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
  49 #=============================================================================
  50
  51 #define an implementation of the container interface for embedding in Container implemented in C++
  52
  53 class SALOME_Container_i:
  54     _orb = None
  55     _poa = None
  56     _containerName = ""
  57     _naming_service = None
  58
  59     #-------------------------------------------------------------------------
  60
  61     def __init__(self ,containerName, containerIORStr):
  62         MESSAGE( "SALOME_Container_i::__init__" )
  63         try:
  64           argv = sys.argv
  65         except AttributeError :
  66           # for embedded python interpreter
  67           # shouldn't be needed after python 3.8
  68           # see https://bugs.python.org/issue32573
  69           argv = ['']
  70         self._orb = CORBA.ORB_init(argv, CORBA.ORB_ID)
  71         self._poa = self._orb.resolve_initial_references("RootPOA")
  72         self._containerName = containerName
  73         if verbose(): print("SALOME_Container.SALOME_Container_i : _containerName ",self._containerName)
  74         self._container = self._orb.string_to_object(containerIORStr)
  75
  76     #-------------------------------------------------------------------------
  77
  78     def import_component(self, componentName):
  79         MESSAGE( "SALOME_Container_i::import_component" )
  80         ret=""
  81         try:
  82             if verbose(): print("try import ",componentName)
  83             importlib.import_module(componentName)
  84             if verbose(): print("import ",componentName," successful")
  85         except ImportError:
  86             #can't import python module componentName
  87             #try to find it in python path
  88             try:
  89               _specs = importlib.util.find_spec(componentName)
  90               _module = importlib.util.module_from_spec(_specs)
  91               _specs.loader.exec_module(_module)
  92               #module file found in path
  93               ret="Component "+componentName+": Python implementation found but it can't be loaded\n"
  94               ret=ret+traceback.format_exc(10)
  95             except ImportError as ee:
  96               ret="ImplementationNotFound"
  97             except Exception:
  98               if verbose():print("error when calling find_module")
  99               ret="ImplementationNotFound"
 100         except Exception:
 101             ret="Component "+componentName+": Python implementation found but it can't be loaded\n"
 102             ret=ret+traceback.format_exc(10)
 103             if verbose():
 104               traceback.print_exc()
 105               print("import ",componentName," not possible")
 106         return ret
 107
 108     #-------------------------------------------------------------------------
 109
 110     def create_component_instance(self, componentName, instanceName):
 111         MESSAGE( "SALOME_Container_i::create_component_instance" )
 112         comp_iors=""
 113         ret=""
 114         try:
 115             component=importlib.import_module(componentName)
 116             factory=getattr(component,componentName)
 117             comp_i=factory(self._orb,
 118                            self._poa,
 119                            self._container,
 120                            self._containerName,
 121                            instanceName,
 122                            componentName)
 123
 124             MESSAGE( "SALOME_Container_i::create_component_instance : OK")
 125             comp_o = comp_i._this()
 126             comp_iors = self._orb.object_to_string(comp_o)
 127         except Exception:
 128             ret=traceback.format_exc(10)
 129             traceback.print_exc()
 130             MESSAGE( "SALOME_Container_i::create_component_instance : NOT OK")
 131         return comp_iors, ret
 132
 133
 134     def create_pynode(self,nodeName,code):
 135         try:
 136           node=SALOME_PyNode.PyNode_i(nodeName,code,self._poa,self)
 137           id_o = self._poa.activate_object(node)
 138           comp_o = self._poa.id_to_reference(id_o)
 139           comp_iors = self._orb.object_to_string(comp_o)
 140           return 0,comp_iors
 141         except Exception:
 142           exc_typ,exc_val,exc_fr=sys.exc_info()
 143           l=traceback.format_exception(exc_typ,exc_val,exc_fr)
 144           return 1,"".join(l)
 145
 146     def create_pyscriptnode(self,nodeName,code):
 147         try:
 148           node=SALOME_PyNode.PyScriptNode_i(nodeName,code,self._poa,self)
 149           id_o = self._poa.activate_object(node)
 150           comp_o = self._poa.id_to_reference(id_o)
 151           comp_iors = self._orb.object_to_string(comp_o)
 152           return 0,comp_iors
 153         except Exception:
 154           exc_typ,exc_val,exc_fr=sys.exc_info()
 155           l=traceback.format_exception(exc_typ,exc_val,exc_fr)
 156           return 1,"".join(l)