Mercurial > libervia-backend
annotate libervia/backend/bridge/bridge_constructor/constructors/pb/pb_core_template.py @ 4118:07370d2a9bde
plugin XEP-0167: keep media order when starting a call:
media content order is relevant when building Jingle contents/SDP notably for bundling.
This patch fixes the previous behaviour of always using the same order by keeping the
order of the data (i.e. order of original SDP offer). Previous behaviour could lead to
call failure.
rel 424
author | Goffi <goffi@goffi.org> |
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date | Tue, 03 Oct 2023 15:15:24 +0200 |
parents | 4b842c1fb686 |
children | 0d7bb4df2343 |
rev | line source |
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3028 | 1 #!/usr/bin/env python3 |
3137 | 2 |
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3 |
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4 # SAT: a jabber client |
3479 | 5 # Copyright (C) 2009-2021 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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19 |
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20 |
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21 import dataclasses |
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22 from functools import partial |
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23 from pathlib import Path |
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24 from twisted.spread import jelly, pb |
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25 from twisted.internet import reactor |
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26 from libervia.backend.core.log import getLogger |
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27 from libervia.backend.tools import config |
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28 |
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29 log = getLogger(__name__) |
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30 |
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31 |
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32 ## jelly hack |
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33 # we monkey patch jelly to handle namedtuple |
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34 ori_jelly = jelly._Jellier.jelly |
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35 |
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36 |
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37 def fixed_jelly(self, obj): |
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38 """this method fix handling of namedtuple""" |
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39 if isinstance(obj, tuple) and not obj is tuple: |
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40 obj = tuple(obj) |
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41 return ori_jelly(self, obj) |
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42 |
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43 |
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44 jelly._Jellier.jelly = fixed_jelly |
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45 |
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46 |
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47 @dataclasses.dataclass(eq=False) |
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48 class HandlerWrapper: |
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49 # we use a wrapper to keep signals handlers because RemoteReference doesn't support |
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50 # comparison (other than equality), making it unusable with a list |
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51 handler: pb.RemoteReference |
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52 |
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53 |
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54 class PBRoot(pb.Root): |
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55 def __init__(self): |
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56 self.signals_handlers = [] |
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57 |
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58 def remote_init_bridge(self, signals_handler): |
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59 self.signals_handlers.append(HandlerWrapper(signals_handler)) |
3028 | 60 log.info("registered signal handler") |
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61 |
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62 def send_signal_eb(self, failure_, signal_name): |
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63 if not failure_.check(pb.PBConnectionLost): |
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64 log.error( |
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65 f"Error while sending signal {signal_name}: {failure_}", |
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66 ) |
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67 |
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68 def send_signal(self, name, args, kwargs): |
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69 to_remove = [] |
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70 for wrapper in self.signals_handlers: |
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71 handler = wrapper.handler |
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72 try: |
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73 d = handler.callRemote(name, *args, **kwargs) |
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74 except pb.DeadReferenceError: |
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75 to_remove.append(wrapper) |
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76 else: |
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77 d.addErrback(self.send_signal_eb, name) |
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78 if to_remove: |
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79 for wrapper in to_remove: |
3028 | 80 log.debug("Removing signal handler for dead frontend") |
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81 self.signals_handlers.remove(wrapper) |
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82 |
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83 def _bridge_deactivate_signals(self): |
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84 if hasattr(self, "signals_paused"): |
3028 | 85 log.warning("bridge signals already deactivated") |
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86 if self.signals_handler: |
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87 self.signals_paused.extend(self.signals_handler) |
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88 else: |
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89 self.signals_paused = self.signals_handlers |
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90 self.signals_handlers = [] |
3028 | 91 log.debug("bridge signals have been deactivated") |
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92 |
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93 def _bridge_reactivate_signals(self): |
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94 try: |
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95 self.signals_handlers = self.signals_paused |
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96 except AttributeError: |
3028 | 97 log.debug("signals were already activated") |
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98 else: |
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99 del self.signals_paused |
3028 | 100 log.debug("bridge signals have been reactivated") |
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101 |
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102 ##METHODS_PART## |
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103 |
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104 |
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105 class bridge(object): |
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106 def __init__(self): |
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107 log.info("Init Perspective Broker...") |
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108 self.root = PBRoot() |
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109 conf = config.parse_main_conf() |
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110 get_conf = partial(config.get_conf, conf, "bridge_pb", "") |
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111 conn_type = get_conf("connection_type", "unix_socket") |
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112 if conn_type == "unix_socket": |
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113 local_dir = Path(config.config_get(conf, "", "local_dir")).resolve() |
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114 socket_path = local_dir / "bridge_pb" |
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115 log.info(f"using UNIX Socket at {socket_path}") |
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116 reactor.listenUNIX( |
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117 str(socket_path), pb.PBServerFactory(self.root), mode=0o600 |
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118 ) |
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119 elif conn_type == "socket": |
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120 port = int(get_conf("port", 8789)) |
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121 log.info(f"using TCP Socket at port {port}") |
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122 reactor.listenTCP(port, pb.PBServerFactory(self.root)) |
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123 else: |
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124 raise ValueError(f"Unknown pb connection type: {conn_type!r}") |
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125 |
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126 def send_signal(self, name, *args, **kwargs): |
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127 self.root.send_signal(name, args, kwargs) |
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128 |
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129 def remote_init_bridge(self, signals_handler): |
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130 self.signals_handlers.append(signals_handler) |
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132 |
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133 def register_method(self, name, callback): |
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134 log.debug("registering PB bridge method [%s]" % name) |
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135 setattr(self.root, "remote_" + name, callback) |
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136 # self.root.register_method(name, callback) |
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137 |
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138 def add_method( |
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139 self, name, int_suffix, in_sign, out_sign, method, async_=False, doc={} |
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140 ): |
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141 """Dynamically add a method to PB bridge""" |
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142 # FIXME: doc parameter is kept only temporary, the time to remove it from calls |
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143 log.debug("Adding method {name} to PB bridge".format(name=name)) |
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144 self.register_method(name, method) |
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145 |
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146 def add_signal(self, name, int_suffix, signature, doc={}): |
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147 log.debug("Adding signal {name} to PB bridge".format(name=name)) |
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148 setattr( |
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149 self, name, lambda *args, **kwargs: self.send_signal(name, *args, **kwargs) |
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150 ) |
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151 |
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152 def bridge_deactivate_signals(self): |
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153 """Stop sending signals to bridge |
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154 |
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155 Mainly used for mobile frontends, when the frontend is paused |
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156 """ |
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157 self.root._bridge_deactivate_signals() |
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158 |
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159 def bridge_reactivate_signals(self): |
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160 """Send again signals to bridge |
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161 |
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162 Should only be used after bridge_deactivate_signals has been called |
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163 """ |
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164 self.root._bridge_reactivate_signals() |
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165 |
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166 ##SIGNALS_PART## |