/**
* TODO
*
* @param virtualNetworkId TODO
* @param virtualNodeId TODO
* @param virtualPort TODO
* @param physicalNode TODO
* @return TODO
*/
private PhysicalPort virtualPortMapping(
VirtualNetworkId virtualNetworkId,
VirtualNodeId virtualNodeId,
VirtualPort virtualPort,
PhysicalNode physicalNode)
throws VNMappingException {
if (VirtualPort.PortType.Internal == virtualPort.getPortType()) {
return null;
}
List<PhysicalPort> physicalPorts = physicalNode.getPhysicalPort();
List<PhysicalResourceRequirement> physicalResourceRequirements =
virtualPort.getPhysicalResourceRequirement();
for (PhysicalPort physicalPort : physicalPorts) {
if (PhysicalPort.PortType.External == physicalPort.getPortType()
&& checkPhysicalPortSatisfied(physicalPort, physicalResourceRequirements)) {
return physicalPort;
}
}
return null;
}
/**
* TODO
*
* @param physicalPort TODO
* @param physicalResourceRequirements TODO
* @return TODO
*/
private boolean checkPhysicalPortSatisfied(
PhysicalPort physicalPort, List<PhysicalResourceRequirement> physicalResourceRequirements)
throws VNMappingException {
List<Attribute> attributes = physicalPort.getAttribute();
Attribute attribute;
for (PhysicalResourceRequirement physicalResourceRequirement : physicalResourceRequirements) {
attribute =
getPhysicalPortAttribute(attributes, physicalResourceRequirement.getAttributeName());
if (null == attribute) {
return false;
}
if (!checkPhysicalPortAttributeSatisfied(attribute, physicalResourceRequirement)) {
return false;
}
}
return true;
}
/**
* TODO
*
* @param virtualNetwork TODO
* @param userVnPnMapping TODO
* @param physicalPaths TODO
*/
public void virtualNetworkMapping(
VirtualNetwork virtualNetwork,
UserVnPnMapping userVnPnMapping,
List<PhysicalPath> physicalPaths)
throws VNMappingException {
ReadOnlyTransaction readOnlyTransaction = dataBroker.newReadOnlyTransaction();
InstanceIdentifier<PhysicalNodes> physicalNodesIid =
InstanceIdentifier.builder(PhysicalNetwork.class).child(PhysicalNodes.class).build();
Optional<PhysicalNodes> result;
try {
result = readOnlyTransaction.read(LogicalDatastoreType.OPERATIONAL, physicalNodesIid).get();
} catch (InterruptedException exception) {
throw new VNMappingException("Can not read the physical nodes.");
} catch (ExecutionException exception) {
throw new VNMappingException("Can not read the physical nodes.");
}
if (!result.isPresent()) {
throw new VNMappingException(
"Failed virtual network mapping caused by " + "absent underlying network topology.");
}
PhysicalNodes physicalNodes = result.get();
List<PhysicalNode> physicalNodeList = physicalNodes.getPhysicalNode();
UserId userId = virtualNetwork.getUserId();
List<VnPnMappingResult> vnPnMappingResults = userVnPnMapping.getVnPnMappingResult();
List<VirtualNode> virtualNodes = virtualNetwork.getVirtualNodes().getVirtualNode();
List<VirtualPort> virtualPorts;
PhysicalNode physicalNode;
PhysicalPort physicalPort;
VnPnMappingResult vnPnMappingResult;
for (VirtualNode virtualNode : virtualNodes) {
physicalNode =
virtualNodeMapping(virtualNetwork.getNetworkId(), virtualNode, physicalNodeList);
if (null == physicalNode) {
// If mapping failed, reset the user physical resources.
pnResourcesTracker.resetResource(userId);
throw new VNMappingException(
"Failed mapping for the virtual node "
+ virtualNode.getNodeId().getValue()
+ " in the virtual network "
+ virtualNetwork.getNetworkId().getValue());
}
// Keep physical resource.
pnResourcesTracker.addPhysicalNode(userId, physicalNode);
virtualPorts = virtualNode.getVirtualPort();
for (VirtualPort virtualPort : virtualPorts) {
if (VirtualPort.PortType.External == virtualPort.getPortType()) {
physicalPort =
virtualPortMapping(
virtualNetwork.getNetworkId(),
virtualNode.getNodeId(),
virtualPort,
physicalNode);
if (null == physicalPort) {
// If mapping failed, reset the user physical resources.
