Mercurial > piecrust2

annotate piecrust/processing/base.py @ 277:37fb2d65d87e

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author Ludovic Chabant <ludovic@chabant.com>
date Sun, 01 Mar 2015 18:00:55 -0800
parents f82262f59600
children c2ca72fb7f0b
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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_PREPARED, FLAG_PROCESSED, FLAG_OVERRIDEN,
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13 FLAG_BYPASSED_STRUCTURED_PROCESSING)
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14 from piecrust.processing.tree import (
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15 ProcessingTreeBuilder, ProcessingTreeRunner,
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16 ProcessingTreeError, ProcessorError,
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17 STATE_DIRTY,
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18 print_node, get_node_name_tree)
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21 logger = logging.getLogger(__name__)
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23
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24 re_ansicolors = re.compile('\033\\[\d+m')
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26
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27 PRIORITY_FIRST = -1
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28 PRIORITY_NORMAL = 0
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29 PRIORITY_LAST = 1
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32 split_processor_names_re = re.compile(r'[ ,]+')
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34
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35 class Processor(object):
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36 PROCESSOR_NAME = None
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37
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38 def __init__(self):
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39 self.priority = PRIORITY_NORMAL
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40 self.is_bypassing_structured_processing = False
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41 self.is_delegating_dependency_check = True
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42
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43 def initialize(self, app):
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44 self.app = app
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45
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46 def onPipelineStart(self, pipeline):
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47 pass
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48
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49 def onPipelineEnd(self, pipeline):
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50 pass
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51
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52 def matches(self, path):
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53 return False
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54
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55 def getDependencies(self, path):
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56 return None
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57
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58 def getOutputFilenames(self, filename):
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59 return None
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60
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61 def process(self, path, out_dir):
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62 pass
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64
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65 class CopyFileProcessor(Processor):
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66 PROCESSOR_NAME = 'copy'
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67
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68 def __init__(self):
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69 super(CopyFileProcessor, self).__init__()
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70 self.priority = PRIORITY_LAST
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71
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72 def matches(self, path):
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73 return True
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74
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75 def getOutputFilenames(self, filename):
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76 return [filename]
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77
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78 def process(self, path, out_dir):
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79 out_path = os.path.join(out_dir, os.path.basename(path))
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80 logger.debug("Copying: %s -> %s" % (path, out_path))
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81 shutil.copyfile(path, out_path)
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82 return True
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83
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84
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85 class SimpleFileProcessor(Processor):
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86 def __init__(self, extensions=None):
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87 super(SimpleFileProcessor, self).__init__()
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88 self.extensions = extensions or {}
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89
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90 def matches(self, path):
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91 for ext in self.extensions:
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92 if path.endswith('.' + ext):
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93 return True
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94 return False
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95
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96 def getOutputFilenames(self, filename):
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97 basename, ext = os.path.splitext(filename)
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98 ext = ext.lstrip('.')
