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annotate roundup/cgi/wsgi_handler.py @ 8446:14c7c07b32d8

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feature: add thread local trace_id and trace_reason to logging. Added trace_id to default logging so that all logs for a given request share the same trace_id. This allows correlation of logs across a request. admin_guide.txt, upgrading.txt: add docs update sample configs to include trace_id. rewrite logging docs in admin_guide. Hopefully they are clearer now. clean up some stuff in the logging config file docs. admin.py: add decorators to run_command to enable trace_id. change calls to db.commit() to use run_command to get trace_id. configuration.py: clean up imports. update docstrings, comments and inline docs. add trace_id to default log format. add function for testing decorated with trace_id. add support for dumping stack trace in logging. add check for pytest in sys.modules to enable log propagation when pytest is running. Otherwise tests fail as the caplog logger doesn't see the roundup logs. logcontext.py: new file to handle thread local contextvar mangement. mailgw.py: add decorators for trace_id etc. scripts/roundup_xlmrpc_server.py: add decorators for trace_id etc. fix encoding bug turning bytes into a string. fix command line issue where we can't set encoding. (not sure if changing encoding via command line even works) cgi/client.py decorate two entry points for trace_id etc. cgi/wsgi_handler.py: decorate entry point for trace_id etc. test/test_config.py: add test for trace_id in new log format. test various cases for sinfo and errors in formating msg.
author John Rouillard <rouilj@ieee.org>
date Tue, 16 Sep 2025 22:53:00 -0400
parents dbeb6bf056c7
children 617d55f1d518
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1 # WSGI interface for Roundup Issue Tracker
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2 #
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3 # This module is free software, you may redistribute it
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4 # and/or modify under the same terms as Python.
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5 #
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6
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7 import os
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8 from contextlib import contextmanager
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9
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10 import roundup.instance
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11 from roundup.anypy import http_
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12 from roundup.anypy.html import html_escape
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13 from roundup.anypy.strings import s2b
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14 from roundup.cgi import TranslationService
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15 from roundup.cgi.client import BinaryFieldStorage
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16 from roundup.logcontext import gen_trace_id, store_trace_reason
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17
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18 BaseHTTPRequestHandler = http_.server.BaseHTTPRequestHandler
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19 DEFAULT_ERROR_MESSAGE = http_.server.DEFAULT_ERROR_MESSAGE
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20
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21 try:
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22 # python2 is missing this definition
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23 http_.server.BaseHTTPRequestHandler.responses[429]
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24 except KeyError:
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25 http_.server.BaseHTTPRequestHandler.responses[429] = (
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26 'Too Many Requests',
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27 'The user has sent too many requests in '
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28 'a given amount of time ("rate limiting")',
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29 )
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31
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32 class Headers(object):
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33 """ Idea more or less stolen from the 'apache.py' in same directory.
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34 Except that wsgi stores http headers in environment.
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35 """
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36 def __init__(self, environ):
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37 self.environ = environ
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38
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39 def mangle_name(self, name):
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40 """ Content-Type is handled specially, it doesn't have a HTTP_
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41 prefix in cgi.
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42 """
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43 n = name.replace('-', '_').upper()
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44 if n == 'CONTENT_TYPE':
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45 return n
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46 return 'HTTP_' + n
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47
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48 def get(self, name, default=None):
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49 return self.environ.get(self.mangle_name(name), default)
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50 getheader = get
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51
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52
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53 class Writer(object):
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54 '''Perform a start_response if need be when we start writing.'''
