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annotate piecrust/serving.py @ 192:4c0ab0b044fe

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cosmetic: Fix some PEP8 issues.
author Ludovic Chabant <ludovic@chabant.com>
date Sun, 11 Jan 2015 23:03:12 -0800
parents 430ee5b80962
children 76e459d48c43
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1 import re
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2 import gzip
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3 import time
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4 import os
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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 import io
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9 from werkzeug.exceptions import (NotFound, MethodNotAllowed,
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10 InternalServerError, HTTPException)
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11 from werkzeug.serving import run_simple
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12 from werkzeug.wrappers import Request, Response
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13 from werkzeug.wsgi import wrap_file
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14 from jinja2 import FileSystemLoader, Environment
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15 from piecrust.app import PieCrust
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16 from piecrust.data.filters import (PaginationFilter, HasFilterClause,
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17 IsFilterClause)
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18 from piecrust.environment import StandardEnvironment
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19 from piecrust.processing.base import ProcessorPipeline
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20 from piecrust.rendering import PageRenderingContext, render_page
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21 from piecrust.sources.base import PageFactory, MODE_PARSING
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24 logger = logging.getLogger(__name__)
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27 class ServingEnvironment(StandardEnvironment):
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28 pass
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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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53
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54 class Server(object):
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55 def __init__(self, root_dir, host='localhost', port='8080',
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56 debug=False, use_reloader=False, static_preview=True,
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57 synchronous_asset_pipeline=True):
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58 self.root_dir = root_dir
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59 self.host = host
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60 self.port = port
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61 self.debug = debug
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62 self.use_reloader = use_reloader
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63 self.static_preview = static_preview
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64 self.synchronous_asset_pipeline = synchronous_asset_pipeline
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65 self._out_dir = None
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66 self._skip_patterns = None
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67 self._force_patterns = None
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68 self._asset_record = None
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69 self._page_record = None
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70 self._mimetype_map = load_mimetype_map()
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71
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72 def run(self):
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73 # Bake all the assets so we know what we have, and so we can serve
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74 # them to the client. We need a temp app for this.
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75 app = PieCrust(root_dir=self.root_dir, debug=self.debug)
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76 mounts = app.assets_dirs
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77 self._out_dir = os.path.join(app.cache_dir, 'server')
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78 self._skip_patterns = app.config.get('baker/skip_patterns')
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79 self._force_patterns = app.config.get('baker/force_patterns')
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80 pipeline = ProcessorPipeline(
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81 app, mounts, self._out_dir,
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82 skip_patterns=self._skip_patterns,
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83 force_patterns=self._force_patterns)
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84 self._asset_record = pipeline.run()
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85 self._page_record = ServeRecord()
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86
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87 # Run the WSGI app.
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88 wsgi_wrapper = WsgiServer(self)
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89 run_simple(self.host, self.port, wsgi_wrapper,
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90 use_debugger=self.debug, use_reloader=self.use_reloader)
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91
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92 def _run_request(self, environ, start_response):
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93 try:
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94 return self._run_piecrust(environ, start_response)
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95 except Exception as ex:
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96 if self.debug:
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97 raise
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98 return self._handle_error(ex, environ, start_response)
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99
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100 def _run_piecrust(self, environ, start_response):
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101 request = Request(environ)
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102
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103 # We don't support anything else than GET requests since we're
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104 # previewing something that will be static later.
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105 if self.static_preview and request.method != 'GET':
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106 logger.error("Only GET requests are allowed, got %s" % request.method)
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107 raise MethodNotAllowed()
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108
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109 # Create the app for this request.
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110 rq_debug = ('!debug' in request.args)
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111 app = PieCrust(root_dir=self.root_dir, debug=(self.debug or rq_debug))
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112 app.config.set('site/root', '/')
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113 app.config.set('site/pretty_urls', True)
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114 app.config.set('server/is_serving', True)
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115
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116 # We'll serve page assets directly from where they are.
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117 app.env.base_asset_url_format = '/_asset/%path%'
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118
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119 # See if the requested URL is an asset.
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120 response = self._try_serve_asset(app, environ, request)
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121 if response is not None:
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122 return response(environ, start_response)
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123
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124 # It's not an asset we know of... let's see if it can be a page asset.
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125 response = self._try_serve_page_asset(app, environ, request)
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126 if response is not None:
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127 return response(environ, start_response)
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128
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129 # Nope. Let's see if it's an actual page.
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130 # We trap any exception that says "there's no such page" so we can
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131 # try another thing before bailing out. But we let any exception
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132 # that says "something's wrong" through.
