Mercurial > libervia-backend
annotate src/bridge/bridge_constructor/dbus_core_template.py @ 367:fd9ba4eb0cdb
wix: removed image dir (now in a separate package)
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Sat, 18 Jun 2011 23:04:36 +0200 |
| parents | eb9d33ba4e36 |
| children | 3ea41a199b36 |
| rev | line source |
|---|---|
| 267 | 1 #!/usr/bin/python |
| 2 #-*- coding: utf-8 -*- | |
| 3 | |
| 4 """ | |
| 5 SAT: a jabber client | |
| 6 Copyright (C) 2009, 2010, 2011 Jérôme Poisson (goffi@goffi.org) | |
| 7 | |
| 8 This program is free software: you can redistribute it and/or modify | |
| 9 it under the terms of the GNU 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 This program 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 General Public License for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 20 """ | |
| 21 | |
| 22 | |
| 23 from bridge import Bridge | |
| 24 import dbus | |
| 25 import dbus.service | |
| 26 import dbus.mainloop.glib | |
|
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27 from logging import debug, info |
| 267 | 28 |
| 29 const_INT_PREFIX = "org.goffi.SAT" #Interface prefix | |
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30 const_OBJ_PATH = '/org/goffi/SAT/bridge' |
| 267 | 31 const_COMM_SUFFIX = ".communication" |
| 32 const_REQ_SUFFIX = ".request" | |
| 33 | |
| 34 class DbusObject(dbus.service.Object): | |
| 35 | |
| 36 def __init__(self, bus, path): | |
| 37 dbus.service.Object.__init__(self, bus, path) | |
| 38 debug("Init DbusObject...") | |
| 39 self.cb={} | |
| 40 | |
| 41 def register(self, name, cb): | |
| 42 self.cb[name]=cb | |
| 43 | |
| 44 ### signals ### | |
| 45 | |
| 46 ##SIGNALS_PART## | |
| 47 | |
| 48 ### methods ### | |
| 49 | |
| 50 ##METHODS_PART## | |
| 51 | |
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52 def __attributes(self, in_sign): |
| 267 | 53 """Return arguments to user given a in_sign |
| 54 @param in_sign: in_sign in the short form (using s,a,i,b etc) | |
| 55 @return: list of arguments that correspond to a in_sign (e.g.: "sss" return "arg1, arg2, arg3")""" | |
| 56 i=0 | |
| 57 idx=0 | |
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58 attr=[] |
| 267 | 59 while i<len(in_sign): |
| 60 if in_sign[i] not in ['b','y','n','i','x','q','u','t','d','s','a']: | |
| 61 raise ParseError("Unmanaged attribute type [%c]" % in_sign[i]) | |
| 62 | |
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63 attr.append("arg_%i" % idx) |
| 267 | 64 idx+=1 |
| 65 | |
| 66 if in_sign[i] == 'a': | |
| 67 i+=1 | |
| 68 if in_sign[i]!='{' and in_sign[i]!='(': #FIXME: must manage tuples out of arrays | |
| 69 i+=1 | |
| 70 continue #we have a simple type for the array | |
| 71 opening_car = in_sign[i] | |
| 72 assert(opening_car in ['{','(']) | |
| 73 closing_car = '}' if opening_car == '{' else ')' | |
| 74 opening_count = 1 | |
| 75 while (True): #we have a dict or a list of tuples | |
| 76 i+=1 | |
| 77 if i>=len(in_sign): | |
| 78 raise ParseError("missing }") | |
| 79 if in_sign[i] == opening_car: | |
| 80 opening_count+=1 | |
| 81 if in_sign[i] == closing_car: | |
| 82 opening_count-=1 | |
| 83 if opening_count == 0: | |
| 84 break | |
| 85 i+=1 | |
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86 return attr |
| 267 | 87 |
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88 def addMethod(self, name, int_suffix, in_sign, out_sign, async=False, doc={}): |
| 267 | 89 """Dynamically add a method to Dbus Bridge""" |
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90 _attributes = self.__attributes(in_sign) |
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91 |
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92 if async: |
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93 _attributes.extend(['callback','errback']) |
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94 |
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95 attributes = ', '.join(_attributes) |
| 267 | 96 |
| 97 code = compile ('def '+name+' (self,'+attributes+'): return self.cb["'+name+'"]('+attributes+')', '<DBus bridge>','exec') | |
| 98 exec (code) | |
| 99 method = locals()[name] | |
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100 async_callbacks = ('callback', 'errback') if async else None |
| 267 | 101 setattr(DbusObject, name, dbus.service.method( |
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102 const_INT_PREFIX+int_suffix, in_signature=in_sign, out_signature=out_sign, |
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103 async_callbacks=async_callbacks)(method)) |
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104 function = getattr(self, name) |
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105 func_table = self._dbus_class_table[self.__class__.__module__ + '.' + self.__class__.__name__][function._dbus_interface] |
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106 func_table[function.__name__] = function #Needed for introspection |
| 267 | 107 |
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108 def addSignal(self, name, int_suffix, signature, doc={}): |
| 267 | 109 """Dynamically add a signal to Dbus Bridge""" |
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110 attributes = ', '.join(self.__attributes(signature)) |
| 267 | 111 |
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112 #code = compile ('def '+name+' (self,'+attributes+'): debug ("'+name+' signal")', '<DBus bridge>','exec') #XXX: the debug is too annoying with xmllog |
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113 code = compile ('def '+name+' (self,'+attributes+'): pass', '<DBus bridge>','exec') |
| 267 | 114 exec (code) |
| 115 signal = locals()[name] | |
| 116 setattr(DbusObject, name, dbus.service.signal( | |
| 117 const_INT_PREFIX+int_suffix, signature=signature)(signal)) | |
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118 function = getattr(self, name) |
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119 func_table = self._dbus_class_table[self.__class__.__module__ + '.' + self.__class__.__name__][function._dbus_interface] |
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120 func_table[function.__name__] = function #Needed for introspection |
| 267 | 121 |
| 122 class DBusBridge(Bridge): | |
| 123 def __init__(self): | |
| 124 dbus.mainloop.glib.DBusGMainLoop(set_as_default=True) | |
| 125 Bridge.__init__(self) | |
| 126 info ("Init DBus...") | |
| 127 self.session_bus = dbus.SessionBus() | |
| 128 self.dbus_name = dbus.service.BusName(const_INT_PREFIX, self.session_bus) | |
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129 self.dbus_bridge = DbusObject(self.session_bus, const_OBJ_PATH) |
| 267 | 130 |
| 131 ##DIRECT_CALLS## | |
| 132 | |
| 133 def register(self, name, callback): | |
| 134 debug("registering DBus bridge method [%s]", name) | |
| 135 self.dbus_bridge.register(name, callback) | |
| 136 | |
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137 def addMethod(self, name, int_suffix, in_sign, out_sign, method, async=False, doc={}): |
| 267 | 138 """Dynamically add a method to Dbus Bridge""" |
| 139 print ("Adding method [%s] to DBus bridge" % name) | |
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140 self.dbus_bridge.addMethod(name, int_suffix, in_sign, out_sign, async, doc) |
| 267 | 141 self.register(name, method) |
| 142 | |
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143 def addSignal(self, name, int_suffix, signature, doc={}): |
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144 self.dbus_bridge.addSignal(name, int_suffix, signature, doc) |
| 267 | 145 setattr(DBusBridge, name, getattr(self.dbus_bridge, name)) |
| 146 |