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mod_storage_sql: Switch to MEDIUMTEXT for the 'value' column when using MySQL, as it imposes a 64K limit otherwise, potentially truncating data. Automatically upgrades existing tables.

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This commit is contained in:
Matthew Wild 2011-06-02 02:30:26 +01:00
parent e1ba26dafe
commit 7037ff8b95
1 changed files with 18 additions and 0 deletions
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18
plugins/mod_storage_sql.lua
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@ -68,6 +68,8 @@ local function create_table()
local create_sql = "CREATE TABLE `prosody` (`host` TEXT, `user` TEXT, `store` TEXT, `key` TEXT, `type` TEXT, `value` TEXT);";
if params.driver == "PostgreSQL" then
create_sql = create_sql:gsub("`", "\"");
elseif params.driver == "MySQL" then
create_sql = create_sql:gsub("`value` TEXT", "`value` MEDIUMTEXT");
end
local stmt = connection:prepare(create_sql);
@ -91,6 +93,22 @@ local function create_table()
if not(ok and commit_ok) then
module:log("warn", "Failed to create index (%s), lookups may not be optimised", err or commit_err);
end
else -- COMPAT: Upgrade tables from 0.8.0
-- Failed to create, but check existing MySQL table here
local stmt = connection:prepare("SHOW COLUMNS FROM prosody WHERE Field='value' and Type='text'");
local ok = stmt:execute();
local commit_ok = connection:commit();
if ok and commit_ok then
if stmt:rowcount() > 0 then
local stmt = connection:prepare("ALTER TABLE prosody MODIFY COLUMN `value` MEDIUMTEXT");
local ok = stmt:execute();
local commit_ok = connection:commit();
if ok and commit_ok then
module:log("info", "Database table automatically upgraded");
end
end
repeat until not stmt:fetch();
end
end
end
end