/// <summary>
/// Creates instances of MBeanClient objects for all open JMX ports on a host within a given port range.
/// This is accomplished by scanning the range starting from the bottom and stopping when a closed port is encountered, to maintain parity with how Tableau exposes JMX ports.
/// </summary>
/// <param name="hostname">The hostname of the remote host to generate clients for.</param>
/// <param name="startPort">The start of the port range to scan.</param>
/// <param name="endPort">The end of the port range to scan.</param>
/// <returns>Collection of MBeanClients for open ports within the given range.</returns>
public static ICollection<IMBeanClient> CreateClients(string hostname, int startPort, int endPort)
{
// Validate port range.
if (!IsValidPortRange(startPort, endPort))
{
throw new ArgumentException("Invalid port range");
}
Log.Debug(String.Format("Scanning JMX ports {0}-{1} on {2}..", startPort, endPort, hostname));
ICollection<IMBeanClient> validClients = new List<IMBeanClient>();
for (var currentPort = startPort; currentPort <= endPort; currentPort++)
{
var connectionInfo = new JmxConnectionInfo(hostname, currentPort);
var connector = new JmxConnectorProxy(connectionInfo);
try
{
connector.OpenConnection();
IMBeanClient client = new MBeanClient(connector);
validClients.Add(client);
Log.Debug(String.Format("Created JMX client for {0}", connectionInfo));
}
catch (Exception)
{
Log.Debug(String.Format("Encountered closed JMX port ({0}), stopping scan.", currentPort));
break;
}
}
return validClients;
}
/// <summary>
/// Creates instances of MBeanClient objects for all open JMX ports on a host within a given port range.
/// This is accomplished by scanning the range starting from the bottom and stopping when a closed port is encountered, to maintain parity with how Tableau exposes JMX ports.
/// </summary>
/// <param name="hostname">The hostname of the remote host to generate clients for.</param>
/// <param name="startPort">The start of the port range to scan.</param>
/// <param name="endPort">The end of the port range to scan.</param>
/// <returns>Collection of MBeanClients for open ports within the given range.</returns>
public static ICollection <IMBeanClient> CreateClients(string hostname, int startPort, int endPort)
{
// Validate port range.
if (!IsValidPortRange(startPort, endPort))
{
throw new ArgumentException("Invalid port range");
}
Log.Debug(String.Format("Scanning JMX ports {0}-{1} on {2}..", startPort, endPort, hostname));
ICollection <IMBeanClient> validClients = new List <IMBeanClient>();
for (var currentPort = startPort; currentPort <= endPort; currentPort++)
{
var connectionInfo = new JmxConnectionInfo(hostname, currentPort);
var connector = new JmxConnectorProxy(connectionInfo);
try
{
connector.OpenConnection();
IMBeanClient client = new MBeanClient(connector);
validClients.Add(client);
Log.Debug(String.Format("Created JMX client for {0}", connectionInfo));
}
catch (Exception)
{
Log.Debug(String.Format("Encountered closed JMX port ({0}), stopping scan.", currentPort));
break;
}
}
return(validClients);
}
private static IMBeanClient CreateMBeanClient(string hostname, int port, int instanceNumber)
{
var connectionInfo = new JmxConnectionInfo(hostname, port);
var connector = new JmxConnectorProxy(connectionInfo);
connector.OpenConnection();
return(new MBeanClient(connector, instanceNumber));
}
public JmxConnectorProxy(JmxConnectionInfo connectionInfo)
{
ConnectionInfo = connectionInfo;
Connector = JMXConnectorFactory.newJMXConnector(ConnectionInfo.GetJmxServiceUrl(), null);
LastConnectionAttempt = DateTime.MinValue;
}
public JmxConnectorProxy(JmxConnectionInfo connectionInfo)
{
ConnectionInfo = connectionInfo;
Connector = JMXConnectorFactory.newJMXConnector(ConnectionInfo.GetJmxServiceUrl(), null);
LastConnectionAttempt = DateTime.MinValue;
}