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annotate piecrust/baking/worker.py @ 696:3bc9f857eb48

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bake: Add stat about aborted jobs
author Ludovic Chabant <ludovic@chabant.com>
date Wed, 23 Mar 2016 10:54:03 -0700
parents 9ae9390192da
children c62d83e17abf
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, apply_variant_and_values
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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, appfactory, out_dir, *,
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19 force=False, previous_record_path=None):
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20 self.appfactory = appfactory
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21 self.out_dir = out_dir
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22 self.force = force
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23 self.previous_record_path = previous_record_path
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24 self.app = None
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25 self.previous_record = None
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26 self.previous_record_index = None
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28
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29 class BakeWorker(IWorker):
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30 def __init__(self, ctx):
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31 self.ctx = ctx
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32 self.work_start_time = time.perf_counter()
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33
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34 def initialize(self):
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35 # Create the app local to this worker.
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36 app = self.ctx.appfactory.create()
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37 app.config.set('baker/is_baking', True)
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38 app.config.set('baker/worker_id', self.wid)
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39 app.env.base_asset_url_format = '%uri%'
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40 app.env.fs_cache_only_for_main_page = True
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41 app.env.registerTimer("BakeWorker_%d_Total" % self.wid)
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42 app.env.registerTimer("BakeWorkerInit")
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43 app.env.registerTimer("JobReceive")
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44 app.env.registerCounter("SourceUseAbortions")
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45 app.env.registerManifest("LoadJobs")
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46 app.env.registerManifest("RenderJobs")
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47 app.env.registerManifest("BakeJobs")
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48 self.ctx.app = app
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49
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50 # Load previous record
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51 if self.ctx.previous_record_path:
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52 self.ctx.previous_record = BakeRecord.load(
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53 self.ctx.previous_record_path)
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54 self.ctx.previous_record_index = {}
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55 for e in self.ctx.previous_record.entries:
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56 key = _get_transition_key(e.path, e.taxonomy_info)
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57 self.ctx.previous_record_index[key] = e
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58
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59 # Create the job handlers.
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60 job_handlers = {
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61 JOB_LOAD: LoadJobHandler(self.ctx),
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62 JOB_RENDER_FIRST: RenderFirstSubJobHandler(self.ctx),
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63 JOB_BAKE: BakeJobHandler(self.ctx)}
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64 for jt, jh in job_handlers.items():
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65 app.env.registerTimer(type(jh).__name__)
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66 self.job_handlers = job_handlers
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67
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68 app.env.stepTimerSince("BakeWorkerInit", self.work_start_time)
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69
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70 def process(self, job):
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71 handler = self.job_handlers[job['type']]
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72 with self.ctx.app.env.timerScope(type(handler).__name__):
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73 return handler.handleJob(job['job'])
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74
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75 def getReport(self, pool_reports):
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76 self.ctx.app.env.stepTimerSince("BakeWorker_%d_Total" % self.wid,
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77 self.work_start_time)
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78 data = self.ctx.app.env.getStats()
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79 data.timers.update(pool_reports)
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80 return {
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81 'type': 'stats',
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82 'data': data}
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83
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84
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85 JOB_LOAD, JOB_RENDER_FIRST, JOB_BAKE = range(0, 3)
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86
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87
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88 class JobHandler(object):
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89 def __init__(self, ctx):
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90 self.ctx = ctx
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91
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92 @property
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93 def app(self):
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94 return self.ctx.app
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95
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96 def handleJob(self, job):
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97 raise NotImplementedError()
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98
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99
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100 def _get_errors(ex):
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101 errors = []
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102 while ex is not None:
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103 errors.append(str(ex))
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104 ex = ex.__cause__
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105 return errors
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106
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107
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108 def save_factory(fac):
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109 return {
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110 'source_name': fac.source.name,
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111 'rel_path': fac.rel_path,
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112 'metadata': fac.metadata}
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113
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114
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115 def load_factory(app, info):
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116 source = app.getSource(info['source_name'])
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117 return PageFactory(source, info['rel_path'], info['metadata'])
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118
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119
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120 class LoadJobHandler(JobHandler):
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121 def handleJob(self, job):
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122 # Just make sure the page has been cached.
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123 fac = load_factory(self.app, job)
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124 logger.debug("Loading page: %s" % fac.ref_spec)
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125 self.app.env.addManifestEntry('LoadJobs', fac.ref_spec)
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126 result = {
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127 'source_name': fac.source.name,
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128 'path': fac.path,
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129 'config': None,
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130 'errors': None}
411
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131 try:
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132 page = fac.buildPage()
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133 page._load()
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134 result['config'] = page.config.getAll()
411
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135 except Exception as ex:
415
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136 logger.debug("Got loading error. Sending it to master.")
