public synchronized void stopListener() {
if (!listenerStarted) return;
// shutdown listening for new switches
try {
listenerIOLoop.shutdown();
listenSock.socket().close();
listenSock.close();
} catch (IOException e) {
log.error("Failure shutting down listening socket", e);
} finally {
listenerStarted = false;
}
}
public void shutDown() throws IOException {
shuttingDown = true;
livenessTimer.cancel();
stopListener();
// close the switch connections
for (Iterator<Entry<Long, IOFSwitchExt>> it = activeSwitches.entrySet().iterator();
it.hasNext(); ) {
Entry<Long, IOFSwitchExt> entry = it.next();
entry.getValue().getSocketChannel().socket().close();
it.remove();
}
// shutdown the connected switch select loops
for (IOLoop sl : switchIOLoops) {
sl.shutdown();
}
es.shutdown();
initializerExecutorService.shutdownNow();
updatesThread.interrupt();
log.info("Beacon Core Shutdown");
}
public synchronized void startListener() {
if (listenerStarted) return;
try {
listenSock = ServerSocketChannel.open();
listenSock.socket().setReceiveBufferSize(512 * 1024);
listenSock.configureBlocking(false);
if (listenAddress != null) {
listenSock
.socket()
.bind(
new java.net.InetSocketAddress(
InetAddress.getByAddress(IPv4.toIPv4AddressBytes(listenAddress)), listenPort));
} else {
listenSock.socket().bind(new java.net.InetSocketAddress(listenPort));
}
listenSock.socket().setReuseAddress(true);
listenerIOLoop = new IOLoop(this, -1);
// register this connection for accepting
listenerIOLoop.register(listenSock, SelectionKey.OP_ACCEPT, listenSock);
} catch (IOException e) {
log.error("Failure opening listening socket", e);
System.exit(-1);
}
log.info(
"Controller listening on {}:{}", listenAddress == null ? "*" : listenAddress, listenPort);
es.execute(
new Runnable() {
public void run() {
// Start the listen loop
try {
listenerIOLoop.doLoop();
} catch (Exception e) {
log.error("Exception during accept loop, terminating thread", e);
}
}
});
listenerStarted = true;
}
protected void handleListenEvent(SelectionKey key, ServerSocketChannel ssc) throws IOException {
SocketChannel sock = listenSock.accept();
log.info("Switch connected from {}", sock.toString());
sock.socket().setTcpNoDelay(this.noDelay);
sock.configureBlocking(false);
sock.socket().setSendBufferSize(1024 * 1024);
OFSwitchImpl sw = new OFSwitchImpl();
// Try to even the # of switches per thread
// TODO something more intelligent here based on load
IOLoop sl = null;
for (IOLoop loop : switchIOLoops) {
if (sl == null || loop.getStreams().size() < sl.getStreams().size()) sl = loop;
}
// register initially with no ops because we need the key to init the stream
SelectionKey switchKey = sl.registerBlocking(sock, 0, sw);
OFStream stream = new OFStream(sock, factory, switchKey, sl);
stream.setImmediate(this.immediate);
sw.setInputStream(stream);
sw.setOutputStream(stream);
sw.setSocketChannel(sock);
sw.setBeaconProvider(this);
sw.transitionToState(OFSwitchState.HELLO_SENT);
addSwitch(sw);
// Send HELLO
stream.write(factory.getMessage(OFType.HELLO));
// register for read
switchKey.interestOps(SelectionKey.OP_READ);
sl.addStream(stream);
log.info("Added switch {} to IOLoop {}", sw, sl);
sl.wakeup();
}
