Examples of IoFilter

org.apache.mina.api.IoFilter
ache.org">Apache MINA Project
org.apache.mina.common.IoFilter
A filter which intercepts {@link IoHandler} events like Servletfilters. Filters can be used for these purposes:
- Event logging,
- Performance measurement,
- Authorization,
- Overload control,
- Message transformation (e.g. encryption and decryption, ...),
- and many more.
Please NEVER implement your filters to wrap {@link IoSession}s. Users can cache the reference to the session, which might malfunction if any filters are added or removed later.
The Life Cycle
{@link IoFilter}s are activated only when they are inside {@link IoFilterChain}.
When you add an {@link IoFilter} to an {@link IoFilterChain}:
1. {@link #init()} is invoked by {@link ReferenceCountingIoFilter} ifthe filter is added at the first time.
2. {@link #onPreAdd(IoFilterChain,String,NextFilter)} is invoked to notifythat the filter will be added to the chain.
3. The filter is added to the chain, and all events and I/O requests pass through the filter from now.
4. {@link #onPostAdd(IoFilterChain,String,NextFilter)} is invoked to notifythat the filter is added to the chain.
5. The filter is removed from the chain if {@link #onPostAdd(IoFilterChain,String,org.apache.mina.common.IoFilter.NextFilter)}threw an exception. {@link #destroy()} is also invoked by{@link ReferenceCountingIoFilter} if the filter is the last filter whichwas added to {@link IoFilterChain}s.
When you remove an {@link IoFilter} from an {@link IoFilterChain}:
1. {@link #onPreRemove(IoFilterChain,String,NextFilter)} is invoked tonotify that the filter will be removed from the chain.
2. The filter is removed from the chain, and any events and I/O requests don't pass through the filter from now.
3. {@link #onPostRemove(IoFilterChain,String,NextFilter)} is invoked tonotify that the filter is removed from the chain.
4. {@link #destroy()} is invoked by {@link ReferenceCountingIoFilter} ifthe removed filter was the last one.
@author The Apache Directory Project (mina-dev@directory.apache.org) @version $Rev: 555855 $, $Date: 2007-07-13 12:19:00 +0900 (Fri, 13 Jul 2007) $ @see IoFilterAdapter
org.apache.mina.core.filterchain.IoFilter
A filter which intercepts {@link IoHandler} events like Servletfilters. Filters can be used for these purposes:
- Event logging,
- Performance measurement,
- Authorization,
- Overload control,
- Message transformation (e.g. encryption and decryption, ...),
- and many more.
Please NEVER implement your filters to wrap {@link IoSession}s. Users can cache the reference to the session, which might malfunction if any filters are added or removed later.
The Life Cycle
{@link IoFilter}s are activated only when they are inside {@link IoFilterChain}.
When you add an {@link IoFilter} to an {@link IoFilterChain}:
1. {@link #init()} is invoked by {@link ReferenceCountingFilter} ifthe filter is added at the first time.
2. {@link #onPreAdd(IoFilterChain,String,NextFilter)} is invoked to notifythat the filter will be added to the chain.
3. The filter is added to the chain, and all events and I/O requests pass through the filter from now.
4. {@link #onPostAdd(IoFilterChain,String,NextFilter)} is invoked to notifythat the filter is added to the chain.
5. The filter is removed from the chain if {@link #onPostAdd(IoFilterChain,String,org.apache.mina.core.filterchain.IoFilter.NextFilter)}threw an exception. {@link #destroy()} is also invoked by{@link ReferenceCountingFilter} if the filter is the last filter whichwas added to {@link IoFilterChain}s.
When you remove an {@link IoFilter} from an {@link IoFilterChain}:
1. {@link #onPreRemove(IoFilterChain,String,NextFilter)} is invoked tonotify that the filter will be removed from the chain.
2. The filter is removed from the chain, and any events and I/O requests don't pass through the filter from now.
3. {@link #onPostRemove(IoFilterChain,String,NextFilter)} is invoked tonotify that the filter is removed from the chain.
4. {@link #destroy()} is invoked by {@link ReferenceCountingFilter} ifthe removed filter was the last one.
@author The Apache MINA Project (dev@mina.apache.org) @version $Rev: 591770 $, $Date: 2007-11-04 13:22:44 +0100 (Sun, 04 Nov 2007) $ @see IoFilterAdapter
org.apache.mina.io.IoFilter
A filter which intercepts {@link IoHandler} events like Servlet filters.Filters can be used for these purposes:
- Event logging,
- Performance measurement,
- Data transformation (e.g. SSL support),
- Firewalling,
- and many more.
Please refer to BlacklistFilter example.
Please NEVER implement your filters to wrap {@link IoSession}s. Users can cache the reference to the session, which might malfunction if any filters are added or removed later. @author The Apache Directory Project (dev@directory.apache.org) @version $Rev: 357871 $, $Date: 2005-12-20 10:56:40 +0900 (Tue, 20 Dec 2005) $ @see IoFilterAdapter

Examples of org.apache.mina.io.IoFilter

        LOG.info("Configuring " + ioWorkerCount + " IO workers");
        IoThreadPoolFilter threadPoolFilter = (IoThreadPoolFilter) acceptor.getFilterChain().getChild("threadPool");
        threadPoolFilter.setMaximumPoolSize(ioWorkerCount);
        if (isLoggingTraffic) {
            LOG.info("Configuring traffic logging filter");
            IoFilter filter = new IoLoggingFilter();
            acceptor.getFilterChain().addLast("LoggingFilter", filter);
        }


        //acceptor.getFilterChain().addLast("ThreadPoolFilter",
        //new IoThreadPoolFilter("NIO-ThreadPool"));

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Examples of IoFilter

The Life Cycle

The Life Cycle

Examples of org.apache.mina.io.IoFilter