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137 result['errors'] = _get_errors(ex)
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138 if self.ctx.app.debug:
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139 logger.exception(ex)
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140 return result
411
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141
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142
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143 class RenderFirstSubJobHandler(JobHandler):
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144 def handleJob(self, job):
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145 # Render the segments for the first sub-page of this page.
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146 fac = load_factory(self.app, job)
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147 self.app.env.addManifestEntry('RenderJobs', fac.ref_spec)
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148
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149 # These things should be OK as they're checked upstream by the baker.
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150 route = self.app.getRoute(fac.source.name, fac.metadata,
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151 skip_taxonomies=True)
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152 assert route is not None
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153
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154 page = fac.buildPage()
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155 route_metadata = create_route_metadata(page)
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156 qp = QualifiedPage(page, route, route_metadata)
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157 ctx = PageRenderingContext(qp)
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158 self.app.env.abort_source_use = True
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159
451
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160 result = {
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161 'path': fac.path,
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162 'aborted': False,
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163 'errors': None}
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164 logger.debug("Preparing page: %s" % fac.ref_spec)
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165 try:
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166 render_page_segments(ctx)
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167 except AbortedSourceUseError:
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168 logger.debug("Page %s was aborted." % fac.ref_spec)
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169 self.app.env.stepCounter("SourceUseAbortions")
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170 result['aborted'] = True
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171 except Exception as ex:
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172 logger.debug("Got rendering error. Sending it to master.")
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173 result['errors'] = _get_errors(ex)
690
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diff changeset
174 if self.ctx.app.debug:
415
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175 logger.exception(ex)
455
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176 finally:
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177 self.app.env.abort_source_use = False
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178 return result
411
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179
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180
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181 class BakeJobHandler(JobHandler):
453
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182 def __init__(self, ctx):
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183 super(BakeJobHandler, self).__init__(ctx)
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184 self.page_baker = PageBaker(ctx.app, ctx.out_dir, ctx.force)
411
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185
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186 def handleJob(self, job):
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187 # Actually bake the page and all its sub-pages to the output folder.
451
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188 fac = load_factory(self.app, job['factory_info'])
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189 self.app.env.addManifestEntry('BakeJobs', fac.ref_spec)
411
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190
451
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diff changeset
191 route_metadata = job['route_metadata']
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diff changeset
192 tax_info = job['taxonomy_info']
411
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193 if tax_info is not None:
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194 route = self.app.getTaxonomyRoute(tax_info.taxonomy_name,
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195 tax_info.source_name)
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196 else:
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197 route = self.app.getRoute(fac.source.name, route_metadata,
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198 skip_taxonomies=True)
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199 assert route is not None
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200
430
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diff changeset
201 page = fac.buildPage()
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diff changeset
202 qp = QualifiedPage(page, route, route_metadata)
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diff changeset
203
451
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diff changeset
204 result = {
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205 'path': fac.path,
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diff changeset
206 'taxonomy_info': tax_info,
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diff changeset
207 'sub_entries': None,
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diff changeset
208 'errors': None}
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diff changeset
209 dirty_source_names = job['dirty_source_names']
453
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diff changeset
210
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diff changeset
211 previous_entry = None
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diff changeset
212 if self.ctx.previous_record_index is not None:
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diff changeset
213 key = _get_transition_key(fac.path, tax_info)
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diff changeset
214 previous_entry = self.ctx.previous_record_index.get(key)
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diff changeset
215
411
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diff changeset
216 logger.debug("Baking page: %s" % fac.ref_spec)
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parents:
diff changeset
217 try:
415
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parents: 411
diff changeset
218 sub_entries = self.page_baker.bake(
430
21e26ed867b6 internal: Create full route metadata in one place.
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diff changeset
219 qp, previous_entry, dirty_source_names, tax_info)
451
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diff changeset
220 result['sub_entries'] = sub_entries
411
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diff changeset
221
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diff changeset
222 except BakingError as ex:
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diff changeset
223 logger.debug("Got baking error. Sending it to master.")
451
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diff changeset
224 result['errors'] = _get_errors(ex)
666
81d9c3a3a0b5 internal: Get rid of the whole "sub cache" business.
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diff changeset
225 if self.ctx.app.debug:
415
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parents: 411
diff changeset
226 logger.exception(ex)
411
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diff changeset
227
447
aefe70229fdd bake: Commonize worker pool code between html and asset baking.
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diff changeset
228 return result
411
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
229