/**
* Wait for Acknowledgement from other server. FIXME Please, not wait only for three characters,
* better control that the wait ack message is correct.
*
* @throws java.io.IOException
* @throws java.net.SocketTimeoutException
*/
protected void waitForAck() throws java.io.IOException {
try {
boolean ackReceived = false;
boolean failAckReceived = false;
ackbuf.clear();
int bytesRead = 0;
int i = soIn.read();
while ((i != -1) && (bytesRead < Constants.ACK_COMMAND.length)) {
bytesRead++;
byte d = (byte) i;
ackbuf.append(d);
if (ackbuf.doesPackageExist()) {
byte[] ackcmd = ackbuf.extractDataPackage(true).getBytes();
ackReceived =
Arrays.equals(ackcmd, org.apache.catalina.tribes.transport.Constants.ACK_DATA);
failAckReceived =
Arrays.equals(ackcmd, org.apache.catalina.tribes.transport.Constants.FAIL_ACK_DATA);
ackReceived = ackReceived || failAckReceived;
break;
}
i = soIn.read();
}
if (!ackReceived) {
if (i == -1)
throw new IOException(
sm.getString(
"IDataSender.ack.eof", getAddress(), new Integer(socket.getLocalPort())));
else
throw new IOException(
sm.getString(
"IDataSender.ack.wrong", getAddress(), new Integer(socket.getLocalPort())));
} else if (failAckReceived && getThrowOnFailedAck()) {
throw new RemoteProcessException(
"Received a failed ack:org.apache.catalina.tribes.transport.Constants.FAIL_ACK_DATA");
}
} catch (IOException x) {
String errmsg =
sm.getString(
"IDataSender.ack.missing",
getAddress(),
new Integer(socket.getLocalPort()),
new Long(getTimeout()));
if (SenderState.getSenderState(getDestination()).isReady()) {
SenderState.getSenderState(getDestination()).setSuspect();
if (log.isWarnEnabled()) log.warn(errmsg, x);
} else {
if (log.isDebugEnabled()) log.debug(errmsg, x);
}
throw x;
} finally {
ackbuf.clear();
}
}
/**
* @param destination Member[] - destination.length > 0
* @param msg Serializable - the message to send
* @param options 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 UniqueId send(Member[] destination, Serializable msg, int options, ErrorHandler handler)
throws ChannelException {
if (msg == null) throw new ChannelException(sm.getString("groupChannel.nullMessage"));
XByteBuffer buffer = null;
try {
if (destination == null || destination.length == 0) {
throw new ChannelException(sm.getString("groupChannel.noDestination"));
}
ChannelData data = new ChannelData(true); // generates a unique Id
data.setAddress(getLocalMember(false));
data.setTimestamp(System.currentTimeMillis());
byte[] b = null;
if (msg instanceof ByteMessage) {
b = ((ByteMessage) msg).getMessage();
options = options | SEND_OPTIONS_BYTE_MESSAGE;
} else {
b = XByteBuffer.serialize(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);
InterceptorPayload payload = null;
if (handler != null) {
payload = new InterceptorPayload();
payload.setErrorHandler(handler);
}
getFirstInterceptor().sendMessage(destination, data, payload);
if (Logs.MESSAGES.isTraceEnabled()) {
Logs.MESSAGES.trace(
"GroupChannel - Sent msg:"
+ new UniqueId(data.getUniqueId())
+ " at "
+ new java.sql.Timestamp(System.currentTimeMillis())
+ " to "
+ Arrays.toNameString(destination));
Logs.MESSAGES.trace(
"GroupChannel - Send Message:" + new UniqueId(data.getUniqueId()) + " is " + msg);
}
return new UniqueId(data.getUniqueId());
} catch (Exception x) {
if (x instanceof ChannelException) throw (ChannelException) x;
throw new ChannelException(x);
} finally {
if (buffer != null) BufferPool.getBufferPool().returnBuffer(buffer);
}
}
public static void main(String[] args) throws Exception {
Member mbr = new MemberImpl("localhost", 9999, 0);
ChannelData data = new ChannelData();
