prosody
3b991ceb228e
plugins/mod_storage_sql.lua

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plugins/mod_storage_sql.lua @ 4096:3b991ceb228e

mod_storage_sql: Make the 'database' value for the SQLite3 driver relative to the data path
author Matthew Wild <mwild1@gmail.com>
date Fri, 07 Jan 2011 11:57:48 +0000
parent 4073:79fd38ab224b
child 4101:06778bc27d53
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1
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2 --[[
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3
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4 DB Tables:
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5 Prosody - key-value, map
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6 | host | user | store | key | type | value |
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7 ProsodyArchive - list
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8 | host | user | store | key | time | stanzatype | jsonvalue |
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10 Mapping:
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11 Roster - Prosody
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12 | host | user | "roster" | "contactjid" | type | value |
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13 | host | user | "roster" | NULL | "json" | roster[false] data |
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14 Account - Prosody
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15 | host | user | "accounts" | "username" | type | value |
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17 Offline - ProsodyArchive
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18 | host | user | "offline" | "contactjid" | time | "message" | json|XML |
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20 ]]
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22 local type = type;
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23 local tostring = tostring;
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24 local tonumber = tonumber;
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25 local pairs = pairs;
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26 local next = next;
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27 local setmetatable = setmetatable;
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28 local xpcall = xpcall;
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29 local json = require "util.json";
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31 local connection;
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32 local host,user,store = module.host;
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33 local params = module:get_option("sql");
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34
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35 local resolve_relative_path = require "core.configmanager".resolve_relative_path;
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36
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37 do -- process options to get a db connection
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38 local DBI = require "DBI";
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39
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40 params = params or { driver = "SQLite3" };
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42 if params.driver == "SQLite3" then
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43 params.database = resolve_relative_path(prosody.paths.data or ".", params.database or "prosody.sqlite");
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44 end
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46 assert(params.driver and params.database, "Both the SQL driver and the database need to be specified");
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48 prosody.unlock_globals();
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49 local dbh, err = DBI.Connect(
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50 params.driver, params.database,
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51 params.username, params.password,
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52 params.host, params.port
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53 );
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54 prosody.lock_globals();
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55 assert(dbh, err);
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56
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57 dbh:autocommit(false); -- don't commit automatically
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58 connection = dbh;
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59
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60 if params.driver == "SQLite3" then -- auto initialize
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61 local stmt = assert(connection:prepare("SELECT COUNT(*) FROM `sqlite_master` WHERE `type`='table' AND `name`='Prosody';"));
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62 local ok = assert(stmt:execute());
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63 local count = stmt:fetch()[1];
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64 if count == 0 then
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65 local stmt = assert(connection:prepare("CREATE TABLE `Prosody` (`host` TEXT, `user` TEXT, `store` TEXT, `key` TEXT, `type` TEXT, `value` TEXT);"));
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66 assert(stmt:execute());
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67 module:log("debug", "Initialized new SQLite3 database");
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68 end
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69 assert(connection:commit());
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70 --print("===", json.encode())
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71 end
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72 end
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73
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74 local function serialize(value)
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75 local t = type(value);
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76 if t == "string" or t == "boolean" or t == "number" then
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77 return t, tostring(value);
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78 elseif t == "table" then
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79 local value,err = json.encode(value);
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80 if value then return "json", value; end
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81 return nil, err;
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82 end
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83 return nil, "Unhandled value type: "..t;
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84 end
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85 local function deserialize(t, value)
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86 if t == "string" then return value;
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87 elseif t == "boolean" then
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88 if value == "true" then return true;
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89 elseif value == "false" then return false; end
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90 elseif t == "number" then return tonumber(value);
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91 elseif t == "json" then
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92 return json.decode(value);
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93 end
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94 end
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95
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96 local function getsql(sql, ...)
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97 if params.driver == "PostgreSQL" then
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98 sql = sql:gsub("`", "\"");
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99 end
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100 -- do prepared statement stuff
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101 local stmt, err = connection:prepare(sql);
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102 if not stmt then module:log("error", "QUERY FAILED: %s %s", err, debug.traceback()); return nil, err; end
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103 -- run query
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104 local ok, err = stmt:execute(host or "", user or "", store or "", ...);
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105 if not ok then return nil, err; end
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106
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107 return stmt;
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108 end
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109 local function setsql(sql, ...)
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110 local stmt, err = getsql(sql, ...);
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111 if not stmt then return stmt, err; end
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112 return stmt:affected();
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113 end
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114 local function transact(...)
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115 -- ...
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116 end
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117 local function rollback(...)
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118 connection:rollback(); -- FIXME check for rollback error?
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119 return ...;
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120 end
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121 local function commit(...)
