src/Container/SALOME_ContainerPy.py

   1 #! /usr/bin/env python3
   2 #  -*- coding: iso-8859-1 -*-
   3 # Copyright (C) 2007-2020  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_Gen_i(Engines__POA.Container):
  50     """
  51     Implementation without naming_service server
  52     """
  53     _orb = None
  54     _poa = None
  55     _numInstance = 0
  56     _listInstances_map = {}
  57
  58     #-------------------------------------------------------------------------
  59
  60     def __init__(self, orb, poa, containerName):
  61         MESSAGE( "SALOME_ContainerPy_i::__init__" )
  62         self._orb = orb
  63         self._poa = poa
  64         myMachine=getShortHostName()
  65         Container_path = "/Containers/" + myMachine + "/" + containerName
  66         self._containerName = Container_path
  67         if verbose(): print("container name ",self._containerName)
  68
  69     #-------------------------------------------------------------------------
  70
  71     def instance(self, nameToRegister, componentName):
  72         MESSAGE(  "SALOME_ContainerPy_i::instance " + str(nameToRegister) + ' ' + str(componentName) )
  73         self._numInstance = self._numInstance +1
  74         instanceName = nameToRegister + "_inst_" + repr(self._numInstance)
  75
  76         component=__import__(componentName)
  77         factory=getattr(component,componentName)
  78         comp_i=factory(self._orb, self._poa, self._this(), self._containerName,
  79                        instanceName, nameToRegister)
  80
  81         MESSAGE( "SALOME_ContainerPy_i::instance : component created")
  82         comp_o = comp_i._this()
  83         return comp_o
  84
  85     #-------------------------------------------------------------------------
  86
  87     def load_impl(self, nameToRegister, componentName):
  88         MESSAGE(  "SALOME_ContainerPy_i::load_impl " + str(nameToRegister) + ' ' + str(componentName) )
  89         self._numInstance = self._numInstance +1
  90         instanceName = nameToRegister + "_inst_" + repr(self._numInstance)
  91         interfaceName = nameToRegister
  92         the_command = "import " + nameToRegister + "\n"
  93         the_command = the_command + "comp_i = " + nameToRegister + "." + nameToRegister
  94         the_command = the_command + "(self._orb, self._poa, self._this(), self._containerName, instanceName, interfaceName)\n"
  95         MESSAGE( "SALOME_ContainerPy_i::load_impl :" + str (the_command) )
  96         exec(the_command)
  97         comp_o = comp_i._this()
  98         return comp_o
  99
 100     #-------------------------------------------------------------------------
 101
 102     def import_component(self, componentName):
 103         MESSAGE( "SALOME_Container_i::import_component" )
 104         reason = ""
 105         try:
 106             if verbose(): print("try import %s" % componentName)
 107             # try import component
 108             module=__import__(componentName)
 109             if verbose(): print("import %s is done successfully" % componentName)
 110             # if import successfully, check that component is loadable
 111             if not hasattr(module, componentName):
 112                 reason = "module %s is not loadable" % componentName
 113                 print(reason)
 114                 pass
 115             pass
 116         except:
 117             import traceback
 118             print("cannot import %s" % componentName)
 119             traceback.print_exc()
 120             reason = "cannot import %s" % componentName
 121         return reason
 122
 123     #-------------------------------------------------------------------------
 124
 125     def load_component_Library(self, componentName):
 126         MESSAGE(  "SALOME_ContainerPy_i::load_component_Library " + str(componentName) )
 127         ret = 0
 128         instanceName = componentName + "_inst_" + repr(self._numInstance)
 129         interfaceName = componentName
 130         reason = self.import_component(componentName)
 131         return reason == "", reason
 132
 133     #-------------------------------------------------------------------------
 134
 135     def create_component_instance_env(self, componentName, env):
 136       return self.create_component_instance(componentName), ""
 137
