Refactor code after Chlorine Bump
[transportpce.git] / pce / src / main / java / org / opendaylight / transportpce / pce / networkanalyzer / PceCalculation.java
index 5fad6c02c604b5c5ef767b6bf7c696ce1c9c357e..c419727d212e99d9ca8817a05ef86742c8927fc4 100644 (file)
@@ -8,14 +8,13 @@
 
 package org.opendaylight.transportpce.pce.networkanalyzer;
 
+import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import java.math.BigDecimal;
 import java.util.ArrayList;
 import java.util.HashMap;
-import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-import java.util.Set;
 import java.util.concurrent.ExecutionException;
 import java.util.stream.Collectors;
 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
@@ -27,17 +26,17 @@ import org.opendaylight.transportpce.common.mapping.MappingUtils;
 import org.opendaylight.transportpce.common.mapping.MappingUtilsImpl;
 import org.opendaylight.transportpce.common.mapping.PortMapping;
 import org.opendaylight.transportpce.common.network.NetworkTransactionService;
+import org.opendaylight.transportpce.common.service.ServiceTypes;
+import org.opendaylight.transportpce.pce.PceComplianceCheck;
 import org.opendaylight.transportpce.pce.constraints.PceConstraints;
-import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.pce.rev200128.PathComputationRequestInput;
-import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.portmapping.rev210426.mapping.Mapping;
-import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.portmapping.rev210426.mc.capabilities.McCapabilities;
-import org.opendaylight.yang.gen.v1.http.org.openroadm.common.network.rev200529.Link1;
-import org.opendaylight.yang.gen.v1.http.org.openroadm.common.network.rev200529.Node1;
+import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.pce.rev220615.PathComputationRequestInput;
+import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.portmapping.rev220316.mc.capabilities.McCapabilities;
+import org.opendaylight.yang.gen.v1.http.org.openroadm.common.network.rev211210.Link1;
+import org.opendaylight.yang.gen.v1.http.org.openroadm.common.network.rev211210.Node1;
 import org.opendaylight.yang.gen.v1.http.org.openroadm.common.state.types.rev191129.State;
 import org.opendaylight.yang.gen.v1.http.org.openroadm.device.types.rev191129.NodeTypes;
-import org.opendaylight.yang.gen.v1.http.org.openroadm.device.types.rev191129.PortQual;
-import org.opendaylight.yang.gen.v1.http.org.openroadm.network.types.rev200529.OpenroadmLinkType;
-import org.opendaylight.yang.gen.v1.http.org.openroadm.network.types.rev200529.OpenroadmNodeType;
+import org.opendaylight.yang.gen.v1.http.org.openroadm.network.types.rev211210.OpenroadmLinkType;
+import org.opendaylight.yang.gen.v1.http.org.openroadm.network.types.rev211210.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;
@@ -48,13 +47,14 @@ import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.top
 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.opendaylight.yangtools.yang.common.Uint32;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 public class PceCalculation {
     /* Logging. */
     private static final Logger LOG = LoggerFactory.getLogger(PceCalculation.class);
-    private NetworkTransactionService networkTransactionService = null;
+    private NetworkTransactionService networkTransactionService;
 
     ///////////// data parsed from Input/////////////////
     private PathComputationRequestInput input;
@@ -63,14 +63,14 @@ public class PceCalculation {
     private String serviceFormatA = "";
     private String serviceFormatZ = "";
     private String serviceType = "";
-    private Long serviceRate = 0L;
+    private Uint32 serviceRate = Uint32.valueOf(0);
 
     private PceConstraints pceHardConstraints;
 
     ///////////// Intermediate data/////////////////
     private List<PceLink> addLinks = new ArrayList<>();
     private List<PceLink> dropLinks = new ArrayList<>();
-    private HashSet<NodeId> azSrgs = new HashSet<>();
+    private List<NodeId> azSrgs = new ArrayList<>();
 
     private PceNode aendPceNode = null;
     private PceNode zendPceNode = null;
@@ -83,7 +83,7 @@ public class PceCalculation {
     // this List serves calculation of ZtoA path description
     // TODO maybe better solution is possible
     private Map<LinkId, PceLink> allPceLinks = new HashMap<>();
-    private Set<LinkId> linksToExclude = new HashSet<>();
+    private List<LinkId> linksToExclude = new ArrayList<>();
     private PceResult returnStructure;
     private PortMapping portMapping;
 
