ClusterListener (Apache Tomcat 7.0.109 API Documentation)

java.lang.Object
- org.apache.catalina.ha.ClusterListener

All Implemented Interfaces:

ChannelListener

Direct Known Subclasses:

ClusterSessionListener, FarmWarDeployer, JvmRouteSessionIDBinderListener
```
public abstract class ClusterListener
extends Object
implements ChannelListener
```
Receive SessionID cluster change from other backup node after primary session node is failed.

Author:

Peter Rossbach

Field Summary

Fields
Modifier and Type Field and Description

protected CatalinaCluster cluster
The string manager for this package.

Fields
Modifier and Type	Field and Description
`protected CatalinaCluster`	`cluster` The string manager for this package.

Constructor Summary

Constructors
Constructor and Description

ClusterListener()

Constructors
Constructor and Description
`ClusterListener()`

Method Summary

Methods
Modifier and Type	Method and Description
`abstract boolean`	`accept(ClusterMessage msg)` Accept only SessionIDMessages
`boolean`	`accept(Serializable msg, Member member)` Invoked by the channel to determine if the listener will process this message or not.
`CatalinaCluster`	`getCluster()`
`abstract void`	`messageReceived(ClusterMessage msg)` Callback from the cluster, when a message is received, The cluster will broadcast it invoking the messageReceived on the receiver.
`void`	`messageReceived(Serializable msg, Member member)` Receive a message from the channel
`void`	`setCluster(CatalinaCluster cluster)`

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

Methods inherited from interface org.apache.catalina.tribes.ChannelListener
equals, hashCode

- Field Detail
  - cluster
```
protected CatalinaCluster cluster
```
    The string manager for this package.
- Constructor Detail
  - ClusterListener
```
public ClusterListener()
```
- Method Detail
  - getCluster
```
public CatalinaCluster getCluster()
```
  - setCluster
```
public void setCluster(CatalinaCluster cluster)
```
  - messageReceived
```
public final void messageReceived(Serializable msg,
                   Member member)
```
    Description copied from interface: ChannelListener
    
    Receive a message from the channel
    
    Specified by:
    
    messageReceived in interface ChannelListener
    
    Parameters:
    msg - Serializable
    member - - the source of the message
  - accept
```
public final boolean accept(Serializable msg,
             Member member)
```
    Description copied from interface: ChannelListener
    
    Invoked by the channel to determine if the listener will process this message or not.
    
    Specified by:
    
    accept in interface ChannelListener
    
    Parameters:
    msg - Serializable
    member - Member
    
    Returns:
    boolean
  - messageReceived
```
public abstract void messageReceived(ClusterMessage msg)
```
    Callback from the cluster, when a message is received, The cluster will broadcast it invoking the messageReceived on the receiver.
    
    Parameters:
    msg - ClusterMessage - the message received from the cluster
  - accept
```
public abstract boolean accept(ClusterMessage msg)
```
    Accept only SessionIDMessages
    
    Parameters:
    msg - ClusterMessage
    
    Returns:
    boolean - returns true to indicate that messageReceived should be invoked. If false is returned, the messageReceived method will not be invoked.

Class ClusterListener

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface org.apache.catalina.tribes.ChannelListener

Field Detail

cluster

Constructor Detail

ClusterListener

Method Detail

getCluster

setCluster

messageReceived

accept

messageReceived

accept