public void startReceiving() {
final Channel channel = this.channelAssociation.getChannel();
channel.addCloseHandler(new ChannelCloseHandler());
channel.receiveMessage(this);
// listen to module availability/unavailability events
this.deploymentRepository.addListener(this);
// listen to new clusters (a.k.a groups) being started/stopped
this.clientMappingRegistryCollector.addListener(this);
// Send the cluster topology for existing clusters in the registry
// and for each of these clusters added ourselves as a listener for cluster
// topology changes (members added/removed events in the cluster)
final Collection<Registry<String, List<ClientMapping>>> clusters =
this.clientMappingRegistryCollector.getRegistries();
try {
this.sendNewClusterFormedMessage(clusters);
} catch (IOException ioe) {
// just log and don't throw an error
EjbLogger.ROOT_LOGGER.failedToSendClusterFormationMessageToClient(ioe, channel);
}
for (final Registry<String, List<ClientMapping>> cluster : clusters) {
// add the topology update listener
final ClusterTopologyUpdateListener clusterTopologyUpdateListener =
new ClusterTopologyUpdateListener(cluster, this);
cluster.addListener(clusterTopologyUpdateListener);
// keep track of this topology update listener so that we can unregister it when the channel
// is closed and
// we no longer are interested in the topology updates
this.clusterTopologyUpdateListeners.add(clusterTopologyUpdateListener);
}
}
@Override
public ProxyController serverCommunicationRegistered(
final String serverProcessName, final ManagementChannelHandler channelAssociation) {
if (shutdown || connectionFinished) {
throw HostControllerMessages.MESSAGES.hostAlreadyShutdown();
}
final String serverName = ManagedServer.getServerName(serverProcessName);
final ManagedServer server = servers.get(serverName);
if (server == null) {
ROOT_LOGGER.noServerAvailable(serverName);
return null;
}
try {
final TransactionalProtocolClient client = server.channelRegistered(channelAssociation);
final Channel channel = channelAssociation.getChannel();
channel.addCloseHandler(
new CloseHandler<Channel>() {
public void handleClose(final Channel closed, final IOException exception) {
final boolean shuttingDown = shutdown || connectionFinished;
// Unregister right away
if (server.callbackUnregistered(client, shuttingDown)) {
domainController.unregisterRunningServer(server.getServerName());
}
}
});
return server.getProxyController();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
/**
* Execute an operation and wait until the connection is closed. This is only useful for :reload
* and :shutdown operations.
*
* @param operation the operation to execute
* @return the operation result
* @throws IOException for any error
*/
public ModelNode executeAwaitConnectionClosed(final ModelNode operation) throws IOException {
final DomainTestClient client = internalGetOrCreateClient();
final Channel channel = client.getChannel();
final Connection ref = channel.getConnection();
ModelNode result = new ModelNode();
try {
result = client.execute(operation);
// IN case the operation wasn't successful, don't bother waiting
if (!"success".equals(result.get("outcome").asString())) {
return result;
}
} catch (Exception e) {
if (e instanceof IOException) {
final Throwable cause = e.getCause();
if (cause instanceof ExecutionException) {
// ignore, this might happen if the channel gets closed before we got the response
} else {
throw (IOException) e;
}
} else {
throw new RuntimeException(e);
}
}
try {
if (channel != null) {
// Wait for the channel to close
channel.awaitClosed();
}
// Wait for the connection to be closed
connection.awaitConnectionClosed(ref);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
return result;
}
@After
public void stopChannels() throws Exception {
for (final Channel channel : channels) {
channel.close();
}
futureConnection.get().close();
channelServer.close();
channelServer = null;
}
/**
* Create the protocol client to talk to the remote controller.
