Mercurial > libervia-backend
annotate libervia/backend/core/launcher.py @ 4094:c3b68fdc2de7
component AP gateway: fix handling of XMPP comments authors:
the gateway was supposing that comments where emitted from PEP of author. While this is
the case for most blog posts, it's not for comments. Instead the component is now using
`author_jid` which is retrieved by XEP-0277 plugin, and reject the item if the auhor is
not verified (i.e. if `publisher` attribute is not set by XMPP service).
author | Goffi <goffi@goffi.org> |
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date | Mon, 12 Jun 2023 14:50:43 +0200 |
parents | 84f6bee6440d |
children | 3dbaf179c50d |
rev | line source |
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1 #!/usr/bin/env python3 |
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2 |
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3 # Libervia: an XMPP client |
3479 | 4 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org) |
3099 | 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. |
4 | 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 """Script launching SàT backend""" |
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20 |
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21 import sys |
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22 import os |
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23 import argparse |
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24 from pathlib import Path |
3028 | 25 from configparser import ConfigParser |
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26 from twisted.application import app |
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27 from twisted.python import usage |
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28 from libervia.backend.core.constants import Const as C |
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29 |
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30 |
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31 class LiberviaLogger(app.AppLogger): |
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32 |
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33 def start(self, application): |
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34 # logging is initialised by libervia.baceknd.core.log_config via the Twisted |
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35 # plugin, nothing to do here |
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36 self._initialLog() |
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37 |
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38 def stop(self): |
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39 pass |
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40 |
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41 |
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42 class Launcher: |
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43 APP_NAME=C.APP_NAME |
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44 APP_NAME_FILE=C.APP_NAME_FILE |
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45 |
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46 @property |
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47 def NOT_RUNNING_MSG(self): |
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48 return f"{self.APP_NAME} is *NOT* running" |
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49 |
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50 def cmd_no_subparser(self, args): |
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51 """Command launched by default""" |
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52 args.extra_args = [] |
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53 self.cmd_background(args) |
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54 |
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55 def cmd_background(self, args): |
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56 self.run_twistd(args) |
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57 |
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58 def cmd_foreground(self, args): |
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59 self.run_twistd(args, twistd_opts=['--nodaemon']) |
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60 |
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61 def cmd_debug(self, args): |
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62 self.run_twistd(args, twistd_opts=['--debug']) |
463 | 63 |
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64 def cmd_stop(self, args): |
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65 import signal |
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66 import time |
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67 config = self.get_config() |
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68 pid_file = self.get_pid_file(config) |
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69 if not pid_file.is_file(): |
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70 print(self.NOT_RUNNING_MSG) |
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71 sys.exit(0) |
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72 try: |
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73 pid = int(pid_file.read_text()) |
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74 except Exception as e: |
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75 print(f"Can't read PID file at {pid_file}: {e}") |
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76 # we use the same exit code as DATA_ERROR in CLI frontend |
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77 sys.exit(17) |
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78 print(f"Terminating {self.APP_NAME}…") |
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79 os.kill(pid, signal.SIGTERM) |
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80 kill_started = time.time() |
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81 state = "init" |
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82 import errno |
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83 while True: |
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84 try: |
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85 os.kill(pid, 0) |
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86 except OSError as e: |
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87 if e.errno == errno.ESRCH: |
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88 break |
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89 elif e.errno == errno.EPERM: |
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90 print(f"Can't kill {self.APP_NAME}, the process is owned by an other user", file=sys.stderr) |
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91 sys.exit(18) |
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92 else: |
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93 raise e |
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94 time.sleep(0.2) |
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95 now = time.time() |
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96 if state == 'init' and now - kill_started > 5: |
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97 if state == 'init': |
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98 state = 'waiting' |
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99 print(f"Still waiting for {self.APP_NAME} to be terminated…") |
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100 elif state == 'waiting' and now - kill_started > 10: |
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101 state == 'killing' |
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102 print("Waiting for too long, we kill the process") |
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103 os.kill(pid, signal.SIGKILL) |
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104 sys.exit(1) |
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105 |
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106 sys.exit(0) |
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107 |
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108 def cmd_status(self, args): |
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109 config = self.get_config() |
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110 pid_file = self.get_pid_file(config) |
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111 if pid_file.is_file(): |
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112 import errno |
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113 try: |
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114 pid = int(pid_file.read_text()) |
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115 except Exception as e: |
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116 print(f"Can't read PID file at {pid_file}: {e}") |
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117 # we use the same exit code as DATA_ERROR in CLI frontend |
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118 sys.exit(17) |
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119 # we check if there is a process |
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120 # inspired by https://stackoverflow.com/a/568285 and https://stackoverflow.com/a/6940314 |
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121 try: |
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122 os.kill(pid, 0) |
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123 except OSError as e: |
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124 if e.errno == errno.ESRCH: |
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125 running = False |
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126 elif e.errno == errno.EPERM: |
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127 print("Process {pid} is run by an other user") |
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128 running = True |
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129 else: |
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130 running = True |
