/**
* @param event
* @param depth
* @param lfc
* @param ndcStr
*/
private void start(LoggingEvent event, int depth, TimelineLifecycle lfc, String ndcStr) {
NdcContext ndcCtxt = getNdcContext(lfc);
if (ndcCtxt.getNdcObj() != null)
throw new IllegalStateException(
"ZMonitor Log4j stack Operation Logic Error or forget to cleanup the state.");
ndcCtxt.doStart(createName(event, null), event.getRenderedMessage(), ndcStr, depth);
}
/**
* Developer will use log4j's: NDC.push() & NDC.pop() to command ZMonitor to do: tl.start() &
* tl.end()
*
* <p>ASSUMPTION: user wont use ZMonitor directly while using log4j NDC, the current tl.depth will
* always match to the last NDC state we may consider the direct operation of timeline in the
* future.
*
* <p>Base on this concept:
*
* <p>If: current NDC Depth > last NDC Depth( or there's no last NDC Depth) we need to do
* tl.start(), and push current NDC Depth. (check : if currentTlDepth != lastTlDepth do failover.)
*
* <p>If: current NDC Depth = last NDC Depth we simply do tl.record().
*
* <p>If: current NDC Depth < last NDC Depth if: current NDC Depth = last.last NDC Depth We call
* tl.end() and pop NDC stack, because user is telling us he want to end the current stack. (check
* : if currentTlDepth != lastTlDepth do failover.)
*
* <p>if: current NDC Depth > last.last NDC Depth We simply do tl.record() because it's not reach
* the end yet. (check : if currentTlDepth != lastTlDepth do failover.)
*
* <p>if: current NDC Depth < last.last NDC Depth We recursively do tl.end with Pop NDCStack and
* renew the last NDC depth till this condition is not satisfied.
*
* @param event
* @param message
* @param ndcDepth
* @param ndcStr
*/
private void record(LoggingEvent event, int ndcDepth, TimelineLifecycle lfc, String ndcStr) {
// TODO: how to figure out this part?
// condition 1. Timeline already started.
NdcContext ndcCtxt = getNdcContext(lfc);
NdcObj last = ndcCtxt.getNdcObj();
// if(last.tlDepth != getCurrentTlDepth(lfc)){
// //TODO: Timeline is operated between two LOG4J log commands, the stack information might be
// f****d up!
// /*
// * Should I allow user to mix log4j with native ZMonitor API?
// */
// }
String mesg = event.getRenderedMessage();
if (last == null) {
ndcCtxt.doRecord(createName(event, null), mesg, ndcDepth);
return;
}
if (ndcDepth > last.depth) {
ndcCtxt.doStart(createName(event, null), mesg, ndcStr, ndcDepth);
} else if (ndcDepth == last.depth) {
ndcCtxt.doRecord(createName(event, null), mesg, ndcDepth);
} else { // if( ndcDepth < last.depth )
if (ndcDepth == last.previous.depth) {
ndcCtxt.doEnd(createName(event, "L4J_END"), mesg);
} else if (ndcDepth > last.previous.depth) {
ndcCtxt.doRecord(createName(event, null), mesg, ndcDepth);
} else { // if(ndcDepth < last.previous.depth)
autoEnd(ndcCtxt);
record(event, ndcDepth, lfc, ndcStr); // recursive call...
return;
}
}
}