org.opencastproject.serviceregistry.api

Class SystemLoad

java.lang.Object

org.opencastproject.serviceregistry.api.SystemLoad

public class SystemLoad
extends Object

Mappings between the registered hosts and their load factors.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SystemLoad.NodeLoad A record of a node in the cluster and its load factor

Field Summary

Fields

Modifier and Type	Field and Description
protected Map<String,SystemLoad.NodeLoad>	nodeLoads The list of nodes and their current load

Constructor Summary

Constructors

Constructor and Description
SystemLoad() No-arg constructor needed by JAXB

Method Summary

Modifier and Type	Method and Description
void	addNodeLoad(SystemLoad.NodeLoad load) Adds a node to the map of load values, overwriting an existing entry if the node is already present in the map
boolean	containsHost(String host) Returns true if the load map contains the host in question.
SystemLoad.NodeLoad	get(String host) Gets a specific host from the map, if present.
Collection<SystemLoad.NodeLoad>	getNodeLoads() Get the list of nodes and their current loadfactor.
void	setNodeLoads(Collection<SystemLoad.NodeLoad> newLoads) Sets the list of nodes and their current loadfactor.
String	toString()
void	updateNodeLoad(String host, float modifier) Updates the load factor for a node

Methods inherited from class java.lang.Object

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

Field Detail

nodeLoads

protected Map<String,SystemLoad.NodeLoad> nodeLoads

The list of nodes and their current load

Constructor Detail

SystemLoad

public SystemLoad()

No-arg constructor needed by JAXB

Method Detail

getNodeLoads

public Collection<SystemLoad.NodeLoad> getNodeLoads()

Get the list of nodes and their current loadfactor.

Returns:

the nodeLoads

setNodeLoads

public void setNodeLoads(Collection<SystemLoad.NodeLoad> newLoads)

Sets the list of nodes and their current loadfactor.

Parameters:

newLoads - the nodeLoads to set

updateNodeLoad

public void updateNodeLoad(String host,
                           float modifier)
                    throws NotFoundException

Updates the load factor for a node

Parameters:

host - The host to update

modifier - The modifier to apply to the load

Throws:

NotFoundException

addNodeLoad

public void addNodeLoad(SystemLoad.NodeLoad load)

Adds a node to the map of load values, overwriting an existing entry if the node is already present in the map

Parameters:

load - the nodeLoad to add

get

public SystemLoad.NodeLoad get(String host)

Gets a specific host from the map, if present. If the node is not present, or the host value is null, this method returns null.

Parameters:

host - The hostname of the host you are interested in.

Returns:

The specific host from the map, if present. If the node is not present, or the host value is null, this method returns null.

containsHost

public boolean containsHost(String host)

Returns true if the load map contains the host in question.

Parameters:

host - The hostname of the host you are interested in.

Returns:

True if the host is present, false if the host is not, or the host variable is null.

toString

public String toString()

Overrides:

toString in class Object