/**
* Remove a ReliantContinuationState from the top SeqContinuationState in the stack. This should
* be done when returning back from a sub branch of a FlowContinuableMediator.
*
* @param synCtx MessageContext
*/
public static void removeReliantContinuationState(MessageContext synCtx) {
if (synCtx.isContinuationEnabled()) {
if (!synCtx.getContinuationStateStack().isEmpty()) {
ContinuationState seqContState = synCtx.getContinuationStateStack().peek();
seqContState.removeLeafChild();
} else {
// Ideally we should not get here.
log.warn("Continuation Stack is empty. Probably due to a configuration issue");
}
}
}
public boolean mediate(MessageContext synCtx, ContinuationState continuationState) {
SynapseLog synLog = getLog(synCtx);
if (synLog.isTraceOrDebugEnabled()) {
synLog.traceOrDebug("Invoke mediator : Mediating from ContinuationState");
}
boolean result;
int subBranch = ((ReliantContinuationState) continuationState).getSubBranch();
if (subBranch == 0) {
// Default flow
TemplateMediator templateMediator =
(TemplateMediator) synCtx.getSequenceTemplate(targetTemplate);
if (!continuationState.hasChild()) {
result = templateMediator.mediate(synCtx, continuationState.getPosition() + 1);
if (result) {
templateMediator.popFuncContextFrom(synCtx);
}
} else {
FlowContinuableMediator mediator =
(FlowContinuableMediator) templateMediator.getChild(continuationState.getPosition());
result = mediator.mediate(synCtx, continuationState.getChildContState());
}
} else {
// Pre fetching invoke mediator flow
String prefetchInvokeKey = key.evaluateValue(synCtx);
InvokeMediator prefetchInvoke =
(InvokeMediator) synCtx.getDefaultConfiguration(prefetchInvokeKey);
ContinuationState childContinuationState = continuationState.getChildContState();
result = prefetchInvoke.mediate(synCtx, childContinuationState);
if (result && !childContinuationState.hasChild()) {
// Pre fetching invoke mediator flow completed.
// Remove ContinuationState represent the prefetchInvoke mediator and
// flip the subbranch to default flow
continuationState.removeLeafChild();
((ReliantContinuationState) continuationState).setSubBranch(0);
// after prefetch invoke mediator flow, execute default flow
result = mediate(synCtx, false);
}
}
return result;
}