src/Container/SALOME_Container.py

   1 #  -*- coding: iso-8859-1 -*-
   2 # Copyright (C) 2007-2023  CEA, EDF, OPEN CASCADE
   3 #
   4 # Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
   5 # CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
   6 #
   7 # This library is free software; you can redistribute it and/or
   8 # modify it under the terms of the GNU Lesser General Public
   9 # License as published by the Free Software Foundation; either
  10 # version 2.1 of the License, or (at your option) any later version.
  11 #
  12 # This library is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 # Lesser General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU Lesser General Public
  18 # License along with this library; if not, write to the Free Software
  19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  20 #
  21 # See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  22 #
  23
  24 #  SALOME Container : implementation of container and engine for Kernel
  25 #  File   : SALOME_Container.py
  26 #  Author : Paul RASCLE, EDF
  27 #  Module : SALOME
  28 #  $Header$
  29
  30 ## @package SALOME_Container
  31 # \brief python implementation of container interface for Kernel
  32 #
  33
  34 import os
  35 import sys
  36 import traceback
  37 import importlib
  38 from omniORB import CORBA, PortableServer
  39 import SALOMEDS
  40 import Engines, Engines__POA
  41 from SALOME_NamingServicePy import *
  42 from SALOME_ComponentPy import *
  43 import SALOME_PyNode
  44
  45 from SALOME_utilities import *
  46 from Utils_Identity import getShortHostName
  47 from launchConfigureParser import verbose
  48 from KernelBasis import VerbosityActivated
  49
  50 #=============================================================================
  51
  52 #define an implementation of the container interface for embedding in Container implemented in C++
  53
  54 class SALOME_Container_i:
  55     _orb = None
  56     _poa = None
  57     _containerName = ""
  58     _naming_service = None
  59
  60     #-------------------------------------------------------------------------
  61
  62     def __init__(self ,containerName, containerIORStr):
  63         MESSAGE( "SALOME_Container_i::__init__" )
  64         try:
  65           argv = sys.argv
  66         except AttributeError :
  67           # for embedded python interpreter
  68           # shouldn't be needed after python 3.8
  69           # see https://bugs.python.org/issue32573
  70           argv = ['']
  71         self._orb = CORBA.ORB_init(argv, CORBA.ORB_ID)
  72         self._poa = self._orb.resolve_initial_references("RootPOA")
  73         self._containerName = containerName
  74         if verbose(): print("SALOME_Container.SALOME_Container_i : _containerName ",self._containerName)
  75         self._container = self._orb.string_to_object(containerIORStr)
  76
  77     #-------------------------------------------------------------------------
  78
  79     def import_component(self, componentName):
  80         MESSAGE( "SALOME_Container_i::import_component" )
  81         ret=""
  82         try:
  83             if verbose(): print("try import ",componentName)
  84             importlib.import_module(componentName)
  85             if verbose(): print("import ",componentName," successful")
  86         except ImportError:
  87             #can't import python module componentName
  88             #try to find it in python path
  89             try:
  90               _specs = importlib.util.find_spec(componentName)
  91               _module = importlib.util.module_from_spec(_specs)
  92               _specs.loader.exec_module(_module)
  93               #module file found in path
  94               ret="Component "+componentName+": Python implementation found but it can't be loaded\n"
  95               ret=ret+traceback.format_exc(10)
  96             except ImportError as ee:
  97               ret="ImplementationNotFound"
  98             except Exception:
  99               if verbose():print("error when calling find_module")
 100               ret="ImplementationNotFound"
 101         except Exception:
 102             ret="Component "+componentName+": Python implementation found but it can't be loaded\n"
 103             ret=ret+traceback.format_exc(10)
 104             if verbose():
 105               traceback.print_exc()
 106               print("import ",componentName," not possible")
 107         return ret
 108
 109     #-------------------------------------------------------------------------
 110
 111     def create_component_instance(self, componentName, instanceName):
 112         MESSAGE( "SALOME_Container_i::create_component_instance" )
 113         comp_iors=""
 114         ret=""
 115         try:
 116             component=importlib.import_module(componentName)
 117             factory=getattr(component,componentName)
 118             comp_i=factory(self._orb,
 119                            self._poa,
 120                            self._container,
 121                            self._containerName,
 122                            instanceName,
 123                            componentName)
 124
 125             MESSAGE( "SALOME_Container_i::create_component_instance : OK")
 126             comp_o = comp_i._this()
 127             comp_iors = self._orb.object_to_string(comp_o)
 128         except Exception:
 129             ret=traceback.format_exc(10)
 130             traceback.print_exc()
 131             MESSAGE( "SALOME_Container_i::create_component_instance : NOT OK")
 132         return comp_iors, ret
 133
 134
 135     def create_pynode(self,nodeName,code):
 136         try:
 137           node=SALOME_PyNode.PyNode_i(nodeName,code,self._poa,self)
 138           id_o = self._poa.activate_object(node)
 139           comp_o = self._poa.id_to_reference(id_o)
 140           comp_iors = self._orb.object_to_string(comp_o)
 141           return 0,comp_iors
 142         except Exception:
 143           exc_typ,exc_val,exc_fr=sys.exc_info()
 144           l=traceback.format_exception(exc_typ,exc_val,exc_fr)
 145           return 1,"".join(l)
 146
 147     def create_pyscriptnode(self,nodeName,code):
 148         try:
 149           node=SALOME_PyNode.PyScriptNode_i(nodeName,code,self._poa,self)
 150           id_o = self._poa.activate_object(node)
 151           comp_o = self._poa.id_to_reference(id_o)
 152           comp_iors = self._orb.object_to_string(comp_o)
 153           return 0,comp_iors
 154         except Exception:
 155           exc_typ,exc_val,exc_fr=sys.exc_info()
 156           l=traceback.format_exception(exc_typ,exc_val,exc_fr)
 157           return 1,"".join(l)
 158
 159     def positionVerbosityOfLogger(self):
 160         if VerbosityActivated():
 161           import salome_utils
 162           salome_utils.positionVerbosityOfLoggerRegardingState()