com.sun.enterprise.ee.cms.impl.common

Class RecoveryTargetSelector

java.lang.Object

com.sun.enterprise.ee.cms.impl.common.RecoveryTargetSelector

public class RecoveryTargetSelector
extends Object

Uses a specified algorithm to determine a member that will be selected to handle recovery operations on failure of a member. The algorithms are specified through a RecoverySelectorMode object that specifies typ safe enums such as SIMPLESELECT indicating a simple ordered selection algorithm and HOSTSELECT indicating a selection algorithm that ensures that the recovery target is always on a different host from a single host.

Version:

$Revision$

Author:

Shreedhar Ganapathy Date: Jan 20, 2004

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RecoveryTargetSelector.RecoverySelectorMode

Method Summary

Modifier and Type	Method and Description
static boolean	resolveRecoveryTarget(RecoveryTargetSelector.RecoverySelectorMode mode, List<com.sun.enterprise.ee.cms.core.GMSMember> members, String failedMemberToken, GMSContext ctx) Uses a resolution algorithm to determine whether the member this process represents is indeed responsible for performing recovery operations.
static void	setRecoverySelectionState(String recovererMemberToken, String failedMemberToken, String groupName)

Methods inherited from class java.lang.Object

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

Method Detail

resolveRecoveryTarget

public static boolean resolveRecoveryTarget(RecoveryTargetSelector.RecoverySelectorMode mode,
                                            List<com.sun.enterprise.ee.cms.core.GMSMember> members,
                                            String failedMemberToken,
                                            GMSContext ctx)

Uses a resolution algorithm to determine whether the member this process represents is indeed responsible for performing recovery operations.

Parameters:

mode - - as specified by the RecoverySelectorMode

members - - a vector of members from a view that existed prior to the failure. Ideally, this view contains the failedMemberToken.

failedMemberToken - - failed member's identity token

ctx - - The GMSContext pertaining to the failed member;s group.

Returns:

boolean

setRecoverySelectionState

public static void setRecoverySelectionState(String recovererMemberToken,
                                             String failedMemberToken,
                                             String groupName)