src/LifeCycleCORBA/LifeCycleCORBA.py

   1 #  SALOME LifeCycleC RBA : implementation of containers and engines life cycle both in Python and C++
   2 #
   3 #  Copyright (C) 2003  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
   4 #  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
   5 #
   6 #  This library is free software; you can redistribute it and/or
   7 #  modify it under the terms of the GNU Lesser General Public
   8 #  License as published by the Free Software Foundation; either
   9 #  version 2.1 of the License.
  10 #
  11 #  This library is distributed in the hope that it will be useful,
  12 #  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 #  Lesser General Public License for more details.
  15 #
  16 #  You should have received a copy of the GNU Lesser General Public
  17 #  License along with this library; if not, write to the Free Software
  18 #  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19 #
  20 #  See http://www.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
  21 #
  22 #
  23 #
  24 #  File   : LifeCycleCORBA.py
  25 #  Author : Paul RASCLE, EDF
  26 #  Module : SALOME
  27 #  $Header$
  28
  29 import os
  30 import sys
  31 import time
  32 import string
  33 from omniORB import CORBA
  34 import CosNaming
  35 import Engines
  36 import SALOME_ModuleCatalog
  37
  38 from SALOME_utilities import *
  39 from Utils_Identity import getShortHostName
  40
  41 class LifeCycleCORBA:
  42     _orb = None
  43     _rootcontext = None
  44     _containerRootContext = None
  45     _catalog = None
  46
  47     #-------------------------------------------------------------------------
  48
  49     def __init__(self, orb):
  50         MESSAGE( "LifeCycleCORBA::__init__" )
  51         self._orb = orb
  52
  53         obj = self._orb.resolve_initial_references("NameService")
  54         self._rootContext = obj._narrow(CosNaming.NamingContext)
  55
  56         if self._rootContext is None:
  57             MESSAGE( "Name Service Reference is invalid" )
  58
  59         name = [CosNaming.NameComponent("Containers","dir")]
  60         try:
  61             self._containerRootContext = self._rootContext.bind_new_context(name)
  62
  63         except CosNaming.NamingContext.AlreadyBound, ex:
  64             MESSAGE( "/Containers.dir Context already exists" )
  65             obj = self._rootContext.resolve(name)
  66             self._containerRootContext = obj._narrow(CosNaming.NamingContext)
  67             if self._containerRootContext is None:
  68                 MESSAGE( "Containers.dir exists but it is not a NamingContext" )
  69
  70         name = [CosNaming.NameComponent("Kernel","dir"),
  71                 CosNaming.NameComponent("ModulCatalog","object")]
  72         try:
  73             obj = self._rootContext.resolve(name)
  74         except CosNaming.NamingContext.NotFound, ex:
  75             MESSAGE( "/Kernel.dir/ModulCatalog.object not found in Naming Service" )
  76
  77         self._catalog = obj._narrow(SALOME_ModuleCatalog.ModuleCatalog)
  78         if self._catalog is None:
  79             MESSAGE( "/Kernel.dir/ModulCatalog.object exists but is not a ModulCatalog" )
  80
  81     #-------------------------------------------------------------------------
  82
  83     def ContainerName(self, containerName):
  84         theComputer = ""
  85         try:
  86             theComputer , theContainer = containerName.split('/')
  87         except:
  88             theComputer = ""
  89             theContainer = containerName
  90         if theComputer == "" :
  91             theComputer = getShortHostName()
  92         if theComputer == "localhost" :
  93             theComputer = getShortHostName()
  94         computerSplitName = theComputer.split('.')
  95         theComputer = computerSplitName[0]
  96         MESSAGE( theComputer + theContainer )
  97         return theComputer,theContainer
  98
  99     #-------------------------------------------------------------------------
 100
 101     def ComputerPath(self, ComputerName ):
 102         try:
 103             #path = self._catalog.GetPathPrefix( ComputerName )
 104             path = os.getenv("KERNEL_ROOT_DIR") + "/bin/salome/"
 105         except SALOME_ModuleCatalog.NotFound, ex:
 106             path = ""
 107         return path
 108
 109     #-------------------------------------------------------------------------
 110
 111     def FindContainer(self, containerName):
 112         theComputer,theContainer = self.ContainerName( containerName )
 113         name = [CosNaming.NameComponent(theComputer,"dir"),
 114                 CosNaming.NameComponent(theContainer,"object")]
 115         obj = None
 116         try:
 117             obj = self._containerRootContext.resolve(name)
 118             MESSAGE( containerName + ".object found in Naming Service" )
 119
 120         except CosNaming.NamingContext.NotFound, ex:
 121             MESSAGE( containerName + ".object not found in Naming Service" )
 122
 123         if obj is None:
 124             container = None
 125         else:
 126             container = obj._narrow(Engines.Container)
 127             if container is None:
 128                 MESSAGE( containerName + ".object exists but is not a Container" )
 129         return container
 130
 131     #-------------------------------------------------------------------------
 132
 133     def FindOrStartContainer(self, theComputer , theContainer ):
 134         MESSAGE( "FindOrStartContainer" + theComputer + theContainer )
 135         aContainer = self.FindContainer( theComputer + "/" + theContainer )
 136         if aContainer is None :
 137             if (theContainer == "FactoryServer") | (theContainer == "FactoryServerPy") :
 138                 myMachine=getShortHostName()
 139                 if theComputer == myMachine :
 140                     rshstr = ""
 141                 else :
 142                     rshstr = "rsh -n " + theComputer + " "
 143                 path = self.ComputerPath( theComputer )
 144 ##                if path != "" :
