pcep/tunnel-provider/src/main/java/org/opendaylight/bgpcep/pcep/tunnel/provider/NodeChangedListener.java

   1 /*
   2  * Copyright (c) 2013 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.bgpcep.pcep.tunnel.provider;
   9
  10 import java.util.Map.Entry;
  11 import java.util.concurrent.ExecutionException;
  12 import java.util.concurrent.Future;
  13
  14 import org.opendaylight.controller.md.sal.common.api.TransactionStatus;
  15 import org.opendaylight.controller.md.sal.common.api.data.DataChangeEvent;
  16 import org.opendaylight.controller.sal.binding.api.data.DataChangeListener;
  17 import org.opendaylight.controller.sal.binding.api.data.DataModificationTransaction;
  18 import org.opendaylight.controller.sal.binding.api.data.DataProviderService;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.SymbolicPathName;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.pcep.client.attributes.path.computation.client.ReportedLsps;
  21 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.LinkId;
  22 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  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.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.LinkKey;
  26 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  27 import org.opendaylight.yangtools.yang.binding.DataObject;
  28 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  29 import org.opendaylight.yangtools.yang.common.RpcResult;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 import com.google.common.base.Preconditions;
  34
  35 final class NodeChangedListener implements DataChangeListener {
  36         private static final Logger LOG = LoggerFactory.getLogger(NodeChangedListener.class);
  37         private final InstanceIdentifier<Topology> target;
  38         private final DataProviderService dataProvider;
  39
  40         NodeChangedListener(final DataProviderService dataProvider, final InstanceIdentifier<Topology> target) {
  41                 this.dataProvider = Preconditions.checkNotNull(dataProvider);
  42                 this.target = Preconditions.checkNotNull(target);
  43         }
  44
  45         private void remove(final DataModificationTransaction trans, final InstanceIdentifier<?> id) {
  46                 if (Node.class.equals(id.getTargetType())) {
  47                         // FIXME: implement this
  48                 } else if (ReportedLsps.class.equals(id.getTargetType())) {
  49                         // FIXME: implement this
  50                 } else {
  51                         LOG.debug("Ignoring changed instance {}", id);
  52                 }
  53         }
  54
  55         private void create(final DataModificationTransaction trans, final InstanceIdentifier<?> id, final DataObject obj) {
  56                 // FIXME: implement this
  57         }
  58
  59         @Override
  60         public void onDataChanged(final DataChangeEvent<InstanceIdentifier<?>, DataObject> change) {
  61                 final DataModificationTransaction trans = dataProvider.beginTransaction();
  62
  63                 for (final InstanceIdentifier<?> i : change.getRemovedOperationalData()) {
  64                         remove(trans, i);
  65                 }
  66
  67                 for (final Entry<InstanceIdentifier<?>, DataObject> e : change.getUpdatedOperationalData().entrySet()) {
  68                         remove(trans, e.getKey());
  69                         create(trans, e.getKey(), e.getValue());
  70                 }
  71
  72                 for (final Entry<InstanceIdentifier<?>, DataObject> e : change.getCreatedOperationalData().entrySet()) {
  73                         create(trans, e.getKey(), e.getValue());
  74                 }
  75
  76                 final Future<RpcResult<TransactionStatus>> f = trans.commit();
  77
  78                 // FIXME: change to a subscribtion once that is possible
  79                 try {
  80                         f.get();
  81                 } catch (InterruptedException | ExecutionException e) {
  82                         LOG.error("Failed to propagate a topology change, target topology became inconsistent", e);
  83                 }
  84         }
  85
  86         public static InstanceIdentifier<Link> linkIdentifier(final InstanceIdentifier<Topology> topology,
  87                         final NodeId node, final SymbolicPathName name) {
  88                 return InstanceIdentifier.builder(topology).
  89                                 node(Link.class, new LinkKey(new LinkId(node.getValue() + "/lsp/" + name))).toInstance();
  90         }
  91 }