annotate piecrust/serving.py @ 219:d7a548ebcd58

serve: Add server sent events for showing pipeline errors in the debug window. The server can now run an endpoint that streams pipeline status, including errors or "fixed" statuses. As a result, I had to investigate using event-loop based server alternatives, before I figured out the correct flag to set in Werkzeug. Support for Gunicorn is therefore now possible, although disabled by default. I will come in handy though when proper support for CMS-mode is enabled.
author Ludovic Chabant <ludovic@chabant.com>
date Mon, 02 Feb 2015 08:34:44 -0800
parents 09e350db7f8f
children 7decf00eee47
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1 import io
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2 import os
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3 import re
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4 import json
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5 import gzip
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6 import time
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7 import queue
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8 import os.path
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9 import hashlib
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10 import logging
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11 import threading
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12 from werkzeug.exceptions import (
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13 NotFound, MethodNotAllowed, InternalServerError, HTTPException)
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14 from werkzeug.wrappers import Request, Response
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15 from werkzeug.wsgi import ClosingIterator, wrap_file
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16 from jinja2 import FileSystemLoader, Environment
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17 from piecrust.app import PieCrust
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18 from piecrust.data.filters import (
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19 PaginationFilter, HasFilterClause, IsFilterClause)
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20 from piecrust.environment import StandardEnvironment
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21 from piecrust.processing.base import ProcessorPipeline
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22 from piecrust.rendering import PageRenderingContext, render_page
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23 from piecrust.sources.base import PageFactory, MODE_PARSING
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26 logger = logging.getLogger(__name__)
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29 class ServingEnvironment(StandardEnvironment):
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30 pass
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33 class ServeRecord(object):
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34 def __init__(self):
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35 self.entries = {}
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36
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37 def addEntry(self, entry):
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38 key = self._makeKey(entry.uri, entry.sub_num)
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39 self.entries[key] = entry
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40
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41 def getEntry(self, uri, sub_num):
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42 key = self._makeKey(uri, sub_num)
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43 return self.entries.get(key)
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44
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45 def _makeKey(self, uri, sub_num):
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46 return "%s:%s" % (uri, sub_num)
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48
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49 class ServeRecordPageEntry(object):
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50 def __init__(self, uri, sub_num):
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51 self.uri = uri
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52 self.sub_num = sub_num
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53 self.used_source_names = set()
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54
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55
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56 class WsgiServerWrapper(object):
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57 def __init__(self, server):
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58 self.server = server
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59
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60 def __call__(self, environ, start_response):
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61 return self.server._run_request(environ, start_response)
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62
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63
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64 class Server(object):
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65 def __init__(self, root_dir,
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66 debug=False, use_reloader=False, static_preview=True):
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67 self.root_dir = root_dir
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68 self.debug = debug
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69 self.use_reloader = use_reloader
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70 self.static_preview = static_preview
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71 self._out_dir = None
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72 self._page_record = None
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73 self._proc_loop = None
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74 self._mimetype_map = load_mimetype_map()
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75
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76 def getWsgiApp(self):
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77 # Bake all the assets so we know what we have, and so we can serve
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78 # them to the client. We need a temp app for this.
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79 app = PieCrust(root_dir=self.root_dir, debug=self.debug)
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80 self._out_dir = os.path.join(app.cache_dir, 'server')
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81 self._page_record = ServeRecord()
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82
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83 if (not self.use_reloader or
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84 os.environ.get('WERKZEUG_RUN_MAIN') == 'true'):
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85 # We don't want to run the processing loop here if this isn't
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86 # the actual process that does the serving. In most cases it is,
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87 # but if we're using Werkzeug's reloader, then it won't be the
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88 # first time we get there... it will only be the correct process
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89 # the second time, when the reloading process is spawned, with the
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90 # `WERKZEUG_RUN_MAIN` variable set.
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91 pipeline = ProcessorPipeline(app, self._out_dir)
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92 self._proc_loop = ProcessingLoop(pipeline)
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93 self._proc_loop.start()
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94
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95 # Run the WSGI app.
