Convert TapiNetworkModelServiceImpl to a Component
[transportpce.git] / tapi / src / main / java / org / opendaylight / transportpce / tapi / R2RTapiLinkDiscovery.java
index 89829189a43c2dac39310a421c2401c283cee467..3af6fec15a1c878adc4a3003358cfc5a3fbec211 100644 (file)
@@ -7,67 +7,38 @@
  */
 package org.opendaylight.transportpce.tapi;
 
-import java.nio.charset.Charset;
-import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
-import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-import java.util.UUID;
+import java.util.Set;
 import java.util.concurrent.ExecutionException;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
-import org.eclipse.jdt.annotation.Nullable;
-import org.opendaylight.mdsal.binding.api.DataBroker;
 import org.opendaylight.mdsal.binding.api.MountPoint;
-import org.opendaylight.mdsal.binding.api.ReadTransaction;
 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
 import org.opendaylight.transportpce.common.Timeouts;
 import org.opendaylight.transportpce.common.device.DeviceTransactionManager;
-import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.portmapping.rev210315.Network;
-import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.portmapping.rev210315.cp.to.degree.CpToDegree;
-import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.portmapping.rev210315.mapping.Mapping;
-import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.portmapping.rev210315.network.Nodes;
-import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.portmapping.rev210315.network.NodesKey;
-import org.opendaylight.yang.gen.v1.http.org.openroadm.common.types.rev170929.Direction;
+import org.opendaylight.transportpce.common.network.NetworkTransactionService;
+import org.opendaylight.transportpce.tapi.utils.TapiLink;
+import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.portmapping.rev220922.Network;
+import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.portmapping.rev220922.cp.to.degree.CpToDegree;
+import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.portmapping.rev220922.mapping.Mapping;
+import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.portmapping.rev220922.network.Nodes;
+import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.portmapping.rev220922.network.NodesKey;
+import org.opendaylight.yang.gen.v1.http.org.openroadm.device.rev170206.OrgOpenroadmDeviceData;
 import org.opendaylight.yang.gen.v1.http.org.openroadm.device.rev170206.org.openroadm.device.container.OrgOpenroadmDevice;
 import org.opendaylight.yang.gen.v1.http.org.openroadm.device.rev170206.org.openroadm.device.container.org.openroadm.device.Protocols;
 import org.opendaylight.yang.gen.v1.http.org.openroadm.lldp.rev161014.Protocols1;
 import org.opendaylight.yang.gen.v1.http.org.openroadm.lldp.rev161014.lldp.container.lldp.NbrList;
 import org.opendaylight.yang.gen.v1.http.org.openroadm.lldp.rev161014.lldp.container.lldp.nbr.list.IfName;
+import org.opendaylight.yang.gen.v1.http.org.transportpce.common.types.rev220926.Direction;
 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.network.rev180226.NodeId;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.AdministrativeState;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.CapacityUnit;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.ForwardingDirection;
 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.LayerProtocolName;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.LifecycleState;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.OperationalState;
 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.Uuid;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.capacity.TotalSizeBuilder;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.capacity.pac.AvailableCapacityBuilder;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.capacity.pac.TotalPotentialCapacityBuilder;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.global._class.Name;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.common.rev181210.global._class.NameBuilder;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.ProtectionType;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.RestorationPolicy;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.link.NodeEdgePoint;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.link.NodeEdgePointBuilder;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.link.NodeEdgePointKey;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.link.ResilienceTypeBuilder;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.risk.parameter.pac.RiskCharacteristic;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.risk.parameter.pac.RiskCharacteristicBuilder;
