bin/salome_session.py

   1
   2 import os
   3 import sys
   4 import string
   5 import socket
   6
   7 _session = None
   8
   9 def startSession(modules=[]):
  10     global _session
  11     if _session: return
  12     searchFreePort()
  13     _session = SalomeSession(modules)
  14     return
  15
  16 def getShortHostName():
  17     """
  18     gives Hostname without domain extension.
  19     SALOME naming service needs short Hostnames (without domain extension).
  20     HOSTNAME is not allways defined in environment,
  21     socket.gethostname() gives short or complete Hostname, depending on
  22     defined aliases.
  23     """
  24     return string.split(socket.gethostname(),'.')[0]
  25
  26 def searchFreePort():
  27     print "Searching a free port for naming service:",
  28     NSPORT=2810
  29     limit=NSPORT
  30     limit=limit+100
  31     while 1:
  32         print "%s "%(NSPORT),
  33         status = os.system("netstat -ltn | grep -E :%s"%(NSPORT))
  34         if status:
  35             home = os.environ['HOME']
  36             appli=os.environ.get("APPLI")
  37             if appli is None:
  38                 #Run outside application context
  39                 home=home
  40             else:
  41                 home='%s/%s'%(home,appli)
  42             hostname=getShortHostName()
  43             omniorb_config = '%s/.omniORB_%s_%s.cfg'%(home,hostname, NSPORT)
  44             os.environ['OMNIORB_CONFIG'] = omniorb_config
  45             f = open(omniorb_config, "w")
  46             f.write("ORBInitRef NameService=corbaname::%s:%s\n"%(hostname, NSPORT))
  47             f.close()
  48             last_running_config = '%s/.omniORB_%s_last.cfg'%(home, hostname)
  49             os.environ['LAST_RUNNING_CONFIG'] = last_running_config
  50             if os.access(last_running_config,os.F_OK):
  51                 os.unlink(last_running_config)
  52                 pass
  53             os.symlink(omniorb_config,last_running_config)
  54             #            LAST_RUNNING_CONFIG=${HOME}/${APPLI}/.omniORB_${myhost}_last.cfg
  55             print "- Ok"
  56             break
  57         if NSPORT == limit:
  58             msg  = ""
  59             msg += "I Can't find a free port to launch omniNames\n"
  60             msg += "I suggest you to kill the running servers and try again.\n"
  61             raise msg
  62         NSPORT=NSPORT+1
  63         pass
  64     os.environ['NSHOST']=hostname
  65     os.environ['NSPORT']=str(NSPORT)
  66     return NSPORT
  67
  68
  69 class SalomeSession(object):
  70     import runSalome
  71     import killSalomeWithPort
  72     import killSalome
  73     def __init__(self, modules):
  74         import runSalome
  75         sys.argv  = ["dummy.py"]
  76         sys.argv += ["--terminal"]
  77         if modules:
  78             sys.argv += ['--modules=%s'%(",".join(modules))]
  79             pass
  80         runSalome.clt, runSalome.args = runSalome.main()
  81         import salome
  82         salome.salome_init()
  83         return
  84     def __del__(self):
  85         import runSalome
  86         runSalome.killLocalPort()
  87         return
  88     pass