cq.ha

Class HANoFailoverClientListener

java.lang.Object

com.gemstone.gemfire.cache.util.CacheListenerAdapter

cq.ha.HANoFailoverClientListener

All Implemented Interfaces:

com.gemstone.gemfire.cache.CacheCallback, com.gemstone.gemfire.cache.CacheListener

public class HANoFailoverClientListener
extends com.gemstone.gemfire.cache.util.CacheListenerAdapter

This class is a CacheListener implementation attached to the cache-clients for test validations. The callback methods validate the order of the data coming via the events. This listener is used for no-failover test cases. In this cq version, we additionally track the expected number of CQEvents: - afterCreate (all should contribute to expected CQ Create Events) - afterInvalidate (all should contribute to expected CQ Destroy Events) - afterUpdate (those with oldValue=null => expected CQ Create Events, others CQ Update Events) - afterDestroy (if previously invalidated, no-op. Otherwise, increment expected CQ Destroy Event count)

Field Summary

Fields

Modifier and Type	Field and Description
static long	expectedCQCreates Counters for entry events received by this VM
static long	expectedCQDestroys
static long	expectedCQUpdates

Constructor Summary

Constructors

Constructor and Description
HANoFailoverClientListener()

Method Summary

Methods

Modifier and Type	Method and Description
void	afterCreate(com.gemstone.gemfire.cache.EntryEvent event) This method performs the following tasks: 1)Increment the count of afterCreate in Validator 2)Verify that value received in the event is not null as Feeder always does create() on a key with a Long value.
void	afterDestroy(com.gemstone.gemfire.cache.EntryEvent event) This method performs the following tasks: 1)Increment the count of afterDestroy in Validator 2)If the oldValue in the event is not null, update the latest value map for the event key with the oldValue received.
void	afterInvalidate(com.gemstone.gemfire.cache.EntryEvent event) This method performs the following tasks: 1)Increment the count of afterInvalidate in Validator 2)Verify that oldValue received in the event is not null as Feeder does invalidate() on only those keys which have non-null values. 3)Update the latest value map for the event key with the oldValue received.
void	afterUpdate(com.gemstone.gemfire.cache.EntryEvent event) This method performs the following tasks: 1)Increment the count of afterUpdate in Validator 2)Verify that value received in the event is not null as Feeder always generates update on a key with a Long value one more than the previous one on this key. 3)If the oldValue received in the event is null,it implies that Feeder invalidated this key in previous operation.
static void	throwException(String reason) This method increments the number of exceptions occured counter in the blackboard and put the reason string against the exception number in the shared map.
static void	verifyCQEventsReceived() Method to compare the expected number of CQEvents (determined by region events received by this Listener) with the actual CQEvents received.

Methods inherited from class com.gemstone.gemfire.cache.util.CacheListenerAdapter

afterRegionClear, afterRegionCreate, afterRegionDestroy, afterRegionInvalidate, afterRegionLive, close

Methods inherited from class java.lang.Object

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

Field Detail

expectedCQCreates

public static long expectedCQCreates

Counters for entry events received by this VM

expectedCQDestroys

public static long expectedCQDestroys

expectedCQUpdates

public static long expectedCQUpdates

Constructor Detail

HANoFailoverClientListener

public HANoFailoverClientListener()

Method Detail

afterCreate

public void afterCreate(com.gemstone.gemfire.cache.EntryEvent event)

This method performs the following tasks:
1)Increment the count of afterCreate in Validator
2)Verify that value received in the event is not null as Feeder always does create() on a key with a Long value.
3)If the value is not zero( meaning the first create() call on this key), validate that the new value is exactly one more than the previous value.
4)Update the latest value map for the event key with the new value received.

Specified by:

afterCreate in interface com.gemstone.gemfire.cache.CacheListener

Overrides:

afterCreate in class com.gemstone.gemfire.cache.util.CacheListenerAdapter

Parameters:

event - - the entry event received in callback

afterUpdate

public void afterUpdate(com.gemstone.gemfire.cache.EntryEvent event)

This method performs the following tasks:
1)Increment the count of afterUpdate in Validator
2)Verify that value received in the event is not null as Feeder always generates update on a key with a Long value one more than the previous one on this key.
3)If the oldValue received in the event is null,it implies that Feeder invalidated this key in previous operation. In this case, validate that the newValue received in the event is one more than that stored in the local latestValues map
4)If the oldValue received in the event is not null, validate that the newValue received in the event is one more than the oldValue received in the event.
4)Update the latest value map for the event key with the new value received.

Specified by:

afterUpdate in interface com.gemstone.gemfire.cache.CacheListener

Overrides:

afterUpdate in class com.gemstone.gemfire.cache.util.CacheListenerAdapter

Parameters:

event - - the entry event received in callback

afterInvalidate

public void afterInvalidate(com.gemstone.gemfire.cache.EntryEvent event)

This method performs the following tasks:
1)Increment the count of afterInvalidate in Validator
2)Verify that oldValue received in the event is not null as Feeder does invalidate() on only those keys which have non-null values.
3)Update the latest value map for the event key with the oldValue received.

Specified by:

afterInvalidate in interface com.gemstone.gemfire.cache.CacheListener

Overrides:

afterInvalidate in class com.gemstone.gemfire.cache.util.CacheListenerAdapter

Parameters:

event - - the entry event received in callback

afterDestroy

public void afterDestroy(com.gemstone.gemfire.cache.EntryEvent event)

This method performs the following tasks:
1)Increment the count of afterDestroy in Validator
2)If the oldValue in the event is not null, update the latest value map for the event key with the oldValue received. If the value is null, it implies that Feeder did a invalidate() in its previous operation on this key and hence no need to update the local latestValues map.

Specified by:

afterDestroy in interface com.gemstone.gemfire.cache.CacheListener

Overrides:

afterDestroy in class com.gemstone.gemfire.cache.util.CacheListenerAdapter

Parameters:

event - - the entry event received in callback

throwException

public static void throwException(String reason)

This method increments the number of exceptions occured counter in the blackboard and put the reason string against the exception number in the shared map.

Parameters:

reason - - string description of the cause of the exception.

verifyCQEventsReceived

public static void verifyCQEventsReceived()

Method to compare the expected number of CQEvents (determined by region events received by this Listener) with the actual CQEvents received.