prosody
43de2a3f723a
plugins/mod_storage_sql2.lua

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plugins/mod_storage_sql2.lua @ 5722:43de2a3f723a

Merge 0.9->trunk
author Kim Alvefur <zash@zash.se>
date Sat, 29 Jun 2013 22:49:56 +0200
parent 5711:254a9420e53d
child 5732:4aa1d6f5083a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1
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2 local json = require "util.json";
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3 local resolve_relative_path = require "core.configmanager".resolve_relative_path;
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4
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5 local mod_sql = module:require("sql");
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6 local params = module:get_option("sql");
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7
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8 local engine; -- TODO create engine
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10 local function create_table()
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11 --[[local Table,Column,Index = mod_sql.Table,mod_sql.Column,mod_sql.Index;
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12 local ProsodyTable = Table {
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13 name="prosody";
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14 Column { name="host", type="TEXT", nullable=false };
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15 Column { name="user", type="TEXT", nullable=false };
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16 Column { name="store", type="TEXT", nullable=false };
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17 Column { name="key", type="TEXT", nullable=false };
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18 Column { name="type", type="TEXT", nullable=false };
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19 Column { name="value", type="TEXT", nullable=false };
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20 Index { name="prosody_index", "host", "user", "store", "key" };
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21 };
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22 engine:transaction(function()
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23 ProsodyTable:create(engine);
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24 end);]]
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25 if not module:get_option("sql_manage_tables", true) then
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26 return;
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27 end
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29 local create_sql = "CREATE TABLE `prosody` (`host` TEXT, `user` TEXT, `store` TEXT, `key` TEXT, `type` TEXT, `value` TEXT);";
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30 if params.driver == "PostgreSQL" then
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31 create_sql = create_sql:gsub("`", "\"");
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32 elseif params.driver == "MySQL" then
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33 create_sql = create_sql:gsub("`value` TEXT", "`value` MEDIUMTEXT")
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34 :gsub(";$", " CHARACTER SET 'utf8' COLLATE 'utf8_bin';");
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35 end
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36
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37 local index_sql = "CREATE INDEX `prosody_index` ON `prosody` (`host`, `user`, `store`, `key`)";
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38 if params.driver == "PostgreSQL" then
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39 index_sql = index_sql:gsub("`", "\"");
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40 elseif params.driver == "MySQL" then
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41 index_sql = index_sql:gsub("`([,)])", "`(20)%1");
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42 end
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44 local success,err = engine:transaction(function()
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45 engine:execute(create_sql);
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46 engine:execute(index_sql);
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47 end);
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48 if not success then -- so we failed to create
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49 if params.driver == "MySQL" then
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50 success,err = engine:transaction(function()
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51 local result = engine:execute("SHOW COLUMNS FROM prosody WHERE Field='value' and Type='text'");
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52 if result:rowcount() > 0 then
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53 module:log("info", "Upgrading database schema...");
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54 engine:execute("ALTER TABLE prosody MODIFY COLUMN `value` MEDIUMTEXT");
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55 module:log("info", "Database table automatically upgraded");
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56 end
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57 return true;
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58 end);
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59 if not success then
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60 module:log("error", "Failed to check/upgrade database schema (%s), please see "
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61 .."http://prosody.im/doc/mysql for help",
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62 err or "unknown error");
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63 end
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64 end
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65 end
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66 end
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67 local function set_encoding()
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68 if params.driver ~= "SQLite3" then
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69 local set_names_query = "SET NAMES 'utf8';";
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70 if params.driver == "MySQL" then
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71 set_names_query = set_names_query:gsub(";$", " COLLATE 'utf8_bin';");
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72 end
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73 local success,err = engine:transaction(function() return engine:execute(set_names_query); end);
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74 if not success then
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75 module:log("error", "Failed to set database connection encoding to UTF8: %s", err);
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76 return;
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77 end
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78 if params.driver == "MySQL" then
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79 -- COMPAT w/pre-0.9: Upgrade tables to UTF-8 if not already
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80 local check_encoding_query = "SELECT `COLUMN_NAME`,`COLUMN_TYPE` FROM `information_schema`.`columns` WHERE `TABLE_NAME`='prosody' AND ( `CHARACTER_SET_NAME`!='utf8' OR `COLLATION_NAME`!='utf8_bin' );";
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81 local success,err = engine:transaction(function()
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82 local result = engine:execute(check_encoding_query);
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83 local n_bad_columns = result:rowcount();
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84 if n_bad_columns > 0 then
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85 module:log("warn", "Found %d columns in prosody table requiring encoding change, updating now...", n_bad_columns);
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86 local fix_column_query1 = "ALTER TABLE `prosody` CHANGE `%s` `%s` BLOB;";
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87 local fix_column_query2 = "ALTER TABLE `prosody` CHANGE `%s` `%s` %s CHARACTER SET 'utf8' COLLATE 'utf8_bin';";
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88 for row in result:rows() do
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89 local column_name, column_type = unpack(row);
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90 engine:execute(fix_column_query1:format(column_name, column_name));
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91 engine:execute(fix_column_query2:format(column_name, column_name, column_type));
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92 end
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93 module:log("info", "Database encoding upgrade complete!");
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94 end
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95 end);
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96 local success,err = engine:transaction(function() return engine:execute(check_encoding_query); end);
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97 if not success then
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98 module:log("error", "Failed to check/upgrade database encoding: %s", err or "unknown error");
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99 end
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100 end
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101 end
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102 end
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103
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104 do -- process options to get a db connection
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105 params = params or { driver = "SQLite3" };
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106
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107 if params.driver == "SQLite3" then
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108 params.database = resolve_relative_path(prosody.paths.data or ".", params.database or "prosody.sqlite");
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109 end
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110
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111 assert(params.driver and params.database, "Both the SQL driver and the database need to be specified");
