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annotate piecrust/baking/worker.py @ 422:a8a12f97addf

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internal: Remove unnecessary code.
author Ludovic Chabant <ludovic@chabant.com>
date Sat, 20 Jun 2015 23:54:57 -0700
parents 4a43d7015b75
children afeebdd9f767
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411
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1 import time
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2 import copy
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3 import queue
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4 import logging
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5 from piecrust.app import PieCrust
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6 from piecrust.baking.single import PageBaker, BakingError
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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.sources.base import PageFactory
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10
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11
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12 logger = logging.getLogger(__name__)
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13
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14
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15 def worker_func(wid, ctx):
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16 logger.debug("Worker %d booting up..." % wid)
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17 w = BakeWorker(wid, ctx)
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18 w.run()
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19
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20
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21 class BakeWorkerContext(object):
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22 def __init__(self, root_dir, out_dir,
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23 work_queue, results, abort_event,
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24 force=False, debug=False):
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25 self.root_dir = root_dir
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26 self.out_dir = out_dir
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27 self.work_queue = work_queue
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28 self.results = results
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29 self.abort_event = abort_event
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30 self.force = force
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31 self.debug = debug
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32
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33
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34 JOB_LOAD, JOB_RENDER_FIRST, JOB_BAKE = range(0, 3)
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35
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36
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37 class BakeWorkerJob(object):
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38 def __init__(self, job_type, payload):
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39 self.job_type = job_type
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40 self.payload = payload
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41
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42
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43 class BakeWorker(object):
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44 def __init__(self, wid, ctx):
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45 self.wid = wid
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46 self.ctx = ctx
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47
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48 def run(self):
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49 logger.debug("Working %d initializing..." % self.wid)
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50 work_start_time = time.perf_counter()
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51
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52 # Create the app local to this worker.
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53 app = PieCrust(self.ctx.root_dir, debug=self.ctx.debug)
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54 app.env.fs_cache_only_for_main_page = True
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55 app.env.registerTimer("BakeWorker_%d_Total" % self.wid)
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56 app.env.registerTimer("BakeWorkerInit")
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57 app.env.registerTimer("JobReceive")
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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(app, self.ctx),
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62 JOB_RENDER_FIRST: RenderFirstSubJobHandler(app, self.ctx),
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63 JOB_BAKE: BakeJobHandler(app, 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
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67 app.env.stepTimerSince("BakeWorkerInit", work_start_time)
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68
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69 # Start working!
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70 aborted_with_exception = None
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71 while not self.ctx.abort_event.is_set():
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72 try:
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73 with app.env.timerScope('JobReceive'):
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74 job = self.ctx.work_queue.get(True, 0.01)
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75 except queue.Empty:
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76 continue
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77
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78 try:
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79 handler = job_handlers[job.job_type]
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80 with app.env.timerScope(type(handler).__name__):
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81 handler.handleJob(job)
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82 except Exception as ex:
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83 self.ctx.abort_event.set()
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84 aborted_with_exception = ex
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85 logger.debug("[%d] Critical error, aborting." % self.wid)
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86 if self.ctx.debug:
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87 logger.exception(ex)
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88 break
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89 finally:
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90 self.ctx.work_queue.task_done()
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91
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92 if aborted_with_exception is not None:
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93 msgs = _get_errors(aborted_with_exception)
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94 self.ctx.results.put_nowait({'type': 'error', 'messages': msgs})
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95
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96 # Send our timers to the main process before exiting.
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97 app.env.stepTimerSince("BakeWorker_%d_Total" % self.wid,
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98 work_start_time)
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99 self.ctx.results.put_nowait({
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100 'type': 'timers', 'data': app.env._timers})
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101
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102
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103 class JobHandler(object):
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104 def __init__(self, app, ctx):
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105 self.app = app
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106 self.ctx = ctx
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107
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108 def handleJob(self, job):
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109 raise NotImplementedError()
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110
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111
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112 def _get_errors(ex):
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113 errors = []
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114 while ex is not None:
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115 errors.append(str(ex))
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116 ex = ex.__cause__
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117 return errors
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118
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119
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120 class PageFactoryInfo(object):
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121 def __init__(self, fac):
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122 self.source_name = fac.source.name
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123 self.rel_path = fac.rel_path
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124 self.metadata = fac.metadata
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125
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126 def build(self, app):
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127 source = app.getSource(self.source_name)
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128 return PageFactory(source, self.rel_path, self.metadata)
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129
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130
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131 class LoadJobPayload(object):
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132 def __init__(self, fac):
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133 self.factory_info = PageFactoryInfo(fac)
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134
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135
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136 class LoadJobResult(object):
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137 def __init__(self, source_name, path):
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138 self.source_name = source_name
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139 self.path = path
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140 self.config = None
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141 self.errors = None
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142
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143
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144 class RenderFirstSubJobPayload(object):
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145 def __init__(self, fac):
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146 self.factory_info = PageFactoryInfo(fac)
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147
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148
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149 class RenderFirstSubJobResult(object):
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150 def __init__(self, path):
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151 self.path = path
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152 self.errors = None
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153
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154
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155 class BakeJobPayload(object):
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156 def __init__(self, fac, route_metadata, previous_entry,
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157 dirty_source_names, tax_info=None):
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158 self.factory_info = PageFactoryInfo(fac)
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159 self.route_metadata = route_metadata
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160 self.previous_entry = previous_entry
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161 self.dirty_source_names = dirty_source_names
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162 self.taxonomy_info = tax_info
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163
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164
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165 class BakeJobResult(object):
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166 def __init__(self, path, tax_info=None):
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167 self.path = path
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168 self.taxonomy_info = tax_info
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169 self.sub_entries = None
411
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170 self.errors = None
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171
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172
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173 class LoadJobHandler(JobHandler):
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174 def handleJob(self, job):
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175 # Just make sure the page has been cached.