 138     def create_component_instance(self, componentName):
 139         MESSAGE( "SALOME_ContainerPy_i::create_component_instance ==> " + str(componentName) )
 140         self._numInstance = self._numInstance +1
 141         instanceName = componentName + "_inst_" + repr(self._numInstance)
 142         comp_iors=""
 143         try:
 144             component=__import__(componentName)
 145             factory=getattr(component,componentName)
 146             comp_i=factory(self._orb,
 147                            self._poa,
 148                            self._this(),
 149                            self._containerName,
 150                            instanceName,
 151                            componentName)
 152
 153             MESSAGE( "SALOME_Container_i::create_component_instance : OK")
 154             comp_o = comp_i._this()
 155             self._listInstances_map[instanceName] = comp_i
 156         except:
 157             import traceback
 158             traceback.print_exc()
 159             MESSAGE( "SALOME_Container_i::create_component_instance : NOT OK")
 160         return comp_o
 161
 162     #-------------------------------------------------------------------------
 163
 164     def find_component_instance(self, registeredName):
 165         anEngine = None
 166         for instance in self._listInstances_map:
 167             if find(instance,registeredName) == 0:
 168                 anEngine = self._listInstances_map[instance]
 169                 return anEngine._this()
 170         return anEngine
 171
 172
 173     #-------------------------------------------------------------------------
 174
 175     def create_python_service_instance(self, CompName):
 176         return self.create_component_instance(CompName)
 177
 178     #-------------------------------------------------------------------------
 179
 180     def remove_impl(self, component):
 181         MESSAGE( "SALOME_ContainerPy_i::remove_impl" )
 182         instanceName = component._get_instanceName()
 183         MESSAGE( "unload component " + str(instanceName) )
 184         self._listInstances_map.remove(instanceName)
 185         component.destroy()
 186         self._naming_service.Destroy_Name(str(instanceName))
 187
 188     #-------------------------------------------------------------------------
 189
 190     def finalize_removal(self):
 191         MESSAGE( "SALOME_ContainerPy_i::finalize_removal" )
 192         return None
 193
 194     #-------------------------------------------------------------------------
 195
 196     def ping(self):
 197         MESSAGE( "SALOME_ContainerPy_i::ping() pid " + str(os.getpid()) )
 198         return None
 199
 200     #-------------------------------------------------------------------------
 201
 202     def getPID(self):
 203         return os.getpid()
 204
 205     #-------------------------------------------------------------------------
 206
 207     def _get_name(self):
 208         MESSAGE( "SALOME_ContainerPy_i::_get_name" )
 209         return self._containerName
 210
 211     #-------------------------------------------------------------------------
 212
 213     def getHostName(self):
 214         MESSAGE( "SALOME_ContainerPy_i::_get_MachineName" )
 215         self._machineName = "localhost"
 216         return self._machineName
 217
 218     #-------------------------------------------------------------------------
 219
 220     def _get_machineName(self):
 221         MESSAGE( "SALOME_ContainerPy_i::_get_MachineName" )
 222         self._machineName = "localhost"
 223         return self._machineName
 224
 225     #-------------------------------------------------------------------------
 226
 227     def Shutdown(self):
 228         self._naming_service.Destroy_Name(self._containerName);
 229         self._naming_service.Destroy_FullDirectory(self._containerName);
 230         self._orb.shutdown(0)
 231         pass
 232
 233     def _get_logfilename(self):
 234       return self._logfilename
 235     def _set_logfilename(self,logfilename):
 236       self._logfilename=logfilename
 237     def _get_workingdir(self):
 238       return os.getcwd()
 239
 240 #=============================================================================
 241
 242 class SALOME_ContainerPy_i(SALOME_ContainerPy_Gen_i):
 243     """
 244     Implementation with naming_service server
