HikariCP JMX Access

HikariJmxElf

package com.zaxxer.hikari;

import java.lang.management.ManagementFactory;

import javax.management.MBeanServer;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;

public class HikariJmxElf
{
   private final ObjectName poolAccessor;
   private final MBeanServer mBeanServer;

   public HikariJmxElf(final String poolName)
   {
      try {
         mBeanServer = ManagementFactory.getPlatformMBeanServer();
         poolAccessor = new ObjectName("com.zaxxer.hikari:type=Pool (" + poolName + ")");
      }
      catch (MalformedObjectNameException e) {
         throw new RuntimeException("Pool " + poolName + " could not be found", e);
      }
   }

   public int getIdleConnections()
   {
      try {
         return (Integer) mBeanServer.getAttribute(poolAccessor, "IdleConnections");
      }
      catch (Exception e) {
         throw new RuntimeException(e);
      }
   }

   public int getActiveConnections()
   {
      try {
         return (Integer) mBeanServer.getAttribute(poolAccessor, "ActiveConnections");
      }
      catch (Exception e) {
         throw new RuntimeException(e);
      }
   }

   public int getTotalConnections()
   {
      try {
         return (Integer) mBeanServer.getAttribute(poolAccessor, "TotalConnections");
      }
      catch (Exception e) {
         throw new RuntimeException(e);
      }
   }
}