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96 wsgi_wrapper = WsgiServerWrapper(self)
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97 return wsgi_wrapper
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98
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99 def _run_request(self, environ, start_response):
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100 try:
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101 return self._try_run_request(environ, start_response)
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102 except Exception as ex:
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103 if self.debug:
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104 raise
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105 return self._handle_error(ex, environ, start_response)
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106
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107 def _try_run_request(self, environ, start_response):
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108 request = Request(environ)
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109
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110 # We don't support anything else than GET requests since we're
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111 # previewing something that will be static later.
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112 if self.static_preview and request.method != 'GET':
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113 logger.error("Only GET requests are allowed, got %s" %
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114 request.method)
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115 raise MethodNotAllowed()
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116
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117 # Handle special requests right away.
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118 response = self._try_special_request(environ, request)
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119 if response is not None:
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120 return response(environ, start_response)
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121
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122 # Also handle requests to a pipeline-built asset right away.
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123 response = self._try_serve_asset(environ, request)
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124 if response is not None:
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125 return response(environ, start_response)
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126
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127 # Create the app for this request.
141
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parents: 136
diff changeset
128 rq_debug = ('!debug' in request.args)
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diff changeset
129 app = PieCrust(root_dir=self.root_dir, debug=(self.debug or rq_debug))
53
73956224eb67 Setup the server better.
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diff changeset
130 app.config.set('site/root', '/')
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diff changeset
131 app.config.set('site/pretty_urls', True)
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diff changeset
132 app.config.set('server/is_serving', True)
3
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133
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diff changeset
134 # We'll serve page assets directly from where they are.
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diff changeset
135 app.env.base_asset_url_format = '/_asset/%path%'
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diff changeset
136
209
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diff changeset
137 # Let's see if it can be a page asset.
3
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138 response = self._try_serve_page_asset(app, environ, request)
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diff changeset
139 if response is not None:
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diff changeset
140 return response(environ, start_response)
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diff changeset
141
133
9e4c2e68a129 Optimize server for files that already exist.
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parents: 130
diff changeset
142 # Nope. Let's see if it's an actual page.
3
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diff changeset
143 try:
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144 response = self._try_serve_page(app, environ, request)
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diff changeset
145 return response(environ, start_response)
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diff changeset
146 except (RouteNotFoundError, SourceNotFoundError) as ex:
209
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diff changeset
147 raise NotFound(str(ex))
133
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parents: 130
diff changeset
148 except HTTPException:
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parents: 130
diff changeset
149 raise
3
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diff changeset
150 except Exception as ex:
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151 if app.debug:
128
28444014ce7d Fix error reporting and counting of lines.
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diff changeset
152 logger.exception(ex)
3
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diff changeset
153 raise
128
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diff changeset
154 msg = str(ex)
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diff changeset
155 logger.error(msg)
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diff changeset
156 raise InternalServerError(msg)
3
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157
219
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diff changeset
158 def _try_special_request(self, environ, request):
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159 static_mount = '/__piecrust_static/'
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parents: 214
diff changeset
160 if request.path.startswith(static_mount):
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parents: 214
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161 rel_req_path = request.path[len(static_mount):]
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162 mount = os.path.join(
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diff changeset
163 os.path.dirname(__file__),
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164 'resources', 'server')
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165 full_path = os.path.join(mount, rel_req_path)
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diff changeset
166 try:
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diff changeset
167 response = self._make_wrapped_file_response(
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parents: 214
diff changeset
168 environ, full_path)
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diff changeset
169 return response
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parents: 214
diff changeset
170 except OSError:
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diff changeset
171 pass
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parents: 214
diff changeset
172
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diff changeset
173 debug_mount = '/__piecrust_debug/'
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diff changeset
174 if request.path.startswith(debug_mount):
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parents: 214
diff changeset
175 rel_req_path = request.path[len(debug_mount):]
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parents: 214
diff changeset
176 if rel_req_path == 'pipeline_status':
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parents: 214
diff changeset
177 provider = PipelineStatusServerSideEventProducer(
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parents: 214
diff changeset
178 self._proc_loop.status_queue)
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diff changeset
179 it = ClosingIterator(provider.run(), [provider.close])
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diff changeset
180 response = Response(it)
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diff changeset
181 response.headers['Cache-Control'] = 'no-cache'
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parents: 214
diff changeset
182 if 'text/event-stream' in request.accept_mimetypes:
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parents: 214
diff changeset
183 response.mimetype = 'text/event-stream'
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parents: 214
diff changeset
184 response.direct_passthrough = True
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parents: 214
diff changeset
185 response.implicit_sequence_conversion = False
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parents: 214
diff changeset
186 return response
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parents: 214
diff changeset
187
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diff changeset
188 return None
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parents: 214
diff changeset
189
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parents: 214
diff changeset
190 def _try_serve_asset(self, environ, request):
11
617191dec18e Fixes for Windows, make `findPagePath` return a ref path.
