prosody
08560575762f
plugins/mod_storage_sql.lua

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plugins/mod_storage_sql.lua @ 4105:08560575762f

mod_storage_sql: Reconnect in all cases, and rollback on error.
author Waqas Hussain <waqas20@gmail.com>
date Mon, 10 Jan 2011 21:07:59 +0500
parent 4101:06778bc27d53
child 4109:d26db1f936f8
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 DBI;
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32 local connection;
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33 local host,user,store = module.host;
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34 local params = module:get_option("sql");
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35
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36 local resolve_relative_path = require "core.configmanager".resolve_relative_path;
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37
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38 local function test_connection()
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39 if not connection then return nil; end
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40 if connection:ping() then
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41 return true;
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42 else
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43 module:log("debug", "Database connection closed");
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44 connection = nil;
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45 end
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46 end
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47 local function connect()
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48 if not test_connection() then
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49 prosody.unlock_globals();
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50 local dbh, err = DBI.Connect(
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51 params.driver, params.database,
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52 params.username, params.password,
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53 params.host, params.port
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54 );
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55 prosody.lock_globals();
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56 if not dbh then
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57 module:log("debug", "Database connection failed: %s", tostring(err));
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58 return nil, err;
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59 end
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60 module:log("debug", "Successfully connected to database");
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61 dbh:autocommit(false); -- don't commit automatically
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62 connection = dbh;
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63 return connection;
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64 end
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65 end
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66
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67 do -- process options to get a db connection
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68 DBI = require "DBI";
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69
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70 params = params or { driver = "SQLite3" };
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71
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72 if params.driver == "SQLite3" then
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73 params.database = resolve_relative_path(prosody.paths.data or ".", params.database or "prosody.sqlite");
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74 end
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75
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76 assert(params.driver and params.database, "Both the SQL driver and the database need to be specified");
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77
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78 assert(connect());
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79
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80 -- Automatically create table, ignore failure (table probably already exists)
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81 local create_sql = "CREATE TABLE `prosody` (`host` TEXT, `user` TEXT, `store` TEXT, `key` TEXT, `type` TEXT, `value` TEXT);";
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82 if params.driver == "PostgreSQL" then
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83 create_sql = create_sql:gsub("`", "\"");
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84 end
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85
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86 local stmt = connection:prepare(create_sql);
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87 if stmt then
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88 local ok = stmt:execute();
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89 local commit_ok = connection:commit();
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90 if ok and commit_ok then
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91 module:log("info", "Initialized new %s database with prosody table", params.driver);
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92 end
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93 end
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94 end
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95
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96 local function serialize(value)
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97 local t = type(value);
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98 if t == "string" or t == "boolean" or t == "number" then
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99 return t, tostring(value);
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100 elseif t == "table" then
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101 local value,err = json.encode(value);
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102 if value then return "json", value; end
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103 return nil, err;
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104 end
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105 return nil, "Unhandled value type: "..t;
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106 end
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107 local function deserialize(t, value)
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108 if t == "string" then return value;
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109 elseif t == "boolean" then
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110 if value == "true" then return true;
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111 elseif value == "false" then return false; end
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112 elseif t == "number" then return tonumber(value);
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113 elseif t == "json" then
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114 return json.decode(value);
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115 end
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116 end
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117
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118 local function getsql(sql, ...)
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119 if params.driver == "PostgreSQL" then
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120 sql = sql:gsub("`", "\"");
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121 end
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122 -- do prepared statement stuff
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123 local stmt, err = connection:prepare(sql);
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124 if not stmt and not test_connection() then error("connection failed"); end
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125 if not stmt then module:log("error", "QUERY FAILED: %s %s", err, debug.traceback()); return nil, err; end
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126 -- run query
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127 local ok, err = stmt:execute(host or "", user or "", store or "", ...);
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128 if not ok and not test_connection() then error("connection failed"); end
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129 if not ok then return nil, err; end
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130
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131 return stmt;
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132 end
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133 local function setsql(sql, ...)
