dist1.acb.CBL
Class CBL

java.lang.Object
  dist1.acb.CBL.CBL

public class CBL

extends java.lang.Object

CBL

Version:

$Revision: 1.39 $

Author:

Alexander Stasiv

Nested Class Summary

static class

CBL.TransitiveStateException Exection to indicate case when local server can not be retrieved after a timout

Method Summary

static CBL	getInstance() Returns the only instance of the class
static Primary	getPrimaryServer() Tries to retrieve local Primary server If current server is Backup calls to server.forceGetReplicas()
java.lang.ThreadGroup	getRootThreadGroup() Returns thread group with all threads
static Server	getServer() Tries to retrieve local server
java.lang.String	getServerName() Retrns name of the server
static void	main(java.lang.String[] args) Run the Application
void	pbBecomeHotPrimary(java.util.LinkedList replicasBackup) Start the Primary using the Hot rotocol
void	rejoin(java.lang.String source, java.lang.String reason) Invoked by outside serveices in order to restart the application
void	shutdownApplicaton(java.lang.String source, java.lang.String reason) Invoked by outside serveices in order to shutdown the application

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static CBL getInstance()

Returns the only instance of the class

Returns:

The instance

getPrimaryServer

public static Primary getPrimaryServer()
                                throws CBL.TransitiveStateException

Tries to retrieve local Primary server If current server is Backup calls to server.forceGetReplicas()

Returns:

Current Primary local server, or null if Backup still on-line

Throws:

CBL.TransitiveStateException - if we reached timeout

getRootThreadGroup

public java.lang.ThreadGroup getRootThreadGroup()

Returns thread group with all threads

Returns:

Group with all threads

getServer

public static Server getServer()
                        throws CBL.TransitiveStateException

Tries to retrieve local server

Returns:

Current local server

Throws:

CBL.TransitiveStateException - if we reached timeout

main

public static void main(java.lang.String[] args)

Run the Application

Parameters:

args - Command line arguments

getServerName

public java.lang.String getServerName()

Retrns name of the server

Returns:

Name of the server

pbBecomeHotPrimary

public void pbBecomeHotPrimary(java.util.LinkedList replicasBackup)
                        throws java.lang.Exception

Start the Primary using the Hot rotocol

Parameters:

replicasBackup - List with replicas

Throws:

CBL.TransitiveStateException - if something wrong

java.lang.Exception

rejoin

public void rejoin(java.lang.String source,
                   java.lang.String reason)

Invoked by outside serveices in order to restart the application

Parameters:

source - Initiator of shutdowning

reason - A reason

shutdownApplicaton

public void shutdownApplicaton(java.lang.String source,
                               java.lang.String reason)

Invoked by outside serveices in order to shutdown the application

Parameters:

source - Initiator of shutdowning

reason - A reason