Mercurial > libervia-backend

annotate src/bridge/bridge_constructor/dbus_frontend_template.py @ 771:bfabeedbf32e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
core: i18n refactoring: - _() is no more installed in __builtin__ - instead, there is a new sat.core.i18n module - added D_() method for deferred translation - languageSwitch method allow to dynamically change translation language - import gettext is tested against ImportError, and dummy methods are used when not available (mainly useful for Libervia)
author Goffi <goffi@goffi.org>
date Sun, 29 Dec 2013 17:06:01 +0100
parents f02e2c277f0c
children 1fe00f0c9a91
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
267
bdcd535e179e Bridge constructor:
Goffi <goffi@goffi.org>
parents:
diff changeset
1 #!/usr/bin/python
bdcd535e179e Bridge constructor:
Goffi <goffi@goffi.org>
parents:
diff changeset
2 #-*- coding: utf-8 -*-
bdcd535e179e Bridge constructor:
Goffi <goffi@goffi.org>
parents:
diff changeset
3
609
84a6e83157c2 fixed licences in docstrings (they are now in comments)
Goffi <goffi@goffi.org>
parents: 595
diff changeset
4 # SAT communication bridge
84a6e83157c2 fixed licences in docstrings (they are now in comments)
Goffi <goffi@goffi.org>
parents: 595
diff changeset
5 # Copyright (C) 2009, 2010, 2011, 2012, 2013 Jérôme Poisson (goffi@goffi.org)
267
bdcd535e179e Bridge constructor:
Goffi <goffi@goffi.org>
parents:
diff changeset
6
609
84a6e83157c2 fixed licences in docstrings (they are now in comments)
Goffi <goffi@goffi.org>
parents: 595
diff changeset
7 # This program is free software: you can redistribute it and/or modify
84a6e83157c2 fixed licences in docstrings (they are now in comments)
Goffi <goffi@goffi.org>
parents: 595
diff changeset
8 # it under the terms of the GNU Affero General Public License as published by
84a6e83157c2 fixed licences in docstrings (they are now in comments)
Goffi <goffi@goffi.org>
parents: 595
diff changeset
9 # the Free Software Foundation, either version 3 of the License, or
84a6e83157c2 fixed licences in docstrings (they are now in comments)
Goffi <goffi@goffi.org>
parents: 595
diff changeset
10 # (at your option) any later version.
267
bdcd535e179e Bridge constructor:
Goffi <goffi@goffi.org>
parents:
diff changeset
11
609
84a6e83157c2 fixed licences in docstrings (they are now in comments)
Goffi <goffi@goffi.org>
parents: 595
diff changeset
12 # This program is distributed in the hope that it will be useful,
84a6e83157c2 fixed licences in docstrings (they are now in comments)
Goffi <goffi@goffi.org>
parents: 595
diff changeset
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
84a6e83157c2 fixed licences in docstrings (they are now in comments)
Goffi <goffi@goffi.org>
parents: 595
diff changeset
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
84a6e83157c2 fixed licences in docstrings (they are now in comments)
Goffi <goffi@goffi.org>
parents: 595
diff changeset
15 # GNU Affero General Public License for more details.
267
bdcd535e179e Bridge constructor:
Goffi <goffi@goffi.org>
parents:
diff changeset
16
609
84a6e83157c2 fixed licences in docstrings (they are now in comments)
Goffi <goffi@goffi.org>
parents: 595
diff changeset
17 # You should have received a copy of the GNU Affero General Public License
84a6e83157c2 fixed licences in docstrings (they are now in comments)
Goffi <goffi@goffi.org>
parents: 595
diff changeset
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
267
bdcd535e179e Bridge constructor:
Goffi <goffi@goffi.org>
parents:
diff changeset
19
771
bfabeedbf32e core: i18n refactoring:
Goffi <goffi@goffi.org>
parents: 723
diff changeset
20 from sat.core.i18n import _
267
bdcd535e179e Bridge constructor:
Goffi <goffi@goffi.org>
parents:
diff changeset
21 from bridge_frontend import BridgeFrontend
535
790be337cc41 bridge: fixed D-Bus warning in frontend side of bridge
Goffi <goffi@goffi.org>
parents: 480
diff changeset
22 import dbus
371
3ea41a199b36 bridge refactoring: categories are now core and plugin instead of communication and request
Goffi <goffi@goffi.org>
parents: 363
diff changeset
23 from logging import debug, error
627
d207c2186519 core, bridge, jp, quick_frontend: SàT stop more gracefully if bridge can't be initialised:
Goffi <goffi@goffi.org>
parents: 609
diff changeset
24 from sat.core.exceptions import BridgeExceptionNoService, BridgeInitError
267
bdcd535e179e Bridge constructor:
Goffi <goffi@goffi.org>
parents:
diff changeset
25
535
790be337cc41 bridge: fixed D-Bus warning in frontend side of bridge
Goffi <goffi@goffi.org>
parents: 480
diff changeset
26 from dbus.mainloop.glib import DBusGMainLoop
790be337cc41 bridge: fixed D-Bus warning in frontend side of bridge
Goffi <goffi@goffi.org>
parents: 480
diff changeset