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176 fac = job.payload.factory_info.build(self.app)
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177 logger.debug("Loading page: %s" % fac.ref_spec)
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178 result = LoadJobResult(fac.source.name, fac.path)
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179 try:
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180 page = fac.buildPage()
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181 page._load()
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182 result.config = page.config.get()
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183 except Exception as ex:
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184 logger.debug("Got loading error. Sending it to master.")
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185 result.errors = _get_errors(ex)
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186 if self.ctx.debug:
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187 logger.exception(ex)
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188
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189 self.ctx.results.put_nowait(result)
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190
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191
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192 class RenderFirstSubJobHandler(JobHandler):
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193 def handleJob(self, job):
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194 # Render the segments for the first sub-page of this page.
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195 fac = job.payload.factory_info.build(self.app)
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196
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197 # These things should be OK as they're checked upstream by the baker.
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198 route = self.app.getRoute(fac.source.name, fac.metadata,
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199 skip_taxonomies=True)
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200 assert route is not None
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201
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202 page = fac.buildPage()
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203 route_metadata = copy.deepcopy(fac.metadata)
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204 qp = QualifiedPage(page, route, route_metadata)
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205 ctx = PageRenderingContext(qp)
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diff changeset
206
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207 result = RenderFirstSubJobResult(fac.path)
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208 logger.debug("Preparing page: %s" % fac.ref_spec)
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diff changeset
209 try:
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210 render_page_segments(ctx)
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211 except Exception as ex:
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212 logger.debug("Got rendering error. Sending it to master.")
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213 result.errors = _get_errors(ex)
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diff changeset
214 if self.ctx.debug:
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215 logger.exception(ex)
411
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216
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217 self.ctx.results.put_nowait(result)
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218
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219
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220 class BakeJobHandler(JobHandler):
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221 def __init__(self, app, ctx):
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222 super(BakeJobHandler, self).__init__(app, ctx)
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223 self.page_baker = PageBaker(app, ctx.out_dir, ctx.force)
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224
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225 def handleJob(self, job):
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226 # Actually bake the page and all its sub-pages to the output folder.
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227 fac = job.payload.factory_info.build(self.app)
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228
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229 route_metadata = job.payload.route_metadata
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230 tax_info = job.payload.taxonomy_info
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diff changeset
231 if tax_info is not None:
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232 route = self.app.getTaxonomyRoute(tax_info.taxonomy_name,
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diff changeset
233 tax_info.source_name)
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234 else:
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235 route = self.app.getRoute(fac.source.name, route_metadata,
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diff changeset
236 skip_taxonomies=True)
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diff changeset
237 assert route is not None
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238
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239 result = BakeJobResult(fac.path, tax_info)
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240 previous_entry = job.payload.previous_entry
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241 dirty_source_names = job.payload.dirty_source_names
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diff changeset
242 logger.debug("Baking page: %s" % fac.ref_spec)
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diff changeset
243 try:
415
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diff changeset
244 sub_entries = self.page_baker.bake(
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diff changeset
245 fac, route, route_metadata, previous_entry,
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Ludovic Chabant <ludovic@chabant.com>
parents: 411
diff changeset
246 dirty_source_names, tax_info)
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diff changeset
247 result.sub_entries = sub_entries
411
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248
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diff changeset
249 except BakingError as ex:
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250 logger.debug("Got baking error. Sending it to master.")
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diff changeset
251 result.errors = _get_errors(ex)
415
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Ludovic Chabant <ludovic@chabant.com>
parents: 411
diff changeset
252 if self.ctx.debug:
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Ludovic Chabant <ludovic@chabant.com>
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diff changeset
253 logger.exception(ex)
411
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
254
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diff changeset
255 self.ctx.results.put_nowait(result)
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
256