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annotate libervia/backend/plugins/plugin_xep_0166/models.py @ 4151:18026ce0819c

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core (xmpp): message reception workflow refactoring: - Call methods from a root async one instead of using Deferred callbacks chain. - Use a queue to be sure to process messages in order.
author Goffi <goffi@goffi.org>
date Wed, 22 Nov 2023 14:50:35 +0100
parents 0da563780ffc
children e11b13418ba6
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 # Libervia plugin for Jingle (XEP-0166)
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4 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)
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5
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6 # This program is free software: you can redistribute it and/or modify
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7 # it under the terms of the GNU Affero General Public License as published by
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8 # the Free Software Foundation, either version 3 of the License, or
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9 # (at your option) any later version.
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10
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11 # This program is distributed in the hope that it will be useful,
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 # GNU Affero General Public License for more details.
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15
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16 # You should have received a copy of the GNU Affero General Public License
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17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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18
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19
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20 import abc
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21 from dataclasses import dataclass
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22 from typing import Awaitable, Callable, Union
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23
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24 from twisted.internet import defer
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25 from twisted.words.xish import domish
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26
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27 from libervia.backend.core import exceptions
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28 from libervia.backend.core.core_types import SatXMPPEntity
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29 from libervia.backend.core.i18n import _
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31 class BaseApplicationHandler(abc.ABC):
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32
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33 @abc.abstractmethod
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34 async def jingle_preflight(
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35 self,
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36 client: SatXMPPEntity,
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37 session: dict,
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38 description_elt: domish.Element
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39 ) -> None:
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40 """Called when preparation steps are needed by a plugin
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41
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42 Notably used by XEP-0353 when a initiation message is received
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43 """
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44 pass
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46 @abc.abstractmethod
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47 async def jingle_preflight_info(
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48 self,
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49 client: SatXMPPEntity,
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50 session: dict,
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51 info_type: str,
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52 info_data: dict|None = None
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53 ) -> None:
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54 """Called when we have new information during preflight
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55
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56 Notably used by XEP-0353 to signal ringing
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57 """
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58 pass
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59
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60 @abc.abstractmethod
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61 async def jingle_preflight_cancel(
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62 self,
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63 client: SatXMPPEntity,
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64 session: dict,
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65 cancel_error: exceptions.CancelError
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66 ) -> None:
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67 """Called when preflight initiation is cancelled
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68
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69 Notably used by XEP-0353 when an initiation message is cancelled
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70 """
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71 pass
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72
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73 @abc.abstractmethod
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74 def jingle_request_confirmation(
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75 self,
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76 client: SatXMPPEntity,
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77 action: str,
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78 session: dict,
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79 content_name: str,
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80 desc_elt: domish.Element,
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81 ) -> Union[
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82 Callable[..., Union[bool, defer.Deferred]],
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83 Callable[..., Awaitable[bool]]
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84 ]:
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85 """If present, it is called on when session must be accepted.
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86 If not present, a generic accept dialog will be used.
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87
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88 @param session: Jingle Session
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89 @param desc_elt: <description> element
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90 @return: True if the session is accepted.
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91 A Deferred can be returned.
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92 """
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93 pass
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94
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95 @abc.abstractmethod
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96 def jingle_session_init(
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97 self,
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98 client: SatXMPPEntity,
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99 session: dict,
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100 content_name: str,
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101 *args, **kwargs
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102 ) -> Union[
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103 Callable[..., domish.Element],
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104 Callable[..., Awaitable[domish.Element]]
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105 ]:
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106 """Must return the domish.Element used for initial content.
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107
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108 @param client: SatXMPPEntity instance
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109 @param session: Jingle Session
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110 @param content_name: Name of the content
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111 @return: The domish.Element used for initial content
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112 """
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113 pass
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114
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115 @abc.abstractmethod
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116 def jingle_handler(
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117 self,
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118 client: SatXMPPEntity,
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119 action: str,
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120 session: dict,
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121 content_name: str,
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122 transport_elt: domish.Element
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123 ) -> Union[
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124 Callable[..., None],
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125 Callable[..., Awaitable[None]]
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126 ]:
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127 """Called on several actions to negotiate the application or transport.
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128
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129 @param client: SatXMPPEntity instance
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130 @param action: Jingle action
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131 @param session: Jingle Session
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132 @param content_name: Name of the content
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133 @param transport_elt: Transport element
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134 """
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135 pass
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136
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137 @abc.abstractmethod
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138 def jingle_terminate(
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139 self,
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140 client: SatXMPPEntity,
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141 action: str,
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142 session: dict,
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143 content_name: str,
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144 reason_elt: domish.Element
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145 ) -> Union[
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146 Callable[..., None],
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147 Callable[..., Awaitable[None]]
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148 ]:
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149 """Called on session terminate, with reason_elt.
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150 May be used to clean session.
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151
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152 @param reason_elt: Reason element
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153 """
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154 pass
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155
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156
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157 class BaseTransportHandler(abc.ABC):
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158
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159 @abc.abstractmethod
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160 def jingle_session_init(
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161 self,
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162 client: SatXMPPEntity,
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163 session: dict,
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164 content_name: str,
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165 *args, **kwargs
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166 ) -> Union[
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167 Callable[..., domish.Element],
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168 Callable[..., Awaitable[domish.Element]]
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169 ]:
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170 """Must return the domish.Element used for initial content.
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171
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172 @param client: SatXMPPEntity instance
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173 @param session: Jingle Session
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174 @param content_name: Name of the content
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175 @return: The domish.Element used for initial content
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176 """
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177 pass
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178
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179 @abc.abstractmethod
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180 def jingle_handler(
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181 self,
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182 client: SatXMPPEntity,
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183 action: str,
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184 session: dict,
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185 content_name: str,
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186 reason_elt: domish.Element
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187 ) -> Union[
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188 Callable[..., None],
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189 Callable[..., Awaitable[None]]
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190 ]:
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191 """Called on several actions to negotiate the application or transport.
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192
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193 @param client: SatXMPPEntity instance
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194 @param action: Jingle action
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195 @param session: Jingle Session
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196 @param content_name: Name of the content
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197 @param reason_elt: <reason> element
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198 """
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199 pass
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200
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201
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202 @dataclass(frozen=True)
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203 class ApplicationData:
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204 namespace: str
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205 handler: BaseApplicationHandler
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206
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207
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208 @dataclass(frozen=True)
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209 class TransportData:
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210 namespace: str
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211 handler: BaseTransportHandler
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212 priority: int
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213
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214
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215 @dataclass(frozen=True)
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216 class ContentData:
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217 application: ApplicationData
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218 app_args: list
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219 app_kwargs: dict
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220 transport_data: dict
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221 content_name: str