annotate piecrust/processing/pipeline.py @ 414:c4b3a7fd2f87

bake: Make pipeline processing multi-process. Not many changes here, as it's pretty straightforward, but an API change for processors so they know if they're being initialized/disposed from the main process or from one of the workers. This makes it possible to do global stuff that has side-effects (e.g. create a directory) vs. doing in-memory stuff.
author Ludovic Chabant <ludovic@chabant.com>
date Sat, 20 Jun 2015 19:20:30 -0700
parents
children 4a43d7015b75
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Ludovic Chabant <ludovic@chabant.com>
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1 import os
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2 import os.path
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3 import re
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4 import time
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5 import queue
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6 import hashlib
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7 import logging
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8 import multiprocessing
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9 from piecrust.chefutil import format_timed, format_timed_scope
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10 from piecrust.processing.base import PipelineContext
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11 from piecrust.processing.records import (
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12 ProcessorPipelineRecordEntry, TransitionalProcessorPipelineRecord,
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13 FLAG_PROCESSED)
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14 from piecrust.processing.worker import (
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15 ProcessingWorkerContext, ProcessingWorkerJob,
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16 worker_func, get_filtered_processors)
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17
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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 class _ProcessingContext(object):
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23 def __init__(self, pool, record, base_dir, mount_info):
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24 self.pool = pool
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25 self.record = record
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26 self.base_dir = base_dir
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27 self.mount_info = mount_info
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28
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29
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30 class ProcessorPipeline(object):
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31 def __init__(self, app, out_dir, force=False):
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32 assert app and out_dir
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33 self.app = app
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34 self.out_dir = out_dir
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35 self.force = force
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36
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37 tmp_dir = app.sub_cache_dir
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38 if not tmp_dir:
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39 import tempfile
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40 tmp_dir = os.path.join(tempfile.gettempdir(), 'piecrust')
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41 self.tmp_dir = os.path.join(tmp_dir, 'proc')
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42
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43 baker_params = app.config.get('baker') or {}
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44
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45 assets_dirs = baker_params.get('assets_dirs', app.assets_dirs)
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46 self.mounts = make_mount_infos(assets_dirs, self.app.root_dir)
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47
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48 self.num_workers = baker_params.get(
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49 'workers', multiprocessing.cpu_count())
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50
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51 ignores = baker_params.get('ignore', [])
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52 ignores += [
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53 '_cache', '_counter',
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54 'theme_info.yml',
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55 '.DS_Store', 'Thumbs.db',
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56 '.git*', '.hg*', '.svn']
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57 self.ignore_patterns = make_re(ignores)
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58 self.force_patterns = make_re(baker_params.get('force', []))
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59
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60 # Those things are mostly for unit-testing.
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61 self.enabled_processors = None
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62 self.additional_processors = None
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63
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64 def addIgnorePatterns(self, patterns):
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65 self.ignore_patterns += make_re(patterns)
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66
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67 def run(self, src_dir_or_file=None, *,
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68 delete=True, previous_record=None, save_record=True):
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69 start_time = time.perf_counter()
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70
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71 # Get the list of processors for this run.
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72 processors = self.app.plugin_loader.getProcessors()
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73 if self.enabled_processors is not None:
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74 logger.debug("Filtering processors to: %s" %
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75 self.enabled_processors)
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76 processors = get_filtered_processors(processors,
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77 self.enabled_processors)
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78 if self.additional_processors is not None:
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79 logger.debug("Adding %s additional processors." %
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80 len(self.additional_processors))
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81 for proc in self.additional_processors:
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82 self.app.env.registerTimer(proc.__class__.__name__,
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83 raise_if_registered=False)
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84 proc.initialize(self.app)
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85 processors.append(proc)
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86
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87 # Invoke pre-processors.
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88 pipeline_ctx = PipelineContext(-1, self.app, self.out_dir,
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89 self.tmp_dir, self.force)
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90 for proc in processors:
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91 proc.onPipelineStart(pipeline_ctx)
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92
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93 # Pre-processors can define additional ignore patterns.
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94 self.ignore_patterns += make_re(
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95 pipeline_ctx._additional_ignore_patterns)
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96
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97 # Create the worker pool.
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98 pool = _WorkerPool()
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99
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100 # Create the pipeline record.
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101 record = TransitionalProcessorPipelineRecord()
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102 record_cache = self.app.cache.getCache('proc')
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103 record_name = (
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104 hashlib.md5(self.out_dir.encode('utf8')).hexdigest() +
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105 '.record')
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106 if previous_record:
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107 record.setPrevious(previous_record)
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108 elif not self.force and record_cache.has(record_name):
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109 with format_timed_scope(logger, 'loaded previous bake record',
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110 level=logging.DEBUG, colored=False):
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111 record.loadPrevious(record_cache.getCachePath(record_name))
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112 logger.debug("Got %d entries in process record." %
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113 len(record.previous.entries))
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114 record.current.success = True
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115 record.current.processed_count = 0
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116
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117 # Work!
