opendaylight/netconf/abstract-topology/src/main/java/org/opendaylight/netconf/topology/example/ExampleTopologyManagerCallback.java

   1 /*
   2  * Copyright (c) 2015 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
   9 package org.opendaylight.netconf.topology.example;
  10
  11 import akka.actor.ActorRef;
  12 import akka.actor.ActorSystem;
  13 import akka.actor.TypedActor;
  14 import com.google.common.util.concurrent.FutureCallback;
  15 import com.google.common.util.concurrent.Futures;
  16 import com.google.common.util.concurrent.ListenableFuture;
  17 import java.util.HashMap;
  18 import java.util.Map;
  19 import javax.annotation.Nonnull;
  20 import javax.annotation.Nullable;
  21 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  22 import org.opendaylight.netconf.topology.NodeManager;
  23 import org.opendaylight.netconf.topology.NodeManagerCallback.NodeManagerCallbackFactory;
  24 import org.opendaylight.netconf.topology.TopologyManagerCallback;
  25 import org.opendaylight.netconf.topology.util.BaseNodeManager.BaseNodeManagerBuilder;
  26 import org.opendaylight.netconf.topology.util.NodeWriter;
  27 import org.opendaylight.netconf.topology.util.NoopRoleChangeStrategy;
  28 import org.opendaylight.netconf.topology.util.SalNodeWriter;
  29 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  30 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  31 import org.slf4j.Logger;
  32 import org.slf4j.LoggerFactory;
  33
  34 public class ExampleTopologyManagerCallback implements TopologyManagerCallback {
  35
  36     private static final Logger LOG = LoggerFactory.getLogger(ExampleTopologyManagerCallback.class);
  37
  38     private final DataBroker dataBroker;
  39     private final ActorSystem actorSystem;
  40     private boolean isMaster;
  41
  42     private final String topologyId;
  43     private final NodeWriter naSalNodeWriter;
  44     private final Map<NodeId, NodeManager> nodes = new HashMap<>();
  45     private final NodeManagerCallbackFactory nodeHandlerFactory;
  46
  47     public ExampleTopologyManagerCallback(final ActorSystem actorSystem,
  48                                           final DataBroker dataBroker,
  49                                           final String topologyId,
  50                                           final NodeManagerCallbackFactory nodeHandlerFactory) {
  51         this(actorSystem, dataBroker, topologyId, nodeHandlerFactory, new SalNodeWriter(dataBroker, topologyId));
  52     }
  53
  54     public ExampleTopologyManagerCallback(final ActorSystem actorSystem,
  55                                           final DataBroker dataBroker,
  56                                           final String topologyId,
  57                                           final NodeManagerCallbackFactory nodeHandlerFactory,
  58                                           final NodeWriter naSalNodeWriter) {
  59         this(actorSystem, dataBroker, topologyId, nodeHandlerFactory, naSalNodeWriter, false);
  60
  61     }
  62
  63     public ExampleTopologyManagerCallback(final ActorSystem actorSystem,
  64                                           final DataBroker dataBroker,
  65                                           final String topologyId,
  66                                           final NodeManagerCallbackFactory nodeHandlerFactory,
  67                                           final NodeWriter naSalNodeWriter,
  68                                           boolean isMaster) {
  69         this.dataBroker = dataBroker;
  70         this.actorSystem = actorSystem;
  71         this.topologyId = topologyId;
  72         this.nodeHandlerFactory = nodeHandlerFactory;
  73         this.naSalNodeWriter = naSalNodeWriter;
  74
  75         this.isMaster = isMaster;
  76     }
  77
  78     @Override
  79     public ListenableFuture<Node> onNodeCreated(NodeId nodeId, Node node) {
  80         // Init node admin and a writer for it
  81
  82         // TODO let end user code notify the baseNodeManager about state changes and handle them here on topology level
  83         final NodeManager naBaseNodeManager =
  84                 createNodeManager(nodeId);
  85
  86         nodes.put(nodeId, naBaseNodeManager);
  87
  88         // Set initial state ? in every peer or just master ? TODO
  89         if (isMaster) {
  90             naSalNodeWriter.init(nodeId, naBaseNodeManager.getInitialState(nodeId, node));
  91         }
  92
  93         // trigger connect on this node
  94         return naBaseNodeManager.onNodeCreated(nodeId, node);
  95     }
  96
  97     @Override
  98     public ListenableFuture<Node> onNodeUpdated(final NodeId nodeId, final Node node) {
  99         // Set initial state
 100         naSalNodeWriter.init(nodeId, nodes.get(nodeId).getInitialState(nodeId, node));
 101
 102         // Trigger onNodeUpdated only on this node
 103         return nodes.get(nodeId).onNodeUpdated(nodeId, node);
 104     }
 105
 106     @Override
 107     public ListenableFuture<Void> onNodeDeleted(final NodeId nodeId) {
 108         // Trigger delete only on this node
 109         final ListenableFuture<Void> future = nodes.get(nodeId).onNodeDeleted(nodeId);
 110         Futures.addCallback(future, new FutureCallback<Void>() {
 111             @Override
 112             public void onSuccess(Void result) {
 113                 // remove proxy from node list and stop the actor
 114                 final NodeManager remove = nodes.remove(nodeId);
 115                 TypedActor.get(actorSystem).stop(remove);
 116             }
 117
 118             @Override
 119             public void onFailure(Throwable t) {
 120                 // NOOP will be handled on higher level
 121             }
 122         });
 123         return future;
 124     }
 125
 126     @Nonnull
 127     @Override
 128     public ListenableFuture<Node> getCurrentStatusForNode(@Nonnull NodeId nodeId) {
 129         return nodes.get(nodeId).getCurrentStatusForNode(nodeId);
 130     }
 131
 132     @Override
 133     public void onRoleChanged(RoleChangeDTO roleChangeDTO) {
 134         isMaster = roleChangeDTO.isOwner();
 135         // our post-election logic
 136     }
 137
 138     private NodeManager createNodeManager(NodeId nodeId) {
 139         return new BaseNodeManagerBuilder().setNodeId(nodeId.getValue())
 140                 .setActorContext(TypedActor.context())
 141                 .setDelegateFactory(nodeHandlerFactory)
 142                 .setRoleChangeStrategy(new NoopRoleChangeStrategy())
 143                 .setTopologyId(topologyId)
 144                 .build();
 145     }
 146
 147     @Override
 148     public void onReceive(Object o, ActorRef actorRef) {
 149
 150     }
 151
 152     @Nonnull
 153     @Override
 154     public Node getInitialState(@Nonnull NodeId nodeId, @Nonnull Node configNode) {
 155         return nodes.get(nodeId).getInitialState(nodeId, configNode);
 156     }
 157
 158     @Nonnull
 159     @Override
 160     public Node getFailedState(@Nonnull NodeId nodeId, @Nullable Node configNode) {
 161         return nodes.get(nodeId).getFailedState(nodeId, configNode);
 162     }
 163 }