+++ /dev/null
-/*
- * Copyright © 2017 AT&T, Inc. and others. All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-package org.opendaylight.transportpce.pce;
-
-import com.google.common.base.Optional;
-
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Map;
-import java.util.concurrent.ExecutionException;
-import java.util.stream.Collectors;
-
-import org.opendaylight.controller.md.sal.binding.api.DataBroker;
-import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
-import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
-import org.opendaylight.transportpce.common.NetworkUtils;
-import org.opendaylight.transportpce.common.ResponseCodes;
-import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.pce.rev190624.PathComputationRequestInput;
-import org.opendaylight.yang.gen.v1.http.org.openroadm.network.topology.rev181130.Node1;
-import org.opendaylight.yang.gen.v1.http.org.openroadm.network.types.rev181130.OpenroadmNodeType;
-import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.rev180226.NetworkId;
-import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.rev180226.Networks;
-import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.rev180226.NodeId;
-import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.rev180226.networks.Network;
-import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.rev180226.networks.NetworkKey;
-import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.rev180226.networks.network.Node;
-import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.topology.rev180226.LinkId;
-import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.topology.rev180226.Network1;
-import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.topology.rev180226.networks.network.Link;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-public class PceCalculation {
- /* Logging. */
- private static final Logger LOG = LoggerFactory.getLogger(PceCalculation.class);
- private DataBroker dataBroker = null;
- ///////////// data parsed from Input/////////////////
- private PathComputationRequestInput input;
- private String anodeId = "";
- private String znodeId = "";
- private PceConstraints pceHardConstraints;
- private PceConstraints pceSoftConstraints;
- ///////////// Intermediate data/////////////////
- private List<PceLink> addLinks = new ArrayList<PceLink>();
- private List<PceLink> dropLinks = new ArrayList<PceLink>();
- private HashSet<NodeId> azSrgs = new HashSet<NodeId>();
- private PceNode aendPceNode = null;
- private PceNode zendPceNode = null;
- private List<Link> allLinks = null;
- private List<Node> allNodes = null;
- // this List serves graph calculation
- private Map<NodeId, PceNode> allPceNodes = new HashMap<NodeId, PceNode>();
- // this List serves calculation of ZtoA path descritopn
- // TODO maybe better solution is possible
- private Map<LinkId, PceLink> allPceLinks = new HashMap<LinkId, PceLink>();
- private PceResult returnStructure;
-
- public PceResult getReturnStructure() {
- return this.returnStructure;
- }
-
- public enum NodeConstraint {
- NONE, HARD_EXCLUDE, HARD_INCLUDE, HARD_DIVERSITY, SOFT_EXCLUDE, SOFT_INCLUDE, SOFT_DIVERSITY;
- }
-
- public PceCalculation(PathComputationRequestInput input, DataBroker dataBroker, PceConstraints pceHardConstraints,
- PceConstraints pceSoftConstraints, PceResult rc) {
- this.input = input;
- this.dataBroker = dataBroker;
- this.returnStructure = rc;
- this.pceHardConstraints = pceHardConstraints;
- this.pceSoftConstraints = pceSoftConstraints;
- parseInput();
- }
-
- // apply constraints to get applicable result
- public void calcPath() {
- LOG.info("In PceCalculation calcPath: ");
- if (!readMdSal()) {
- this.returnStructure.setRC(ResponseCodes.RESPONSE_FAILED);
- return;
- }
- if (!analyzeNw()) {
- this.returnStructure.setRC(ResponseCodes.RESPONSE_FAILED);
- return;
- }