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parents: 7
diff changeset
191 rel_req_path = request.path.lstrip('/').replace('/', os.sep)
209
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
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parents: 205
diff changeset
192 full_path = os.path.join(self._out_dir, rel_req_path)
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parents: 205
diff changeset
193 try:
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diff changeset
194 response = self._make_wrapped_file_response(
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parents: 205
diff changeset
195 environ, full_path)
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diff changeset
196 return response
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parents: 205
diff changeset
197 except OSError:
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diff changeset
198 pass
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diff changeset
199 return None
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
200
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diff changeset
201 def _try_serve_page_asset(self, app, environ, request):
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diff changeset
202 if not request.path.startswith('/_asset/'):
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diff changeset
203 return None
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diff changeset
204
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diff changeset
205 full_path = os.path.join(app.root_dir, request.path[len('/_asset/'):])
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parents:
diff changeset
206 if not os.path.isfile(full_path):
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diff changeset
207 return None
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parents:
diff changeset
208
190
430ee5b80962 serve: Make the server find assets generated by external tools.
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parents: 176
diff changeset
209 return self._make_wrapped_file_response(environ, full_path)
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
210
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diff changeset
211 def _try_serve_page(self, app, environ, request):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
212 # Try to find what matches the requested URL.
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diff changeset
213 req_path = request.path
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
214 page_num = 1
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diff changeset
215 pgn_suffix_re = app.config.get('__cache/pagination_suffix_re')
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
216 pgn_suffix_m = re.search(pgn_suffix_re, request.path)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
217 if pgn_suffix_m:
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diff changeset
218 req_path = request.path[:pgn_suffix_m.start()]
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parents:
diff changeset
219 page_num = int(pgn_suffix_m.group('num'))
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parents:
diff changeset
220
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diff changeset
221 routes = find_routes(app.routes, req_path)
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parents:
diff changeset
222 if len(routes) == 0:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
223 raise RouteNotFoundError("Can't find route for: %s" % req_path)
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parents:
diff changeset
224
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
225 taxonomy = None
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diff changeset
226 for route, route_metadata in routes:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
227 source = app.getSource(route.source_name)
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diff changeset
228 if route.taxonomy is None:
11
617191dec18e Fixes for Windows, make `findPagePath` return a ref path.
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parents: 7
diff changeset
229 rel_path, fac_metadata = source.findPagePath(
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
230 route_metadata, MODE_PARSING)
11
617191dec18e Fixes for Windows, make `findPagePath` return a ref path.
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diff changeset
231 if rel_path is not None:
3
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diff changeset
232 break
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diff changeset
233 else:
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diff changeset
234 taxonomy = app.getTaxonomy(route.taxonomy)
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diff changeset
235 term_value = route_metadata.get(taxonomy.term_name)
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diff changeset
236 if term_value is not None:
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diff changeset
237 tax_page_ref = taxonomy.getPageRef(source.name)
11
617191dec18e Fixes for Windows, make `findPagePath` return a ref path.
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parents: 7
diff changeset
238 rel_path = tax_page_ref.rel_path
3
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parents:
diff changeset
239 source = tax_page_ref.source
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parents:
diff changeset
240 fac_metadata = {taxonomy.term_name: term_value}
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parents:
diff changeset
241 break
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parents:
diff changeset
242 else:
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diff changeset
243 raise SourceNotFoundError("Can't find path for: %s "
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parents:
diff changeset
244 "(looked in: %s)" %
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diff changeset
245 (req_path, [r.source_name for r, _ in routes]))
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parents:
diff changeset
246
113
de257cc40ce1 Re-enable proper caching of rendered segments in server.
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parents: 111
diff changeset
247 # Build the page.
11
617191dec18e Fixes for Windows, make `findPagePath` return a ref path.
