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irc2sql: improved handling of netsplits

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This commit is contained in:
DukePyrolator
2013-12-14 09:56:51 +01:00
parent f9a4a0fbef
commit adbc5a0e65
4 changed files with 102 additions and 22 deletions
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modules/stats/irc2sql/tables.cpp
+85 -15
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@@ -7,12 +7,12 @@ void IRC2SQL::CheckTables()
if (firstrun)
{
/*
* drop/recreate some tables in case anope crashed
* and was unable to clear the content (ison)
* reset some tables to make sure they are really empty
*/
this->sql->RunQuery(SQL::Query("DROP TABLE " + prefix + "user"));
this->sql->RunQuery(SQL::Query("DROP TABLE " + prefix + "chan"));
this->sql->RunQuery(SQL::Query("DROP TABLE " + prefix + "ison"));
this->sql->RunQuery("TRUNCATE TABLE " + prefix + "user");
this->sql->RunQuery("TRUNCATE TABLE " + prefix + "chan");
this->sql->RunQuery("TRUNCATE TABLE " + prefix + "ison");
this->sql->RunQuery("UPDATE `" + prefix + "server` SET currentusers=0, online='N'");
}
this->GetTables();
@@ -227,8 +227,80 @@ void IRC2SQL::CheckTables()
"END";
this->RunQuery(query);
if (this->HasProcedure(prefix + "ServerQuit"))
this->RunQuery(SQL::Query("DROP PROCEDURE " + prefix + "ServerQuit"));
query = "CREATE PROCEDURE " + prefix + "ServerQuit(sname_ varchar(255)) "
"BEGIN "
/* 1.
* loop through all channels and decrease the user count
* by the number of users that are on this channel AND
* on the splitting server
*
* we dont have to care about channels that get empty, there will be
* an extra OnChannelDelete event triggered from anope.
*/
"DECLARE no_more_rows BOOLEAN DEFAULT FALSE;"
"DECLARE channel_ varchar(255);"
"DECLARE ucount_ int;"
"DECLARE channel_cursor CURSOR FOR "
"SELECT c.channel "
"FROM `" + prefix + "chan` as c, `" + prefix + "ison` as i, "
"`" + prefix + "user` as u, `" + prefix + "server` as s "
"WHERE c.chanid = i.chanid "
"AND i.nickid = u.nickid "
"AND u.servid = s.id "
"AND s.name = sname_;"
"DECLARE CONTINUE HANDLER FOR NOT FOUND "
"SET no_more_rows = TRUE;"
"OPEN channel_cursor;"
"the_loop: LOOP "
"FETCH channel_cursor INTO channel_;"
"IF no_more_rows THEN "
"CLOSE channel_cursor;"
"LEAVE the_loop;"
"END IF;"
"SELECT COUNT(*) INTO ucount_ "
"FROM `" + prefix + "ison` AS i, `" + prefix + "chan` AS c,"
"`" + prefix + "user` AS u, `" + prefix + "server` AS s "
"WHERE i.nickid = u.nickid "
"AND u.servid = s.id "
"AND i.chanid = c.chanid "
"AND c.channel = channel_ "
"AND s.name = sname_; "
"UPDATE `" + prefix + "chan` "
"SET currentusers = currentusers - ucount_ "
"WHERE channel = channel_;"
"END LOOP;"
/* 2.
* remove all users on the splitting server from the ison table
*/
"DELETE i FROM `" + prefix + "ison` AS i "
"INNER JOIN `" + prefix + "server` AS s "
"INNER JOIN `" + prefix + "user` AS u "
"WHERE i.nickid = u.nickid "
"AND u.servid = s.id "
"AND s.name = sname_;"
/* 3.
* remove all users on the splitting server from the user table
*/
"DELETE u FROM `" + prefix + "user` AS u "
"INNER JOIN `" + prefix + "server` AS s "
"WHERE s.id = u.servid "
"AND s.name = sname_;"
/* 4.
* on the splitting server, set usercount = 0, split_time = now(), online = 'N'
*/
"UPDATE `" + prefix + "server` SET currentusers = 0, split_time = now(), online = 'N' "
"WHERE name = sname_;"
"END;"; // end of the procedure
this->RunQuery(query);
if (this->HasProcedure(prefix + "UserQuit"))
this->RunQuery(SQL::Query("DROP PROCEDURE " +prefix + "UserQuit"));
this->RunQuery(SQL::Query("DROP PROCEDURE " + prefix + "UserQuit"));
query = "CREATE PROCEDURE `" + prefix + "UserQuit`"
"(nick_ varchar(255)) "
"BEGIN "
@@ -245,10 +317,8 @@ void IRC2SQL::CheckTables()
/* remove from all channels where the user was on */
"DELETE i FROM `" + prefix + "ison` AS i "
"INNER JOIN `" + prefix + "user` as u "
"INNER JOIN `" + prefix + "chan` as c "
"WHERE u.nick = nick_ "
"AND i.nickid = u.nickid "
"AND i.chanid = c.chanid;"
/* remove the user from the user table */
"DELETE FROM `" + prefix + "user` WHERE nick = nick_; "
"END";
@@ -298,13 +368,13 @@ void IRC2SQL::CheckTables()
query = "CREATE PROCEDURE `" + prefix + "PartUser`"
"(nick_ varchar(255), channel_ varchar(255)) "
"BEGIN "
"DELETE FROM `" + prefix + "ison` "
"USING `" + prefix + "ison`, `" + prefix + "user` , `"
+ prefix + "chan` "
"WHERE " + prefix + "ison.nickid = " + prefix + "user.nickid "
"AND " + prefix + "user.nick = nick_ "
"AND " + prefix + "ison.chanid = " + prefix + "chan.chanid "
"AND " + prefix + "chan.channel = channel_; "
"DELETE i FROM `" + prefix + "ison` AS i "
"INNER JOIN `" + prefix + "user` AS u "
"INNER JOIN `" + prefix + "chan` AS c "
"WHERE i.nickid = u.nickid "
"AND u.nick = nick_ "
"AND i.chanid = c.chanid "
"AND c.channel = channel_;"
"UPDATE `" + prefix + "chan` SET currentusers=currentusers-1 "
"WHERE channel=channel_;"
"END";