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99 out_ext = self.extensions[ext]
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100 return ['%s.%s' % (basename, out_ext)]
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101
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102 def process(self, path, out_dir):
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103 _, in_name = os.path.split(path)
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104 out_name = self.getOutputFilenames(in_name)[0]
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105 out_path = os.path.join(out_dir, out_name)
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106 return self._doProcess(path, out_path)
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107
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108 def _doProcess(self, in_path, out_path):
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109 raise NotImplementedError()
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110
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111
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112 class ExternalProcessException(Exception):
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113 def __init__(self, stderr_data):
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114 self.stderr_data = stderr_data
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115
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116 def __str__(self):
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117 return self.stderr_data
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118
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119
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120 class ProcessingContext(object):
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121 def __init__(self, base_dir, mount_info, job_queue, record=None):
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122 self.base_dir = base_dir
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123 self.mount_info = mount_info
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124 self.job_queue = job_queue
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125 self.record = record
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127
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128 class ProcessorPipeline(object):
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129 def __init__(self, app, out_dir, force=False):
126
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130 assert app and out_dir
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131 self.app = app
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132 self.out_dir = out_dir
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133 self.force = force
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134
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135 tmp_dir = app.cache_dir
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136 if not tmp_dir:
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137 import tempfile
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138 tmp_dir = os.path.join(tempfile.gettempdir(), 'piecrust')
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139 self.tmp_dir = os.path.join(tmp_dir, 'proc')
205
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140
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141 baker_params = app.config.get('baker') or {}
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142
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143 assets_dirs = baker_params.get('assets_dirs', app.assets_dirs)
208
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144 self.mounts = make_mount_infos(assets_dirs, self.app.root_dir)
3
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145
205
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146 self.num_workers = baker_params.get('workers', 4)
201
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147
205
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148 ignores = baker_params.get('ignore', [])
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149 ignores += [
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150 '_cache', '_counter',
3
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151 'theme_info.yml',
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152 '.DS_Store', 'Thumbs.db',
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153 '.git*', '.hg*', '.svn']
205
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154 self.skip_patterns = make_re(ignores)
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155 self.force_patterns = make_re(baker_params.get('force', []))
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156
205
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157 self.processors = app.plugin_loader.getProcessors()
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158
196
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159 def addSkipPatterns(self, patterns):
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160 self.skip_patterns += make_re(patterns)
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161
35
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162 def filterProcessors(self, authorized_names):
205
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163 self.processors = self.getFilteredProcessors(authorized_names)
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164
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165 def getFilteredProcessors(self, authorized_names):
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166 if not authorized_names or authorized_names == 'all':
201
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167 return self.processors
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168
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169 if isinstance(authorized_names, str):
203
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170 authorized_names = split_processor_names_re.split(authorized_names)
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171
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172 procs = []
205
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173 has_star = 'all' in authorized_names
203
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174 for p in self.processors:
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175 for name in authorized_names:
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176 if name == p.PROCESSOR_NAME:
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177 procs.append(p)
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178 break
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179 if name == ('-%s' % p.PROCESSOR_NAME):
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180 break
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181 else:
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182 if has_star:
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183 procs.append(p)
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184 return procs
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185
133
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diff changeset
186 def run(self, src_dir_or_file=None, *,
213
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diff changeset
187 delete=True, previous_record=None, save_record=True):
117
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188 # Invoke pre-processors.
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189 for proc in self.processors:
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diff changeset
190 proc.onPipelineStart(self)
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191
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192 # Sort our processors again in case the pre-process step involved
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193 # patching the processors with some new ones.
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194 self.processors.sort(key=lambda p: p.priority)
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195
120
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196 # Create the pipeline record.
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197 record = TransitionalProcessorPipelineRecord()
133
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diff changeset
198 record_cache = self.app.cache.getCache('proc')
120
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diff changeset
199 record_name = (
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diff changeset
200 hashlib.md5(self.out_dir.encode('utf8')).hexdigest() +
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diff changeset
201 '.record')
133
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diff changeset
202 if previous_record:
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diff changeset
203 record.setPrevious(previous_record)
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diff changeset
204 elif not self.force and record_cache.has(record_name):
120
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diff changeset
205 t = time.clock()
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diff changeset
206 record.loadPrevious(record_cache.getCachePath(record_name))
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diff changeset
207 logger.debug(format_timed(t, 'loaded previous bake record',
133
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diff changeset
208 colored=False))
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diff changeset
209 logger.debug("Got %d entries in process record." %
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diff changeset
210 len(record.previous.entries))
120
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diff changeset
211
3
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212 # Create the workers.
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diff changeset
213 pool = []
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diff changeset
214 queue = Queue()
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diff changeset
215 abort = threading.Event()
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diff changeset
216 pipeline_lock = threading.Lock()
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diff changeset
217 for i in range(self.num_workers):
120
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diff changeset
218 ctx = ProcessingWorkerContext(self, record,
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diff changeset
219 queue, abort, pipeline_lock)
3
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diff changeset
220 worker = ProcessingWorker(i, ctx)
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diff changeset
221 worker.start()
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diff changeset
222 pool.append(worker)
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diff changeset
223
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224 if src_dir_or_file is not None:
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225 # Process only the given path.
