org.directwebremoting.impl
Class ThreadDroppingServerLoadMonitor

java.lang.Object
  extended by org.directwebremoting.impl.AbstractServerLoadMonitor
      extended by org.directwebremoting.impl.ThreadDroppingServerLoadMonitor
All Implemented Interfaces:
ServerLoadMonitor, UninitializingBean

public class ThreadDroppingServerLoadMonitor
extends AbstractServerLoadMonitor

A smart implementation of ServerLoadMonitor, customized for Jetty. The ThreadDroppingServerLoadMonitor attempts to keep the hit rate down by increasing the disconnected time as usage increases.

Author:
Joe Walker [joe at getahead dot org]

Constructor Summary
ThreadDroppingServerLoadMonitor()
           
 
Method Summary
 long getConnectedTime()
          What's the longest time that we should wait before asking the client to reconnect?
 int getDisconnectedTime()
          Controller for poll times.
 void setMaxHitsPerSecond(int maxHitsPerSecond)
           
 boolean supportsStreaming()
          If the server is not going to be streaming then we need to tell browsers to just use XHR rather than anything fancier.
 void threadWaitEnding(WaitController controller)
          A thread has just ended a wait period.
 void threadWaitStarting(WaitController controller)
          A thread is about to begin a wait period.
 
Methods inherited from class org.directwebremoting.impl.AbstractServerLoadMonitor
contextDestroyed, servletDestroyed, shutdownRandomWaitControllers
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ThreadDroppingServerLoadMonitor

public ThreadDroppingServerLoadMonitor()
Method Detail

supportsStreaming

public boolean supportsStreaming()
Description copied from interface: ServerLoadMonitor
If the server is not going to be streaming then we need to tell browsers to just use XHR rather than anything fancier.

Returns:
true if the server will be supporting streaming

getConnectedTime

public long getConnectedTime()
Description copied from interface: ServerLoadMonitor
What's the longest time that we should wait before asking the client to reconnect?

Returns:
The maximum client connected time

getDisconnectedTime

public int getDisconnectedTime()
Description copied from interface: ServerLoadMonitor
Controller for poll times.

TODO: We should probably get rid of this and leave it to BasePollHandler?

Returns:
How long should this client wait until it next polls?

threadWaitStarting

public void threadWaitStarting(WaitController controller)
Description copied from interface: ServerLoadMonitor
A thread is about to begin a wait period. This can be used by implementations to dynamically adjust the poll timings.

Specified by:
threadWaitStarting in interface ServerLoadMonitor
Overrides:
threadWaitStarting in class AbstractServerLoadMonitor
Parameters:
controller - An object that we can use to control the wait

threadWaitEnding

public void threadWaitEnding(WaitController controller)
Description copied from interface: ServerLoadMonitor
A thread has just ended a wait period. This can be used by implementations to dynamically adjust the poll timings.

Specified by:
threadWaitEnding in interface ServerLoadMonitor
Overrides:
threadWaitEnding in class AbstractServerLoadMonitor
Parameters:
controller - An object that we can use to control the wait

setMaxHitsPerSecond

public void setMaxHitsPerSecond(int maxHitsPerSecond)
Parameters:
maxHitsPerSecond - the maxHitsPerSecond to set

Copyright 2008