SimpleCoordinator (Apache Tomcat 6.0.53 API Documentation)

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org.apache.catalina.tribes.group.interceptors
Class SimpleCoordinator

java.lang.Object
  org.apache.catalina.tribes.group.ChannelInterceptorBase
      org.apache.catalina.tribes.group.interceptors.SimpleCoordinator

All Implemented Interfaces:: ChannelInterceptor, Heartbeat, MembershipListener

public class SimpleCoordinator
extends ChannelInterceptorBase
extends ChannelInterceptorBase

A dinky coordinator, just uses a sorted version of the member array.

Author:: rnewson

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.catalina.tribes.ChannelInterceptor
`ChannelInterceptor.InterceptorEvent`

Field Summary

Fields inherited from class org.apache.catalina.tribes.group.ChannelInterceptorBase
`log, optionFlag`

Constructor Summary
`SimpleCoordinator()`

Method Summary
`Member`	`getCoordinator()`
`Member[]`	`getView()`
`boolean`	`isCoordinator()`
`void`	`memberAdded(Member member)` A member was added to the group
`void`	`memberDisappeared(Member member)` A member was removed from the group If the member left voluntarily, the Member.getCommand will contain the Member.SHUTDOWN_PAYLOAD data
`void`	`start(int svc)` Starts up the channel.
`void`	`stop(int svc)` Shuts down the channel.
`protected void`	`viewChange(Member[] view)` Override to receive view changes.

Methods inherited from class org.apache.catalina.tribes.group.ChannelInterceptorBase
`accept, fireInterceptorEvent, getLocalMember, getMember, getMembers, getNext, getOptionFlag, getPrevious, hasMembers, heartbeat, messageReceived, okToProcess, sendMessage, setNext, setOptionFlag, setPrevious`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

SimpleCoordinator

public SimpleCoordinator()

Method Detail

memberAdded

public void memberAdded(Member member)

Description copied from interface: MembershipListener

A member was added to the group

Specified by:: memberAdded in interface MembershipListener
Overrides:: memberAdded in class ChannelInterceptorBase

Parameters:: member - Member - the member that was added

memberDisappeared

public void memberDisappeared(Member member)

Description copied from interface: MembershipListener

A member was removed from the group
If the member left voluntarily, the Member.getCommand will contain the Member.SHUTDOWN_PAYLOAD data

Specified by:: memberDisappeared in interface MembershipListener
Overrides:: memberDisappeared in class ChannelInterceptorBase

Parameters:: member - Member
See Also:: Member.SHUTDOWN_PAYLOAD

viewChange

protected void viewChange(Member[] view)

Override to receive view changes.

Parameters:: view -

start

public void start(int svc)
           throws ChannelException

Description copied from class: ChannelInterceptorBase

Starts up the channel. This can be called multiple times for individual services to start The svc parameter can be the logical or value of any constants

Specified by:: start in interface ChannelInterceptor
Overrides:: start in class ChannelInterceptorBase

Parameters:: svc - int value of
DEFAULT - will start all services
MBR_RX_SEQ - starts the membership receiver
MBR_TX_SEQ - starts the membership broadcaster
SND_TX_SEQ - starts the replication transmitter
SND_RX_SEQ - starts the replication receiver
Throws:: ChannelException - if a startup error occurs or the service is already started.
See Also:: Channel

stop

public void stop(int svc)
          throws ChannelException