bin/salome_session.py

   1 #! /usr/bin/python
   2 #  -*- coding: iso-8859-1 -*-
   3 #  Copyright (C) 2007-2008  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.
  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 ## @package salome_session
  25 # \brief Module that provides the SalomeSession object that helps to launch
  26 #        a SALOME script session
  27 #
  28 #
  29
  30 import os
  31 import sys
  32 import string
  33 import socket
  34
  35 _session = None
  36
  37 def startSession(modules=[]):
  38     global _session
  39     if _session: return
  40     searchFreePort()
  41     _session = SalomeSession(modules)
  42     return
  43
  44 def getShortHostName():
  45     """
  46     gives Hostname without domain extension.
  47     SALOME naming service needs short Hostnames (without domain extension).
  48     HOSTNAME is not allways defined in environment,
  49     socket.gethostname() gives short or complete Hostname, depending on
  50     defined aliases.
  51     """
  52     from salome_utils import getShortHostName
  53     return getShortHostName()
  54
  55 def searchFreePort():
  56     """
  57     Search free port for SALOME session.
  58     Returns first found free port number.
  59     """
  60     print "Searching a free port for naming service:",
  61     from salome_utils import generateFileName, getHostName
  62     hostname = getHostName()
  63     NSPORT = 2810
  64     limit  = NSPORT+100
  65     while 1:
  66         print "%s "%(NSPORT),
  67         status = os.system("netstat -ltn | grep -E :%s"%(NSPORT))
  68         if status:
  69             home  = os.getenv("HOME")
  70             appli = os.getenv("APPLI")
  71             kwargs={}
  72             if appli is not None:
  73               home = os.path.join(home, appli,"USERS")
  74               kwargs["with_username"]=True
  75             omniorb_config = generateFileName(home, prefix="omniORB",
  76                                               extension="cfg",
  77                                               hidden=True,
  78                                               with_hostname=True,
  79                                               with_port=NSPORT,
  80                                               **kwargs)
  81             f = open(omniorb_config, "w")
  82             f.write("ORBInitRef NameService=corbaname::%s:%s\n"%(hostname, NSPORT))
  83             f.close()
  84             os.environ['OMNIORB_CONFIG'] = omniorb_config
  85             last_running_config = generateFileName(home, prefix="omniORB",
  86                                                    suffix="last",
  87                                                    extension="cfg",
  88                                                    hidden=True,
  89                                                    **kwargs)
  90             os.environ['LAST_RUNNING_CONFIG'] = last_running_config
  91             if os.access(last_running_config,os.F_OK):
  92                 os.unlink(last_running_config)
  93                 pass
  94             os.symlink(omniorb_config,last_running_config)
  95             print "- Ok"
  96             break
  97         if NSPORT == limit:
  98             msg  = ""
  99             msg += "Can not find a free port to launch omniNames\n"
 100             msg += "Kill the running servers and try again.\n"
 101             raise RuntimeError, msg
 102         NSPORT = NSPORT+1
 103         pass
 104     os.environ['NSHOST'] = hostname
 105     os.environ['NSPORT'] = str(NSPORT)
 106     return NSPORT
 107
 108
 109 class SalomeSession(object):
 110     """Salome session launcher"""
 111     import runSalome
 112     import killSalomeWithPort
 113     import killSalome
 114     def __init__(self, modules):
 115         import runSalome
 116         sys.argv  = ["dummy.py"]
 117         sys.argv += ["--terminal"]
 118         if modules:
 119             sys.argv += ['--modules=%s'%(",".join(modules))]
 120             pass
 121         runSalome.clt, runSalome.args = runSalome.main()
 122         import salome
 123         salome.salome_init()
 124         return
 125     def __del__(self):
 126         import runSalome
 127         runSalome.killLocalPort()
 128         return
 129     pass