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annotate piecrust/serving/server.py @ 554:155c7e20414f

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serve: Fix timing information in the debug window.
author Ludovic Chabant <ludovic@chabant.com>
date Sat, 08 Aug 2015 22:22:22 -0700
parents cc6f3dbe3048
children daf8df5ade7d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 import io
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2 import os
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3 import gzip
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4 import time
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5 import os.path
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6 import hashlib
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7 import logging
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8 from werkzeug.exceptions import (
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9 NotFound, MethodNotAllowed, InternalServerError, HTTPException)
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10 from werkzeug.wrappers import Request, Response
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11 from jinja2 import FileSystemLoader, Environment
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12 from piecrust import CACHE_DIR, RESOURCES_DIR
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13 from piecrust.app import PieCrust
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14 from piecrust.rendering import QualifiedPage, PageRenderingContext, render_page
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15 from piecrust.serving.util import content_type_map, make_wrapped_file_response
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16 from piecrust.sources.base import MODE_PARSING
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17 from piecrust.uriutil import split_sub_uri
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18
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19
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20 logger = logging.getLogger(__name__)
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22
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23 class WsgiServer(object):
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24 def __init__(self, root_dir, **kwargs):
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25 self.server = Server(root_dir, **kwargs)
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26
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27 def __call__(self, environ, start_response):
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28 return self.server._run_request(environ, start_response)
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29
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30
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31 class ServeRecord(object):
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32 def __init__(self):
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33 self.entries = {}
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34
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35 def addEntry(self, entry):
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36 key = self._makeKey(entry.uri, entry.sub_num)
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37 self.entries[key] = entry
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38
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39 def getEntry(self, uri, sub_num):
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40 key = self._makeKey(uri, sub_num)
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41 return self.entries.get(key)
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42
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43 def _makeKey(self, uri, sub_num):
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44 return "%s:%s" % (uri, sub_num)
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45
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46
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47 class ServeRecordPageEntry(object):
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48 def __init__(self, uri, sub_num):
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49 self.uri = uri
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50 self.sub_num = sub_num
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51 self.used_source_names = set()
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52
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53
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54 class MultipleNotFound(HTTPException):
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55 code = 404
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56
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57 def __init__(self, description, nfes):
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58 super(MultipleNotFound, self).__init__(description)
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59 self._nfes = nfes
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60
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61 def get_description(self, environ=None):
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62 from werkzeug.utils import escape
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63 desc = '<p>' + self.description + '</p>'
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64 desc += '<p>'
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65 for nfe in self._nfes:
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66 desc += '<li>' + escape(nfe.description) + '</li>'
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67 desc += '</p>'
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68 return desc
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69
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70
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71 class Server(object):
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72 def __init__(self, root_dir,
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73 debug=False, sub_cache_dir=None, enable_debug_info=True,
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74 static_preview=True):
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75 self.root_dir = root_dir
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76 self.debug = debug
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77 self.sub_cache_dir = sub_cache_dir
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78 self.enable_debug_info = enable_debug_info
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79 self.static_preview = static_preview
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80 self._page_record = ServeRecord()
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81 self._out_dir = os.path.join(root_dir, CACHE_DIR, 'server')
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82 if sub_cache_dir:
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83 self._out_dir = os.path.join(sub_cache_dir, 'server')
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84
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85 def _run_request(self, environ, start_response):
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86 try:
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87 response = self._try_run_request(environ)
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88 return response(environ, start_response)
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89 except Exception as ex:
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90 if self.debug:
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91 raise
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92 return self._handle_error(ex, environ, start_response)
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93
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94 def _try_run_request(self, environ):
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95 request = Request(environ)
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96
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97 # We don't support anything else than GET requests since we're
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98 # previewing something that will be static later.
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99 if self.static_preview and request.method != 'GET':
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100 logger.error("Only GET requests are allowed, got %s" %
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101 request.method)
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102 raise MethodNotAllowed()
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103
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104 # Also handle requests to a pipeline-built asset right away.
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105 response = self._try_serve_asset(environ, request)
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106 if response is not None:
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107 return response
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108
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109 # Create the app for this request.
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110 app = PieCrust(root_dir=self.root_dir, debug=self.debug)
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111 if self.sub_cache_dir:
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112 app._useSubCacheDir(self.sub_cache_dir)
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113 app.config.set('site/root', '/')
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114 app.config.set('server/is_serving', True)
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115 if (app.config.get('site/enable_debug_info') and
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116 self.enable_debug_info and
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117 '!debug' in request.args):
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118 app.config.set('site/show_debug_info', True)
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119
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120 # We'll serve page assets directly from where they are.
