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annotate piecrust/processing/base.py @ 216:c5ada46b281a

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internal: Bump the processing record version.
author Ludovic Chabant <ludovic@chabant.com>
date Sat, 31 Jan 2015 17:33:02 -0800
parents a47580a0955b
children f82262f59600
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1 import re
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2 import time
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3 import shutil
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4 import os.path
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5 import logging
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6 import hashlib
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7 import threading
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8 from queue import Queue, Empty
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9 from piecrust.chefutil import format_timed
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10 from piecrust.processing.records import (
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11 ProcessorPipelineRecordEntry, TransitionalProcessorPipelineRecord,
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12 FLAG_PROCESSED, FLAG_OVERRIDEN, FLAG_BYPASSED_STRUCTURED_PROCESSING)
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13 from piecrust.processing.tree import (
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14 ProcessingTreeBuilder, ProcessingTreeRunner,
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15 ProcessingTreeError, ProcessorError,
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16 STATE_DIRTY,
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17 print_node, get_node_name_tree)
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20 logger = logging.getLogger(__name__)
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23 PRIORITY_FIRST = -1
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24 PRIORITY_NORMAL = 0
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25 PRIORITY_LAST = 1
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28 split_processor_names_re = re.compile(r'[ ,]+')
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30
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31 class Processor(object):
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32 PROCESSOR_NAME = None
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33
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34 def __init__(self):
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35 self.priority = PRIORITY_NORMAL
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36 self.is_bypassing_structured_processing = False
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37 self.is_delegating_dependency_check = True
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38
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39 def initialize(self, app):
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40 self.app = app
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41
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42 def onPipelineStart(self, pipeline):
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43 pass
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44
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45 def onPipelineEnd(self, pipeline):
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46 pass
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47
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48 def matches(self, path):
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49 return False
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50
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51 def getDependencies(self, path):
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52 return None
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53
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54 def getOutputFilenames(self, filename):
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55 return None
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56
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57 def process(self, path, out_dir):
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58 pass
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60
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61 class CopyFileProcessor(Processor):
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62 PROCESSOR_NAME = 'copy'
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63
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64 def __init__(self):
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65 super(CopyFileProcessor, self).__init__()
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66 self.priority = PRIORITY_LAST
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67
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68 def matches(self, path):
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69 return True
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70
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71 def getOutputFilenames(self, filename):
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72 return [filename]
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73
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74 def process(self, path, out_dir):
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75 out_path = os.path.join(out_dir, os.path.basename(path))
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76 logger.debug("Copying: %s -> %s" % (path, out_path))
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77 shutil.copyfile(path, out_path)
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78 return True
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80
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81 class SimpleFileProcessor(Processor):
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82 def __init__(self, extensions=None):
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83 super(SimpleFileProcessor, self).__init__()
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84 self.extensions = extensions or {}
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85
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86 def matches(self, path):
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87 for ext in self.extensions:
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88 if path.endswith('.' + ext):
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89 return True
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90 return False
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91
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92 def getOutputFilenames(self, filename):
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93 basename, ext = os.path.splitext(filename)
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94 ext = ext.lstrip('.')