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133 exc = None
3
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134 try:
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135 response = self._try_serve_page(app, environ, request)
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136 return response(environ, start_response)
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137 except (RouteNotFoundError, SourceNotFoundError) as ex:
133
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138 exc = NotFound(str(ex))
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139 except NotFound as ex:
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140 exc = ex
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141 except HTTPException:
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142 raise
3
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143 except Exception as ex:
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144 if app.debug:
128
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145 logger.exception(ex)
3
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diff changeset
146 raise
128
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diff changeset
147 msg = str(ex)
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148 logger.error(msg)
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149 raise InternalServerError(msg)
3
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150
133
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151 # Nothing worked so far... let's see if there's a new asset.
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152 response = self._try_serve_new_asset(app, environ, request)
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153 if response is not None:
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154 return response(environ, start_response)
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155
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156 # Nope. Raise the exception we had in store.
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157 raise exc
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158
3
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159 def _try_serve_asset(self, app, environ, request):
133
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160 logger.debug("Searching %d entries for asset with path: %s" %
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161 (len(self._asset_record.entries), request.path))
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162 rel_req_path = request.path.lstrip('/').replace('/', os.sep)
133
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163 entry = self._asset_record.findEntry(rel_req_path)
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164 if entry is None:
133
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165 # We don't know any asset that could have created this path.
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166 # It could be a new asset that the user just created, but we'll
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167 # check for that later.
190
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168 # What we can do however is see if there's anything that already
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169 # exists there, because it could have been created by a processor
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170 # that bypasses structured processing (like e.g. the compass
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171 # processor). In that case, just return that file, hoping it will
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172 # be up-to-date.
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173 full_path = os.path.join(self._out_dir, rel_req_path)
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174 try:
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175 response = self._make_wrapped_file_response(
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diff changeset
176 environ, full_path)
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177 logger.debug("Didn't find record entry, but found existing "
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178 "output file at: %s" % rel_req_path)
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179 return response
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180 except OSError:
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diff changeset
181 pass
133
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182 return None
3
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183
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184 # Yep, we know about this URL because we processed an asset that
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parents:
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185 # maps to it... make sure it's up to date by re-processing it
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186 # before serving.
133
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diff changeset
187 mounts = app.assets_dirs
39
2f717f961996 Better error reporting and cache validation.
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parents: 11
diff changeset
188 asset_in_path = entry.path
3
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189 asset_out_path = os.path.join(self._out_dir, rel_req_path)
110
7f00176a3b4d Prepare the server to support background asset pipelines.
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parents: 53
diff changeset
190
133
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diff changeset
191 if self.synchronous_asset_pipeline:
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diff changeset
192 logger.debug("Making sure '%s' is up-to-date." % asset_in_path)
110
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diff changeset
193 pipeline = ProcessorPipeline(
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diff changeset
194 app, mounts, self._out_dir,
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diff changeset
195 skip_patterns=self._skip_patterns,
133
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diff changeset
196 force_patterns=self._force_patterns,
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diff changeset
197 num_workers=1)
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diff changeset
198 r = pipeline.run(asset_in_path, delete=False, save_record=False,
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diff changeset
199 previous_record=self._asset_record)
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diff changeset
200 assert len(r.entries) == 1
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diff changeset
201 self._asset_record.replaceEntry(r.entries[0])
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diff changeset
202
190
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diff changeset
203 return self._make_wrapped_file_response(environ, asset_out_path)
3
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diff changeset
204
133
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diff changeset
205 def _try_serve_new_asset(self, app, environ, request):
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diff changeset
206 logger.debug("Searching for a new asset with path: %s" % request.path)
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parents: 130
diff changeset
207 mounts = app.assets_dirs
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diff changeset
208 pipeline = ProcessorPipeline(
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diff changeset
209 app, mounts, self._out_dir,
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parents: 130
diff changeset
210 skip_patterns=self._skip_patterns,
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parents: 130
diff changeset
211 force_patterns=self._force_patterns)
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diff changeset
212 r = pipeline.run(new_only=True, delete=False, save_record=False,
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parents: 130
diff changeset
213 previous_record=self._asset_record)
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parents: 130
diff changeset
214 for e in r.entries:
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diff changeset
215 self._asset_record.addEntry(e)
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parents: 130
diff changeset
216
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diff changeset
217 rel_req_path = request.path.lstrip('/').replace('/', os.sep)
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parents: 130
diff changeset
218 entry = self._asset_record.findEntry(rel_req_path)
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parents: 130
diff changeset
219 if entry is None:
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diff changeset
220 return None
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diff changeset
221
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diff changeset
222 asset_out_path = os.path.join(self._out_dir, rel_req_path)
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parents: 130
diff changeset
223 logger.debug("Found new asset: %s" % entry.path)
190
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parents: 176
diff changeset
224 return self._make_wrapped_file_response(environ, asset_out_path)
3
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225
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226 def _try_serve_page_asset(self, app, environ, request):
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227 if not request.path.startswith('/_asset/'):
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228 return None
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229
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230 full_path = os.path.join(app.root_dir, request.path[len('/_asset/'):])
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231 if not os.path.isfile(full_path):
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diff changeset
232 return None
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233
190
430ee5b80962 serve: Make the server find assets generated by external tools.
