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annotate piecrust/processing/tree.py @ 195:b4724e577a8c

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cosmetic: Fix some PEP8 issues.
author Ludovic Chabant <ludovic@chabant.com>
date Sun, 11 Jan 2015 23:04:55 -0800
parents 308d5180bf81
children a47580a0955b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3
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1 import os
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2 import time
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3 import os.path
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4 import logging
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133845647083 Better error management and removal support in baking/processing.
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5 from piecrust.chefutil import format_timed
3
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6
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7
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8 logger = logging.getLogger(__name__)
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9
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10
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11 STATE_UNKNOWN = 0
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12 STATE_DIRTY = 1
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13 STATE_CLEAN = 2
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14
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15
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16 FORCE_BUILD = object()
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17
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18
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19 class ProcessingTreeError(Exception):
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20 pass
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21
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22
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23 class ProcessorNotFoundError(ProcessingTreeError):
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24 pass
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25
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26
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27 class ProcessingTreeNode(object):
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28 def __init__(self, path, available_procs, level=0):
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29 self.path = path
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30 self.available_procs = available_procs
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31 self.outputs = []
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32 self.level = level
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33 self.state = STATE_UNKNOWN
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34 self._processor = None
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35
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36 def getProcessor(self):
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37 if self._processor is None:
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38 for p in self.available_procs:
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6827dcc9d3fb Changes to the asset processing pipeline:
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39 if p.matches(self.path):
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40 self._processor = p
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41 self.available_procs.remove(p)
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42 break
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43 else:
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44 raise ProcessorNotFoundError()
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45 return self._processor
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46
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47 def setState(self, state, recursive=True):
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48 self.state = state
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49 if recursive:
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50 for o in self.outputs:
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51 o.setState(state, True)
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52
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53 @property
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54 def is_leaf(self):
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55 return len(self.outputs) == 0
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56
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57 def getLeaves(self):
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58 if self.is_leaf:
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59 return [self]
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60 leaves = []
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61 for o in self.outputs:
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62 for l in o.getLeaves():
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63 leaves.append(l)
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64 return leaves
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65
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66
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67 class ProcessingTreeBuilder(object):
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68 def __init__(self, processors):
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69 self.processors = processors
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70
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71 def build(self, path):
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72 start_time = time.clock()
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73 tree_root = ProcessingTreeNode(path, list(self.processors))
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74
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75 loop_guard = 100
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76 walk_stack = [tree_root]
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77 while len(walk_stack) > 0:
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78 loop_guard -= 1
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79 if loop_guard <= 0:
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80 raise ProcessingTreeError("Infinite loop detected!")
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81
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82 cur_node = walk_stack.pop()
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83 proc = cur_node.getProcessor()
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84
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85 # If the root tree node (and only that one) wants to bypass this
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86 # whole tree business, so be it.
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87 if proc.is_bypassing_structured_processing:
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88 if cur_node != tree_root:
3
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89 raise ProcessingTreeError("Only root processors can "
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90 "bypass structured processing.")
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91 break
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92
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93 # Get the destination directory and output files.
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94 rel_dir, basename = os.path.split(cur_node.path)
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95 out_names = proc.getOutputFilenames(basename)
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96 if out_names is None:
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97 continue
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98
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99 for n in out_names:
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100 out_node = ProcessingTreeNode(
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101 os.path.join(rel_dir, n),
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102 list(cur_node.available_procs),
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103 cur_node.level + 1)
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104 cur_node.outputs.append(out_node)
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105
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106 if proc.PROCESSOR_NAME != 'copy':
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107 walk_stack.append(out_node)
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108
132
3834e2ef0cf2 Don't colour debug output.
