Mercurial > kallithea
annotate pylons_app/lib/indexers/multiprocessing_indexer.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 | b153a51b1d3b |
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rev | line source |
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406
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Implemented search using whoosh. Still as experimental option.
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1 from multiprocessing import Process, Queue, cpu_count, Lock |
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2 import socket, sys |
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3 import time |
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4 import os |
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5 import sys |
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6 from os.path import dirname as dn |
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7 from multiprocessing.dummy import current_process |
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8 from shutil import rmtree |
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9 |
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10 sys.path.append(dn(dn(dn(os.path.realpath(__file__))))) |
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11 |
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12 from pylons_app.model.hg_model import HgModel |
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13 from whoosh.analysis import RegexTokenizer, LowercaseFilter, StopFilter |
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14 from whoosh.fields import TEXT, ID, STORED, Schema |
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15 from whoosh.index import create_in, open_dir |
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16 from datetime import datetime |
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17 from multiprocessing.process import current_process |
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18 from multiprocessing import Array, Value |
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19 |
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20 root = dn(dn(os.path.dirname(os.path.abspath(__file__)))) |
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21 idx_location = os.path.join(root, 'data', 'index') |
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22 root_path = '/home/marcink/python_workspace_dirty/*' |
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23 |
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24 exclude_extensions = ['pyc', 'mo', 'png', 'jpg', 'jpeg', 'gif', 'swf', |
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25 'dll', 'ttf', 'psd', 'svg', 'pdf', 'bmp', 'dll'] |
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26 |
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27 my_analyzer = RegexTokenizer() | LowercaseFilter() |
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28 def scan_paths(root_location): |
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29 return HgModel.repo_scan('/', root_location, None, True) |
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30 |
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31 def index_paths(root_dir): |
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32 index_paths_ = set() |
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33 for path, dirs, files in os.walk(root_dir): |
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34 if path.find('.hg') == -1: |
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35 #if path.find('.hg') == -1 and path.find('bel-epa') != -1: |
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36 for f in files: |
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37 index_paths_.add(os.path.join(path, f)) |
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38 |
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39 return index_paths_ |
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40 |
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41 def get_schema(): |
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42 return Schema(owner=TEXT(), |
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43 repository=TEXT(stored=True), |
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44 path=ID(stored=True, unique=True), |
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45 content=TEXT(stored=True, analyzer=my_analyzer), |
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46 modtime=STORED()) |
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47 |
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48 def add_doc(writer, path, repo_name, contact): |
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49 """ |
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50 Adding doc to writer |
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51 @param writer: |
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52 @param path: |
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53 @param repo: |
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54 @param fname: |
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55 """ |
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56 |
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57 #we don't won't to read excluded file extensions just index them |
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58 if path.split('/')[-1].split('.')[-1].lower() not in exclude_extensions: |
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59 fobj = open(path, 'rb') |
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60 content = fobj.read() |
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61 fobj.close() |
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62 try: |
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63 u_content = unicode(content) |
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64 except UnicodeDecodeError: |
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65 #incase we have a decode error just represent as byte string |
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66 u_content = unicode(str(content).encode('string_escape')) |
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67 else: |
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68 u_content = u'' |
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69 writer.add_document(repository=u"%s" % repo_name, |
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70 owner=unicode(contact), |
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71 path=u"%s" % path, |
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72 content=u_content, |
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73 modtime=os.path.getmtime(path)) |
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74 |
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75 |
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76 class MultiProcessIndexer(object): |
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77 """ multiprocessing whoosh indexer """ |
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78 |
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79 def __init__(self, idx, work_set=set(), nr_processes=cpu_count()): |
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80 q = Queue() |
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81 l = Lock() |
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82 work_set = work_set |
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83 writer = None |
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84 #writer = idx.writer() |
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85 |
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86 for q_task in work_set: |
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87 q.put(q_task) |
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88 |
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89 q.put('COMMIT') |
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90 |
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91 #to stop all processes we have to put STOP to queue and |
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92 #break the loop for each process |
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93 for _ in xrange(nr_processes): |
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94 q.put('STOP') |
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95 |
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96 |
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97 for _ in xrange(nr_processes): |
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98 p = Process(target=self.work_func, args=(q, l, idx, writer)) |
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99 p.start() |
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100 |
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101 |
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102 |
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103 def work_func(self, q, l, idx, writer): |
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104 """ worker class invoked by process """ |
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105 |
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106 |
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107 writer = idx.writer() |
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108 |
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109 while True: |
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110 q_task = q.get() |
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111 proc = current_process() |
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112 |
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113 # if q_task == 'COMMIT': |
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114 # l.acquire() |
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115 # sys.stdout.write('%s commiting and STOP\n' % proc._name) |
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116 # writer.commit(merge=False) |
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117 # l.release() |
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118 # break |
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119 # l.acquire() |
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120 # writer = idx.writer() |
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121 # l.release() |
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122 |
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123 if q_task == 'STOP': |
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124 sys.stdout.write('%s STOP\n' % proc._name) |
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125 break |
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126 |
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127 if q_task != 'COMMIT': |
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128 l.acquire() |
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129 |
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130 sys.stdout.write(' >> %s %s %s @ ' % q_task) |
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131 sys.stdout.write(' %s \n' % proc._name) |
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132 |
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133 l.release() |
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134 add_doc(writer, q_task[0], q_task[1], q_task[2]) |
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135 |
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136 l.acquire() |
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137 writer.commit(merge=True) |
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138 l.release() |
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139 |
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140 |
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141 if __name__ == "__main__": |
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142 #build queue |
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143 do = True if len(sys.argv) > 1 else False |
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144 q_tasks = [] |
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145 |
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146 if os.path.exists(idx_location): |
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147 rmtree(idx_location) |
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148 |
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149 if not os.path.exists(idx_location): |
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150 os.mkdir(idx_location) |
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151 |
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152 idx = create_in(idx_location, get_schema() , indexname='HG_INDEX') |
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153 |
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154 |
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155 if do: |
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156 sys.stdout.write('Building queue...') |
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157 for cnt, repo in enumerate(scan_paths(root_path).values()): |
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158 if repo.name != 'evoice_py': |
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159 continue |
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160 q_tasks.extend([(idx_path, repo.name, repo.contact) for idx_path in index_paths(repo.path)]) |
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161 if cnt == 4: |
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162 break |
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163 |
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164 sys.stdout.write('done\n') |
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165 |
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166 mpi = MultiProcessIndexer(idx, q_tasks) |
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167 |
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168 |
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169 else: |
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170 print 'checking index' |
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171 reader = idx.reader() |
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172 all = reader.all_stored_fields() |
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173 #print all |
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174 for fields in all: |
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175 print fields['path'] |
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176 |