alivenessmonitor/alivenessmonitor-impl/src/main/java/org/opendaylight/genius/alivenessmonitor/internal/InventoryReader.java

   1 /*
   2  * Copyright (c) 2016 Ericsson India Global Services Pvt Ltd. 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.genius.alivenessmonitor.internal;
   9
  10 import com.google.common.base.Optional;
  11 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  12 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  13 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  14 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.MacAddress;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnector;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
  17 import org.opendaylight.yangtools.yang.binding.DataObject;
  18 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  19 import org.slf4j.Logger;
  20 import org.slf4j.LoggerFactory;
  21
  22 class InventoryReader {
  23     private Logger LOG = LoggerFactory.getLogger(InventoryReader.class);
  24     private DataBroker dataService;
  25
  26     public InventoryReader(DataBroker dataService) {
  27         this.dataService = dataService;
  28     }
  29
  30     public String getMacAddress(InstanceIdentifier<NodeConnector> nodeConnectorId)  {
  31         //TODO: Use mdsal apis to read
  32         Optional<NodeConnector> optNc = read(LogicalDatastoreType.OPERATIONAL, nodeConnectorId);
  33         if(optNc.isPresent()) {
  34             NodeConnector nc = optNc.get();
  35             FlowCapableNodeConnector fcnc = nc.getAugmentation(FlowCapableNodeConnector.class);
  36             MacAddress macAddress = fcnc.getHardwareAddress();
  37             return macAddress.getValue();
  38         }
  39         return null;
  40     }
  41
  42     private <T extends DataObject> Optional<T> read(LogicalDatastoreType datastoreType,
  43                                                     InstanceIdentifier<T> path) {
  44
  45         ReadOnlyTransaction tx = dataService.newReadOnlyTransaction();
  46
  47         Optional<T> result = Optional.absent();
  48         try {
  49             result = tx.read(datastoreType, path).get();
  50         } catch (Exception e) {
  51             throw new RuntimeException(e);
  52         }
  53         tx.close();
  54
  55         return result;
  56     }
  57 }