@@ -108,7 +108,7 @@ public class PceCalculation {
 
     public void retrievePceNetwork() {
 
-        LOG.info("In PceCalculation retrieveNetwork: ");
+        LOG.debug("In PceCalculation retrieveNetwork");
 
         if (!readMdSal()) {
             returnStructure.setRC(ResponseCodes.RESPONSE_FAILED);
@@ -123,102 +123,69 @@ public class PceCalculation {
         printNodesInfo(allPceNodes);
 
         returnStructure.setRC(ResponseCodes.RESPONSE_OK);
-        return;
     }
 
     private boolean parseInput() {
-        if (input.getServiceAEnd().getServiceFormat() == null || input.getServiceZEnd().getServiceFormat() == null
-            || input.getServiceAEnd().getServiceRate() == null) {
+        if (!PceComplianceCheck.checkString(input.getServiceAEnd().getServiceFormat().getName())
+                || !PceComplianceCheck.checkString(input.getServiceZEnd().getServiceFormat().getName())
+                || !PceComplianceCheck.checkString(input.getServiceAEnd().getServiceRate().toString())) {
             LOG.error("Service Format and Service Rate are required for a path calculation");
             return false;
         }
         serviceFormatA = input.getServiceAEnd().getServiceFormat().getName();
         serviceFormatZ = input.getServiceZEnd().getServiceFormat().getName();
-        serviceRate = input.getServiceAEnd().getServiceRate().toJava();
-
-        LOG.info("parseInput: A and Z :[{}] and [{}]", anodeId, znodeId);
-
-        setServiceType();
-        if (StringConstants.SERVICE_TYPE_ODU4.equals(serviceType)
-                || StringConstants.SERVICE_TYPE_ODUC4.equals(serviceType)
-                || StringConstants.SERVICE_TYPE_100GE_M.equals(serviceType)
-                || StringConstants.SERVICE_TYPE_10GE.equals(serviceType)
-                || StringConstants.SERVICE_TYPE_1GE.equals(serviceType)) {
-            anodeId = input.getServiceAEnd().getTxDirection().getPort().getPortDeviceName();
-            znodeId = input.getServiceZEnd().getTxDirection().getPort().getPortDeviceName();
-        } else {
-            anodeId = input.getServiceAEnd().getNodeId();
-            znodeId = input.getServiceZEnd().getNodeId();
-        }
+        serviceRate = input.getServiceAEnd().getServiceRate();
+        serviceType = ServiceTypes.getServiceType(
+            serviceFormatA,
+            serviceRate,
+            NodeTypes.Xpdr.equals(portMapping.getNode(input.getServiceAEnd().getNodeId()).getNodeInfo().getNodeType())
+                    && checkAendInputTxPortName()
+                ? portMapping.getMapping(
+                    input.getServiceAEnd().getNodeId(),
+                    input.getServiceAEnd().getTxDirection().getPort().getPortName())
+                : null);
+
+        LOG.debug("parseInput: A and Z :[{}] and [{}]", anodeId, znodeId);
+
+        getAZnodeId();
 
         returnStructure.setRate(input.getServiceAEnd().getServiceRate().toJava());
         returnStructure.setServiceFormat(input.getServiceAEnd().getServiceFormat());
         return true;
     }
 
-    private void setServiceType() {
-        if ("Ethernet".equals(serviceFormatA)) {
-            switch (serviceRate.intValue()) {
-                case 1:
-                    serviceType = StringConstants.SERVICE_TYPE_1GE;
-                    break;
-                case 10:
-                    serviceType = StringConstants.SERVICE_TYPE_10GE;
-                    break;
-                case 100:
-                    serviceType = StringConstants.SERVICE_TYPE_100GE_T;
-                    if (NodeTypes.Xpdr.equals(portMapping.getNode(input.getServiceAEnd().getNodeId())
-                        .getNodeInfo().getNodeType())) {
-                        if (input.getServiceAEnd().getTxDirection() != null
-                            && input.getServiceAEnd().getTxDirection().getPort() != null
-                            && input.getServiceAEnd().getTxDirection().getPort().getPortName() != null) {
-                            String lcp = input.getServiceAEnd().getTxDirection().getPort().getPortName();
-                            if (portMapping.getMapping(input.getServiceAEnd().getNodeId(), lcp) != null) {
-                                Mapping mapping = portMapping.getMapping(input.getServiceAEnd().getNodeId(), lcp);
-                                if (PortQual.SwitchClient.getName().equals(mapping.getPortQual())) {
-                                    serviceType = StringConstants.SERVICE_TYPE_100GE_M;
-                                }
-                            }
-                        }
-                    }
-                    break;
-                case 400:
-                    serviceType = StringConstants.SERVICE_TYPE_400GE;
-                    break;
-                default:
-                    LOG.warn("Invalid service-rate {}", serviceRate);
-                    break;
-            }
-        }
-        if ("OC".equals(serviceFormatA) && Long.valueOf(100L).equals(serviceRate)) {
-            serviceType = StringConstants.SERVICE_TYPE_100GE_T;
-        }
-        if ("OTU".equals(serviceFormatA)) {
-            switch (serviceRate.intValue()) {
-                case 100:
-                    serviceType = StringConstants.SERVICE_TYPE_OTU4;
-                    break;
-                case 400:
-                    serviceType = StringConstants.SERVICE_TYPE_OTUC4;
-                    break;
-                default:
-                    LOG.warn("Invalid service-rate {}", serviceRate);
-                    break;
-            }
-        }
-        if ("ODU".equals(serviceFormatA)) {
-            switch (serviceRate.intValue()) {
-                case 100:
-                    serviceType = StringConstants.SERVICE_TYPE_ODU4;
-                    break;
-                case 400:
-                    serviceType = StringConstants.SERVICE_TYPE_ODUC4;
-                    break;
-                default:
-                    LOG.warn("Invalid service-rate {}", serviceRate);
-                    break;
-            }
-        }
+    private boolean checkAendInputTxPortName() {
+        return checkAendInputTxPort()
+            && input.getServiceAEnd().getTxDirection().getPort().getPortName() != null;
+    }
+
+    private boolean checkAendInputTxPortDeviceName() {
+        return checkAendInputTxPort()
+            && input.getServiceAEnd().getTxDirection().getPort().getPortDeviceName() != null;
+    }
+
+    private boolean checkAendInputTxPort() {
+        return input.getServiceAEnd() != null
+            && input.getServiceAEnd().getTxDirection() != null
+            && input.getServiceAEnd().getTxDirection().getPort() != null;
+    }
+
+    private boolean checkZendInputTxPortDeviceName() {
+        return input.getServiceZEnd() != null
+            && input.getServiceZEnd().getTxDirection() != null
+            && input.getServiceZEnd().getTxDirection().getPort() != null
+            && input.getServiceZEnd().getTxDirection().getPort().getPortDeviceName() != null;
+    }
+
+    private void getAZnodeId() {
+        anodeId =
+            checkAendInputTxPortDeviceName()
+                ? input.getServiceAEnd().getTxDirection().getPort().getPortDeviceName()
+                : input.getServiceAEnd().getNodeId();
+        znodeId =
+            checkZendInputTxPortDeviceName()
+                ? input.getServiceZEnd().getTxDirection().getPort().getPortDeviceName()
+                : input.getServiceZEnd().getNodeId();
     }
 
