify it under the terms of the GNU Lesser General Public
6 # License as published by the Free Software Foundation; either
7 # version 2.1 of the License, or (at your option) any later version.
9 # This library is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 # Lesser General Public License for more details.
14 # You should have received a copy of the GNU Lesser General Public
15 # License along with this library; if not, write to the Free Software
16 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 # See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
21 # File : SALOME_PyNode.py
22 # Author : Christian CAREMOLI, EDF
33 class Generic(SALOME__POA.GenericObj):
34 """A Python implementation of the GenericObj CORBA IDL"""
35 def __init__(self,poa):
40 #print("Register called : %d"%self.cnt)
44 #print("UnRegister called : %d"%self.cnt)
47 oid=self.poa.servant_to_id(self)
48 self.poa.deactivate_object(oid)
51 print("WARNING SALOME::GenericObj::Destroy() function is obsolete! Use UnRegister() instead.")
55 #print("Destuctor called")
58 class PyNode_i (Engines__POA.PyNode,Generic):
59 """The implementation of the PyNode CORBA IDL"""
60 def __init__(self, nodeName,code,poa,my_container):
61 """Initialize the node : compilation in the local context"""
62 Generic.__init__(self,poa)
63 self.nodeName=nodeName
65 self.my_container=my_container._container
66 linecache.cache[nodeName]=0,None,code.split('\n'),nodeName
67 ccode=compile(code,nodeName,'exec')
69 self.context["my_container"] = self.my_container
70 exec(ccode, self.context)
72 def getContainer(self):
73 return self.my_container
81 def defineNewCustomVar(self,varName,valueOfVar):
82 self.context[varName] = pickle.loads(valueOfVar)
85 def executeAnotherPieceOfCode(self,code):
86 """Called for initialization of container lodging self."""
88 ccode=compile(code,self.nodeName,'exec')
89 exec(ccode, self.context)
91 raise SALOME.SALOME_Exception(SALOME.ExceptionStruct(SALOME.BAD_PARAM,"","PyScriptNode (%s) : code to be executed \"%s\"" %(self.nodeName,code),0))
93 def execute(self,funcName,argsin):
94 """Execute the function funcName found in local context with pickled args (argsin)"""
96 argsin,kws=pickle.loads(argsin)
97 func=self.context[funcName]
98 argsout=func(*argsin,**kws)
99 argsout=pickle.dumps(argsout,-1)
102 exc_typ,exc_val,exc_fr=sys.exc_info()
103 l=traceback.format_exception(exc_typ,exc_val,exc_fr)
104 raise SALOME.SALOME_Exception(SALOME.ExceptionStruct(SALOME.BAD_PARAM,"".join(l),"PyNode: %s, function: %s" % (self.nodeName,funcName),0))
106 class SenderByte_i(SALOME__POA.SenderByte,Generic):
107 def __init__(self,poa,bytesToSend):
108 Generic.__init__(self,poa)
109 self.bytesToSend = bytesToSend
112 return len(self.bytesToSend)
114 def sendPart(self,n1,n2):
115 return self.bytesToSend[n1:n2]
117 SALOME_FILE_BIG_OBJ_DIR = "SALOME_FILE_BIG_OBJ_DIR"
119 SALOME_BIG_OBJ_ON_DISK_THRES_VAR = "SALOME_BIG_OBJ_ON_DISK_THRES"
122 SALOME_BIG_OBJ_ON_DISK_THRES_DFT = 50000000
124 def GetBigObjectOnDiskThreshold():
126 if SALOME_BIG_OBJ_ON_DISK_THRES_VAR in os.environ:
127 return int( os.environ[SALOME_BIG_OBJ_ON_DISK_THRES_VAR] )
129 return SALOME_BIG_OBJ_ON_DISK_THRES_DFT
131 def GetBigObjectDirectory():
133 if SALOME_FILE_BIG_OBJ_DIR not in os.environ:
134 raise RuntimeError("An object of size higher than limit detected and no directory specified to dump it in file !")