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95 out_ext = self.extensions[ext]
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96 return ['%s.%s' % (basename, out_ext)]
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97
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98 def process(self, path, out_dir):
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99 _, in_name = os.path.split(path)
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100 out_name = self.getOutputFilenames(in_name)[0]
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101 out_path = os.path.join(out_dir, out_name)
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102 return self._doProcess(path, out_path)
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103
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104 def _doProcess(self, in_path, out_path):
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105 raise NotImplementedError()
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106
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107
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108 class ProcessingContext(object):
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109 def __init__(self, base_dir, mount_info, job_queue, record=None):
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110 self.base_dir = base_dir
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111 self.mount_info = mount_info
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112 self.job_queue = job_queue
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113 self.record = record
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115
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116 class ProcessorPipeline(object):
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117 def __init__(self, app, out_dir, force=False):
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118 assert app and out_dir
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119 self.app = app
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120 self.out_dir = out_dir
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121 self.force = force
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122
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123 tmp_dir = app.cache_dir
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124 if not tmp_dir:
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125 import tempfile
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126 tmp_dir = os.path.join(tempfile.gettempdir(), 'piecrust')
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127 self.tmp_dir = os.path.join(tmp_dir, 'proc')
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128
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129 baker_params = app.config.get('baker') or {}
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130
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131 assets_dirs = baker_params.get('assets_dirs', app.assets_dirs)
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132 self.mounts = make_mount_infos(assets_dirs, self.app.root_dir)
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134 self.num_workers = baker_params.get('workers', 4)
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diff changeset
136 ignores = baker_params.get('ignore', [])
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diff changeset
137 ignores += [
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diff changeset
138 '_cache', '_counter',
3
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139 'theme_info.yml',
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140 '.DS_Store', 'Thumbs.db',
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141 '.git*', '.hg*', '.svn']
205
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diff changeset
142 self.skip_patterns = make_re(ignores)
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diff changeset
143 self.force_patterns = make_re(baker_params.get('force', []))
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144
205
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145 self.processors = app.plugin_loader.getProcessors()
3
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146
196
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diff changeset
147 def addSkipPatterns(self, patterns):
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diff changeset
148 self.skip_patterns += make_re(patterns)
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diff changeset
149
35
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diff changeset
150 def filterProcessors(self, authorized_names):
205
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151 self.processors = self.getFilteredProcessors(authorized_names)
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152
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153 def getFilteredProcessors(self, authorized_names):
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154 if not authorized_names or authorized_names == 'all':
201
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155 return self.processors
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156
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157 if isinstance(authorized_names, str):
203
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158 authorized_names = split_processor_names_re.split(authorized_names)
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159
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160 procs = []
205
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161 has_star = 'all' in authorized_names
203
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162 for p in self.processors:
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163 for name in authorized_names:
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164 if name == p.PROCESSOR_NAME:
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165 procs.append(p)
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166 break
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167 if name == ('-%s' % p.PROCESSOR_NAME):
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168 break
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169 else:
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170 if has_star:
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171 procs.append(p)
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172 return procs
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173
133
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174 def run(self, src_dir_or_file=None, *,
213
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175 delete=True, previous_record=None, save_record=True):
117
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176 # Invoke pre-processors.
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177 for proc in self.processors:
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178 proc.onPipelineStart(self)
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179
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180 # Sort our processors again in case the pre-process step involved
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181 # patching the processors with some new ones.
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182 self.processors.sort(key=lambda p: p.priority)
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183
120
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184 # Create the pipeline record.
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185 record = TransitionalProcessorPipelineRecord()
133
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diff changeset
186 record_cache = self.app.cache.getCache('proc')
120
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187 record_name = (
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diff changeset
188 hashlib.md5(self.out_dir.encode('utf8')).hexdigest() +
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189 '.record')
133
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190 if previous_record:
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diff changeset
191 record.setPrevious(previous_record)
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diff changeset
192 elif not self.force and record_cache.has(record_name):
120
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diff changeset
193 t = time.clock()
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diff changeset
194 record.loadPrevious(record_cache.getCachePath(record_name))
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diff changeset
195 logger.debug(format_timed(t, 'loaded previous bake record',
133
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diff changeset
196 colored=False))
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diff changeset
197 logger.debug("Got %d entries in process record." %
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diff changeset
198 len(record.previous.entries))
120
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diff changeset
199
3
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200 # Create the workers.
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201 pool = []
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202 queue = Queue()
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diff changeset
203 abort = threading.Event()
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diff changeset
204 pipeline_lock = threading.Lock()
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205 for i in range(self.num_workers):
120
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diff changeset
206 ctx = ProcessingWorkerContext(self, record,
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diff changeset
207 queue, abort, pipeline_lock)
3
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parents:
diff changeset
208 worker = ProcessingWorker(i, ctx)
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parents:
diff changeset
209 worker.start()
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diff changeset
210 pool.append(worker)
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211
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diff changeset
212 if src_dir_or_file is not None:
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213 # Process only the given path.