- this.returnStructure.setRC(ResponseCodes.RESPONSE_OK);
- return;
- }
-
- private boolean parseInput() {
- this.anodeId = this.input.getServiceAEnd().getNodeId();
- this.znodeId = this.input.getServiceZEnd().getNodeId();
- LOG.info("parseInput: A and Z :[{}] and [{}]", this.anodeId, this.znodeId);
- this.returnStructure.setRate(this.input.getServiceAEnd().getServiceRate());
- return true;
- }
-
- private boolean readMdSal() {
- LOG.info("readMdSal: network {}", NetworkUtils.OVERLAY_NETWORK_ID);
- InstanceIdentifier<Network> nwInstanceIdentifier = InstanceIdentifier.builder(Networks.class)
- .child(Network.class, new NetworkKey(new NetworkId(NetworkUtils.OVERLAY_NETWORK_ID))).build();
- ReadOnlyTransaction readOnlyTransaction = this.dataBroker.newReadOnlyTransaction();
- Network nw = null;
- try {
- Optional<Network> nwOptional =
- readOnlyTransaction.read(LogicalDatastoreType.CONFIGURATION, nwInstanceIdentifier).get();
- if (nwOptional.isPresent()) {
- nw = nwOptional.get();
- LOG.debug("readMdSal: network nodes: nwOptional.isPresent = true {}", nw.toString());
- }
- } catch (ExecutionException | InterruptedException e) {
- LOG.error("readMdSal: Error reading topology {}", nwInstanceIdentifier);
- readOnlyTransaction.close();
- this.returnStructure.setRC(ResponseCodes.RESPONSE_FAILED);
- throw new RuntimeException(
- "readMdSal: Error reading from operational store, topology : " + nwInstanceIdentifier + " :" + e);
- }
- readOnlyTransaction.close();
- if (nw == null) {
- LOG.error("readMdSal: network is null: {}", nwInstanceIdentifier);
- return false;
- }
- this.allNodes = nw.getNode().stream()
- .sorted((node1, node2) -> node1.getNodeId().getValue().compareTo(node2.getNodeId().getValue()))
- .collect(Collectors.toList());
- Network1 nw1 = nw.augmentation(Network1.class);
- this.allLinks = nw1.getLink();
- if ((this.allNodes == null) || this.allNodes.isEmpty()) {
- LOG.error("readMdSal: no nodes ");
- return false;
- }
- LOG.info("readMdSal: network nodes: {} nodes added", this.allNodes.size());
- if ((this.allLinks == null) || this.allLinks.isEmpty()) {
- LOG.error("readMdSal: no links ");
- return false;
- }
- LOG.info("readMdSal: network links: {} links added", this.allLinks.size());
- return true;
- }
-
- private boolean analyzeNw() {
- LOG.debug("analyzeNw: allNodes size {}, allLinks size {}", this.allNodes.size(), this.allLinks.size());
- for (Node node : this.allNodes) {
- validateNode(node);
- }
- LOG.debug("analyzeNw: allPceNodes size {} : {}", this.allPceNodes.size(), this.allPceNodes.toString());
- if ((this.aendPceNode == null) || (this.zendPceNode == null)) {
- LOG.error("analyzeNw: Error in reading nodes: A or Z do not present in the network");
- return false;
- }
- for (Link link : this.allLinks) {
- validateLink(link);
- }
- LOG.debug("analyzeNw: AddLinks size {}, DropLinks size {}", this.addLinks.size(), this.dropLinks.size());
- // debug prints
- LOG.info("analyzeNw: AZSrgs size = {}", this.azSrgs.size());
- for (NodeId srg : this.azSrgs) {
- LOG.info("analyzeNw: A/Z Srgs SRG = {}", srg.getValue());
- }
- // debug prints
- for (PceLink link : this.addLinks) {
- filterAddLinks(link);
- }
- for (PceLink link : this.dropLinks) {
- filterDropLinks(link);
- }
- LOG.info("analyzeNw: allPceNodes size {}, allPceLinks size {}", this.allPceNodes.size(), this.allPceLinks
- .size());
- return true;
- }
-
- private boolean filterAddLinks(PceLink pcelink) {
- NodeId nodeId = pcelink.getSourceId();
- if (this.azSrgs.contains(nodeId)) {
- this.allPceLinks.put(pcelink.getLinkId(), pcelink);
- this.allPceNodes.get(nodeId).addOutgoingLink(pcelink);
- LOG.info("analyzeNw: Add_LINK added to source and to allPceLinks {}", pcelink.getLinkId().toString());
- return true;
- }
- // remove the SRG from PceNodes, as it is not directly connected to A/Z
- this.allPceNodes.remove(nodeId);
- LOG.debug("analyzeNw: SRG removed {}", nodeId.getValue());