     private boolean readMdSal() {
@@ -227,17 +194,22 @@ public class PceCalculation {
             case StringConstants.SERVICE_TYPE_100GE_T:
             case StringConstants.SERVICE_TYPE_400GE:
             case StringConstants.SERVICE_TYPE_OTU4:
+            case StringConstants.SERVICE_TYPE_OTUC2:
+            case StringConstants.SERVICE_TYPE_OTUC3:
             case StringConstants.SERVICE_TYPE_OTUC4:
-                LOG.info("readMdSal: network {}", NetworkUtils.OVERLAY_NETWORK_ID);
+                LOG.debug("readMdSal: network {}", NetworkUtils.OVERLAY_NETWORK_ID);
                 nwInstanceIdentifier = InstanceIdentifier.builder(Networks.class)
                     .child(Network.class, new NetworkKey(new NetworkId(NetworkUtils.OVERLAY_NETWORK_ID))).build();
                 break;
             case StringConstants.SERVICE_TYPE_100GE_M:
+            case StringConstants.SERVICE_TYPE_100GE_S:
             case StringConstants.SERVICE_TYPE_ODU4:
+            case StringConstants.SERVICE_TYPE_ODUC2:
+            case StringConstants.SERVICE_TYPE_ODUC3:
             case StringConstants.SERVICE_TYPE_ODUC4:
             case StringConstants.SERVICE_TYPE_10GE:
             case StringConstants.SERVICE_TYPE_1GE:
-                LOG.info("readMdSal: network {}", NetworkUtils.OTN_NETWORK_ID);
+                LOG.debug("readMdSal: network {}", NetworkUtils.OTN_NETWORK_ID);
                 nwInstanceIdentifier = InstanceIdentifier.builder(Networks.class)
                     .child(Network.class, new NetworkKey(new NetworkId(NetworkUtils.OTN_NETWORK_ID))).build();
                 break;
@@ -247,36 +219,36 @@ public class PceCalculation {
                 break;
         }
 
-        if (readTopology(nwInstanceIdentifier) != null) {
-            allNodes = readTopology(nwInstanceIdentifier).nonnullNode().values().stream().sorted((n1, n2)
-                -> n1.getNodeId().getValue().compareTo(n2.getNodeId().getValue())).collect(Collectors.toList());
-            Network1 nw1 = readTopology(nwInstanceIdentifier).augmentation(Network1.class);
-            if (nw1 != null) {
-                allLinks = nw1.nonnullLink().values().stream().sorted((l1, l2)
-                    -> l1.getSource().getSourceTp().toString().compareTo(l2.getSource().getSourceTp().toString()))
-                        .collect(Collectors.toList());
-            } else {
-                LOG.warn("no otn links in otn-topology");
-            }
-            if (allNodes == null || allNodes.isEmpty()) {
-                LOG.error("readMdSal: no nodes ");
-                return false;
-            }
-            LOG.info("readMdSal: network nodes: {} nodes added", allNodes.size());
-            LOG.debug("readMdSal: network nodes: {} nodes added", allNodes);
-
-            if (allLinks == null || allLinks.isEmpty()) {
-                LOG.error("readMdSal: no links ");
-                return false;
-            }
-            LOG.info("readMdSal: network links: {} links added", allLinks.size());
-            LOG.debug("readMdSal: network links: {} links added", allLinks);
+        if (readTopology(nwInstanceIdentifier) == null) {
+            LOG.error("readMdSal: network is null: {}", nwInstanceIdentifier);
+            return false;
+        }
 
