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annotate sat/bridge/bridge_constructor/constructors/pb/pb_core_template.py @ 3020:af9d71303605

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plugin XEP-0198: don't crash if transport is None in onAckTimeOut
author Goffi <goffi@goffi.org>
date Sun, 21 Jul 2019 10:16:32 +0200
parents 0f277708e2ae
children ab2696e34d29
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #!/usr/bin/env python2
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2 # -*- coding: utf-8 -*-
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3
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4 # SAT: a jabber client
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5 # Copyright (C) 2009-2019 Jérôme Poisson (goffi@goffi.org)
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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.
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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.
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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/>.
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20
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21 from sat.core.log import getLogger
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22
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23 from twisted.spread import jelly, pb
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24 from twisted.internet import reactor
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25 log = getLogger(__name__)
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27
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28 ## jelly hack
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29 # we monkey patch jelly to handle namedtuple
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30 ori_jelly = jelly._Jellier.jelly
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31
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32
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33 def fixed_jelly(self, obj):
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34 """this method fix handling of namedtuple"""
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35 if isinstance(obj, tuple) and not obj is tuple:
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36 obj = tuple(obj)
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37 return ori_jelly(self, obj)
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38
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39
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40 jelly._Jellier.jelly = fixed_jelly
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41
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42
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43 class PBRoot(pb.Root):
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44 def __init__(self):
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45 self.signals_handlers = []
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46
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47 def remote_initBridge(self, signals_handler):
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48 self.signals_handlers.append(signals_handler)
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49 log.info(u"registered signal handler")
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50
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51 def sendSignalEb(self, failure, signal_name):
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52 log.error(
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53 u"Error while sending signal {name}: {msg}".format(
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54 name=signal_name, msg=failure
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55 )
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56 )
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57
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58 def sendSignal(self, name, args, kwargs):
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59 to_remove = []
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60 for handler in self.signals_handlers:
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61 try:
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62 d = handler.callRemote(name, *args, **kwargs)
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63 except pb.DeadReferenceError:
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64 to_remove.append(handler)
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65 else:
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66 d.addErrback(self.sendSignalEb, name)
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67 if to_remove:
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68 for handler in to_remove:
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69 log.debug(u"Removing signal handler for dead frontend")
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70 self.signals_handlers.remove(handler)
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71
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72 def _bridgeDeactivateSignals(self):
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73 if hasattr(self, "signals_paused"):
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74 log.warning(u"bridge signals already deactivated")
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75 if self.signals_handler:
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76 self.signals_paused.extend(self.signals_handler)
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77 else:
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78 self.signals_paused = self.signals_handlers
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79 self.signals_handlers = []
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80 log.debug(u"bridge signals have been deactivated")
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81
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82 def _bridgeReactivateSignals(self):
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83 try:
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84 self.signals_handlers = self.signals_paused
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85 except AttributeError:
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86 log.debug(u"signals were already activated")
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87 else:
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88 del self.signals_paused
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89 log.debug(u"bridge signals have been reactivated")
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90
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91 ##METHODS_PART##
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92
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93
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94 class Bridge(object):
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95 def __init__(self):
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96 log.info("Init Perspective Broker...")
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97 self.root = PBRoot()
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98 reactor.listenTCP(8789, pb.PBServerFactory(self.root))
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99
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100 def sendSignal(self, name, *args, **kwargs):
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101 self.root.sendSignal(name, args, kwargs)
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102
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103 def remote_initBridge(self, signals_handler):
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104 self.signals_handlers.append(signals_handler)
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105 log.info(u"registered signal handler")
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106
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107 def register_method(self, name, callback):
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108 log.debug("registering PB bridge method [%s]" % name)
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109 setattr(self.root, "remote_" + name, callback)
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110 #  self.root.register_method(name, callback)
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111
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112 def addMethod(self, name, int_suffix, in_sign, out_sign, method, async=False, doc={}):
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113 """Dynamically add a method to PB Bridge"""
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114 # FIXME: doc parameter is kept only temporary, the time to remove it from calls
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115 log.debug("Adding method {name} to PB bridge".format(name=name))
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116 self.register_method(name, method)
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117
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118 def addSignal(self, name, int_suffix, signature, doc={}):
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119 log.debug("Adding signal {name} to PB bridge".format(name=name))
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120 setattr(
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121 self, name, lambda *args, **kwargs: self.sendSignal(name, *args, **kwargs)
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122 )
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123
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124 def bridgeDeactivateSignals(self):
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125 """Stop sending signals to bridge
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126
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127 Mainly used for mobile frontends, when the frontend is paused
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128 """
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129 self.root._bridgeDeactivateSignals()
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130
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131 def bridgeReactivateSignals(self):
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132 """Send again signals to bridge
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133
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134 Should only be used after bridgeDeactivateSignals has been called
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135 """
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136 self.root._bridgeReactivateSignals()
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5e79ba00c1e2 bridbe(pb): Perspective Broker bridge, first draft
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137
5e79ba00c1e2 bridbe(pb): Perspective Broker bridge, first draft
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138 ##SIGNALS_PART##