 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.Link;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.LinkBuilder;
 import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.topology.LinkKey;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.transfer.cost.pac.CostCharacteristic;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.transfer.cost.pac.CostCharacteristicBuilder;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.transfer.timing.pac.LatencyCharacteristic;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.transfer.timing.pac.LatencyCharacteristicBuilder;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.validation.pac.ValidationMechanism;
-import org.opendaylight.yang.gen.v1.urn.onf.otcc.yang.tapi.topology.rev181210.validation.pac.ValidationMechanismBuilder;
 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-import org.opendaylight.yangtools.yang.common.Uint64;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -75,13 +46,15 @@ public class R2RTapiLinkDiscovery {
 
     private static final Logger LOG = LoggerFactory.getLogger(R2RTapiLinkDiscovery.class);
 
-    private final DataBroker dataBroker;
+    private final NetworkTransactionService networkTransactionService;
     private final DeviceTransactionManager deviceTransactionManager;
-    private static final String PHTNC_MEDIA = "PHOTONIC_MEDIA";
+    private final TapiLink tapiLink;
 
-    public R2RTapiLinkDiscovery(final DataBroker dataBroker, DeviceTransactionManager deviceTransactionManager) {
-        this.dataBroker = dataBroker;
+    public R2RTapiLinkDiscovery(NetworkTransactionService networkTransactionService,
+            DeviceTransactionManager deviceTransactionManager, TapiLink tapiLink) {
+        this.networkTransactionService = networkTransactionService;
         this.deviceTransactionManager = deviceTransactionManager;
+        this.tapiLink = tapiLink;
     }
 
     public Map<LinkKey, Link> readLLDP(NodeId nodeId, int nodeVersion, Uuid tapiTopoUuid) {
@@ -91,14 +64,15 @@ public class R2RTapiLinkDiscovery {
         switch (nodeVersion) {
             case 1:
                 // 1.2.1
-                InstanceIdentifier<Protocols> protocols121IID = InstanceIdentifier.create(OrgOpenroadmDevice.class)
-                    .child(Protocols.class);
+                InstanceIdentifier<Protocols> protocols121IID = InstanceIdentifier
+                    .builderOfInherited(OrgOpenroadmDeviceData.class, OrgOpenroadmDevice.class)
+                    .child(Protocols.class)
+                    .build();
                 Optional<Protocols> protocol121Object = this.deviceTransactionManager.getDataFromDevice(
                     nodeId.getValue(), LogicalDatastoreType.OPERATIONAL, protocols121IID, Timeouts.DEVICE_READ_TIMEOUT,
                     Timeouts.DEVICE_READ_TIMEOUT_UNIT);
-                if (!protocol121Object.isPresent()
-                        || (protocol121Object.get().augmentation(Protocols1.class) == null)) {
-                    LOG.warn("LLDP subtree is missing : isolated openroadm device");
+                if (hasNoNeighbor121(protocol121Object)) {
+                    LOG.warn("LLDP subtree is missing or incomplete: isolated openroadm device");
                     return new HashMap<>();
                 }
                 // get neighbor list
@@ -109,23 +83,24 @@ public class R2RTapiLinkDiscovery {
             case 2:
                 // 2.2.1
                 InstanceIdentifier<org.opendaylight.yang.gen.v1.http.org.openroadm.device.rev181019.org.openroadm.device
-                    .container.org.openroadm.device.Protocols> protocols221IID =
-                        InstanceIdentifier.create(org.opendaylight.yang.gen.v1.http
-                            .org.openroadm.device.rev181019.org.openroadm.device.container.OrgOpenroadmDevice.class)
-                            .child(org.opendaylight.yang.gen.v1.http.org.openroadm.device.rev181019
-                                .org.openroadm.device.container.org.openroadm.device.Protocols.class);
-                Optional<org.opendaylight.yang.gen.v1.http.org.openroadm.device.rev181019.org.openroadm.device
-                    .container.org.openroadm.device.Protocols> protocol221Object = this.deviceTransactionManager