36
485682a6de50 New site layout support.
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diff changeset
214 # Find out what mount point this is in.
208
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parents: 207
diff changeset
215 for name, info in self.mounts.items():
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parents: 207
diff changeset
216 path = info['path']
3
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diff changeset
217 if src_dir_or_file[:len(path)] == path:
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diff changeset
218 base_dir = path
201
0c9de41689bb processing: Add ability to specify processors per mount.
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parents: 196
diff changeset
219 mount_info = info
36
485682a6de50 New site layout support.
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parents: 35
diff changeset
220 break
485682a6de50 New site layout support.
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parents: 35
diff changeset
221 else:
208
989d0abd7c17 processing: Use the correct full path for mounts.
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parents: 207
diff changeset
222 known_roots = [i['path'] for i in self.mounts.values()]
36
485682a6de50 New site layout support.
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parents: 35
diff changeset
223 raise Exception("Input path '%s' is not part of any known "
485682a6de50 New site layout support.
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parents: 35
diff changeset
224 "mount point: %s" %
208
989d0abd7c17 processing: Use the correct full path for mounts.
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parents: 207
diff changeset
225 (src_dir_or_file, known_roots))
3
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parents:
diff changeset
226
201
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parents: 196
diff changeset
227 ctx = ProcessingContext(base_dir, mount_info, queue, record)
3
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diff changeset
228 logger.debug("Initiating processing pipeline on: %s" % src_dir_or_file)
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parents:
diff changeset
229 if os.path.isdir(src_dir_or_file):
213
e34a6826a3d4 internal: Remove the (unused) `new_only` flag for pipeline processing.
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parents: 208
diff changeset
230 self.processDirectory(ctx, src_dir_or_file)
3
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parents:
diff changeset
231 elif os.path.isfile(src_dir_or_file):
213
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parents: 208
diff changeset
232 self.processFile(ctx, src_dir_or_file)
3
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parents:
diff changeset
233
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diff changeset
234 else:
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diff changeset
235 # Process everything.
208
989d0abd7c17 processing: Use the correct full path for mounts.
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parents: 207
diff changeset
236 for name, info in self.mounts.items():
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parents: 207
diff changeset
237 path = info['path']
201
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parents: 196
diff changeset
238 ctx = ProcessingContext(path, info, queue, record)
3
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diff changeset
239 logger.debug("Initiating processing pipeline on: %s" % path)
213
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diff changeset
240 self.processDirectory(ctx, path)
3
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241
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diff changeset
242 # Wait on all workers.
215
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parents: 213
diff changeset
243 record.current.success = True
3
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diff changeset
244 for w in pool:
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diff changeset
245 w.join()
215
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parents: 213
diff changeset
246 record.current.success &= w.success
3
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parents:
diff changeset
247 if abort.is_set():
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diff changeset
248 raise Exception("Worker pool was aborted.")
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diff changeset
249
120
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diff changeset
250 # Handle deletions.
213
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parents: 208
diff changeset
251 if delete:
129
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parents: 126
diff changeset
252 for path, reason in record.getDeletions():
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parents: 126
diff changeset
253 logger.debug("Removing '%s': %s" % (path, reason))
207
c5330cb35794 processing: Don't fail if an asset we want to remove has already been removed.
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parents: 205
diff changeset
254 try:
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parents: 205
diff changeset
255 os.remove(path)
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parents: 205
diff changeset
256 except FileNotFoundError:
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parents: 205
diff changeset
257 pass
129
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diff changeset
258 logger.info('[delete] %s' % path)
120
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parents: 117
diff changeset
259
3
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diff changeset
260 # Invoke post-processors.
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parents:
diff changeset
261 for proc in self.processors:
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parents:
diff changeset
262 proc.onPipelineEnd(self)
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diff changeset
263
133
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diff changeset
264 # Finalize the process record.
