Annotate

plugins/mod_storage_sql.lua @ 4295:da4844ab289f

Merge 0.8->trunk
author Matthew Wild <mwild1@gmail.com>
date Fri, 03 Jun 2011 00:58:09 +0100
parent 4285:c806a599224a
child 4297:3421dfaa8188
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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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16
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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 local function create_table()
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68 local create_sql = "CREATE TABLE `prosody` (`host` TEXT, `user` TEXT, `store` TEXT, `key` TEXT, `type` TEXT, `value` TEXT);";
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69 if params.driver == "PostgreSQL" then
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70 create_sql = create_sql:gsub("`", "\"");
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71 elseif params.driver == "MySQL" then
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72 create_sql = create_sql:gsub("`value` TEXT", "`value` MEDIUMTEXT");
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73 end
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74
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75 local stmt = connection:prepare(create_sql);
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76 if stmt then
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77 local ok = stmt:execute();
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78 local commit_ok = connection:commit();
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79 if ok and commit_ok then
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80 module:log("info", "Initialized new %s database with prosody table", params.driver);
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81 local index_sql = "CREATE INDEX `prosody_index` ON `prosody` (`host`, `user`, `store`, `key`)";
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82 if params.driver == "PostgreSQL" then
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83 index_sql = index_sql:gsub("`", "\"");
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84 elseif params.driver == "MySQL" then
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85 index_sql = index_sql:gsub("`([,)])", "`(20)%1");
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86 end
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87 local stmt, err = connection:prepare(index_sql);
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88 local ok, commit_ok, commit_err;
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89 if stmt then
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90 ok, err = stmt:execute();
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91 commit_ok, commit_err = connection:commit();
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92 end
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93 if not(ok and commit_ok) then
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94 module:log("warn", "Failed to create index (%s), lookups may not be optimised", err or commit_err);
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95 end
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96 else -- COMPAT: Upgrade tables from 0.8.0
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97 -- Failed to create, but check existing MySQL table here
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98 local stmt = connection:prepare("SHOW COLUMNS FROM prosody WHERE Field='value' and Type='text'");
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99 local ok = stmt:execute();
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100 local commit_ok = connection:commit();
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101 if ok and commit_ok then
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102 if stmt:rowcount() > 0 then
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103 local stmt = connection:prepare("ALTER TABLE prosody MODIFY COLUMN `value` MEDIUMTEXT");
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104 local ok = stmt:execute();
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105 local commit_ok = connection:commit();
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106 if ok and commit_ok then
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107 module:log("info", "Database table automatically upgraded");
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108 end
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109 end
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110 repeat until not stmt:fetch();
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111 end
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112 end
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113 end
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114 end
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115
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116 do -- process options to get a db connection
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117 local ok;
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118 prosody.unlock_globals();
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119 ok, DBI = pcall(require, "DBI");
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120 if not ok then
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121 package.loaded["DBI"] = {};
8a271b3fcaa7 mod_storage_sql: Display friendlier error when LuaDBI is missing
Matthew Wild <mwild1@gmail.com>
parents: 4109
diff changeset
122 module:log("error", "Failed to load the LuaDBI library for accessing SQL databases: %s", DBI);
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parents: 4109
diff changeset
123 module:log("error", "More information on installing LuaDBI can be found at http://prosody.im/doc/depends#luadbi");
8a271b3fcaa7 mod_storage_sql: Display friendlier error when LuaDBI is missing
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parents: 4109
diff changeset
124 end
8a271b3fcaa7 mod_storage_sql: Display friendlier error when LuaDBI is missing
Matthew Wild <mwild1@gmail.com>
parents: 4109
diff changeset
125 prosody.lock_globals();
8a271b3fcaa7 mod_storage_sql: Display friendlier error when LuaDBI is missing
Matthew Wild <mwild1@gmail.com>
parents: 4109
diff changeset
126 if not ok or not DBI.Connect then
8a271b3fcaa7 mod_storage_sql: Display friendlier error when LuaDBI is missing
Matthew Wild <mwild1@gmail.com>
parents: 4109
diff changeset
127 return; -- Halt loading of this module
8a271b3fcaa7 mod_storage_sql: Display friendlier error when LuaDBI is missing
Matthew Wild <mwild1@gmail.com>
parents: 4109
diff changeset
128 end
3851
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129
4096
3b991ceb228e mod_storage_sql: Make the 'database' value for the SQLite3 driver relative to the data path
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parents: 4073
diff changeset
130 params = params or { driver = "SQLite3" };
3b991ceb228e mod_storage_sql: Make the 'database' value for the SQLite3 driver relative to the data path
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parents: 4073
diff changeset
131
3b991ceb228e mod_storage_sql: Make the 'database' value for the SQLite3 driver relative to the data path
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parents: 4073
diff changeset
132 if params.driver == "SQLite3" then
3b991ceb228e mod_storage_sql: Make the 'database' value for the SQLite3 driver relative to the data path
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parents: 4073
diff changeset
133 params.database = resolve_relative_path(prosody.paths.data or ".", params.database or "prosody.sqlite");
3b991ceb228e mod_storage_sql: Make the 'database' value for the SQLite3 driver relative to the data path
Matthew Wild <mwild1@gmail.com>
parents: 4073
diff changeset
134 end
3b991ceb228e mod_storage_sql: Make the 'database' value for the SQLite3 driver relative to the data path
Matthew Wild <mwild1@gmail.com>
parents: 4073
diff changeset
135
3b991ceb228e mod_storage_sql: Make the 'database' value for the SQLite3 driver relative to the data path
Matthew Wild <mwild1@gmail.com>
parents: 4073
diff changeset
136 assert(params.driver and params.database, "Both the SQL driver and the database need to be specified");
3851
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137
4105
08560575762f mod_storage_sql: Reconnect in all cases, and rollback on error.