-            return true;
+        allNodes = readTopology(nwInstanceIdentifier).nonnullNode().values().stream().sorted((n1, n2)
+            -> n1.getNodeId().getValue().compareTo(n2.getNodeId().getValue())).collect(Collectors.toList());
+        Network1 nw1 = readTopology(nwInstanceIdentifier).augmentation(Network1.class);
+        if (nw1 == null) {
+            LOG.warn("no otn links in otn-topology");
         } else {
-            LOG.error("readMdSal: network is null: {}", nwInstanceIdentifier);
+            allLinks = nw1.nonnullLink().values().stream().sorted((l1, l2)
+                -> l1.getSource().getSourceTp().getValue().compareTo(l2.getSource().getSourceTp().getValue()))
+                    .collect(Collectors.toList());
+        }
+        if (allNodes == null || allNodes.isEmpty()) {
+            LOG.error("readMdSal: no nodes ");
             return false;
         }
+        LOG.info("readMdSal: network nodes: {} nodes added", allNodes.size());
+        LOG.debug("readMdSal: network nodes: {} nodes added", allNodes);
+
+        if (allLinks == null || allLinks.isEmpty()) {
+            LOG.error("readMdSal: no links ");
+            return false;
+        }
+        LOG.info("readMdSal: network links: {} links added", allLinks.size());
+        LOG.debug("readMdSal: network links: {} links added", allLinks);
+
+        return true;
     }
 
     private Network readTopology(InstanceIdentifier<Network> nwInstanceIdentifier) {
@@ -293,8 +265,6 @@ public class PceCalculation {
             LOG.error("readMdSal: Error reading topology {}", nwInstanceIdentifier);
             networkTransactionService.close();
             returnStructure.setRC(ResponseCodes.RESPONSE_FAILED);
-            throw new RuntimeException(
-                "readMdSal: Error reading from operational store, topology : " + nwInstanceIdentifier + " :" + e);
         }
         return nw;
     }
@@ -302,56 +272,60 @@ public class PceCalculation {
     private boolean analyzeNw() {
 
         LOG.debug("analyzeNw: allNodes size {}, allLinks size {}", allNodes.size(), allLinks.size());
+        switch (serviceType) {
+            case StringConstants.SERVICE_TYPE_100GE_T:
+            case  StringConstants.SERVICE_TYPE_OTU4:
+            case  StringConstants.SERVICE_TYPE_400GE:
+            case StringConstants.SERVICE_TYPE_OTUC2:
+            case StringConstants.SERVICE_TYPE_OTUC3:
+            case  StringConstants.SERVICE_TYPE_OTUC4:
+                // 100GE service and OTU4 service are handled at the openroadm-topology layer
+                for (Node node : allNodes) {
+                    validateNode(node);
+                }
 
-        if (StringConstants.SERVICE_TYPE_100GE_T.equals(serviceType)
-                || StringConstants.SERVICE_TYPE_OTU4.equals(serviceType)
-                || StringConstants.SERVICE_TYPE_400GE.equals(serviceType)
-                || StringConstants.SERVICE_TYPE_OTUC4.equals(serviceType)) {
-            // 100GE service and OTU4 service are handled at the openroadm-topology layer
-            for (Node node : allNodes) {
-                validateNode(node);
-            }
-
-            LOG.debug("analyzeNw: allPceNodes size {}", allPceNodes.size());
+                LOG.debug("analyzeNw: allPceNodes size {}", allPceNodes.size());
 
-            if (aendPceNode == null || zendPceNode == null) {
-                LOG.error("analyzeNw: Error in reading nodes: A or Z do not present in the network");
-                return false;
-            }
-            for (Link link : allLinks) {
-                validateLink(link);
-            }
-            // debug prints
-            LOG.debug("analyzeNw: addLinks size {}, dropLinks size {}", addLinks.size(), dropLinks.size());
-            // debug prints
-            LOG.debug("analyzeNw: azSrgs size = {}", azSrgs.size());
-            for (NodeId srg : azSrgs) {
-                LOG.debug("analyzeNw: A/Z Srgs SRG = {}", srg.getValue());
-            }
-            // debug prints
-            for (PceLink link : addLinks) {
-                filteraddLinks(link);
-            }
-            for (PceLink link : dropLinks) {
-                filterdropLinks(link);
-            }
+                if (aendPceNode == null || zendPceNode == null) {
+                    LOG.error("analyzeNw: Error in reading nodes: A or Z do not present in the network");
+                    return false;
+                }
+                for (Link link : allLinks) {
+                    validateLink(link);
+                }
+                // debug prints
+                LOG.debug("analyzeNw: addLinks size {}, dropLinks size {}", addLinks.size(), dropLinks.size());
+                // debug prints
+                LOG.debug("analyzeNw: azSrgs size = {}", azSrgs.size());
+                for (NodeId srg : azSrgs) {
+                    LOG.debug("analyzeNw: A/Z Srgs SRG = {}", srg.getValue());
+                }
+                // debug prints
+                for (PceLink link : addLinks) {
+                    filteraddLinks(link);
+                }
+                for (PceLink link : dropLinks) {
+                    filterdropLinks(link);
+                }
+                break;
 