120
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diff changeset
265 record.current.process_time = time.time()
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diff changeset
266 record.current.out_dir = self.out_dir
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diff changeset
267 record.collapseRecords()
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parents: 117
diff changeset
268
133
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269 # Save the process record.
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270 if save_record:
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271 t = time.clock()
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272 record.saveCurrent(record_cache.getCachePath(record_name))
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273 logger.debug(format_timed(t, 'saved bake record', colored=False))
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274
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275 return record.detach()
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276
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277 def processDirectory(self, ctx, start_dir):
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278 for dirpath, dirnames, filenames in os.walk(start_dir):
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279 rel_dirpath = os.path.relpath(dirpath, start_dir)
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280 dirnames[:] = [d for d in dirnames
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281 if not re_matchany(d, self.skip_patterns, rel_dirpath)]
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282
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283 for filename in filenames:
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284 if re_matchany(filename, self.skip_patterns, rel_dirpath):
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285 continue
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286 self.processFile(ctx, os.path.join(dirpath, filename))
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287
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288 def processFile(self, ctx, path):
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289 logger.debug("Queuing: %s" % path)
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290 job = ProcessingWorkerJob(ctx.base_dir, ctx.mount_info, path)
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291 ctx.job_queue.put_nowait(job)
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292
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293
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294 class ProcessingWorkerContext(object):
120
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295 def __init__(self, pipeline, record,
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296 work_queue, abort_event, pipeline_lock):
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297 self.pipeline = pipeline
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298 self.record = record
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299 self.work_queue = work_queue
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300 self.abort_event = abort_event
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301 self.pipeline_lock = pipeline_lock
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302
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303
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304 class ProcessingWorkerJob(object):
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305 def __init__(self, base_dir, mount_info, path):
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306 self.base_dir = base_dir
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307 self.mount_info = mount_info
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308 self.path = path
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309
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310
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311 class ProcessingWorker(threading.Thread):
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312 def __init__(self, wid, ctx):
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313 super(ProcessingWorker, self).__init__()
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314 self.wid = wid
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315 self.ctx = ctx
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316 self.success = True
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317
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318 def run(self):
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319 while(not self.ctx.abort_event.is_set()):
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320 try:
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321 job = self.ctx.work_queue.get(True, 0.1)
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322 except Empty:
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323 logger.debug("[%d] No more work... shutting down." % self.wid)
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324 break
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325
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326 try:
215
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327 success = self._unsafeRun(job)
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328 logger.debug("[%d] Done with file." % self.wid)
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329 self.ctx.work_queue.task_done()
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330 self.success &= success
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331 except Exception as ex:
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332 self.ctx.abort_event.set()
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333 self.success = False
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334 logger.error("[%d] Critical error, aborting." % self.wid)
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335 logger.exception(ex)
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336 break
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337
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338 def _unsafeRun(self, job):
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339 start_time = time.clock()
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340 pipeline = self.ctx.pipeline
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341 record = self.ctx.record
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342
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343 rel_path = os.path.relpath(job.path, job.base_dir)
120
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344 previous_entry = record.getPreviousEntry(rel_path)
129
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diff changeset
345
120
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346 record_entry = ProcessorPipelineRecordEntry(job.base_dir, rel_path)
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347 record.addEntry(record_entry)
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348
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349 # Figure out if a previously processed file is overriding this one.
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350 # This can happen if a theme file (processed via a mount point)
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351 # is overridden in the user's website.
