src/Container/SALOME_ContainerPy.py

   1 #! /usr/bin/env python
   2 #  Copyright (C) 2007-2008  CEA/DEN, EDF R&D, 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.
  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 #  SALOME Container : implementation of container and engine for Kernel
  24 #  File   : SALOME_ContainerPy.py
  25 #  Author : Paul RASCLE, EDF
  26 #  Module : SALOME
  27 #  $Header$
  28 #
  29 import os
  30 import sys
  31 import string
  32
  33 from omniORB import CORBA, PortableServer
  34 import SALOMEDS
  35 import Engines, Engines__POA
  36 from SALOME_NamingServicePy import *
  37 from SALOME_ComponentPy import *
  38
  39 from SALOME_utilities import *
  40 from Utils_Identity import getShortHostName
  41 from launchConfigureParser import verbose
  42
  43 #=============================================================================
  44
  45 #define an implementation of the container interface
  46
  47 class SALOME_ContainerPy_i (Engines__POA.Container):
  48     _orb = None
  49     _poa = None
  50     _numInstance = 0
  51     _listInstances_map = {}
  52
  53     #-------------------------------------------------------------------------
  54
  55     def __init__(self, orb, poa, containerName):
  56         MESSAGE( "SALOME_ContainerPy_i::__init__" )
  57         self._orb = orb
  58         self._poa = poa
  59         myMachine=getShortHostName()
  60         Container_path = "/Containers/" + myMachine + "/" + containerName
  61         #self._containerName = containerName
  62         self._containerName = Container_path
  63         if verbose(): print "container name ",self._containerName
  64
  65         naming_service = SALOME_NamingServicePy_i(self._orb)
  66         self._naming_service = naming_service
  67         MESSAGE( str(Container_path) )
  68         naming_service.Register(self._this(), Container_path)
  69
  70     #-------------------------------------------------------------------------
  71
  72     def start_impl(self, ContainerName):
  73         MESSAGE(  "SALOME_ContainerPy_i::start_impl " + str(ContainerName) )
  74         myMachine=getShortHostName()
  75         theContainer = "/Containers/" + myMachine + "/" + ContainerName
  76         try:
  77             obj = self._naming_service.Resolve(theContainer)
  78         except :
  79             obj = None
  80             MESSAGE(  "SALOME_ContainerPy_i::start_impl " + str(ContainerName) + ".object not found in Naming Service" )
  81         if obj is None:
  82             container = None
  83         else:
  84             container = obj._narrow(Engines.Container)
  85             if container is None:
  86                 MESSAGE( "SALOME_ContainerPy_i::start_impl " + str(containerName) + ".object exists but is not a Container" )
  87             else :
  88                 MESSAGE( "SALOME_ContainerPy_i::start_impl " + str(ContainerName) + ".object found without new launch" )
  89             return container
  90         #shstr = os.getenv( "PWD" ) + "/"
  91         #shstr += "runSession ./SALOME_ContainerPy.py "
  92         shstr = os.getenv("KERNEL_ROOT_DIR") + "/bin/salome/SALOME_ContainerPy.py ";
  93         #shstr = "runSession SALOME_ContainerPy.py "
  94         shstr += ContainerName
  95
  96         # mpv: fix for SAL4731 - allways create new file to write log of server
  97         num = 1
  98         fileName = ""
  99         while 1:
 100             fileName = "/tmp/"+ContainerName+"_%i.log"%num
 101             if not os.path.exists(fileName):
 102                 break
 103             num += 1
 104             pass
 105
 106         shstr += " > "
 107         shstr += fileName
 108         shstr += " 2>&1 &"
 109
 110         #shstr += " > /tmp/"
 111         #shstr += ContainerName
 112         #shstr += ".log 2>&1 &"
 113
 114         MESSAGE(  "SALOME_ContainerPy_i::start_impl " + "os.system(" + str(shstr) + ")" )
 115         os.system( shstr )
 116         count = 21
 117         while container is None :
 118             time.sleep(1)
 119             count = count - 1
 120             MESSAGE(  str(count) + ". Waiting for " + str(theContainer) )
 121             try :
 122                 obj = self._naming_service.Resolve(theContainer)
 123             except :
 124                 obj = None
 125             if obj is None:
 126                 container = None
 127             else:
 128                 container = obj._narrow(Engines.Container)
 129                 if container is None:
 130                     MESSAGE(  str(containerName) + ".object exists but is not a Container" )
 131                 return container
 132             if count == 0 :
 133                 return container
 134
 135     #-------------------------------------------------------------------------
 136
 137     def instance(self, nameToRegister, componentName):
 138         MESSAGE(  "SALOME_ContainerPy_i::instance " + str(nameToRegister) + ' ' + str(componentName) )
 139         self._numInstance = self._numInstance +1
 140         instanceName = nameToRegister + "_inst_" + `self._numInstance`
 141
 142         component=__import__(componentName)
 143         factory=getattr(component,componentName)
 144         comp_i=factory(self._orb, self._poa, self._this(), self._containerName,
 145                        instanceName, nameToRegister)
 146
 147         MESSAGE( "SALOME_ContainerPy_i::instance : component created")
 148         comp_o = comp_i._this()
 149         return comp_o
 150
 151     #-------------------------------------------------------------------------
 152
 153     def load_impl(self, nameToRegister, componentName):
 154         MESSAGE(  "SALOME_ContainerPy_i::load_impl " + str(nameToRegister) + ' ' + str(componentName) )
 155         self._numInstance = self._numInstance +1
 156         instanceName = nameToRegister + "_inst_" + `self._numInstance`
 157         interfaceName = nameToRegister
 158         the_command = "import " + nameToRegister + "\n"
 159         the_command = the_command + "comp_i = " + nameToRegister + "." + nameToRegister
 160         the_command = the_command + "(self._orb, self._poa, self._this(), self._containerName, instanceName, interfaceName)\n"
 161         MESSAGE( "SALOME_ContainerPy_i::load_impl :" + str (the_command) )
 162         exec the_command
 163         comp_o = comp_i._this()
 164         return comp_o
 165
 166     #-------------------------------------------------------------------------
 167
 168     def import_component(self, componentName):
 169         MESSAGE( "SALOME_Container_i::import_component" )
 170         ret=0
 171         try:
 172             if verbose(): print "try import ",componentName
 173             module=__import__(componentName)
 174             if verbose(): print "import ",componentName," successful"
 175             ret=1
 176         except:
 177             if verbose():
 178               import traceback
 179               traceback.print_exc()
 180               print "import ",componentName," not possible"
 181         return ret
 182
 183     #-------------------------------------------------------------------------
 184
 185     def load_component_Library(self, componentName):
 186         MESSAGE(  "SALOME_ContainerPy_i::load_component_Library " + str(componentName) )
 187         ret = 0
 188         instanceName = componentName + "_inst_" + `self._numInstance`
 189         interfaceName = componentName
 190         #the_command = "import " + componentName + "\n"
 191         #the_command = the_command + "comp_i = " + componentName + "." + componentName
 192         #the_command = the_command + "(self._orb, self._poa, self._this(), self._containerName, instanceName, interfaceName)\n"
 193         #MESSAGE( "SALOME_ContainerPy_i::load_component_Library :" + str (the_command) )
 194         #exec the_command
 195         #comp_o = comp_i._this()
 196         #if comp_o is not None:
 197         #    ret = 1
 198         #else:
 199             # --- try to import Python component
 200         #    retImpl = self.import_component(componentName)
 201         #    if retImpl == 1:
 202                 #import is possible
 203         #        ret = 1
 204         #    else:
 205                 #import isn't possible
 206         #        ret = 0
 207         #return ret
 208         return self.import_component(componentName)
 209
 210     #-------------------------------------------------------------------------
 211
 212     def create_component_instance(self, componentName, studyId):
 213         MESSAGE( "SALOME_ContainerPy_i::create_component_instance ==> " + str(componentName) + ' ' + str(studyId) )
