Mercurial Hosting > luan
annotate src/luan/modules/lucene/Lucene.luan @ 1365:6617763dfd76
fix logging and lucene backup
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Wed, 12 Jun 2019 22:16:10 -0600 |
parents | 8d95711f6615 |
children | 836e00bf7ce2 |
rev | line source |
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1 require "java" |
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2 local Luan = require "luan:Luan.luan" |
503 | 3 local error = Luan.error |
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4 local ipairs = Luan.ipairs or error() |
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5 local type = Luan.type or error() |
796 | 6 local set_metatable = Luan.set_metatable or error() |
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7 local Boot = require "luan:Boot.luan" |
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8 local Html = require "luan:Html.luan" |
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9 local Io = require "luan:Io.luan" |
746 | 10 local uri = Io.uri or error() |
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11 local String = require "luan:String.luan" |
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12 local matches = String.matches or error() |
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13 local Rpc = require "luan:Rpc.luan" |
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14 local LuceneIndex = require "java:luan.modules.lucene.LuceneIndex" |
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15 local NumberFieldParser = require "java:luan.lib.queryparser.NumberFieldParser" |
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16 local SaneQueryParser = require "java:luan.lib.queryparser.SaneQueryParser" |
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17 |
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18 |
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19 local Lucene = {} |
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20 |
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21 Lucene.instances = {} |
709 | 22 |
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23 Lucene.type = { |
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24 english = LuceneIndex.ENGLISH_FIELD_PARSER |
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25 string = LuceneIndex.STRING_FIELD_PARSER |
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26 integer = NumberFieldParser.INT |
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27 long = NumberFieldParser.LONG |
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28 double = NumberFieldParser.DOUBLE |
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29 } |
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30 |
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31 Lucene.literal = SaneQueryParser.literal |
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32 |
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33 function Lucene.index(index_dir,default_type,default_fields) |
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34 local index = {} |
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35 index.dir = index_dir |
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36 local java_index, closer = LuceneIndex.getLuceneIndex(index_dir,default_type,default_fields) |
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37 index.java = java_index |
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38 index.closer = closer or error() |
796 | 39 |
40 index.indexed_fields = {} | |
41 local mt = {} | |
42 set_metatable(index.indexed_fields,mt) | |
43 function mt.__index(_,key) | |
44 return java_index.getIndexedFieldParser(key) | |
45 end | |
46 function mt.__new_index(_,key,value) | |
47 return java_index.setIndexedFieldParser(key,value) | |
48 end | |
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49 |
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50 index.to_string = java_index.to_string |
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51 -- index.backup = java_index.backup |
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52 index.snapshot = java_index.snapshot |
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53 index.advanced_search = java_index.advanced_search |
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54 index.search_in_transaction = java_index.search_in_transaction |
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55 index.delete_all = java_index.delete_all |
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56 index.delete = java_index.delete |
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57 index.save = java_index.save |
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58 index.update_in_transaction = java_index.update_in_transaction |
709 | 59 -- index.close = java_index.close |
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60 index.ensure_open = java_index.ensure_open |
617 | 61 index.next_id = java_index.nextId |
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62 index.highlighter = java_index.highlighter |
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63 index.indexed_only_fields = java_index.indexed_only_fields |
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64 index.count_tokens = java_index.count_tokens |
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65 |
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66 Lucene.instances[index] = true |
709 | 67 |
68 function index.close() | |
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69 Lucene.instances[index] = nil |
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70 closer.close() |
709 | 71 end |
72 | |
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73 function index.search( query, from, to, options ) |
770 | 74 from or error "missing 'from' parameter" |
75 to or error "missing 'to' parameter" | |
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76 options = options or {} |
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77 local explain_fld = options.explain |
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78 local score_fld = options.score |
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79 local results = {} |
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80 local function fn(i,doc_fn,score) |
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81 if i >= from then |
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82 local doc |
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83 if explain_fld == nil then |
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84 doc = doc_fn() |
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85 else |
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86 local explanation |
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87 doc, explanation = doc_fn("explain") |
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88 doc[explain_fld] = explanation.toString() |
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89 end |
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90 if score_fld ~= nil then |