+                        .container.org.openroadm.device.Protocols> protocols221IID = InstanceIdentifier
+                    .builderOfInherited(
+                        org.opendaylight.yang.gen.v1.http.org.openroadm.device.rev181019.OrgOpenroadmDeviceData.class,
+                        org.opendaylight.yang.gen.v1.http.org.openroadm.device.rev181019.org.openroadm.device.container
+                            .OrgOpenroadmDevice.class)
+                    .child(org.opendaylight.yang.gen.v1.http.org.openroadm.device.rev181019.org.openroadm.device
+                        .container.org.openroadm.device.Protocols.class)
+                    .build();
+                var protocol221Object = this.deviceTransactionManager
                     .getDataFromDevice(nodeId.getValue(), LogicalDatastoreType.OPERATIONAL, protocols221IID,
                         Timeouts.DEVICE_READ_TIMEOUT, Timeouts.DEVICE_READ_TIMEOUT_UNIT);
-                if (!protocol221Object.isPresent() || (protocol221Object.get().augmentation(
-                        org.opendaylight.yang.gen.v1.http.org.openroadm.lldp.rev181019.Protocols1.class) == null)) {
-                    LOG.warn("LLDP subtree is missing : isolated openroadm device");
+                if (hasNoNeighbor221(protocol221Object)) {
+                    LOG.warn("LLDP subtree is missing or incomplete: isolated openroadm device");
                     return new HashMap<>();
                 }
-                org.opendaylight.yang.gen.v1.http.org.openroadm.lldp.rev181019.lldp.container.lldp.@Nullable NbrList
-                    nbr221List = protocol221Object.get().augmentation(org.opendaylight.yang.gen.v1.http
-                        .org.openroadm.lldp.rev181019.Protocols1.class).getLldp().getNbrList();
+                var nbr221List = protocol221Object.get().augmentation(
+                        org.opendaylight.yang.gen.v1.http.org.openroadm.lldp.rev181019.Protocols1.class)
+                    .getLldp().getNbrList();
                 LOG.info("LLDP subtree is present. Device has {} neighbours", nbr221List.getIfName().size());
                 return rdm2rdmLinkCreatev221(nodeId, tapiTopoUuid, nbr221List);
             case 3:
@@ -138,6 +113,27 @@ public class R2RTapiLinkDiscovery {
         }
     }
 
+    private boolean hasNoNeighbor121(Optional<Protocols> protocol121Object) {
+        return protocol121Object.isEmpty()
+                || protocol121Object.get().augmentation(Protocols1.class) == null
+                || protocol121Object.get().augmentation(Protocols1.class).getLldp() == null
+                || protocol121Object.get().augmentation(Protocols1.class).getLldp().getNbrList() == null;
+    }
+
+    private boolean hasNoNeighbor221(Optional<
+            org.opendaylight.yang.gen.v1.http.org.openroadm.device.rev181019.org.openroadm.device.container.org
+                    .openroadm.device.Protocols> protocol221Object) {
+        return protocol221Object.isEmpty()
+                || protocol221Object.get().augmentation(
+                        org.opendaylight.yang.gen.v1.http.org.openroadm.lldp.rev181019.Protocols1.class) == null
+                || protocol221Object.get().augmentation(
+                        org.opendaylight.yang.gen.v1.http.org.openroadm.lldp.rev181019.Protocols1.class)
+                    .getLldp() == null
+                || protocol221Object.get().augmentation(
+                        org.opendaylight.yang.gen.v1.http.org.openroadm.lldp.rev181019.Protocols1.class)
+                    .getLldp().getNbrList() == null;
+    }
+
     private Map<LinkKey, Link> rdm2rdmLinkCreatev221(NodeId nodeId, Uuid tapiTopoUuid,
             org.opendaylight.yang.gen.v1.http.org.openroadm.lldp.rev181019.lldp.container.lldp.NbrList nbrList) {
         Map<LinkKey, Link> linkMap = new HashMap<>();
@@ -160,6 +156,8 @@ public class R2RTapiLinkDiscovery {
                 ifName.getRemotePortId(), tapiTopoUuid);
             if (omsLink != null) {
                 linkMap.put(omsLink.key(), omsLink);
+            } else {
+                LOG.error("Link was not created");
             }
         }
         return linkMap;
@@ -186,6 +184,8 @@ public class R2RTapiLinkDiscovery {
                 ifName.getRemotePortId(), tapiTopoUuid);
             if (omsLink != null) {
                 linkMap.put(omsLink.key(), omsLink);
+            } else {
