applications/topology-manager/src/main/java/org/opendaylight/openflowplugin/applications/topology/manager/FlowCapableTopologyExporter.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.openflowplugin.applications.topology.manager;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.annotations.VisibleForTesting;
  13 import java.util.Optional;
  14 import java.util.Set;
  15 import java.util.concurrent.ExecutionException;
  16 import org.opendaylight.mdsal.binding.api.NotificationService.CompositeListener;
  17 import org.opendaylight.mdsal.binding.api.NotificationService.CompositeListener.Component;
  18 import org.opendaylight.mdsal.binding.api.NotificationService.Listener;
  19 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  20 import org.opendaylight.openflowplugin.common.txchain.TransactionChainManager;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.LinkDiscovered;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.LinkRemoved;
  23 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  24 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Link;
  25 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 class FlowCapableTopologyExporter {
  30     private static final Logger LOG = LoggerFactory.getLogger(FlowCapableTopologyExporter.class);
  31
  32     private final InstanceIdentifier<Topology> iiToTopology;
  33     private final OperationProcessor processor;
  34
  35     FlowCapableTopologyExporter(final OperationProcessor processor, final InstanceIdentifier<Topology> topology) {
  36         this.processor = requireNonNull(processor);
  37         iiToTopology = requireNonNull(topology);
  38     }
  39
  40     CompositeListener toListener() {
  41         return new CompositeListener(Set.of(
  42             new Component(LinkDiscovered.class, (Listener<LinkDiscovered>) this::onLinkDiscovered),
  43             new Component(LinkRemoved.class, (Listener<LinkRemoved>) this::onLinkRemoved)));
  44     }
  45
  46     @VisibleForTesting
  47     void onLinkDiscovered(final LinkDiscovered notification) {
  48         processor.enqueueOperation(new OnLinkDiscovered(notification));
  49     }
  50
  51     @VisibleForTesting
  52     void onLinkRemoved(final LinkRemoved notification) {
  53         processor.enqueueOperation(new OnLinkRemoved(notification));
  54     }
  55
  56     private abstract static class AbstractLinkOperation implements TopologyOperation {
  57         private final org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.Link link;
  58
  59         AbstractLinkOperation(
  60                 final org.opendaylight.yang.gen.v1.urn.opendaylight.flow.topology.discovery.rev130819.Link link) {
  61             this.link = requireNonNull(link);
  62         }
  63
  64         @Override
  65         public final void applyOperation(final TransactionChainManager manager) {
  66             applyOperation(manager, FlowCapableNodeMapping.toTopologyLink(link));
  67         }
  68
  69         abstract void applyOperation(TransactionChainManager manager, Link link);
  70     }
  71
  72     private final class OnLinkDiscovered extends AbstractLinkOperation {
  73         OnLinkDiscovered(final LinkDiscovered notification) {
  74             super(notification);
  75         }
  76
  77         @Override
  78         public void applyOperation(final TransactionChainManager manager, final Link link) {
  79             manager.mergeToTransaction(LogicalDatastoreType.OPERATIONAL,
  80                 TopologyManagerUtil.linkPath(link, iiToTopology), link, true);
  81         }
  82
  83         @Override
  84         public String toString() {
  85             return "onLinkDiscovered";
  86         }
  87     }
  88
  89     private final class OnLinkRemoved extends AbstractLinkOperation {
  90         OnLinkRemoved(final LinkRemoved notification) {
  91             super(notification);
  92         }
  93
  94         @Override
  95         public void applyOperation(final TransactionChainManager manager, final Link link) {
  96             final var linkPath = TopologyManagerUtil.linkPath(link, iiToTopology);
  97
  98             Optional<Link> linkOptional = Optional.empty();
  99             try {
 100                 // read that checks if link exists (if we do not do this we might get an exception on delete)
 101                 linkOptional = manager.readFromTransaction(LogicalDatastoreType.OPERATIONAL, linkPath).get();
 102             } catch (InterruptedException | ExecutionException e) {
 103                 LOG.warn("Error occurred when trying to read Link: {}", e.getMessage());
 104                 LOG.debug("Error occurred when trying to read Link.. ", e);
 105             }
 106             if (linkOptional.isPresent()) {
 107                 manager.addDeleteOperationToTxChain(LogicalDatastoreType.OPERATIONAL, linkPath);
 108             }
 109         }
 110
 111         @Override
 112         public String toString() {
 113             return "onLinkRemoved";
 114         }
 115     }
 116 }