Looking for help with HikariConfigMXBean to dynamically change setMaximumPoolSize at runtime.

[ME Jones]

Hi All,

I am trying to dynamically adjust the Max Pool Size at runtime, however continue to get the following (attached pic) error.

Here is the code snippet. 

I can obtain a reference to the PoolMXBean and see idleConnections, but when i get a reference to the ConfigMXBean and try to adjust Max Pool Size i get the error listed above.

"The configuration of the pool is sealed once started.  Use HikariConfigMXBean for runtime changes."

Any help is appreciated.

Thanks,

                                            try {

                                                MBeanServer mBeanServer = ManagementFactory.getPlatformMBeanServer();

                                                ObjectName poolName = new ObjectName(MessageFormat.format("com.zaxxer.hikari:type=Pool ({0})", jtdsHikariDataSource.getPoolName()));

                                                HikariPoolMXBean poolProxy = JMX.newMXBeanProxy(mBeanServer, poolName, HikariPoolMXBean.class);

                                                HikariConfigMXBean hikariConfigMXBean = JMX.newMXBeanProxy(mBeanServer, poolName, HikariConfigMXBean.class);

                                                hikariConfigMXBean.setMaximumPoolSize(currentPoolSize);

                                                int idleConnections = poolProxy.getIdleConnections();

//                                                HikariConfigMXBean hikariConfigMXBean = jtdsHikariDataSource.getHikariConfigMXBean();

//                                                hikariConfigMXBean.setMaximumPoolSize(currentPoolSize);

//                                                jtdsHikariDataSource.setMaximumPoolSize(currentPoolSize);

                                                compareMaximumPoolSize = currentPoolSize;

                                                System.out.println(MessageFormat.format("jtdsHikariDataSource.getMaximumPoolSize = {0}", String.valueOf(jtdsHikariDataSource.getMaximumPoolSize())));

                                                poolProxy = null;

                                                hikariConfigMXBean = null;

                                            } catch (MalformedObjectNameException malformedObjectNameException) {

                                                Helper.logStackTrace(malformedObjectNameException);

                                            }

[Brett Wooldridge]

This was a bug.  I have just fixed it, and will be releasing a new binary shortly.

-Brett

[ME Jones]

Thanks Brett,