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parents: 7
diff changeset
248 fac = PageFactory(source, rel_path, fac_metadata)
617191dec18e Fixes for Windows, make `findPagePath` return a ref path.
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parents: 7
diff changeset
249 page = fac.buildPage()
174
e9a3d405e18f serve: Always force render the page being previewed.
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parents: 173
diff changeset
250 # We force the rendering of the page because it could not have
e9a3d405e18f serve: Always force render the page being previewed.
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parents: 173
diff changeset
251 # changed, but include pages that did change.
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parents: 173
diff changeset
252 render_ctx = PageRenderingContext(page, req_path, page_num,
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parents: 173
diff changeset
253 force_render=True)
3
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parents:
diff changeset
254 if taxonomy is not None:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
255 flt = PaginationFilter()
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parents:
diff changeset
256 if taxonomy.is_multiple:
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diff changeset
257 flt.addClause(HasFilterClause(taxonomy.name, term_value))
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diff changeset
258 else:
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259 flt.addClause(IsFilterClause(taxonomy.name, term_value))
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diff changeset
260 render_ctx.pagination_filter = flt
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diff changeset
261 render_ctx.custom_data = {
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diff changeset
262 taxonomy.term_name: term_value}
113
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diff changeset
263
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diff changeset
264 # See if this page is known to use sources. If that's the case,
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diff changeset
265 # just don't use cached rendered segments for that page (but still
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diff changeset
266 # use them for pages that are included in it).
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diff changeset
267 entry = self._page_record.getEntry(req_path, page_num)
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diff changeset
268 if (taxonomy is not None or entry is None or
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diff changeset
269 entry.used_source_names):
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diff changeset
270 cache_key = '%s:%s' % (req_path, page_num)
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diff changeset
271 app.env.rendered_segments_repository.invalidate(cache_key)
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diff changeset
272
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diff changeset
273 # Render the page.
3
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274 rendered_page = render_page(render_ctx)
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275 rp_content = rendered_page.content
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276
128
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parents: 113
diff changeset
277 if taxonomy is not None:
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diff changeset
278 paginator = rendered_page.data.get('pagination')
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parents: 113
diff changeset
279 if (paginator and paginator.is_loaded and
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parents: 113
diff changeset
280 len(paginator.items) == 0):
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diff changeset
281 message = ("This URL matched a route for taxonomy '%s' but "
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parents: 113
diff changeset
282 "no pages have been found to have it. This page "
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parents: 113
diff changeset
283 "won't be generated by a bake." % taxonomy.name)
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parents: 113
diff changeset
284 raise NotFound(message)
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parents: 113
diff changeset
285
113
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diff changeset
286 if entry is None:
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diff changeset
287 entry = ServeRecordPageEntry(req_path, page_num)
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diff changeset
288 self._page_record.addEntry(entry)
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diff changeset
289 entry.used_source_names = set(render_ctx.used_source_names)
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diff changeset
290
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diff changeset
291 # Profiling.
7
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diff changeset
292 if app.debug:
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293 now_time = time.clock()
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diff changeset
294 timing_info = ('%8.1f ms' %
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diff changeset
295 ((now_time - app.env.start_time) * 1000.0))
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diff changeset
296 rp_content = rp_content.replace('__PIECRUST_TIMING_INFORMATION__',
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parents: 5
diff changeset
297 timing_info)
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parents: 5
diff changeset
298
113
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diff changeset
299 # Build the response.
3
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diff changeset
300 response = Response()
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diff changeset
301
7
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diff changeset
302 etag = hashlib.md5(rp_content.encode('utf8')).hexdigest()
3
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parents:
diff changeset
303 if not app.debug and etag in request.if_none_match:
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diff changeset
304 response.status_code = 304
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parents:
diff changeset
305 return response
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diff changeset
306
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
307 response.set_etag(etag)
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parents:
diff changeset
308 response.content_md5 = etag
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parents:
diff changeset
309
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
310 cache_control = response.cache_control
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parents:
diff changeset
311 if app.debug:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
312 cache_control.no_cache = True
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diff changeset
313 cache_control.must_revalidate = True
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parents:
diff changeset
314 else:
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diff changeset
315 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
316 app.config.get('site/cache_time'))
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parents:
diff changeset
317 if cache_time:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
318 cache_control.public = True
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diff changeset
319 cache_control.max_age = cache_time
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parents:
diff changeset
320
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
321 content_type = page.config.get('content_type')
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
322 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
323 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
324 else:
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diff changeset
325 mimetype = content_type
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parents:
diff changeset
326 if mimetype:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
327 response.mimetype = mimetype
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parents:
diff changeset
328
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
329 if ('gzip' in request.accept_encodings and
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
330 app.config.get('site/enable_gzip')):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
331 try:
7
343d08ef5668 More PieCrust 3 fixes, and a couple of miscellaneous bug fixes.