120
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diff changeset
352 if record.current.hasOverrideEntry(rel_path):
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353 record_entry.flags |= FLAG_OVERRIDEN
3
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354 logger.info(format_timed(start_time,
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355 '%s [not baked, overridden]' % rel_path))
215
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diff changeset
356 return True
3
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357
205
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diff changeset
358 processors = pipeline.getFilteredProcessors(
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diff changeset
359 job.mount_info['processors'])
120
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diff changeset
360 try:
201
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diff changeset
361 builder = ProcessingTreeBuilder(processors)
120
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diff changeset
362 tree_root = builder.build(rel_path)
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diff changeset
363 except ProcessingTreeError as ex:
215
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diff changeset
364 msg = str(ex)
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diff changeset
365 logger.error("Error processing %s: %s" % (rel_path, msg))
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diff changeset
366 while ex:
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diff changeset
367 record_entry.errors.append(str(ex))
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diff changeset
368 ex = ex.__cause__
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diff changeset
369 return False
120
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diff changeset
370
3
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371 print_node(tree_root, recursive=True)
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diff changeset
372 leaves = tree_root.getLeaves()
120
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diff changeset
373 record_entry.rel_outputs = [l.path for l in leaves]
191
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diff changeset
374 record_entry.proc_tree = get_node_name_tree(tree_root)
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diff changeset
375 if tree_root.getProcessor().is_bypassing_structured_processing:
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diff changeset
376 record_entry.flags |= FLAG_BYPASSED_STRUCTURED_PROCESSING
3
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377
120
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diff changeset
378 force = (pipeline.force or previous_entry is None or
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diff changeset
379 not previous_entry.was_processed_successfully)
3
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diff changeset
380 if not force:
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381 force = re_matchany(rel_path, pipeline.force_patterns)
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382
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383 if force:
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384 tree_root.setState(STATE_DIRTY, True)
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diff changeset
385
120
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diff changeset
386 try:
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diff changeset
387 runner = ProcessingTreeRunner(
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diff changeset
388 job.base_dir, pipeline.tmp_dir,
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diff changeset
389 pipeline.out_dir, self.ctx.pipeline_lock)
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diff changeset
390 if runner.processSubTree(tree_root):
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diff changeset
391 record_entry.flags |= FLAG_PROCESSED
215
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diff changeset
392 logger.info(format_timed(
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diff changeset
393 start_time, "[%d] %s" % (self.wid, rel_path)))
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diff changeset
394 return True
120
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diff changeset
395 except ProcessingTreeError as ex:
215
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diff changeset
396 msg = str(ex)
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diff changeset
397 if isinstance(ex, ProcessorError):
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diff changeset
398 msg = str(ex.__cause__)
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diff changeset
399 logger.error("Error processing %s: %s" % (rel_path, msg))
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diff changeset
400 while ex:
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401 record_entry.errors.append(str(ex))
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402 ex = ex.__cause__
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403 return False
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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404
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405
208
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406 def make_mount_infos(mounts, root_dir):
201
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407 if isinstance(mounts, list):
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408 mounts = {m: {} for m in mounts}
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409
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410 for name, info in mounts.items():
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411 if not isinstance(info, dict):
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412 raise Exception("Asset directory info for '%s' is not a "
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413 "dictionary." % name)
205
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414 info.setdefault('processors', 'all -uglifyjs -cleancss')
208
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415 info['path'] = os.path.join(root_dir, name)
201
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416
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417 return mounts
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418
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419
3
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420 def make_re(patterns):
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421 re_patterns = []
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422 for pat in patterns:
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423 if pat[0] == '/' and pat[-1] == '/' and len(pat) > 2:
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424 re_patterns.append(pat[1:-1])
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425 else:
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426 escaped_pat = (re.escape(pat)
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427 .replace(r'\*', r'[^/\\]*')
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428 .replace(r'\?', r'[^/\\]'))
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429 re_patterns.append(escaped_pat)
5
474c9882decf Upgrade to Python 3.
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430 return [re.compile(p) for p in re_patterns]
3
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parents:
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431
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parents:
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432
35
e4c345dcf33c More unit tests, fix a bug with the skip patterns.
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433 def re_matchany(filename, patterns, dirname=None):
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434 if dirname and dirname != '.':
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435 filename = os.path.join(dirname, filename)
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parents: 22
diff changeset
436
11
617191dec18e Fixes for Windows, make `findPagePath` return a ref path.
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437 # skip patterns use a forward slash regardless of the platform.
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diff changeset
438 filename = filename.replace('\\', '/')
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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439 for pattern in patterns:
22
df790a827d38 Correctly match skip patterns.
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diff changeset
440 if pattern.search(filename):
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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441 return True
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442 return False
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parents:
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443