- return false;
- }
-
- private boolean filterDropLinks(PceLink pcelink) {
- NodeId nodeId = pcelink.getDestId();
- if (this.azSrgs.contains(nodeId)) {
- this.allPceLinks.put(pcelink.getLinkId(), pcelink);
- this.allPceNodes.get(nodeId).addOutgoingLink(pcelink);
- LOG.info("analyzeNw: Drop_LINK added to dest and to allPceLinks {}", pcelink.getLinkId().toString());
- return true;
- }
- // remove the SRG from PceNodes, as it is not directly connected to A/Z
- this.allPceNodes.remove(pcelink.getDestId());
- LOG.debug("analyzeNw: SRG removed {}", nodeId.getValue());
- return false;
- }
-
- private boolean validateLink(Link link) {
- LOG.info("validateLink: link {} ", link.toString());
- NodeId sourceId = link.getSource().getSourceNode();
- NodeId destId = link.getDestination().getDestNode();
- PceNode source = this.allPceNodes.get(sourceId);
- PceNode dest = this.allPceNodes.get(destId);
- if (source == null) {
- LOG.warn("validateLink: source node is rejected by node validation - {}", link.getSource().getSourceNode()
- .getValue());
- return false;
- }
- if (dest == null) {
- LOG.warn("validateLink: dest node is rejected by node validation - {}", link.getDestination().getDestNode()
- .getValue());
- return false;
- }
- PceLink pcelink = new PceLink(link);
- if (!pcelink.isValid()) {
- LOG.error(" validateLink: Link is ignored due errors in network data ");
- return false;
- }
- LinkId linkId = pcelink.getLinkId();
- switch (pcelink.getLinkType()) {
- case ROADMTOROADM :
- this.allPceLinks.put(linkId, pcelink);
- source.addOutgoingLink(pcelink);
- LOG.info("validateLink: ROADMTOROADM-LINK added to allPceLinks {}", pcelink.toString());
- break;
- case EXPRESSLINK :
- this.allPceLinks.put(linkId, pcelink);
- source.addOutgoingLink(pcelink);
- LOG.info("validateLink: EXPRESS-LINK added to allPceLinks {}", pcelink.toString());
- break;
- case ADDLINK :
- pcelink.setClient(source.getRdmSrgClient(pcelink.getSourceTP().toString(), true));
- this.addLinks.add(pcelink);
- LOG.info("validateLink: ADD-LINK saved {}", pcelink.toString());
- break;
- case DROPLINK :
- pcelink.setClient(dest.getRdmSrgClient(pcelink.getDestTP().toString(), false));
- this.dropLinks.add(pcelink);
- LOG.info("validateLink: DROP-LINK saved {}", pcelink.toString());
- break;
- case XPONDERINPUT :
- this.azSrgs.add(sourceId);
- // store separately all SRG links directly connected to A/Z
- if (!dest.checkTP(pcelink.getDestTP().toString())) {
- LOG.debug("validateLink: XPONDER-INPUT is rejected as NW port is busy - {} ", pcelink.toString());
- return false;
- }
- pcelink.setClient(dest.getXpdrClient(pcelink.getDestTP().toString()));
- this.allPceLinks.put(linkId, pcelink);
- source.addOutgoingLink(pcelink);
- LOG.info("validateLink: XPONDER-INPUT link added to allPceLinks {}", pcelink.toString());
- break;
- case XPONDEROUTPUT :
- // does it mean XPONDER==>>SRG ?
- this.azSrgs.add(destId);
- // store separately all SRG links directly connected to A/Z
- if (!source.checkTP(pcelink.getSourceTP().toString())) {
- LOG.debug("validateLink: XPONDER-OUTPUT is rejected as NW port is busy - {} ", pcelink.toString());
- return false;
- }
- pcelink.setClient(source.getXpdrClient(pcelink.getSourceTP().toString()));
- this.allPceLinks.put(linkId, pcelink);
- source.addOutgoingLink(pcelink);
- LOG.info("validateLink: XPONDER-OUTPUT link added to allPceLinks {}", pcelink.toString());
- break;
- default:
- LOG.warn("validateLink: link type is not supported {}", pcelink.toString());
- }
- return true;
- }
-
- private boolean validateNode(Node node) {
- String supNodeId = "";
- OpenroadmNodeType nodeType = null;
- NodeId nodeId = null;
- if (node == null) {
- LOG.error("validateNode: node is null, ignored ");
- return false;
- }
- try {
- // TODO: supporting IDs exist as a List. this code takes just the first element