*
* @param channel the remoting channel
* @return the client
* @throws Exception
*/
TransactionalProtocolClient createClient(final Channel channel) {
channels.add(channel);
final ManagementChannelHandler channelAssociation =
new ManagementChannelHandler(channel, clientExecutor);
final TransactionalProtocolClient client =
TransactionalProtocolHandlers.createClient(channelAssociation);
channel.addCloseHandler(channelAssociation);
channel.receiveMessage(channelAssociation.getReceiver());
return client;
}
@Override
public void handleClose(final Channel closed, final IOException exception) {
if (CLIModelControllerClient.this.closed) {
return;
}
synchronized (lock) {
if (strategy != null) {
if (strategy != originalStrategy) {
new Exception("Channel close handler " + strategy + " " + originalStrategy)
.printStackTrace();
}
strategy = null;
closeHandler.handleClose();
}
channelAssociation.handleChannelClosed(closed, exception);
lock.notifyAll();
}
// Closing the strategy in this handler may result in race conditions
// with connection closing and then deadlocks in remoting
// it's safer to close the strategy from the connection close handler
closed
.getConnection()
.addCloseHandler(
new CloseHandler<Connection>() {
@Override
public void handleClose(Connection closed, IOException exception) {
StreamUtils.safeClose(originalStrategy);
}
});
}
@Override
public void handleMessage(final Channel channel, final MessageInputStream message) {
try {
ROOT_LOGGER.tracef("%s handling incoming data", this);
final DataInput input = new DataInputStream(message);
final ManagementProtocolHeader header = ManagementProtocolHeader.parse(input);
final byte type = header.getType();
if (type == ManagementProtocol.TYPE_PING) {
// Handle legacy ping/pong directly
ROOT_LOGGER.tracef("Received ping on %s", this);
handlePing(channel, header);
} else if (type == ManagementProtocol.TYPE_BYE_BYE) {
// Close the channel
ROOT_LOGGER.tracef("Received bye bye on %s, closing", this);
handleChannelReset(channel);
} else {
// Handle a message
handleMessage(channel, input, header);
}
message.close();
} catch (IOException e) {
handleError(channel, e);
} catch (Exception e) {
handleError(channel, new IOException(e));
} finally {
StreamUtils.safeClose(message);
ROOT_LOGGER.tracef("%s done handling incoming data", this);
}
final Channel.Receiver next = next();
if (next != null) {
channel.receiveMessage(next);
}
}
public static IoFuture<InitialHeader> getInitialHeader(final Channel channel) {
VersionedIoFuture<InitialHeader> future = new VersionedIoFuture<InitialHeader>();
channel.receiveMessage(new ClientVersionReceiver(future));
return future;
}
@Override
public void handleEnd(final Channel channel) {
try {
channel.close();
} catch (IOException e) {
ROOT_LOGGER.errorClosingChannel(e.getMessage());
}
}
@Override
protected ProxyController createProxyController(
final ModelController proxiedController, final PathAddress proxyNodeAddress) {
try {
channels = new RemoteChannelPairSetup();
channels.setupRemoting(
new ManagementChannelInitialization() {
@Override
public ManagementChannelHandler startReceiving(Channel channel) {
final ManagementChannelHandler support =
new ManagementChannelHandler(channel, channels.getExecutorService());
support.addHandlerFactory(
new TransactionalProtocolOperationHandler(proxiedController, support));
channel.addCloseHandler(
new CloseHandler<Channel>() {
@Override
public void handleClose(Channel closed, IOException exception) {
support.shutdownNow();
}
});
channel.receiveMessage(support.getReceiver());
return support;
}
});
channels.startClientConnetion();
} catch (Exception e) {
throw new RuntimeException(e);
}
final Channel clientChannel = channels.getClientChannel();
final ManagementChannelHandler support =
new ManagementChannelHandler(clientChannel, channels.getExecutorService());
final RemoteProxyController proxyController =
RemoteProxyController.create(
support, proxyNodeAddress, ProxyOperationAddressTranslator.SERVER);
clientChannel.addCloseHandler(
new CloseHandler<Channel>() {
@Override
public void handleClose(Channel closed, IOException exception) {
support.shutdownNow();
}
});
clientChannel.receiveMessage(support.getReceiver());
return proxyController;
}
@Override
public void handleError(final Channel channel, final IOException error) {
ROOT_LOGGER.tracef(error, "%s error handling incoming data", this);
try {
channel.close();
} catch (IOException e) {
ROOT_LOGGER.errorClosingChannel(e.getMessage());
}
}
@Override
public void handleError(Channel channel, IOException error) {
try {
channel.close();
} catch (IOException e) {
throw EjbLogger.ROOT_LOGGER.couldNotCloseChannel(e);
} finally {
this.cleanupOnChannelDown();
}
}
@Override
public void handleEnd(Channel channel) {
try {
channel.close();
} catch (IOException e) {
// ignore
} finally {
this.cleanupOnChannelDown();
}
}
/**
* Handle a simple ping request.
