src/Container/SALOME_Container.py

   1 #  -*- coding: iso-8859-1 -*-
   2 # Copyright (C) 2007-2024  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 import logging
  45
  46 from SALOME_utilities import *
  47 from Utils_Identity import getShortHostName
  48 from salome_utils import verbose
  49 from KernelBasis import VerbosityActivated,getSSLMode
  50
  51 #=============================================================================
  52
  53 #define an implementation of the container interface for embedding in Container implemented in C++
  54
  55 class SALOME_Container_i:
  56     _orb = None
  57     _poa = None
  58     _containerName = ""
  59     _naming_service = None
  60
  61     #-------------------------------------------------------------------------
  62
  63     def __init__(self ,containerName, containerIORStr, dftTimeIntervalInMs):
  64         # Warning this part of code is called at the very first step of container launching
  65         # so logging is not instanciate. So use verbose method to discrimine if a message should be printed or not
  66         try:
  67           argv = sys.argv
  68         except AttributeError :
  69           # for embedded python interpreter
  70           # shouldn't be needed after python 3.8
  71           # see https://bugs.python.org/issue32573
  72           argv = ['']
  73         logging.debug("Instanciation of {} PID = {}".format(containerName,os.getpid()))
  74         self._orb = CORBA.ORB_init(argv, CORBA.ORB_ID)
  75         self._poa = self._orb.resolve_initial_references("RootPOA")
  76         self._containerName = containerName
  77         self._logFileName = None
  78         self._timeIntervalInMs = dftTimeIntervalInMs
  79         self._logm = None
  80         self._log = None
  81         self._container = self._orb.string_to_object(containerIORStr)
  82
  83     @property
  84     def logm(self):
  85         logging.debug("Logm PID = {}".format(os.getpid()))
  86         import salome
  87         if self._logm is None:
  88            salome.salome_init()
  89            self._logm = salome.logm
  90         return self._logm
  91
  92     #-------------------------------------------------------------------------
  93
  94     def import_component(self, componentName):
  95         ret=""
  96         try:
  97             logging.debug("try import ",componentName)
  98             importlib.import_module(componentName)
  99             logging.debug("import ",componentName," successful")
 100         except ImportError:
 101             #can't import python module componentName
 102             #try to find it in python path
 103             try:
 104               _specs = importlib.util.find_spec(componentName)
 105               _module = importlib.util.module_from_spec(_specs)
 106               _specs.loader.exec_module(_module)
 107               #module file found in path
 108               ret="Component "+componentName+": Python implementation found but it can't be loaded\n"
 109               ret=ret+traceback.format_exc(10)
 110             except ImportError as ee:
 111               ret="ImplementationNotFound"
 112             except Exception:
 113               print("error when calling find_module")
 114               ret="ImplementationNotFound"
 115         except Exception:
 116             ret="Component "+componentName+": Python implementation found but it can't be loaded\n"
 117             ret=ret+traceback.format_exc(10)
 118             traceback.print_exc()
 119             print("import ",componentName," not possible")
 120         return ret
 121
 122     #-------------------------------------------------------------------------
 123
 124     def create_component_instance(self, componentName, instanceName):
 125         comp_iors=""
 126         ret=""
 127         try:
 128             component=importlib.import_module(componentName)
 129             factory=getattr(component,componentName)
 130             comp_i=factory(self._orb,
 131                            self._poa,
 132                            self._container,
 133                            self._containerName,
 134                            instanceName,
 135                            componentName)
 136
 137             comp_o = comp_i._this()
 138             comp_iors = self._orb.object_to_string(comp_o)
 139         except Exception:
 140             ret=traceback.format_exc(10)
 141             traceback.print_exc()
 142         return comp_iors, ret
 143
 144
 145     def create_pynode(self,nodeName,code):
 146         try:
 147           node=SALOME_PyNode.PyNode_i(nodeName,code,self._poa,self)
 148           id_o = self._poa.activate_object(node)
 149           comp_o = self._poa.id_to_reference(id_o)
 150           comp_iors = self._orb.object_to_string(comp_o)
 151           return 0,comp_iors
 152         except Exception:
 153           exc_typ,exc_val,exc_fr=sys.exc_info()
 154           l=traceback.format_exception(exc_typ,exc_val,exc_fr)
 155           return 1,"".join(l)
 156
 157     def create_pyscriptnode(self,nodeName,code):
 158         logging.debug("create_pyscriptnode of {} PID = {}".format(nodeName,os.getpid()))
 159         try:
 160           logscript = None
 161           if getSSLMode():
 162             logscript = self._log.addScript(nodeName,code)
 163           node=SALOME_PyNode.PyScriptNode_i(nodeName,code,self._poa,self, logscript)
 164           id_o = self._poa.activate_object(node)
 165           comp_o = self._poa.id_to_reference(id_o)
 166           comp_iors = self._orb.object_to_string(comp_o)
 167           return 0,comp_iors
 168         except Exception:
 169           exc_typ,exc_val,exc_fr=sys.exc_info()
 170           l=traceback.format_exception(exc_typ,exc_val,exc_fr)
 171           print("".join(l)) ; sys.stdout.flush() # print error also in logs of remote container
 172           return 1,"".join(l)
 173
 174     def positionVerbosityOfLogger(self):
 175         logging.debug("positionVerbosityOfLogger PID = {}".format(os.getpid()))
 176         if VerbosityActivated():
 177           import salome_utils
 178           salome_utils.positionVerbosityOfLoggerRegardingState()
 179
 180     def monitoringtimeresms(self):
 181         return self._timeIntervalInMs
 182
 183     def shutdownPy(self):
 184         if getSSLMode():
 185            if self._log:
 186               self._log.destroy()
 187
 188     def setLogFileName(self, logFileName):
 189         logging.debug("setLogFileName {} PID = {}".format(logFileName,os.getpid()))
 190         if getSSLMode():
 191           self._log = self.logm.declareContainer( self._containerName, logFileName )
 192
 193     def SetMonitoringtimeresms(self , value):
 194         self._timeIntervalInMs = value