fcapsapplication/fcapsapplication-impl/src/main/java/org/opendaylight/genius/fcapsapp/FcapsProvider.java

   1 /*
   2  * Copyright (c) 2016, 2017 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.fcapsapp;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import javax.annotation.PostConstruct;
  13 import javax.annotation.PreDestroy;
  14 import javax.inject.Inject;
  15 import javax.inject.Singleton;
  16 import org.apache.aries.blueprint.annotation.service.Reference;
  17 import org.opendaylight.genius.fcapsapp.performancecounter.PacketInCounterHandler;
  18 import org.opendaylight.genius.fcapsapp.portinfo.PortNameMapping;
  19 import org.opendaylight.mdsal.binding.api.DataBroker;
  20 import org.opendaylight.mdsal.binding.api.DataTreeIdentifier;
  21 import org.opendaylight.mdsal.binding.api.NotificationService;
  22 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  26 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 @Singleton
  31 public class FcapsProvider implements AutoCloseable {
  32     private final DataBroker dataBroker;
  33     private final NotificationService notificationService;
  34     private final PacketInCounterHandler packetInCounterHandler;
  35     private final NodeEventListener<FlowCapableNode> nodeEventListener;
  36
  37     private static final Logger LOG = LoggerFactory.getLogger(FcapsProvider.class);
  38
  39     /**
  40      * Constructor sets the services.
  41      *
  42      * @param dataBroker
  43      *            instance of databroker
  44      * @param notificationService
  45      *            instance of notificationservice
  46      * @param packetInCounterHandler
  47      *            instance of PacketInCounterHandler
  48      * @param nodeEventListener
  49      *            instance of NodeEventListener
  50      */
  51     @Inject
  52     public FcapsProvider(@Reference final DataBroker dataBroker,
  53                          @Reference final NotificationService notificationService,
  54                          final PacketInCounterHandler packetInCounterHandler,
  55                          final NodeEventListener nodeEventListener) {
  56         this.dataBroker = requireNonNull(dataBroker, "DataBroker can not be null!");
  57         LOG.info("FcapsProvider dataBroker is set");
  58
  59         this.notificationService = requireNonNull(notificationService, "notificationService can not be null!");
  60         LOG.info("FcapsProvider notificationProviderService is set");
  61
  62         this.packetInCounterHandler = packetInCounterHandler;
  63         this.nodeEventListener = nodeEventListener;
  64     }
  65
  66     @PostConstruct
  67     public void start() {
  68         PortNameMapping.registerPortMappingBean();
  69         registerListener();
  70         notificationService.registerNotificationListener(packetInCounterHandler);
  71         LOG.info("FcapsProvider started");
  72     }
  73
  74     @PreDestroy
  75     @Override
  76     public void close() {
  77         LOG.info("FcapsProvider closed");
  78     }
  79
  80     private void registerListener() {
  81         final DataTreeIdentifier<FlowCapableNode> treeId = DataTreeIdentifier.create(LogicalDatastoreType.OPERATIONAL,
  82                 getWildCardPath());
  83         dataBroker.registerDataTreeChangeListener(treeId, nodeEventListener);
  84     }
  85
  86     private InstanceIdentifier<FlowCapableNode> getWildCardPath() {
  87         return InstanceIdentifier.create(Nodes.class).child(Node.class).augmentation(FlowCapableNode.class);
  88     }
  89 }