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55 def __init__(self, request):
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56 self.request = request # weakref.ref(request)
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57
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58 def write(self, data):
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59 f = self.request.get_wfile()
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60 self.write = f
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61 return self.write(data)
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63
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64 class RequestHandler(object):
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65 def __init__(self, environ, start_response):
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66 self.__start_response = start_response
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67 self.__wfile = None
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68 self.headers = Headers(environ)
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69 self.rfile, self.wfile = None, Writer(self)
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70
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71 def start_response(self, headers, response_code):
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72 """Set HTTP response code"""
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73 message, _explain = BaseHTTPRequestHandler.responses[response_code]
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74 self.__wfile = self.__start_response('%d %s' % (response_code,
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75 message), headers)
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76
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77 def get_wfile(self):
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78 if self.__wfile is None:
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79 raise ValueError('start_response() not called')
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80 return self.__wfile
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81
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82
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83 class RequestDispatcher(object):
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84 def __init__(self, home, debug=False, timing=False, lang=None,
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85 feature_flags=None):
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86 if not os.path.isdir(home):
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87 raise ValueError('%r is not a directory' % (home,))
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88 self.home = home
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89 self.debug = debug
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90 self.timing = timing
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91 self.feature_flags = feature_flags or {}
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92 self.tracker = None
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93 if lang:
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94 self.translator = TranslationService.get_translation(
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95 lang,
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96 tracker_home=home)
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97 else:
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98 self.translator = None
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99
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100 if "cache_tracker" not in self.feature_flags or \
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101 self.feature_flags["cache_tracker"] is not False:
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102 self.tracker = roundup.instance.open(self.home, not self.debug)
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103 else:
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104 self.preload()
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105
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106 @gen_trace_id()
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107 @store_trace_reason("wsgi")
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108 def __call__(self, environ, start_response):
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109 """Initialize with `apache.Request` object"""
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110 request = RequestHandler(environ, start_response)
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111
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112 if environ['REQUEST_METHOD'] == 'OPTIONS':
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113 if environ["PATH_INFO"][:5] == "/rest":
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114 # rest does support options
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115 # This I hope will result in self.form=None
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116 environ['CONTENT_LENGTH'] = 0
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117 else:
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118 code = 501
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119 message, explain = BaseHTTPRequestHandler.responses[code]
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120 request.start_response([('Content-Type', 'text/html')],
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121 code)
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122 request.wfile.write(s2b(DEFAULT_ERROR_MESSAGE % locals()))
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123 return []
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124
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125 # need to strip the leading '/'
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126 environ["PATH_INFO"] = environ["PATH_INFO"][1:]
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127 if self.timing:
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128 environ["CGI_SHOW_TIMING"] = self.timing
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129
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130 if environ['REQUEST_METHOD'] in ("OPTIONS", "DELETE"):
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131 # these methods have no data. When we init tracker.Client
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132 # set form to None to get a properly initialized empty
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133 # form.
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134 form = None
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135 else:
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136 form = BinaryFieldStorage(fp=environ['wsgi.input'], environ=environ)
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137
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138 if "cache_tracker" not in self.feature_flags or \
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139 self.feature_flags["cache_tracker"] is not False:
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140 client = self.tracker.Client(self.tracker, request, environ, form,
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141 self.translator)
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142 try:
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143 client.main()
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144 except roundup.cgi.client.NotFound:
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145 request.start_response([('Content-Type', 'text/html')], 404)
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146 request.wfile.write(s2b('Not found: %s' %
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147 html_escape(client.path)))
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148 else:
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149 with self.get_tracker() as tracker:
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150 client = tracker.Client(tracker, request, environ, form,
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151 self.translator)
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152 try:
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153 client.main()
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154 except roundup.cgi.client.NotFound:
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155 request.start_response([('Content-Type', 'text/html')], 404)
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156 request.wfile.write(s2b('Not found: %s' %
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157 html_escape(client.path)))
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158
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159 # all body data has been written using wfile
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160 return []
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161
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162 def preload(self):
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163 """ Trigger pre-loading of imports and templates """
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164 with self.get_tracker():
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165 pass
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166
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167 @contextmanager
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168 def get_tracker(self):
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169 # get a new instance for each request
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parents: 6061
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170 yield roundup.instance.open(self.home, not self.debug)
Roundup Issue Tracker: http://roundup-tracker.org/