-        } else {
-            // ODU4, 10GE/ODU2e or 1GE/ODU0 services are handled at openroadm-otn layer
+            default:
+                // ODU4, 10GE/ODU2e or 1GE/ODU0 services are handled at openroadm-otn layer
 
-            for (Node node : allNodes) {
-                validateOtnNode(node);
-            }
+                for (Node node : allNodes) {
+                    validateOtnNode(node);
+                }
 
-            LOG.info("analyzeNw: allPceNodes {}", allPceNodes);
+                LOG.info("analyzeNw: allPceNodes {}", allPceNodes);
 
-            if (aendPceNode == null || zendPceNode == null) {
-                LOG.error("analyzeNw: Error in reading nodes: A or Z do not present in the network");
-                return false;
-            }
-            for (Link link : allLinks) {
-                validateLink(link);
-            }
+                if (aendPceNode == null || zendPceNode == null) {
+                    LOG.error("analyzeNw: Error in reading nodes: A or Z do not present in the network");
+                    return false;
+                }
+                for (Link link : allLinks) {
+                    validateLink(link);
+                }
+                break;
         }
 
         LOG.info("analyzeNw: allPceNodes size {}, allPceLinks size {}", allPceNodes.size(), allPceLinks.size());
@@ -403,7 +377,7 @@ public class PceCalculation {
     }
 
     private boolean validateLink(Link link) {
-        LOG.info("validateLink: link {} ", link);
+        LOG.debug("validateLink: link {} ", link);
 
         NodeId sourceId = link.getSource().getSourceNode();
         NodeId destId = link.getDestination().getDestNode();
@@ -431,12 +405,17 @@ public class PceCalculation {
         switch (serviceType) {
             case StringConstants.SERVICE_TYPE_100GE_T:
             case StringConstants.SERVICE_TYPE_OTU4:
+            case StringConstants.SERVICE_TYPE_OTUC2:
+            case StringConstants.SERVICE_TYPE_OTUC3:
             case StringConstants.SERVICE_TYPE_OTUC4:
             case StringConstants.SERVICE_TYPE_400GE:
                 return processPceLink(link, sourceId, destId, source, dest);
             case StringConstants.SERVICE_TYPE_ODU4:
             case StringConstants.SERVICE_TYPE_10GE:
             case StringConstants.SERVICE_TYPE_100GE_M:
+            case StringConstants.SERVICE_TYPE_100GE_S:
+            case StringConstants.SERVICE_TYPE_ODUC2:
+            case StringConstants.SERVICE_TYPE_ODUC3:
             case StringConstants.SERVICE_TYPE_ODUC4:
             case StringConstants.SERVICE_TYPE_1GE:
                 return processPceOtnLink(link, source, dest);
@@ -467,33 +446,50 @@ public class PceCalculation {
             deviceNodeId = node.getNodeId().getValue();
         }
 
-        LOG.info("Device node id {} for {}", deviceNodeId, node);
+        LOG.debug("Device node id {} for {}", deviceNodeId, node);
         PceOpticalNode pceNode = new PceOpticalNode(deviceNodeId, this.serviceType, portMapping, node, nodeType,
-            mappingUtils.getOpenRoadmVersion(deviceNodeId), getSlotWidthGranularity(deviceNodeId, node.getNodeId()));
+            mappingUtils.getOpenRoadmVersion(deviceNodeId), getSlotWidthGranularity(deviceNodeId, node.getNodeId()),
+            getCentralFreqGranularity(deviceNodeId, node.getNodeId()));
         pceNode.validateAZxponder(anodeId, znodeId, input.getServiceAEnd().getServiceFormat());
         pceNode.initFrequenciesBitSet();
 
         if (!pceNode.isValid()) {
-            LOG.warn(" validateNode: Node is ignored");
+            LOG.debug(" validateNode: Node {} is ignored", node.getNodeId().getValue());
             return;
         }
         if (validateNodeConstraints(pceNode).equals(ConstraintTypes.HARD_EXCLUDE)) {
             return;
         }
-        if (endPceNode(nodeType, pceNode.getNodeId(), pceNode) && this.aendPceNode == null
-            && isAZendPceNode(this.serviceFormatA, pceNode, anodeId, "A")) {
-            this.aendPceNode = pceNode;
-        }
-        if (endPceNode(nodeType, pceNode.getNodeId(), pceNode) && this.zendPceNode == null
-            && isAZendPceNode(this.serviceFormatZ, pceNode, znodeId, "Z")) {
-            this.zendPceNode = pceNode;
+
+        if (endPceNode(nodeType, pceNode.getNodeId(), pceNode)) {
+            if (this.aendPceNode == null && isAZendPceNode(this.serviceFormatA, pceNode, anodeId, "A")) {
+                // Added to ensure A-node has a addlink in the topology
+                List<Link> links = this.allLinks.stream()
+                    .filter(x -> x.getSource().getSourceNode().getValue().contains(pceNode.getNodeId().getValue()))
+                    .collect(Collectors.toList());
+                if (!links.isEmpty()) {
+                    this.aendPceNode = pceNode;
+                }
+            }
+            if (this.zendPceNode == null && isAZendPceNode(this.serviceFormatZ, pceNode, znodeId, "Z")) {
+                // Added to ensure Z-node has a droplink in the topology
+                List<Link> links = this.allLinks.stream()
+                    .filter(x -> x.getDestination().getDestNode().getValue().contains(pceNode.getNodeId().getValue()))
+                    .collect(Collectors.toList());
+                if (!links.isEmpty()) {
+                    this.zendPceNode = pceNode;
+                }
+            }
         }
 
         allPceNodes.put(pceNode.getNodeId(), pceNode);
         LOG.debug("validateNode: node is saved {}", pceNode.getNodeId().getValue());
-        return;
     }
 
