/**
* @param destination Member[] - destination.length > 0
* @param msg Serializable - the message to send
* @param options int - sender options, options can trigger guarantee levels and different
* interceptors to react to the message see class documentation for the <code>Channel</code>
* object.<br>
* @param handler - callback object for error handling and completion notification, used when a
* message is sent asynchronously using the <code>Channel.SEND_OPTIONS_ASYNCHRONOUS</code>
* flag enabled.
* @return UniqueId - the unique Id that was assigned to this message
* @throws ChannelException - if an error occurs processing the message
* @see org.apache.catalina.tribes.Channel
*/
@Override
public UniqueIdRemoteInterface send(
Member[] destination, Serializable msg, int options, ErrorHandler handler)
throws ChannelException, RemoteException, RemoteException {
if (msg == null) throw new ChannelException("Cant send a NULL message");
XByteBufferRemoteInterface buffer = null;
try {
if (destination == null || destination.length == 0)
throw new ChannelException("No destination given");
ChannelDataRemoteInterface data =
gerenciadornuvem1.getChannelData(true); // generates a unique Id
data.setAddress(getLocalMember(false));
data.setTimestamp(System.currentTimeMillis());
byte[] b = null;
if (msg instanceof ByteMessageRemoteInterface) {
b = ((ByteMessageRemoteInterface) msg).getMessage();
options = options | SEND_OPTIONS_BYTE_MESSAGE;
} else {
b = gerenciadornuvem1.XByteBufferserialize(msg);
options = options & (~SEND_OPTIONS_BYTE_MESSAGE);
}
data.setOptions(options);
// XByteBuffer buffer = new XByteBuffer(b.length+128,false);
buffer = BufferPool.getBufferPool().getBuffer(b.length + 128, false);
buffer.append(b, 0, b.length);
data.setMessage(buffer);
InterceptorPayloadRemoteInterface payload = null;
if (handler != null) {
payload = gerenciadornuvem0.getInterceptorPayload();
payload.setErrorHandler(handler);
}
getFirstInterceptor().sendMessage(destination, data, payload);
if (Logs.getMessages().isTraceEnabled()) {
Logs.getMessages()
.trace(
"GroupChannel - Sent msg:"
+ new UniqueId(data.getUniqueId())
+ " at "
+ new java.sql.Timestamp(System.currentTimeMillis())
+ " to "
+ Arrays.toNameString(destination));
Logs.getMessages()
.trace(
"GroupChannel - Send Message:" + new UniqueId(data.getUniqueId()) + " is " + msg);
}
return gerenciadornuvem1.getUniqueId(data.getUniqueId());
} catch (Exception x) {
if (x instanceof ChannelException) throw (ChannelException) x;
throw new ChannelException(x);
} finally {
if (buffer != null) BufferPool.getBufferPool().returnBuffer(buffer);
}
}
/**
* Callback from the interceptor stack. <br>
* When a message is received from a remote node, this method will be invoked by the previous
* interceptor.<br>
* This method can also be used to send a message to other components within the same application,
* but its an extreme case, and you're probably better off doing that logic between the
* applications itself.
*
* @param msg ChannelMessage
*/
@Override
public void messageReceived(ChannelMessage msg) throws RemoteException, RemoteException {
if (msg == null) return;
try {
if (Logs.getMessages().isTraceEnabled()) {
Logs.getMessages()
.trace(
"GroupChannel - Received msg:"
+ new UniqueId(msg.getUniqueId())
+ " at "
+ new java.sql.Timestamp(System.currentTimeMillis())
+ " from "
+ msg.getAddress().getName());
}
Serializable fwd = null;
if ((msg.getOptions() & SEND_OPTIONS_BYTE_MESSAGE) == SEND_OPTIONS_BYTE_MESSAGE) {
fwd = gerenciadornuvem0.getByteMessage(msg.getMessage().getBytes());
} else {
try {
fwd =
gerenciadornuvem1.XByteBufferdeserialize(
msg.getMessage().getBytesDirect(), 0, msg.getMessage().getLength());
} catch (Exception sx) {
log.error("Unable to deserialize message:" + msg, sx);
return;
}
}
if (Logs.getMessages().isTraceEnabled()) {
Logs.getMessages()
.trace(
"GroupChannel - Receive Message:" + new UniqueId(msg.getUniqueId()) + " is " + fwd);
}
// get the actual member with the correct alive time
Member source = msg.getAddress();
boolean rx = false;
boolean delivered = false;
for (int i = 0; i < channelListeners.size(); i++) {
ChannelListener channelListener = (ChannelListener) channelListeners.get(i);
if (channelListener != null && channelListener.accept(fwd, source)) {
channelListener.messageReceived(fwd, source);
delivered = true;
// if the message was accepted by an RPC channel, that channel
// is responsible for returning the reply, otherwise we send an absence reply
if (channelListener instanceof RpcChannelRemoteInterface) rx = true;
}
} // for
if ((!rx) && (fwd instanceof RpcMessageRemoteInterface)) {
// if we have a message that requires a response,
// but none was given, send back an immediate one
sendNoRpcChannelReply((RpcMessageRemoteInterface) fwd, source);
}
if (Logs.getMessages().isTraceEnabled()) {
Logs.getMessages()
.trace(
"GroupChannel delivered[" + delivered + "] id:" + new UniqueId(msg.getUniqueId()));
}
} catch (Exception x) {
// this could be the channel listener throwing an exception, we should log it
// as a warning.