36
485682a6de50 New site layout support.
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diff changeset
226 # Find out what mount point this is in.
208
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parents: 207
diff changeset
227 for name, info in self.mounts.items():
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parents: 207
diff changeset
228 path = info['path']
3
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diff changeset
229 if src_dir_or_file[:len(path)] == path:
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diff changeset
230 base_dir = path
201
0c9de41689bb processing: Add ability to specify processors per mount.
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parents: 196
diff changeset
231 mount_info = info
36
485682a6de50 New site layout support.
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parents: 35
diff changeset
232 break
485682a6de50 New site layout support.
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parents: 35
diff changeset
233 else:
208
989d0abd7c17 processing: Use the correct full path for mounts.
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parents: 207
diff changeset
234 known_roots = [i['path'] for i in self.mounts.values()]
36
485682a6de50 New site layout support.
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parents: 35
diff changeset
235 raise Exception("Input path '%s' is not part of any known "
485682a6de50 New site layout support.
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parents: 35
diff changeset
236 "mount point: %s" %
208
989d0abd7c17 processing: Use the correct full path for mounts.
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parents: 207
diff changeset
237 (src_dir_or_file, known_roots))
3
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diff changeset
238
201
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parents: 196
diff changeset
239 ctx = ProcessingContext(base_dir, mount_info, queue, record)
3
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diff changeset
240 logger.debug("Initiating processing pipeline on: %s" % src_dir_or_file)
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parents:
diff changeset
241 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
242 self.processDirectory(ctx, src_dir_or_file)
3
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parents:
diff changeset
243 elif os.path.isfile(src_dir_or_file):
213
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parents: 208
diff changeset
244 self.processFile(ctx, src_dir_or_file)
3
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parents:
diff changeset
245
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diff changeset
246 else:
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parents:
diff changeset
247 # Process everything.
208
989d0abd7c17 processing: Use the correct full path for mounts.
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parents: 207
diff changeset
248 for name, info in self.mounts.items():
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diff changeset
249 path = info['path']
201
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parents: 196
diff changeset
250 ctx = ProcessingContext(path, info, queue, record)
3
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diff changeset
251 logger.debug("Initiating processing pipeline on: %s" % path)
213
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diff changeset
252 self.processDirectory(ctx, path)
3
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diff changeset
253
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diff changeset
254 # Wait on all workers.
215
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parents: 213
diff changeset
255 record.current.success = True
3
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parents:
diff changeset
256 for w in pool:
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parents:
diff changeset
257 w.join()
215
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parents: 213
diff changeset
258 record.current.success &= w.success
3
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parents:
diff changeset
259 if abort.is_set():
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parents:
diff changeset
260 raise Exception("Worker pool was aborted.")
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parents:
diff changeset
261
120
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diff changeset
262 # Handle deletions.
213
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parents: 208
diff changeset
263 if delete:
129
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parents: 126
diff changeset
264 for path, reason in record.getDeletions():
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parents: 126
diff changeset
265 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
266 try:
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parents: 205
diff changeset
267 os.remove(path)
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parents: 205
diff changeset
268 except FileNotFoundError:
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269 pass
129
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270 logger.info('[delete] %s' % path)
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271
3
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272 # Invoke post-processors.
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273 for proc in self.processors:
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274 proc.onPipelineEnd(self)
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275
133
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276 # Finalize the process record.
120
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277 record.current.process_time = time.time()
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278 record.current.out_dir = self.out_dir
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279 record.collapseRecords()
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280
133
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281 # Save the process record.