+    @SuppressWarnings("fallthrough")
+    @SuppressFBWarnings(
+        value = "SF_SWITCH_FALLTHROUGH",
+        justification = "intentional fallthrough")
     private boolean isAZendPceNode(String serviceFormat, PceOpticalNode pceNode, String azNodeId, String azEndPoint) {
         switch (serviceFormat) {
             case "Ethernet":
@@ -501,17 +497,20 @@ public class PceCalculation {
                 if (pceNode.getSupNetworkNodeId().equals(azNodeId)) {
                     return true;
                 }
-                return false;
+            //fallthrough
             case "OTU":
-                if ("A".equals(azEndPoint) && pceNode.getNodeId().getValue()
-                    .equals(this.input.getServiceAEnd().getRxDirection().getPort().getPortDeviceName())) {
-                    return true;
+                switch (azEndPoint) {
+                    case "A":
+                        return checkAendInputTxPortDeviceName()
+                            && pceNode.getNodeId().getValue()
+                                .equals(this.input.getServiceAEnd().getTxDirection().getPort().getPortDeviceName());
+                    case "Z":
+                        return checkZendInputTxPortDeviceName()
+                            && pceNode.getNodeId().getValue()
+                                .equals(this.input.getServiceZEnd().getTxDirection().getPort().getPortDeviceName());
+                    default:
+                        return false;
                 }
-                if ("Z".equals(azEndPoint) && pceNode.getNodeId().getValue()
-                    .equals(this.input.getServiceZEnd().getRxDirection().getPort().getPortDeviceName())) {
-                    return true;
-                }
-                return false;
             default:
                 LOG.debug("Unsupported service Format {} for node {}", serviceFormat, pceNode.getNodeId().getValue());
                 return false;
@@ -521,32 +520,47 @@ public class PceCalculation {
     private void validateOtnNode(Node node) {
         LOG.info("validateOtnNode: {} ", node.getNodeId().getValue());
         // PceOtnNode will be used in Graph algorithm
-        if (node.augmentation(Node1.class) != null) {
-            OpenroadmNodeType nodeType = node.augmentation(Node1.class).getNodeType();
-
-            PceOtnNode pceOtnNode = new PceOtnNode(node, nodeType, node.getNodeId(), "otn", serviceType);
-            pceOtnNode.validateXponder(anodeId, znodeId);
+        if (node.augmentation(Node1.class) == null) {
+            LOG.error("ValidateOtnNode: no node-type augmentation. Node {} is ignored", node.getNodeId().getValue());
+            return;
+        }
 
-            if (!pceOtnNode.isValid()) {
-                LOG.warn(" validateOtnNode: Node {} is ignored", node.getNodeId().getValue());
-                return;
-            }
-            if (validateNodeConstraints(pceOtnNode).equals(ConstraintTypes.HARD_EXCLUDE)) {
-                return;
-            }
-            if (pceOtnNode.getNodeId().getValue().equals(anodeId) && this.aendPceNode == null) {
-                this.aendPceNode = pceOtnNode;
-            }
-            if (pceOtnNode.getNodeId().getValue().equals(znodeId) && this.zendPceNode == null) {
-                this.zendPceNode = pceOtnNode;
-            }
-            allPceNodes.put(pceOtnNode.getNodeId(), pceOtnNode);
-            LOG.info("validateOtnNode: node {} is saved", node.getNodeId().getValue());
+        OpenroadmNodeType nodeType = node.augmentation(Node1.class).getNodeType();
+        String clientPort = null;
+        if (node.getNodeId().getValue().equals(anodeId)
+                && this.aendPceNode == null
+                && input.getServiceAEnd() != null
+                && input.getServiceAEnd().getRxDirection() != null
+                && input.getServiceAEnd().getRxDirection().getPort() != null
+                && input.getServiceAEnd().getRxDirection().getPort().getPortName() != null) {
+            clientPort = input.getServiceAEnd().getRxDirection().getPort().getPortName();
+        } else if (node.getNodeId().getValue().equals(znodeId)
+                && this.zendPceNode == null
+                && input.getServiceZEnd() != null
+                && input.getServiceZEnd().getRxDirection() != null
+                && input.getServiceZEnd().getRxDirection().getPort() != null
+                && input.getServiceZEnd().getRxDirection().getPort().getPortName() != null) {
+            clientPort = input.getServiceZEnd().getRxDirection().getPort().getPortName();
+        }
+
+        PceOtnNode pceOtnNode = new PceOtnNode(node, nodeType, node.getNodeId(), "otn", serviceType, clientPort);
+        pceOtnNode.validateXponder(anodeId, znodeId);
+
+        if (!pceOtnNode.isValid()) {
+            LOG.warn(" validateOtnNode: Node {} is ignored", node.getNodeId().getValue());
             return;
-        } else {
-            LOG.error("ValidateOtnNode: no node-type augmentation. Node {} is ignored", node.getNodeId().getValue());
+        }
+        if (validateNodeConstraints(pceOtnNode).equals(ConstraintTypes.HARD_EXCLUDE)) {
             return;
         }
+        if (pceOtnNode.getNodeId().getValue().equals(anodeId) && this.aendPceNode == null) {
+            this.aendPceNode = pceOtnNode;
+        }
+        if (pceOtnNode.getNodeId().getValue().equals(znodeId) && this.zendPceNode == null) {
+            this.zendPceNode = pceOtnNode;
+        }
+        allPceNodes.put(pceOtnNode.getNodeId(), pceOtnNode);
+        LOG.info("validateOtnNode: node {} is saved", node.getNodeId().getValue());
     }
 
