# HG changeset patch
# User Matthew Wild <mwild1@gmail.com>
# Date 1306978226 -3600
# Node ID c806a599224ace5e4ada6bafebb678054d95b705
# Parent  20979f124ad90d5b84ac56d7851d8845d7bf289c
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.

diff -r 20979f124ad9 -r c806a599224a plugins/mod_storage_sql.lua
--- a/plugins/mod_storage_sql.lua	Thu Jun 02 05:36:15 2011 +0500
+++ b/plugins/mod_storage_sql.lua	Thu Jun 02 02:30:26 2011 +0100
@@ -68,6 +68,8 @@
 	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 @@
 			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