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annotate roundup/cgi/wsgi_handler.py @ 5418:55f09ca366c4

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Python 3 preparation: StringIO. This generally arranges for StringIO and cStringIO references to use io.StringIO for Python 3 but io.BytesIO for Python 2, consistent with the string representations generally used in Roundup. A special FasterStringIO in the TAL code, which referenced internals of the old Python 2 StringIO module, is cut down so it doesn't actually do anything beyond the StringIO class it inherits from (it would also be reasonable to remove FasterStringIO completely). One place in roundup_server.py clearly needing binary I/O is made to use io.BytesIO unconditionally.
author Joseph Myers <jsm@polyomino.org.uk>
date Wed, 25 Jul 2018 09:08:29 +0000
parents 277e91bf7936
children 3a07c57d72bb
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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 cgi
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9 import weakref
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10
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11 import roundup.instance
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12 from roundup.cgi import TranslationService
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13 from roundup.anypy import http_
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14 BaseHTTPRequestHandler = http_.server.BaseHTTPRequestHandler
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15 DEFAULT_ERROR_MESSAGE = http_.server.DEFAULT_ERROR_MESSAGE
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16
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17
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18 class Writer(object):
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19 '''Perform a start_response if need be when we start writing.'''
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20 def __init__(self, request):
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21 self.request = request #weakref.ref(request)
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22 def write(self, data):
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23 f = self.request.get_wfile()
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24 self.write = f
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25 return f(data)
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26
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27 class RequestDispatcher(object):
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28 def __init__(self, home, debug=False, timing=False, lang=None):
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29 assert os.path.isdir(home), '%r is not a directory'%(home,)
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30 self.home = home
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31 self.debug = debug
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32 self.timing = timing
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33 if lang:
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34 self.translator = TranslationService.get_translation(lang,
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35 tracker_home=home)
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36 else:
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37 self.translator = None
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38
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39 def __call__(self, environ, start_response):
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40 """Initialize with `apache.Request` object"""
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41 self.environ = environ
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42 request = RequestDispatcher(self.home, self.debug, self.timing)
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43 request.__start_response = start_response
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44
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45 request.wfile = Writer(request)
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46 request.__wfile = None
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47
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48 if environ ['REQUEST_METHOD'] == 'OPTIONS':
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49 code = 501
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50 message, explain = BaseHTTPRequestHandler.responses[code]
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51 request.start_response([('Content-Type', 'text/html'),
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52 ('Connection', 'close')], code)
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53 request.wfile.write(DEFAULT_ERROR_MESSAGE % locals())
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54 return []
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55
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56 tracker = roundup.instance.open(self.home, not self.debug)
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57
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58 # need to strip the leading '/'
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59 environ["PATH_INFO"] = environ["PATH_INFO"][1:]
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60 if request.timing:
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61 environ["CGI_SHOW_TIMING"] = request.timing
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62
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63 form = cgi.FieldStorage(fp=environ['wsgi.input'], environ=environ)
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64
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65 client = tracker.Client(tracker, request, environ, form,
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66 request.translator)
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67 try:
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68 client.main()
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69 except roundup.cgi.client.NotFound:
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70 request.start_response([('Content-Type', 'text/html')], 404)
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71 request.wfile.write('Not found: %s'%client.path)
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72
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73 # all body data has been written using wfile
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74 return []
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75
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76 def start_response(self, headers, response_code):
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77 """Set HTTP response code"""
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78 message, explain = BaseHTTPRequestHandler.responses[response_code]
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79 self.__wfile = self.__start_response('%d %s'%(response_code,
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80 message), headers)
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81
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82 def get_wfile(self):
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83 if self.__wfile is None:
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84 raise ValueError('start_response() not called')
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85 return self.__wfile
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86
Roundup Issue Tracker: http://roundup-tracker.org/