- nodeId = node.getNodeId();
- supNodeId = node.getSupportingNode().get(0).getNodeRef().getValue();
- if (supNodeId.equals("")) {
- LOG.error("validateNode: Supporting node for node: [{}]. Node is ignored", nodeId.getValue());
- return false;
- }
- // extract node type
- Node1 node1 = node.augmentation(Node1.class);
- if (node1 == null) {
- LOG.error("validateNode: no Node1 (type) Augmentation for node: [{}]. Node is ignored", nodeId
- .getValue());
- return false;
- }
- nodeType = node1.getNodeType();
- /** Catch exception 'RuntimeException' is not allowed. [IllegalCatch]. */
- } catch (NullPointerException e) {
- LOG.error("validateNode: Error reading supporting node or node type for node '{}'", nodeId, e);
- return false;
- }
- if (nodeType == OpenroadmNodeType.XPONDER) {
- // Detect A and Z
- if (supNodeId.equals(this.anodeId) || (supNodeId.equals(this.znodeId))) {
- LOG.info("validateNode: A or Z node detected == {}", node.getNodeId().getValue());
- } else {
- LOG.warn("validateNode: XPONDER is ignored == {}", node.getNodeId().getValue());
- return false;
- }
- }
- switch (validateNodeConstraints(nodeId.getValue(), supNodeId)) {
- case HARD_EXCLUDE :
- LOG.info("validateNode: constraints : node is ignored == {}", nodeId.getValue());
- return false;
- default:
- break;
- }
- PceNode pceNode = new PceNode(node, nodeType, nodeId);
- if (!pceNode.isValid()) {
- LOG.error(" validateNode: Node is ignored due errors in network data ");
- return false;
- }
- if (supNodeId.equals(this.anodeId)) {
- if (this.aendPceNode == null) {
- if (endPceNode(nodeType, nodeId, pceNode, true)) {
- if (!pceNode.isValid()) {
- LOG.error("validateNode: There are no available wavelengths in node {}", nodeId.getValue());
- return false;
- }
- this.aendPceNode = pceNode;
- }
- } else {
- LOG.warn("aendPceNode already gets: {}", this.aendPceNode);
- }
- }
- if (supNodeId.equals(this.znodeId)) {
- if (this.zendPceNode == null) {
- if (endPceNode(nodeType, nodeId, pceNode, false)) {
- if (!pceNode.isValid()) {
- LOG.error("validateNode: There are no available wavelengths in node {}", nodeId.getValue());
- return false;
- }
- this.zendPceNode = pceNode;
- }
- } else {
- LOG.warn("zendPceNode already gets: {}", this.zendPceNode);
- }
- }
- pceNode.initWLlist();
- if (!pceNode.isValid()) {
- LOG.error("validateNode: There are no available wavelengths in node {}", nodeId.getValue());
- return false;
- }
- this.allPceNodes.put(nodeId, pceNode);
- LOG.debug("validateNode: node is saved {}", nodeId.getValue());
- return true;
- }
-
- private Boolean endPceNode(OpenroadmNodeType openroadmNodeType, NodeId nodeId, PceNode pceNode, Boolean aend) {
- Boolean add = true;
- switch (openroadmNodeType) {
- case SRG :
- pceNode.initSrgTps();
- this.azSrgs.add(nodeId);
- break;
- case XPONDER :
- pceNode.initXndrTps();
- break;
- default:
- add = false;
- LOG.warn("endPceNode: Node {} is not SRG or XPONDER !", nodeId);
- break;
- }
- return add;
- }
-
- private NodeConstraint validateNodeConstraints(String nodeId, String supNodeId) {
- if (this.pceHardConstraints.getExcludeNodes().contains(nodeId)) {
- return NodeConstraint.HARD_EXCLUDE;
- }
- if (this.pceHardConstraints.getExcludeNodes().contains(supNodeId)) {
- return NodeConstraint.HARD_EXCLUDE;
- }
- if (this.pceHardConstraints.getIncludeNodes().contains(nodeId)) {
- return NodeConstraint.HARD_INCLUDE;
- }
- if (this.pceHardConstraints.getIncludeNodes().contains(supNodeId)) {
- return NodeConstraint.HARD_INCLUDE;
- }
- return NodeConstraint.NONE;
- }
-
- public PceNode getaPceNode() {
- return this.aendPceNode;
- }
-
- public PceNode getzPceNode() {
- return this.zendPceNode;
- }
-
- public Map<NodeId, PceNode> getAllPceNodes() {
- return this.allPceNodes;
- }
-
- public Map<LinkId, PceLink> getAllPceLinks() {
- return this.allPceLinks;
- }
-}
Code Review / transportpce.git / blobdiff