annotate piecrust/sources/posts.py @ 411:e7b865f8f335

bake: Enable multiprocess baking. Baking is now done by running a worker per CPU, and sending jobs to them. This changes several things across the codebase: * Ability to not cache things related to pages other than the 'main' page (i.e. the page at the bottom of the execution stack). * Decouple the baking process from the bake records, so only the main process keeps track (and modifies) the bake record. * Remove the need for 'batch page getters' and loading a page directly from the page factories. There are various smaller changes too included here, including support for scope performance timers that are saved with the bake record and can be printed out to the console. Yes I got carried away. For testing, the in-memory 'mock' file-system doesn't work anymore, since we're spawning processes, so this is replaced by a 'tmpfs' file-system which is saved in temporary files on disk and deleted after tests have run.
author Ludovic Chabant <ludovic@chabant.com>
date Fri, 12 Jun 2015 17:09:19 -0700
parents dd25bd3ce1f9
children 73bd408caebc
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1 import os
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2 import os.path
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3 import re
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4 import glob
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5 import logging
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6 import datetime
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7 from piecrust.sources.base import (
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8 PageSource, InvalidFileSystemEndpointError, PageFactory,
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9 MODE_CREATING, MODE_PARSING)
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10 from piecrust.sources.interfaces import IPreparingSource
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11 from piecrust.sources.mixins import SimplePaginationSourceMixin
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12 from piecrust.sources.pageref import PageNotFoundError
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15 logger = logging.getLogger(__name__)
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17
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18 class PostsSource(PageSource, IPreparingSource, SimplePaginationSourceMixin):
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19 PATH_FORMAT = None
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20
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21 def __init__(self, app, name, config):
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22 super(PostsSource, self).__init__(app, name, config)
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23 self.fs_endpoint = config.get('fs_endpoint', name)
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24 self.fs_endpoint_path = os.path.join(self.root_dir, self.fs_endpoint)
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25 self.supported_extensions = list(app.config.get('site/auto_formats').keys())
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26 self.default_auto_format = app.config.get('site/default_auto_format')
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28 @property
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29 def path_format(self):
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30 return self.__class__.PATH_FORMAT
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32 def resolveRef(self, ref_path):
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33 path = os.path.normpath(os.path.join(self.fs_endpoint_path, ref_path))
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34 metadata = self._parseMetadataFromPath(ref_path)
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35 return path, metadata
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36
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37 def findPageFactory(self, metadata, mode):
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38 year = metadata.get('year')
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39 month = metadata.get('month')
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40 day = metadata.get('day')
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41 slug = metadata.get('slug')
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42
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43 try:
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44 if year is not None:
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45 year = int(year)
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46 if month is not None:
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47 month = int(month)
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48 if day is not None:
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49 day = int(day)
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50 except ValueError:
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51 return None
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52
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53 ext = metadata.get('ext')
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54 if ext is None:
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55 if len(self.supported_extensions) == 1:
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56 ext = self.supported_extensions[0]
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57 elif mode == MODE_CREATING and self.default_auto_format:
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58 ext = self.default_auto_format
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59
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60 replacements = {
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61 'year': '%04d' % year if year is not None else None,
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62 'month': '%02d' % month if month is not None else None,
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63 'day': '%02d' % day if day is not None else None,
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64 'slug': slug,
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65 'ext': ext
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66 }
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67 needs_recapture = False
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68 if year is None:
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69 needs_recapture = True
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70 replacements['year'] = '????'
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71 if month is None:
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72 needs_recapture = True
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73 replacements['month'] = '??'
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74 if day is None:
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75 needs_recapture = True
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76 replacements['day'] = '??'
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77 if slug is None:
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78 needs_recapture = True
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79 replacements['slug'] = '*'
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80 if ext is None:
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81 needs_recapture = True
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82 replacements['ext'] = '*'
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83 path = os.path.normpath(os.path.join(
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84 self.fs_endpoint_path, self.path_format % replacements))
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85
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86 if needs_recapture:
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87 if mode == MODE_CREATING:
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88 raise ValueError("Not enough information to find a post path.")