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134 local stmt, err = getsql(sql, ...);
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135 if not stmt then return stmt, err; end
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136 return stmt:affected();
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137 end
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138 local function transact(...)
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139 -- ...
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140 end
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141 local function rollback(...)
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142 if connection then connection:rollback(); end -- FIXME check for rollback error?
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143 return ...;
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144 end
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145 local function commit(...)
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146 if not connection:commit() then return nil, "SQL commit failed"; end
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147 return ...;
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148 end
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149
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150 local function keyval_store_get()
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151 local stmt, err = getsql("SELECT * FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=?");
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152 if not stmt then return rollback(nil, err); end
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153
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154 local haveany;
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155 local result = {};
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156 for row in stmt:rows(true) do
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157 haveany = true;
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158 local k = row.key;
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159 local v = deserialize(row.type, row.value);
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160 if k and v then
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161 if k ~= "" then result[k] = v; elseif type(v) == "table" then
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162 for a,b in pairs(v) do
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163 result[a] = b;
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164 end
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165 end
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166 end
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167 end
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168 return commit(haveany and result or nil);
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169 end
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170 local function keyval_store_set(data)
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171 local affected, err = setsql("DELETE FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=?");
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172 if not affected then return rollback(affected, err); end
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173
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174 if data and next(data) ~= nil then
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175 local extradata = {};
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176 for key, value in pairs(data) do
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177 if type(key) == "string" and key ~= "" then
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178 local t, value = serialize(value);
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179 if not t then return rollback(t, value); end
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180 local ok, err = setsql("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", key, t, value);
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181 if not ok then return rollback(ok, err); end
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182 else
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183 extradata[key] = value;
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184 end
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185 end
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186 if next(extradata) ~= nil then
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187 local t, extradata = serialize(extradata);
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188 if not t then return rollback(t, extradata); end
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189 local ok, err = setsql("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", "", t, extradata);
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190 if not ok then return rollback(ok, err); end
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191 end
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192 end
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193 return commit(true);
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194 end
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195
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196 local keyval_store = {};
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diff changeset
197 keyval_store.__index = keyval_store;
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diff changeset
198 function keyval_store:get(username)
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199 user,store = username,self.store;
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200 if not connection and not connect() then return nil, "Unable to connect to database"; end
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201 local success, ret, err = xpcall(keyval_store_get, debug.traceback);
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202 if not connection and connect() then
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diff changeset
203 success, ret, err = xpcall(keyval_store_get, debug.traceback);
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204 end
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diff changeset
205 if success then return ret, err; else return rollback(nil, ret); end
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parents: 4070
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206 end
79fd38ab224b mod_storage_sql: Catch Lua errors during SQL transactions, and rollback.
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parents: 4070
diff changeset
207 function keyval_store:set(username, data)
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parents: 4070
diff changeset
208 user,store = username,self.store;
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diff changeset
209 if not connection and not connect() then return nil, "Unable to connect to database"; end
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diff changeset
210 local success, ret, err = xpcall(function() return keyval_store_set(data); end, debug.traceback);
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diff changeset
211 if not connection and connect() then
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diff changeset
212 success, ret, err = xpcall(function() return keyval_store_set(data); end, debug.traceback);
08560575762f mod_storage_sql: Reconnect in all cases, and rollback on error.
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213 end
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diff changeset
214 if success then return ret, err; else return rollback(nil, ret); end
79fd38ab224b mod_storage_sql: Catch Lua errors during SQL transactions, and rollback.
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parents: 4070
diff changeset
215 end
79fd38ab224b mod_storage_sql: Catch Lua errors during SQL transactions, and rollback.
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parents: 4070
diff changeset
216
79fd38ab224b mod_storage_sql: Catch Lua errors during SQL transactions, and rollback.
