ome.services.blitz.redirect

Class AbstractRedirector

java.lang.Object

ome.services.blitz.redirect.AbstractRedirector

All Implemented Interfaces:

Redirector

Direct Known Subclasses:

ConfigRedirector, ScaleRedirector

public abstract class AbstractRedirector
extends Object
implements Redirector

Base Redirector

Since:

Beta-4.0-RC2

Nested Class Summary

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

Redirector.Context

Field Summary

Fields

Modifier and Type	Field and Description
protected Executor	executor
protected org.slf4j.Logger	log
protected static String	ROUTED_FROM

Constructor Summary

Constructors

Constructor and Description
AbstractRedirector(Executor ex)

Method Summary

Modifier and Type	Method and Description
protected boolean	alreadyRouted(Ice.Current current)
protected String	findProxy(Redirector.Context ctx, String redirect)
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.
protected String	getRedirect(Redirector.Context ctx) Returns the current redirect, to which all calls to Redirector.getProxyOrNull(Context, String, Glacier2.SessionControlPrx, Ice.Current) will be pointed.
protected boolean	initializeRedirect(Redirector.Context ctx, String managerUuid) Set the new redirect value if null, or if the uuid is null or empty, then the existing redirect will be removed.
protected String	nodeProxyQuery(Redirector.Context ctx, String uuid, String query)
protected Glacier2.SessionPrx	obtainProxy(String proxyString, Redirector.Context ctx, String userId, Glacier2.SessionControlPrx control, Ice.Current current)
protected String	proxyForSession(Redirector.Context ctx, String sessionUuid)

Methods inherited from class java.lang.Object

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

Methods inherited from interface ome.services.blitz.redirect.Redirector

chooseNextRedirect, handleRingShutdown

Field Detail

ROUTED_FROM

protected static final String ROUTED_FROM

See Also:

Constant Field Values

log

protected final org.slf4j.Logger log

executor

protected final Executor executor

Constructor Detail

AbstractRedirector

public AbstractRedirector(Executor ex)

Method Detail

getProxyOrNull

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

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

userId - Not null.

Returns:

Possibly null.

Throws:

Glacier2.CannotCreateSessionException

See Also:

ROUTED_FROM

alreadyRouted

protected boolean alreadyRouted(Ice.Current current)

obtainProxy

protected Glacier2.SessionPrx obtainProxy(String proxyString,
                                          Redirector.Context ctx,
                                          String userId,
                                          Glacier2.SessionControlPrx control,
                                          Ice.Current current)
                                   throws Glacier2.CannotCreateSessionException

Throws:

Glacier2.CannotCreateSessionException

getRedirect

protected String getRedirect(Redirector.Context ctx)

Returns the current redirect, to which all calls to Redirector.getProxyOrNull(Context, String, Glacier2.SessionControlPrx, Ice.Current) will be pointed. May be null, but is typically set to a non-null value when the first Ring joins the cluster.

initializeRedirect

protected boolean initializeRedirect(Redirector.Context ctx,
                                     String managerUuid)

Set the new redirect value if null, or if the uuid is null or empty, then the existing redirect will be removed. Otherwise the value is set if it is currently missing.

findProxy

protected String findProxy(Redirector.Context ctx,
                           String redirect)

proxyForSession

protected String proxyForSession(Redirector.Context ctx,
                                 String sessionUuid)

nodeProxyQuery

protected String nodeProxyQuery(Redirector.Context ctx,
                                String uuid,
                                String query)