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89 possible_paths = glob.glob(path)
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90 if len(possible_paths) != 1:
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91 raise PageNotFoundError()
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92 path = possible_paths[0]
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93 elif mode == MODE_PARSING and not os.path.isfile(path):
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94 raise PageNotFoundError(path)
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95
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96 rel_path = os.path.relpath(path, self.fs_endpoint_path)
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97 rel_path = rel_path.replace('\\', '/')
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98 fac_metadata = self._parseMetadataFromPath(rel_path)
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99 return PageFactory(self, rel_path, fac_metadata)
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100
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101 def setupPrepareParser(self, parser, app):
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102 parser.add_argument('-d', '--date', help="The date of the post, "
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103 "in `year/month/day` format (defaults to today).")
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104 parser.add_argument('slug', help="The URL slug for the new post.")
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105
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106 def buildMetadata(self, args):
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107 dt = datetime.date.today()
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108 if args.date:
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109 if args.date == 'today':
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110 pass # Keep the default we had.
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111 elif args.date == 'tomorrow':
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112 dt += datetime.timedelta(days=1)
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113 elif args.date.startswith('+'):
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114 try:
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115 dt += datetime.timedelta(days=int(args.date.lstrip('+')))
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116 except ValueError:
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117 raise Exception("Date offsets must be numbers.")
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118 else:
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119 try:
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120 year, month, day = [int(s) for s in args.date.split('/')]
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121 except ValueError:
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122 raise Exception("Dates must be of the form: YEAR/MONTH/DAY.")
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123 dt = datetime.date(year, month, day)
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124
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125 year, month, day = dt.year, dt.month, dt.day
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126 return {'year': year, 'month': month, 'day': day, 'slug': args.slug}
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127
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128 def _checkFsEndpointPath(self):
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129 if not os.path.isdir(self.fs_endpoint_path):
84
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130 if self.ignore_missing_dir:
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131 return False
3
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132 raise InvalidFileSystemEndpointError(self.name, self.fs_endpoint_path)
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133 return True
3
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134
363
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135 def _parseMetadataFromPath(self, path):
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136 regex_repl = {
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137 'year': '(?P<year>\d{4})',
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138 'month': '(?P<month>\d{2})',
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139 'day': '(?P<day>\d{2})',
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140 'slug': '(?P<slug>.*)',
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141 'ext': '(?P<ext>.*)'
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142 }
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143 path_format_re = re.sub(r'([\-\.])', r'\\\1', self.path_format)
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144 pattern = path_format_re % regex_repl + '$'
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145 m = re.search(pattern, path.replace('\\', '/'))
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146 if not m:
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147 raise Exception("Expected to be able to match path with path "
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148 "format: %s" % path)
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149
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150 year = int(m.group('year'))
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151 month = int(m.group('month'))
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152 day = int(m.group('day'))
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153 timestamp = datetime.date(year, month, day)
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154 metadata = {
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155 'year': year,
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156 'month': month,
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157 'day': day,
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158 'slug': m.group('slug'),
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159 'date': timestamp
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160 }
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161 return metadata
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162
3
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163 def _makeFactory(self, path, slug, year, month, day):
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164 path = path.replace('\\', '/')
3
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165 timestamp = datetime.date(year, month, day)
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166 metadata = {
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167 'slug': slug,
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168 'year': year,
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169 'month': month,
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170 'day': day,
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171 'date': timestamp}
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172 return PageFactory(self, path, metadata)
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173
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174
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175 class FlatPostsSource(PostsSource):
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176 SOURCE_NAME = 'posts/flat'
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177 PATH_FORMAT = '%(year)s-%(month)s-%(day)s_%(slug)s.%(ext)s'
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178
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179 def __init__(self, app, name, config):
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180 super(FlatPostsSource, self).__init__(app, name, config)
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181
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182 def buildPageFactories(self):
84
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183 if not self._checkFsEndpointPath():
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184 return
3
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185 logger.debug("Scanning for posts (flat) in: %s" % self.fs_endpoint_path)
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186 pattern = re.compile(r'(\d{4})-(\d{2})-(\d{2})_(.*)\.(\w+)$')
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187 _, __, filenames = next(os.walk(self.fs_endpoint_path))
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188 for f in filenames:
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189 match = pattern.match(f)
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190 if match is None:
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191 name, ext = os.path.splitext(f)
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192 logger.warning("'%s' is not formatted as 'YYYY-MM-DD_slug-title.%s' "
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193 "and will be ignored. Is that a typo?" % (f, ext))
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194 continue
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195 yield self._makeFactory(
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196 f,
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197 match.group(4),
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198 int(match.group(1)),
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199 int(match.group(2)),
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200 int(match.group(3)))
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201
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202
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203 class ShallowPostsSource(PostsSource):
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204 SOURCE_NAME = 'posts/shallow'
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205 PATH_FORMAT = '%(year)s/%(month)s-%(day)s_%(slug)s.%(ext)s'
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206
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207 def __init__(self, app, name, config):
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208 super(ShallowPostsSource, self).__init__(app, name, config)
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209
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210 def buildPageFactories(self):
84
b3ce11b2cf36 Don't complain about missing `pages` or `posts` directories by default.