135 return os.environ[SALOME_FILE_BIG_OBJ_DIR]
137 def GetBigObjectFileName():
139 Return a filename in the most secure manner (see tempfile documentation)
142 with tempfile.NamedTemporaryFile(dir=GetBigObjectDirectory(),prefix="mem_",suffix=".pckl") as f:
146 class BigObjectOnDisk:
147 def __init__(self, fileName, objSerialized):
149 :param fileName: the file used to dump into.
150 :param objSerialized: the object in pickeled form
151 :type objSerialized: bytes
153 self._filename = fileName
154 self._destroy = False
155 self.__dumpIntoFile(objSerialized)
157 def unlinkOnDestructor(self):
160 def doNotTouchFile(self):
162 Method called slave side. The life cycle management of file is client side not slave side.
164 self._destroy = False
169 os.unlink( self._filename )
171 def getFileName(self):
172 return self._filename
174 def __dumpIntoFile(self, objSerialized):
175 with open(self._filename,"wb") as f:
176 f.write(objSerialized)
180 with open(self._filename,"rb") as f:
181 return pickle.load(f)
183 def SpoolPickleObject( obj ):
185 pickleObjInit = pickle.dumps( obj , pickle.HIGHEST_PROTOCOL )
186 if len(pickleObjInit) < GetBigObjectOnDiskThreshold():
189 proxyObj = BigObjectOnDisk( GetBigObjectFileName() , pickleObjInit )
190 pickleProxy = pickle.dumps( proxyObj , pickle.HIGHEST_PROTOCOL )
193 def UnProxyObject( obj ):
194 if isinstance(obj,BigObjectOnDisk):
200 class SeqByteReceiver:
201 # 2GB limit to trigger split into chunks
202 CHUNK_SIZE = 2000000000
203 def __init__(self,sender):
206 self._obj.UnRegister()
209 size = self._obj.getSize()
210 if size <= SeqByteReceiver.CHUNK_SIZE:
211 return self.fetchOneShot( size )
213 return self.fetchByChunks( size )
214 def fetchOneShot(self,size):
215 return self._obj.sendPart(0,size)
216 def fetchByChunks(self,size):
218 To avoid memory peak parts over 2GB are sent using EFF_CHUNK_SIZE size.
220 data_for_split_case = bytes(0)
221 EFF_CHUNK_SIZE = SeqByteReceiver.CHUNK_SIZE // 8
222 iStart = 0 ; iEnd = EFF_CHUNK_SIZE
223 while iStart!=iEnd and iEnd <= size:
224 part = self._obj.sendPart(iStart,iEnd)
225 data_for_split_case = bytes(0).join( [data_for_split_case,part] )
226 iStart = iEnd; iEnd = min(iStart + EFF_CHUNK_SIZE,size)
227 return data_for_split_case
229 class PyScriptNode_i (Engines__POA.PyScriptNode,Generic):
230 """The implementation of the PyScriptNode CORBA IDL that executes a script"""
231 def __init__(self, nodeName,code,poa,my_container):
232 """Initialize the node : compilation in the local context"""
233 Generic.__init__(self,poa)
234 self.nodeName=nodeName
236 self.my_container=my_container._container
237 linecache.cache[nodeName]=0,None,code.split('\n'),nodeName
238 self.ccode=compile(code,nodeName,'exec')
240 self.context["my_container"] = self.my_container
242 def getContainer(self):
243 return self.my_container
251 def defineNewCustomVar(self,varName,valueOfVar):
252 self.context[varName] = pickle.loads(valueOfVar)
255 def executeAnotherPieceOfCode(self,code):
256 """Called for initialization of container lodging self."""