27 DBusGMainLoop(set_as_default=True)
790be337cc41 bridge: fixed D-Bus warning in frontend side of bridge
Goffi <goffi@goffi.org>
parents: 480
diff changeset
28
595
1f160467f5de Fix pep8 support in src/bridge.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 587
diff changeset
29 const_INT_PREFIX = "org.goffi.SAT" # Interface prefix
1f160467f5de Fix pep8 support in src/bridge.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 587
diff changeset
30 const_ERROR_PREFIX = const_INT_PREFIX + ".error"
359
eb9d33ba4e36 bridge: templates' constants can now be overrided
Goffi <goffi@goffi.org>
parents: 337
diff changeset
31 const_OBJ_PATH = '/org/goffi/SAT/bridge'
371
3ea41a199b36 bridge refactoring: categories are now core and plugin instead of communication and request
Goffi <goffi@goffi.org>
parents: 363
diff changeset
32 const_CORE_SUFFIX = ".core"
3ea41a199b36 bridge refactoring: categories are now core and plugin instead of communication and request
Goffi <goffi@goffi.org>
parents: 363
diff changeset
33 const_PLUGIN_SUFFIX = ".plugin"
359
eb9d33ba4e36 bridge: templates' constants can now be overrided
Goffi <goffi@goffi.org>
parents: 337
diff changeset
34
595
1f160467f5de Fix pep8 support in src/bridge.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 587
diff changeset
35
267
bdcd535e179e Bridge constructor:
Goffi <goffi@goffi.org>
parents:
diff changeset
36 class DBusBridgeFrontend(BridgeFrontend):
bdcd535e179e Bridge constructor:
Goffi <goffi@goffi.org>
parents:
diff changeset
37 def __init__(self):
bdcd535e179e Bridge constructor:
Goffi <goffi@goffi.org>
parents:
diff changeset
38 try:
bdcd535e179e Bridge constructor:
Goffi <goffi@goffi.org>
parents:
diff changeset
39 self.sessions_bus = dbus.SessionBus()
359
eb9d33ba4e36 bridge: templates' constants can now be overrided
Goffi <goffi@goffi.org>
parents: 337
diff changeset
40 self.db_object = self.sessions_bus.get_object(const_INT_PREFIX,
595
1f160467f5de Fix pep8 support in src/bridge.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 587
diff changeset
41 const_OBJ_PATH)
371
3ea41a199b36 bridge refactoring: categories are now core and plugin instead of communication and request
Goffi <goffi@goffi.org>
parents: 363
diff changeset
42 self.db_core_iface = dbus.Interface(self.db_object,
595
1f160467f5de Fix pep8 support in src/bridge.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 587
diff changeset
43 dbus_interface=const_INT_PREFIX + const_CORE_SUFFIX)
371
3ea41a199b36 bridge refactoring: categories are now core and plugin instead of communication and request
Goffi <goffi@goffi.org>
parents: 363
diff changeset
44 self.db_plugin_iface = dbus.Interface(self.db_object,
595
1f160467f5de Fix pep8 support in src/bridge.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 587
diff changeset
45 dbus_interface=const_INT_PREFIX + const_PLUGIN_SUFFIX)
1f160467f5de Fix pep8 support in src/bridge.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 587
diff changeset
46 except dbus.exceptions.DBusException, e:
1f160467f5de Fix pep8 support in src/bridge.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 587
diff changeset
47 if e._dbus_error_name == 'org.freedesktop.DBus.Error.ServiceUnknown':
267
bdcd535e179e Bridge constructor:
Goffi <goffi@goffi.org>
parents:
diff changeset
48 raise BridgeExceptionNoService
627
d207c2186519 core, bridge, jp, quick_frontend: SàT stop more gracefully if bridge can't be initialised:
Goffi <goffi@goffi.org>
parents: 609
diff changeset
49 elif e._dbus_error_name == 'org.freedesktop.DBus.Error.NotSupported':
d207c2186519 core, bridge, jp, quick_frontend: SàT stop more gracefully if bridge can't be initialised:
Goffi <goffi@goffi.org>
parents: 609
diff changeset
50 print u"D-Bus is not launched, please see README to see instructions on how to launch it"
d207c2186519 core, bridge, jp, quick_frontend: SàT stop more gracefully if bridge can't be initialised:
Goffi <goffi@goffi.org>
parents: 609
diff changeset
51 raise BridgeInitError
267
bdcd535e179e Bridge constructor:
Goffi <goffi@goffi.org>
parents:
diff changeset
52 else:
bdcd535e179e Bridge constructor:
Goffi <goffi@goffi.org>
parents:
diff changeset
53 raise e
371
3ea41a199b36 bridge refactoring: categories are now core and plugin instead of communication and request
Goffi <goffi@goffi.org>
parents: 363
diff changeset
54 #props = self.db_core_iface.getProperties()
267
bdcd535e179e Bridge constructor:
Goffi <goffi@goffi.org>
parents:
diff changeset
55
371
3ea41a199b36 bridge refactoring: categories are now core and plugin instead of communication and request
Goffi <goffi@goffi.org>
parents: 363
diff changeset
56 def register(self, functionName, handler, iface="core"):
3ea41a199b36 bridge refactoring: categories are now core and plugin instead of communication and request
