bin/salome_session.py

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