Mercurial > kallithea
annotate pylons_app/lib/indexers/daemon.py @ 441:c59c4d4323e7
added support for broken symlinks in whoosh indexer
author | Marcin Kuzminski <marcin@python-works.com> |
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date | Wed, 01 Sep 2010 12:13:03 +0200 |
parents | 28f19fa562df |
children | e5157e2a530e |
rev | line source |
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1 #!/usr/bin/env python |
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2 # encoding: utf-8 |
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3 # whoosh indexer daemon for hg-app |
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4 # Copyright (C) 2009-2010 Marcin Kuzminski <marcin@python-works.com> |
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5 # |
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6 # This program is free software; you can redistribute it and/or |
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7 # modify it under the terms of the GNU General Public License |
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8 # as published by the Free Software Foundation; version 2 |
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9 # of the License or (at your opinion) any later version of the license. |
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10 # |
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11 # This program is distributed in the hope that it will be useful, |
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 # GNU General Public License for more details. |
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15 # |
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16 # You should have received a copy of the GNU General Public License |
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17 # along with this program; if not, write to the Free Software |
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18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
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19 # MA 02110-1301, USA. |
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20 """ |
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21 Created on Jan 26, 2010 |
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22 |
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23 @author: marcink |
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24 A deamon will read from task table and run tasks |
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25 """ |
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26 import sys |
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27 import os |
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28 from os.path import dirname as dn |
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29 from os.path import join as jn |
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30 |
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31 #to get the pylons_app import |
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32 project_path = dn(dn(dn(dn(os.path.realpath(__file__))))) |
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33 sys.path.append(project_path) |
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34 |
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35 from pidlock import LockHeld, DaemonLock |
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36 import traceback |
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37 from pylons_app.config.environment import load_environment |
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38 from pylons_app.model.hg_model import HgModel |
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39 from whoosh.index import create_in, open_dir |
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40 from shutil import rmtree |
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41 from pylons_app.lib.indexers import ANALYZER, INDEX_EXTENSIONS, IDX_LOCATION, \ |
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42 SCHEMA, IDX_NAME |
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43 |
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44 import logging |
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45 import logging.config |
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46 logging.config.fileConfig(jn(project_path, 'development.ini')) |
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47 log = logging.getLogger('whooshIndexer') |
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48 |
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49 def scan_paths(root_location): |
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50 return HgModel.repo_scan('/', root_location, None, True) |
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51 |
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52 class WhooshIndexingDaemon(object): |
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53 """Deamon for atomic jobs""" |
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54 |
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55 def __init__(self, indexname='HG_INDEX', repo_location=None): |
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56 self.indexname = indexname |
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57 self.repo_location = repo_location |
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58 |
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59 def get_paths(self, root_dir): |
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60 """recursive walk in root dir and return a set of all path in that dir |
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61 excluding files in .hg dir""" |
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62 index_paths_ = set() |
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63 for path, dirs, files in os.walk(root_dir): |
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64 if path.find('.hg') == -1: |
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65 for f in files: |
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66 index_paths_.add(jn(path, f)) |
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67 |
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68 return index_paths_ |
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69 |
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70 def add_doc(self, writer, path, repo): |
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71 """Adding doc to writer""" |
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72 |
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73 ext = unicode(path.split('/')[-1].split('.')[-1].lower()) |
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74 #we just index the content of choosen files |
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75 if ext in INDEX_EXTENSIONS: |
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76 log.debug(' >> %s [WITH CONTENT]' % path) |
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77 fobj = open(path, 'rb') |
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78 content = fobj.read() |
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79 fobj.close() |
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80 try: |
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81 u_content = unicode(content) |
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82 except UnicodeDecodeError: |
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83 #incase we have a decode error just represent as byte string |
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84 u_content = unicode(str(content).encode('string_escape')) |
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85 else: |
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86 log.debug(' >> %s' % path) |
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87 #just index file name without it's content |
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88 u_content = u'' |
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89 |
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90 |
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91 |
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92 try: |
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93 os.stat(path) |
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94 writer.add_document(owner=unicode(repo.contact), |
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95 repository=u"%s" % repo.name, |
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96 path=u"%s" % path, |
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97 content=u_content, |
