entropy.monitoring
Class ConfigurationAdapter

java.lang.Object
  entropy.monitoring.ConfigurationAdapter

Direct Known Subclasses:

GangliaConfigurationAdapter

public abstract class ConfigurationAdapter
extends Object

Extract a configuration from a monitoring system.

Author:

Fabien Hermenier

Field Summary

static int

DEFAULT_CPU_STEP Default step to round CPU capacity and consumption.

Constructor Summary

ConfigurationAdapter()
Make a new Configuration adapter.

Method Summary

abstract Configuration	extractConfiguration() Get the current configuration.
static int	getCPUCapacity(int mhz, int nbCPU) Get a CPU value using current metrics and default step.
static int	getCPUConsumption(float cpuPct, Node host) Get the CPU consumption of a virtual machine.
List<String>	getNodesBlackList() Get the nodes black list.
List<String>	getNodesWhiteList() Get the nodes white list.
static int	round(int nb, int step) Return the closest number, with a certain step.
void	setNodesBlackList(List<String> nodes) Set the nodes black list.
void	setNodesWhiteList(List<String> nodes) Set the nodes white list.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DEFAULT_CPU_STEP

public static final int DEFAULT_CPU_STEP

Default step to round CPU capacity and consumption.

See Also:

Constant Field Values

Constructor Detail

ConfigurationAdapter

public ConfigurationAdapter()

Make a new Configuration adapter.

Method Detail

extractConfiguration

public abstract Configuration extractConfiguration()
                                            throws MonitoringException

Get the current configuration.

Returns:

a consistent configuration

Throws:

MonitoringException - if an error occurs

round

public static int round(int nb,
                        int step)

Return the closest number, with a certain step.

Parameters:

nb - the number

step - the step

Returns:

a number

getCPUCapacity

public static int getCPUCapacity(int mhz,
                                 int nbCPU)

Get a CPU value using current metrics and default step.

Parameters:

mhz - The CPU frequency

nbCPU - the number of CPU allocated

Returns:

round(mhz * nbCPU, DEFAULT_CPU_STEP);

getCPUConsumption

public static int getCPUConsumption(float cpuPct,
                                    Node host)

Get the CPU consumption of a virtual machine. The virtual machine must have 1 virtual CPU.

Parameters:

cpuPct - the percentage of CPU consumed by the virtual machine

host - the host of the virtual machine

Returns:

the CPU consumption

setNodesBlackList

public void setNodesBlackList(List<String> nodes)

Set the nodes black list.

Parameters:

nodes - the list

getNodesBlackList

public List<String> getNodesBlackList()

Get the nodes black list.

Returns:

a list, that may be empty

setNodesWhiteList

public void setNodesWhiteList(List<String> nodes)

Set the nodes white list.

Parameters:

nodes - the list

getNodesWhiteList

public List<String> getNodesWhiteList()

Get the nodes white list.

Returns:

a list, that may be empty