private synchronized void saveHOMStates() {
ch1 = new Channel[rfCavs.size()];
ch2 = new Channel[rfCavs.size()];
hom0States = new int[rfCavs.size()];
hom1States = new int[rfCavs.size()];
ChannelFactory cf = ChannelFactory.defaultFactory();
Iterator<SCLCavity> it = rfCavs.iterator();
int i = 0;
while (it.hasNext()) {
// get HOM monitor states
String cavName = ((AcceleratorNode) it.next()).getId();
String chName0 = cavName.replaceAll("RF:Cav", "LLRF:HPM").concat(":HBADC0_Ctl");
String chName1 = cavName.replaceAll("RF:Cav", "LLRF:HPM").concat(":HBADC1_Ctl");
ch1[i] = cf.getChannel(chName0);
ch2[i] = cf.getChannel(chName1);
try {
hom0States[i] = Integer.parseInt(ch1[i].getValueRecord().stringValue());
hom1States[i] = Integer.parseInt(ch2[i].getValueRecord().stringValue());
} catch (ConnectionException ce) {
System.out.println("Cannot connect to a channel!");
} catch (GetException ge) {
System.out.println("Cannot get a channel value!");
}
i++;
}
finished1 = true;
this.notify();
}
/** set a new channel whose limits we wish to monitor */
public void setChannel(final Channel channel) {
synchronized (this) {
if (_lowerChannel != null) {
_lowerChannel.removeConnectionListener(this);
if (_lowerMonitor != null) {
_lowerMonitor.clear();
_lowerMonitor = null;
}
}
final String lowerLimitPV = channel.channelName() + ".LOPR";
_lowerChannel = ChannelFactory.defaultFactory().getChannel(lowerLimitPV);
_lowerChannel.addConnectionListener(this);
_lowerChannel.requestConnection();
if (_upperChannel != null) {
_upperChannel.removeConnectionListener(this);
if (_upperMonitor != null) {
_upperMonitor.clear();
_upperMonitor = null;
}
}
final String upperLimitPV = channel.channelName() + ".HOPR";
_upperChannel = ChannelFactory.defaultFactory().getChannel(upperLimitPV);
_upperChannel.addConnectionListener(this);
_upperChannel.requestConnection();
}
}
private void onMsgChannelOpen(SshMsgChannelOpen msg) throws IOException {
synchronized (activeChannels) {
log.info("Request for " + msg.getChannelType() + " channel recieved");
// Try to get the channel implementation from the allowed channels
ChannelFactory cf = (ChannelFactory) allowedChannels.get(msg.getChannelType());
if (cf == null) {
sendChannelOpenFailure(
msg.getSenderChannelId(),
SshMsgChannelOpenFailure.SSH_OPEN_CONNECT_FAILED,
"The channel type is not supported",
"");
log.info("Request for channel type " + msg.getChannelType() + " refused");
return;
}
try {
log.info("Creating channel " + msg.getChannelType());
Channel channel = cf.createChannel(msg.getChannelType(), msg.getChannelData());
// Initialize the channel
log.info("Initiating channel");
Long channelId = getChannelId();
channel.init(
this,
channelId.longValue(),
msg.getSenderChannelId(),
msg.getInitialWindowSize(),
msg.getMaximumPacketSize());
activeChannels.put(channelId, channel);
log.info("Sending channel open confirmation");
// Send the confirmation message
sendChannelOpenConfirmation(channel);
// Open the channel for real
channel.open();
} catch (InvalidChannelException ice) {
sendChannelOpenFailure(
msg.getSenderChannelId(),
SshMsgChannelOpenFailure.SSH_OPEN_CONNECT_FAILED,
ice.getMessage(),
"");
}
}
}
private static final void unrefChannelFactory() {
synchronized (channelFactoryRefs) {
if (channelFactoryRefs.decrementAndGet() == 0) {
channelFactory.releaseExternalResources();
channelFactory = null;
}
}
}
public void stop() {
try {
myScheduler.shutdown();
myBuildsExecutor.shutdown();
final ChannelGroupFuture closeFuture = myAllOpenChannels.close();
closeFuture.awaitUninterruptibly();
} finally {
myChannelFactory.releaseExternalResources();
}
}
protected <C extends Channel> C createChannel(ChannelFactory<C> channelFactory, String clientId) {
C channel = null;
if (clientId != null) {
channel = getChannel(channelFactory, clientId);
if (channel != null) return channel;
}
String clientType = GraniteContext.getCurrentInstance().getClientType();
channel = channelFactory.newChannel(UUIDUtil.randomUUID(), clientType);
TimeChannel<C> timeChannel = new TimeChannel<C>(channel);
for (int i = 0; channels.putIfAbsent(channel.getId(), timeChannel) != null; i++) {
if (i >= 10)
throw new RuntimeException("Could not find random new clientId after 10 iterations");
channel.destroy(false);
channel = channelFactory.newChannel(UUIDUtil.randomUUID(), clientType);
timeChannel = new TimeChannel<C>(channel);
}
String channelId = channel.getId();
// Save channel id in distributed data (clustering).
try {
DistributedData gdd = graniteConfig.getDistributedDataFactory().getInstance();
if (gdd != null) {
log.debug("Saving channel id in distributed data: %s", channelId);
gdd.addChannelId(channelId, channelFactory.getClass().getName(), clientType);
}
} catch (Exception e) {
log.error(e, "Could not add channel id in distributed data: %s", channelId);
}
// Initialize timer task.