Waqas Hussain <waqas20@gmail.com>
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diff changeset
138 assert(connect());
3854
5a1551d604b1 mod_storage_sql: Auto-initialize SQLite3 database.
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parents: 3853
diff changeset
139
4101
06778bc27d53 mod_storage_sql: Create table automatically for all databases now, not just SQLite. Also rename table from Prosody -> prosody.
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parents: 4096
diff changeset
140 -- Automatically create table, ignore failure (table probably already exists)
4109
d26db1f936f8 mod_storage_sql: Create index when creating a new table
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parents: 4105
diff changeset
141 create_table();
3851
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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142 end
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parents:
diff changeset
143
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parents:
diff changeset
144 local function serialize(value)
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parents:
diff changeset
145 local t = type(value);
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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parents:
diff changeset
146 if t == "string" or t == "boolean" or t == "number" then
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parents:
diff changeset
147 return t, tostring(value);
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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diff changeset
148 elseif t == "table" then
4048
c64b0aefb922 mod_storage_sql: Use util.json instead of util.serialization.
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parents: 4046
diff changeset
149 local value,err = json.encode(value);
3851
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150 if value then return "json", value; end
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diff changeset
151 return nil, err;
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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diff changeset
152 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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diff changeset
153 return nil, "Unhandled value type: "..t;
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diff changeset
154 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
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diff changeset
155 local function deserialize(t, value)
3863
2a9475dce7ff mod_storage_sql: Fixed the deserialization of string-typed values.
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parents: 3854
diff changeset
156 if t == "string" then return value;
3851
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diff changeset
157 elseif t == "boolean" then
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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diff changeset
158 if value == "true" then return true;
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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parents:
diff changeset
159 elseif value == "false" then return false; end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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parents:
diff changeset
160 elseif t == "number" then return tonumber(value);
3891
f82af9f7f1cd mod_storage_sql: Fix a couple of bugs in "JSON" decoding
Matthew Wild <mwild1@gmail.com>
parents: 3864
diff changeset
161 elseif t == "json" then
4048
c64b0aefb922 mod_storage_sql: Use util.json instead of util.serialization.
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parents: 4046
diff changeset
162 return json.decode(value);
3851
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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parents:
diff changeset
163 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
164 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
165
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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parents:
diff changeset
166 local function getsql(sql, ...)
4044
61ae809da8ee mod_storage_sql: Dynamically replace backquotes with double quotes when connecting to PostgreSQL...
Waqas Hussain <waqas20@gmail.com>
parents: 4043
diff changeset
167 if params.driver == "PostgreSQL" then
61ae809da8ee mod_storage_sql: Dynamically replace backquotes with double quotes when connecting to PostgreSQL...
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parents: 4043
diff changeset
168 sql = sql:gsub("`", "\"");
61ae809da8ee mod_storage_sql: Dynamically replace backquotes with double quotes when connecting to PostgreSQL...
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parents: 4043
diff changeset
169 end
3851
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parents:
diff changeset
170 -- do prepared statement stuff
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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parents:
diff changeset
171 local stmt, err = connection:prepare(sql);
4105
08560575762f mod_storage_sql: Reconnect in all cases, and rollback on error.