if (log.isWarnEnabled()) log.warn("Error receiving message:", x);
throw new RemoteProcessException("Exception:" + x.getMessage(), x);
}
}
public int doLoop(long selectTimeOut, int maxAttempts, boolean waitForAck, ChannelMessage msg)
throws IOException, ChannelException, RemoteException {
try {
int completed = 0;
int selectedKeys = selector.select(selectTimeOut);
if (selectedKeys == 0) {
return 0;
}
Iterator<SelectionKey> it = selector.selectedKeys().iterator();
while (it.hasNext()) {
SelectionKey sk = it.next();
it.remove();
int readyOps = sk.readyOps();
sk.interestOps(sk.interestOps() & ~readyOps);
org.apache.catalina.tribes.transport.nio.NioSenderRemoteInterface sender =
(org.apache.catalina.tribes.transport.nio.NioSenderRemoteInterface) sk.attachment();
try {
if (sender.process(sk, waitForAck)) {
completed++;
sender.setComplete(true);
if (Logs.getMessages().isTraceEnabled()) {
Logs.getMessages()
.trace(
"ParallelNioSender - Sent msg:"
+ new UniqueId(msg.getUniqueId())
+ " at "
+ new java.sql.Timestamp(System.currentTimeMillis())
+ " to "
+ sender.getDestination().getName());
}
SenderState.getSenderState(sender.getDestination()).setReady();
} // end if
} catch (Exception x) {
if (log.isTraceEnabled()) {
log.trace("Error while processing send to " + sender.getDestination().getName(), x);
}
org.apache.catalina.tribes.transport.SenderStateRemoteInterface state =
gerenciadornuvem0.SenderStategetSenderState(sender.getDestination());
int attempt = sender.getAttempt() + 1;
boolean retry = (sender.getAttempt() <= maxAttempts && maxAttempts > 0);
synchronized (state) {
// sk.cancel();
if (state.isSuspect()) state.setFailing();
if (state.isReady()) {
state.setSuspect();
if (retry)
log.warn(
"Member send is failing for:"
+ sender.getDestination().getName()
+ " ; Setting to suspect and retrying.");
else
log.warn(
"Member send is failing for:"
+ sender.getDestination().getName()
+ " ; Setting to suspect.",
x);
}
}
if (!isConnected()) {
log.warn(
"Not retrying send for:"
+ sender.getDestination().getName()
+ "; Sender is disconnected.");
ChannelException cx =
gerenciadornuvem1.getChannelException(
"Send failed, and sender is disconnected. Not retrying.", x);
cx.addFaultyMember(sender.getDestination(), x);
throw cx;
}
byte[] data = sender.getMessage();
if (retry) {
try {
sender.disconnect();
sender.connect();
sender.setAttempt(attempt);
sender.setMessage(data);
} catch (Exception ignore) {
state.setFailing();
}
} else {
ChannelException cx =
gerenciadornuvem1.getChannelException(
"Send failed, attempt:" + sender.getAttempt() + " max:" + maxAttempts, x);
cx.addFaultyMember(sender.getDestination(), x);
throw cx;
} // end if
}
}
return completed;
} catch (Exception excp) {
excp.printStackTrace();
}
return 0;
}