access(channelId);
return channel;
}
@SuppressWarnings("unchecked")
public <C extends Channel> C getChannel(ChannelFactory<C> channelFactory, String clientId) {
if (clientId == null) return null;
TimeChannel<C> timeChannel = (TimeChannel<C>) channels.get(clientId);
if (timeChannel == null) {
// Look for existing channel id/subscriptions in distributed data (clustering).
log.debug("Lookup channel %s in distributed data", clientId);
try {
DistributedData gdd = graniteConfig.getDistributedDataFactory().getInstance();
if (gdd != null && gdd.hasChannelId(clientId)) {
log.debug("Found channel id in distributed data: %s", clientId);
String channelFactoryClassName = gdd.getChannelFactoryClassName(clientId);
String clientType = gdd.getChannelClientType(clientId);
channelFactory =
(ChannelFactory<C>)
TypeUtil.newInstance(
channelFactoryClassName, new Class<?>[] {Gravity.class}, new Object[] {this});
C channel = channelFactory.newChannel(clientId, clientType);
timeChannel = new TimeChannel<C>(channel);
if (channels.putIfAbsent(clientId, timeChannel) == null) {
for (CommandMessage subscription : gdd.getSubscriptions(clientId)) {
log.debug("Resubscribing channel: %s - %s", clientId, subscription);
handleSubscribeMessage(channelFactory, subscription, false);
}
access(clientId);
}
}
} catch (Exception e) {
log.error(
e, "Could not recreate channel/subscriptions from distributed data: %s", clientId);
}
}
return (timeChannel != null ? timeChannel.getChannel() : null);
}
@Override
public void close() {
allChannels.close().awaitUninterruptibly();
channelFactory.releaseExternalResources();
}
/**
* Start a HyperGateClient
*
* <p>for that case use
*
* @throws Exception
*/
@Override
public void start() throws Exception {
if (this.running) {
throw new InstantiationException("HyperGate client " + this.getName() + "is running");
}
// Configure the client.
// TODO make it more robust & speedy implements Kryo serializer
this.channelFactory =
new NioClientSocketChannelFactory(
// TODO implement other executors
Executors.newCachedThreadPool(), Executors.newCachedThreadPool());
this.clientBootstrap = new ClientBootstrap(channelFactory);
ChannelPipelineFactory channelPipelineFactory =
new ChannelPipelineFactory() {
public ChannelPipeline getPipeline() throws Exception {
return Channels.pipeline(
// TODO make Encoder & Decoder - like a Strategy Pattern, and changeable via
// external settings
// new KryoObjectEncoder(),
// new
// KryoObjectDecoder(ClassResolvers.cacheDisabled(getClass().getClassLoader()))
// TODO #6
new ObjectEncoder(),
new ObjectDecoder(ClassResolvers.cacheDisabled(getClass().getClassLoader())),
new SimpleChannelUpstreamHandler() {
@Override
public void handleUpstream(ChannelHandlerContext ctx, ChannelEvent e)
throws Exception {
if (e instanceof ChannelStateEvent
&& ((ChannelStateEvent) e).getState() != ChannelState.INTEREST_OPS) {
LOG.info(e.toString());
}
super.handleUpstream(ctx, e);
}
@Override
public void channelConnected(ChannelHandlerContext ctx, ChannelStateEvent event) {
channel = event.getChannel();
// Send the first message
// channel.write(firstMessage);
}
@Override
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) {
// Get
serverListener(e.getMessage());
ctx.sendUpstream(e);
// e.getChannel().write(e.getStatus());
// e.getChannel().close();
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) {
LOG.warn("Unexpected exception from downstream.", e.getCause());
e.getChannel().close();
}
});
}
};
// Set up the pipeline factory.
this.clientBootstrap.setPipelineFactory(channelPipelineFactory);
// Start the connection attempt.
// ChannelFuture channelFuture = this.clientBootstrap.connect(new InetSocketAddress(host,
// setPort));
LOG.debug("CLIENT GOING TO CONNECT - host:" + host + " post:" + port);
this.channelFuture = this.clientBootstrap.connect(new InetSocketAddress(host, port));
// INFO
// correct shut down a client
// see http://netty.io/3.6/guide/#start.12 - 9. Shutting Down Your Application
// http://stackoverflow.com/questions/10911988/shutting-down-netty-server-when-client-connections-are-open
// Netty Server Shutdown
//
// Close server channel
// Shutdown boss and worker executor
// Release server bootstrap resource
// Example code
//
// ChannelFuture cf = serverChannel.close();
// cf.awaitUninterruptibly();
// bossExecutor.shutdown();
// workerExecutor.shutdown();
// thriftServer.releaseExternalResources();
// TODO Need to repair it
boolean goAway = false;
long countGoAway = 0;
final long stepGoAway = 50; // ms
LOG.warn("Warming up 0.6.0-SNAPSHOT ...");
while (goAway == false | countGoAway < (SERVER_CONNECTION_TIMEOUT / stepGoAway)) {
Thread.sleep(stepGoAway);
if (!channelFuture.isSuccess()) {
this.running = false;
goAway = true;
} else {
this.running = true;
goAway = true;
countGoAway = (SERVER_CONNECTION_TIMEOUT / stepGoAway) + 10;
}
countGoAway++;
LOG.warn(
"Count down for connection tomeout:"
+ countGoAway * stepGoAway
+ ":ms future:"
+ channelFuture.isSuccess()
+ " running:"
+ this.running);
}
if (this.running == false) {
LOG.warn("After ");
channelFuture.getCause().printStackTrace();
channelFactory.releaseExternalResources();
channelFuture = null;
}
}
private void shutDownChannelFuture(ChannelFuture channelFutureLocal) {
channelFutureLocal.getCause().printStackTrace();
channelFactory.releaseExternalResources();
channelFutureLocal = null;
running = false;
}
