author | Matthew Wild <mwild1@gmail.com> |
Mon, 29 Apr 2013 00:33:39 +0100 | |
changeset 5533 | df3c78221f26 |
parent 5494 | 9916f0a2d178 |
child 5711 | 254a9420e53d |
permissions | -rw-r--r-- |
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9916f0a2d178
mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
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local json = require "util.json"; |
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local resolve_relative_path = require "core.configmanager".resolve_relative_path; |
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local mod_sql = module:require("sql"); |
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local params = module:get_option("sql"); |
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local engine; -- TODO create engine |
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local function create_table() |
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--[[local Table,Column,Index = mod_sql.Table,mod_sql.Column,mod_sql.Index; |
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local ProsodyTable = Table { |
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name="prosody"; |
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Column { name="host", type="TEXT", nullable=false }; |
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Column { name="user", type="TEXT", nullable=false }; |
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Column { name="store", type="TEXT", nullable=false }; |
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Column { name="key", type="TEXT", nullable=false }; |
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Column { name="type", type="TEXT", nullable=false }; |
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Column { name="value", type="TEXT", nullable=false }; |
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Index { name="prosody_index", "host", "user", "store", "key" }; |
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}; |
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engine:transaction(function() |
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ProsodyTable:create(engine); |
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end);]] |
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if not module:get_option("sql_manage_tables", true) then |
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return; |
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end |
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local create_sql = "CREATE TABLE `prosody` (`host` TEXT, `user` TEXT, `store` TEXT, `key` TEXT, `type` TEXT, `value` TEXT);"; |
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if params.driver == "PostgreSQL" then |
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create_sql = create_sql:gsub("`", "\""); |
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elseif params.driver == "MySQL" then |
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create_sql = create_sql:gsub("`value` TEXT", "`value` MEDIUMTEXT") |
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:gsub(";$", " CHARACTER SET 'utf8' COLLATE 'utf8_bin';"); |
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end |
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local index_sql = "CREATE INDEX `prosody_index` ON `prosody` (`host`, `user`, `store`, `key`)"; |
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if params.driver == "PostgreSQL" then |
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index_sql = index_sql:gsub("`", "\""); |
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elseif params.driver == "MySQL" then |
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index_sql = index_sql:gsub("`([,)])", "`(20)%1"); |
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end |
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local success,err = engine:transaction(function() |
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engine:execute(create_sql); |
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engine:execute(index_sql); |
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end); |
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if not success then -- so we failed to create |
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if params.driver == "MySQL" then |
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success,err = engine:transaction(function() |
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local result = engine:execute("SHOW COLUMNS FROM prosody WHERE Field='value' and Type='text'"); |
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if result:rowcount() > 0 then |
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module:log("info", "Upgrading database schema..."); |
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engine:execute("ALTER TABLE prosody MODIFY COLUMN `value` MEDIUMTEXT"); |
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module:log("info", "Database table automatically upgraded"); |
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end |
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return true; |
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end); |
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if not success then |
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module:log("error", "Failed to check/upgrade database schema (%s), please see " |
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.."http://prosody.im/doc/mysql for help", |
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err or "unknown error"); |
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end |
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end |
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end |
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end |
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local function set_encoding() |
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if params.driver ~= "SQLite3" then |
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local set_names_query = "SET NAMES 'utf8';"; |
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if params.driver == "MySQL" then |
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set_names_query = set_names_query:gsub(";$", " COLLATE 'utf8_bin';"); |
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end |
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local success,err = engine:transaction(function() return engine:execute(set_names_query); end); |
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if not success then |
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module:log("error", "Failed to set database connection encoding to UTF8: %s", err); |
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return; |
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end |
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if params.driver == "MySQL" then |
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-- COMPAT w/pre-0.9: Upgrade tables to UTF-8 if not already |
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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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local success,err = engine:transaction(function() |
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local result = engine:execute(check_encoding_query); |
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local n_bad_columns = result:rowcount(); |
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if n_bad_columns > 0 then |
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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 success: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; |
9916f0a2d178
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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; |
9916f0a2d178
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|
136 |
elseif t == "boolean" then |
9916f0a2d178
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|
137 |
if value == "true" then return true; |
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parents:
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|
138 |
elseif value == "false" then return false; end |
9916f0a2d178
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|
139 |
elseif t == "number" then return tonumber(value); |
9916f0a2d178
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parents:
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|
140 |
elseif t == "json" then |
9916f0a2d178
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Matthew Wild <mwild1@gmail.com>
parents:
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|
141 |
return json.decode(value); |
9916f0a2d178
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parents:
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|
142 |
end |
9916f0a2d178
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parents:
diff
changeset
|
143 |
end |
9916f0a2d178
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Matthew Wild <mwild1@gmail.com>
parents:
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changeset
|
144 |
|
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parents:
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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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parents:
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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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mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
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changeset
|
151 |
for row in engine:select("SELECT `key`,`type`,`value` FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=?", host, user, store) do |
9916f0a2d178
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parents:
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|
152 |
haveany = true; |
9916f0a2d178
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parents:
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|
153 |
local k = row[1]; |
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parents:
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|
154 |
local v = deserialize(row[2], row[3]); |
9916f0a2d178
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Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
155 |
if k and v then |
9916f0a2d178
mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
156 |
if k ~= "" then result[k] = v; elseif type(v) == "table" then |
9916f0a2d178
mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
157 |
for a,b in pairs(v) do |
9916f0a2d178
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Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
158 |
result[a] = b; |
9916f0a2d178
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Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
159 |
end |
9916f0a2d178
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Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
160 |
end |
9916f0a2d178
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Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
161 |
end |
9916f0a2d178
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Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
162 |
end |
9916f0a2d178
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Matthew Wild <mwild1@gmail.com>
parents:
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changeset
|
163 |
if haveany then |
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|
164 |
return result; |
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parents:
diff
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|
165 |
end |
9916f0a2d178
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Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
166 |
end |
9916f0a2d178
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Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
167 |
local function keyval_store_set(data) |
9916f0a2d178
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|
168 |
engine:delete("DELETE FROM `prosody` WHERE `host`=? AND `user`=? AND `store`=?", host, user, store); |
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|
169 |
|
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Matthew Wild <mwild1@gmail.com>
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|
170 |
if data and next(data) ~= nil then |
9916f0a2d178
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|
171 |
local extradata = {}; |
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|
172 |
for key, value in pairs(data) do |
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Matthew Wild <mwild1@gmail.com>
parents:
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|
173 |
if type(key) == "string" and key ~= "" then |
9916f0a2d178
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Matthew Wild <mwild1@gmail.com>
parents:
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|
174 |
local t, value = serialize(value); |
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assert(t, value); |
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engine:insert("INSERT INTO `prosody` (`host`,`user`,`store`,`key`,`type`,`value`) VALUES (?,?,?,?,?,?)", host, user, store, key, t, value); |
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else |
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extradata[key] = value; |
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end |
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end |
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if next(extradata) ~= nil then |
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local t, extradata = serialize(extradata); |
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assert(t, extradata); |
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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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return true; |
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188 |
end |
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189 |
|
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local keyval_store = {}; |
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keyval_store.__index = keyval_store; |
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function keyval_store:get(username) |
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user,store = username,self.store; |
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return select(2, engine:transaction(keyval_store_get)); |
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195 |
end |
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function keyval_store:set(username, data) |
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user,store = username,self.store; |
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return engine:transaction(function() |
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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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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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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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if username == true or not username then |
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username = ""; |
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222 |
end |
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return engine:transaction(function() |
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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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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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module:provides("storage", driver); |
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236 |
|
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237 |