void Selector::onSuccess(Behavior* behavior)
{
const uint32_t idx = indexOf(behavior);
if(!indexIsCurrent(idx))
{
terminateFromIndex(idx+1);
}
notifySuccess();
}
void SequentialComposite::run()
{
// The composite has no children.
if(getChildren().empty())
{
notifySuccess();
}
// Start by scheduling the first child for execution.
else
{
mScheduler.enqueue(getChildren()[mCurrentBehavior]);
setStatus(StatusWaiting);
}
}
void Sequence::onSuccess(Behavior* behavior)
{
const uint32_t idx = indexOf(behavior);
if(!indexIsCurrent(idx))
{
terminateFromIndex(idx+1);
}
if(currentIsLastBehavior())
{
notifySuccess();
}
else
{
scheduleNextBehavior();
}
}
void Parallel::run()
{
if(getChildren().empty())
{
notifySuccess();
return;
}
// Schedule all the child behaviors at once.
// Reversed to keep the execution sequence left-to-right using our sequential scheduler.
for(std::vector<Behavior*>::const_reverse_iterator it = getChildren().rbegin();
it != getChildren().rend(); ++it)
{
mScheduler.enqueue(*it);
}
setStatus(StatusWaiting);
}
void Parallel::onSuccess(Behavior* behavior)
{
// Set the corresponding flags for the behavior.
const uint32_t idx = indexOf(behavior);
ReturnCode before = mCodes[idx];
mCodes[idx] = ReturnCodeSuccess;
if(allChildrenSucceeded())
{
// Signal successful execution only after all children have succeeded.
notifySuccess();
}
else if(before == ReturnCodeFailure && !anyChildrenFailed())
{
// This behavior previously failed the parallel node.
// Schedule the parallel node to run again to restart all terminated nodes and
// tell the parent node that this node has an uncertain state (again).
setStatus(StatusRunning);
notifyReset();
}
}
void Decorator::onSuccess(Behavior* behavior)
{
UNUSED(behavior);
notifySuccess();
}
SenderState SenderThread::processVersionMismatch() {
WTLOG(INFO) << "entered PROCESS_VERSION_MISMATCH state ";
WDT_CHECK(threadStats_.getLocalErrorCode() == ABORT);
auto negotiationStatus = wdtParent_->getNegotiationStatus();
WDT_CHECK_NE(negotiationStatus, V_MISMATCH_FAILED)
<< "Thread should have ended in case of version mismatch";
if (negotiationStatus == V_MISMATCH_RESOLVED) {
WTLOG(WARNING) << "Protocol version already negotiated, but "
"transfer still aborted due to version mismatch";
return END;
}
WDT_CHECK_EQ(negotiationStatus, V_MISMATCH_WAIT);
// Need a barrier here to make sure all the negotiated protocol versions
// have been collected
auto barrier = controller_->getBarrier(VERSION_MISMATCH_BARRIER);
barrier->execute();
WTVLOG(1) << "cleared the protocol version barrier";
auto execFunnel = controller_->getFunnel(VERSION_MISMATCH_FUNNEL);
while (true) {
auto status = execFunnel->getStatus();
switch (status) {
case FUNNEL_START: {
WTLOG(INFO) << "started the funnel for version mismatch";
wdtParent_->setProtoNegotiationStatus(V_MISMATCH_FAILED);
if (transferHistoryController_->handleVersionMismatch() != OK) {
execFunnel->notifySuccess();
return END;
}
int negotiatedProtocol = 0;
for (int threadProtocolVersion : wdtParent_->getNegotiatedProtocols()) {
if (threadProtocolVersion > 0) {
if (negotiatedProtocol > 0 &&
negotiatedProtocol != threadProtocolVersion) {
WTLOG(ERROR)
<< "Different threads negotiated different protocols "
<< negotiatedProtocol << " " << threadProtocolVersion;
execFunnel->notifySuccess();
return END;
}
negotiatedProtocol = threadProtocolVersion;
}
}
WDT_CHECK_GT(negotiatedProtocol, 0);
WLOG_IF(INFO, negotiatedProtocol != threadProtocolVersion_)
<< *this << " Changing protocol version to " << negotiatedProtocol
<< ", previous version " << threadProtocolVersion_;
wdtParent_->setProtocolVersion(negotiatedProtocol);
threadProtocolVersion_ = wdtParent_->getProtocolVersion();
setFooterType();
threadStats_.setRemoteErrorCode(OK);
wdtParent_->setProtoNegotiationStatus(V_MISMATCH_RESOLVED);
wdtParent_->clearAbort();
execFunnel->notifySuccess();
return CONNECT;
}
case FUNNEL_PROGRESS: {
execFunnel->wait();
break;
}
case FUNNEL_END: {
negotiationStatus = wdtParent_->getNegotiationStatus();
WDT_CHECK_NE(negotiationStatus, V_MISMATCH_WAIT);
if (negotiationStatus == V_MISMATCH_FAILED) {
return END;
}
if (negotiationStatus == V_MISMATCH_RESOLVED) {
threadProtocolVersion_ = wdtParent_->getProtocolVersion();
threadStats_.setRemoteErrorCode(OK);
return CONNECT;
}
}
}
}
}