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parents: 176
diff changeset
234 return self._make_wrapped_file_response(environ, full_path)
3
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parents:
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235
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236 def _try_serve_page(self, app, environ, request):
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237 # Try to find what matches the requested URL.
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diff changeset
238 req_path = request.path
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diff changeset
239 page_num = 1
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diff changeset
240 pgn_suffix_re = app.config.get('__cache/pagination_suffix_re')
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parents:
diff changeset
241 pgn_suffix_m = re.search(pgn_suffix_re, request.path)
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parents:
diff changeset
242 if pgn_suffix_m:
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parents:
diff changeset
243 req_path = request.path[:pgn_suffix_m.start()]
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parents:
diff changeset
244 page_num = int(pgn_suffix_m.group('num'))
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parents:
diff changeset
245
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246 routes = find_routes(app.routes, req_path)
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parents:
diff changeset
247 if len(routes) == 0:
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248 raise RouteNotFoundError("Can't find route for: %s" % req_path)
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parents:
diff changeset
249
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diff changeset
250 taxonomy = None
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diff changeset
251 for route, route_metadata in routes:
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diff changeset
252 source = app.getSource(route.source_name)
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parents:
diff changeset
253 if route.taxonomy is None:
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617191dec18e Fixes for Windows, make `findPagePath` return a ref path.
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parents: 7
diff changeset
254 rel_path, fac_metadata = source.findPagePath(
3
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parents:
diff changeset
255 route_metadata, MODE_PARSING)
11
617191dec18e Fixes for Windows, make `findPagePath` return a ref path.
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parents: 7
diff changeset
256 if rel_path is not None:
3
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parents:
diff changeset
257 break
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parents:
diff changeset
258 else:
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parents:
diff changeset
259 taxonomy = app.getTaxonomy(route.taxonomy)
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parents:
diff changeset
260 term_value = route_metadata.get(taxonomy.term_name)
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diff changeset
261 if term_value is not None:
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diff changeset
262 tax_page_ref = taxonomy.getPageRef(source.name)
11
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diff changeset
263 rel_path = tax_page_ref.rel_path
3
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diff changeset
264 source = tax_page_ref.source
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diff changeset
265 fac_metadata = {taxonomy.term_name: term_value}
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diff changeset
266 break
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267 else:
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268 raise SourceNotFoundError("Can't find path for: %s "
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diff changeset
269 "(looked in: %s)" %
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diff changeset
270 (req_path, [r.source_name for r, _ in routes]))
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271
113
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diff changeset
272 # Build the page.
11
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diff changeset
273 fac = PageFactory(source, rel_path, fac_metadata)
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diff changeset
274 page = fac.buildPage()
174
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diff changeset
275 # We force the rendering of the page because it could not have
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diff changeset
276 # changed, but include pages that did change.
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diff changeset
277 render_ctx = PageRenderingContext(page, req_path, page_num,
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diff changeset
278 force_render=True)
3
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279 if taxonomy is not None:
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280 flt = PaginationFilter()
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281 if taxonomy.is_multiple:
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282 flt.addClause(HasFilterClause(taxonomy.name, term_value))
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283 else:
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284 flt.addClause(IsFilterClause(taxonomy.name, term_value))
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285 render_ctx.pagination_filter = flt
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286 render_ctx.custom_data = {
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287 taxonomy.term_name: term_value}
113
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diff changeset
288
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diff changeset
289 # See if this page is known to use sources. If that's the case,
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diff changeset
290 # just don't use cached rendered segments for that page (but still
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diff changeset
291 # use them for pages that are included in it).
