Mercurial > piecrust2

annotate piecrust/processing/base.py @ 213:e34a6826a3d4

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internal: Remove the (unused) `new_only` flag for pipeline processing.
author Ludovic Chabant <ludovic@chabant.com>
date Sat, 31 Jan 2015 15:33:18 -0800
parents 989d0abd7c17
children a47580a0955b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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3
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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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133845647083 Better error management and removal support in baking/processing.
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6 import hashlib
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7 import threading
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474c9882decf Upgrade to Python 3.
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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, ProcessingTreeError,
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15 STATE_DIRTY,
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16 print_node, get_node_name_tree)
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18
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19 logger = logging.getLogger(__name__)
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20
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21
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22 PRIORITY_FIRST = -1
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23 PRIORITY_NORMAL = 0
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24 PRIORITY_LAST = 1
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25
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27 split_processor_names_re = re.compile(r'[ ,]+')
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28
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29
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30 class Processor(object):
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31 PROCESSOR_NAME = None
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32
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33 def __init__(self):
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34 self.priority = PRIORITY_NORMAL
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35 self.is_bypassing_structured_processing = False
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36 self.is_delegating_dependency_check = True
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37
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38 def initialize(self, app):
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39 self.app = app
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40
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41 def onPipelineStart(self, pipeline):
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42 pass
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43
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44 def onPipelineEnd(self, pipeline):
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45 pass
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46
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47 def matches(self, path):
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48 return False
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49
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50 def getDependencies(self, path):
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51 return None
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52
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53 def getOutputFilenames(self, filename):
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54 return None
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55
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56 def process(self, path, out_dir):
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57 pass
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59
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60 class CopyFileProcessor(Processor):
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61 PROCESSOR_NAME = 'copy'
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62
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63 def __init__(self):
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64 super(CopyFileProcessor, self).__init__()
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65 self.priority = PRIORITY_LAST
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66
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67 def matches(self, path):
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68 return True
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69
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70 def getOutputFilenames(self, filename):
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71 return [filename]
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72
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73 def process(self, path, out_dir):
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74 out_path = os.path.join(out_dir, os.path.basename(path))
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75 logger.debug("Copying: %s -> %s" % (path, out_path))
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76 shutil.copyfile(path, out_path)
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77 return True
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79
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80 class SimpleFileProcessor(Processor):
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81 def __init__(self, extensions=None):
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82 super(SimpleFileProcessor, self).__init__()
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83 self.extensions = extensions or {}
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84
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85 def matches(self, path):
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86 for ext in self.extensions:
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87 if path.endswith('.' + ext):
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88 return True
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89 return False
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90
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91 def getOutputFilenames(self, filename):
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92 basename, ext = os.path.splitext(filename)
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93 ext = ext.lstrip('.')
