- added support for setting NULL column values to MySQL wrapper in core
- replaced nonstandard strdup function and manual memory management with std::string
- fixed bug in MySQLPreparedStatement::getQueryString method, it failed when string parameter contained embedded '?' symbols
- fixed memory leak in MySQLPreparedStatement::setString method
- Logging System is asyncronous to improve performance.
- Each msg and Logger has a Log Type and Log Level assigned. Each msg is assigned the Logger of same Log Type or "root" Logger is selected if there is no Logger configured for the given Log Type
- Loggers have a list of Appenders to send the msg to. The Msg in the Logger is not sent to Appenders if the msg LogLevel is lower than Logger LogLevel.
- There are three (at the moment) types of Appenders: Console, File or DB (this is WIP, not working ATM). Msg is not written to the resource if msg LogLevel is lower than Appender LogLevel.
- Appender and Console Log levels can be changed while server is active with command '.set loglevel (a/l) name level'
Explanation of use with Sample config:
Appender.Console.Type=1 (1 = Console)
Appender.Console.Level=2 (2 = Debug)
Appender.Server.Type=2 (2 = File)
Appender.Server.Level=3 (3 = Info)
Appender.Server.File=Server.log
Appender.SQL.Type=2 (2 = File)
Appender.SQL.Level=1 (1 = Trace)
Appender.SQL.File=sql.log
Appenders=Console Server (NOTE: SQL has not been included here... that will make core ignore the config for "SQL" as it's not in this list)
Logger.root.Type=0 (0 = Default - if it's not created by config, server will create it with LogLevel = DISABLED)
Logger.root.Level=5 (5 = Error)
Logger.root.Appenders=Console
Logger.SQL.Type=26 (26 = SQL)
Logger.SQL.Level=3 (2 = Debug)
Logger.SQL.Appenders=Console Server SQL
Logger.SomeRandomName.Type=24 (24 = Guild)
Logger.SomeRandomName.Level=5 (5 = Error)
Loggers=root SQL SomeRandomName
* At loading Appender SQL will be ignored, as it's not present on "Appenders"
* sLog->outDebug(LOG_FILTER_GUILD, "Some log msg related to Guilds")
- Msg is sent to Logger of Type LOG_FILTER_GUILD (24). Logger with name SomeRandomName is found but it's LogLevel = 5 and Msg LogLevel=2... Msg is not logged
* sLog->outError(LOG_FILTER_GUILD, "Some error log msg related to Guilds")
- Msg is sent to Logger of Type LOG_FILTER_GUILD (24). Logger with name SomeRandomeName is found with proper LogLevel but Logger does not have any Appenders assigned to that logger... Msg is not logged
* sLog->outDebug(LOG_FILTER_SQL, "Some msg related to SQLs")
- Msg is sent to Logger SQL (matches type), as it matches LogLevel the msg is sent to Appenders Console, Server and SQL
- Appender Console has lower Log Level: Msg is logged to Console
- Appender Server has higher Log Level: Msg is not logged to file
- Appender SQL has lower Log Level: Msg is logged to file sql.log
* sLog->outDebug(LOG_FILTER_BATTLEGROUND, "Some msg related to Battelgrounds")
- Msg is sent to Logger root (Type 0) as no Logger was found with Type LOG_FILTER_BATTLEGROUND (13). As Logger has higher LogLevel msg is not sent to any appender
* sLog->outError(LOG_FILTER_BATTLEGROUND, "Some error msg related to Battelgrounds")
- Msg is sent to Logger root (Type 0) as no Logger was found with Type LOG_FILTER_BATTLEGROUND (13). Msg has lower LogLevel and is sent to Appender Console
- Appender Console has lower LogLevel: Msg is logged to Console
- Remove redundant locking in PingOperation. Since these are delayed to async threads with their own MySQL connection, no concurrent access here either.
- Codestyle cleanup
- Documentation refining
- Implement DatabaseWorkerPool::DirectCommitTransaction for synchronous transaction execution (as opposed to asynchronous/enqueued).
- Add MySQL errno 1213 "Deadlock found when trying to get lock; try restarting transaction" handler. If 1213 is called the core will retry to directly execute the transaction a maximum of 5 times.
- Add generic HandleMySQLErrno() method.
- Add the ability to re-execute a certain statement if errorhandler resolved the situation succesfuly.
- Add support for MySQL errno´s 2006, 2013, 2048, 2055 - fixes automatic reconnection behaviour.
- Cleanup in affected code
NOTE: You should still be smart enough to configure your worldserver and authserver´s MaxPingTime to be lower than your MySQL´s wait_time.
--HG--
branch : trunk
- Make the mysql connectionpool shared for async and syncrhonous connections.
- Allow configurable amount of connections for the pool
- Allow configurable amount of delaythreads
Note that delaythreads now only represent in-core threads. Whenever they execute a task they will pick a free connection from the pool instead of using their previously unique assigned connection.
The purpose of this design change is better distribution of SQL requests (no bottlenecks paired with idling) among available resources.
This also prevents a ¨memory waste¨ of preparing async prepared statements on synchronous connections (that were never called) - and vice versa. Now, connections aren´t explicitly async or synchronous, they serve both purposes.
Use at own risk, might cause instabilities.
Don´t forget to update your config files and clear your cmake cache.
--HG--
branch : trunk
- DB Threading model update
* Get rid of ThreadBundleMask and bundled connection
* Implement configurable amount of Synch threads for databasepools
* Use modulus based algorithm to check for free synchronous connections instead of previous ¨get connection by thread key or bundlemask¨ feature
* Locks on mysql context objects are now managed outside the mysql query methods
Fixes issue #4058
Fixes issue #4059
Introduces a ton of more issues. Use at own risk. You were warned. Really.
Don´t forget to update your worldserver.conf
--HG--
branch : trunk
- Rewrite Field class to be able to store both binary prepared statement data and data from adhoc query resultsets
- Buffer the data of prepared statements using ResultSet and Field classes and let go of mysql c api structures after PreparedResultSet constructor. Fixes a race condition and thus a possible crash/data corruption (issue pointed out to Derex, basic suggestion by raczman)
- Conform PreparedResultSet and ResultSet to the same design standards, and using Field class as data buffer class for both
* NOTE: This means the fetching methods are uniform again, using ¨Field* fields = result->Fetch();¨ and access to elements trough fields[x].
* NOTE: for access to the correct row in prepared statements, ¨Field* fields = result->Fetch();¨ must ALWAYS be called inside the do { }while(result->NextRow()) loop.
* NOTE: This means that Field::GetString() returns std::string object and Field::GetCString() returns const char* pointer.
Still experimental and all that jazz, not recommended for production servers until feedback is given.
--HG--
branch : trunk
