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