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94 out_ext = self.extensions[ext]
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95 return ['%s.%s' % (basename, out_ext)]
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96
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97 def process(self, path, out_dir):
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98 _, in_name = os.path.split(path)
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99 out_name = self.getOutputFilenames(in_name)[0]
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100 out_path = os.path.join(out_dir, out_name)
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101 return self._doProcess(path, out_path)
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102
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103 def _doProcess(self, in_path, out_path):
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104 raise NotImplementedError()
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105
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106
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107 class ProcessingContext(object):
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108 def __init__(self, base_dir, mount_info, job_queue, record=None):
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109 self.base_dir = base_dir
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110 self.mount_info = mount_info
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111 self.job_queue = job_queue
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112 self.record = record
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113
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114
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115 class ProcessorPipeline(object):
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116 def __init__(self, app, out_dir, force=False):
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117 assert app and out_dir
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118 self.app = app
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119 self.out_dir = out_dir
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120 self.force = force
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121
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122 tmp_dir = app.cache_dir
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123 if not tmp_dir:
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124 import tempfile
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125 tmp_dir = os.path.join(tempfile.gettempdir(), 'piecrust')
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126 self.tmp_dir = os.path.join(tmp_dir, 'proc')
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127
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128 baker_params = app.config.get('baker') or {}
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129
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130 assets_dirs = baker_params.get('assets_dirs', app.assets_dirs)
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131 self.mounts = make_mount_infos(assets_dirs, self.app.root_dir)
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133 self.num_workers = baker_params.get('workers', 4)
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134
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135 ignores = baker_params.get('ignore', [])
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diff changeset
136 ignores += [
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diff changeset
137 '_cache', '_counter',
3
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138 'theme_info.yml',
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139 '.DS_Store', 'Thumbs.db',
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140 '.git*', '.hg*', '.svn']
205
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diff changeset
141 self.skip_patterns = make_re(ignores)
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diff changeset
142 self.force_patterns = make_re(baker_params.get('force', []))
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143
205
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diff changeset
144 self.processors = app.plugin_loader.getProcessors()
3
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145
196
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diff changeset
146 def addSkipPatterns(self, patterns):
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147 self.skip_patterns += make_re(patterns)
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148
35
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diff changeset
149 def filterProcessors(self, authorized_names):
205
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150 self.processors = self.getFilteredProcessors(authorized_names)
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151
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diff changeset
152 def getFilteredProcessors(self, authorized_names):
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153 if not authorized_names or authorized_names == 'all':
201
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154 return self.processors
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155
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diff changeset
156 if isinstance(authorized_names, str):
203
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157 authorized_names = split_processor_names_re.split(authorized_names)
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158
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159 procs = []
205
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160 has_star = 'all' in authorized_names
203
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161 for p in self.processors:
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162 for name in authorized_names:
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163 if name == p.PROCESSOR_NAME:
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164 procs.append(p)
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165 break
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166 if name == ('-%s' % p.PROCESSOR_NAME):
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167 break
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168 else:
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169 if has_star:
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170 procs.append(p)
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171 return procs
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172
133
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173 def run(self, src_dir_or_file=None, *,
213
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174 delete=True, previous_record=None, save_record=True):
117
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175 # Invoke pre-processors.
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176 for proc in self.processors:
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177 proc.onPipelineStart(self)
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178
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179 # Sort our processors again in case the pre-process step involved
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180 # patching the processors with some new ones.
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181 self.processors.sort(key=lambda p: p.priority)
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182
120
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183 # Create the pipeline record.
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184 record = TransitionalProcessorPipelineRecord()
133
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185 record_cache = self.app.cache.getCache('proc')
120
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186 record_name = (
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diff changeset
187 hashlib.md5(self.out_dir.encode('utf8')).hexdigest() +
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188 '.record')
133
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189 if previous_record:
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190 record.setPrevious(previous_record)
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191 elif not self.force and record_cache.has(record_name):
120
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diff changeset
192 t = time.clock()
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193 record.loadPrevious(record_cache.getCachePath(record_name))
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diff changeset
194 logger.debug(format_timed(t, 'loaded previous bake record',
133
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diff changeset
195 colored=False))
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196 logger.debug("Got %d entries in process record." %
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diff changeset
197 len(record.previous.entries))
120
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diff changeset
198
3
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199 # Create the workers.
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200 pool = []
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201 queue = Queue()
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202 abort = threading.Event()
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203 pipeline_lock = threading.Lock()
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204 for i in range(self.num_workers):
120
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diff changeset
205 ctx = ProcessingWorkerContext(self, record,
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diff changeset
206 queue, abort, pipeline_lock)
3
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diff changeset
207 worker = ProcessingWorker(i, ctx)
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diff changeset
208 worker.start()
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diff changeset
209 pool.append(worker)
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210
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211 if src_dir_or_file is not None:
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212 # Process only the given path.
36
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diff changeset
213 # Find out what mount point this is in.
