src/Container/SALOME_ContainerPy.py

   1 #! /usr/bin/env python
   2 #
   3 #  SALOME Container : implementation of container and engine for Kernel
   4 #
   5 #  Copyright (C) 2003  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.
  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 #
  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 import omnipatch                     # PAL10310
  36
  37 from omniORB import CORBA, PortableServer
  38 import SALOMEDS
  39 import Engines, Engines__POA
  40 from SALOME_NamingServicePy import *
  41 from SALOME_ComponentPy import *
  42
  43 from SALOME_utilities import *
  44 from Utils_Identity import getShortHostName
  45
  46 #=============================================================================
  47
  48 #define an implementation of the container interface
  49
  50 class SALOME_ContainerPy_i (Engines__POA.Container):
  51     _orb = None
  52     _poa = None
  53     _numInstance = 0
  54     _listInstances_map = {}
  55
  56     #-------------------------------------------------------------------------
  57
  58     def __init__(self, orb, poa, containerName):
  59         MESSAGE( "SALOME_ContainerPy_i::__init__" )
  60         self._orb = orb
  61         self._poa = poa
  62         myMachine=getShortHostName()
  63         Container_path = "/Containers/" + myMachine + "/" + containerName
  64         #self._containerName = containerName
  65         self._containerName = Container_path
  66         print "container name ",self._containerName
  67
  68         naming_service = SALOME_NamingServicePy_i(self._orb)
  69         self._naming_service = naming_service
  70         MESSAGE( str(Container_path) )
  71         naming_service.Register(self._this(), Container_path)
  72
  73     #-------------------------------------------------------------------------
  74
  75     def start_impl(self, ContainerName):
  76         MESSAGE(  "SALOME_ContainerPy_i::start_impl " + str(ContainerName) )
  77         myMachine=getShortHostName()
  78         theContainer = "/Containers/" + myMachine + "/" + ContainerName
  79         try:
  80             obj = self._naming_service.Resolve(theContainer)
  81         except :
  82             obj = None
  83             MESSAGE(  "SALOME_ContainerPy_i::start_impl " + str(ContainerName) + ".object not found in Naming Service" )
  84         if obj is None:
  85             container = None
  86         else:
  87             container = obj._narrow(Engines.Container)
  88             if container is None:
  89                 MESSAGE( "SALOME_ContainerPy_i::start_impl " + str(containerName) + ".object exists but is not a Container" )
  90             else :
  91                 MESSAGE( "SALOME_ContainerPy_i::start_impl " + str(ContainerName) + ".object found without new launch" )
  92             return container
  93         #shstr = os.getenv( "PWD" ) + "/"
  94         #shstr += "runSession ./SALOME_ContainerPy.py "
  95         shstr = os.getenv("KERNEL_ROOT_DIR") + "/bin/salome/SALOME_ContainerPy.py ";
  96         #shstr = "runSession SALOME_ContainerPy.py "
  97         shstr += ContainerName
  98
  99         # mpv: fix for SAL4731 - allways create new file to write log of server
 100         num = 1
 101         fileName = ""
 102         while 1:
 103             fileName = "/tmp/"+ContainerName+"_%i.log"%num
 104             if not os.path.exists(fileName):
 105                 break
 106             num += 1
 107             pass
 108
 109         shstr += " > "
 110         shstr += fileName
 111         shstr += " 2>&1 &"
 112
 113         #shstr += " > /tmp/"
 114         #shstr += ContainerName
 115         #shstr += ".log 2>&1 &"
 116
 117         MESSAGE(  "SALOME_ContainerPy_i::start_impl " + "os.system(" + str(shstr) + ")" )
 118         os.system( shstr )
 119         count = 21
 120         while container is None :
 121             time.sleep(1)
 122             count = count - 1
 123             MESSAGE(  str(count) + ". Waiting for " + str(theContainer) )
 124             try :
 125                 obj = self._naming_service.Resolve(theContainer)
 126             except :
 127                 obj = None
 128             if obj is None:
 129                 container = None
 130             else:
 131                 container = obj._narrow(Engines.Container)
 132                 if container is None:
 133                     MESSAGE(  str(containerName) + ".object exists but is not a Container" )
 134                 return container
 135             if count == 0 :
 136                 return container
 137
 138     #-------------------------------------------------------------------------
 139
 140     def instance(self, nameToRegister, componentName):
 141         MESSAGE(  "SALOME_ContainerPy_i::instance " + str(nameToRegister) + ' ' + str(componentName) )
 142         self._numInstance = self._numInstance +1
 143         instanceName = nameToRegister + "_inst_" + `self._numInstance`
 144
 145         component=__import__(componentName)
 146         factory=getattr(component,componentName)
 147         comp_i=factory(self._orb, self._poa, self._this(), self._containerName,
 148                        instanceName, nameToRegister)
 149
 150         MESSAGE( "SALOME_ContainerPy_i::instance : component created")
 151         comp_o = comp_i._this()
 152         return comp_o
 153
 154     #-------------------------------------------------------------------------
 155
 156     def load_impl(self, nameToRegister, componentName):
 157         MESSAGE(  "SALOME_ContainerPy_i::load_impl " + str(nameToRegister) + ' ' + str(componentName) )
 158         self._numInstance = self._numInstance +1
 159         instanceName = nameToRegister + "_inst_" + `self._numInstance`
 160         interfaceName = nameToRegister
 161         the_command = "import " + nameToRegister + "\n"
 162         the_command = the_command + "comp_i = " + nameToRegister + "." + nameToRegister
 163         the_command = the_command + "(self._orb, self._poa, self._this(), self._containerName, instanceName, interfaceName)\n"
 164         MESSAGE( "SALOME_ContainerPy_i::load_impl :" + str (the_command) )
 165         exec the_command
 166         comp_o = comp_i._this()
 167         return comp_o
 168
 169     #-------------------------------------------------------------------------
 170
 171     def import_component(self, componentName):
 172         MESSAGE( "SALOME_Container_i::import_component" )
 173         ret=0
 174         try:
 175             print "try import ",componentName
 176             __import__(componentName)
 177             print "import ",componentName," successful"
 178             ret=1
 179         except:
 180             import traceback
 181             traceback.print_exc()
 182             print "import ",componentName," not possible"
 183         return ret
 184
 185     #-------------------------------------------------------------------------
 186
 187     def load_component_Library(self, componentName):
 188         MESSAGE(  "SALOME_ContainerPy_i::load_component_Library " + str(componentName) )
 189         ret = 0
 190         instanceName = componentName + "_inst_" + `self._numInstance`
 191         interfaceName = componentName
 192         #the_command = "import " + componentName + "\n"
 193         #the_command = the_command + "comp_i = " + componentName + "." + componentName
 194         #the_command = the_command + "(self._orb, self._poa, self._this(), self._containerName, instanceName, interfaceName)\n"
 195         #MESSAGE( "SALOME_ContainerPy_i::load_component_Library :" + str (the_command) )
 196         #exec the_command
 197         #comp_o = comp_i._this()
 198         #if comp_o is not None:
 199         #    ret = 1
 200         #else:
 201             # --- try to import Python component
 202         #    retImpl = self.import_component(componentName)
 203         #    if retImpl == 1:
 204                 #import is possible
 205         #        ret = 1
 206         #    else:
 207                 #import isn't possible
 208         #        ret = 0
 209         #return ret
 210         return self.import_component(componentName)
 211
 212     #-------------------------------------------------------------------------
 213
 214     def create_component_instance(self, componentName, studyId):
 215         MESSAGE( "SALOME_ContainerPy_i::create_component_instance ==> " + str(componentName) + ' ' + str(studyId) )
 216         if studyId < 0:
 217             MESSAGE( "Study ID is lower than 0!" )
 218             return None
 219         else:
 220             self._numInstance = self._numInstance +1
 221             instanceName = componentName + "_inst_" + `self._numInstance`
 222             comp_iors=""