+                LOG.error("Link was not created");
             }
         }
         return linkMap;
@@ -242,102 +242,27 @@ public class R2RTapiLinkDiscovery {
         }
         // Todo -> only handling for the bidirectional case. I assume all tps are of the type bidirectional
         LOG.debug("Tapi R2R Link DstTPTx {}, DstTPRx {}", destTpTx, srcTpRx);
+
         // Create OMS Tapi Link
         LOG.info("Tapi R2R Link Found a neighbor SrcNodeId: {} , SrcDegId: {} , SrcTPId: {}, DestNodeId:{} , "
             + "DestDegId: {}, DestTPId: {}", nodeId.getValue(), srcDegId, srcTpTx, destNodeId, destDegId, destTpRx);
-        Link omsLink = createTapiLink(nodeId.getValue(), srcTpTx, destNodeId.getValue(), destTpRx, tapiTopoUuid);
+        Link omsLink = this.tapiLink.createTapiLink(nodeId.getValue(), srcTpTx, destNodeId.getValue(), destTpTx,
+            TapiStringConstants.OMS_RDM_RDM_LINK, TapiStringConstants.PHTNC_MEDIA, TapiStringConstants.PHTNC_MEDIA,
+            TapiStringConstants.PHTNC_MEDIA, TapiStringConstants.PHTNC_MEDIA,
+            this.tapiLink.getAdminState(nodeId.getValue(), destNodeId.getValue(), srcTpTx, destTpTx),
+            this.tapiLink.getOperState(nodeId.getValue(), destNodeId.getValue(), srcTpTx, destTpTx),
+            Set.of(LayerProtocolName.PHOTONICMEDIA), Set.of(LayerProtocolName.PHOTONICMEDIA.getName()), tapiTopoUuid);
         LOG.info("Tapi R2R Link OMS link created = {}", omsLink);
         return omsLink;
     }
 
-    private Link createTapiLink(String sourceNode, String sourceTp, String destNode, String destTp, Uuid tapiTopoUuid) {
-        Map<NodeEdgePointKey, NodeEdgePoint> nepList = new HashMap<>();
-        Uuid sourceUuidNode = new Uuid(UUID.nameUUIDFromBytes((String.join("+", sourceNode,
-            PHTNC_MEDIA)).getBytes(Charset.forName("UTF-8"))).toString());
-        Uuid sourceUuidTp = new Uuid(UUID.nameUUIDFromBytes((String.join("+", sourceNode, PHTNC_MEDIA, sourceTp))
-            .getBytes(Charset.forName("UTF-8"))).toString());
-        Uuid destUuidNode = new Uuid(UUID.nameUUIDFromBytes((String.join("+", destNode,
-            PHTNC_MEDIA)).getBytes(Charset.forName("UTF-8"))).toString());
-        Uuid destUuidTp = new Uuid(UUID.nameUUIDFromBytes((String.join("+", destNode, PHTNC_MEDIA, destTp))
-            .getBytes(Charset.forName("UTF-8"))).toString());
-        NodeEdgePoint sourceNep = new NodeEdgePointBuilder()
-            .setTopologyUuid(tapiTopoUuid)
-            .setNodeUuid(sourceUuidNode)
-            .setNodeEdgePointUuid(sourceUuidTp)
-            .build();
-        nepList.put(sourceNep.key(), sourceNep);
-        NodeEdgePoint destNep = new NodeEdgePointBuilder()
-            .setTopologyUuid(tapiTopoUuid)
-            .setNodeUuid(destUuidNode)
-            .setNodeEdgePointUuid(destUuidTp)
-            .build();
-        nepList.put(destNep.key(), destNep);
-        String linkNameValue = String.join("-", sourceNode, sourceTp.split("-")[0], sourceTp)
-            + "to" + String.join("-", destNode, destTp.split("-")[0], destTp);
-        Name linkName = new NameBuilder().setValueName("OMS link name")
-            .setValue(linkNameValue)
-            .build();
-        CostCharacteristic costCharacteristic = new CostCharacteristicBuilder()
-            .setCostAlgorithm("Restricted Shortest Path - RSP")
-            .setCostName("HOP_COUNT")
-            .setCostValue("12345678")
-            .build();
-        LatencyCharacteristic latencyCharacteristic = new LatencyCharacteristicBuilder()
-            .setFixedLatencyCharacteristic("12345678")
-            .setQueingLatencyCharacteristic("12345678")
-            .setJitterCharacteristic("12345678")
-            .setWanderCharacteristic("12345678")
-            .setTrafficPropertyName("FIXED_LATENCY")
-            .build();
-        RiskCharacteristic riskCharacteristic = new RiskCharacteristicBuilder()
-            .setRiskCharacteristicName("risk characteristic")
-            .setRiskIdentifierList(List.of("risk identifier1", "risk identifier2"))
-            .build();
-        ValidationMechanism validationMechanism = new ValidationMechanismBuilder()
-            .setValidationMechanism("validation mechanism")
-            .setValidationRobustness("validation robustness")
-            .setLayerProtocolAdjacencyValidated("layer protocol adjacency")
-            .build();
-        return new LinkBuilder()
-            .setUuid(new Uuid(
