org.ow2.proactive.resourcemanager.nodesource.infrastructure

Class HostTracker

java.lang.Object

org.ow2.proactive.resourcemanager.nodesource.infrastructure.HostTracker

All Implemented Interfaces:

Serializable

public class HostTracker
extends Object
implements Serializable

This class tracks the information related to node deployment on a host. It is used by HostsFileBasedInfrastructureManager and HostTracker instances are persisted along with the node source data. All non-final fields of this class should be thread-safe.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.apache.log4j.Logger	logger

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	HostTracker(String configuredAddress, int configuredNodeNumber, InetAddress resolvedAddress)

Method Summary

Modifier and Type	Method and Description
protected int	addAndGetLostNodeNotification()
protected String	getConfiguredAddress()
protected int	getConfiguredNodeNumber()
protected int	getNeededNodesNumber() Compute the number of nodes that are needed by this host at that moment.
protected InetAddress	getResolvedAddress()
protected boolean	hasAliveNodes()
protected boolean	needsNodes()
protected void	putAliveNodeUrl(String aliveNodeUrl) Registers the URL of an alive node and increment the alive node counter.
protected void	putDownNodeUrl(String downNodeUrl) Registers the URL of a down node and increment the down node counter.
protected void	putRemovedNodeUrl(String removedNodeUrl) Registers the URL of a removed node and increment the removed node counter.
protected void	resetLostNodeNotifications()
protected void	setNeedsNodes(boolean needNodesFlag) Say whether this host requires nodes.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected static final org.apache.log4j.Logger logger

Constructor Detail

HostTracker

protected HostTracker(String configuredAddress,
                      int configuredNodeNumber,
                      InetAddress resolvedAddress)

Method Detail

getConfiguredAddress

protected String getConfiguredAddress()

Returns:

the host as it is written in the hosts file supplied by the user

getResolvedAddress

protected InetAddress getResolvedAddress()

Returns:

the InetAddress representation of the host

needsNodes

protected boolean needsNodes()

Returns:

whether this host requires nodes

setNeedsNodes

protected void setNeedsNodes(boolean needNodesFlag)

Say whether this host requires nodes.

addAndGetLostNodeNotification

protected int addAndGetLostNodeNotification()

resetLostNodeNotifications

protected void resetLostNodeNotifications()

getConfiguredNodeNumber

protected int getConfiguredNodeNumber()

getNeededNodesNumber

protected int getNeededNodesNumber()

Compute the number of nodes that are needed by this host at that moment. The needed number of nodes is defined by the initially configured number of hosts (written in the host file), minus the number of alive nodes. Note that removed nodes are not taken into account, so nodes that have been removed manually might reappear in a subsequent deployment. If one wants to remove a node definitively across multiple deployments, he must edit the configured number of nodes.

hasAliveNodes

protected boolean hasAliveNodes()

Returns:

whether the host still has nodes alive

putAliveNodeUrl

protected void putAliveNodeUrl(String aliveNodeUrl)

Registers the URL of an alive node and increment the alive node counter.

putDownNodeUrl

protected void putDownNodeUrl(String downNodeUrl)

Registers the URL of a down node and increment the down node counter.

putRemovedNodeUrl

protected void putRemovedNodeUrl(String removedNodeUrl)

Registers the URL of a removed node and increment the removed node counter.

toString

public String toString()

Overrides:

toString in class Object