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annotate roundup/cgi/wsgi_handler.py @ 7121:cb39a6c95cd3

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Fix Traceback on empty numeric order attribute
author Ralf Schlatterbeck <rsc@runtux.com>
date Thu, 19 Jan 2023 14:40:52 +0100
parents d32d43e4a5ba
children 07ce4e4110f5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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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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diff changeset
129 try:
274c2c082f68 factor out get_tracker so we can potentially customise if we want to reuse
Christof Meerwald <cmeerw@cmeerw.org>
parents: 6061
diff changeset
130 client.main()
274c2c082f68 factor out get_tracker so we can potentially customise if we want to reuse
Christof Meerwald <cmeerw@cmeerw.org>
parents: 6061
diff changeset
131 except roundup.cgi.client.NotFound:
274c2c082f68 factor out get_tracker so we can potentially customise if we want to reuse
Christof Meerwald <cmeerw@cmeerw.org>
parents: 6061
diff changeset
132 request.start_response([('Content-Type', 'text/html')], 404)
274c2c082f68 factor out get_tracker so we can potentially customise if we want to reuse
Christof Meerwald <cmeerw@cmeerw.org>
parents: 6061
diff changeset
133 request.wfile.write(s2b('Not found: %s' %
274c2c082f68 factor out get_tracker so we can potentially customise if we want to reuse
Christof Meerwald <cmeerw@cmeerw.org>
parents: 6061
diff changeset
134 html_escape(client.path)))
6747
d32d43e4a5ba wsgi can cache tracker instance enabled by feature flag.
John Rouillard <rouilj@ieee.org>
parents: 6387
diff changeset
135 else:
d32d43e4a5ba wsgi can cache tracker instance enabled by feature flag.
John Rouillard <rouilj@ieee.org>
parents: 6387
diff changeset
136 with self.get_tracker() as tracker:
d32d43e4a5ba wsgi can cache tracker instance enabled by feature flag.
John Rouillard <rouilj@ieee.org>
parents: 6387
diff changeset
137 client = tracker.Client(tracker, request, environ, form,
d32d43e4a5ba wsgi can cache tracker instance enabled by feature flag.
John Rouillard <rouilj@ieee.org>
parents: 6387
diff changeset
138 self.translator)
d32d43e4a5ba wsgi can cache tracker instance enabled by feature flag.
John Rouillard <rouilj@ieee.org>
parents: 6387
diff changeset
139 try:
d32d43e4a5ba wsgi can cache tracker instance enabled by feature flag.
John Rouillard <rouilj@ieee.org>
parents: 6387
diff changeset
140 client.main()
d32d43e4a5ba wsgi can cache tracker instance enabled by feature flag.
John Rouillard <rouilj@ieee.org>
parents: 6387
diff changeset
141 except roundup.cgi.client.NotFound:
d32d43e4a5ba wsgi can cache tracker instance enabled by feature flag.
John Rouillard <rouilj@ieee.org>
parents: 6387
diff changeset
142 request.start_response([('Content-Type', 'text/html')], 404)
d32d43e4a5ba wsgi can cache tracker instance enabled by feature flag.
John Rouillard <rouilj@ieee.org>
parents: 6387
diff changeset
143 request.wfile.write(s2b('Not found: %s' %
d32d43e4a5ba wsgi can cache tracker instance enabled by feature flag.
John Rouillard <rouilj@ieee.org>
parents: 6387
diff changeset
144 html_escape(client.path)))
3736
a2d22d0de0bc WSGI support via roundup.cgi.wsgi_handler
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
145
a2d22d0de0bc WSGI support via roundup.cgi.wsgi_handler
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
146 # all body data has been written using wfile
a2d22d0de0bc WSGI support via roundup.cgi.wsgi_handler
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
147 return []
a2d22d0de0bc WSGI support via roundup.cgi.wsgi_handler
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
148
6326
0343b6fea4b9 Factor preloading into a preload method
Ralf Schlatterbeck <rsc@runtux.com>
parents: 6321
diff changeset
149 def preload(self):
0343b6fea4b9 Factor preloading into a preload method
Ralf Schlatterbeck <rsc@runtux.com>
parents: 6321
diff changeset
150 """ Trigger pre-loading of imports and templates """
0343b6fea4b9 Factor preloading into a preload method
Ralf Schlatterbeck <rsc@runtux.com>
parents: 6321
diff changeset
151 with self.get_tracker():
0343b6fea4b9 Factor preloading into a preload method
Ralf Schlatterbeck <rsc@runtux.com>
parents: 6321
diff changeset
152 pass
0343b6fea4b9 Factor preloading into a preload method
Ralf Schlatterbeck <rsc@runtux.com>
parents: 6321
diff changeset
153
6080
274c2c082f68 factor out get_tracker so we can potentially customise if we want to reuse
Christof Meerwald <cmeerw@cmeerw.org>
parents: 6061
diff changeset
154 @contextmanager
274c2c082f68 factor out get_tracker so we can potentially customise if we want to reuse
Christof Meerwald <cmeerw@cmeerw.org>
parents: 6061
diff changeset
155 def get_tracker(self):
274c2c082f68 factor out get_tracker so we can potentially customise if we want to reuse
Christof Meerwald <cmeerw@cmeerw.org>
parents: 6061
diff changeset
156 # get a new instance for each request
274c2c082f68 factor out get_tracker so we can potentially customise if we want to reuse
Christof Meerwald <cmeerw@cmeerw.org>
parents: 6061
diff changeset
157 yield roundup.instance.open(self.home, not self.debug)
Roundup Issue Tracker: http://roundup-tracker.org/