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109 logger.debug(format_timed(
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110 start_time, "Built processing tree for: %s" % path,
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111 colored=False))
3
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112 return tree_root
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113
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114
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115 class ProcessingTreeRunner(object):
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116 def __init__(self, base_dir, tmp_dir, out_dir, lock=None):
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117 self.base_dir = base_dir
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118 self.tmp_dir = tmp_dir
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119 self.out_dir = out_dir
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120 self.lock = lock
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121
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122 def processSubTree(self, tree_root):
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123 did_process = False
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124 walk_stack = [tree_root]
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125 while len(walk_stack) > 0:
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126 cur_node = walk_stack.pop()
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127
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128 self._computeNodeState(cur_node)
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129 if cur_node.state == STATE_DIRTY:
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130 did_process_this_node = self.processNode(cur_node)
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131 did_process |= did_process_this_node
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132
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133 if did_process_this_node:
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134 for o in cur_node.outputs:
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135 if not o.is_leaf:
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136 walk_stack.append(o)
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137 else:
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138 for o in cur_node.outputs:
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diff changeset
139 if not o.is_leaf:
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diff changeset
140 walk_stack.append(o)
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diff changeset
141 return did_process
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diff changeset
142
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diff changeset
143 def processNode(self, node):
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diff changeset
144 full_path = self._getNodePath(node)
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diff changeset
145 proc = node.getProcessor()
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diff changeset
146 if proc.is_bypassing_structured_processing:
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diff changeset
147 try:
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diff changeset
148 start_time = time.clock()
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diff changeset
149 proc.process(full_path, self.out_dir)
117
6827dcc9d3fb Changes to the asset processing pipeline:
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parents: 55
diff changeset
150 print_node(
6827dcc9d3fb Changes to the asset processing pipeline:
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parents: 55
diff changeset
151 node,
6827dcc9d3fb Changes to the asset processing pipeline:
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parents: 55
diff changeset
152 format_timed(
132
3834e2ef0cf2 Don't colour debug output.
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diff changeset
153 start_time, "(bypassing structured processing)",
3834e2ef0cf2 Don't colour debug output.
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parents: 120
diff changeset
154 colored=False))
3
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diff changeset
155 return True
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diff changeset
156 except Exception as e:
120
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diff changeset
157 raise ProcessingTreeError("Error processing: %s" %
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parents: 117
diff changeset
158 node.path) from e
3
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diff changeset
159
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diff changeset
160 # All outputs of a node must go to the same directory, so we can get
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
161 # the output directory off of the first output.
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parents:
diff changeset
162 base_out_dir = self._getNodeBaseDir(node.outputs[0])
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diff changeset
163 rel_out_dir = os.path.dirname(node.path)
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164 out_dir = os.path.join(base_out_dir, rel_out_dir)
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165 if not os.path.isdir(out_dir):
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diff changeset
166 if self.lock:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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167 with self.lock:
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168 if not os.path.isdir(out_dir):
5
474c9882decf Upgrade to Python 3.
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parents: 3
diff changeset
169 os.makedirs(out_dir, 0o755)
3
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diff changeset
170 else:
5
474c9882decf Upgrade to Python 3.
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diff changeset
171 os.makedirs(out_dir, 0o755)
3
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172
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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173 try:
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174 start_time = time.clock()
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diff changeset
175 proc_res = proc.process(full_path, out_dir)
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176 if proc_res is None:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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177 raise Exception("Processor '%s' didn't return a boolean "
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diff changeset
178 "result value." % proc)
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diff changeset
179 if proc_res:
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180 print_node(node, "-> %s" % out_dir)
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181 return True
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182 else:
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183 print_node(node, "-> %s [clean]" % out_dir)
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diff changeset
184 return False
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diff changeset
185 except Exception as e:
18
0170f449f924 Slightly better exception throwing in the processing pipeline.
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parents: 5
diff changeset
186 raise Exception("Error processing: %s" % node.path) from e
3
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diff changeset
187
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188 def _computeNodeState(self, node):
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diff changeset
189 if node.state != STATE_UNKNOWN:
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diff changeset
190 return
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
191
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
192 proc = node.getProcessor()
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diff changeset
193 if (proc.is_bypassing_structured_processing or
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
194 not proc.is_delegating_dependency_check):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
195 # This processor wants to handle things on its own...
