splitBrain

Class SplitBrainBB

java.lang.Object

hydra.blackboard.Blackboard

splitBrain.SplitBrainBB

public class SplitBrainBB
extends Blackboard

SplitBrain Blackboard

Since:

5.5

Field Summary

Fields

Modifier and Type	Field and Description
static int	adminForcedDisconnects
static SplitBrainBB	bbInstance
static int	dropConnectionComplete
static int	ExecutionNumber
static int	expectedAdminForcedDisconnects
static int	FinishedTask
static int	loadClientRegionSize
static int	NumVMsInDS
static int	NumVMsStopped
static int	OpsComplete
static int	ReadyToBegin
static int	TimeToRespond
static int	TimeToStop

Fields inherited from class hydra.blackboard.Blackboard

counterNames, GemFire, RMI

Constructor Summary

Constructors

Constructor and Description
SplitBrainBB()
SplitBrainBB(java.lang.String name, java.lang.String type) Creates a sample blackboard using the specified name and transport type.

Method Summary

Modifier and Type	Method and Description
static void	addDisconnectedClient(int vmid) Add clientVm to a list of client Vms which received - RegionDestroyedEvent with Operation = FORCED_DISCONNECT - CacheClosedException Caused by ForcedDisconnectException - ShutdownException Caused by ForcedDisconnectException
static void	addEligibleCoordinator(java.lang.String clientName) Add clientName to list of eligibleCoordinators.
static void	addExpectedReconnectedClient(int vmid) Add clientVm to a list of client Vms which received - RegionDestroyedEvent with Operation = FORCED_DISCONNECT - CacheClosedException Caused by ForcedDisconnectException - ShutdownException Caused by ForcedDisconnectException
static void	addExpectForcedDisconnect(int vmid) Add vmId to list of clients expected on the losing partition (these clients/locators should see ForcedDisconnectExceptions (in Shutdown or CacheClosed Exceptions or in the RegionDestroyedEvent).
static void	addMember(com.gemstone.gemfire.distributed.DistributedMember dm, boolean inSurvivingSide) Add to a list of members expected to receive memberCrashed events.
static void	addReconnectedClient(int vmid) Add clientVm to a list of client Vms which were disconnected and then became reconnected
static SplitBrainBB	getBB() Get the Blackboard
static java.util.Set	getEligibleCoordinators() Get list of eligibleCoordinators
static java.util.Set	getExpectedReconnectList() Easy access to list of clients that reported forced disconnects
static java.util.Set	getExpectForcedDisconnects() Easy access to list of clientVms that expect to receive forced disconnects
static java.util.Set	getForcedDisconnectList() Easy access to list of clients that reported forced disconnects
static java.lang.String	getLosingSideHost() Get the losingSideHost (actual hostname) from the blackboard
static java.util.Set	getMembers() Easy access to list of members expecting memberCrashedEvents
static java.util.Set	getReconnectedList() Easy access to list of clients that reported reconnecting
static void	HydraTask_initialize() Initialize the SplitBrain Blackboard
static void	postSelfAsLosingSideHost() Invoke in a losing side VM to post hostname to BB (as the losing side host)
static void	putLosingSideHost(java.lang.String hostName) Put the losingSideHost (actual hostname) out to blackboard
static void	updateMember(com.gemstone.gemfire.distributed.DistributedMember dm, boolean reportedBySurvivingSide) Update member memberCrashed event count

Methods inherited from class hydra.blackboard.Blackboard

createSharedCounters, createSharedLock, createSharedMap, getCounterNames, getSharedCounter, getSharedCounters, getSharedLock, getSharedMap, print, printSharedCounters, printSharedMap

Methods inherited from class java.lang.Object

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

Field Detail

bbInstance

public static SplitBrainBB bbInstance

ExecutionNumber

public static int ExecutionNumber

ReadyToBegin

public static int ReadyToBegin

TimeToRespond

public static int TimeToRespond

FinishedTask

public static int FinishedTask

TimeToStop

public static int TimeToStop

NumVMsInDS

public static int NumVMsInDS

NumVMsStopped

public static int NumVMsStopped

OpsComplete

public static int OpsComplete

dropConnectionComplete

public static int dropConnectionComplete

loadClientRegionSize

public static int loadClientRegionSize

adminForcedDisconnects

public static int adminForcedDisconnects

expectedAdminForcedDisconnects

public static int expectedAdminForcedDisconnects

Constructor Detail

SplitBrainBB

public SplitBrainBB()

SplitBrainBB

public SplitBrainBB(java.lang.String name,
                    java.lang.String type)

Creates a sample blackboard using the specified name and transport type.

Method Detail

getBB

public static SplitBrainBB getBB()

Get the Blackboard

HydraTask_initialize

public static void HydraTask_initialize()

Initialize the SplitBrain Blackboard

addEligibleCoordinator

public static void addEligibleCoordinator(java.lang.String clientName)

Add clientName to list of eligibleCoordinators. This method is meant to be called by client managed locators after they have determined they are not the current coordinator.

addExpectForcedDisconnect

public static void addExpectForcedDisconnect(int vmid)

Add vmId to list of clients expected on the losing partition (these clients/locators should see ForcedDisconnectExceptions (in Shutdown or CacheClosed Exceptions or in the RegionDestroyedEvent).

getExpectForcedDisconnects

public static java.util.Set getExpectForcedDisconnects()

Easy access to list of clientVms that expect to receive forced disconnects

addDisconnectedClient

public static void addDisconnectedClient(int vmid)

Add clientVm to a list of client Vms which received - RegionDestroyedEvent with Operation = FORCED_DISCONNECT - CacheClosedException Caused by ForcedDisconnectException - ShutdownException Caused by ForcedDisconnectException

getForcedDisconnectList

public static java.util.Set getForcedDisconnectList()

Easy access to list of clients that reported forced disconnects

addExpectedReconnectedClient

public static void addExpectedReconnectedClient(int vmid)

Add clientVm to a list of client Vms which received - RegionDestroyedEvent with Operation = FORCED_DISCONNECT - CacheClosedException Caused by ForcedDisconnectException - ShutdownException Caused by ForcedDisconnectException

getExpectedReconnectList

public static java.util.Set getExpectedReconnectList()

Easy access to list of clients that reported forced disconnects

addReconnectedClient

public static void addReconnectedClient(int vmid)

Add clientVm to a list of client Vms which were disconnected and then became reconnected

getReconnectedList

public static java.util.Set getReconnectedList()

Easy access to list of clients that reported reconnecting

getEligibleCoordinators

public static java.util.Set getEligibleCoordinators()

Get list of eligibleCoordinators

postSelfAsLosingSideHost

public static void postSelfAsLosingSideHost()

Invoke in a losing side VM to post hostname to BB (as the losing side host)

putLosingSideHost

public static void putLosingSideHost(java.lang.String hostName)

Put the losingSideHost (actual hostname) out to blackboard

getLosingSideHost

public static java.lang.String getLosingSideHost()

Get the losingSideHost (actual hostname) from the blackboard

addMember

public static void addMember(com.gemstone.gemfire.distributed.DistributedMember dm,
                             boolean inSurvivingSide)

Add to a list of members expected to receive memberCrashed events.

updateMember

public static void updateMember(com.gemstone.gemfire.distributed.DistributedMember dm,
                                boolean reportedBySurvivingSide)

Update member memberCrashed event count

getMembers

public static java.util.Set getMembers()

Easy access to list of members expecting memberCrashedEvents