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annotate sat/bridge/bridge_constructor/constructors/pb/pb_core_template.py @ 3398:467d6c709f1d

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test: fixed use of `client.host` in legacy test: those tests are not maintained anymore, but as the use of `client.host` as been fixed elsewhere, it was the occasion to do it there too. Those legacy tests should be ported or to the new workflow, or deleted if they are not relevant anymore.
author Goffi <goffi@goffi.org>
date Thu, 12 Nov 2020 14:53:15 +0100
parents 559a625a236b
children be6d91572633
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #!/usr/bin/env python3
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2
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3
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4 # SAT: a jabber client
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5 # Copyright (C) 2009-2020 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 import dataclasses
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22 from sat.core.log import getLogger
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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
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26 log = getLogger(__name__)
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27
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29 ## jelly hack
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30 # we monkey patch jelly to handle namedtuple
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31 ori_jelly = jelly._Jellier.jelly
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34 def fixed_jelly(self, obj):
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35 """this method fix handling of namedtuple"""
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36 if isinstance(obj, tuple) and not obj is tuple:
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37 obj = tuple(obj)
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38 return ori_jelly(self, obj)
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39
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41 jelly._Jellier.jelly = fixed_jelly
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43
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44 @dataclasses.dataclass(eq=False)
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45 class HandlerWrapper:
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46 # we use a wrapper to keep signals handlers because RemoteReference doesn't support
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47 # comparison (other than equality), making it unusable with a list
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48 handler: pb.RemoteReference
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49
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50
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51 class PBRoot(pb.Root):
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52 def __init__(self):
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53 self.signals_handlers = []
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54
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55 def remote_initBridge(self, signals_handler):
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56 self.signals_handlers.append(HandlerWrapper(signals_handler))
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57 log.info("registered signal handler")
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58
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59 def sendSignalEb(self, failure_, signal_name):
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60 if not failure_.check(pb.PBConnectionLost):
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61 log.error(
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62 f"Error while sending signal {signal_name}: {failure_}",
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63 )
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64
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65 def sendSignal(self, name, args, kwargs):
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66 to_remove = []
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67 for wrapper in self.signals_handlers:
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68 handler = wrapper.handler
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69 try:
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70 d = handler.callRemote(name, *args, **kwargs)
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71 except pb.DeadReferenceError:
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72 to_remove.append(wrapper)
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73 else:
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74 d.addErrback(self.sendSignalEb, name)
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75 if to_remove:
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76 for wrapper in to_remove:
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77 log.debug("Removing signal handler for dead frontend")
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78 self.signals_handlers.remove(wrapper)
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79
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80 def _bridgeDeactivateSignals(self):
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81 if hasattr(self, "signals_paused"):
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82 log.warning("bridge signals already deactivated")
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83 if self.signals_handler:
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84 self.signals_paused.extend(self.signals_handler)
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85 else:
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86 self.signals_paused = self.signals_handlers
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87 self.signals_handlers = []
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88 log.debug("bridge signals have been deactivated")
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89
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90 def _bridgeReactivateSignals(self):
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91 try:
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92 self.signals_handlers = self.signals_paused
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93 except AttributeError:
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94 log.debug("signals were already activated")
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95 else:
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96 del self.signals_paused
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97 log.debug("bridge signals have been reactivated")
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98
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99 ##METHODS_PART##
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100
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101
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102 class Bridge(object):
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103 def __init__(self):
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104 log.info("Init Perspective Broker...")
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105 self.root = PBRoot()
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106 reactor.listenTCP(8789, pb.PBServerFactory(self.root))
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107
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108 def sendSignal(self, name, *args, **kwargs):
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109 self.root.sendSignal(name, args, kwargs)
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110
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111 def remote_initBridge(self, signals_handler):
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112 self.signals_handlers.append(signals_handler)
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113 log.info("registered signal handler")
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114
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115 def register_method(self, name, callback):
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116 log.debug("registering PB bridge method [%s]" % name)
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117 setattr(self.root, "remote_" + name, callback)
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118 #  self.root.register_method(name, callback)
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119
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120 def addMethod(self, name, int_suffix, in_sign, out_sign, method, async_=False, doc={}):
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121 """Dynamically add a method to PB Bridge"""
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122 # FIXME: doc parameter is kept only temporary, the time to remove it from calls
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123 log.debug("Adding method {name} to PB bridge".format(name=name))
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124 self.register_method(name, method)
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125
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126 def addSignal(self, name, int_suffix, signature, doc={}):
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127 log.debug("Adding signal {name} to PB bridge".format(name=name))
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128 setattr(
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129 self, name, lambda *args, **kwargs: self.sendSignal(name, *args, **kwargs)
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130 )
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131
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132 def bridgeDeactivateSignals(self):
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133 """Stop sending signals to bridge
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134
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135 Mainly used for mobile frontends, when the frontend is paused
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136 """
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137 self.root._bridgeDeactivateSignals()
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138
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139 def bridgeReactivateSignals(self):
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140 """Send again signals to bridge
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141
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142 Should only be used after bridgeDeactivateSignals has been called
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143 """
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144 self.root._bridgeReactivateSignals()
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145
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146 ##SIGNALS_PART##