Examples with ObjectReader org.apache.catalina.tribes.io.ObjectReader used on opensource projects

Example 6 with ObjectReader

use of org.apache.catalina.tribes.io.ObjectReader in project tomcat by apache.

the class NioReceiver method listen.

/**
     * Get data from channel and store in byte array
     * send it to cluster
     * @throws IOException IO error
     */
protected void listen() throws Exception {
    if (doListen()) {
        log.warn(sm.getString("nioReceiver.alreadyStarted"));
        return;
    }
    setListen(true);
    // Avoid NPEs if selector is set to null on stop.
    Selector selector = this.selector.get();
    if (selector != null && datagramChannel != null) {
        //max size for a datagram packet
        ObjectReader oreader = new ObjectReader(MAX_UDP_SIZE);
        registerChannel(selector, datagramChannel, SelectionKey.OP_READ, oreader);
    }
    while (doListen() && selector != null) {
        // selected set contains keys of the ready channels
        try {
            events();
            socketTimeouts();
            int n = selector.select(getSelectorTimeout());
            if (n == 0) {
                // nothing to do
                continue;
            }
            // get an iterator over the set of selected keys
            Iterator<SelectionKey> it = selector.selectedKeys().iterator();
            // look at each key in the selected set
            while (it != null && it.hasNext()) {
                SelectionKey key = it.next();
                // Is a new connection coming in?
                if (key.isAcceptable()) {
                    ServerSocketChannel server = (ServerSocketChannel) key.channel();
                    SocketChannel channel = server.accept();
                    channel.socket().setReceiveBufferSize(getTxBufSize());
                    channel.socket().setSendBufferSize(getTxBufSize());
                    channel.socket().setTcpNoDelay(getTcpNoDelay());
                    channel.socket().setKeepAlive(getSoKeepAlive());
                    channel.socket().setOOBInline(getOoBInline());
                    channel.socket().setReuseAddress(getSoReuseAddress());
                    channel.socket().setSoLinger(getSoLingerOn(), getSoLingerTime());
                    channel.socket().setSoTimeout(getTimeout());
                    Object attach = new ObjectReader(channel);
                    registerChannel(selector, channel, SelectionKey.OP_READ, attach);
                }
                // is there data to read on this channel?
                if (key.isReadable()) {
                    readDataFromSocket(key);
                } else {
                    key.interestOps(key.interestOps() & (~SelectionKey.OP_WRITE));
                }
                // remove key from selected set, it's been handled
                it.remove();
            }
        } catch (java.nio.channels.ClosedSelectorException cse) {
        // ignore is normal at shutdown or stop listen socket
        } catch (java.nio.channels.CancelledKeyException nx) {
            log.warn(sm.getString("nioReceiver.clientDisconnect"));
        } catch (Throwable t) {
            ExceptionUtils.handleThrowable(t);
            log.error(sm.getString("nioReceiver.requestError"), t);
        }
    }
    serverChannel.close();
    if (datagramChannel != null) {
        try {
            datagramChannel.close();
        } catch (Exception iox) {
            if (log.isDebugEnabled())
                log.debug("Unable to close datagram channel.", iox);
        }
        datagramChannel = null;
    }
    closeSelector();
}

Example 7 with ObjectReader

use of org.apache.catalina.tribes.io.ObjectReader in project tomcat by apache.

the class NioReplicationTask method serviceChannel.

/**
     * Called to initiate a unit of work by this worker thread
     * on the provided SelectionKey object.  This method is
     * synchronized, as is the run() method, so only one key
     * can be serviced at a given time.
     * Before waking the worker thread, and before returning
     * to the main selection loop, this key's interest set is
     * updated to remove OP_READ.  This will cause the selector
     * to ignore read-readiness for this channel while the
     * worker thread is servicing it.
     * @param key The key to process
     */
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));
}