l2switch-main/src/main/java/org/opendaylight/l2switch/inventory/InventoryReader.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.l2switch.inventory;
   9
  10 import com.google.common.base.Optional;
  11 import java.util.List;
  12 import java.util.concurrent.ExecutionException;
  13 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  14 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  15 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  16 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.MacAddress;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.address.tracker.rev140617.AddressCapableNodeConnector;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.address.tracker.rev140617.address.node.connector.Addresses;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.l2switch.loopremover.rev140714.StpStatus;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.l2switch.loopremover.rev140714.StpStatusAwareNodeConnector;
  24 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 /**
  29  * InventoryReader reads the opendaylight-inventory tree in MD-SAL data store.
  30  */
  31 public class InventoryReader {
  32
  33     private static final Logger LOG = LoggerFactory.getLogger(InventoryReader.class);
  34     private DataBroker dataService;
  35
  36     /**
  37      * Construct an InventoryService object with the specified inputs.
  38      *
  39      * @param dataService
  40      *            The DataBrokerService associated with the InventoryService.
  41      */
  42     public InventoryReader(DataBroker dataService) {
  43         this.dataService = dataService;
  44     }
  45
  46     /**
  47      * Get the NodeConnector on the specified node with the specified MacAddress
  48      * observation.
  49      *
  50      * @param nodeInsId
  51      *            InstanceIdentifier for the node on which to search for.
  52      * @param macAddress
  53      *            MacAddress to be searched for.
  54      * @return NodeConnectorRef that pertains to the NodeConnector containing
  55      *         the MacAddress observation.
  56      */
  57     public NodeConnectorRef getNodeConnector(InstanceIdentifier<Node> nodeInsId, MacAddress macAddress) {
  58         if (nodeInsId == null || macAddress == null) {
  59             return null;
  60         }
  61
  62         NodeConnectorRef destNodeConnector = null;
  63         long latest = -1;
  64         ReadOnlyTransaction readOnlyTransaction = dataService.newReadOnlyTransaction();
  65         try {
  66             Optional<Node> dataObjectOptional = null;
  67             dataObjectOptional = readOnlyTransaction.read(LogicalDatastoreType.OPERATIONAL, nodeInsId).get();
  68             if (dataObjectOptional.isPresent()) {
  69                 Node node = (Node) dataObjectOptional.get();
  70                 LOG.debug("Looking address{} in node : {}", macAddress, nodeInsId);
  71                 for (NodeConnector nc : node.getNodeConnector()) {
  72                     // Don't look for mac in discarding node connectors
  73                     StpStatusAwareNodeConnector saNodeConnector = nc.augmentation(StpStatusAwareNodeConnector.class);
  74                     if (saNodeConnector != null && StpStatus.Discarding.equals(saNodeConnector.getStatus())) {
  75                         continue;
  76                     }
  77                     LOG.debug("Looking address{} in nodeconnector : {}", macAddress, nc.key());
  78                     AddressCapableNodeConnector acnc = nc.augmentation(AddressCapableNodeConnector.class);
  79                     if (acnc != null) {
  80                         List<Addresses> addressesList = acnc.getAddresses();
  81                         for (Addresses add : addressesList) {
  82                             if (macAddress.equals(add.getMac())) {
  83                                 if (add.getLastSeen() > latest) {
  84                                     destNodeConnector = new NodeConnectorRef(
  85                                             nodeInsId.child(NodeConnector.class, nc.key()));
  86                                     latest = add.getLastSeen();
  87                                     LOG.debug("Found address{} in nodeconnector : {}", macAddress, nc.key());
  88                                     break;
  89                                 }
  90                             }
  91                         }
  92                     }
  93                 }
  94             }
  95         } catch (InterruptedException e) {
  96             LOG.error("Failed to read nodes from Operation data store.");
  97             readOnlyTransaction.close();
  98             throw new RuntimeException("Failed to read nodes from Operation data store.", e);
  99         } catch (ExecutionException e) {
 100             LOG.error("Failed to read nodes from Operation data store.");
 101             readOnlyTransaction.close();
 102             throw new RuntimeException("Failed to read nodes from Operation data store.", e);
 103         }
 104         readOnlyTransaction.close();
 105         return destNodeConnector;
 106     }
 107
 108 }