ome.services.blitz.redirect

Class ScaleRedirector

java.lang.Object

ome.services.blitz.redirect.AbstractRedirector

ome.services.blitz.redirect.ScaleRedirector

All Implemented Interfaces:

Redirector

public class ScaleRedirector
extends AbstractRedirector

Planned implementation (NYI): will use the "Node.scale" column to randomly choose a target.

Since:

Beta-4.0-RC2

Nested Class Summary

Nested classes/interfaces inherited from interface ome.services.blitz.redirect.Redirector

Redirector.Context

Field Summary

Fields inherited from class ome.services.blitz.redirect.AbstractRedirector

executor, log, ROUTED_FROM

Constructor Summary

Constructors

Constructor and Description
ScaleRedirector(Executor ex)

Method Summary

Modifier and Type	Method and Description
void	chooseNextRedirect(Redirector.Context context, Set<String> nodeUuids) Does nothing since all redirects are chosen during Redirector.getProxyOrNull(Context, String, Glacier2.SessionControlPrx, Ice.Current)
Glacier2.SessionPrx	getProxyOrNull(Redirector.Context ctx, String userId, Glacier2.SessionControlPrx control, Ice.Current current) Returns null early if the Current has already once been routed by a Redirector implementation, returns an existing session if it can be found, or returns a null.
void	handleRingShutdown(Redirector.Context context, String uuid) Nothing needs to be done on shutdown, since the Ring implementation will properly disable the Node table queried during the next call to Redirector.getProxyOrNull(Context, String, Glacier2.SessionControlPrx, Ice.Current)

Methods inherited from class ome.services.blitz.redirect.AbstractRedirector

alreadyRouted, findProxy, getRedirect, initializeRedirect, nodeProxyQuery, obtainProxy, proxyForSession

Methods inherited from class java.lang.Object

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

Constructor Detail

ScaleRedirector

public ScaleRedirector(Executor ex)

Method Detail

getProxyOrNull

public Glacier2.SessionPrx getProxyOrNull(Redirector.Context ctx,
                                          String userId,
                                          Glacier2.SessionControlPrx control,
                                          Ice.Current current)
                                   throws Glacier2.CannotCreateSessionException

Description copied from class: AbstractRedirector

Returns null early if the Current has already once been routed by a Redirector implementation, returns an existing session if it can be found, or returns a null.

Specified by:

getProxyOrNull in interface Redirector

Overrides:

getProxyOrNull in class AbstractRedirector

userId - Not null.

Returns:

Possibly null.

Throws:

Glacier2.CannotCreateSessionException

See Also:

AbstractRedirector.ROUTED_FROM

chooseNextRedirect

public void chooseNextRedirect(Redirector.Context context,
                               Set<String> nodeUuids)

Does nothing since all redirects are chosen during Redirector.getProxyOrNull(Context, String, Glacier2.SessionControlPrx, Ice.Current)

handleRingShutdown

public void handleRingShutdown(Redirector.Context context,
                               String uuid)

Nothing needs to be done on shutdown, since the Ring implementation will properly disable the Node table queried during the next call to Redirector.getProxyOrNull(Context, String, Glacier2.SessionControlPrx, Ice.Current)