pnResourcesTracker.resetResource(userId);
throw new VNMappingException(
"Failed mapping for the virtual port "
+ virtualPort.getPortId().getValue()
+ " of the virtual node "
+ virtualNode.getNodeId().getValue()
+ " in the virtual network "
+ virtualNetwork.getNetworkId().getValue());
}
// Keep physical resource.
pnResourcesTracker.addPhysicalPort(userId, physicalPort);
vnPnMappingResult =
new VnPnMappingResultBuilder()
.setVirtualResourceId(new VirtualResourceId(UUID.randomUUID().toString()))
.setVirtualResourceType(VirtualResourceInstance.VirtualResourceType.Vport)
.setVirtualResourceEntityId(
new VirtualResourceEntityId(virtualPort.getPortId().getValue()))
.setParentVirtualResourceEntityId(
new VirtualResourceEntityId(virtualNode.getNodeId().getValue()))
.setPhysicalResourceId(new PhysicalResourceId(UUID.randomUUID().toString()))
.setPhysicalResourceType(PhysicalResourceInstance.PhysicalResourceType.Port)
.setPhysicalResourceEntityId(
new PhysicalResourceEntityId(physicalPort.getPortId().getValue()))
.setParentPhysicalResourceEntityId(
new PhysicalResourceEntityId(physicalNode.getNodeId().getValue()))
.build();
vnPnMappingResults.add(vnPnMappingResult);
}
}
vnPnMappingResult =
new VnPnMappingResultBuilder()
.setVirtualResourceId(new VirtualResourceId(UUID.randomUUID().toString()))
.setVirtualResourceType(VirtualResourceInstance.VirtualResourceType.Vnode)
.setVirtualResourceEntityId(
new VirtualResourceEntityId(virtualNode.getNodeId().getValue()))
.setPhysicalResourceId(new PhysicalResourceId(UUID.randomUUID().toString()))
.setPhysicalResourceType(PhysicalResourceInstance.PhysicalResourceType.Node)
.setPhysicalResourceEntityId(
new PhysicalResourceEntityId(physicalNode.getNodeId().getValue()))
.build();
vnPnMappingResults.add(vnPnMappingResult);
}
List<VirtualLink> virtualLinks = virtualNetwork.getVirtualLinks().getVirtualLink();
List<VirtualLink> newVirtualLinks = new ArrayList<VirtualLink>(virtualLinks.size());
PhysicalPath physicalPath;
VirtualLink newVirtualLink;
for (VirtualLink virtualLink : virtualLinks) {
physicalPath =
virtualLinkMapping(virtualNetwork.getNetworkId(), virtualLink, userVnPnMapping);
if (null == physicalPath) {
// If mapping failed, reset the user physical resources.
pnResourcesTracker.resetResource(userId);
throw new VNMappingException(
"Failed mapping for the virtual link "
+ virtualLink.getLinkId().getValue()
+ " in the virtual network "
+ virtualNetwork.getNetworkId().getValue());
}
// Keep physical resource.
pnResourcesTracker.addPhysicalPath(userId, physicalPath);
physicalPaths.add(physicalPath);
newVirtualLink =
new VirtualLinkBuilder(virtualLink)
.setMetric(physicalPath.getMetric())
.setDelay(physicalPath.getDelay())
.build();
newVirtualLinks.add(newVirtualLink);
vnPnMappingResult =
new VnPnMappingResultBuilder()
.setVirtualResourceId(new VirtualResourceId(UUID.randomUUID().toString()))
.setVirtualResourceType(VirtualResourceInstance.VirtualResourceType.Vlink)
.setVirtualResourceEntityId(
new VirtualResourceEntityId(virtualLink.getLinkId().getValue()))
.setPhysicalResourceId(new PhysicalResourceId(UUID.randomUUID().toString()))
.setPhysicalResourceType(PhysicalResourceInstance.PhysicalResourceType.Path)
.setPhysicalResourceEntityId(
new PhysicalResourceEntityId(physicalPath.getPathId().getValue()))
.build();
vnPnMappingResults.add(vnPnMappingResult);
}
virtualLinks.clear();
virtualLinks.addAll(newVirtualLinks);
return;
}