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