Goffi <goffi@goffi.org>
parents: 363
diff changeset
57 if iface == "core":
3ea41a199b36 bridge refactoring: categories are now core and plugin instead of communication and request
Goffi <goffi@goffi.org>
parents: 363
diff changeset
58 self.db_core_iface.connect_to_signal(functionName, handler)
3ea41a199b36 bridge refactoring: categories are now core and plugin instead of communication and request
Goffi <goffi@goffi.org>
parents: 363
diff changeset
59 elif iface == "plugin":
3ea41a199b36 bridge refactoring: categories are now core and plugin instead of communication and request
Goffi <goffi@goffi.org>
parents: 363
diff changeset
60 self.db_plugin_iface.connect_to_signal(functionName, handler)
3ea41a199b36 bridge refactoring: categories are now core and plugin instead of communication and request
Goffi <goffi@goffi.org>
parents: 363
diff changeset
61 else:
3ea41a199b36 bridge refactoring: categories are now core and plugin instead of communication and request
Goffi <goffi@goffi.org>
parents: 363
diff changeset
62 error(_('Unknown interface'))
267
bdcd535e179e Bridge constructor:
Goffi <goffi@goffi.org>
parents:
diff changeset
63
568
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
64 def __getattribute__(self, name):
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
65 """ usual __getattribute__ if the method exists, else try to find a plugin method """
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
66 try:
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
67 return object.__getattribute__(self, name)
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
68 except AttributeError:
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
69 # The attribute is not found, we try the plugin proxy to find the requested method
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
70
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
71 def getPluginMethod(*args, **kwargs):
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
72 # We first check if we have an async call. We detect this in two ways:
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
73 # - if we have the 'callback' and 'errback' keyword arguments
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
74 # - or if the last two arguments are callable
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
75
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
76 async = False
587
952322b1d490 Remove trailing whitespaces.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 572
diff changeset
77
568
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
78 if kwargs:
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
79 if 'callback' in kwargs and 'errback' in kwargs:
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
80 async = True
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
81 _callback = kwargs.pop('callback')
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
82 _errback = kwargs.pop('errback')
595
1f160467f5de Fix pep8 support in src/bridge.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 587
diff changeset
83 elif len(args) >= 2 and callable(args[-1]) and callable(args[-2]):
568
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
84 async = True
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
85 args = list(args)
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
86 _errback = args.pop()
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
87 _callback = args.pop()
587
952322b1d490 Remove trailing whitespaces.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 572
diff changeset
88
568
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
89 method = getattr(self.db_plugin_iface, name)
587
952322b1d490 Remove trailing whitespaces.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 572
diff changeset
90
568
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
91 if async:
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
92 kwargs['reply_handler'] = _callback
595
1f160467f5de Fix pep8 support in src/bridge.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 587
diff changeset
93 kwargs['error_handler'] = lambda err: _errback(err._dbus_error_name[len(const_ERROR_PREFIX) + 1:])
568
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
94
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
95 return method(*args, **kwargs)
587
952322b1d490 Remove trailing whitespaces.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 572
diff changeset
96
568
239abc5484c9 bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
Goffi <goffi@goffi.org>
parents: 562
diff changeset
97 return getPluginMethod
723
f02e2c277f0c bridge: fixed bridge_constructor
Goffi <goffi@goffi.org>
parents: 709
diff changeset
98 ##METHODS_PART##