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parents: 5
diff changeset
332 with io.BytesIO() as gzip_buffer:
343d08ef5668 More PieCrust 3 fixes, and a couple of miscellaneous bug fixes.
Ludovic Chabant <ludovic@chabant.com>
parents: 5
diff changeset
333 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
334 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
335 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
336 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
337 response.content_encoding = 'gzip'
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
338 except Exception:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
339 logger.exception("Error compressing response, "
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
340 "falling back to uncompressed.")
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
341 response.set_data(rp_content)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
342
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
343 return response
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
344
190
430ee5b80962 serve: Make the server find assets generated by external tools.
Ludovic Chabant <ludovic@chabant.com>
parents: 176
diff changeset
345 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
346 logger.debug("Serving %s" % path)
430ee5b80962 serve: Make the server find assets generated by external tools.
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parents: 176
diff changeset
347 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
348 response = Response(wrapper)
430ee5b80962 serve: Make the server find assets generated by external tools.
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parents: 176
diff changeset
349 _, ext = os.path.splitext(path)
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parents: 176
diff changeset
350 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
351 ext.lstrip('.'), 'text/plain')
430ee5b80962 serve: Make the server find assets generated by external tools.
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parents: 176
diff changeset
352 return response
430ee5b80962 serve: Make the server find assets generated by external tools.
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parents: 176
diff changeset
353
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
354 def _handle_error(self, exception, environ, start_response):
200
76e459d48c43 serve: Correctly pass on the HTTP status code when an error occurs.
Ludovic Chabant <ludovic@chabant.com>
parents: 190
diff changeset
355 code = 500
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
356 path = 'error'
128
28444014ce7d Fix error reporting and counting of lines.
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parents: 113
diff changeset
357 description = str(exception)
28444014ce7d Fix error reporting and counting of lines.
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parents: 113
diff changeset
358 if isinstance(exception, HTTPException):
200
76e459d48c43 serve: Correctly pass on the HTTP status code when an error occurs.
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parents: 190
diff changeset
359 code = exception.code
128
28444014ce7d Fix error reporting and counting of lines.
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parents: 113
diff changeset
360 description = exception.description
200
76e459d48c43 serve: Correctly pass on the HTTP status code when an error occurs.
Ludovic Chabant <ludovic@chabant.com>
parents: 190
diff changeset
361 if isinstance(exception, NotFound):
76e459d48c43 serve: Correctly pass on the HTTP status code when an error occurs.
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parents: 190
diff changeset
362 path += '404'
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
363 env = Environment(loader=ErrorMessageLoader())
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
364 template = env.get_template(path)
128
28444014ce7d Fix error reporting and counting of lines.
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parents: 113
diff changeset
365 context = {'details': description}
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
366 response = Response(template.render(context), mimetype='text/html')
200
76e459d48c43 serve: Correctly pass on the HTTP status code when an error occurs.
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parents: 190
diff changeset
367 response.status_code = code
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
368 return response(environ, start_response)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
369
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
370
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
371 class RouteNotFoundError(Exception):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
372 pass
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
373
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
374
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
375 class SourceNotFoundError(Exception):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
376 pass
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
377
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
378
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
379 content_type_map = {
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
380 'html': 'text/html',
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
381 'xml': 'text/xml',
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
382 'txt': 'text/plain',
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
383 'text': 'text/plain',
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
384 'css': 'text/css',
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
385 'xhtml': 'application/xhtml+xml',
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
386 'atom': 'application/atom+xml', # or 'text/xml'?
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
387 'rss': 'application/rss+xml', # or 'text/xml'?
