/**
* This method deals with messages arrived as regular message but its contents are compressed.
* Such messages come from message senders who are configured to compress large messages, and if
* some of the messages are compressed below the min-large-message-size limit, they are sent as
* regular messages. <br>
* However when decompressing the message, we are not sure how large the message could be.. for
* that reason we fake a large message controller that will deal with the message as it was a
* large message <br>
* Say that you sent a 1G message full of spaces. That could be just bellow 100K compressed but
* you wouldn't have enough memory to decompress it
*/
private void handleCompressedMessage(final ClientMessageInternal clMessage) throws Exception {
ClientLargeMessageImpl largeMessage = new ClientLargeMessageImpl();
largeMessage.retrieveExistingData(clMessage);
File largeMessageCache = null;
if (session.isCacheLargeMessageClient()) {
largeMessageCache =
File.createTempFile("tmp-large-message-" + largeMessage.getMessageID() + "-", ".tmp");
largeMessageCache.deleteOnExit();
}
ClientSessionFactory sf = session.getSessionFactory();
ServerLocator locator = sf.getServerLocator();
long callTimeout = locator.getCallTimeout();
currentLargeMessageController =
new LargeMessageControllerImpl(
this, largeMessage.getLargeMessageSize(), callTimeout, largeMessageCache);
currentLargeMessageController.setLocal(true);
// sets the packet
ActiveMQBuffer qbuff = clMessage.getBodyBuffer();
int bytesToRead = qbuff.writerIndex() - qbuff.readerIndex();
final byte[] body = qbuff.readBytes(bytesToRead).toByteBuffer().array();
largeMessage.setLargeMessageController(
new CompressedLargeMessageControllerImpl(currentLargeMessageController));
currentLargeMessageController.addPacket(body, body.length, false);
handleRegularMessage(largeMessage);
}
public synchronized void handleLargeMessageContinuation(
final byte[] chunk, final int flowControlSize, final boolean isContinues) throws Exception {
if (closing) {
return;
}
if (currentLargeMessageController == null) {
if (isTrace) {
ActiveMQClientLogger.LOGGER.trace(
"Sending back credits for largeController = null " + flowControlSize);
}
flowControl(flowControlSize, false);
} else {
currentLargeMessageController.addPacket(chunk, flowControlSize, isContinues);
}
}