-                UUID.nameUUIDFromBytes(linkNameValue.getBytes(Charset.forName("UTF-8")))
-                    .toString()))
-            .setName(Map.of(linkName.key(), linkName))
-            .setLayerProtocolName(List.of(LayerProtocolName.PHOTONICMEDIA))
-            .setTransitionedLayerProtocolName(new ArrayList<>())
-            .setNodeEdgePoint(nepList)
-            .setDirection(ForwardingDirection.BIDIRECTIONAL)
-            .setResilienceType(new ResilienceTypeBuilder().setProtectionType(ProtectionType.NOPROTECTON)
-                .setRestorationPolicy(RestorationPolicy.NA)
-                .build())
-            .setAdministrativeState(AdministrativeState.UNLOCKED)
-            .setOperationalState(OperationalState.ENABLED)
-            .setLifecycleState(LifecycleState.INSTALLED)
-            .setTotalPotentialCapacity(new TotalPotentialCapacityBuilder().setTotalSize(
-                new TotalSizeBuilder().setUnit(CapacityUnit.GBPS)
-                    .setValue(Uint64.valueOf(100)).build()).build())
-            .setAvailableCapacity(new AvailableCapacityBuilder().setTotalSize(
-                new TotalSizeBuilder().setUnit(CapacityUnit.MBPS)
-                    .setValue(Uint64.valueOf(100)).build())
-                .build())
-            .setCostCharacteristic(Map.of(costCharacteristic.key(), costCharacteristic))
-            .setLatencyCharacteristic(Map.of(latencyCharacteristic.key(), latencyCharacteristic))
-            .setRiskCharacteristic(Map.of(riskCharacteristic.key(), riskCharacteristic))
-            .setErrorCharacteristic("error")
-            .setLossCharacteristic("loss")
-            .setRepeatDeliveryCharacteristic("repeat delivery")
-            .setDeliveryOrderCharacteristic("delivery order")
-            .setUnavailableTimeCharacteristic("unavailable time")
-            .setServerIntegrityProcessCharacteristic("server integrity process")
-            .setValidationMechanism(Map.of(validationMechanism.key(), validationMechanism))
-            .build();
-    }
-
     private Integer getDegFromInterface(NodeId nodeId, String interfaceName) {
         InstanceIdentifier<Nodes> nodesIID = InstanceIdentifier.builder(Network.class)
             .child(Nodes.class, new NodesKey(nodeId.getValue())).build();
-        try (ReadTransaction readTx = this.dataBroker.newReadOnlyTransaction()) {
-            Optional<Nodes> nodesObject = readTx.read(LogicalDatastoreType.CONFIGURATION, nodesIID).get();
+        try {
+
+            Optional<Nodes> nodesObject = this.networkTransactionService.read(LogicalDatastoreType.CONFIGURATION,
+                nodesIID).get();
             if (nodesObject.isEmpty() || (nodesObject.get().getCpToDegree() == null)) {
                 LOG.warn("Could not find mapping for Interface {} for nodeId {}", interfaceName,
                     nodeId.getValue());
@@ -347,7 +272,7 @@ public class R2RTapiLinkDiscovery {
             Stream<CpToDegree> cpToDegStream = cpToDeg.stream().filter(cp -> cp.getInterfaceName() != null)
                 .filter(cp -> cp.getInterfaceName().equals(interfaceName));
             if (cpToDegStream != null) {
-                @SuppressWarnings("unchecked") Optional<CpToDegree> firstCpToDegree = cpToDegStream.findFirst();
+                Optional<CpToDegree> firstCpToDegree = cpToDegStream.findFirst();
                 if (firstCpToDegree.isEmpty() || (firstCpToDegree == null)) {
                     LOG.debug("Not found so returning nothing");
                     return null;
@@ -367,8 +292,9 @@ public class R2RTapiLinkDiscovery {
     public Direction getDegreeDirection(Integer degreeCounter, NodeId nodeId) {
         InstanceIdentifier<Nodes> nodesIID = InstanceIdentifier.builder(Network.class)
             .child(Nodes.class, new NodesKey(nodeId.getValue())).build();
-        try (ReadTransaction readTx = this.dataBroker.newReadOnlyTransaction()) {
-            Optional<Nodes> nodesObject = readTx.read(LogicalDatastoreType.CONFIGURATION, nodesIID).get();
+        try {
+            Optional<Nodes> nodesObject = this.networkTransactionService.read(LogicalDatastoreType.CONFIGURATION,
+                nodesIID).get();
             if (nodesObject.isPresent() && (nodesObject.get().getMapping() != null)) {
                 Collection<Mapping> mappingList = nodesObject.get().nonnullMapping().values();
                 mappingList = mappingList.stream().filter(mp -> mp.getLogicalConnectionPoint().contains("DEG"