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292 entry = self._page_record.getEntry(req_path, page_num)
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293 if (taxonomy is not None or entry is None or
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diff changeset
294 entry.used_source_names):
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diff changeset
295 cache_key = '%s:%s' % (req_path, page_num)
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diff changeset
296 app.env.rendered_segments_repository.invalidate(cache_key)
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diff changeset
297
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diff changeset
298 # Render the page.
3
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299 rendered_page = render_page(render_ctx)
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300 rp_content = rendered_page.content
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301
128
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parents: 113
diff changeset
302 if taxonomy is not None:
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diff changeset
303 paginator = rendered_page.data.get('pagination')
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diff changeset
304 if (paginator and paginator.is_loaded and
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parents: 113
diff changeset
305 len(paginator.items) == 0):
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parents: 113
diff changeset
306 message = ("This URL matched a route for taxonomy '%s' but "
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parents: 113
diff changeset
307 "no pages have been found to have it. This page "
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parents: 113
diff changeset
308 "won't be generated by a bake." % taxonomy.name)
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parents: 113
diff changeset
309 raise NotFound(message)
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parents: 113
diff changeset
310
113
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diff changeset
311 if entry is None:
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diff changeset
312 entry = ServeRecordPageEntry(req_path, page_num)
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diff changeset
313 self._page_record.addEntry(entry)
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diff changeset
314 entry.used_source_names = set(render_ctx.used_source_names)
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parents: 111
diff changeset
315
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diff changeset
316 # Profiling.
7
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diff changeset
317 if app.debug:
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diff changeset
318 now_time = time.clock()
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diff changeset
319 timing_info = ('%8.1f ms' %
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diff changeset
320 ((now_time - app.env.start_time) * 1000.0))
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diff changeset
321 rp_content = rp_content.replace('__PIECRUST_TIMING_INFORMATION__',
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parents: 5
diff changeset
322 timing_info)
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parents: 5
diff changeset
323
113
de257cc40ce1 Re-enable proper caching of rendered segments in server.
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diff changeset
324 # Build the response.
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
325 response = Response()
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
326
7
343d08ef5668 More PieCrust 3 fixes, and a couple of miscellaneous bug fixes.
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diff changeset
327 etag = hashlib.md5(rp_content.encode('utf8')).hexdigest()
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
328 if not app.debug and etag in request.if_none_match:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
329 response.status_code = 304
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diff changeset
330 return response
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diff changeset
331
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
332 response.set_etag(etag)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
333 response.content_md5 = etag
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
334
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
335 cache_control = response.cache_control
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
336 if app.debug:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
337 cache_control.no_cache = True
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
338 cache_control.must_revalidate = True
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
339 else:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
340 cache_time = (page.config.get('cache_time') or
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
341 app.config.get('site/cache_time'))
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
342 if cache_time:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
343 cache_control.public = True
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
344 cache_control.max_age = cache_time
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parents:
diff changeset
345
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
346 content_type = page.config.get('content_type')
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
347 if content_type and '/' not in content_type:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
348 mimetype = content_type_map.get(content_type, content_type)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
349 else:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
350 mimetype = content_type
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parents:
diff changeset
351 if mimetype:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
352 response.mimetype = mimetype
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
353
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
354 if ('gzip' in request.accept_encodings and
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
355 app.config.get('site/enable_gzip')):
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parents:
diff changeset
356 try:
7
343d08ef5668 More PieCrust 3 fixes, and a couple of miscellaneous bug fixes.
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parents: 5
diff changeset
357 with io.BytesIO() as gzip_buffer:
343d08ef5668 More PieCrust 3 fixes, and a couple of miscellaneous bug fixes.
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parents: 5
diff changeset
358 with gzip.open(gzip_buffer, mode='wt',
343d08ef5668 More PieCrust 3 fixes, and a couple of miscellaneous bug fixes.
Ludovic Chabant <ludovic@chabant.com>
parents: 5
diff changeset
359 encoding='utf8') as gzip_file:
343d08ef5668 More PieCrust 3 fixes, and a couple of miscellaneous bug fixes.
Ludovic Chabant <ludovic@chabant.com>
parents: 5
diff changeset
360 gzip_file.write(rp_content)
343d08ef5668 More PieCrust 3 fixes, and a couple of miscellaneous bug fixes.
Ludovic Chabant <ludovic@chabant.com>
parents: 5
diff changeset
361 rp_content = gzip_buffer.getvalue()
343d08ef5668 More PieCrust 3 fixes, and a couple of miscellaneous bug fixes.