data.setOptions(Channel.SEND_OPTIONS_BYTE_MESSAGE);
data.setAddress(mbr);
byte[] buf = new byte[8192 * 4];
data.setMessage(new XByteBuffer(buf, false));
buf = XByteBuffer.createDataPackage(data);
int len = buf.length;
System.out.println("Message size:" + len + " bytes");
BigDecimal total = new BigDecimal((double) 0);
BigDecimal bytes = new BigDecimal((double) len);
Socket socket = new Socket("localhost", 9999);
System.out.println("Writing to 9999");
OutputStream out = socket.getOutputStream();
long start = 0;
double mb = 0;
boolean first = true;
int count = 0;
DecimalFormat df = new DecimalFormat("##.00");
while (count < 1000000) {
if (first) {
first = false;
start = System.currentTimeMillis();
}
out.write(buf, 0, buf.length);
mb += ((double) buf.length) / 1024 / 1024;
total = total.add(bytes);
if (((++count) % 10000) == 0) {
long time = System.currentTimeMillis();
double seconds = ((double) (time - start)) / 1000;
System.out.println(
"Throughput "
+ df.format(mb / seconds)
+ " MB/seconds messages "
+ count
+ ", total "
+ mb
+ " MB, total "
+ total
+ " bytes.");
}
}
out.flush();
System.out.println("Complete, sleeping 5 seconds");
Thread.sleep(5000);
}
protected static boolean memberAlive(
Member mbr,
byte[] msgData,
boolean sendTest,
boolean readTest,
long readTimeout,
long conTimeout,
int optionFlag) {
// could be a shutdown notification
if (Arrays.equals(mbr.getCommand(), Member.SHUTDOWN_PAYLOAD)) return false;
Socket socket = new Socket();
try {
InetAddress ia = InetAddress.getByAddress(mbr.getHost());
InetSocketAddress addr = new InetSocketAddress(ia, mbr.getPort());
socket.setSoTimeout((int) readTimeout);
socket.connect(addr, (int) conTimeout);
if (sendTest) {
ChannelData data = new ChannelData(true);
data.setAddress(mbr);
data.setMessage(new XByteBuffer(msgData, false));
data.setTimestamp(System.currentTimeMillis());
int options = optionFlag | Channel.SEND_OPTIONS_BYTE_MESSAGE;
if (readTest) options = (options | Channel.SEND_OPTIONS_USE_ACK);
else options = (options & (~Channel.SEND_OPTIONS_USE_ACK));
data.setOptions(options);
byte[] message = XByteBuffer.createDataPackage(data);
socket.getOutputStream().write(message);
if (readTest) {
int length = socket.getInputStream().read(message);
return length > 0;
}
} // end if
return true;
} catch (SocketTimeoutException sx) {
// do nothing, we couldn't connect
} catch (ConnectException cx) {
// do nothing, we couldn't connect
} catch (Exception x) {
log.error("Unable to perform failure detection check, assuming member down.", x);
} finally {
try {
socket.close();
} catch (Exception ignore) {
}
}
return false;
}
@Override
public void messageReceived(ChannelMessage msg) {
if (!okToProcess(msg.getOptions())) {
super.messageReceived(msg);
return;
}
int msgnr =
XByteBuffer.toInt(msg.getMessage().getBytesDirect(), msg.getMessage().getLength() - 4);
msg.getMessage().trim(4);
MessageOrder order = new MessageOrder(msgnr, (ChannelMessage) msg.deepclone());
try {
inLock.writeLock().lock();
if (processIncoming(order)) processLeftOvers(msg.getAddress(), false);
} finally {
inLock.writeLock().unlock();
}
}
public static Data createRandomData(int size, int number) {
int i = r.nextInt();
i = (i % 127);
int length = Math.abs(r.nextInt() % size);
if (length < 100) length += 100;
Data d = new Data();
d.length = length;
d.key = (byte) i;
d.data = new byte[length];
Arrays.fill(d.data, d.key);
if (number > 0 && d.data.length >= 4) {
// populate number
d.hasNr = true;
XByteBuffer.toBytes(number, d.data, 0);
}
return d;
}
@Override
public void broadcast(ChannelMessage message) throws ChannelException {