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131 |
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132 if running: |
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133 print(f"{self.APP_NAME} is running (pid: {pid})") |
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134 sys.exit(0) |
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135 else: |
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136 print(f"{self.NOT_RUNNING_MSG}, but a pid file is present (bad exit ?): {pid_file}") |
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137 sys.exit(2) |
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138 else: |
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139 print(self.NOT_RUNNING_MSG) |
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140 sys.exit(1) |
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141 |
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142 def parse_args(self): |
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143 parser = argparse.ArgumentParser(description=f"Launch {self.APP_NAME} backend") |
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144 parser.set_defaults(cmd=self.cmd_no_subparser) |
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145 subparsers = parser.add_subparsers() |
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146 extra_help = f"arguments to pass to {self.APP_NAME} service" |
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147 |
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148 bg_parser = subparsers.add_parser( |
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149 'background', |
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150 aliases=['bg'], |
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151 help=f"run {self.APP_NAME} backend in background (as a daemon)") |
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152 bg_parser.add_argument('extra_args', nargs=argparse.REMAINDER, help=extra_help) |
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153 bg_parser.set_defaults(cmd=self.cmd_background) |
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154 |
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155 fg_parser = subparsers.add_parser( |
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156 'foreground', |
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157 aliases=['fg'], |
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158 help=f"run {self.APP_NAME} backend in foreground") |
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159 fg_parser.add_argument('extra_args', nargs=argparse.REMAINDER, help=extra_help) |
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160 fg_parser.set_defaults(cmd=self.cmd_foreground) |
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161 |
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162 dbg_parser = subparsers.add_parser( |
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163 'debug', |
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164 aliases=['dbg'], |
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165 help=f"run {self.APP_NAME} backend in debug mode") |
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166 dbg_parser.add_argument('extra_args', nargs=argparse.REMAINDER, help=extra_help) |
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167 dbg_parser.set_defaults(cmd=self.cmd_debug) |
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168 |
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169 stop_parser = subparsers.add_parser( |
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170 'stop', |
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171 help=f"stop running {self.APP_NAME} backend") |
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172 stop_parser.set_defaults(cmd=self.cmd_stop) |
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173 |
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174 status_parser = subparsers.add_parser( |
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175 'status', |
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176 help=f"indicate if {self.APP_NAME} backend is running") |
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177 status_parser.set_defaults(cmd=self.cmd_status) |
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178 |
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179 return parser.parse_args() |
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180 |
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181 def get_config(self): |
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182 config = ConfigParser(defaults=C.DEFAULT_CONFIG) |
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183 try: |
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184 config.read(C.CONFIG_FILES) |
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185 except Exception as e: |
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186 print (rf"/!\ Can't read main config! {e}") |
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187 sys.exit(1) |
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188 return config |
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189 |
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190 def get_pid_file(self, config): |
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191 pid_dir = Path(config.get('DEFAULT', 'pid_dir')).expanduser() |
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192 return pid_dir / f"{self.APP_NAME_FILE}.pid" |
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193 |
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194 def run_twistd(self, args, twistd_opts=None): |
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195 """Run twistd settings options with args""" |
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196 from twisted.python.runtime import platformType |
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197 if platformType == "win32": |
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198 from twisted.scripts._twistw import (ServerOptions, |
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199 WindowsApplicationRunner as app_runner) |
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200 else: |
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201 from twisted.scripts._twistd_unix import (ServerOptions, |
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202 UnixApplicationRunner as app_runner) |
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203 |
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204 app_runner.loggerFactory = LiberviaLogger |
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205 server_options = ServerOptions() |
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206 config = self.get_config() |
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207 pid_file = self.get_pid_file(config) |
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208 log_dir = Path(config.get('DEFAULT', 'log_dir')).expanduser() |
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209 log_file = log_dir / f"{self.APP_NAME_FILE}.log" |
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210 server_opts = [ |
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211 '--no_save', |
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212 '--pidfile', str(pid_file), |
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213 '--logfile', str(log_file), |
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214 ] |
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215 if twistd_opts is not None: |
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216 server_opts.extend(twistd_opts) |
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217 server_opts.append(self.APP_NAME_FILE) |
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218 if args.extra_args: |
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219 try: |
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220 args.extra_args.remove('--') |
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221 except ValueError: |
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222 pass |
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223 server_opts.extend(args.extra_args) |
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224 try: |
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225 server_options.parseOptions(server_opts) |
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226 except usage.error as ue: |
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227 print(server_options) |
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228 print("%s: %s" % (sys.argv[0], ue)) |
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229 sys.exit(1) |
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230 else: |
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231 runner = app_runner(server_options) |
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232 runner.run() |
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233 if runner._exitSignal is not None: |
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234 app._exitWithSignal(runner._exitSignal) |
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235 try: |
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236 sys.exit(app._exitCode) |
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237 except AttributeError: |
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238 pass |
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239 |
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240 @classmethod |
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241 def run(cls): |
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242 args = cls().parse_args() |
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243 args.cmd(args) |
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244 |
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245 |
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246 if __name__ == '__main__': |
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247 Launcher.run() |