 145 ##                    rshstr = rshstr + path + "/../bin/"
 146 ##                else :
 147 ##                    rshstr = rshstr + os.getenv( "KERNEL_ROOT_DIR" ) + "/bin/"
 148                 if theContainer == "FactoryServer" :
 149                     rshstr = rshstr + path + "SALOME_Container "
 150                 else :
 151                     rshstr = rshstr + path + "SALOME_ContainerPy.py '"
 152                 rshstr = rshstr + theContainer + " -"
 153                 omniORBcfg = os.getenv( "OMNIORB_CONFIG" )
 154                 file = os.open( omniORBcfg , os.O_RDONLY )
 155                 ORBInitRef = os.read(file,132)
 156                 if ORBInitRef[len(ORBInitRef)-1] == '\n' :
 157                     ORBInitRef,bsn = ORBInitRef.split('\n')
 158                 os.close( file )
 159                 rshstr = rshstr + ORBInitRef
 160                 if theContainer == "FactoryServerPy" :
 161                     rshstr = rshstr + "'"
 162                 rshstr = rshstr + " > /tmp/" + theContainer + "_"
 163                 rshstr = rshstr + theComputer
 164                 rshstr = rshstr + ".log 2>&1 &"
 165                 os.system( rshstr )
 166                 MESSAGE( "FindOrStartContainer" + rshstr + " done" )
 167             else :
 168                 if theContainer.find('Py') == -1 :
 169                     aContainer = self.FindContainer( theComputer + "/" + "FactoryServer" )
 170                 else :
 171                     aContainer = self.FindContainer( theComputer + "/" + "FactoryServerPy" )
 172                 aContainer = aContainer.start_impl( theContainer )
 173
 174             count = 21
 175             while aContainer is None :
 176                 time.sleep(1)
 177                 count = count - 1
 178                 MESSAGE( str(count) + ". Waiting for " + theComputer + "/" + theContainer )
 179                 aContainer = self.FindContainer( theComputer + "/" + theContainer )
 180                 if count == 0 :
 181                     return aContainer
 182
 183         return  aContainer
 184         #os.system("rsh -n dm2s0017 /export/home/KERNEL_ROOT/bin/runSession SALOME_Container -ORBInitRef NameService=corbaname::dm2s0017:1515")
 185
 186     #-------------------------------------------------------------------------
 187
 188     def FindOrLoadComponent(self, containerName, componentName):
 189
 190         theComputer,theContainer = self.ContainerName( containerName )
 191         name = [CosNaming.NameComponent(theComputer,"dir"),
 192                 CosNaming.NameComponent(theContainer,"dir"),
 193                 CosNaming.NameComponent(componentName,"object")]
 194         try:
 195             obj = self._containerRootContext.resolve(name)
 196         except CosNaming.NamingContext.NotFound, ex:
 197             MESSAGE( "component " + componentName + " not found, trying to load" )
 198             container = self.FindContainer(theComputer + "/" + theContainer)
 199             if container is None:
 200                 MESSAGE( "container " + theComputer + "/" + theContainer + " not found in Naming Service, trying to start" )
 201                 if (theContainer != "FactoryServer") & (theContainer != "FactoryServerPy") :
 202                     if theContainer.find('Py') == -1 :
 203                         theFactorycontainer = "FactoryServer"
 204                     else :
 205                         theFactorycontainer = "FactoryServerPy"
 206                     Factorycontainer = self.FindContainer(theComputer + "/" + theFactorycontainer)
 207                     if Factorycontainer is None:
 208                         MESSAGE( "container " + theComputer + "/" + theFactorycontainer + " not found in Naming Service, trying to start" )
 209                         Factorycontainer = self.FindOrStartContainer(theComputer,theFactorycontainer)
 210                 else:
 211                     Factorycontainer = self.FindOrStartContainer(theComputer,theContainer)
 212                 if Factorycontainer != None :
 213                     container = self.FindOrStartContainer(theComputer,theContainer)
 214
 215             if container != None:
 216                 compoinfo = self._catalog.GetComponent(componentName)
 217                 if compoinfo is None:
 218                     MESSAGE( "component " + componentName + " not found in Module Catalog" )
 219                 else:
 220                     try:
 221                         machineName = theComputer
 222                         path = compoinfo.GetPathPrefix(machineName) + "/"
 223                     except SALOME_ModuleCatalog.NotFound, ex:
 224                         MESSAGE( "machine " + machineName + " not found in Module Catalog" )
 225                         MESSAGE( "trying localhost" )
 226                         try:
 227                             path = compoinfo.GetPathPrefix("localhost") + "/"
 228                         except SALOME_ModuleCatalog.NotFound, ex:
 229                             path = ""
 230                     implementation = path + "lib" + componentName + "Engine.so"
 231                     MESSAGE( "Trying to load " + implementation )
 232                     try:
 233                         component = container.load_impl(componentName, implementation)
 234                         MESSAGE( "component " + component._get_instanceName() + " launched !" )
 235                         return component
 236                     except:
 237                         MESSAGE( "component " + componentName + " NOT launched !" )
 238
 239         else:
 240             try:
 241                 component = obj._narrow(Engines.Component)
 242                 if component is None:
 243                     MESSAGE( componentName + " is not a component !" )
 244                 else:
 245                     MESSAGE( "component " + component._get_instanceName() + " found !" )
 246                 return component
 247             except:
 248                 MESSAGE( componentName + " failure" )
 249                 return None