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diff changeset
211 if not self._checkFsEndpointPath():
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diff changeset
212 return
3
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213 logger.debug("Scanning for posts (shallow) in: %s" % self.fs_endpoint_path)
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diff changeset
214 year_pattern = re.compile(r'(\d{4})$')
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215 file_pattern = re.compile(r'(\d{2})-(\d{2})_(.*)\.(\w+)$')
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216 _, year_dirs, __ = next(os.walk(self.fs_endpoint_path))
5
474c9882decf Upgrade to Python 3.
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diff changeset
217 year_dirs = [d for d in year_dirs if year_pattern.match(d)]
3
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218 for yd in year_dirs:
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219 if year_pattern.match(yd) is None:
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220 logger.warning("'%s' is not formatted as 'YYYY' and will be ignored. "
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diff changeset
221 "Is that a typo?")
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222 continue
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223 year = int(yd)
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224 year_dir = os.path.join(self.fs_endpoint_path, yd)
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diff changeset
225
95
cb6eadea0845 Fixed a bug with the `shallow` source. Add unit tests.
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diff changeset
226 _, __, filenames = next(os.walk(year_dir))
3
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227 for f in filenames:
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228 match = file_pattern.match(f)
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229 if match is None:
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230 name, ext = os.path.splitext(f)
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diff changeset
231 logger.warning("'%s' is not formatted as 'MM-DD_slug-title.%s' "
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diff changeset
232 "and will be ignored. Is that a typo?" % (f, ext))
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233 continue
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234 yield self._makeFactory(
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235 os.path.join(yd, f),
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diff changeset
236 match.group(3),
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diff changeset
237 year,
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238 int(match.group(1)),
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diff changeset
239 int(match.group(2)))
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240
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241
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242 class HierarchyPostsSource(PostsSource):
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243 SOURCE_NAME = 'posts/hierarchy'
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diff changeset
244 PATH_FORMAT = '%(year)s/%(month)s/%(day)s_%(slug)s.%(ext)s'
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245
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246 def __init__(self, app, name, config):
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247 super(HierarchyPostsSource, self).__init__(app, name, config)
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248
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249 def buildPageFactories(self):
84
b3ce11b2cf36 Don't complain about missing `pages` or `posts` directories by default.
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diff changeset
250 if not self._checkFsEndpointPath():
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diff changeset
251 return
3
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252 logger.debug("Scanning for posts (hierarchy) in: %s" % self.fs_endpoint_path)
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diff changeset
253 year_pattern = re.compile(r'(\d{4})$')
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254 month_pattern = re.compile(r'(\d{2})$')
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255 file_pattern = re.compile(r'(\d{2})_(.*)\.(\w+)$')
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256 _, year_dirs, __ = next(os.walk(self.fs_endpoint_path))
5
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257 year_dirs = [d for d in year_dirs if year_pattern.match(d)]
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258 for yd in year_dirs:
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259 year = int(yd)
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260 year_dir = os.path.join(self.fs_endpoint_path, yd)
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261
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262 _, month_dirs, __ = next(os.walk(year_dir))
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263 month_dirs = [d for d in month_dirs if month_pattern.match(d)]
3
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264 for md in month_dirs:
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265 month = int(md)
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266 month_dir = os.path.join(year_dir, md)
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267
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268 _, __, filenames = next(os.walk(month_dir))
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269 for f in filenames:
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270 match = file_pattern.match(f)
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271 if match is None:
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272 name, ext = os.path.splitext(f)
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273 logger.warning("'%s' is not formatted as 'DD_slug-title.%s' "
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274 "and will be ignored. Is that a typo?" % (f, ext))
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275 continue
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276 rel_name = os.path.join(yd, md, f)
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277 yield self._makeFactory(
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278 rel_name,
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279 match.group(2),
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280 year,
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281 month,
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282 int(match.group(1)))
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283