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118 def _handler(res):
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119 entry = record.getCurrentEntry(res.path)
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120 assert entry is not None
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121 entry.flags |= res.flags
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122 entry.proc_tree = res.proc_tree
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123 entry.rel_outputs = res.rel_outputs
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124 if res.errors:
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125 entry.errors += res.errors
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126 record.current.success = False
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127 if entry.flags & FLAG_PROCESSED:
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128 record.current.processed_count += 1
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129
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130 pool = self._createWorkerPool()
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131 expected_result_count = self._process(src_dir_or_file, pool, record)
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132 self._waitOnWorkerPool(pool, expected_result_count, _handler)
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
133 self._terminateWorkerPool(pool)
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
134
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
135 # Get timing information from the workers.
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
136 record.current.timers = {}
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
137 for _ in range(len(pool.workers)):
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
138 try:
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
139 timers = pool.results.get(True, 0.1)
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
140 except queue.Empty:
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
141 logger.error("Didn't get timing information from all workers.")
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
142 break
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
143
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
144 for name, val in timers['data'].items():
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
145 main_val = record.current.timers.setdefault(name, 0)
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
146 record.current.timers[name] = main_val + val
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
147
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
148 # Invoke post-processors.
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
149 pipeline_ctx.record = record.current
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
150 for proc in processors:
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
151 proc.onPipelineEnd(pipeline_ctx)
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
152
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
153 # Handle deletions.
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
154 if delete:
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
155 for path, reason in record.getDeletions():
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
156 logger.debug("Removing '%s': %s" % (path, reason))
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
157 try:
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
158 os.remove(path)
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
159 except FileNotFoundError:
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
160 pass
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
161 logger.info('[delete] %s' % path)
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
162
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
163 # Finalize the process record.
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
164 record.current.process_time = time.time()
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
165 record.current.out_dir = self.out_dir
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
166 record.collapseRecords()
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
167
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
168 # Save the process record.
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
169 if save_record:
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
170 with format_timed_scope(logger, 'saved bake record',
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
171 level=logging.DEBUG, colored=False):
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
172 record.saveCurrent(record_cache.getCachePath(record_name))
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
173
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
174 logger.info(format_timed(
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
175 start_time,
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
176 "processed %d assets." % record.current.processed_count))
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
177
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
178 return record.detach()
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
179
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
180 def _process(self, src_dir_or_file, pool, record):
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
181 expected_result_count = 0
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
182
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
183 if src_dir_or_file is not None:
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
184 # Process only the given path.
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
185 # Find out what mount point this is in.
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
186 for name, info in self.mounts.items():
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
187 path = info['path']
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
188 if src_dir_or_file[:len(path)] == path:
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
189 base_dir = path
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
190 mount_info = info
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
191 break
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
192 else:
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
193 known_roots = [i['path'] for i in self.mounts.values()]
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
194 raise Exception("Input path '%s' is not part of any known "
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
195 "mount point: %s" %
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
196 (src_dir_or_file, known_roots))
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
197
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
198 ctx = _ProcessingContext(pool, record, base_dir, mount_info)
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
199 logger.debug("Initiating processing pipeline on: %s" %
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
200 src_dir_or_file)
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
201 if os.path.isdir(src_dir_or_file):
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
202 expected_result_count = self._processDirectory(
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
203 ctx, src_dir_or_file)
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
204 elif os.path.isfile(src_dir_or_file):
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
205 self._processFile(ctx, src_dir_or_file)
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
206 expected_result_count = 1
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
207
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
208 else:
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
209 # Process everything.
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
210 for name, info in self.mounts.items():
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
211 path = info['path']
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
212 ctx = _ProcessingContext(pool, record, path, info)
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
213 logger.debug("Initiating processing pipeline on: %s" % path)
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
214 expected_result_count = self._processDirectory(ctx, path)
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
215
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
216 return expected_result_count
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
217
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
218 def _processDirectory(self, ctx, start_dir):
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
219 queued_count = 0
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
220 for dirpath, dirnames, filenames in os.walk(start_dir):
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
221 rel_dirpath = os.path.relpath(dirpath, start_dir)
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
222 dirnames[:] = [d for d in dirnames
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
223 if not re_matchany(
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
224 d, self.ignore_patterns, rel_dirpath)]
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
225
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
226 for filename in filenames:
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
227 if re_matchany(filename, self.ignore_patterns, rel_dirpath):
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
228 continue
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
229 self._processFile(ctx, os.path.join(dirpath, filename))
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
230 queued_count += 1
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
231 return queued_count
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
232
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
233 def _processFile(self, ctx, path):
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
234 # TODO: handle overrides between mount-points.
