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annotate roundup/cgi/wsgi_handler.py @ 7037:22183e7d1443

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flake8 whitepace, indents, var names address: B007 Loop control variable 'id' not used within the loop body. If this is intended, start the name with an underscore. E122 continuation line missing indentation or outdented E127 continuation line over-indented for visual indent E128 continuation line under-indented for visual indent E129 visually indented line with same indent as next logical line E701 multiple statements on one line (colon) E703 statement ends with a semicolon E741 ambiguous variable name 'l'
author John Rouillard <rouilj@ieee.org>
date Mon, 10 Oct 2022 15:43:13 -0400
parents d32d43e4a5ba
children 07ce4e4110f5
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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 import weakref
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9
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10 from contextlib import contextmanager
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11
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12 from roundup.anypy.html import html_escape
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13
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14 import roundup.instance
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15 from roundup.cgi import TranslationService
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16 from roundup.anypy import http_
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17 from roundup.anypy.strings import s2b
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18
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19 from roundup.cgi.client import BinaryFieldStorage
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20
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21 BaseHTTPRequestHandler = http_.server.BaseHTTPRequestHandler
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22 DEFAULT_ERROR_MESSAGE = http_.server.DEFAULT_ERROR_MESSAGE
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24
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25 class Headers(object):
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26 """ Idea more or less stolen from the 'apache.py' in same directory.
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27 Except that wsgi stores http headers in environment.
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28 """
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29 def __init__(self, environ):
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30 self.environ = environ
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31
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32 def mangle_name(self, name):
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33 """ Content-Type is handled specially, it doesn't have a HTTP_
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34 prefix in cgi.
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35 """
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36 n = name.replace('-', '_').upper()
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37 if n == 'CONTENT_TYPE':
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38 return n
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39 return 'HTTP_' + n
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40
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41 def get(self, name, default=None):
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42 return self.environ.get(self.mangle_name(name), default)
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43 getheader = get
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44
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45
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46 class Writer(object):
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47 '''Perform a start_response if need be when we start writing.'''
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48 def __init__(self, request):
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49 self.request = request #weakref.ref(request)
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50
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51 def write(self, data):
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52 f = self.request.get_wfile()
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53 self.write = f
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54 return self.write(data)
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55
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56
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57 class RequestHandler(object):
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58 def __init__(self, environ, start_response):
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59 self.__start_response = start_response
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60 self.__wfile = None
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61 self.headers = Headers(environ)
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62 self.rfile, self.wfile = None, Writer(self)
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63
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64 def start_response(self, headers, response_code):
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65 """Set HTTP response code"""
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66 message, explain = BaseHTTPRequestHandler.responses[response_code]
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67 self.__wfile = self.__start_response('%d %s' % (response_code,
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68 message), headers)
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69
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70 def get_wfile(self):
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71 if self.__wfile is None:
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72 raise ValueError('start_response() not called')
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73 return self.__wfile
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74
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75
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76 class RequestDispatcher(object):
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77 def __init__(self, home, debug=False, timing=False, lang=None,
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78 feature_flags=None):
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79 assert os.path.isdir(home), '%r is not a directory' % (home,)
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80 self.home = home
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81 self.debug = debug
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82 self.timing = timing
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83 self.feature_flags= feature_flags or {}
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84 self.tracker = None
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85 if lang:
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86 self.translator = TranslationService.get_translation(lang,
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87 tracker_home=home)
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88 else:
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89 self.translator = None
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90
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91 if "cache_tracker" in self.feature_flags:
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92 self.tracker = roundup.instance.open(self.home, not self.debug)
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93 else:
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94 self.preload()
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95
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96 def __call__(self, environ, start_response):
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97 """Initialize with `apache.Request` object"""
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98 request = RequestHandler(environ, start_response)
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99
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100 if environ['REQUEST_METHOD'] == 'OPTIONS':
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101 if environ["PATH_INFO"][:5] == "/rest":
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102 # rest does support options
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103 # This I hope will result in self.form=None
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104 environ['CONTENT_LENGTH'] = 0
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105 else:
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106 code = 501
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107 message, explain = BaseHTTPRequestHandler.responses[code]
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108 request.start_response([('Content-Type', 'text/html')],
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109 code)
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110 request.wfile.write(s2b(DEFAULT_ERROR_MESSAGE % locals()))
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111 return []
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112
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113 # need to strip the leading '/'
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114 environ["PATH_INFO"] = environ["PATH_INFO"][1:]
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115 if self.timing:
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116 environ["CGI_SHOW_TIMING"] = self.timing
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117
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118 if environ['REQUEST_METHOD'] in ("OPTIONS", "DELETE"):
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119 # these methods have no data. When we init tracker.Client
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120 # set form to None to get a properly initialized empty
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121 # form.
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122 form = None
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123 else:
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124 form = BinaryFieldStorage(fp=environ['wsgi.input'], environ=environ)
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125
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126 if "cache_tracker" in self.feature_flags:
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127 client = self.tracker.Client(self.tracker, request, environ, form,
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128 self.translator)
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129 try:
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130 client.main()
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131 except roundup.cgi.client.NotFound:
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parents: 6061
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132 request.start_response([('Content-Type', 'text/html')], 404)
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parents: 6061
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133 request.wfile.write(s2b('Not found: %s' %
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parents: 6061
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134 html_escape(client.path)))
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parents: 6387
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135 else:
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parents: 6387
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136 with self.get_tracker() as tracker:
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parents: 6387
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137 client = tracker.Client(tracker, request, environ, form,
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parents: 6387
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138 self.translator)
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parents: 6387
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139 try:
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parents: 6387
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140 client.main()
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parents: 6387
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141 except roundup.cgi.client.NotFound:
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parents: 6387
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142 request.start_response([('Content-Type', 'text/html')], 404)
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parents: 6387
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143 request.wfile.write(s2b('Not found: %s' %
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parents: 6387
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144 html_escape(client.path)))
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Richard Jones <richard@users.sourceforge.net>
parents:
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145
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Richard Jones <richard@users.sourceforge.net>
parents:
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146 # all body data has been written using wfile
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parents:
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147 return []
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parents:
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148
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149 def preload(self):
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150 """ Trigger pre-loading of imports and templates """
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151 with self.get_tracker():
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152 pass
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153
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154 @contextmanager
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parents: 6061
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155 def get_tracker(self):
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parents: 6061
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156 # get a new instance for each request
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parents: 6061
diff changeset
157 yield roundup.instance.open(self.home, not self.debug)
Roundup Issue Tracker: http://roundup-tracker.org/