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91 doc[score_fld] = score |
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92 end |
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93 results[#results+1] = doc |
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94 end |
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95 end |
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96 local total_hits = index.advanced_search(query,fn,to,options.sort) |
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97 return results, total_hits |
257
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98 end |
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99 |
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100 function index.get_document(query) |
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101 local doc |
1348 | 102 local function fn(_,doc_fn,_) |
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103 doc = doc_fn() |
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104 end |
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105 local total_hits = index.advanced_search(query,fn,1) |
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106 total_hits <= 1 or error( "found " .. total_hits .. " documents" ) |
257
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107 return doc |
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108 end |
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109 |
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110 function index.count(query) |
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111 return index.advanced_search(query) |
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112 end |
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113 |
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114 function index.html_highlighter(query,formatter,container_tags) |
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115 local highlighter = index.highlighter(query,formatter) |
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116 return function(html) |
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117 local list = Html.parse(html,container_tags) |
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118 local result = {} |
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119 for _, obj in ipairs(list) do |
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120 if type(obj) == "string" then |
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121 obj = highlighter(obj) |
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122 end |
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123 result[#result+1] = obj |
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124 end |
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125 return Html.to_string(result) |
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126 end |
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127 end |
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128 |
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129 function index.zip(zip_file) |
761
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130 index.snapshot( function(dir_path,file_names) |
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131 zip_file.delete() |
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132 local zip_path = zip_file.canonical().to_string() |
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133 local dir = uri("file:"..dir_path) |
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134 local dir_name = dir.name() |
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135 local options = {dir=dir.parent()} |
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136 for _, file_name in ipairs(file_names) do |
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137 local cmd = "zip "..zip_path.." "..dir_name.."/"..file_name |
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138 Io.uri("os:"..cmd,options).read_text() |
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139 end |
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140 end ) |
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141 end |
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142 index.zip = Boot.no_security(index.zip) |
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143 |
754 | 144 function index.restore(zip_file) |
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145 java_index.run_in_lock( function() |
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146 local lucene_dir = uri("file:"..index.dir) |
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147 local before_restore = lucene_dir.parent().child("before_restore.zip") |
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148 index.zip(before_restore) |
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149 java_index.doClose() |
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150 lucene_dir.delete() |
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151 Io.uri("os:unzip "..zip_file.canonical().to_string(),{dir=lucene_dir.parent()}).read_text() |
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152 java_index.reopen() |
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153 end ) |
754 | 154 end |
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155 index.restore = Boot.no_security(index.restore) |
754 | 156 |
157 local function multi_error() | |
158 error "multiple lucene instances" | |
159 end | |
160 | |
1133 | 161 if Rpc.functions.lucene_backup == nil then |
754 | 162 |
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163 function Rpc.functions.lucene_backup(password) |
757 | 164 Io.password == password or error "wrong password" |
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165 local zip_file = uri("file:"..index.dir).parent().child("backup.zip") |
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166 index.zip(zip_file) |
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167 return zip_file |
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168 end |
754 | 169 |
170 function Rpc.functions.lucene_restore(password,zip_file) | |
757 | 171 Io.password == password or error "wrong password" |
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172 local backup_zip = uri("file:"..index.dir).parent().child("backup.zip") |
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173 backup_zip.write(zip_file) |
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174 index.restore(backup_zip) |
754 | 175 end |
176 | |
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177 else |
754 | 178 Rpc.functions.lucene_backup = multi_error |
179 Rpc.functions.lucene_restore = multi_error | |
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180 end |
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181 |
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182 return index |
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183 end |
503 | 184 |
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185 return Lucene |