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122 if not connection:commit() then return nil, "SQL commit failed"; end
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123 return ...;
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124 end
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125
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126 local function keyval_store_get()
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127 local stmt, err = getsql("SELECT * FROM `Prosody` WHERE `host`=? AND `user`=? AND `store`=?");
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128 if not stmt then return nil, err; end
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129
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130 local haveany;
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131 local result = {};
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132 for row in stmt:rows(true) do
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133 haveany = true;
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134 local k = row.key;
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135 local v = deserialize(row.type, row.value);
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136 if k and v then
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137 if k ~= "" then result[k] = v; elseif type(v) == "table" then
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138 for a,b in pairs(v) do
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139 result[a] = b;
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140 end
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141 end
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142 end
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143 end
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144 return commit(haveany and result or nil);
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145 end
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146 local function keyval_store_set(data)
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147 local affected, err = setsql("DELETE FROM `Prosody` WHERE `host`=? AND `user`=? AND `store`=?");
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148
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149 if data and next(data) ~= nil then
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150 local extradata = {};
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151 for key, value in pairs(data) do
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152 if type(key) == "string" and key ~= "" then
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153 local t, value = serialize(value);
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154 if not t then return rollback(t, value); end
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155 local ok, err = setsql("INSERT INTO `Prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", key, t, value);
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156 if not ok then return rollback(ok, err); end
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157 else
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158 extradata[key] = value;
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159 end
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160 end
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161 if next(extradata) ~= nil then
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162 local t, extradata = serialize(extradata);
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163 if not t then return rollback(t, extradata); end
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164 local ok, err = setsql("INSERT INTO `Prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", "", t, extradata);
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165 if not ok then return rollback(ok, err); end
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166 end
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167 end
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168 return commit(true);
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169 end
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170
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171 local keyval_store = {};
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172 keyval_store.__index = keyval_store;
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173 function keyval_store:get(username)
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174 user,store = username,self.store;
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175 local success, ret, err = xpcall(keyval_store_get, debug.traceback);
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176 if success then return ret, err; else return rollback(nil, ret); end
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177 end
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178 function keyval_store:set(username, data)
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179 user,store = username,self.store;
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180 local success, ret, err = xpcall(function() return keyval_store_set(data); end, debug.traceback);
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181 if success then return ret, err; else return rollback(nil, ret); end
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182 end
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183
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184 local function map_store_get(key)
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185 local stmt, err = getsql("SELECT * FROM `Prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", key or "");
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186 if not stmt then return nil, err; end
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187
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188 local haveany;
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189 local result = {};
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190 for row in stmt:rows(true) do
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191 haveany = true;
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192 local k = row.key;
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193 local v = deserialize(row.type, row.value);
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194 if k and v then
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195 if k ~= "" then result[k] = v; elseif type(v) == "table" then
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196 for a,b in pairs(v) do
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197 result[a] = b;
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198 end
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199 end
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200 end
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201 end
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202 return commit(haveany and result[key] or nil);
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203 end
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204 local function map_store_set(key, data)
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205 local affected, err = setsql("DELETE FROM `Prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", key or "");
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206
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207 if data and next(data) ~= nil then
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208 if type(key) == "string" and key ~= "" then
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209 local t, value = serialize(data);
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210 if not t then return rollback(t, value); end
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211 local ok, err = setsql("INSERT INTO `Prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", key, t, value);
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212 if not ok then return rollback(ok, err); end
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213 else
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214 -- TODO non-string keys
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215 end
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216 end
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217 return commit(true);
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218 end
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219
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220 local map_store = {};
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221 map_store.__index = map_store;
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222 function map_store:get(username, key)
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223 user,store = username,self.store;
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224 local success, ret, err = xpcall(function() return map_store_get(key); end, debug.traceback);
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225 if success then return ret, err; else return rollback(nil, ret); end
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226 end
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227 function map_store:set(username, key, data)
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228 user,store = username,self.store;
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229 local success, ret, err = xpcall(function() return map_store_set(key, data); end, debug.traceback);
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230 if success then return ret, err; else return rollback(nil, ret); end
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231 end
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232
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233 local list_store = {};
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234 list_store.__index = list_store;
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235 function list_store:scan(username, from, to, jid, typ)
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diff changeset
236 user,store = username,self.store;
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diff changeset
237
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238 local cols = {"from", "to", "jid", "typ"};
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diff changeset
239 local vals = { from , to , jid , typ };
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diff changeset
240 local stmt, err;
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241 local query = "SELECT * FROM `ProsodyArchive` WHERE `host`=? AND `user`=? AND `store`=?";
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242
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243 query = query.." ORDER BY time";
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244 --local stmt, err = getsql("SELECT * FROM `Prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", key or "");
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245
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246 return nil, "not-implemented"
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247 end
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248
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249 local driver = { name = "sql" };
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250
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251 function driver:open(store, typ)
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252 if not typ then -- default key-value store
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253 return setmetatable({ store = store }, keyval_store);
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254 end
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255 return nil, "unsupported-store";
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256 end
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257
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258 module:add_item("data-driver", driver);