src/Container/SALOME_ContainerPy.py

   1 #! /usr/bin/env python
   2 #  -*- coding: iso-8859-1 -*-
   3 # Copyright (C) 2007-2016  CEA/DEN, EDF R&D, OPEN CASCADE
   4 #
   5 # Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
   6 # CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
   7 #
   8 # This library is free software; you can redistribute it and/or
   9 # modify it under the terms of the GNU Lesser General Public
  10 # License as published by the Free Software Foundation; either
  11 # version 2.1 of the License, or (at your option) any later version.
  12 #
  13 # This library is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 # Lesser General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU Lesser General Public
  19 # License along with this library; if not, write to the Free Software
  20 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21 #
  22 # See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  23 #
  24
  25 #  SALOME Container : implementation of container and engine for Kernel
  26 #  File   : SALOME_ContainerPy.py
  27 #  Author : Paul RASCLE, EDF
  28 #  Module : SALOME
  29 #  $Header$
  30 #
  31 import os
  32 import sys
  33 import string
  34
  35 from omniORB import CORBA, PortableServer
  36 import SALOMEDS
  37 import Engines, Engines__POA
  38 from SALOME_NamingServicePy import *
  39 from SALOME_ComponentPy import *
  40
  41 from SALOME_utilities import *
  42 from Utils_Identity import getShortHostName
  43 from launchConfigureParser import verbose
  44
  45 #=============================================================================
  46
  47 #define an implementation of the container interface for the container implemented in Python
  48
  49 class SALOME_ContainerPy_i (Engines__POA.Container):
  50     _orb = None
  51     _poa = None
  52     _numInstance = 0
  53     _listInstances_map = {}
  54
  55     #-------------------------------------------------------------------------
  56
  57     def __init__(self, orb, poa, containerName):
  58         MESSAGE( "SALOME_ContainerPy_i::__init__" )
  59         self._orb = orb
  60         self._poa = poa
  61         myMachine=getShortHostName()
  62         Container_path = "/Containers/" + myMachine + "/" + containerName
  63         self._containerName = Container_path
  64         if verbose(): print("container name ",self._containerName)
  65
  66         naming_service = SALOME_NamingServicePy_i(self._orb)
  67         self._naming_service = naming_service
  68         MESSAGE( str(Container_path) )
  69         naming_service.Register(self._this(), Container_path)
  70
  71     #-------------------------------------------------------------------------
  72
  73     def start_impl(self, ContainerName):
  74         MESSAGE(  "SALOME_ContainerPy_i::start_impl " + str(ContainerName) )
  75         myMachine=getShortHostName()
  76         theContainer = "/Containers/" + myMachine + "/" + ContainerName
  77         try:
  78             obj = self._naming_service.Resolve(theContainer)
  79         except :
  80             obj = None
  81             MESSAGE(  "SALOME_ContainerPy_i::start_impl " + str(ContainerName) + ".object not found in Naming Service" )
  82         if obj is None:
  83             container = None
  84         else:
  85             container = obj._narrow(Engines.Container)
  86             if container is None:
  87                 MESSAGE( "SALOME_ContainerPy_i::start_impl " + str(containerName) + ".object exists but is not a Container" )
  88             else :
  89                 MESSAGE( "SALOME_ContainerPy_i::start_impl " + str(ContainerName) + ".object found without new launch" )
  90             return container
  91         #shstr = os.getenv( "PWD" ) + "/"
  92         #shstr += "runSession ./SALOME_ContainerPy.py "
  93         shstr = os.getenv("KERNEL_ROOT_DIR") + "/bin/salome/SALOME_ContainerPy.py ";
  94         #shstr = "runSession SALOME_ContainerPy.py "
  95         shstr += ContainerName
  96
  97         # mpv: fix for SAL4731 - allways create new file to write log of server
  98         num = 1
  99         fileName = ""
 100         while 1:
 101             fileName = "/tmp/"+ContainerName+"_%i.log"%num
 102             if not os.path.exists(fileName):
 103                 break
 104             num += 1
 105             pass
 106
 107         shstr += " > "
 108         shstr += fileName
 109         shstr += " 2>&1 &"
 110
 111         #shstr += " > /tmp/"
 112         #shstr += ContainerName
 113         #shstr += ".log 2>&1 &"
 114
 115         MESSAGE(  "SALOME_ContainerPy_i::start_impl " + "os.system(" + str(shstr) + ")" )
 116         os.system( shstr )
 117         count = 21
 118         while container is None :
