Mercurial > piecrust2

annotate piecrust/baking/worker.py @ 459:2ef04e16f0b9

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internal: Add support for fake pickling of date/time structures.
author Ludovic Chabant <ludovic@chabant.com>
date Sat, 11 Jul 2015 00:44:58 -0700
parents cb3446be44b7
children 456db44dcc53
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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411
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1 import time
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2 import logging
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3 from piecrust.app import PieCrust
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4 from piecrust.baking.records import BakeRecord, _get_transition_key
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5 from piecrust.baking.single import PageBaker, BakingError
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6 from piecrust.environment import AbortedSourceUseError
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7 from piecrust.rendering import (
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8 QualifiedPage, PageRenderingContext, render_page_segments)
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9 from piecrust.routing import create_route_metadata
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10 from piecrust.sources.base import PageFactory
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11 from piecrust.workerpool import IWorker
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12
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13
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14 logger = logging.getLogger(__name__)
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15
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16
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17 class BakeWorkerContext(object):
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18 def __init__(self, root_dir, sub_cache_dir, out_dir,
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19 previous_record_path=None,
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20 force=False, debug=False):
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21 self.root_dir = root_dir
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22 self.sub_cache_dir = sub_cache_dir
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23 self.out_dir = out_dir
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24 self.previous_record_path = previous_record_path
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25 self.force = force
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26 self.debug = debug
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27 self.app = None
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28 self.previous_record = None
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29 self.previous_record_index = None
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30
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31
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32 class BakeWorker(IWorker):
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33 def __init__(self, ctx):
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34 self.ctx = ctx
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35 self.work_start_time = time.perf_counter()
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36
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37 def initialize(self):
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38 # Create the app local to this worker.
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39 app = PieCrust(self.ctx.root_dir, debug=self.ctx.debug)
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40 app._useSubCacheDir(self.ctx.sub_cache_dir)
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41 app.env.fs_cache_only_for_main_page = True
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42 app.env.registerTimer("BakeWorker_%d_Total" % self.wid)
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43 app.env.registerTimer("BakeWorkerInit")
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44 app.env.registerTimer("JobReceive")
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45 self.ctx.app = app
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46
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47 # Load previous record
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48 if self.ctx.previous_record_path:
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49 self.ctx.previous_record = BakeRecord.load(
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50 self.ctx.previous_record_path)
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51 self.ctx.previous_record_index = {}
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52 for e in self.ctx.previous_record.entries:
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53 key = _get_transition_key(e.path, e.taxonomy_info)
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54 self.ctx.previous_record_index[key] = e
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55
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56 # Create the job handlers.
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57 job_handlers = {
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58 JOB_LOAD: LoadJobHandler(self.ctx),
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59 JOB_RENDER_FIRST: RenderFirstSubJobHandler(self.ctx),
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60 JOB_BAKE: BakeJobHandler(self.ctx)}
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61 for jt, jh in job_handlers.items():
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62 app.env.registerTimer(type(jh).__name__)
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63 self.job_handlers = job_handlers
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64
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65 app.env.stepTimerSince("BakeWorkerInit", self.work_start_time)
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66
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67 def process(self, job):
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68 handler = self.job_handlers[job['type']]
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69 with self.ctx.app.env.timerScope(type(handler).__name__):
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70 return handler.handleJob(job['job'])
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71
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72 def getReport(self):
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73 self.ctx.app.env.stepTimerSince("BakeWorker_%d_Total" % self.wid,
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74 self.work_start_time)
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75 return {
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76 'type': 'timers',
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77 'data': self.ctx.app.env._timers}
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78
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79
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80 JOB_LOAD, JOB_RENDER_FIRST, JOB_BAKE = range(0, 3)
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81
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82
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83 class JobHandler(object):
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84 def __init__(self, ctx):
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85 self.ctx = ctx
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86
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87 @property
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88 def app(self):
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89 return self.ctx.app
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90
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91 def handleJob(self, job):
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92 raise NotImplementedError()
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93
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94
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95 def _get_errors(ex):
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96 errors = []
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97 while ex is not None:
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98 errors.append(str(ex))
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99 ex = ex.__cause__
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100 return errors
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101
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102
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103 def save_factory(fac):
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104 return {
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105 'source_name': fac.source.name,
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106 'rel_path': fac.rel_path,
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107 'metadata': fac.metadata}
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108
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109
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110 def load_factory(app, info):
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111 source = app.getSource(info['source_name'])
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112 return PageFactory(source, info['rel_path'], info['metadata'])
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113
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114
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115 class LoadJobHandler(JobHandler):
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116 def handleJob(self, job):
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117 # Just make sure the page has been cached.