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parents: 4101
diff changeset
172 if not stmt and not test_connection() then error("connection failed"); end
4046
467e73951610 mod_storage_sql: Log an error on query failure.
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parents: 4045
diff changeset
173 if not stmt then module:log("error", "QUERY FAILED: %s %s", err, debug.traceback()); return nil, err; end
3851
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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parents:
diff changeset
174 -- run query
4042
3294f12ea602 mod_storage_sql: Quote identifiers in SQL with backquotes, and use the empty string for NULL, and '=' instead of 'IS' for comparison, to work with MySQL's limitations...
Waqas Hussain <waqas20@gmail.com>
parents: 3891
diff changeset
175 local ok, err = stmt:execute(host or "", user or "", store or "", ...);
4105
08560575762f mod_storage_sql: Reconnect in all cases, and rollback on error.
Waqas Hussain <waqas20@gmail.com>
parents: 4101
diff changeset
176 if not ok and not test_connection() then error("connection failed"); end
3851
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parents:
diff changeset
177 if not ok then return nil, err; end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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parents:
diff changeset
178
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parents:
diff changeset
179 return stmt;
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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parents:
diff changeset
180 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
181 local function setsql(sql, ...)
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
182 local stmt, err = getsql(sql, ...);
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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parents:
diff changeset
183 if not stmt then return stmt, err; end
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parents:
diff changeset
184 return stmt:affected();
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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parents:
diff changeset
185 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
186 local function transact(...)
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
187 -- ...
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
188 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
189 local function rollback(...)
4105
08560575762f mod_storage_sql: Reconnect in all cases, and rollback on error.
Waqas Hussain <waqas20@gmail.com>
parents: 4101
diff changeset
190 if connection then connection:rollback(); end -- FIXME check for rollback error?
3851
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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parents:
diff changeset
191 return ...;
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
192 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
193 local function commit(...)
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
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parents:
diff changeset
194 if not connection:commit() then return nil, "SQL commit failed"; end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
195 return ...;
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
196 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
197
4073
79fd38ab224b mod_storage_sql: Catch Lua errors during SQL transactions, and rollback.
Waqas Hussain <waqas20@gmail.com>
parents: 4070
diff changeset
198 local function keyval_store_get()
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
199 local stmt, err = getsql("SELECT * FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=?");
4105
08560575762f mod_storage_sql: Reconnect in all cases, and rollback on error.
Waqas Hussain <waqas20@gmail.com>
parents: 4101
diff changeset
200 if not stmt then return rollback(nil, err); end
3851
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
201
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
202 local haveany;
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
203 local result = {};
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
204 for row in stmt:rows(true) do
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
205 haveany = true;
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
206 local k = row.key;
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
207 local v = deserialize(row.type, row.value);
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
208 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.
Waqas Hussain <waqas20@gmail.com>
parents: 4044
diff changeset
209 if k ~= "" then result[k] = v; elseif type(v) == "table" then
3851
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
210 for a,b in pairs(v) do
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
211 result[a] = b;
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
212 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
213 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
214 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
215 end
4043
d3f5c60a72b1 mod_storage_sql: Call commit() after all SQL statements, including SELECT, to get SQLite to drop its locks.
Waqas Hussain <waqas20@gmail.com>
parents: 4042
diff changeset
216 return commit(haveany and result or nil);
3851
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
217 end
4073
79fd38ab224b mod_storage_sql: Catch Lua errors during SQL transactions, and rollback.
Waqas Hussain <waqas20@gmail.com>
parents: 4070
diff changeset
218 local function keyval_store_set(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
219 local affected, err = setsql("DELETE FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=?");
4105
08560575762f mod_storage_sql: Reconnect in all cases, and rollback on error.
Waqas Hussain <waqas20@gmail.com>
parents: 4101
diff changeset
220 if not affected then return rollback(affected, err); end
3851
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
221
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
222 if data and next(data) ~= nil then
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
223 local extradata = {};
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
224 for key, value in pairs(data) do
4042
3294f12ea602 mod_storage_sql: Quote identifiers in SQL with backquotes, and use the empty string for NULL, and '=' instead of 'IS' for comparison, to work with MySQL's limitations...
