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annotate mod_storage_ejabberdsql_readonly/mod_storage_ejabberdsql_readonly.lua @ 4923:c83b009b5bc5

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mod_rest: Add configuration of which stanzas to route to callback Makes it simpler to build APIs that only handle a certain kind of stanzas, letting them be handled by the unhandled stanza handler instead of having to write code to ignore certain kinds of stanzas.
author Kim Alvefur <zash@zash.se>
date Sat, 09 Apr 2022 01:04:25 +0200
parents e0663dcd934d
children 7c264a2cb970
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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