Nabble - java.net - Grizzly

Re: handling SelectionKey.OP_ACCEPT without invoking a chain of filters added in Transport.

2009-12-18T13:43:20Z

Hi Oleksiy Stashok:

    To test whether filterChain.setInterested(IOEvent.SERVER_ACCEPT, false) can stop invoking filters at IOEvent.SERVER_ACCEPT).   I modified two files ( see below).

    test shows the handleAccept method in both EchoFilter and TransportFilter are executed , regardless of boolean value assigned to isInterested
        filterChain.setInterested(IOEvent.SERVER_ACCEPT, boolean: isInterested );

   I also tested filterChain.setInterested(IOEVent.READ, boolean:isInterested) by adding a line in EchoServer.java as filterChain.setInterested(IOEvent.READ, false), handleRead method in both EchoFilter and TransportFilter are executed , regardless of boolean value assigned to isInterested.

Below are code snippets for this test:

In com.sun.grizzly.sample.echo. EchoSever.java , I added two lines to get a filterChain a

transport.getFilterChain().add(new TransportFilter());

transport.getFilterChain().add(new EchoFilter());

// below two lines for no executions on filters ( EchoFilter and Trasnportfilter)

// when IOEvent .SEVER_ACCEPT occurs

FilterChain filterChain = transport.getFilterChain();

filterChain.setInterested(IOEvent.SERVER_ACCEPT, false);

In com.su.grizzly.sample.echo.EchoFilter.java:

Adding one method handleAccept (FilterChainContext ctx, NextAction nextAction)

public NextAction handleAccept(FilterChainContext ctx, NextAction nextAction)

throws IOException {

System.out.println ( “barking up the wrong tree”);

return nextAction;

}

Ming Qin
Cell Phone 858-353-2839

--- On Thu, 12/17/09, Oleksiy Stashok <Oleksiy.Stashok@...> wrote:

From: Oleksiy Stashok <Oleksiy.Stashok@...>
Subject: Re: handling SelectionKey.OP_ACCEPT without invoking a chain of filters added in Transport.
To: dev@...
Date: Thursday, December 17, 2009, 1:58 AM

Hi Ming Qin,

please try
filterChain.setInterested(IOEvent.SERVER_ACCEPT, false);

WBR,
Alexey.

On Dec 17, 2009, at 8:37 , ming qin wrote:

For Grizzly 2.0.0-M3, after SelectionKey.OP_ACCEPT ‘s firing IOEvent.SERVER_ACCEPT , can SelectorRunner not to invoke a chain of filters being defined in Transport?

Transport is added with a series filters as a chain of filters. when client requests a connection with server, the server’s SelectorRunner invokes fire(key, IOEvent.SERVER_ACCEPT), as well as those filters being added in Transport are invoked.

By avoiding invoking those filters in transport for SelectionKey.OP_ACCEPT,
SelectionKey.OP_ACCEPT related ready-operation should run on a fast track, if there are no datai is supposed to pass into those filters.

Ming Qin
Cell Phone 858-353-2839

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