shinken/pyro_wrapper.py

   1 #!/usr/bin/env python
   2 #Copyright (C) 2009-2010 :
   3 #    Gabes Jean, naparuba@gmail.com
   4 #    Gerhard Lausser, Gerhard.Lausser@consol.de
   5 #
   6 #This file is part of Shinken.
   7 #
   8 #Shinken is free software: you can redistribute it and/or modify
   9 #it under the terms of the GNU Affero General Public License as published by
  10 #the Free Software Foundation, either version 3 of the License, or
  11 #(at your option) any later version.
  12 #
  13 #Shinken 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
  16 #GNU Affero General Public License for more details.
  17 #
  18 #You should have received a copy of the GNU Affero General Public License
  19 #along with Shinken.  If not, see <http://www.gnu.org/licenses/>.
  20
  21
  22 #This class is a wrapper for managing Pyro 3 and 4 version
  23
  24
  25 import sys
  26 import Pyro.core
  27
  28
  29 #Try to see if we are Python 3 or 4
  30 try:
  31     Pyro.core.ObjBase
  32     #Some one already go here, so we are in 4 if None
  33     if Pyro.core.ObjBase == None:
  34         raise AttributeError
  35     print "Using Pyro", Pyro.constants.VERSION
  36     pyro_version = 3
  37     protocol = 'PYROLOC'
  38     Pyro.errors.CommunicationError = Pyro.errors.ProtocolError
  39
  40
  41     def register(daemon, obj, name):
  42         return daemon.connect(obj, name)
  43
  44
  45     def unregister(daemon, obj):
  46         daemon.disconnect(obj)
  47
  48
  49     def get_sockets(daemon):
  50         return daemon.getServerSockets()
  51
  52
  53     def handleRequests(daemon, s):
  54         daemon.handleRequests()
  55
  56
  57     def init_daemon(host, port, use_ssl=False):
  58         Pyro.core.initServer()
  59         if use_ssl:
  60             daemon = Pyro.core.Daemon(host=host, port=port, prtcol='PYROSSL')
  61         else:
  62             daemon = Pyro.core.Daemon(host=host, port=port)
  63         if daemon.port != port:
  64             print "Sorry, the port %d is not free" % port
  65             sys.exit(1)
  66         return daemon
  67
  68
  69     def create_uri(address, port, obj_name, use_ssl):
  70         if not use_ssl:
  71             return "PYROLOC://%s:%d/%s" % (address, port, obj_name)
  72         else:
  73             return "PYROLOCSSL://%s:%d/%s" % (address, port, obj_name)
  74
  75     #Timeout way is also changed between 3 and 4
  76     #it's a method in 3, a property in 4
  77     def set_timeout(con, timeout):
  78         con._setTimeout(timeout)
  79
  80
  81     def getProxy(uri):
  82         return Pyro.core.getProxyForURI(uri)
  83
  84
  85 except AttributeError:
  86     print "Using Pyro", Pyro.constants.VERSION
  87     pyro_version = 4
  88     #Ok, in Pyro 4, interface do not need to
  89     #inherit from ObjBase, just object is good
  90     Pyro.core.ObjBase = object
  91     Pyro.errors.URIError = Pyro.errors.ProtocolError
  92     protocol = 'PYRO'
  93     Pyro.core.getProxyForURI = Pyro.core.Proxy
  94     #Hack for Pyro 4 : with it, there is
  95     #no more way to send huge packet!
  96     import socket
  97     if hasattr(socket, 'MSG_WAITALL'):
  98         del socket.MSG_WAITALL
  99
 100
 101     def register(daemon, obj, name):
 102         daemon.register(obj)
 103
 104
 105     def unregister(daemon, obj, name):
 106         daemon.unregister(obj)
 107
 108
 109     def get_sockets(daemon):
 110         return daemon.sockets()
 111
 112
 113     def handleRequests(daemon, s):
 114         daemon.handleRequests([s])
 115
 116
 117     def init_daemon(host, port):
 118         #Pyro 4 i by default thread, should do select
 119         #(I hate threads!)
 120         Pyro.config.SERVERTYPE="select"
 121         #And port already use now raise an exception
 122         try:
 123             daemon = Pyro.core.Daemon(host=host, port=port)
 124         except socket.error, exp:
 125             print "Sorry, the port %d is not free : %s" % (port, str(exp))
 126             sys.exit(1)
 127         return daemon
 128
 129
 130     def create_uri(address, port, obj_name):
 131         return "PYRO:%s@%s:%d" % (obj_name, address, port)
 132
 133
 134     def set_timeout(con, timeout):
 135         con._pyroTimeout = timeout
 136
 137
 138     def getProxy(uri):
 139         return Pyro.core.Proxy(uri)