 223             try:
 224                 component=__import__(componentName)
 225                 factory=getattr(component,componentName)
 226                 comp_i=factory(self._orb,
 227                                self._poa,
 228                                self._this(),
 229                                self._containerName,
 230                                instanceName,
 231                                componentName)
 232
 233                 MESSAGE( "SALOME_Container_i::create_component_instance : OK")
 234                 comp_o = comp_i._this()
 235                 self._listInstances_map[instanceName] = comp_i
 236             except:
 237                 import traceback
 238                 traceback.print_exc()
 239                 MESSAGE( "SALOME_Container_i::create_component_instance : NOT OK")
 240             return comp_o
 241
 242     #-------------------------------------------------------------------------
 243
 244     def find_component_instance(self, registeredName, studyId):
 245         anEngine = None
 246         keysList = self._listInstances_map.keys()
 247         i = 0
 248         while i < len(keysList):
 249             instance = keysList[i]
 250             if find(instance,registeredName) == 0:
 251                 anEngine = self._listInstances_map[instance]
 252                 if studyId == anEngine.getStudyId():
 253                     return anEngine._this()
 254             i = i + 1
 255         return anEngine._this()
 256
 257
 258     #-------------------------------------------------------------------------
 259
 260     def remove_impl(self, component):
 261         MESSAGE( "SALOME_ContainerPy_i::remove_impl" )
 262         instanceName = component._get_instanceName()
 263         MESSAGE( "unload component " + str(instanceName) )
 264         self._listInstances_map.remove(instanceName)
 265         component.destroy()
 266         self._naming_service.Destroy_Name(str(instanceName))
 267
 268     #-------------------------------------------------------------------------
 269
 270     def finalize_removal(self):
 271         MESSAGE( "SALOME_ContainerPy_i::finalize_removal" )
 272         return None
 273
 274     #-------------------------------------------------------------------------
 275
 276     def ping(self):
 277         MESSAGE( "SALOME_ContainerPy_i::ping() pid " + str(os.getpid()) )
 278         return None
 279
 280     #-------------------------------------------------------------------------
 281
 282     def getPID(self):
 283         return os.getpid()
 284
 285     #-------------------------------------------------------------------------
 286
 287     def _get_name(self):
 288         MESSAGE( "SALOME_ContainerPy_i::_get_name" )
 289         return self._containerName
 290
 291     #-------------------------------------------------------------------------
 292
 293     def getHostName(self):
 294         MESSAGE( "SALOME_ContainerPy_i::_get_MachineName" )
 295         self._machineName = "localhost"
 296         return self._machineName
 297
 298     #-------------------------------------------------------------------------
 299
 300     def _get_machineName(self):
 301         MESSAGE( "SALOME_ContainerPy_i::_get_MachineName" )
 302         self._machineName = "localhost"
 303         return self._machineName
 304
 305     #-------------------------------------------------------------------------
 306
 307     def Shutdown(self):
 308         self._orb.shutdown(0)
 309         pass
 310
 311 #=============================================================================
 312
 313 #initialise the ORB and find the root POA
 314 print "Starting ",sys.argv[1]
 315 orb = CORBA.ORB_init(sys.argv, CORBA.ORB_ID)
 316 poa = orb.resolve_initial_references("RootPOA")
 317 print "ORB and POA initialized"
 318
 319 #create an instance of SALOME_ContainerPy_i and a Container reference
 320 #containerName = "FactoryServerPy"
 321 MESSAGE( str(sys.argv) )
 322 containerName = sys.argv[1]
 323 cpy_i = SALOME_ContainerPy_i(orb, poa, containerName)
 324 print "SALOME_ContainerPy_i instance created ",cpy_i
 325 cpy_o = cpy_i._this()
 326 print "SALOME_ContainerPy_i instance activated ",cpy_o
 327
 328 #activate the POA
 329 poaManager = poa._get_the_POAManager()
 330 poaManager.activate()
 331
 332 #Block for ever
 333 orb.run()
 334
 335
 336
 337
 338
 339