 119             time.sleep(1)
 120             count = count - 1
 121             MESSAGE(  str(count) + ". Waiting for " + str(theContainer) )
 122             try :
 123                 obj = self._naming_service.Resolve(theContainer)
 124             except :
 125                 obj = None
 126             if obj is None:
 127                 container = None
 128             else:
 129                 container = obj._narrow(Engines.Container)
 130                 if container is None:
 131                     MESSAGE(  str(containerName) + ".object exists but is not a Container" )
 132                 return container
 133             if count == 0 :
 134                 return container
 135
 136     #-------------------------------------------------------------------------
 137
 138     def instance(self, nameToRegister, componentName):
 139         MESSAGE(  "SALOME_ContainerPy_i::instance " + str(nameToRegister) + ' ' + str(componentName) )
 140         self._numInstance = self._numInstance +1
 141         instanceName = nameToRegister + "_inst_" + repr(self._numInstance)
 142
 143         component=__import__(componentName)
 144         factory=getattr(component,componentName)
 145         comp_i=factory(self._orb, self._poa, self._this(), self._containerName,
 146                        instanceName, nameToRegister)
 147
 148         MESSAGE( "SALOME_ContainerPy_i::instance : component created")
 149         comp_o = comp_i._this()
 150         return comp_o
 151
 152     #-------------------------------------------------------------------------
 153
 154     def load_impl(self, nameToRegister, componentName):
 155         MESSAGE(  "SALOME_ContainerPy_i::load_impl " + str(nameToRegister) + ' ' + str(componentName) )
 156         self._numInstance = self._numInstance +1
 157         instanceName = nameToRegister + "_inst_" + repr(self._numInstance)
 158         interfaceName = nameToRegister
 159         the_command = "import " + nameToRegister + "\n"
 160         the_command = the_command + "comp_i = " + nameToRegister + "." + nameToRegister
 161         the_command = the_command + "(self._orb, self._poa, self._this(), self._containerName, instanceName, interfaceName)\n"
 162         MESSAGE( "SALOME_ContainerPy_i::load_impl :" + str (the_command) )
 163         exec(the_command)
 164         comp_o = comp_i._this()
 165         return comp_o
 166
 167     #-------------------------------------------------------------------------
 168
 169     def import_component(self, componentName):
 170         MESSAGE( "SALOME_Container_i::import_component" )
 171         reason = ""
 172         try:
 173             if verbose(): print("try import %s" % componentName)
 174             # try import component
 175             module=__import__(componentName)
 176             if verbose(): print("import %s is done successfully" % componentName)
 177             # if import successfully, check that component is loadable
 178             if not hasattr(module, componentName):
 179                 reason = "module %s is not loadable" % componentName
 180                 print(reason)
 181                 pass
 182             pass
 183         except:
 184             import traceback
 185             print("cannot import %s" % componentName)
 186             traceback.print_exc()
 187             reason = "cannot import %s" % componentName
 188         return reason
 189
 190     #-------------------------------------------------------------------------
 191
 192     def load_component_Library(self, componentName):
 193         MESSAGE(  "SALOME_ContainerPy_i::load_component_Library " + str(componentName) )
 194         ret = 0
 195         instanceName = componentName + "_inst_" + repr(self._numInstance)
 196         interfaceName = componentName
 197         reason = self.import_component(componentName)
 198         return reason == "", reason
 199
 200     #-------------------------------------------------------------------------
 201
 202     def create_component_instance_env(self, componentName, env):
 203       return self.create_component_instance(componentName), ""
 204
 205     def create_component_instance(self, componentName):
 206         MESSAGE( "SALOME_ContainerPy_i::create_component_instance ==> " + str(componentName) )
 207         self._numInstance = self._numInstance +1
 208         instanceName = componentName + "_inst_" + repr(self._numInstance)
 209         comp_iors=""
 210         try:
 211             component=__import__(componentName)
 212             factory=getattr(component,componentName)
 213             comp_i=factory(self._orb,
 214                            self._poa,
 215                            self._this(),
 216                            self._containerName,