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121 app.env.base_asset_url_format = '/_asset/%path%'
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122
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
123 # Let's see if it can be a page asset.
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124 response = self._try_serve_page_asset(app, environ, request)
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125 if response is not None:
552
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parents: 551
diff changeset
126 return response
374
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parents:
diff changeset
127
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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diff changeset
128 # Nope. Let's see if it's an actual page.
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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diff changeset
129 try:
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diff changeset
130 response = self._try_serve_page(app, environ, request)
552
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Ludovic Chabant <ludovic@chabant.com>
parents: 551
diff changeset
131 return response
374
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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132 except (RouteNotFoundError, SourceNotFoundError) as ex:
517
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diff changeset
133 raise NotFound() from ex
374
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diff changeset
134 except HTTPException:
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
135 raise
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
136 except Exception as ex:
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
137 if app.debug:
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diff changeset
138 logger.exception(ex)
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diff changeset
139 raise
523
b22e69ff54f4 serve: Don't show the same error message twice.
Ludovic Chabant <ludovic@chabant.com>
parents: 520
diff changeset
140 logger.error(str(ex))
b22e69ff54f4 serve: Don't show the same error message twice.
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parents: 520
diff changeset
141 msg = "There was an error trying to serve: %s" % request.path
374
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142 raise InternalServerError(msg) from ex
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diff changeset
143
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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144 def _try_serve_asset(self, environ, request):
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145 rel_req_path = request.path.lstrip('/').replace('/', os.sep)
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146 if request.path.startswith('/_cache/'):
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147 # Some stuff needs to be served directly from the cache directory,
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148 # like LESS CSS map files.
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149 full_path = os.path.join(self.root_dir, rel_req_path)
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150 else:
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151 full_path = os.path.join(self._out_dir, rel_req_path)
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152
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153 try:
553
cc6f3dbe3048 serve: Extract some of the server's functionality into WSGI middlewares.
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parents: 552
diff changeset
154 response = make_wrapped_file_response(environ, request, full_path)
374
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155 return response
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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156 except OSError:
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157 pass
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158 return None
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
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159
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160 def _try_serve_page_asset(self, app, environ, request):
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161 if not request.path.startswith('/_asset/'):
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162 return None
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parents:
diff changeset
163
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164 full_path = os.path.join(app.root_dir, request.path[len('/_asset/'):])
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165 if not os.path.isfile(full_path):
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166 return None
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167
553
cc6f3dbe3048 serve: Extract some of the server's functionality into WSGI middlewares.
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diff changeset
168 return make_wrapped_file_response(environ, request, full_path)
374
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parents:
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169
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170 def _try_serve_page(self, app, environ, request):
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171 # Try to find what matches the requested URL.
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172 req_path, page_num = split_sub_uri(app, request.path)
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173
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diff changeset
174 routes = find_routes(app.routes, req_path)
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parents:
diff changeset
175 if len(routes) == 0:
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176 raise RouteNotFoundError("Can't find route for: %s" % req_path)
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parents:
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177
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178 rendered_page = None
517
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parents: 515
diff changeset
179 not_found_errors = []
374
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180 for route, route_metadata in routes:
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181 try:
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182 logger.debug("Trying to render match from source '%s'." %
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parents:
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183 route.source_name)
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184 rendered_page = self._try_render_page(
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diff changeset
185 app, route, route_metadata, page_num, req_path)
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diff changeset
186 if rendered_page is not None:
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parents:
diff changeset
187 break
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parents:
diff changeset
188 except NotFound as nfe:
517
c7e8b4a5afe3 serve: Improve error reporting when pages are not found.
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parents: 515
diff changeset
189 not_found_errors.append(nfe)
374
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
190
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
191 # If we haven't found any good match, raise whatever exception we
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diff changeset
192 # first got. Otherwise, raise a generic exception.
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
193 if rendered_page is None:
517
c7e8b4a5afe3 serve: Improve error reporting when pages are not found.
Ludovic Chabant <ludovic@chabant.com>
parents: 515
diff changeset
194 msg = ("Can't find path for '%s', looked in sources: %s" %
c7e8b4a5afe3 serve: Improve error reporting when pages are not found.
Ludovic Chabant <ludovic@chabant.com>
parents: 515
diff changeset
195 (req_path,
c7e8b4a5afe3 serve: Improve error reporting when pages are not found.
Ludovic Chabant <ludovic@chabant.com>
parents: 515
diff changeset
196 ', '.join([r.source_name for r, _ in routes])))
c7e8b4a5afe3 serve: Improve error reporting when pages are not found.
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parents: 515
diff changeset
197 raise MultipleNotFound(msg, not_found_errors)
374
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
198
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
199 # Start doing stuff.
