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annotate libervia/backend/plugins/plugin_xep_0166/models.py @ 4288:f46891f2c9cb

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plugin XEP-0166: handle `content-add` action + expose `get_transport`: - `content-add` is now handled at this plugin level (implementation needs to be done in apps and transports plugins). - `get_transport` is now exposed. rel 447
author Goffi <goffi@goffi.org>
date Mon, 29 Jul 2024 03:30:58 +0200
parents 0d7bb4df2343
children
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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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32 class BaseApplicationHandler(abc.ABC):
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33
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34 @abc.abstractmethod
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35 async def jingle_preflight(
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36 self, client: SatXMPPEntity, session: dict, description_elt: domish.Element
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37 ) -> None:
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38 """Called when preparation steps are needed by a plugin
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39
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40 Notably used by XEP-0353 when a initiation message is received
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41 """
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42 pass
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44 @abc.abstractmethod
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45 async def jingle_preflight_info(
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46 self,
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47 client: SatXMPPEntity,
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48 session: dict,
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49 info_type: str,
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50 info_data: dict | None = None,
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51 ) -> None:
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52 """Called when we have new information during preflight
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53
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54 Notably used by XEP-0353 to signal ringing
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55 """
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56 pass
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57
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58 @abc.abstractmethod
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59 async def jingle_preflight_cancel(
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60 self, client: SatXMPPEntity, session: dict, cancel_error: exceptions.CancelError
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61 ) -> None:
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62 """Called when preflight initiation is cancelled
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63
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64 Notably used by XEP-0353 when an initiation message is cancelled
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65 """
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66 pass
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67
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68 @abc.abstractmethod
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69 def jingle_request_confirmation(
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70 self,
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71 client: SatXMPPEntity,
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72 action: str,
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73 session: dict,
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74 content_name: str,
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75 desc_elt: domish.Element,
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76 ) -> Union[
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77 Callable[..., Union[bool, defer.Deferred]], Callable[..., Awaitable[bool]]
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78 ]:
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79 """If present, it is called on when session must be accepted.
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80 If not present, a generic accept dialog will be used.
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81
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82 @param session: Jingle Session
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83 @param desc_elt: <description> element
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84 @return: True if the session is accepted.
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85 A Deferred can be returned.
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86 """
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87 pass
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88
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89 @abc.abstractmethod
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90 def jingle_session_init(
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91 self, client: SatXMPPEntity, session: dict, content_name: str, *args, **kwargs
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92 ) -> Union[Callable[..., domish.Element], Callable[..., Awaitable[domish.Element]]]:
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93 """Must return the domish.Element used for initial content.
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94
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95 @param client: SatXMPPEntity instance
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96 @param session: Jingle Session
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97 @param content_name: Name of the content
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98 @return: The domish.Element used for initial content
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99 """
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100 pass
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101
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102 @abc.abstractmethod
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103 def jingle_handler(
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104 self,
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105 client: SatXMPPEntity,
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106 action: str,
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107 session: dict,
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108 content_name: str,
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109 transport_elt: domish.Element,
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110 ) -> Union[Callable[..., None], Callable[..., Awaitable[None]]]:
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111 """Called on several actions to negotiate the application or transport.
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112
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113 @param client: SatXMPPEntity instance
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114 @param action: Jingle action
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115 @param session: Jingle Session
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116 @param content_name: Name of the content
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117 @param transport_elt: Transport element
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118 """
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119 pass
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120
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121 @abc.abstractmethod
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122 def jingle_terminate(
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123 self,
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124 client: SatXMPPEntity,
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125 action: str,
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126 session: dict,
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127 content_name: str,
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128 reason_elt: domish.Element,
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129 ) -> Union[Callable[..., None], Callable[..., Awaitable[None]]]:
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130 """Called on session terminate, with reason_elt.
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131 May be used to clean session.
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132
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133 @param reason_elt: Reason element
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134 """
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135 pass
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136
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137
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138 class BaseTransportHandler(abc.ABC):
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139
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140 def is_usable(self, client, content_data: "ContentData") -> bool:
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141 """Return True if this transport is usable with given content
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142
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143 This method provides a default implementation that always returns True. It can
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144 be overridden in subclasses to provide custom usability logic.
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145
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146 @param client: SatXMPPEntity instance
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147 @param content_data: Jingle content data.
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148 @return: True if the transport is usable with this content, False otherwise
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149 """
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150 return True
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151
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152 @abc.abstractmethod
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153 def jingle_session_init(
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154 self, client: SatXMPPEntity, session: dict, content_name: str, *args, **kwargs
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155 ) -> Union[Callable[..., domish.Element], Callable[..., Awaitable[domish.Element]]]:
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156 """Must return the domish.Element used for initial content.
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157
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158 @param client: SatXMPPEntity instance
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159 @param session: Jingle Session
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160 @param content_name: Name of the content
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161 @return: The domish.Element used for initial content
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162 """
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163 pass
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164
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165 @abc.abstractmethod
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166 def jingle_handler(
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167 self,
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168 client: SatXMPPEntity,
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169 action: str,
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170 session: dict,
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171 content_name: str,
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172 reason_elt: domish.Element,
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173 ) -> Union[Callable[..., None], Callable[..., Awaitable[None]]]:
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174 """Called on several actions to negotiate the application or transport.
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175
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176 @param client: SatXMPPEntity instance
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177 @param action: Jingle action
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178 @param session: Jingle Session
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179 @param content_name: Name of the content
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180 @param reason_elt: <reason> element
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181 """
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182 pass
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183
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184
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185 @dataclass(frozen=True)
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186 class ApplicationData:
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187 namespace: str
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188 handler: BaseApplicationHandler
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189 priority: int
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190
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191
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192 @dataclass(frozen=True)
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193 class TransportData:
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194 namespace: str
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195 handler: BaseTransportHandler
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196 priority: int
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197
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198
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199 @dataclass(frozen=True)
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200 class ContentData:
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201 application: ApplicationData
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202 app_args: list
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203 app_kwargs: dict
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204 transport_data: dict
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205 content_name: str