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mod_storage_ejabberdsql_readonly/mod_storage_ejabberdsql_readonly.lua @ 4040:e17c937a71b3
mod_measure_memory: Report that stats are in units of bytes
author | Kim Alvefur <zash@zash.se> |
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date | Wed, 10 Jun 2020 12:12:47 +0200 |
parent | 2244:e0663dcd934d |
child | 5707:7c264a2cb970 |
rev | line source |
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1 |
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2 -- luacheck: ignore 212/self |
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3 |
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4 local sql = require "util.sql"; |
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5 local xml_parse = require "util.xml".parse; |
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6 local resolve_relative_path = require "util.paths".resolve_relative_path; |
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7 local stanza_preserialize = require "util.stanza".preserialize; |
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8 |
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9 local unpack = unpack |
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10 local function iterator(result) |
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11 return function(result_) |
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12 local row = result_(); |
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13 if row ~= nil then |
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14 return unpack(row); |
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15 end |
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16 end, result, nil; |
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17 end |
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18 |
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19 local default_params = { driver = "SQLite3" }; |
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20 |
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21 local engine; |
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22 |
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23 local host = module.host; |
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24 local user, store; |
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25 |
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26 local function keyval_store_get() |
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27 if store == "accounts" then |
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28 --for row in engine:select("SELECT `password`,`created_at` FROM `users` WHERE `username`=?", user or "") do |
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29 local result; |
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30 for row in engine:select("SELECT `password` FROM `users` WHERE `username`=? LIMIT 1", user or "") do result = row end |
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31 local password = result[1]; |
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32 --local created_at = result[2]; |
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33 return { password = password }; |
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34 |
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35 elseif store == "roster" then |
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36 local roster = {}; |
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37 local pending = nil; |
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38 --for row in engine:select("SELECT `jid`,`nick`,`subscription`,`ask`,`askmessage`,`server`,`subscribe`,`type`,`created_at` FROM `rosterusers` WHERE `username`=?", user or "") do |
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39 for row in engine:select("SELECT `jid`,`nick`,`subscription`,`ask` FROM `rosterusers` WHERE `username`=?", user or "") do |
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40 local contact = row[1]; |
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41 local name = row[2]; |
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42 if name == "" then name = nil; end |
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43 local subscription = row[3]; |
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44 if subscription == "N" then |
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45 subscription = "none" |
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46 elseif subscription == "B" then |
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47 subscription = "both" |
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48 elseif subscription == "F" then |
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49 subscription = "from" |
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50 elseif subscription == "T" then |
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51 subscription = "to" |
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52 else error("Unknown subscription type: "..subscription) end; |
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53 local ask = row[4]; |
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54 if ask == "N" then |
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55 ask = nil; |
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56 elseif ask == "O" then |
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57 ask = "subscribe"; |
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58 elseif ask == "I" then |
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59 if pending == nil then pending = {} end; |
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60 pending[contact] = true; |
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61 ask = nil; |
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62 elseif ask == "B" then |
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63 if pending == nil then pending = {} end; |
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64 pending[contact] = true; |
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65 ask = "subscribe"; |
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66 else error("Unknown ask type: "..ask); end |
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67 |
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68 --local askmessage = row[5]; |
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69 --local server = row[6]; |
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70 --local subscribe = row[7]; |
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71 --local type = row[8]; |
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72 --local created_at = row[9]; |
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73 |
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74 local groups = {}; |
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75 for row in engine:select("SELECT `grp` FROM `rostergroups` WHERE `username`=? AND `jid`=?", user or "", contact) do |
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76 local group = row[1]; |
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77 groups[group] = true; |
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78 end |
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79 |
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80 roster[contact] = { name = name, ask = ask, subscription = subscription, groups = groups }; |
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81 end |
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82 return roster; |
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83 |
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84 elseif store == "vcard" then |
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85 local result = nil; |
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86 for row in engine:select("SELECT `vcard` FROM `vcard` WHERE `username`=? LIMIT 1", user or "") do result = row end |
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87 if not result then |
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88 return nil; |
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89 end |
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90 local data, err = xml_parse(result[1]); |
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91 if data then |
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92 return stanza_preserialize(data); |
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93 end |
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94 |
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95 elseif store == "private" then |
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96 local private = nil; |
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97 local result; |
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98 for row in engine:select("SELECT `namespace`,`data` FROM `private_storage` WHERE `username`=?", user or "") do |
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99 if private == nil then private = {} end; |
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100 local namespace = row[1]; |
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101 local data, err = xml_parse(row[2]); |
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102 if data then |
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103 assert(namespace == data.attr.xmlns, "Wrong namespace in private data!"); |
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104 local key = data.name..":"..data.attr.xmlns; |
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105 private[key] = stanza_preserialize(data); |
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106 end |
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107 end |
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108 return private; |
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109 end |
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110 end |
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111 |
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112 --- Key/value store API (default store type) |
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113 |
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114 local keyval_store = {}; |
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115 keyval_store.__index = keyval_store; |
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116 function keyval_store:get(username) |
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117 user, store = username, self.store; |
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118 local ok, result = engine:transaction(keyval_store_get); |
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119 if not ok then |
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120 module:log("error", "Unable to read from database %s store for %s: %s", store, username or "<host>", result); |
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121 return nil, result; |
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122 end |
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123 return result; |
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124 end |
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125 |
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126 function keyval_store:users() |
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127 local ok, result = engine:transaction(function() |
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128 return engine:select("SELECT `username` FROM `users`"); |
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129 end); |
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130 if not ok then return ok, result end |
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131 return iterator(result); |
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132 end |
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133 |
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134 local stores = { |
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135 keyval = keyval_store; |
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136 }; |
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137 |
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138 --- Implement storage driver API |
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139 |
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140 -- FIXME: Some of these operations need to operate on the archive store(s) too |
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141 |
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142 local driver = {}; |
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143 |
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144 function driver:open(store, typ) |
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145 local store_mt = stores[typ or "keyval"]; |
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146 if store_mt then |
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147 return setmetatable({ store = store }, store_mt); |
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148 end |
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149 return nil, "unsupported-store"; |
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150 end |
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151 |
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152 function driver:stores(username) |
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153 local query = "SELECT 'accounts', 'roster', 'vcard', 'private'"; |
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154 if username == true or not username then |
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155 username = ""; |
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156 end |
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157 local ok, result = engine:transaction(function() |
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158 return engine:select(query, host, username); |
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159 end); |
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160 if not ok then return ok, result end |
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161 return iterator(result); |
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162 end |
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163 |
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164 --- Initialization |
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165 |
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166 |
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167 local function normalize_params(params) |
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168 if params.driver == "SQLite3" then |
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169 if params.database ~= ":memory:" then |
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170 params.database = resolve_relative_path(prosody.paths.data or ".", params.database or "prosody.sqlite"); |
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171 end |
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172 end |
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173 assert(params.driver and params.database, "Configuration error: Both the SQL driver and the database need to be specified"); |
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174 return params; |
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175 end |
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176 |
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177 function module.load() |
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178 if prosody.prosodyctl then return; end |
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179 local engines = module:shared("/*/sql/connections"); |
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180 local params = normalize_params(module:get_option("sql", default_params)); |
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181 engine = engines[sql.db2uri(params)]; |
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182 if not engine then |
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183 module:log("debug", "Creating new engine"); |
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184 engine = sql:create_engine(params); |
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185 engines[sql.db2uri(params)] = engine; |
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186 end |
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187 |
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188 module:provides("storage", driver); |
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189 end |