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
388 'json': 'application/json'}
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
389
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
390
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parents:
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391 def find_routes(routes, uri):
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392 uri = uri.lstrip('/')
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393 res = []
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394 for route in routes:
176
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diff changeset
395 metadata = route.matchUri(uri)
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parents: 174
diff changeset
396 if metadata:
3
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parents:
diff changeset
397 res.append((route, metadata))
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parents:
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398 return res
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
399
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
400
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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401 class ErrorMessageLoader(FileSystemLoader):
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parents:
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402 def __init__(self):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
403 base_dir = os.path.join(os.path.dirname(__file__), 'resources',
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
404 'messages')
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
405 super(ErrorMessageLoader, self).__init__(base_dir)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
406
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
407 def get_source(self, env, template):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
408 template += '.html'
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
409 return super(ErrorMessageLoader, self).get_source(env, template)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
410
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
411
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
412 def load_mimetype_map():
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Ludovic Chabant <ludovic@chabant.com>
parents:
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413 mimetype_map = {}
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parents:
diff changeset
414 sep_re = re.compile(r'\s+')
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parents:
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415 path = os.path.join(os.path.dirname(__file__), 'mime.types')
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
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416 with open(path, 'r') as f:
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parents:
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417 for line in f:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
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418 tokens = sep_re.split(line)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
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419 if len(tokens) > 1:
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parents:
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420 for t in tokens[1:]:
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parents:
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421 mimetype_map[t] = tokens[0]
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parents:
diff changeset
422 return mimetype_map
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
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423
209
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424
219
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diff changeset
425 class PipelineStatusServerSideEventProducer(object):
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426 def __init__(self, status_queue):
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diff changeset
427 self.status_queue = status_queue
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428 self.interval = 2
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diff changeset
429 self.timeout = 60*10
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diff changeset
430 self._start_time = 0
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parents: 214
diff changeset
431
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432 def run(self):
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diff changeset
433 logger.debug("Starting pipeline status SSE.")
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diff changeset
434 self._start_time = time.time()
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diff changeset
435
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diff changeset
436 outstr = 'event: ping\ndata: started\n\n'
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parents: 214
diff changeset
437 yield bytes(outstr, 'utf8')
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parents: 214
diff changeset
438
d7a548ebcd58 serve: Add server sent events for showing pipeline errors in the debug window.
Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
439 count = 0
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Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
440 while True:
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parents: 214
diff changeset
441 if time.time() > self.timeout + self._start_time:
d7a548ebcd58 serve: Add server sent events for showing pipeline errors in the debug window.
Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
442 logger.debug("Closing pipeline status SSE, timeout reached.")
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parents: 214
diff changeset
443 outstr = 'event: pipeline_timeout\ndata: bye\n\n'
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parents: 214
diff changeset
444 yield bytes(outstr, 'utf8')
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Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
445 break
d7a548ebcd58 serve: Add server sent events for showing pipeline errors in the debug window.
Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
446
d7a548ebcd58 serve: Add server sent events for showing pipeline errors in the debug window.
Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
447 try:
d7a548ebcd58 serve: Add server sent events for showing pipeline errors in the debug window.
Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
448 logger.debug("Polling pipeline status queue...")
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parents: 214
diff changeset
449 count += 1
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parents: 214
diff changeset
450 data = self.status_queue.get(True, self.interval)
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Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
451 except queue.Empty:
d7a548ebcd58 serve: Add server sent events for showing pipeline errors in the debug window.
Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
452 if count < 3:
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Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
453 continue
d7a548ebcd58 serve: Add server sent events for showing pipeline errors in the debug window.
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parents: 214
diff changeset
454 data = {'type': 'ping', 'message': 'ping'}
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Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
455 count = 0
d7a548ebcd58 serve: Add server sent events for showing pipeline errors in the debug window.
Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
456
d7a548ebcd58 serve: Add server sent events for showing pipeline errors in the debug window.
Ludovic Chabant <ludovic@chabant.com>
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diff changeset
457 event_type = data['type']
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Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
458 outstr = 'event: %s\ndata: %s\n\n' % (
d7a548ebcd58 serve: Add server sent events for showing pipeline errors in the debug window.
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parents: 214
diff changeset
459 event_type, json.dumps(data))
d7a548ebcd58 serve: Add server sent events for showing pipeline errors in the debug window.
Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
460 logger.debug("Sending pipeline status SSE.")