 245     """
 246     def __init__(self, orb, poa, containerName):
 247         SALOME_ContainerPy_Gen_i.__init__(self, orb, poa, containerName)
 248         naming_service = SALOME_NamingServicePy_i(self._orb)
 249         self._naming_service = naming_service
 250         MESSAGE( str(Container_path) )
 251         naming_service.Register(self._this(), Container_path)
 252
 253     #-------------------------------------------------------------------------
 254
 255     def start_impl(self, ContainerName):
 256         MESSAGE(  "SALOME_ContainerPy_i::start_impl " + str(ContainerName) )
 257         myMachine=getShortHostName()
 258         theContainer = "/Containers/" + myMachine + "/" + ContainerName
 259         try:
 260             obj = self._naming_service.Resolve(theContainer)
 261         except :
 262             obj = None
 263             MESSAGE(  "SALOME_ContainerPy_i::start_impl " + str(ContainerName) + ".object not found in Naming Service" )
 264         if obj is None:
 265             container = None
 266         else:
 267             container = obj._narrow(Engines.Container)
 268             if container is None:
 269                 MESSAGE( "SALOME_ContainerPy_i::start_impl " + str(containerName) + ".object exists but is not a Container" )
 270             else :
 271                 MESSAGE( "SALOME_ContainerPy_i::start_impl " + str(ContainerName) + ".object found without new launch" )
 272             return container
 273         #shstr = os.getenv( "PWD" ) + "/"
 274         #shstr += "runSession ./SALOME_ContainerPy.py "
 275         shstr = os.getenv("KERNEL_ROOT_DIR") + "/bin/salome/SALOME_ContainerPy.py ";
 276         #shstr = "runSession SALOME_ContainerPy.py "
 277         shstr += ContainerName
 278
 279         # mpv: fix for SAL4731 - always create new file to write log of server
 280         num = 1
 281         fileName = ""
 282         while 1:
 283             fileName = "/tmp/"+ContainerName+"_%i.log"%num
 284             if not os.path.exists(fileName):
 285                 break
 286             num += 1
 287             pass
 288
 289         shstr += " > "
 290         shstr += fileName
 291         shstr += " 2>&1 &"
 292
 293         #shstr += " > /tmp/"
 294         #shstr += ContainerName
 295         #shstr += ".log 2>&1 &"
 296
 297         MESSAGE(  "SALOME_ContainerPy_i::start_impl " + "os.system(" + str(shstr) + ")" )
 298         os.system( shstr )
 299         count = 21
 300         while container is None :
 301             time.sleep(1)
 302             count = count - 1
 303             MESSAGE(  str(count) + ". Waiting for " + str(theContainer) )
 304             try :
 305                 obj = self._naming_service.Resolve(theContainer)
 306             except :
 307                 obj = None
 308             if obj is None:
 309                 container = None
 310             else:
 311                 container = obj._narrow(Engines.Container)
 312                 if container is None:
 313                     MESSAGE(  str(containerName) + ".object exists but is not a Container" )
 314                 return container
 315             if count == 0 :
 316                 return container
 317
 318     pass
 319
 320 if __name__ == "__main__":
 321   # change the stdout buffering to line buffering (same as C++ cout buffering)
 322   sys.stdout=os.fdopen(1,"w",1)
 323   #initialise the ORB and find the root POA
 324   if verbose():print("Starting ",sys.argv[1])
 325   orb = CORBA.ORB_init(sys.argv, CORBA.ORB_ID)
 326   poa = orb.resolve_initial_references("RootPOA")
 327   if verbose():print("ORB and POA initialized")
 328
 329   #create an instance of SALOME_ContainerPy_i and a Container reference
 330   #containerName = "FactoryServerPy"
 331   MESSAGE( str(sys.argv) )
 332   containerName = sys.argv[1]
 333   cpy_i = SALOME_ContainerPy_i(orb, poa, containerName)
 334   if verbose():print("SALOME_ContainerPy_i instance created ",cpy_i)
 335   cpy_o = cpy_i._this()
 336   if verbose():print("SALOME_ContainerPy_i instance activated ",cpy_o)
 337   sys.stdout.flush()
 338   sys.stderr.flush()
 339
 340   #activate the POA
 341   poaManager = poa._get_the_POAManager()
 342   poaManager.activate()
 343
 344   #Block for ever
 345   orb.run()
 346   if verbose():print("SALOME_ContainerPy_i shutdown")