com.groiss.cluster

Class ClusterInfo

java.lang.Object

com.groiss.cluster.ClusterInfo

public class ClusterInfo
extends Object

This class can be used to acquire cluster specific data.

Constructor Summary

Constructors

Constructor and Description
ClusterInfo()

Method Summary

Modifier and Type	Method and Description
static String	getMyNodeId() Gets the id of this node.
static void	getNodeStatusHAProxy(HttpServletRequest req, HttpServletResponse res) Gets the state of the node suitable for healthchecks via haproxy.
static boolean	isClustered() Determines if the system is clustered.
static boolean	isMainNode(boolean withDBCheck) Determines if this node is the main cluster node which runs the cluster timers.

Methods inherited from class java.lang.Object

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

Constructor Detail

ClusterInfo

public ClusterInfo()

Method Detail

isClustered

public static boolean isClustered()

Determines if the system is clustered.

Returns:

true, if the node is part of a cluster, false otherwise.

isMainNode

public static boolean isMainNode(boolean withDBCheck)

Determines if this node is the main cluster node which runs the cluster timers.

Parameters:

withDBCheck - if false, the check is done in memory, if true the check is done by consulting the database.

Returns:

true, if the system is clustered and the node is the main node.

getMyNodeId

public static String getMyNodeId()

Gets the id of this node.

Returns:

The id of this node, or null if the system is not clustered.

getNodeStatusHAProxy

public static void getNodeStatusHAProxy(HttpServletRequest req,
                                        HttpServletResponse res)

Gets the state of the node suitable for healthchecks via haproxy. Will set SC_OK if the node is loadbalanced and logins are enabled. Will set SC_NOT_FOUND if the node is loadbalanced, but logins are disabled without evicting sessions. Will set SC_FORBIDDEN else.

Parameters:

req -

res -