annotate piecrust/generation/base.py @ 711:ab5c6a8ae90a

bake: Replace hard-coded taxonomy support with "generator" system. * Taxonomies are now implemented one or more `TaxonomyGenerator`s. * A `BlogArchivesGenerator` stub is there but non-functional.
author Ludovic Chabant <ludovic@chabant.com>
date Thu, 26 May 2016 19:52:47 -0700
parents
children 606f6d57b5df
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711
ab5c6a8ae90a bake: Replace hard-coded taxonomy support with "generator" system.
Ludovic Chabant <ludovic@chabant.com>
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1 from werkzeug.utils import cached_property
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2 from piecrust.baking.records import BakeRecordEntry
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3 from piecrust.baking.worker import save_factory, JOB_BAKE
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4 from piecrust.configuration import ConfigurationError
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5 from piecrust.routing import create_route_metadata
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6 from piecrust.sources.pageref import PageRef
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7
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8
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9 class InvalidRecordExtraKey(Exception):
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10 pass
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11
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12
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13 class PageGeneratorBakeContext(object):
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14 def __init__(self, app, record, pool, generator):
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15 self._app = app
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16 self._record = record
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17 self._pool = pool
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18 self._generator = generator
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19 self._job_queue = []
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20 self._is_running = False
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21
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22 def getRecordExtraKey(self, seed):
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23 return '%s:%s' % (self._generator.name, seed)
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24
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25 def matchesRecordExtraKey(self, extra_key):
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26 return (extra_key is not None and
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27 extra_key.startswith(self._generator.name + ':'))
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28
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29 def getSeedFromRecordExtraKey(self, extra_key):
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30 if not self.matchesRecordExtraKey(extra_key):
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31 raise InvalidRecordExtraKey("Invalid extra key: %s" % extra_key)
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32 return extra_key[len(self._generator.name) + 1:]
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33
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34 def getAllPageRecords(self):
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35 return self._record.transitions.values()
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36
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37 def getBakedPageRecords(self):
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38 for prev, cur in self.getAllPageRecords():
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39 if cur and cur.was_any_sub_baked:
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40 yield (prev, cur)
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41
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42 def collapseRecord(self, entry):
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43 self._record.collapseEntry(entry)
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44
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45 def queueBakeJob(self, page_fac, route, extra_route_metadata, seed):
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46 if self._is_running:
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47 raise Exception("The job queue is running.")
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48
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49 extra_key = self.getRecordExtraKey(seed)
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50 entry = BakeRecordEntry(
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51 page_fac.source.name,
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52 page_fac.path,
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53 extra_key)
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54 self._record.addEntry(entry)
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55
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56 page = page_fac.buildPage()
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57 route_metadata = create_route_metadata(page)
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58 route_metadata.update(extra_route_metadata)
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59 uri = route.getUri(route_metadata)
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60 override_entry = self._record.getOverrideEntry(page.path, uri)
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61 if override_entry is not None:
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62 override_source = self.app.getSource(
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63 override_entry.source_name)
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64 if override_source.realm == fac.source.realm:
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65 cur_entry.errors.append(
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66 "Page '%s' maps to URL '%s' but is overriden "
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67 "by page '%s'." %
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68 (fac.ref_spec, uri, override_entry.path))
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69 logger.error(cur_entry.errors[-1])
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70 cur_entry.flags |= BakeRecordEntry.FLAG_OVERRIDEN
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71 return
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72
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73 route_index = self._app.routes.index(route)
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74 job = {
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75 'type': JOB_BAKE,
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76 'job': {
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77 'factory_info': save_factory(page_fac),
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78 'generator_name': self._generator.name,
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79 'generator_record_key': extra_key,
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80 'route_index': route_index,
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81 'route_metadata': route_metadata,
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82 'dirty_source_names': self._record.dirty_source_names,
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83 'needs_config': True
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84 }
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85 }
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86 self._job_queue.append(job)
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87
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88 def runJobQueue(self):
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89 def _handler(res):
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90 entry = self._record.getCurrentEntry(
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91 res['path'], res['generator_record_key'])
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92 entry.config = res['config']
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93 entry.subs = res['sub_entries']
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94 if res['errors']:
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95 entry.errors += res['errors']
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96 if entry.has_any_error:
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97 self._record.current.success = False
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98
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99 self._is_running = True
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100 try:
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101 ar = self._pool.queueJobs(self._job_queue, handler=_handler)
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102 ar.wait()
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103 finally:
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104 self._is_running = False
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105
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106
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107 class PageGenerator(object):
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108 def __init__(self, app, name, config):
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109 self.app = app
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110 self.name = name
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111 self.config = config or {}
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112
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113 self.source_name = config.get('source')
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114 if self.source_name is None:
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115 raise ConfigurationError(
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116 "Generator '%s' requires a source name" % name)
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117
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118 page_ref = config.get('page')
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119 if page_ref is None:
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120 raise ConfigurationError(
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121 "Generator '%s' requires a listing page ref." % name)
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122 self.page_ref = PageRef(app, page_ref)
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123
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parents:
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124 @cached_property
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125 def source(self):
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126 for src in self.app.sources:
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127 if src.name == self.source_name:
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128 return src
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129 raise Exception("Can't find source '%s' for generator '%s'." % (
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130 self.source_name, self.name))
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131
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132 def bake(self, ctx):
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133 raise NotImplementedError()
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134
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135 def onRouteFunctionUsed(self, route, route_metadata):
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136 pass
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137