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
200 page = rendered_page.page
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
201 rp_content = rendered_page.content
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
202
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
203 # Profiling.
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
204 if app.config.get('site/show_debug_info'):
554
155c7e20414f serve: Fix timing information in the debug window.
Ludovic Chabant <ludovic@chabant.com>
parents: 553
diff changeset
205 now_time = time.perf_counter()
374
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
206 timing_info = (
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
207 '%8.1f ms' %
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
208 ((now_time - app.env.start_time) * 1000.0))
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
209 rp_content = rp_content.replace(
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
210 '__PIECRUST_TIMING_INFORMATION__', timing_info)
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
211
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
212 # Build the response.
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
213 response = Response()
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
214
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
215 etag = hashlib.md5(rp_content.encode('utf8')).hexdigest()
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
216 if not app.debug and etag in request.if_none_match:
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
217 response.status_code = 304
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parents:
diff changeset
218 return response
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
219
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
220 response.set_etag(etag)
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
221 response.content_md5 = etag
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
222
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
223 cache_control = response.cache_control
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
224 if app.debug:
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
225 cache_control.no_cache = True
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
226 cache_control.must_revalidate = True
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parents:
diff changeset
227 else:
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
228 cache_time = (page.config.get('cache_time') or
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
229 app.config.get('site/cache_time'))
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
230 if cache_time:
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
231 cache_control.public = True
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
232 cache_control.max_age = cache_time
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
233
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
234 content_type = page.config.get('content_type')
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
235 if content_type and '/' not in content_type:
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
236 mimetype = content_type_map.get(content_type, content_type)
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
237 else:
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
238 mimetype = content_type
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
239 if mimetype:
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
240 response.mimetype = mimetype
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
241
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diff changeset
242 if ('gzip' in request.accept_encodings and
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243 app.config.get('site/enable_gzip')):
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diff changeset
244 try:
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diff changeset
245 with io.BytesIO() as gzip_buffer:
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diff changeset
246 with gzip.open(gzip_buffer, mode='wt',
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247 encoding='utf8') as gzip_file:
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diff changeset
248 gzip_file.write(rp_content)
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diff changeset
249 rp_content = gzip_buffer.getvalue()
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diff changeset
250 response.content_encoding = 'gzip'
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parents:
diff changeset
251 except Exception:
523
b22e69ff54f4 serve: Don't show the same error message twice.
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parents: 520
diff changeset
252 logger.error("Error compressing response, "
b22e69ff54f4 serve: Don't show the same error message twice.
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parents: 520
diff changeset
253 "falling back to uncompressed.")
374
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diff changeset
254 response.set_data(rp_content)
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255
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diff changeset
256 return response
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diff changeset
257
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diff changeset
258 def _try_render_page(self, app, route, route_metadata, page_num, req_path):
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259 # Match the route to an actual factory.
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260 taxonomy_info = None
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diff changeset
261 source = app.getSource(route.source_name)
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diff changeset
262 if route.taxonomy_name is None:
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263 factory = source.findPageFactory(route_metadata, MODE_PARSING)
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parents:
diff changeset
264 if factory is None:
517
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diff changeset
265 raise NotFound("No path found for '%s' in source '%s'." %
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266 (req_path, source.name))
374
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diff changeset
267 else:
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diff changeset
268 taxonomy = app.getTaxonomy(route.taxonomy_name)
515
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diff changeset
269 tax_terms = route.getTaxonomyTerms(route_metadata)
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diff changeset
270 taxonomy_info = (taxonomy, tax_terms)
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diff changeset
271
411
e7b865f8f335 bake: Enable multiprocess baking.
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parents: 409
diff changeset
272 tax_page_ref = taxonomy.getPageRef(source)
374
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273 factory = tax_page_ref.getFactory()
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274
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diff changeset
275 # Build the page.
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276 page = factory.buildPage()
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277 # We force the rendering of the page because it could not have
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278 # changed, but include pages that did change.
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diff changeset
279 qp = QualifiedPage(page, route, route_metadata)
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280 render_ctx = PageRenderingContext(qp,
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281 page_num=page_num,
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diff changeset
282 force_render=True)
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parents:
diff changeset
283 if taxonomy_info is not None:
515
16e705c58cae internal: Improve handling of taxonomy term slugification.
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parents: 483
diff changeset
284 _, tax_terms = taxonomy_info
520
bab91fcef741 bake/serve: Improve support for unicode, add slugification options.
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parents: 517
diff changeset
285 render_ctx.setTaxonomyFilter(tax_terms, needs_slugifier=True)
374
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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diff changeset
286
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
287 # See if this page is known to use sources. If that's the case,
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parents:
diff changeset
288 # just don't use cached rendered segments for that page (but still
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parents:
diff changeset
289 # use them for pages that are included in it).