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
196 node.setState(STATE_DIRTY, False)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
197 return
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
198
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
199 start_time = time.clock()
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
200
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
201 # Get paths and modification times for the input path and
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
202 # all dependencies (if any).
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
203 base_dir = self._getNodeBaseDir(node)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
204 full_path = os.path.join(base_dir, node.path)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
205 in_mtime = (full_path, os.path.getmtime(full_path))
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diff changeset
206 force_build = False
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diff changeset
207 try:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
208 deps = proc.getDependencies(full_path)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
209 if deps == FORCE_BUILD:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
210 force_build = True
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
211 elif deps is not None:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
212 for dep in deps:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
213 dep_mtime = os.path.getmtime(dep)
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diff changeset
214 if dep_mtime > in_mtime[1]:
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diff changeset
215 in_mtime = (dep, dep_mtime)
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diff changeset
216 except Exception as e:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
217 logger.warning("%s -- Will force-bake: %s" % (e, node.path))
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
218 node.setState(STATE_DIRTY, True)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
219 return
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
220
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
221 if force_build:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
222 # Just do what the processor told us to do.
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
223 node.setState(STATE_DIRTY, True)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
224 message = "Processor requested a forced build."
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
225 print_node(node, message)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
226 else:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
227 # Get paths and modification times for the outputs.
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
228 message = None
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
229 for o in node.outputs:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
230 full_out_path = self._getNodePath(o)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
231 if not os.path.isfile(full_out_path):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
232 message = "Output '%s' doesn't exist." % o.path
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
233 break
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
234 o_mtime = os.path.getmtime(full_out_path)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
235 if o_mtime < in_mtime[1]:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
236 message = "Input '%s' is newer than output '%s'." % (
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
237 in_mtime[0], o.path)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
238 break
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
239 if message is not None:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
240 node.setState(STATE_DIRTY, True)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
241 message += " Re-processing sub-tree."
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
242 print_node(node, message)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
243 else:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
244 node.setState(STATE_CLEAN, False)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
245
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
246 state = "dirty" if node.state == STATE_DIRTY else "clean"
120
133845647083 Better error management and removal support in baking/processing.
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parents: 117
diff changeset
247 logger.debug(format_timed(start_time,
133845647083 Better error management and removal support in baking/processing.
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parents: 117
diff changeset
248 "Computed node dirtyness: %s" % state,
132
3834e2ef0cf2 Don't colour debug output.
Ludovic Chabant <ludovic@chabant.com>
parents: 120
diff changeset
249 indent_level=node.level, colored=False))
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
250
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
251 def _getNodeBaseDir(self, node):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
252 if node.level == 0:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
253 return self.base_dir
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
254 if node.is_leaf:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
255 return self.out_dir
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
256 return os.path.join(self.tmp_dir, str(node.level))
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
257
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
258 def _getNodePath(self, node):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
259 base_dir = self._getNodeBaseDir(node)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
260 return os.path.join(base_dir, node.path)
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parents:
diff changeset
261
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
262
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
263 def print_node(node, message=None, recursive=False):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
264 indent = ' ' * node.level
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
265 try:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
266 proc_name = node.getProcessor().PROCESSOR_NAME
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
267 except ProcessorNotFoundError:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
268 proc_name = 'n/a'
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
269
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
270 message = message or ''
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
271 logger.debug('%s%s [%s] %s' % (indent, node.path, proc_name, message))
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff changeset
272
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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273 if recursive:
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274 for o in node.outputs:
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275 print_node(o, None, True)
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276
191
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277
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278 def get_node_name_tree(node):
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279 try:
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280 proc_name = node.getProcessor().PROCESSOR_NAME
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281 except ProcessorNotFoundError:
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282 proc_name = 'n/a'
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283
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284 children = []
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285 for o in node.outputs:
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286 if not o.outputs:
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287 continue
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288 children.append(get_node_name_tree(o))
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289 return (proc_name, children)
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290