On Friday 07 May 2004 07:33, Scott Brickner wrote:
If the QueueComponents are ultra-dumb, then I assume that they don't need to
be (are not?) AF4 aware.
So I would then suggest an "CommunicationRouter" component that;
1. Smart enough.
2. Manages the LifeCycle of the Dumb components.
3. Has a dependee in form of the NIO component.
CommunicationRouter would have in the config something like;
<queues>
<queue class="org.hedhman.niclas.queues.FtpQueue" >
<port>21</port>
<enabled>true</enabled>
</queue>
<queue class="org.hedhman.niclas.queues.SshQueue" >
<port>443</port>
<enabled>true</enabled>
</queue>
<queue class="org.hedhman.niclas.queues.HttpQueue" >
<port>80</port>
<enabled>true</enabled>
</queue>
<queue class="org.hedhman.niclas.queues.HttpQueue" >
<port>8080</port>
<enabled>true</enabled>
</queue>
</queues>
IMHO, Making the Queues slightly 'smarter' so that they can register
themselves with the NIOComponent seems like a reasonable trade-off;
public class FtpQueue
implements Serviceable, Disposable, CommunicationQueue
{
private ConnectionManager m_ConnectionManager;
/** @avalon.dependency type="org.hedhman.niclas.nio.ConnectionManager"
key="ConnMan"
*/
public void service( ServiceManager man ) throws ServiceException
{
m_ConnectionManager = (ConnectionManager) man.lookup( "ConnMan" );
m_ConnectionManager.registerCommunicationQueue( this );
}
public void configure( Configuration conf )
throws ConfigurationException
{
// Read in stuff like Port, Enabled and other config info.
}
public void dispose()
{
m_ConnectionManager.unregisterCommunicationQueue( this );
}
// CommunicationQueue methods
public int getPort()
{
}
public boolean isEnabled()
{
}
// and so on
public void connectionEstablished( CommunicationEvent event )
{
// whatever
}
public void connectionLost( CommunicationEvent event )
{
// whatever
}
}
IMHO, this gives you a more powerful and less coupled system.
Cheers
Niclas
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