     private ConstraintTypes validateNodeConstraints(PceNode pcenode) {
@@ -554,11 +568,11 @@ public class PceCalculation {
             return ConstraintTypes.NONE;
         }
         if (pceHardConstraints.getExcludeSupNodes().contains(pcenode.getSupNetworkNodeId())) {
-            LOG.info("validateNodeConstraints: {}", pcenode.getNodeId().getValue());
+            LOG.debug("validateNodeConstraints: {}", pcenode.getNodeId().getValue());
             return ConstraintTypes.HARD_EXCLUDE;
         }
         if (pceHardConstraints.getExcludeCLLI().contains(pcenode.getSupClliNodeId())) {
-            LOG.info("validateNodeConstraints: {}", pcenode.getNodeId().getValue());
+            LOG.debug("validateNodeConstraints: {}", pcenode.getNodeId().getValue());
             return ConstraintTypes.HARD_EXCLUDE;
         }
         return ConstraintTypes.NONE;
@@ -577,7 +591,7 @@ public class PceCalculation {
         List<Long> constraints = new ArrayList<>(pceHardConstraints.getExcludeSRLG());
         constraints.retainAll(link.getsrlgList());
         if (!constraints.isEmpty()) {
-            LOG.info("validateLinkConstraints: {}", link.getLinkId().getValue());
+            LOG.debug("validateLinkConstraints: {}", link.getLinkId().getValue());
             return ConstraintTypes.HARD_EXCLUDE;
         }
 
@@ -604,7 +618,7 @@ public class PceCalculation {
                 pceNode.initXndrTps(input.getServiceAEnd().getServiceFormat());
                 break;
             default:
-                LOG.warn("endPceNode: Node {} is not SRG or XPONDER !", nodeId);
+                LOG.debug("endPceNode: Node {} is not SRG or XPONDER !", nodeId);
                 return false;
         }
 
@@ -637,12 +651,14 @@ public class PceCalculation {
                     pcelink.getlinkType(), pcelink);
                 break;
             case ADDLINK:
-                pcelink.setClient(source.getRdmSrgClient(pcelink.getSourceTP().toString()));
+                pcelink.setClient(
+                    source.getRdmSrgClient(pcelink.getSourceTP().getValue(), StringConstants.SERVICE_DIRECTION_AZ));
                 addLinks.add(pcelink);
                 LOG.debug("validateLink: ADD-LINK saved  {}", pcelink);
                 break;
             case DROPLINK:
-                pcelink.setClient(dest.getRdmSrgClient(pcelink.getDestTP().toString()));
+                pcelink.setClient(
+                    dest.getRdmSrgClient(pcelink.getDestTP().getValue(), StringConstants.SERVICE_DIRECTION_ZA));
                 dropLinks.add(pcelink);
                 LOG.debug("validateLink: DROP-LINK saved  {}", pcelink);
                 break;
@@ -650,13 +666,13 @@ public class PceCalculation {
                 // store separately all SRG links directly
                 azSrgs.add(sourceId);
                 // connected to A/Z
-                if (!dest.checkTP(pcelink.getDestTP().toString())) {
+                if (!dest.checkTP(pcelink.getDestTP().getValue())) {
                     LOG.debug(
                         "validateLink: XPONDER-INPUT is rejected as NW port is busy - {} ", pcelink);
                     return false;
                 }
-                if (dest.getXpdrClient(pcelink.getDestTP().toString()) != null) {
-                    pcelink.setClient(dest.getXpdrClient(pcelink.getDestTP().toString()));
+                if (dest.getXpdrClient(pcelink.getDestTP().getValue()) != null) {
+                    pcelink.setClient(dest.getXpdrClient(pcelink.getDestTP().getValue()));
                 }
                 allPceLinks.put(linkId, pcelink);
                 source.addOutgoingLink(pcelink);
@@ -667,13 +683,13 @@ public class PceCalculation {
                 // store separately all SRG links directly
                 azSrgs.add(destId);
                 // connected to A/Z
-                if (!source.checkTP(pcelink.getSourceTP().toString())) {
+                if (!source.checkTP(pcelink.getSourceTP().getValue())) {
                     LOG.debug(
                         "validateLink: XPONDER-OUTPUT is rejected as NW port is busy - {} ", pcelink);
                     return false;
                 }
-                if (source.getXpdrClient(pcelink.getSourceTP().toString()) != null) {
-                    pcelink.setClient(source.getXpdrClient(pcelink.getSourceTP().toString()));
+                if (source.getXpdrClient(pcelink.getSourceTP().getValue()) != null) {
+                    pcelink.setClient(source.getXpdrClient(pcelink.getSourceTP().getValue()));
                 }
                 allPceLinks.put(linkId, pcelink);
                 source.addOutgoingLink(pcelink);
@@ -703,13 +719,15 @@ public class PceCalculation {
 
