Mercurial > piecrust2
annotate piecrust/serving/util.py @ 1051:971b4d67e82a
serve: Fix problems with assets disappearing between servings.
When an asset file changes, its source's pipeline is re-run. But that created
a bake record that only had that pipeline's output, so the other outputs were
incorrectly considered empty and therefore any stray files were removed. Now we
copy over bake records for the pipelines we don't run.
author | Ludovic Chabant <ludovic@chabant.com> |
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date | Fri, 26 Jan 2018 18:05:02 -0800 |
parents | 8adc27285d93 |
children | c8518f5cedbb |
rev | line source |
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553
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1 import re |
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2 import os.path |
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3 import hashlib |
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4 import logging |
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5 import datetime |
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6 from werkzeug.wrappers import Response |
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7 from werkzeug.wsgi import wrap_file |
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8 from piecrust.page import PageNotFoundError |
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9 from piecrust.routing import RouteNotFoundError |
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10 from piecrust.uriutil import split_sub_uri |
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11 |
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12 |
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13 logger = logging.getLogger(__name__) |
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14 |
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15 |
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16 def get_app_for_server(appfactory, root_url='/'): |
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17 app = appfactory.create() |
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18 app.config.set('site/root', root_url) |
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19 app.config.set('server/is_serving', True) |
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20 # We'll serve page assets directly from where they are. |
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21 app.config.set('site/asset_url_format', root_url + '_asset/%path%') |
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22 return app |
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23 |
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24 |
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25 class RequestedPage(object): |
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26 def __init__(self): |
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27 self.page = None |
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28 self.sub_num = 1 |
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29 self.req_path = None |
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30 self.not_found_errors = [] |
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31 |
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32 |
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33 def find_routes(routes, uri, decomposed_uri=None): |
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34 """ Returns routes matching the given URL. |
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35 """ |
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36 sub_num = 0 |
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37 uri_no_sub = None |
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38 if decomposed_uri is not None: |
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39 uri_no_sub, sub_num = decomposed_uri |
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40 |
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41 res = [] |
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42 for route in routes: |
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43 route_params = route.matchUri(uri) |
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44 if route_params is not None: |
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45 res.append((route, route_params, 1)) |
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46 |
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47 if sub_num > 1: |
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48 route_params = route.matchUri(uri_no_sub) |
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49 if route_params is not None: |
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50 res.append((route, route_params, sub_num)) |
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51 return res |
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52 |
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53 |
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54 def get_requested_page(app, req_path): |
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55 # Remove the trailing slash to simplify how we parse URLs. |
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56 root_url = app.config.get('site/root') |
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57 if req_path != root_url: |
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58 req_path = req_path.rstrip('/') |
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59 |
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60 # Try to find what matches the requested URL. |
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61 # It could also be a sub-page (i.e. the URL ends with a page number), so |
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62 # we try to also match the base URL (without the number). |
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63 req_path_no_sub, sub_num = split_sub_uri(app, req_path) |
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64 routes = find_routes(app.routes, req_path, (req_path_no_sub, sub_num)) |
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65 if len(routes) == 0: |
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66 raise RouteNotFoundError("Can't find route for: %s" % req_path) |
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67 |
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68 req_page = RequestedPage() |
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69 for route, route_params, route_sub_num in routes: |
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70 cur_req_path = req_path |
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71 if route_sub_num > 1: |
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72 cur_req_path = req_path_no_sub |
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73 |
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74 page = _get_requested_page_for_route(app, route, route_params) |
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75 if page is not None: |
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76 req_page.page = page |
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77 req_page.sub_num = route_sub_num |
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78 req_page.req_path = cur_req_path |
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79 break |
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80 |
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81 req_page.not_found_errors.append(PageNotFoundError( |
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82 "No path found for '%s' in source '%s'." % |
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83 (cur_req_path, route.source_name))) |
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84 |
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85 return req_page |
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86 |
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87 |
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88 def _get_requested_page_for_route(app, route, route_params): |
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89 source = app.getSource(route.source_name) |
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90 item = source.findContentFromRoute(route_params) |
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91 if item is not None: |
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92 return app.getPage(source, item) |
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93 return None |
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94 |
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95 |
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96 def load_mimetype_map(): |
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97 mimetype_map = {} |
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98 sep_re = re.compile(r'\s+') |
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99 path = os.path.join(os.path.dirname(__file__), 'mime.types') |
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100 with open(path, 'r') as f: |
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101 for line in f: |
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102 tokens = sep_re.split(line) |
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103 if len(tokens) > 1: |
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104 for t in tokens[1:]: |
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105 mimetype_map[t] = tokens[0] |
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106 return mimetype_map |
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107 |
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108 |
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109 def make_wrapped_file_response(environ, request, path): |
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110 logger.debug("Serving %s" % path) |
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111 |
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112 # Check if we can return a 304 status code. |
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113 mtime = os.path.getmtime(path) |
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114 etag_str = '%s$$%s' % (path, mtime) |
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115 etag = hashlib.md5(etag_str.encode('utf8')).hexdigest() |
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116 if etag in request.if_none_match: |
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117 response = Response() |
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118 response.status_code = 304 |
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119 return response |
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120 |
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121 wrapper = wrap_file(environ, open(path, 'rb')) |
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122 response = Response(wrapper) |
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123 _, ext = os.path.splitext(path) |
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124 response.set_etag(etag) |
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125 response.last_modified = datetime.datetime.fromtimestamp(mtime) |
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126 response.mimetype = mimetype_map.get( |
916 | 127 ext.lstrip('.'), 'text/plain') |
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128 response.direct_passthrough = True |
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129 return response |
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130 |
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131 |
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132 mimetype_map = load_mimetype_map() |
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133 content_type_map = { |
916 | 134 'html': 'text/html', |
135 'xml': 'text/xml', | |
136 'txt': 'text/plain', | |
137 'text': 'text/plain', | |
138 'css': 'text/css', | |
139 'xhtml': 'application/xhtml+xml', | |
140 'atom': 'application/atom+xml', # or 'text/xml'? | |
141 'rss': 'application/rss+xml', # or 'text/xml'? | |
142 'json': 'application/json'} | |
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143 |