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parents: 214
diff changeset
461 yield bytes(outstr, 'utf8')
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Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
462
d7a548ebcd58 serve: Add server sent events for showing pipeline errors in the debug window.
Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
463 def close(self):
d7a548ebcd58 serve: Add server sent events for showing pipeline errors in the debug window.
Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
464 logger.debug("Closing pipeline status SSE.")
d7a548ebcd58 serve: Add server sent events for showing pipeline errors in the debug window.
Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
465
d7a548ebcd58 serve: Add server sent events for showing pipeline errors in the debug window.
Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
466
209
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
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diff changeset
467 class ProcessingLoop(threading.Thread):
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
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parents: 205
diff changeset
468 def __init__(self, pipeline):
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diff changeset
469 super(ProcessingLoop, self).__init__(
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
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diff changeset
470 name='pipeline-reloader', daemon=True)
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
471 self.pipeline = pipeline
219
d7a548ebcd58 serve: Add server sent events for showing pipeline errors in the debug window.
Ludovic Chabant <ludovic@chabant.com>
parents: 214
diff changeset
472 self.status_queue = queue.Queue()
209
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
473 self.interval = 1
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
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diff changeset
474 self._paths = set()
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
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diff changeset
475 self._record = None
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
476 self._last_bake = 0
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
477
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
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diff changeset
478 def run(self):
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diff changeset
479 # Build the first list of known files and run the pipeline once.
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
480 app = self.pipeline.app
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
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diff changeset
481 roots = [os.path.join(app.root_dir, r)
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
482 for r in self.pipeline.mounts.keys()]
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
483 for root in roots:
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
484 for dirpath, dirnames, filenames in os.walk(root):
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
485 self._paths |= set([os.path.join(dirpath, f)
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
486 for f in filenames])
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
487 self._last_bake = time.time()
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parents: 205
diff changeset
488 self._record = self.pipeline.run(save_record=False)
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
489
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
490 while True:
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
491 for root in roots:
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
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parents: 205
diff changeset
492 # For each mount root we try to find the first new or
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parents: 205
diff changeset
493 # modified file. If any, we just run the pipeline on
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
494 # that mount.
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diff changeset
495 found_new_or_modified = False
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Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
496 for dirpath, dirnames, filenames in os.walk(root):
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
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parents: 205
diff changeset
497 for filename in filenames:
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diff changeset
498 path = os.path.join(dirpath, filename)
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Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
499 if path not in self._paths:
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Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
500 logger.debug("Found new asset: %s" % path)
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
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parents: 205
diff changeset
501 self._paths.add(path)
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Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
502 found_new_or_modified = True
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Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
503 break
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
504 if os.path.getmtime(path) > self._last_bake:
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
505 logger.debug("Found modified asset: %s" % path)
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
506 found_new_or_modified = True
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
507 break
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
508
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
509 if found_new_or_modified:
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
510 break
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
511
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
512 if found_new_or_modified:
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
513 self._runPipeline(root)
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
514
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
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diff changeset
515 time.sleep(self.interval)
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
516
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
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diff changeset
517 def _runPipeline(self, root):
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parents: 205
diff changeset
518 self._last_bake = time.time()
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
519 try:
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
diff changeset
520 self._record = self.pipeline.run(
7a5a7a7e8cee serve: Run the asset pipeline asynchronously.
Ludovic Chabant <ludovic@chabant.com>
parents: 205
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521 root,
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522 previous_record=self._record,
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523 save_record=False)
219
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524
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525 # Update the status queue.
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526 # (we need to clear it because there may not be a consumer
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527 # on the other side, if the user isn't running with the
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528 # debug window active)
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529 while True:
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530 try:
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531 self.status_queue.get_nowait()
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532 except queue.Empty:
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533 break
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534
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535 if self._record.success:
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536 item = {
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537 'type': 'pipeline_success'}
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538 self.status_queue.put_nowait(item)
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539 else:
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540 item = {
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541 'type': 'pipeline_error',
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542 'assets': []}
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543 for entry in self._record.entries:
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544 if entry.errors:
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545 asset_item = {
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546 'path': entry.rel_input,
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547 'errors': list(entry.errors)}
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548 item['assets'].append(asset_item)
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549 self.status_queue.put_nowait(item)
209
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550 except:
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551 pass
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552