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parents: 4070
diff changeset
217 local function map_store_get(key)
4101
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parents: 4096
diff changeset
218 local stmt, err = getsql("SELECT * FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", key or "");
4105
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diff changeset
219 if not stmt then return rollback(nil, err); end
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220
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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221 local haveany;
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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diff changeset
222 local result = {};
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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diff changeset
223 for row in stmt:rows(true) do
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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diff changeset
224 haveany = true;
4045
054e05b27611 mod_storage_sql: Remove the subkey column from the Prosody table, and make the map store compatible with the key-value store.
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diff changeset
225 local k = row.key;
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226 local v = deserialize(row.type, row.value);
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parents: 4044
diff changeset
227 if k and v then
054e05b27611 mod_storage_sql: Remove the subkey column from the Prosody table, and make the map store compatible with the key-value store.
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parents: 4044
diff changeset
228 if k ~= "" then result[k] = v; elseif type(v) == "table" then
3851
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diff changeset
229 for a,b in pairs(v) do
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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diff changeset
230 result[a] = b;
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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231 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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parents:
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232 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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parents:
diff changeset
233 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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parents:
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234 end
4045
054e05b27611 mod_storage_sql: Remove the subkey column from the Prosody table, and make the map store compatible with the key-value store.
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parents: 4044
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235 return commit(haveany and result[key] or nil);
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diff changeset
236 end
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diff changeset
237 local function map_store_set(key, data)
4101
06778bc27d53 mod_storage_sql: Create table automatically for all databases now, not just SQLite. Also rename table from Prosody -> prosody.
Matthew Wild <mwild1@gmail.com>
parents: 4096
diff changeset
238 local affected, err = setsql("DELETE FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", key or "");
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diff changeset
239 if not affected then return rollback(affected, err); end
3851
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parents:
diff changeset
240
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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parents:
diff changeset
241 if data and next(data) ~= nil then
4045
054e05b27611 mod_storage_sql: Remove the subkey column from the Prosody table, and make the map store compatible with the key-value store.
Waqas Hussain <waqas20@gmail.com>
parents: 4044
diff changeset
242 if type(key) == "string" and key ~= "" then
054e05b27611 mod_storage_sql: Remove the subkey column from the Prosody table, and make the map store compatible with the key-value store.
Waqas Hussain <waqas20@gmail.com>
parents: 4044
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243 local t, value = serialize(data);
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244 if not t then return rollback(t, value); end
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245 local ok, err = setsql("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", key, t, value);
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246 if not ok then return rollback(ok, err); end
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247 else
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248 -- TODO non-string keys
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249 end
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250 end
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251 return commit(true);
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252 end
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253
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254 local map_store = {};
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255 map_store.__index = map_store;
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256 function map_store:get(username, key)
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257 user,store = username,self.store;
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258 local success, ret, err = xpcall(function() return map_store_get(key); end, debug.traceback);
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259 if success then return ret, err; else return rollback(nil, ret); end
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260 end
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261 function map_store:set(username, key, data)
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262 user,store = username,self.store;
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263 local success, ret, err = xpcall(function() return map_store_set(key, data); end, debug.traceback);
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264 if success then return ret, err; else return rollback(nil, ret); end
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265 end
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266
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267 local list_store = {};
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268 list_store.__index = list_store;
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269 function list_store:scan(username, from, to, jid, typ)
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270 user,store = username,self.store;
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271
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272 local cols = {"from", "to", "jid", "typ"};
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273 local vals = { from , to , jid , typ };
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274 local stmt, err;
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275 local query = "SELECT * FROM `prosodyarchive` WHERE `host`=? AND `user`=? AND `store`=?";
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276
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277 query = query.." ORDER BY time";
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278 --local stmt, err = getsql("SELECT * FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", key or "");
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279
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280 return nil, "not-implemented"
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281 end
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282
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283 local driver = { name = "sql" };
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284
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285 function driver:open(store, typ)
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286 if not typ then -- default key-value store
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287 return setmetatable({ store = store }, keyval_store);
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288 end
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289 return nil, "unsupported-store";
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290 end
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291
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292 module:add_item("data-driver", driver);