*
* @param channel the channel
* @param header the protocol header
* @throws IOException for any error
*/
protected static void handlePing(final Channel channel, final ManagementProtocolHeader header)
throws IOException {
final ManagementProtocolHeader response = new ManagementPongHeader(header.getVersion());
final MessageOutputStream output = channel.writeMessage();
try {
writeHeader(response, output);
output.close();
} finally {
StreamUtils.safeClose(output);
}
}
protected static void writeResponse(
final Channel channel, final ManagementRequestHeader header, final Exception error)
throws IOException {
final ManagementResponseHeader response = ManagementResponseHeader.create(header, error);
final MessageOutputStream output = channel.writeMessage();
try {
writeHeader(response, output);
output.close();
} finally {
StreamUtils.safeClose(output);
}
}
@Override
public void connectionOpened(final Connection connection) throws IOException {
final Channel channel =
openChannel(connection, CHANNEL_SERVICE_TYPE, configuration.getOptionMap());
if (setChannel(channel)) {
channel.receiveMessage(channelHandler.getReceiver());
channel.addCloseHandler(channelHandler);
try {
// Start the registration process
channelHandler.executeRequest(new RegisterHostControllerRequest(), null).getResult().get();
} catch (Exception e) {
if (e.getCause() instanceof IOException) {
throw (IOException) e.getCause();
}
throw new IOException(e);
}
// Registered
registered();
} else {
channel.closeAsync();
}
}
@Override
public void handleMessage(
final Channel channel, final DataInput input, final ManagementProtocolHeader header)
throws IOException {
final byte type = header.getType();
if (type == ManagementProtocol.TYPE_REQUEST) {
final ManagementRequestHeader request = (ManagementRequestHeader) header;
handleMessage(channel, input, request);
} else {
safeWriteResponse(channel, header, MESSAGES.unrecognizedType(type));
channel.close();
}
}
@Override
public Channel.Key startReceiving(final Channel channel) {
final ManagementChannelHandler handler =
new ManagementChannelHandler(
ManagementClientChannelStrategy.create(channel), getExecutor());
// Assemble the request handlers for the domain channel
handler.addHandlerFactory(
new HostControllerRegistrationHandler(handler, getController(), domainController));
handler.addHandlerFactory(new ModelControllerClientOperationHandler(getController(), handler));
handler.addHandlerFactory(new MasterDomainControllerOperationHandlerImpl(domainController));
final Channel.Key key =
channel.addCloseHandler(
new CloseHandler<Channel>() {
@Override
public void handleClose(Channel closed, IOException exception) {
handler.shutdown();
boolean interrupted = false;
try {
if (!handler.awaitCompletion(CHANNEL_SHUTDOWN_TIMEOUT, TimeUnit.MILLISECONDS)) {
ROOT_LOGGER.gracefulManagementChannelHandlerShutdownTimedOut(
CHANNEL_SHUTDOWN_TIMEOUT);
}
} catch (InterruptedException e) {
interrupted = true;
ROOT_LOGGER.serviceShutdownIncomplete(e);
} catch (Exception e) {
ROOT_LOGGER.serviceShutdownIncomplete(e);
} finally {
handler.shutdownNow();
if (interrupted) {
Thread.currentThread().interrupt();
}
}
}
});
channel.receiveMessage(handler.getReceiver());
return key;
}
@Override
public synchronized ProxyController popChannelAndCreateProxy(final String hostName) {
final Channel channel = unregisteredHostChannels.remove(hostName);
if (channel == null) {
throw new IllegalArgumentException("No channel for host " + hostName);
}
channel.addCloseHandler(
new CloseHandler<Channel>() {
public void handleClose(final Channel closed, final IOException exception) {
unregisterRemoteHost(hostName);
}
});
final PathAddress addr =
PathAddress.pathAddress(PathElement.pathElement(ModelDescriptionConstants.HOST, hostName));