Waqas Hussain <waqas20@gmail.com>
parents: 3891
diff changeset
225 if type(key) == "string" and key ~= "" then
3851
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
226 local t, value = serialize(value);
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
227 if not t then return rollback(t, value); end
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
228 local ok, err = setsql("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", key, t, value);
3851
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
229 if not ok then return rollback(ok, err); end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
230 else
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
231 extradata[key] = value;
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
232 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
233 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
234 if next(extradata) ~= nil then
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
235 local t, extradata = serialize(extradata);
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
236 if not t then return rollback(t, extradata); end
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
237 local ok, err = setsql("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", "", t, extradata);
3851
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
238 if not ok then return rollback(ok, err); end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
239 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
240 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
241 return commit(true);
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
242 end
e979b5fe859d mod_storage_sql: Initial commit of new SQL data driver.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
243
4073
79fd38ab224b mod_storage_sql: Catch Lua errors during SQL transactions, and rollback.
Waqas Hussain <waqas20@gmail.com>
parents: 4070
diff changeset
244 local keyval_store = {};
79fd38ab224b mod_storage_sql: Catch Lua errors during SQL transactions, and rollback.
Waqas Hussain <waqas20@gmail.com>
parents: 4070
diff changeset
245 keyval_store.__index = keyval_store;
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246 function keyval_store:get(username)
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247 user,store = username,self.store;
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248 if not connection and not connect() then return nil, "Unable to connect to database"; end
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249 local success, ret, err = xpcall(keyval_store_get, debug.traceback);
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250 if not connection and connect() then
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251 success, ret, err = xpcall(keyval_store_get, debug.traceback);
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252 end
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253 if success then return ret, err; else return rollback(nil, ret); end
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254 end
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255 function keyval_store:set(username, data)
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256 user,store = username,self.store;
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257 if not connection and not connect() then return nil, "Unable to connect to database"; end
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258 local success, ret, err = xpcall(function() return keyval_store_set(data); end, debug.traceback);
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259 if not connection and connect() then
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260 success, ret, err = xpcall(function() return keyval_store_set(data); end, debug.traceback);
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261 end
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262 if success then return ret, err; else return rollback(nil, ret); end
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263 end
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264
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265 local function map_store_get(key)
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266 local stmt, err = getsql("SELECT * FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", key or "");
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267 if not stmt then return rollback(nil, err); end
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268
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269 local haveany;
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270 local result = {};
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271 for row in stmt:rows(true) do
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272 haveany = true;
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273 local k = row.key;
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274 local v = deserialize(row.type, row.value);
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275 if k and v then
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276 if k ~= "" then result[k] = v; elseif type(v) == "table" then
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277 for a,b in pairs(v) do
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278 result[a] = b;
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279 end
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280 end
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281 end
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282 end
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283 return commit(haveany and result[key] or nil);
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284 end
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285 local function map_store_set(key, data)
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286 local affected, err = setsql("DELETE FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", key or "");
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287 if not affected then return rollback(affected, err); end
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288
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289 if data and next(data) ~= nil then
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290 if type(key) == "string" and key ~= "" then
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291 local t, value = serialize(data);
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292 if not t then return rollback(t, value); end
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293 local ok, err = setsql("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", key, t, value);
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294 if not ok then return rollback(ok, err); end
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295 else
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296 -- TODO non-string keys
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297 end
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298 end
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299 return commit(true);
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300 end
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301
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302 local map_store = {};
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303 map_store.__index = map_store;
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304 function map_store:get(username, key)
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305 user,store = username,self.store;
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306 local success, ret, err = xpcall(function() return map_store_get(key); end, debug.traceback);
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307 if success then return ret, err; else return rollback(nil, ret); end
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308 end
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309 function map_store:set(username, key, data)
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310 user,store = username,self.store;
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311 local success, ret, err = xpcall(function() return map_store_set(key, data); end, debug.traceback);
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312 if success then return ret, err; else return rollback(nil, ret); end
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313 end
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314
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315 local list_store = {};
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316 list_store.__index = list_store;
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317 function list_store:scan(username, from, to, jid, typ)
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318 user,store = username,self.store;
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319
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320 local cols = {"from", "to", "jid", "typ"};
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321 local vals = { from , to , jid , typ };
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322 local stmt, err;
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323 local query = "SELECT * FROM `prosodyarchive` WHERE `host`=? AND `user`=? AND `store`=?";
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324
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325 query = query.." ORDER BY time";
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326 --local stmt, err = getsql("SELECT * FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=? AND `key`=?", key or "");
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327
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328 return nil, "not-implemented"
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329 end
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330
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331 local driver = { name = "sql" };
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332
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333 function driver:open(store, typ)
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334 if not typ then -- default key-value store
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335 return setmetatable({ store = store }, keyval_store);
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336 end
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337 return nil, "unsupported-store";
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338 end
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339
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340 module:add_item("data-driver", driver);