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98 modtime=os.path.getmtime(path), |
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99 extension=ext) |
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100 except OSError, e: |
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101 import errno |
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102 if e.errno == errno.ENOENT: |
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103 log.debug('path %s does not exist or is a broken symlink' % path) |
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104 else: |
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105 raise e |
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106 |
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107 |
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108 def build_index(self): |
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109 if os.path.exists(IDX_LOCATION): |
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110 log.debug('removing previos index') |
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111 rmtree(IDX_LOCATION) |
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112 |
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113 if not os.path.exists(IDX_LOCATION): |
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114 os.mkdir(IDX_LOCATION) |
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115 |
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116 idx = create_in(IDX_LOCATION, SCHEMA, indexname=IDX_NAME) |
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117 writer = idx.writer() |
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118 |
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119 for cnt, repo in enumerate(scan_paths(self.repo_location).values()): |
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120 log.debug('building index @ %s' % repo.path) |
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121 |
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122 for idx_path in self.get_paths(repo.path): |
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123 self.add_doc(writer, idx_path, repo) |
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124 writer.commit(merge=True) |
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125 |
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126 log.debug('>>> FINISHED BUILDING INDEX <<<') |
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127 |
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128 |
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129 def update_index(self): |
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130 log.debug('STARTING INCREMENTAL INDEXING UPDATE') |
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131 |
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132 idx = open_dir(IDX_LOCATION, indexname=self.indexname) |
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133 # The set of all paths in the index |
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134 indexed_paths = set() |
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135 # The set of all paths we need to re-index |
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136 to_index = set() |
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137 |
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138 reader = idx.reader() |
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139 writer = idx.writer() |
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140 |
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141 # Loop over the stored fields in the index |
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142 for fields in reader.all_stored_fields(): |
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143 indexed_path = fields['path'] |
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144 indexed_paths.add(indexed_path) |
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145 |
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146 if not os.path.exists(indexed_path): |
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147 # This file was deleted since it was indexed |
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148 log.debug('removing from index %s' % indexed_path) |
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149 writer.delete_by_term('path', indexed_path) |
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150 |
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151 else: |
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152 # Check if this file was changed since it |
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153 # was indexed |
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154 indexed_time = fields['modtime'] |
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155 |
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156 mtime = os.path.getmtime(indexed_path) |
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157 |
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158 if mtime > indexed_time: |
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159 |
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160 # The file has changed, delete it and add it to the list of |
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161 # files to reindex |
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162 log.debug('adding to reindex list %s' % indexed_path) |
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163 writer.delete_by_term('path', indexed_path) |
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164 to_index.add(indexed_path) |
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165 #writer.commit() |
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166 |
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167 # Loop over the files in the filesystem |
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168 # Assume we have a function that gathers the filenames of the |
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169 # documents to be indexed |
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170 for repo in scan_paths(self.repo_location).values(): |
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171 for path in self.get_paths(repo.path): |
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172 if path in to_index or path not in indexed_paths: |
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173 # This is either a file that's changed, or a new file |
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174 # that wasn't indexed before. So index it! |
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175 self.add_doc(writer, path, repo) |
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176 log.debug('reindexing %s' % path) |
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177 |
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178 writer.commit(merge=True) |
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179 #idx.optimize() |
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180 log.debug('>>> FINISHED <<<') |
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181 |
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182 def run(self, full_index=False): |
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183 """Run daemon""" |
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184 if full_index: |
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185 self.build_index() |
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186 else: |
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187 self.update_index() |
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188 |
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189 if __name__ == "__main__": |
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190 repo_location = '/home/marcink/hg_repos/*' |
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191 full_index = True # False means looking just for changes |
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192 try: |
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193 l = DaemonLock() |
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194 WhooshIndexingDaemon(repo_location=repo_location)\ |
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195 .run(full_index=full_index) |
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196 l.release() |
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197 except LockHeld: |
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198 sys.exit(1) |
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199 |