Ludovic Chabant <ludovic@chabant.com>
parents: 5
diff changeset
362 response.content_encoding = 'gzip'
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
363 except Exception:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
364 logger.exception("Error compressing response, "
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
365 "falling back to uncompressed.")
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
366 response.set_data(rp_content)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
367
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
368 return response
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
369
190
430ee5b80962 serve: Make the server find assets generated by external tools.
Ludovic Chabant <ludovic@chabant.com>
parents: 176
diff changeset
370 def _make_wrapped_file_response(self, environ, path):
430ee5b80962 serve: Make the server find assets generated by external tools.
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parents: 176
diff changeset
371 logger.debug("Serving %s" % path)
430ee5b80962 serve: Make the server find assets generated by external tools.
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parents: 176
diff changeset
372 wrapper = wrap_file(environ, open(path, 'rb'))
430ee5b80962 serve: Make the server find assets generated by external tools.
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parents: 176
diff changeset
373 response = Response(wrapper)
430ee5b80962 serve: Make the server find assets generated by external tools.
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parents: 176
diff changeset
374 _, ext = os.path.splitext(path)
430ee5b80962 serve: Make the server find assets generated by external tools.
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parents: 176
diff changeset
375 response.mimetype = self._mimetype_map.get(
430ee5b80962 serve: Make the server find assets generated by external tools.
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parents: 176
diff changeset
376 ext.lstrip('.'), 'text/plain')
430ee5b80962 serve: Make the server find assets generated by external tools.
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parents: 176
diff changeset
377 return response
430ee5b80962 serve: Make the server find assets generated by external tools.
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parents: 176
diff changeset
378
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
379 def _handle_error(self, exception, environ, start_response):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
380 path = 'error'
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parents:
diff changeset
381 if isinstance(exception, NotFound):
128
28444014ce7d Fix error reporting and counting of lines.
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parents: 113
diff changeset
382 path += '404'
28444014ce7d Fix error reporting and counting of lines.
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parents: 113
diff changeset
383 description = str(exception)
28444014ce7d Fix error reporting and counting of lines.
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parents: 113
diff changeset
384 if isinstance(exception, HTTPException):
28444014ce7d Fix error reporting and counting of lines.
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parents: 113
diff changeset
385 description = exception.description
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
386 env = Environment(loader=ErrorMessageLoader())
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
387 template = env.get_template(path)
128
28444014ce7d Fix error reporting and counting of lines.
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parents: 113
diff changeset
388 context = {'details': description}
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
389 response = Response(template.render(context), mimetype='text/html')
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
390 return response(environ, start_response)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
391
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
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392
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393 class WsgiServer(object):
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394 def __init__(self, server):
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395 self.server = server
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396
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397 def __call__(self, environ, start_response):
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398 return self.server._run_request(environ, start_response)
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399
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400
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401 class RouteNotFoundError(Exception):
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402 pass
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403
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404
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405 class SourceNotFoundError(Exception):
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406 pass
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407
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408
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409 content_type_map = {
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410 'html': 'text/html',
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411 'xml': 'text/xml',
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412 'txt': 'text/plain',
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413 'text': 'text/plain',
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414 'css': 'text/css',
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415 'xhtml': 'application/xhtml+xml',
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416 'atom': 'application/atom+xml', # or 'text/xml'?
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417 'rss': 'application/rss+xml', # or 'text/xml'?
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418 'json': 'application/json'}
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419
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420
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421 def find_routes(routes, uri):
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422 uri = uri.lstrip('/')
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423 res = []
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424 for route in routes:
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425 metadata = route.matchUri(uri)
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426 if metadata:
3
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427 res.append((route, metadata))
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428 return res
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429
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430
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431 class ErrorMessageLoader(FileSystemLoader):
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432 def __init__(self):
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433 base_dir = os.path.join(os.path.dirname(__file__), 'resources',
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434 'messages')
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435 super(ErrorMessageLoader, self).__init__(base_dir)
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436
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437 def get_source(self, env, template):
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438 template += '.html'
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439 return super(ErrorMessageLoader, self).get_source(env, template)
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440
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441
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442 def load_mimetype_map():
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443 mimetype_map = {}
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444 sep_re = re.compile(r'\s+')
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445 path = os.path.join(os.path.dirname(__file__), 'mime.types')
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446 with open(path, 'r') as f:
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447 for line in f:
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448 tokens = sep_re.split(line)
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449 if len(tokens) > 1:
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450 for t in tokens[1:]:
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451 mimetype_map[t] = tokens[0]
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452 return mimetype_map
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453