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diff changeset
290 uri = qp.getUri()
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diff changeset
291 entry = self._page_record.getEntry(uri, page_num)
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diff changeset
292 if (taxonomy_info is not None or entry is None or
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diff changeset
293 entry.used_source_names):
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294 cache_key = '%s:%s' % (uri, page_num)
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diff changeset
295 app.env.rendered_segments_repository.invalidate(cache_key)
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diff changeset
296
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297 # Render the page.
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298 rendered_page = render_page(render_ctx)
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parents:
diff changeset
299
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
300 # Check if this page is a taxonomy page that actually doesn't match
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parents:
diff changeset
301 # anything.
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parents:
diff changeset
302 if taxonomy_info is not None:
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parents:
diff changeset
303 paginator = rendered_page.data.get('pagination')
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parents:
diff changeset
304 if (paginator and paginator.is_loaded and
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parents:
diff changeset
305 len(paginator.items) == 0):
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
306 taxonomy = taxonomy_info[0]
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parents:
diff changeset
307 message = ("This URL matched a route for taxonomy '%s' but "
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
308 "no pages have been found to have it. This page "
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
309 "won't be generated by a bake." % taxonomy.name)
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
310 raise NotFound(message)
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
311
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
312 # Remember stuff for next time.
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
313 if entry is None:
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
314 entry = ServeRecordPageEntry(req_path, page_num)
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parents:
diff changeset
315 self._page_record.addEntry(entry)
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
316 for p, pinfo in render_ctx.render_passes.items():
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
317 entry.used_source_names |= pinfo.used_source_names
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
318
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
319 # Ok all good.
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
320 return rendered_page
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
321
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
322 def _handle_error(self, exception, environ, start_response):
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
323 code = 500
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
324 if isinstance(exception, HTTPException):
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
325 code = exception.code
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
326
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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diff changeset
327 path = 'error'
517
c7e8b4a5afe3 serve: Improve error reporting when pages are not found.
Ludovic Chabant <ludovic@chabant.com>
parents: 515
diff changeset
328 if isinstance(exception, (NotFound, MultipleNotFound)):
374
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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diff changeset
329 path += '404'
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
330
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
331 descriptions = self._get_exception_descriptions(exception)
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
332
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
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diff changeset
333 env = Environment(loader=ErrorMessageLoader())
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
334 template = env.get_template(path)
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
335 context = {'details': descriptions}
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
336 response = Response(template.render(context), mimetype='text/html')
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
337 response.status_code = code
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
338 return response(environ, start_response)
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
339
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
340 def _get_exception_descriptions(self, exception):
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
341 desc = []
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
342 while exception is not None:
517
c7e8b4a5afe3 serve: Improve error reporting when pages are not found.
Ludovic Chabant <ludovic@chabant.com>
parents: 515
diff changeset
343 if isinstance(exception, MultipleNotFound):
c7e8b4a5afe3 serve: Improve error reporting when pages are not found.
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parents: 515
diff changeset
344 desc += [e.description for e in exception._nfes]
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parents: 515
diff changeset
345 elif isinstance(exception, HTTPException):
374
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
346 desc.append(exception.description)
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parents:
diff changeset
347 else:
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
348 desc.append(str(exception))
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parents:
diff changeset
349
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
350 inner_ex = exception.__cause__
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
351 if inner_ex is None:
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parents:
diff changeset
352 inner_ex = exception.__context__
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parents:
diff changeset
353 exception = inner_ex
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
354 return desc
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
355
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
356
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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diff changeset
357 class RouteNotFoundError(Exception):
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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diff changeset
358 pass
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
359
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
360
fa3ee8a8ee2d serve: Split the server code in a couple modules inside a `serving` package.
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parents:
diff changeset
361 class SourceNotFoundError(Exception):
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parents:
diff changeset
362 pass
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363
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364
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365 def find_routes(routes, uri):
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366 res = []
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367 tax_res = []
374
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368 for route in routes:
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369 metadata = route.matchUri(uri)
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370 if metadata is not None:
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371 if route.is_taxonomy_route:
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372 tax_res.append((route, metadata))
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373 else:
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374 res.append((route, metadata))
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375 return res + tax_res
374
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376
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377
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378 class ErrorMessageLoader(FileSystemLoader):
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379 def __init__(self):
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380 base_dir = os.path.join(RESOURCES_DIR, 'messages')
374
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381 super(ErrorMessageLoader, self).__init__(base_dir)
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382
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383 def get_source(self, env, template):
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384 template += '.html'
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385 return super(ErrorMessageLoader, self).get_source(env, template)
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386
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387