org.apache.webbeans.web.failover

Class DefaultOwbFailOverService

java.lang.Object

org.apache.webbeans.web.failover.DefaultOwbFailOverService

All Implemented Interfaces:

FailOverService

public class DefaultOwbFailOverService
extends Object
implements FailOverService

Default implementation of the FailOverService.

Field Summary

Fields

Modifier and Type	Field and Description
static String	ATTRIBUTE_CONVERSATION_CONTEXT_MAP
static String	ATTRIBUTE_SESSION_CONTEXT
static String	CONFIG_IS_SUPPORT_FAILOVER
static String	CONFIG_IS_SUPPORT_PASSIVATE
static String	CONFIG_RESOURCES_SERIALIZATION_HANDLER

Fields inherited from interface org.apache.webbeans.spi.FailOverService

NOT_HANDLED

Constructor Summary

Constructors

Constructor and Description
DefaultOwbFailOverService()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	addActivationListenerToSession(javax.servlet.http.HttpSession session) Adds the FailOverSessionActivationListener to the current HttpSession.
protected void	addFailOverBagToSession(FailOverBag bag, javax.servlet.http.HttpSession session) Store the FailOverBag as attribute to the current HttpSession.
void	enableFailOverSupport(boolean supportFailOver)
void	enablePassivationSupport(boolean supportPassivation)
String	getJvmId()
ObjectInputStream	getObjectInputStream(InputStream in) Get object input stream.
ObjectOutputStream	getObjectOutputStream(OutputStream out) Get object output stream.
Object	handleResource(javax.enterprise.inject.spi.Bean<?> bean, Object resourceObject, ObjectInput in, ObjectOutput out) Except the EJB remote stub, it is hard to handle other types of resources.
boolean	isPassivation()
boolean	isSupportFailOver()
boolean	isSupportPassivation()
protected void	restoreBeansFromFailOverBag(FailOverBag bag, javax.servlet.http.HttpSession session) Restores the session and conversation contexts from the given FailOverBag.
void	sessionDidActivate(javax.servlet.http.HttpSession session)
void	sessionIsIdle(javax.servlet.http.HttpSession session)
void	sessionIsInUse(javax.servlet.http.HttpSession session)
void	sessionWillPassivate(javax.servlet.http.HttpSession session)
protected void	storeBeansInFailOverBag(FailOverBag bag, javax.servlet.http.HttpSession session) Stores the session and conversation contexts in the FailOverBag.

Methods inherited from class java.lang.Object

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

Field Detail

CONFIG_IS_SUPPORT_FAILOVER

public static final String CONFIG_IS_SUPPORT_FAILOVER

See Also:

Constant Field Values

CONFIG_IS_SUPPORT_PASSIVATE

public static final String CONFIG_IS_SUPPORT_PASSIVATE

See Also:

Constant Field Values

CONFIG_RESOURCES_SERIALIZATION_HANDLER

public static final String CONFIG_RESOURCES_SERIALIZATION_HANDLER

See Also:

Constant Field Values

ATTRIBUTE_SESSION_CONTEXT

public static final String ATTRIBUTE_SESSION_CONTEXT

See Also:

Constant Field Values

ATTRIBUTE_CONVERSATION_CONTEXT_MAP

public static final String ATTRIBUTE_CONVERSATION_CONTEXT_MAP

See Also:

Constant Field Values

Constructor Detail

DefaultOwbFailOverService

public DefaultOwbFailOverService()

Method Detail

sessionIsIdle

public void sessionIsIdle(javax.servlet.http.HttpSession session)

Specified by:

sessionIsIdle in interface FailOverService

sessionIsInUse

public void sessionIsInUse(javax.servlet.http.HttpSession session)

Specified by:

sessionIsInUse in interface FailOverService

sessionDidActivate

public void sessionDidActivate(javax.servlet.http.HttpSession session)

Specified by:

sessionDidActivate in interface FailOverService

sessionWillPassivate

public void sessionWillPassivate(javax.servlet.http.HttpSession session)

Specified by:

sessionWillPassivate in interface FailOverService

addActivationListenerToSession

protected void addActivationListenerToSession(javax.servlet.http.HttpSession session)

Adds the FailOverSessionActivationListener to the current HttpSession. It must not be manually registered when we store it as session attribute.

Parameters:

session - The current HttpSession.

addFailOverBagToSession

protected void addFailOverBagToSession(FailOverBag bag,
                           javax.servlet.http.HttpSession session)

Store the FailOverBag as attribute to the current HttpSession. So when the session is fail over to other JVM or local disk, the attribute could also be serialized.

Parameters:

bag - The FailOverBag.

session - The current HttpSession.

storeBeansInFailOverBag

protected void storeBeansInFailOverBag(FailOverBag bag,
                           javax.servlet.http.HttpSession session)

Stores the session and conversation contexts in the FailOverBag.

Parameters:

bag - The FailOverBag.

session - The current HttpSession.

restoreBeansFromFailOverBag

protected void restoreBeansFromFailOverBag(FailOverBag bag,
                               javax.servlet.http.HttpSession session)

Restores the session and conversation contexts from the given FailOverBag.

Parameters:

bag - The FailOverBag.

session - The current HttpSession.

handleResource

public Object handleResource(javax.enterprise.inject.spi.Bean<?> bean,
                    Object resourceObject,
                    ObjectInput in,
                    ObjectOutput out)

Except the EJB remote stub, it is hard to handle other types of resources. Here we delegate serialization/deserialization to the application provided SerializationHandler.

Specified by:

handleResource in interface FailOverService

getObjectInputStream

public ObjectInputStream getObjectInputStream(InputStream in)
                                       throws IOException

Get object input stream. Note, the stream should support deserialize javassist objects.

Specified by:

getObjectInputStream in interface FailOverService

Returns:

custom object input stream.

Throws:

IOException

getObjectOutputStream

public ObjectOutputStream getObjectOutputStream(OutputStream out)
                                         throws IOException

Get object output stream. Note, the stream should support deserialize javassist objects.

Specified by:

getObjectOutputStream in interface FailOverService

Returns:

custom object output stream.

Throws:

IOException

getJvmId

public String getJvmId()

Specified by:

getJvmId in interface FailOverService

isSupportFailOver

public boolean isSupportFailOver()

Specified by:

isSupportFailOver in interface FailOverService

enableFailOverSupport

public void enableFailOverSupport(boolean supportFailOver)

Specified by:

enableFailOverSupport in interface FailOverService

isSupportPassivation

public boolean isSupportPassivation()

Specified by:

isSupportPassivation in interface FailOverService

enablePassivationSupport

public void enablePassivationSupport(boolean supportPassivation)

Specified by:

enablePassivationSupport in interface FailOverService

isPassivation

public boolean isPassivation()