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112
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113 --local dburi = db2uri(params);
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114 engine = mod_sql:create_engine(params);
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115
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116 -- Encoding mess
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117 set_encoding();
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118
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119 -- Automatically create table, ignore failure (table probably already exists)
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120 create_table();
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121 end
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122
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123 local function serialize(value)
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124 local t = type(value);
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125 if t == "string" or t == "boolean" or t == "number" then
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126 return t, tostring(value);
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127 elseif t == "table" then
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128 local value,err = json.encode(value);
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129 if value then return "json", value; end
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130 return nil, err;
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131 end
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132 return nil, "Unhandled value type: "..t;
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133 end
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134 local function deserialize(t, value)
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135 if t == "string" then return value;
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136 elseif t == "boolean" then
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137 if value == "true" then return true;
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138 elseif value == "false" then return false; end
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139 elseif t == "number" then return tonumber(value);
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140 elseif t == "json" then
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141 return json.decode(value);
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142 end
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143 end
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144
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145 local host = module.host;
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146 local user, store;
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147
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148 local function keyval_store_get()
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149 local haveany;
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150 local result = {};
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151 for row in engine:select("SELECT `key`,`type`,`value` FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=?", host, user, store) do
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152 haveany = true;
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153 local k = row[1];
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154 local v = deserialize(row[2], row[3]);
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diff changeset
155 if k and v then
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156 if k ~= "" then result[k] = v; elseif type(v) == "table" then
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diff changeset
157 for a,b in pairs(v) do
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diff changeset
158 result[a] = b;
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159 end
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160 end
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161 end
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162 end
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163 if haveany then
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164 return result;
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165 end
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166 end
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167 local function keyval_store_set(data)
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diff changeset
168 engine:delete("DELETE FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=?", host, user, store);
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diff changeset
169
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diff changeset
170 if data and next(data) ~= nil then
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171 local extradata = {};
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diff changeset
172 for key, value in pairs(data) do
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173 if type(key) == "string" and key ~= "" then
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174 local t, value = serialize(value);
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diff changeset
175 assert(t, value);
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diff changeset
176 engine:insert("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", host, user, store, key, t, value);
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177 else
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diff changeset
178 extradata[key] = value;
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179 end
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180 end
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diff changeset
181 if next(extradata) ~= nil then
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182 local t, extradata = serialize(extradata);
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183 assert(t, extradata);
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184 engine:insert("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", host, user, store, "", t, extradata);
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185 end
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186 end
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187 return true;
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188 end
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diff changeset
189
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diff changeset
190 local keyval_store = {};
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191 keyval_store.__index = keyval_store;
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192 function keyval_store:get(username)
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193 user,store = username,self.store;
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194 return select(2, engine:transaction(keyval_store_get));
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195 end
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196 function keyval_store:set(username, data)
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197 user,store = username,self.store;
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198 return engine:transaction(function()
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199 return keyval_store_set(data);
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200 end);
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201 end
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202 function keyval_store:users()
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203 return engine:transaction(function()
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204 return engine:select("SELECT DISTINCT `user` FROM `prosody` WHERE `host`=? AND `store`=?", host, self.store);
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205 end);
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206 end
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207
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208 local driver = {};
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209
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210 function driver:open(store, typ)
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211 if not typ then -- default key-value store
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212 return setmetatable({ store = store }, keyval_store);
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213 end
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214 return nil, "unsupported-store";
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215 end
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216
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217 function driver:stores(username)
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218 local sql = "SELECT DISTINCT `store` FROM `prosody` WHERE `host`=? AND `user`" ..
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219 (username == true and "!=?" or "=?");
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220 if username == true or not username then
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221 username = "";
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222 end
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223 return engine:transaction(function()
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224 return engine:select(sql, host, username);
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225 end);
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226 end
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227
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228 function driver:purge(username)
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229 return engine:transaction(function()
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230 local stmt,err = engine:delete("DELETE FROM `prosody` WHERE `host`=? AND `user`=?", host, username);
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231 return true,err;
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232 end);
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233 end
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234
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235 module:provides("storage", driver);
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236
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237