/**
* @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);
}
}
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;
}