RemoteProxyController proxy =
RemoteProxyController.create(
proxyExecutor, addr, ProxyOperationAddressTranslator.HOST, channel);
ProxyCreatedCallback callback = proxyCreatedCallbacks.remove(hostName);
if (callback != null) {
callback.proxyCreated(proxy);
}
return proxy;
}
public void handleMessage(
final Channel channel, final DataInput input, final ManagementRequestHeader header)
throws IOException {
final byte type = header.getOperationId();
if (type == DomainServerProtocol.REGISTER_REQUEST) {
expectHeader(input, DomainServerProtocol.PARAM_SERVER_NAME);
final String serverName = input.readUTF();
CONTROLLER_MANAGEMENT_LOGGER.serverRegistered(serverName, channel);
executorService.execute(
new Runnable() {
@Override
public void run() {
// Create the server mgmt handler
final ManagementChannelHandler handler =
new ManagementChannelHandler(
channel, executorService, new ServerHandlerFactory(serverName));
ServerToHostOperationHandlerFactoryService.this
.callback
.getValue()
.serverCommunicationRegistered(
serverName,
handler,
new ServerInventory.ProxyCreatedCallback() {
@Override
public void proxyOperationHandlerCreated(
final ManagementRequestHandlerFactory handlerFactory) {
channel.addCloseHandler(
new CloseHandler<Channel>() {
@Override
public void handleClose(Channel closed, IOException exception) {
handler.shutdownNow();
}
});
// Send the response once the server is fully registered
safeWriteResponse(channel, header, null);
// Once the server and handlers are registered, receive the next message
handler.addHandlerFactory(handlerFactory);
channel.receiveMessage(handler.getReceiver());
}
});
}
});
} else {
safeWriteResponse(channel, header, MESSAGES.unrecognizedType(type));
channel.close();
}
}
@Override
public void handleMessage(Channel channel, MessageInputStream messageInputStream) {
try {
this.processMessage(channel, messageInputStream);
// enroll for next message (whenever it's available)
channel.receiveMessage(this);
} catch (Throwable e) {
// log it
EjbLogger.ROOT_LOGGER.exceptionOnChannel(e, channel, messageInputStream);
// no more messages can be sent or received on this channel
IoUtils.safeClose(channel);
} finally {
IoUtils.safeClose(messageInputStream);
}
}
private void sendVersionZeroHeader(Channel channel) throws IOException {
log.debug("Selecting version 0x00 to receive full version list.");
CancellableDataOutputStream dos = new CancellableDataOutputStream(channel.writeMessage());
try {
dos.writeBytes(JMX);
dos.writeByte(0x00);
String remotingJMXVersion = Version.getVersionString();
byte[] versionBytes = remotingJMXVersion.getBytes("UTF-8");
dos.writeInt(versionBytes.length);
dos.write(versionBytes);
} catch (IOException e) {
dos.cancel();
throw e;
} finally {
IoUtils.safeClose(dos);
}
}
protected void processMessage(final Channel channel, final InputStream inputStream)
throws IOException {
// read the first byte to see what type of a message it is
final int header = inputStream.read();
if (EjbLogger.ROOT_LOGGER.isTraceEnabled()) {
EjbLogger.ROOT_LOGGER.trace(
"Got message with header 0x" + Integer.toHexString(header) + " on channel " + channel);
}
final MessageHandler messageHandler = getMessageHandler((byte) header);
if (messageHandler == null) {
// enroll for next message (whenever it's available)
channel.receiveMessage(this);
// log a message that the message wasn't identified
EjbLogger.ROOT_LOGGER.unsupportedMessageHeader(Integer.toHexString(header), channel);
return;
}
// let the message handler process the message
messageHandler.processMessage(channelAssociation, inputStream);
}
@Override
public ManagementChannelHandler startReceiving(final Channel channel) {
final ManagementChannelHandler handler =
new ManagementChannelHandler(