208
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parents: 207
diff changeset
214 for name, info in self.mounts.items():
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parents: 207
diff changeset
215 path = info['path']
3
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diff changeset
216 if src_dir_or_file[:len(path)] == path:
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diff changeset
217 base_dir = path
201
0c9de41689bb processing: Add ability to specify processors per mount.
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parents: 196
diff changeset
218 mount_info = info
36
485682a6de50 New site layout support.
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parents: 35
diff changeset
219 break
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parents: 35
diff changeset
220 else:
208
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parents: 207
diff changeset
221 known_roots = [i['path'] for i in self.mounts.values()]
36
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diff changeset
222 raise Exception("Input path '%s' is not part of any known "
485682a6de50 New site layout support.
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diff changeset
223 "mount point: %s" %
208
989d0abd7c17 processing: Use the correct full path for mounts.
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parents: 207
diff changeset
224 (src_dir_or_file, known_roots))
3
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diff changeset
225
201
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diff changeset
226 ctx = ProcessingContext(base_dir, mount_info, queue, record)
3
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parents:
diff changeset
227 logger.debug("Initiating processing pipeline on: %s" % src_dir_or_file)
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diff changeset
228 if os.path.isdir(src_dir_or_file):
213
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parents: 208
diff changeset
229 self.processDirectory(ctx, src_dir_or_file)
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diff changeset
230 elif os.path.isfile(src_dir_or_file):
213
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parents: 208
diff changeset
231 self.processFile(ctx, src_dir_or_file)
3
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232
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233 else:
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234 # Process everything.
208
989d0abd7c17 processing: Use the correct full path for mounts.
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parents: 207
diff changeset
235 for name, info in self.mounts.items():
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parents: 207
diff changeset
236 path = info['path']
201
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parents: 196
diff changeset
237 ctx = ProcessingContext(path, info, queue, record)
3
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diff changeset
238 logger.debug("Initiating processing pipeline on: %s" % path)
213
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parents: 208
diff changeset
239 self.processDirectory(ctx, path)
3
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240
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diff changeset
241 # Wait on all workers.
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diff changeset
242 for w in pool:
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diff changeset
243 w.join()
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diff changeset
244 if abort.is_set():
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diff changeset
245 raise Exception("Worker pool was aborted.")
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diff changeset
246
120
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diff changeset
247 # Handle deletions.
213
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parents: 208
diff changeset
248 if delete:
129
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parents: 126
diff changeset
249 for path, reason in record.getDeletions():
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parents: 126
diff changeset
250 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
251 try:
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parents: 205
diff changeset
252 os.remove(path)
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parents: 205
diff changeset
253 except FileNotFoundError:
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diff changeset
254 pass
129
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diff changeset
255 logger.info('[delete] %s' % path)
120
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parents: 117
diff changeset
256
3
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diff changeset
257 # Invoke post-processors.
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parents:
diff changeset
258 for proc in self.processors:
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parents:
diff changeset
259 proc.onPipelineEnd(self)
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parents:
diff changeset
260
133
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diff changeset
261 # Finalize the process record.
120
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diff changeset
262 record.current.process_time = time.time()
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diff changeset
263 record.current.out_dir = self.out_dir
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diff changeset
264 record.collapseRecords()
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diff changeset
265
133
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diff changeset
266 # Save the process record.
