/**
* Creates new overlay item or adds new underlay item into existing overlay item if the condition
* for correlation is satisfied
*
* @param newItem - new underlay item on which the correlation is created
*/
private void checkForPossibleAggregation(UnderlayItem newItem, String topologyId) {
for (TopologyStore ts : topoStoreProvider.getTopologyStores()) {
if ((!ts.getId().equals(topologyId)) || ts.isAggregateInside()) {
for (Entry<YangInstanceIdentifier, UnderlayItem> topoStoreEntry :
ts.getUnderlayItems().entrySet()) {
UnderlayItem topoStoreItem = topoStoreEntry.getValue();
if (newItem.getCorrelationItem() == CorrelationItemEnum.Link) {
checkForPossibleAggregationOfLinks(newItem, topoStoreItem);
} else {
if (scriptEngine != null) {
if (aggregableWithScript(newItem, topoStoreItem)) {
aggregateItems(newItem, topoStoreItem);
return;
}
} else if (!newItem.equals(topoStoreItem)
&& matchTargetFields(newItem, topoStoreItem)) {
// no previous aggregation on this node
aggregateItems(newItem, topoStoreItem);
return;
}
}
}
}
}
if (wrapSingleItem()) {
List<UnderlayItem> itemsToAggregate = new ArrayList<>();
itemsToAggregate.add(newItem);
OverlayItem overlayItem = new OverlayItem(itemsToAggregate, newItem.getCorrelationItem());
newItem.setOverlayItem(overlayItem);
topologyManager.addOverlayItem(overlayItem);
}
}
private void removeUnderlayItemFromOverlayItem(UnderlayItem itemToRemove) {
OverlayItem overlayItemIdentifier = itemToRemove.getOverlayItem();
if (null != overlayItemIdentifier) {
Queue<UnderlayItem> underlayItems = overlayItemIdentifier.getUnderlayItems();
underlayItems.remove(itemToRemove);
itemToRemove.setOverlayItem(null);
if (underlayItems.size() < getMinUnderlayItems()) {
LOG.debug("Removing overlay item");
for (UnderlayItem remainingNode : underlayItems) {
remainingNode.setOverlayItem(null);
}
topologyManager.removeOverlayItem(overlayItemIdentifier);
} else {
LOG.debug("Removing underlay item from overlay item");
topologyManager.updateOverlayItem(overlayItemIdentifier);
}
}
}
/**
* @param newItem item received from notification
* @param topoStoreItem item already stored in topostore
*/
private void aggregateItems(UnderlayItem newItem, UnderlayItem topoStoreItem) {
if (topoStoreItem.getOverlayItem() == null) {
LOG.debug("Creating new Logical Node");
// create new logical node
List<UnderlayItem> nodesToAggregate = new ArrayList<>();
nodesToAggregate.add(newItem);
nodesToAggregate.add(topoStoreItem);
OverlayItem overlayItem =
new OverlayItem(nodesToAggregate, topoStoreItem.getCorrelationItem());
topoStoreItem.setOverlayItem(overlayItem);
newItem.setOverlayItem(overlayItem);
topologyManager.addOverlayItem(overlayItem);
return;
}
LOG.debug("Adding physical node to existing Logical Node");
// add new physical node into existing logical node
OverlayItem overlayItem = topoStoreItem.getOverlayItem();
newItem.setOverlayItem(overlayItem);
overlayItem.addUnderlayItem(newItem);
topologyManager.updateOverlayItem(overlayItem);
}
@Override
public void processCreatedChanges(
YangInstanceIdentifier identifier, UnderlayItem createdEntry, String topologyId) {
if (createdEntry != null) {
LOGGER.trace("Processing createdChnages");
Map<YangInstanceIdentifier, UnderlayItem> items =
topoStoreProvider.getTopologyStore(topologyId).getUnderlayItems();
items.put(identifier, createdEntry);
OverlayItem item = wrapUnderlayItem(createdEntry);
createdEntry.setOverlayItem(item);
manager.addOverlayItem(item);
}
}
@Override
public void processUpdatedChanges(
YangInstanceIdentifier identifier, UnderlayItem updatedEntry, String topologyId) {
if (updatedEntry != null) {
LOGGER.trace("Processing updateChanges");
Map<YangInstanceIdentifier, UnderlayItem> items =
topoStoreProvider.getTopologyStore(topologyId).getUnderlayItems();
UnderlayItem oldItem = items.get(identifier);
OverlayItem item = oldItem.getOverlayItem();
Queue<UnderlayItem> underlayItems = new ConcurrentLinkedQueue<>();
underlayItems.add(updatedEntry);
item.setUnderlayItems(underlayItems);
updatedEntry.setOverlayItem(item);
items.put(identifier, updatedEntry);
manager.updateOverlayItem(item);
}
}