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282 if save_record:
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283 t = time.clock()
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284 record.saveCurrent(record_cache.getCachePath(record_name))
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285 logger.debug(format_timed(t, 'saved bake record', colored=False))
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286
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287 return record.detach()
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288
213
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289 def processDirectory(self, ctx, start_dir):
3
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290 for dirpath, dirnames, filenames in os.walk(start_dir):
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291 rel_dirpath = os.path.relpath(dirpath, start_dir)
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292 dirnames[:] = [d for d in dirnames
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293 if not re_matchany(d, self.skip_patterns, rel_dirpath)]
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294
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295 for filename in filenames:
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296 if re_matchany(filename, self.skip_patterns, rel_dirpath):
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297 continue
213
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298 self.processFile(ctx, os.path.join(dirpath, filename))
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299
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300 def processFile(self, ctx, path):
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301 logger.debug("Queuing: %s" % path)
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302 job = ProcessingWorkerJob(ctx.base_dir, ctx.mount_info, path)
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303 ctx.job_queue.put_nowait(job)
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304
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305
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306 class ProcessingWorkerContext(object):
120
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307 def __init__(self, pipeline, record,
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308 work_queue, abort_event, pipeline_lock):
3
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309 self.pipeline = pipeline
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310 self.record = record
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311 self.work_queue = work_queue
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312 self.abort_event = abort_event
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313 self.pipeline_lock = pipeline_lock
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314
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315
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316 class ProcessingWorkerJob(object):
213
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317 def __init__(self, base_dir, mount_info, path):
3
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318 self.base_dir = base_dir
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319 self.mount_info = mount_info
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320 self.path = path
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321
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322
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323 class ProcessingWorker(threading.Thread):
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324 def __init__(self, wid, ctx):
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325 super(ProcessingWorker, self).__init__()
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326 self.wid = wid
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327 self.ctx = ctx
215
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328 self.success = True
3
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329
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330 def run(self):
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331 while(not self.ctx.abort_event.is_set()):
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332 try:
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333 job = self.ctx.work_queue.get(True, 0.1)
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334 except Empty:
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335 logger.debug("[%d] No more work... shutting down." % self.wid)
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336 break
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337
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338 try:
215
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339 success = self._unsafeRun(job)
3
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340 logger.debug("[%d] Done with file." % self.wid)
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341 self.ctx.work_queue.task_done()
215
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diff changeset
342 self.success &= success
3
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343 except Exception as ex:
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344 self.ctx.abort_event.set()
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345 self.success = False
3
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346 logger.error("[%d] Critical error, aborting." % self.wid)
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347 logger.exception(ex)
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348 break
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349
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350 def _unsafeRun(self, job):
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351 start_time = time.clock()
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352 pipeline = self.ctx.pipeline
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353 record = self.ctx.record
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354
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355 rel_path = os.path.relpath(job.path, job.base_dir)
120
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diff changeset
356 previous_entry = record.getPreviousEntry(rel_path)
129
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diff changeset
357
120
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358 record_entry = ProcessorPipelineRecordEntry(job.base_dir, rel_path)
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diff changeset
359 record.addEntry(record_entry)
3
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diff changeset
360
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diff changeset
361 # Figure out if a previously processed file is overriding this one.
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362 # This can happen if a theme file (processed via a mount point)
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363 # is overridden in the user's website.