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
235
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
236 entry = ProcessorPipelineRecordEntry(path)
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
237 ctx.record.addEntry(entry)
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
238
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
239 previous_entry = ctx.record.getPreviousEntry(path)
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
240 force_this = (self.force or previous_entry is None or
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
241 not previous_entry.was_processed_successfully)
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
242
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
243 job = ProcessingWorkerJob(ctx.base_dir, ctx.mount_info, path,
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
244 force=force_this)
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
245
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
246 logger.debug("Queuing: %s" % path)
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
247 ctx.pool.queue.put_nowait(job)
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Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
248
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
249 def _createWorkerPool(self):
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
250 pool = _WorkerPool()
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
251 for i in range(self.num_workers):
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
252 ctx = ProcessingWorkerContext(
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
253 self.app.root_dir, self.out_dir, self.tmp_dir,
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
254 pool.queue, pool.results, pool.abort_event,
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
255 self.force, self.app.debug)
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
256 ctx.enabled_processors = self.enabled_processors
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
257 ctx.additional_processors = self.additional_processors
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
258 w = multiprocessing.Process(
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
259 name='Worker_%d' % i,
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
260 target=worker_func, args=(i, ctx))
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
261 w.start()
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
262 pool.workers.append(w)
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
263 return pool
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
264
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
265 def _waitOnWorkerPool(self, pool, expected_result_count, result_handler):
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
266 abort_with_exception = None
c4b3a7fd2f87 bake: Make pipeline processing multi-process.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
267 try:
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268 got_count = 0
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269 while got_count < expected_result_count:
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270 try:
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271 res = pool.results.get(True, 10)
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272 except queue.Empty:
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273 logger.error(
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274 "Got %d results, expected %d, and timed-out "
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275 "for 10 seconds. A worker might be stuck?" %
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276 (got_count, expected_result_count))
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277 abort_with_exception = Exception("Worker time-out.")
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278 break
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279
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280 if isinstance(res, dict) and res.get('type') == 'error':
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281 abort_with_exception = Exception(
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282 'Worker critical error:\n' +
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283 '\n'.join(res['messages']))
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284 break
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285
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286 got_count += 1
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287 result_handler(res)
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288 except KeyboardInterrupt as kiex:
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289 logger.warning("Bake aborted by user... "
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290 "waiting for workers to stop.")
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291 abort_with_exception = kiex
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292
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293 if abort_with_exception:
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294 pool.abort_event.set()
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295 for w in pool.workers:
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296 w.join(2)
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297 raise abort_with_exception
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298
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299 def _terminateWorkerPool(self, pool):
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300 pool.abort_event.set()
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301 for w in pool.workers:
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302 w.join()
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303
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304
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305 class _WorkerPool(object):
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306 def __init__(self):
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307 self.queue = multiprocessing.JoinableQueue()
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308 self.results = multiprocessing.Queue()
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309 self.abort_event = multiprocessing.Event()
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310 self.workers = []
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311
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312
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313 def make_mount_infos(mounts, root_dir):
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314 if isinstance(mounts, list):
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315 mounts = {m: {} for m in mounts}
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316
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317 for name, info in mounts.items():
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318 if not isinstance(info, dict):
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319 raise Exception("Asset directory info for '%s' is not a "
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320 "dictionary." % name)
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321 info.setdefault('processors', 'all -uglifyjs -cleancss')
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322 info['path'] = os.path.join(root_dir, name)
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323
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324 return mounts
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325
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326
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327 def make_re(patterns):
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328 re_patterns = []
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329 for pat in patterns:
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330 if pat[0] == '/' and pat[-1] == '/' and len(pat) > 2:
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331 re_patterns.append(pat[1:-1])
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332 else:
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333 escaped_pat = (
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334 re.escape(pat)
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335 .replace(r'\*', r'[^/\\]*')
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336 .replace(r'\?', r'[^/\\]'))
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337 re_patterns.append(escaped_pat)
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338 return [re.compile(p) for p in re_patterns]
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339
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340
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341 def re_matchany(filename, patterns, dirname=None):
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342 if dirname and dirname != '.':
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343 filename = os.path.join(dirname, filename)
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344
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345 # skip patterns use a forward slash regardless of the platform.
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346 filename = filename.replace('\\', '/')
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347 for pattern in patterns:
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348 if pattern.search(filename):
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349 return True
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350 return False
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parents:
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351