if (impl == null || (impl.startLevel & Channel.MBR_TX_SEQ) != Channel.MBR_TX_SEQ)
throw new ChannelException(sm.getString("mcastService.noStart"));
byte[] data = XByteBuffer.createDataPackage((ChannelData) message);
if (data.length > McastServiceImpl.MAX_PACKET_SIZE) {
throw new ChannelException(
sm.getString(
"mcastService.exceed.maxPacketSize",
Integer.toString(data.length),
Integer.toString(McastServiceImpl.MAX_PACKET_SIZE)));
}
DatagramPacket packet = new DatagramPacket(data, 0, data.length);
try {
impl.send(false, packet);
} catch (Exception x) {
throw new ChannelException(x);
}
}
public int getNumber() {
if (!hasNr) return -1;
return XByteBuffer.toInt(this.data, 0);
}
public static void main(String[] args) throws Exception {
Selector selector = Selector.open();
Member mbr = new MemberImpl("localhost", 9999, 0);
ChannelData data = new ChannelData();
data.setOptions(Channel.SEND_OPTIONS_BYTE_MESSAGE);
data.setAddress(mbr);
byte[] buf = new byte[8192 * 4];
data.setMessage(new XByteBuffer(buf, false));
buf = XByteBuffer.createDataPackage(data);
int len = buf.length;
BigDecimal total = new BigDecimal((double) 0);
BigDecimal bytes = new BigDecimal((double) len);
NioSender sender = new NioSender();
sender.setDestination(mbr);
sender.setDirectBuffer(true);
sender.setSelector(selector);
sender.setTxBufSize(1024 * 1024);
sender.connect();
sender.setMessage(buf);
System.out.println("Writing to 9999");
long start = 0;
double mb = 0;
boolean first = true;
int count = 0;
DecimalFormat df = new DecimalFormat("##.00");
while (count < 100000) {
if (first) {
first = false;
start = System.currentTimeMillis();
}
sender.setMessage(buf);
int selectedKeys = 0;
try {
selectedKeys = selector.select(0);
} catch (Exception e) {
e.printStackTrace();
continue;
}
if (selectedKeys == 0) {
continue;
}
Iterator it = selector.selectedKeys().iterator();
while (it.hasNext()) {
SelectionKey sk = (SelectionKey) it.next();
it.remove();
try {
int readyOps = sk.readyOps();
sk.interestOps(sk.interestOps() & ~readyOps);
if (sender.process(sk, false)) {
total = total.add(bytes);
sender.reset();
sender.setMessage(buf);
mb += ((double) len) / 1024 / 1024;
if (((++count) % 10000) == 0) {
long time = System.currentTimeMillis();
double seconds = ((double) (time - start)) / 1000;
System.out.println(
"Throughput "
+ df.format(mb / seconds)
+ " MB/seconds, total "
+ mb
+ " MB, total "
+ total
+ " bytes.");
}
}
} catch (Throwable t) {
t.printStackTrace();
return;
}
}
selector.selectedKeys().clear();
}
System.out.println("Complete, sleeping 15 seconds");
Thread.sleep(15000);
}
/**
* 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) {
if (msg == null) return;
try {
if (Logs.MESSAGES.isTraceEnabled()) {
Logs.MESSAGES.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 = new ByteMessage(msg.getMessage().getBytes());
} else {
try {
fwd =
XByteBuffer.deserialize(
msg.getMessage().getBytesDirect(), 0, msg.getMessage().getLength());
} catch (Exception sx) {
log.error(sm.getString("groupChannel.unable.deserialize", msg), sx);
return;
}
}
if (Logs.MESSAGES.isTraceEnabled()) {
Logs.MESSAGES.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 RpcChannel) rx = true;
}
} // for
if ((!rx) && (fwd instanceof RpcMessage)) {
// if we have a message that requires a response,
// but none was given, send back an immediate one
sendNoRpcChannelReply((RpcMessage) fwd, source);
}
if (Logs.MESSAGES.isTraceEnabled()) {
Logs.MESSAGES.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(sm.getString("groupChannel.receiving.error"), x);
throw new RemoteProcessException("Exception:" + x.getMessage(), x);
}
}