Examples of org.apache.catalina.tribes.io.ObjectReader

org.apache.catalina.tribes.io.ObjectReader
The object reader object is an object used in conjunction with java.nio TCP messages. This object stores the message bytes in a XByteBuffer until a full package has been received. When a full package has been received, the append method will call messageDataReceived on the callback object associated with this object reader.
This object uses an XByteBuffer which is an extendable object buffer that also allows for message encoding and decoding. @author Filip Hanik @version $Revision: 377484 $, $Date: 2006-02-13 15:00:05 -0600 (Mon, 13 Feb 2006) $

        }
        if ( log.isTraceEnabled() )
            log.trace("Servicing key:"+key);


        try {
            ObjectReader reader = (ObjectReader)key.attachment();
            if ( reader == null ) {
                if ( log.isTraceEnabled() )
                    log.trace("No object reader, cancelling:"+key);
                cancelKey(key);
            } else {

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     * to ignore read-readiness for this channel while the
     * worker thread is servicing it.
     */
    public synchronized void serviceChannel (SelectionKey key) {
        if ( log.isTraceEnabled() ) log.trace("About to service key:"+key);
        ObjectReader reader = (ObjectReader)key.attachment();
        if ( reader != null ) reader.setLastAccess(System.currentTimeMillis());
        this.key = key;
        key.interestOps (key.interestOps() & (~SelectionKey.OP_READ));
        key.interestOps (key.interestOps() & (~SelectionKey.OP_WRITE));
    }

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    private void cancelKey(final SelectionKey key) {
        if ( log.isTraceEnabled() )
            log.trace("Adding key for cancel event:"+key);


        ObjectReader reader = (ObjectReader)key.attachment();
        if ( reader != null ) {
            reader.setCancelled(true);
            reader.finish();
        }
        Runnable cx = new Runnable() {
            @Override
            public void run() {
                if ( log.isTraceEnabled() )

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            events.clear();
        }
    }
    
    public static void cancelledKey(SelectionKey key) {
        ObjectReader reader = (ObjectReader)key.attachment();
        if ( reader != null ) {
            reader.setCancelled(true);
            reader.finish();
        }
        key.cancel(); 
        key.attach(null);
        try { ((SocketChannel)key.channel()).socket().close(); } catch (IOException e) { if (log.isDebugEnabled()) log.debug("", e); }
        try { key.channel().close(); } catch (IOException e) { if (log.isDebugEnabled()) log.debug("", e); }

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//                    }
//                }
//                else
                if ( key.interestOps() == 0 ) {
                    //check for keys that didn't make it in.
                    ObjectReader ka = (ObjectReader) key.attachment();
                    if ( ka != null ) {
                        long delta = now - ka.getLastAccess();
                        if (delta > (long) getTimeout() && (!ka.isAccessed())) {
                            log.warn("Channel key is registered, but has had no interest ops for the last "+getTimeout()+" ms. (cancelled:"+ka.isCancelled()+"):"+key+" last access:"+new java.sql.Timestamp(ka.getLastAccess()));
//                            System.out.println("Interest:"+key.interestOps());
//                            System.out.println("Ready Ops:"+key.readyOps());
//                            System.out.println("Valid:"+key.isValid());
                            ka.setLastAccess(now);
                            //key.interestOps(SelectionKey.OP_READ);
                        }//end if
                    } else {
                        cancelledKey(key);
                    }//end if

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                        channel.socket().setOOBInline(getOoBInline());
                        channel.socket().setReuseAddress(getSoReuseAddress());
                        channel.socket().setSoLinger(getSoLingerOn(),getSoLingerTime());
                        channel.socket().setTrafficClass(getSoTrafficClass());
                        channel.socket().setSoTimeout(getTimeout());
                        Object attach = new ObjectReader(channel);
                        registerChannel(selector,
                                        channel,
                                        SelectionKey.OP_READ,
                                        attach);
                    }

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            }
            if ( log.isTraceEnabled() ) 
                log.trace("Servicing key:"+key);


            try {
                ObjectReader reader = (ObjectReader)key.attachment();
                if ( reader == null ) {
                    if ( log.isTraceEnabled() ) 
                        log.trace("No object reader, cancelling:"+key);
                    cancelKey(key);
                } else {

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     * worker thread is servicing it.
     */
    public synchronized void serviceChannel (SelectionKey key) {
        if ( log.isTraceEnabled() ) 
            log.trace("About to service key:"+key);
        ObjectReader reader = (ObjectReader)key.attachment();
        if ( reader != null ) reader.setLastAccess(System.currentTimeMillis());
        this.key = key;
        key.interestOps (key.interestOps() & (~SelectionKey.OP_READ));
        key.interestOps (key.interestOps() & (~SelectionKey.OP_WRITE));
        this.notify();    // awaken the thread
    }

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    private void cancelKey(final SelectionKey key) {
        if ( log.isTraceEnabled() ) 
            log.trace("Adding key for cancel event:"+key);


        ObjectReader reader = (ObjectReader)key.attachment();
        if ( reader != null ) {
            reader.setCancelled(true);
            reader.finish();
        }
        Runnable cx = new Runnable() {
            public void run() {
                if ( log.isTraceEnabled() ) 
                    log.trace("Cancelling key:"+key);

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            events.clear();
        }
    }
    
    public static void cancelledKey(SelectionKey key) {
        ObjectReader reader = (ObjectReader)key.attachment();
        if ( reader != null ) {
            reader.setCancelled(true);
            reader.finish();
        }
        key.cancel(); 
        key.attach(null);
        try { ((SocketChannel)key.channel()).socket().close(); } catch (IOException e) { if (log.isDebugEnabled()) log.debug("", e); }
        try { key.channel().close(); } catch (IOException e) { if (log.isDebugEnabled()) log.debug("", e); }

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