ManagementClientChannelStrategy.create(channel), getExecutor());
// Assemble the request handlers for the domain channel
handler.addHandlerFactory(
new HostControllerRegistrationHandler(
handler,
domainController,
operationExecutor,
getExecutor(),
runtimeIgnoreTransformationRegistry));
handler.addHandlerFactory(new ModelControllerClientOperationHandler(getController(), handler));
handler.addHandlerFactory(
new MasterDomainControllerOperationHandlerImpl(domainController, getExecutor()));
handler.addHandlerFactory(pongRequestHandler);
handler.addHandlerFactory(
new DomainTransactionalProtocolOperationHandler(txOperationExecutor, handler));
channel.receiveMessage(handler.getReceiver());
return handler;
}
@Override
public synchronized void registerChannel(
final String hostName, final Channel channel, final ProxyCreatedCallback callback) {
/* Disable this as part of the REM3-121 workarounds
PathAddress addr = PathAddress.pathAddress(PathElement.pathElement(HOST, hostName));
if (modelNodeRegistration.getProxyController(addr) != null) {
throw new IllegalArgumentException("There is already a registered slave named '" + hostName + "'");
}
*/
if (unregisteredHostChannels.containsKey(hostName)) {
throw new IllegalArgumentException("Already have a connection for host " + hostName);
}
unregisteredHostChannels.put(hostName, channel);
proxyCreatedCallbacks.put(hostName, callback);
channel.addCloseHandler(
new CloseHandler<Channel>() {
public void handleClose(final Channel closed, final IOException exception) {
unregisteredHostChannels.remove(hostName);
proxyCreatedCallbacks.remove(hostName);
}
});
}
/**
* Verify the header received, confirm to the server the version selected, create the client
* channel receiver and assign it to the channel.
*/
public void handleMessage(
org.jboss.remoting3.Channel channel, MessageInputStream messageInputStream) {
DataInputStream dis = new DataInputStream(messageInputStream);
try {
log.tracef("Bytes Available %d", dis.available());
byte[] firstThree = new byte[3];
dis.read(firstThree);
log.tracef("First Three %s", new String(firstThree));
if (Arrays.equals(firstThree, JMX_BYTES) == false) {
throw new IOException("Invalid leading bytes in header.");
}
log.tracef("Bytes Available %d", dis.available());
int versionCount = dis.readInt();
log.tracef("Expecting %d versions", versionCount);
byte[] versions = new byte[versionCount];
dis.read(versions);
if (log.isDebugEnabled()) {
StringBuffer sbVersions = new StringBuffer("Versions ");
for (byte current : versions) {
sbVersions.append(" 0x0").append(current);
}
log.debugf("Available version (%s)", sbVersions);
}
byte stability = dis.readByte();
switch (stability) {
case STABLE:
log.debug("Calling a stable server");
break;
case SNAPSHOT:
log.warn("Calling a snapshot server");
break;
default:
throw new IOException("Unrecognised stability value.");
}
String serverVersion = null;
if (expectServerVersion) {
int length = dis.readInt();
byte[] versionBytes = new byte[length];
dis.read(versionBytes);
serverVersion = new String(versionBytes, "UTF-8");
log.debugf("Server version %s", serverVersion);
}
for (byte current : versions) {
if (current == 0x00) {
sendVersionZeroHeader(channel);
expectServerVersion = true;
channel.receiveMessage(this);
return;
}
}
InitialHeader ih = new InitialHeader();
ih.versions = versions;
ih.stability = stability;
ih.serverVersion = serverVersion;
future.setResult(ih);
} catch (IOException e) {
log.error("Unable to negotiate connection.", e);
future.setException(e);
} finally {
IoUtils.safeClose(dis);
}
}
@Override
public HandleableCloseable.Key startReceiving(final Channel channel) {
final Channel.Receiver receiver = new InitialMessageHandler(executorService);
channel.receiveMessage(receiver);
return null;
}