Mercurial > libervia-backend
annotate src/bridge/bridge_constructor/dbus_frontend_template.py @ 943:71926ec2114d
core (memory): entities cache improvments:
- entities cache is no more limited to bare jid
- resources are now automatically updated in bare jid cache
author | Goffi <goffi@goffi.org> |
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date | Fri, 28 Mar 2014 18:07:17 +0100 |
parents | 1fe00f0c9a91 |
children | 301b342c697a |
rev | line source |
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267 | 1 #!/usr/bin/python |
2 #-*- coding: utf-8 -*- | |
3 | |
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4 # SAT communication bridge |
811 | 5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 Jérôme Poisson (goffi@goffi.org) |
267 | 6 |
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7 # This program is free software: you can redistribute it and/or modify |
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8 # it under the terms of the GNU Affero General Public License as published by |
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9 # the Free Software Foundation, either version 3 of the License, or |
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10 # (at your option) any later version. |
267 | 11 |
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12 # This program is distributed in the hope that it will be useful, |
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 # GNU Affero General Public License for more details. |
267 | 16 |
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17 # You should have received a copy of the GNU Affero General Public License |
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>. |
267 | 19 |
771 | 20 from sat.core.i18n import _ |
267 | 21 from bridge_frontend import BridgeFrontend |
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22 import dbus |
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23 from logging import debug, error |
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24 from sat.core.exceptions import BridgeExceptionNoService, BridgeInitError |
267 | 25 |
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26 from dbus.mainloop.glib import DBusGMainLoop |
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27 DBusGMainLoop(set_as_default=True) |
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28 |
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29 const_INT_PREFIX = "org.goffi.SAT" # Interface prefix |
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30 const_ERROR_PREFIX = const_INT_PREFIX + ".error" |
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31 const_OBJ_PATH = '/org/goffi/SAT/bridge' |
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32 const_CORE_SUFFIX = ".core" |
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33 const_PLUGIN_SUFFIX = ".plugin" |
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34 |
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35 |
267 | 36 class DBusBridgeFrontend(BridgeFrontend): |
37 def __init__(self): | |
38 try: | |
39 self.sessions_bus = dbus.SessionBus() | |
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40 self.db_object = self.sessions_bus.get_object(const_INT_PREFIX, |
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41 const_OBJ_PATH) |
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42 self.db_core_iface = dbus.Interface(self.db_object, |
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43 dbus_interface=const_INT_PREFIX + const_CORE_SUFFIX) |
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44 self.db_plugin_iface = dbus.Interface(self.db_object, |
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45 dbus_interface=const_INT_PREFIX + const_PLUGIN_SUFFIX) |
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46 except dbus.exceptions.DBusException, e: |
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47 if e._dbus_error_name == 'org.freedesktop.DBus.Error.ServiceUnknown': |
267 | 48 raise BridgeExceptionNoService |
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49 elif e._dbus_error_name == 'org.freedesktop.DBus.Error.NotSupported': |
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50 print u"D-Bus is not launched, please see README to see instructions on how to launch it" |
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51 raise BridgeInitError |
267 | 52 else: |
53 raise e | |
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54 #props = self.db_core_iface.getProperties() |
267 | 55 |
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56 def register(self, functionName, handler, iface="core"): |
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57 if iface == "core": |
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58 self.db_core_iface.connect_to_signal(functionName, handler) |
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59 elif iface == "plugin": |
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60 self.db_plugin_iface.connect_to_signal(functionName, handler) |
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61 else: |
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62 error(_('Unknown interface')) |
267 | 63 |
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64 def __getattribute__(self, name): |
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65 """ usual __getattribute__ if the method exists, else try to find a plugin method """ |
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66 try: |
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67 return object.__getattribute__(self, name) |
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68 except AttributeError: |
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69 # The attribute is not found, we try the plugin proxy to find the requested method |
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70 |
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71 def getPluginMethod(*args, **kwargs): |
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72 # We first check if we have an async call. We detect this in two ways: |
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73 # - if we have the 'callback' and 'errback' keyword arguments |
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74 # - or if the last two arguments are callable |
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75 |
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76 async = False |
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77 |
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78 if kwargs: |
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79 if 'callback' in kwargs and 'errback' in kwargs: |
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80 async = True |
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81 _callback = kwargs.pop('callback') |
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82 _errback = kwargs.pop('errback') |
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83 elif len(args) >= 2 and callable(args[-1]) and callable(args[-2]): |
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84 async = True |
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85 args = list(args) |
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86 _errback = args.pop() |
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87 _callback = args.pop() |
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88 |
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89 method = getattr(self.db_plugin_iface, name) |
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90 |
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91 if async: |
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92 kwargs['reply_handler'] = _callback |
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93 kwargs['error_handler'] = lambda err: _errback(err._dbus_error_name[len(const_ERROR_PREFIX) + 1:]) |
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94 |
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95 return method(*args, **kwargs) |
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96 |
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97 return getPluginMethod |
723 | 98 ##METHODS_PART## |