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diff changeset
267 if save_record:
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parents: 129
diff changeset
268 t = time.clock()
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diff changeset
269 record.saveCurrent(record_cache.getCachePath(record_name))
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270 logger.debug(format_timed(t, 'saved bake record', colored=False))
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271
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272 return record.detach()
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273
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274 def processDirectory(self, ctx, start_dir):
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275 for dirpath, dirnames, filenames in os.walk(start_dir):
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276 rel_dirpath = os.path.relpath(dirpath, start_dir)
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277 dirnames[:] = [d for d in dirnames
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278 if not re_matchany(d, self.skip_patterns, rel_dirpath)]
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279
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280 for filename in filenames:
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281 if re_matchany(filename, self.skip_patterns, rel_dirpath):
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282 continue
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283 self.processFile(ctx, os.path.join(dirpath, filename))
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284
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285 def processFile(self, ctx, path):
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286 logger.debug("Queuing: %s" % path)
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287 job = ProcessingWorkerJob(ctx.base_dir, ctx.mount_info, path)
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288 ctx.job_queue.put_nowait(job)
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289
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290
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291 class ProcessingWorkerContext(object):
120
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292 def __init__(self, pipeline, record,
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293 work_queue, abort_event, pipeline_lock):
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294 self.pipeline = pipeline
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295 self.record = record
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296 self.work_queue = work_queue
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297 self.abort_event = abort_event
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298 self.pipeline_lock = pipeline_lock
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299
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300
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301 class ProcessingWorkerJob(object):
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302 def __init__(self, base_dir, mount_info, path):
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303 self.base_dir = base_dir
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304 self.mount_info = mount_info
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305 self.path = path
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306
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307
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308 class ProcessingWorker(threading.Thread):
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309 def __init__(self, wid, ctx):
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310 super(ProcessingWorker, self).__init__()
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311 self.wid = wid
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312 self.ctx = ctx
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313
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314 def run(self):
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315 while(not self.ctx.abort_event.is_set()):
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316 try:
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317 job = self.ctx.work_queue.get(True, 0.1)
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318 except Empty:
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319 logger.debug("[%d] No more work... shutting down." % self.wid)
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320 break
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321
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322 try:
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323 self._unsafeRun(job)
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324 logger.debug("[%d] Done with file." % self.wid)
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325 self.ctx.work_queue.task_done()
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326 except Exception as ex:
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327 self.ctx.abort_event.set()
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328 logger.error("[%d] Critical error, aborting." % self.wid)
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329 logger.exception(ex)
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330 break
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331
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332 def _unsafeRun(self, job):
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333 start_time = time.clock()
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334 pipeline = self.ctx.pipeline
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335 record = self.ctx.record
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336
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337 rel_path = os.path.relpath(job.path, job.base_dir)
120
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338 previous_entry = record.getPreviousEntry(rel_path)
129
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diff changeset
339
120
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340 record_entry = ProcessorPipelineRecordEntry(job.base_dir, rel_path)
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341 record.addEntry(record_entry)
3
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342
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343 # Figure out if a previously processed file is overriding this one.
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344 # This can happen if a theme file (processed via a mount point)
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345 # is overridden in the user's website.
120
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346 if record.current.hasOverrideEntry(rel_path):
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diff changeset
347 record_entry.flags |= FLAG_OVERRIDEN
3
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348 logger.info(format_timed(start_time,
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349 '%s [not baked, overridden]' % rel_path))
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350 return
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351
205
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diff changeset
352 processors = pipeline.getFilteredProcessors(
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diff changeset
353 job.mount_info['processors'])
120
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diff changeset
354 try:
201
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diff changeset
355 builder = ProcessingTreeBuilder(processors)
120
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diff changeset
356 tree_root = builder.build(rel_path)
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357 except ProcessingTreeError as ex:
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358 record_entry.errors.append(str(ex))
