Package org.forgerock.opendj.ldap

Interface ConnectionPoolEventListener

All Superinterfaces:

EventListener

public interface ConnectionPoolEventListener
extends EventListener

An object that registers to be notified when a connection pool grows or shrinks.

NOTE 1: Since listeners are prone to race conditions they should only be used for monitoring and alerts. Specifically, an application should not use this mechanism to deduce whether a request can be sent or not. It should send the request and hope for the best.

NOTE 2: connection pool implementations must ensure that only one event is sent at a time. Event listener implementations should not need to be thread safe unless there are (re-)used by multiple connection pools.

See Also:

• LdapClients.CONNECTION_POOL_EVENT_LISTENER

Field Summary

Fields

Modifier and Type	Field	Description
static final ConnectionPoolEventListener	NO_OP	An event listener implementation which ignores all events.

Method Summary

Modifier and Type	Method	Description
void	handlePoolGrowing(ConnectionPool connectionPool)	Invoked when the connection pool is growing, i.e.
void	handlePoolShrinking(ConnectionPool connectionPool)	Invoked when the connection pool is shrinking, i.e.

Field Details

NO_OP

static final ConnectionPoolEventListener NO_OP

An event listener implementation which ignores all events.

Method Details

handlePoolGrowing

void handlePoolGrowing(ConnectionPool connectionPool)

Invoked when the connection pool is growing, i.e. the number of connections in the pool is about to be increased by one.

Parameters:

connectionPool - The connection pool which is growing.

handlePoolShrinking

void handlePoolShrinking(ConnectionPool connectionPool)

Invoked when the connection pool is shrinking, i.e. the number of connections in the pool is about to be decreased by one.

Parameters:

connectionPool - The connection pool which is shrinking.