 214         if studyId < 0:
 215             MESSAGE( "Study ID is lower than 0!" )
 216             return None
 217         else:
 218             self._numInstance = self._numInstance +1
 219             instanceName = componentName + "_inst_" + `self._numInstance`
 220             comp_iors=""
 221             try:
 222                 component=__import__(componentName)
 223                 factory=getattr(component,componentName)
 224                 comp_i=factory(self._orb,
 225                                self._poa,
 226                                self._this(),
 227                                self._containerName,
 228                                instanceName,
 229                                componentName)
 230
 231                 MESSAGE( "SALOME_Container_i::create_component_instance : OK")
 232                 comp_o = comp_i._this()
 233                 self._listInstances_map[instanceName] = comp_i
 234             except:
 235                 import traceback
 236                 traceback.print_exc()
 237                 MESSAGE( "SALOME_Container_i::create_component_instance : NOT OK")
 238             return comp_o
 239
 240     #-------------------------------------------------------------------------
 241
 242     def find_component_instance(self, registeredName, studyId):
 243         anEngine = None
 244         keysList = self._listInstances_map.keys()
 245         i = 0
 246         while i < len(keysList):
 247             instance = keysList[i]
 248             if find(instance,registeredName) == 0:
 249                 anEngine = self._listInstances_map[instance]
 250                 if studyId == anEngine.getStudyId():
 251                     return anEngine._this()
 252             i = i + 1
 253         return anEngine._this()
 254
 255
 256     #-------------------------------------------------------------------------
 257
 258     def remove_impl(self, component):
 259         MESSAGE( "SALOME_ContainerPy_i::remove_impl" )
 260         instanceName = component._get_instanceName()
 261         MESSAGE( "unload component " + str(instanceName) )
 262         self._listInstances_map.remove(instanceName)
 263         component.destroy()
 264         self._naming_service.Destroy_Name(str(instanceName))
 265
 266     #-------------------------------------------------------------------------
 267
 268     def finalize_removal(self):
 269         MESSAGE( "SALOME_ContainerPy_i::finalize_removal" )
 270         return None
 271
 272     #-------------------------------------------------------------------------
 273
 274     def ping(self):
 275         MESSAGE( "SALOME_ContainerPy_i::ping() pid " + str(os.getpid()) )
 276         return None
 277
 278     #-------------------------------------------------------------------------
 279
 280     def getPID(self):
 281         return os.getpid()
 282
 283     #-------------------------------------------------------------------------
 284
 285     def _get_name(self):
 286         MESSAGE( "SALOME_ContainerPy_i::_get_name" )
 287         return self._containerName
 288
 289     #-------------------------------------------------------------------------
 290
 291     def getHostName(self):
 292         MESSAGE( "SALOME_ContainerPy_i::_get_MachineName" )
 293         self._machineName = "localhost"
 294         return self._machineName
 295
 296     #-------------------------------------------------------------------------
 297
 298     def _get_machineName(self):
 299         MESSAGE( "SALOME_ContainerPy_i::_get_MachineName" )
 300         self._machineName = "localhost"
 301         return self._machineName
 302
 303     #-------------------------------------------------------------------------
 304
 305     def Shutdown(self):
 306         self._naming_service.Destroy_Name(self._containerName);
 307         self._naming_service.Destroy_FullDirectory(self._containerName);
 308         self._orb.shutdown(0)
 309         pass
 310
 311     def _get_logfilename(self):
 312       return self._logfilename
 313     def _set_logfilename(self,logfilename):
 314       self._logfilename=logfilename
 315     def _get_workingdir(self):
 316       return os.getcwd()
 317
 318 #=============================================================================
 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"