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annotate piecrust/sources/blogarchives.py @ 853:f070a4fc033c

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core: Continue PieCrust3 refactor, simplify pages. The asset pipeline is still the only function pipeline at this point. * No more `QualifiedPage`, and several other pieces of code deleted. * Data providers are simpler and more focused. For instance, the page iterator doesn't try to support other types of items. * Route parameters are proper known source metadata to remove the confusion between the two. * Make the baker and pipeline more correctly manage records and record histories. * Add support for record collapsing and deleting stale outputs in the asset pipeline.
author Ludovic Chabant <ludovic@chabant.com>
date Sun, 21 May 2017 00:06:59 -0700
parents 4850f8c21b6e
children 08e02c2a2a1a
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852
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1 import logging
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2 import datetime
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3 from piecrust.chefutil import format_timed_scope
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4 from piecrust.data.filters import PaginationFilter, IFilterClause
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5 from piecrust.dataproviders.page_iterator import PageIterator
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6 from piecrust.routing import RouteParameter
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7 from piecrust.sources.base import ContentSource, GeneratedContentException
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8
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9
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10 logger = logging.getLogger(__name__)
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11
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12
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13 class BlogArchivesSource(ContentSource):
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14 SOURCE_NAME = 'blog_archives'
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15
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16 def __init__(self, app, name, config):
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17 super().__init__(app, name, config)
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18
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19 def getContents(self, group):
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20 raise GeneratedContentException()
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21
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22 def prepareRenderContext(self, ctx):
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23 ctx.pagination_source = self.source
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24
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25 year = ctx.page.route_metadata.get('year')
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26 if year is None:
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27 raise Exception(
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28 "Can't find the archive year in the route metadata")
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29 if type(year) is not int:
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30 raise Exception(
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31 "The route for generator '%s' should specify an integer "
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32 "parameter for 'year'." % self.name)
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33
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34 flt = PaginationFilter()
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35 flt.addClause(IsFromYearFilterClause(year))
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36 ctx.pagination_filter = flt
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37
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38 ctx.custom_data['year'] = year
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39
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40 flt2 = PaginationFilter()
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41 flt2.addClause(IsFromYearFilterClause(year))
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42 it = PageIterator(self.source, pagination_filter=flt2,
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43 sorter=_date_sorter)
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44 ctx.custom_data['archives'] = it
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45
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46 def bake(self, ctx):
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47 if not self.page_ref.exists:
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48 logger.debug(
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49 "No page found at '%s', skipping %s archives." %
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50 (self.page_ref, self.source_name))
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51 return
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52
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53 logger.debug("Baking %s archives...", self.source_name)
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54 with format_timed_scope(logger, 'gathered archive years',
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55 level=logging.DEBUG, colored=False):
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56 all_years, dirty_years = self._buildDirtyYears(ctx)
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57
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58 with format_timed_scope(logger, "baked %d %s archives." %
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59 (len(dirty_years), self.source_name)):
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60 self._bakeDirtyYears(ctx, all_years, dirty_years)
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61
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62 def _getSource(self):
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63 return self.app.getSource(self.config['source'])
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64
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65 def _buildDirtyYears(self, ctx):
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66 logger.debug("Gathering dirty post years.")
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67 all_years = set()
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68 dirty_years = set()
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69 for _, cur_entry in ctx.getAllPageRecords():
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70 if cur_entry and cur_entry.source_name == self.source_name:
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71 dt = datetime.datetime.fromtimestamp(cur_entry.timestamp)
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72 all_years.add(dt.year)
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73 if cur_entry.was_any_sub_baked:
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74 dirty_years.add(dt.year)
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75 return all_years, dirty_years
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76
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77 def _bakeDirtyYears(self, ctx, all_years, dirty_years):
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78 route = self.app.getGeneratorRoute(self.name)
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79 if route is None:
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80 raise Exception(
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81 "No routes have been defined for generator: %s" %
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82 self.name)
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83
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84 logger.debug("Using archive page: %s" % self.page_ref)
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85 fac = self.page_ref.getFactory()
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86
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87 for y in dirty_years:
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88 extra_route_metadata = {'year': y}
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89
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90 logger.debug("Queuing: %s [%s]" % (fac.ref_spec, y))
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91 ctx.queueBakeJob(fac, route, extra_route_metadata, str(y))
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92 ctx.runJobQueue()
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93
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94 # Create bake entries for the years that were *not* dirty.
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95 # Otherwise, when checking for deleted pages, we would not find any
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96 # outputs and would delete those files.
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97 all_str_years = [str(y) for y in all_years]
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98 for prev_entry, cur_entry in ctx.getAllPageRecords():
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99 if prev_entry and not cur_entry:
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100 try:
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101 y = ctx.getSeedFromRecordExtraKey(prev_entry.extra_key)
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102 except InvalidRecordExtraKey:
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103 continue
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104 if y in all_str_years:
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105 logger.debug(
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106 "Creating unbaked entry for year %s archive." % y)
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107 ctx.collapseRecord(prev_entry)
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108 else:
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109 logger.debug(
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110 "No page references year %s anymore." % y)
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111
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112 def getSupportedRouteParameters(self):
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113 return [RouteParameter('year', RouteParameter.TYPE_INT4)]
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114
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115
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116 class IsFromYearFilterClause(IFilterClause):
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117 def __init__(self, year):
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118 self.year = year
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119
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Ludovic Chabant <ludovic@chabant.com>
parents:
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120 def pageMatches(self, fil, page):
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Ludovic Chabant <ludovic@chabant.com>
parents:
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121 return (page.datetime.year == self.year)
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Ludovic Chabant <ludovic@chabant.com>
parents:
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122
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
Ludovic Chabant <ludovic@chabant.com>
parents:
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123
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
Ludovic Chabant <ludovic@chabant.com>
parents:
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124 def _date_sorter(it):
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Ludovic Chabant <ludovic@chabant.com>
parents:
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125 return sorted(it, key=lambda x: x.datetime)
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Ludovic Chabant <ludovic@chabant.com>
parents:
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126