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118 fac = load_factory(self.app, job)
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119 logger.debug("Loading page: %s" % fac.ref_spec)
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120 result = {
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121 'source_name': fac.source.name,
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122 'path': fac.path,
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123 'config': None,
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124 'errors': None}
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125 try:
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126 page = fac.buildPage()
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127 page._load()
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128 result['config'] = page.config.getAll()
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129 except Exception as ex:
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130 logger.debug("Got loading error. Sending it to master.")
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131 result['errors'] = _get_errors(ex)
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132 if self.ctx.debug:
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133 logger.exception(ex)
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134 return result
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135
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136
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137 class RenderFirstSubJobHandler(JobHandler):
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138 def handleJob(self, job):
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139 # Render the segments for the first sub-page of this page.
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140 fac = load_factory(self.app, job)
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141
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142 # These things should be OK as they're checked upstream by the baker.
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143 route = self.app.getRoute(fac.source.name, fac.metadata,
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144 skip_taxonomies=True)
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145 assert route is not None
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146
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147 page = fac.buildPage()
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148 route_metadata = create_route_metadata(page)
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149 qp = QualifiedPage(page, route, route_metadata)
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150 ctx = PageRenderingContext(qp)
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151 self.app.env.abort_source_use = True
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152
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153 result = {
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154 'path': fac.path,
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155 'aborted': False,
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156 'errors': None}
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157 logger.debug("Preparing page: %s" % fac.ref_spec)
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158 try:
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159 render_page_segments(ctx)
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160 except AbortedSourceUseError:
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161 logger.debug("Page %s was aborted." % fac.ref_spec)
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162 result['aborted'] = True
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163 except Exception as ex:
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164 logger.debug("Got rendering error. Sending it to master.")
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165 result['errors'] = _get_errors(ex)
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166 if self.ctx.debug:
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167 logger.exception(ex)
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168 finally:
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169 self.app.env.abort_source_use = False
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170 return result
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171
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172
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173 class BakeJobHandler(JobHandler):
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174 def __init__(self, ctx):
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175 super(BakeJobHandler, self).__init__(ctx)
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176 self.page_baker = PageBaker(ctx.app, ctx.out_dir, ctx.force)
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177
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178 def handleJob(self, job):
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179 # Actually bake the page and all its sub-pages to the output folder.
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180 fac = load_factory(self.app, job['factory_info'])
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181
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182 route_metadata = job['route_metadata']
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183 tax_info = job['taxonomy_info']
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184 if tax_info is not None:
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185 route = self.app.getTaxonomyRoute(tax_info.taxonomy_name,
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186 tax_info.source_name)
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187 else:
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188 route = self.app.getRoute(fac.source.name, route_metadata,
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189 skip_taxonomies=True)
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190 assert route is not None
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191
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192 page = fac.buildPage()
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193 qp = QualifiedPage(page, route, route_metadata)
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194
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195 result = {
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196 'path': fac.path,
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197 'taxonomy_info': tax_info,
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198 'sub_entries': None,
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199 'errors': None}
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200 dirty_source_names = job['dirty_source_names']
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201
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202 previous_entry = None
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203 if self.ctx.previous_record_index is not None:
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204 key = _get_transition_key(fac.path, tax_info)
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205 previous_entry = self.ctx.previous_record_index.get(key)
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206
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207 logger.debug("Baking page: %s" % fac.ref_spec)
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208 try:
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209 sub_entries = self.page_baker.bake(
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210 qp, previous_entry, dirty_source_names, tax_info)
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211 result['sub_entries'] = sub_entries
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212
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213 except BakingError as ex:
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214 logger.debug("Got baking error. Sending it to master.")
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215 result['errors'] = _get_errors(ex)
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216 if self.ctx.debug:
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217 logger.exception(ex)
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218
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219 return result
411
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220