         switch (pceOtnLink.getlinkType()) {
             case OTNLINK:
-                if (dest.getXpdrClient(pceOtnLink.getDestTP().toString()) != null) {
-                    pceOtnLink.setClient(dest.getXpdrClient(pceOtnLink.getDestTP().toString()));
+                if (source.getXpdrClient(pceOtnLink.getSourceTP().getValue()) != null) {
+                    pceOtnLink.setClient(source.getXpdrClient(pceOtnLink.getSourceTP().getValue()));
+                }
+                if (dest.getXpdrClient(pceOtnLink.getDestTP().getValue()) != null) {
+                    pceOtnLink.setClient(dest.getXpdrClient(pceOtnLink.getDestTP().getValue()));
                 }
-
                 allPceLinks.put(linkId, pceOtnLink);
                 source.addOutgoingLink(pceOtnLink);
-                LOG.info("validateLink: OTN-LINK added to allPceLinks {}", pceOtnLink);
+                LOG.debug("validateLink: OTN-LINK added to allPceLinks {}", pceOtnLink);
                 break;
             default:
                 LOG.warn("validateLink: link type is not supported {}", pceOtnLink);
@@ -743,7 +761,7 @@ public class PceCalculation {
 
     private static void printNodesInfo(Map<NodeId, PceNode> allPceNodes) {
         allPceNodes.forEach(((nodeId, pceNode) -> {
-            LOG.info("In printNodes in node {} : outgoing links {} ", pceNode.getNodeId().getValue(),
+            LOG.debug("In printNodes in node {} : outgoing links {} ", pceNode.getNodeId().getValue(),
                     pceNode.getOutgoingLinks());
         }));
     }
@@ -759,12 +777,42 @@ public class PceCalculation {
         // deviceNodeId: openroadm-network level node
         List<McCapabilities> mcCapabilities = mappingUtils.getMcCapabilitiesForNode(deviceNodeId);
         String[] params = nodeId.getValue().split("-");
-        // DEGX or SRGX
-        String rdmModuleName = params[params.length - 1];
+        // DEGx or SRGx or XPDRx
+        String moduleName = params[params.length - 1];
         for (McCapabilities mcCapabitility : mcCapabilities) {
-            if (mcCapabitility.getMcNodeName().contains(rdmModuleName)
+            if (mcCapabitility.getMcNodeName().contains("XPDR")
+                    && mcCapabitility.getSlotWidthGranularity() != null) {
+                return mcCapabitility.getSlotWidthGranularity().getValue().decimalValue();
+            }
+            if (mcCapabitility.getMcNodeName().contains(moduleName)
                     && mcCapabitility.getSlotWidthGranularity() != null) {
-                return mcCapabitility.getSlotWidthGranularity().getValue();
+                return mcCapabitility.getSlotWidthGranularity().getValue().decimalValue();
+            }
+        }
+        return GridConstant.SLOT_WIDTH_50;
+    }
+
+    /**
+     * Get mc capability central-width granularity for device.
+     * @param deviceNodeId String
+     * @param nodeId NodeId
+     * @return center-freq granularity
+     */
+    private BigDecimal getCentralFreqGranularity(String deviceNodeId, NodeId nodeId) {
+        // nodeId: openroadm-topology level node
+        // deviceNodeId: openroadm-network level node
+        List<McCapabilities> mcCapabilities = mappingUtils.getMcCapabilitiesForNode(deviceNodeId);
+        String[] params = nodeId.getValue().split("-");
+        // DEGx or SRGx or XPDRx
+        String moduleName = params[params.length - 1];
+        for (McCapabilities mcCapabitility : mcCapabilities) {
+            if (mcCapabitility.getMcNodeName().contains("XPDR")
+                    && mcCapabitility.getCenterFreqGranularity() != null) {
+                return mcCapabitility.getCenterFreqGranularity().getValue().decimalValue();
+            }
+            if (mcCapabitility.getMcNodeName().contains(moduleName)
+                    && mcCapabitility.getCenterFreqGranularity() != null) {
+                return mcCapabitility.getCenterFreqGranularity().getValue().decimalValue();
             }
         }
         return GridConstant.SLOT_WIDTH_50;