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359 logger.error("Error processing %s: %s" % (rel_path, ex))
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diff changeset
360 return
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diff changeset
361
3
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362 print_node(tree_root, recursive=True)
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diff changeset
363 leaves = tree_root.getLeaves()
120
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diff changeset
364 record_entry.rel_outputs = [l.path for l in leaves]
191
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diff changeset
365 record_entry.proc_tree = get_node_name_tree(tree_root)
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diff changeset
366 if tree_root.getProcessor().is_bypassing_structured_processing:
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diff changeset
367 record_entry.flags |= FLAG_BYPASSED_STRUCTURED_PROCESSING
3
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368
120
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diff changeset
369 force = (pipeline.force or previous_entry is None or
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diff changeset
370 not previous_entry.was_processed_successfully)
3
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371 if not force:
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372 force = re_matchany(rel_path, pipeline.force_patterns)
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373
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374 if force:
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375 tree_root.setState(STATE_DIRTY, True)
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376
120
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diff changeset
377 try:
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diff changeset
378 runner = ProcessingTreeRunner(
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diff changeset
379 job.base_dir, pipeline.tmp_dir,
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diff changeset
380 pipeline.out_dir, self.ctx.pipeline_lock)
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diff changeset
381 if runner.processSubTree(tree_root):
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diff changeset
382 record_entry.flags |= FLAG_PROCESSED
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diff changeset
383 logger.info(format_timed(start_time, "[%d] %s" % (self.wid, rel_path)))
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diff changeset
384 except ProcessingTreeError as ex:
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385 record_entry.errors.append(str(ex))
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diff changeset
386 logger.error("Error processing %s: %s" % (rel_path, ex))
3
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387
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388
208
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diff changeset
389 def make_mount_infos(mounts, root_dir):
201
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diff changeset
390 if isinstance(mounts, list):
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diff changeset
391 mounts = {m: {} for m in mounts}
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diff changeset
392
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diff changeset
393 for name, info in mounts.items():
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diff changeset
394 if not isinstance(info, dict):
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diff changeset
395 raise Exception("Asset directory info for '%s' is not a "
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diff changeset
396 "dictionary." % name)
205
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diff changeset
397 info.setdefault('processors', 'all -uglifyjs -cleancss')
208
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diff changeset
398 info['path'] = os.path.join(root_dir, name)
201
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diff changeset
399
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diff changeset
400 return mounts
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401
0c9de41689bb processing: Add ability to specify processors per mount.
Ludovic Chabant <ludovic@chabant.com>
parents: 196
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402
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
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403 def make_re(patterns):
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404 re_patterns = []
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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405 for pat in patterns:
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Ludovic Chabant <ludovic@chabant.com>
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406 if pat[0] == '/' and pat[-1] == '/' and len(pat) > 2:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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407 re_patterns.append(pat[1:-1])
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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408 else:
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Ludovic Chabant <ludovic@chabant.com>
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409 escaped_pat = (re.escape(pat)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
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410 .replace(r'\*', r'[^/\\]*')
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411 .replace(r'\?', r'[^/\\]'))
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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412 re_patterns.append(escaped_pat)
5
474c9882decf Upgrade to Python 3.
Ludovic Chabant <ludovic@chabant.com>
parents: 3
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413 return [re.compile(p) for p in re_patterns]
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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414
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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415
35
e4c345dcf33c More unit tests, fix a bug with the skip patterns.
Ludovic Chabant <ludovic@chabant.com>
parents: 22
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416 def re_matchany(filename, patterns, dirname=None):
e4c345dcf33c More unit tests, fix a bug with the skip patterns.
Ludovic Chabant <ludovic@chabant.com>
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417 if dirname and dirname != '.':
e4c345dcf33c More unit tests, fix a bug with the skip patterns.
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418 filename = os.path.join(dirname, filename)
e4c345dcf33c More unit tests, fix a bug with the skip patterns.
Ludovic Chabant <ludovic@chabant.com>
parents: 22
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419
11
617191dec18e Fixes for Windows, make `findPagePath` return a ref path.
Ludovic Chabant <ludovic@chabant.com>
parents: 5
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420 # skip patterns use a forward slash regardless of the platform.
617191dec18e Fixes for Windows, make `findPagePath` return a ref path.
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421 filename = filename.replace('\\', '/')
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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422 for pattern in patterns:
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df790a827d38 Correctly match skip patterns.
Ludovic Chabant <ludovic@chabant.com>
parents: 11
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423 if pattern.search(filename):
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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424 return True
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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425 return False
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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426