de.zib.scalaris.jmx
Interface MonitorServiceMBean

All Known Implementing Classes:

MonitorService

public interface MonitorServiceMBean

Provides methods to monitor a whole Scalaris ring via JMX.

Since:

3.15

Version:

3.15

Author:

Nico Kruber, kruber@zib.de

Method Summary

Double	getCurLatencyAvg() Gets the current, i.e.
Double	getCurLatencyStddev() Gets the current, i.e.
Map<Long,Double>	getLatencyAvg() Gets average latency values of the whole Scalaris ring from the VM the monitor is connected to.
Map<Long,Double>	getLatencyStddev() Gets the standard deviation of the latency values of the whole Scalaris ring from the VM the monitor is connected to.
Long	getNodes() Gets the number of Scalaris nodes of the whole Scalaris ring from the VM the monitor is connected to.
Long	getTotalLoad() Gets the total load of the whole Scalaris ring from the VM the monitor is connected to.

Method Detail

getTotalLoad

Long getTotalLoad()
                  throws ConnectionException,
                         UnknownException

Gets the total load of the whole Scalaris ring from the VM the monitor is connected to.

Returns:

number of DHT nodes

Throws:

ConnectionException - if the connection is not active or a communication error occurs or an exit signal was received or the remote node sends a message containing an invalid cookie

UnknownException - if any other error occurs

getNodes

Long getNodes()
              throws ConnectionException,
                     UnknownException

Gets the number of Scalaris nodes of the whole Scalaris ring from the VM the monitor is connected to.

Returns:

number of DHT nodes

Throws:

ConnectionException - if the connection is not active or a communication error occurs or an exit signal was received or the remote node sends a message containing an invalid cookie

UnknownException - if any other error occurs

getLatencyAvg

Map<Long,Double> getLatencyAvg()
                               throws ConnectionException,
                                      UnknownException

Gets average latency values of the whole Scalaris ring from the VM the monitor is connected to.

Returns:

map of timestamps to average latencies

Throws:

ConnectionException - if the connection is not active or a communication error occurs or an exit signal was received or the remote node sends a message containing an invalid cookie

UnknownException - if any other error occurs

getLatencyStddev

Map<Long,Double> getLatencyStddev()
                                  throws ConnectionException,
                                         UnknownException

Gets the standard deviation of the latency values of the whole Scalaris ring from the VM the monitor is connected to.

Returns:

map of timestamps to latency (standard) deviation

Throws:

ConnectionException - if the connection is not active or a communication error occurs or an exit signal was received or the remote node sends a message containing an invalid cookie

UnknownException - if any other error occurs

getCurLatencyAvg

Double getCurLatencyAvg()
                        throws ConnectionException,
                               UnknownException

Gets the current, i.e. latest, average latency of the whole Scalaris ring from the VM the monitor is connected to.

Returns:

latest average latency (or null if there is none)

Throws:

ConnectionException - if the connection is not active or a communication error occurs or an exit signal was received or the remote node sends a message containing an invalid cookie

UnknownException - if any other error occurs

getCurLatencyStddev

Double getCurLatencyStddev()
                           throws ConnectionException,
                                  UnknownException

Gets the current, i.e. latest, standard deviation of the latency of the whole Scalaris ring from the VM the monitor is connected to.

Returns:

latest latency (standard) deviation (or null if there is none)

Throws:

ConnectionException - if the connection is not active or a communication error occurs or an exit signal was received or the remote node sends a message containing an invalid cookie

UnknownException - if any other error occurs