/**
* Potential conflicts are only loaded when really necessary,
* e.g. on ADD or MODIFY
*
* @access private
* @return
*/
private function lazyLoadConflicts()
{
if (!isset($this->session) || !isset($this->store) || !isset($this->folderid) || !isset($this->conflictsContentParameters) || $this->conflictsState === false) {
ZLog::Write(LOGLEVEL_WARN, "ImportChangesICS->lazyLoadConflicts(): can not load potential conflicting changes in lazymode for conflict detection. Missing information");
return false;
}
if (!$this->conflictsLoaded) {
ZLog::Write(LOGLEVEL_DEBUG, "ImportChangesICS->lazyLoadConflicts(): loading..");
// configure an exporter so we can detect conflicts
$exporter = new ExportChangesICS($this->session, $this->store, $this->folderid);
$exporter->Config($this->conflictsState);
$exporter->ConfigContentParameters($this->conflictsContentParameters);
$exporter->InitializeExporter($this->memChanges);
// monitor how long it takes to export potential conflicts
// if this takes "too long" we cancel this operation!
$potConflicts = $exporter->GetChangeCount();
$started = time();
$exported = 0;
while (is_array($exporter->Synchronize())) {
$exported++;
// stop if this takes more than 15 seconds and there are more than 5 changes still to be exported
// within 20 seconds this should be finished or it will not be performed
if (time() - $started > 15 && $potConflicts - $exported > 5) {
ZLog::Write(LOGLEVEL_WARN, sprintf("ImportChangesICS->lazyLoadConflicts(): conflict detection cancelled as operation is too slow. In %d seconds only %d from %d changes were processed.", time() - $started, $exported, $potConflicts));
$this->conflictsLoaded = true;
return;
}
}
$this->conflictsLoaded = true;
}
}