258 ccode=compile(code,self.nodeName,'exec')
259 exec(ccode, self.context)
261 raise SALOME.SALOME_Exception(SALOME.ExceptionStruct(SALOME.BAD_PARAM,"","PyScriptNode (%s) : code to be executed \"%s\"" %(self.nodeName,code),0))
263 def assignNewCompiledCode(self,codeStr):
266 self.ccode=compile(codeStr,self.nodeName,'exec')
268 raise SALOME.SALOME_Exception(SALOME.ExceptionStruct(SALOME.BAD_PARAM,"","PyScriptNode.assignNewCompiledCode (%s) : code to be executed \"%s\"" %(self.nodeName,codeStr),0))
270 def execute(self,outargsname,argsin):
271 """Execute the script stored in attribute ccode with pickled args (argsin)"""
273 argsname,kws=pickle.loads(argsin)
274 self.context.update(kws)
275 exec(self.ccode, self.context)
277 for arg in outargsname:
278 if arg not in self.context:
279 raise KeyError("There is no variable %s in context" % arg)
280 argsout.append(self.context[arg])
281 argsout=pickle.dumps(tuple(argsout),-1)
284 exc_typ,exc_val,exc_fr=sys.exc_info()
285 l=traceback.format_exception(exc_typ,exc_val,exc_fr)
286 raise SALOME.SALOME_Exception(SALOME.ExceptionStruct(SALOME.BAD_PARAM,"".join(l),"PyScriptNode: %s, outargsname: %s" % (self.nodeName,outargsname),0))
288 def executeFirst(self,argsin):
289 """ Same than first part of self.execute to reduce memory peak."""
293 if True: # to force call of SeqByteReceiver's destructor
294 argsInPy = SeqByteReceiver( argsin )
295 data = argsInPy.data()
296 _,kws=pickle.loads(data)
298 kws[elt] = UnProxyObject( kws[elt] )
299 self.context.update(kws)
301 exc_typ,exc_val,exc_fr=sys.exc_info()
302 l=traceback.format_exception(exc_typ,exc_val,exc_fr)
303 raise SALOME.SALOME_Exception(SALOME.ExceptionStruct(SALOME.BAD_PARAM,"".join(l),"PyScriptNode:First %s" % (self.nodeName),0))
305 def executeSecond(self,outargsname):
306 """ Same than second part of self.execute to reduce memory peak."""
308 exec(self.ccode, self.context)
310 for arg in outargsname:
311 if arg not in self.context:
312 raise KeyError("There is no variable %s in context" % arg)
313 argsout.append(self.context[arg])
316 argPickle = SpoolPickleObject( arg )
317 retArg = SenderByte_i( self.poa,argPickle )
318 id_o = self.poa.activate_object(retArg)
319 retObj = self.poa.id_to_reference(id_o)
320 ret.append( retObj._narrow( SALOME.SenderByte ) )
323 exc_typ,exc_val,exc_fr=sys.exc_info()
324 l=traceback.format_exception(exc_typ,exc_val,exc_fr)
325 raise SALOME.SALOME_Exception(SALOME.ExceptionStruct(SALOME.BAD_PARAM,"".join(l),"PyScriptNode:Second %s, outargsname: %s" % (self.nodeName,outargsname),0))
327 def getValueOfVarInContext(self,varName):
329 return pickle.dumps(self.context[varName],-1)
331 exc_typ,exc_val,exc_fr=sys.exc_info()
332 l=traceback.format_exception(exc_typ,exc_val,exc_fr)
333 raise SALOME.SALOME_Exception(SALOME.ExceptionStruct(SALOME.BAD_PARAM,"".join(l),"PyScriptNode: %s" %self.nodeName,0))
336 def assignVarInContext(self, varName, value):
338 self.context[varName][0] = pickle.loads(value)
340 exc_typ,exc_val,exc_fr=sys.exc_info()
341 l=traceback.format_exception(exc_typ,exc_val,exc_fr)
342 raise SALOME.SALOME_Exception(SALOME.ExceptionStruct(SALOME.BAD_PARAM,"".join(l),"PyScriptNode: %s" %self.nodeName,0))
345 def callMethodOnVarInContext(self, varName, methodName, args):
347 return pickle.dumps( getattr(self.context[varName][0],methodName)(*pickle.loads(args)),-1 )
349 exc_typ,exc_val,exc_fr=sys.exc_info()
350 l=traceback.format_exception(exc_typ,exc_val,exc_fr)
351 raise SALOME.SALOME_Exception(SALOME.ExceptionStruct(SALOME.BAD_PARAM,"".join(l),"PyScriptNode: %s" %self.nodeName,0))