 217                            instanceName,
 218                            componentName)
 219
 220             MESSAGE( "SALOME_Container_i::create_component_instance : OK")
 221             comp_o = comp_i._this()
 222             self._listInstances_map[instanceName] = comp_i
 223         except:
 224             import traceback
 225             traceback.print_exc()
 226             MESSAGE( "SALOME_Container_i::create_component_instance : NOT OK")
 227         return comp_o
 228
 229     #-------------------------------------------------------------------------
 230
 231     def find_component_instance(self, registeredName):
 232         anEngine = None
 233         for instance in self._listInstances_map:
 234             if find(instance,registeredName) == 0:
 235                 anEngine = self._listInstances_map[instance]
 236                 return anEngine._this()
 237         return anEngine
 238
 239
 240     #-------------------------------------------------------------------------
 241
 242     def create_python_service_instance(self, CompName):
 243         return self.create_component_instance(CompName)
 244
 245     #-------------------------------------------------------------------------
 246
 247     def remove_impl(self, component):
 248         MESSAGE( "SALOME_ContainerPy_i::remove_impl" )
 249         instanceName = component._get_instanceName()
 250         MESSAGE( "unload component " + str(instanceName) )
 251         self._listInstances_map.remove(instanceName)
 252         component.destroy()
 253         self._naming_service.Destroy_Name(str(instanceName))
 254
 255     #-------------------------------------------------------------------------
 256
 257     def finalize_removal(self):
 258         MESSAGE( "SALOME_ContainerPy_i::finalize_removal" )
 259         return None
 260
 261     #-------------------------------------------------------------------------
 262
 263     def ping(self):
 264         MESSAGE( "SALOME_ContainerPy_i::ping() pid " + str(os.getpid()) )
 265         return None
 266
 267     #-------------------------------------------------------------------------
 268
 269     def getPID(self):
 270         return os.getpid()
 271
 272     #-------------------------------------------------------------------------
 273
 274     def _get_name(self):
 275         MESSAGE( "SALOME_ContainerPy_i::_get_name" )
 276         return self._containerName
 277
 278     #-------------------------------------------------------------------------
 279
 280     def getHostName(self):
 281         MESSAGE( "SALOME_ContainerPy_i::_get_MachineName" )
 282         self._machineName = "localhost"
 283         return self._machineName
 284
 285     #-------------------------------------------------------------------------
 286
 287     def _get_machineName(self):
 288         MESSAGE( "SALOME_ContainerPy_i::_get_MachineName" )
 289         self._machineName = "localhost"
 290         return self._machineName
 291
 292     #-------------------------------------------------------------------------
 293
 294     def Shutdown(self):
 295         self._naming_service.Destroy_Name(self._containerName);
 296         self._naming_service.Destroy_FullDirectory(self._containerName);
 297         self._orb.shutdown(0)
 298         pass
 299
 300     def _get_logfilename(self):
 301       return self._logfilename
 302     def _set_logfilename(self,logfilename):
 303       self._logfilename=logfilename
 304     def _get_workingdir(self):
 305       return os.getcwd()
 306
 307 #=============================================================================
 308
 309 if __name__ == "__main__":
 310   # change the stdout buffering to line buffering (same as C++ cout buffering)
 311   sys.stdout=os.fdopen(1,"w",1)
 312   #initialise the ORB and find the root POA
 313   if verbose():print("Starting ",sys.argv[1])
 314   orb = CORBA.ORB_init(sys.argv, CORBA.ORB_ID)
 315   poa = orb.resolve_initial_references("RootPOA")
 316   if verbose():print("ORB and POA initialized")
 317
 318   #create an instance of SALOME_ContainerPy_i and a Container reference
 319   #containerName = "FactoryServerPy"
 320   MESSAGE( str(sys.argv) )
 321   containerName = sys.argv[1]
 322   cpy_i = SALOME_ContainerPy_i(orb, poa, containerName)
 323   if verbose():print("SALOME_ContainerPy_i instance created ",cpy_i)
 324   cpy_o = cpy_i._this()
 325   if verbose():print("SALOME_ContainerPy_i instance activated ",cpy_o)
 326   sys.stdout.flush()
 327   sys.stderr.flush()
 328
 329   #activate the POA
 330   poaManager = poa._get_the_POAManager()
 331   poaManager.activate()
 332
 333   #Block for ever
 334   orb.run()
 335   if verbose():print("SALOME_ContainerPy_i shutdown")