120
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diff changeset
364 if record.current.hasOverrideEntry(rel_path):
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diff changeset
365 record_entry.flags |= FLAG_OVERRIDEN
3
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diff changeset
366 logger.info(format_timed(start_time,
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367 '%s [not baked, overridden]' % rel_path))
215
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diff changeset
368 return True
3
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369
205
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diff changeset
370 processors = pipeline.getFilteredProcessors(
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diff changeset
371 job.mount_info['processors'])
120
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diff changeset
372 try:
201
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diff changeset
373 builder = ProcessingTreeBuilder(processors)
120
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diff changeset
374 tree_root = builder.build(rel_path)
221
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diff changeset
375 record_entry.flags |= FLAG_PREPARED
120
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diff changeset
376 except ProcessingTreeError as ex:
215
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diff changeset
377 msg = str(ex)
221
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diff changeset
378 logger.error("Error preparing %s:\n%s" % (rel_path, msg))
215
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diff changeset
379 while ex:
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diff changeset
380 record_entry.errors.append(str(ex))
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diff changeset
381 ex = ex.__cause__
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diff changeset
382 return False
120
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diff changeset
383
3
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diff changeset
384 print_node(tree_root, recursive=True)
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diff changeset
385 leaves = tree_root.getLeaves()
120
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diff changeset
386 record_entry.rel_outputs = [l.path for l in leaves]
191
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diff changeset
387 record_entry.proc_tree = get_node_name_tree(tree_root)
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diff changeset
388 if tree_root.getProcessor().is_bypassing_structured_processing:
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diff changeset
389 record_entry.flags |= FLAG_BYPASSED_STRUCTURED_PROCESSING
3
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diff changeset
390
120
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diff changeset
391 force = (pipeline.force or previous_entry is None or
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diff changeset
392 not previous_entry.was_processed_successfully)
3
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diff changeset
393 if not force:
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diff changeset
394 force = re_matchany(rel_path, pipeline.force_patterns)
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diff changeset
395
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diff changeset
396 if force:
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diff changeset
397 tree_root.setState(STATE_DIRTY, True)
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diff changeset
398
120
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diff changeset
399 try:
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400 runner = ProcessingTreeRunner(
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401 job.base_dir, pipeline.tmp_dir,
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402 pipeline.out_dir, self.ctx.pipeline_lock)
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403 if runner.processSubTree(tree_root):
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404 record_entry.flags |= FLAG_PROCESSED
215
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405 logger.info(format_timed(
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406 start_time, "[%d] %s" % (self.wid, rel_path)))
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407 return True
120
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408 except ProcessingTreeError as ex:
215
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409 msg = str(ex)
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410 if isinstance(ex, ProcessorError):
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411 msg = str(ex.__cause__)
221
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412 logger.error("Error processing %s:\n%s" % (rel_path, msg))
215
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413 while ex:
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414 msg = re_ansicolors.sub('', str(ex))
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415 record_entry.errors.append(msg)
215
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416 ex = ex.__cause__
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417 return False
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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418
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419
208
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420 def make_mount_infos(mounts, root_dir):
201
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421 if isinstance(mounts, list):
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422 mounts = {m: {} for m in mounts}
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423
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424 for name, info in mounts.items():
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425 if not isinstance(info, dict):
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426 raise Exception("Asset directory info for '%s' is not a "
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427 "dictionary." % name)
205
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428 info.setdefault('processors', 'all -uglifyjs -cleancss')
208
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429 info['path'] = os.path.join(root_dir, name)
201
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diff changeset
430
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431 return mounts
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diff changeset
432
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433
3
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434 def make_re(patterns):
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435 re_patterns = []
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436 for pat in patterns:
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437 if pat[0] == '/' and pat[-1] == '/' and len(pat) > 2:
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438 re_patterns.append(pat[1:-1])
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439 else:
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440 escaped_pat = (re.escape(pat)
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441 .replace(r'\*', r'[^/\\]*')
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442 .replace(r'\?', r'[^/\\]'))
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443 re_patterns.append(escaped_pat)
5
474c9882decf Upgrade to Python 3.
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diff changeset
444 return [re.compile(p) for p in re_patterns]
3
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diff changeset
445
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diff changeset
446
35
e4c345dcf33c More unit tests, fix a bug with the skip patterns.
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diff changeset
447 def re_matchany(filename, patterns, dirname=None):
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448 if dirname and dirname != '.':
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diff changeset
449 filename = os.path.join(dirname, filename)
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diff changeset
450
11
617191dec18e Fixes for Windows, make `findPagePath` return a ref path.
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diff changeset
451 # skip patterns use a forward slash regardless of the platform.
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diff changeset
452 filename = filename.replace('\\', '/')
3
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diff changeset
453 for pattern in patterns:
22
df790a827d38 Correctly match skip patterns.
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diff changeset
454 if pattern.search(filename):
3
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diff changeset
455 return True
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
456 return False
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
457