pcep/topology-provider/src/main/java/org/opendaylight/bgpcep/pcep/topology/provider/ServerSessionManager.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.topology.provider;
   9
  10 import com.google.common.base.Optional;
  11 import com.google.common.base.Preconditions;
  12 import com.google.common.util.concurrent.ListenableFuture;
  13 import java.net.InetAddress;
  14 import java.net.InetSocketAddress;
  15 import java.util.ArrayList;
  16 import java.util.HashMap;
  17 import java.util.Map;
  18 import java.util.concurrent.TimeUnit;
  19 import org.opendaylight.controller.config.yang.pcep.topology.provider.PCEPTopologyProviderRuntimeMXBean;
  20 import org.opendaylight.controller.config.yang.pcep.topology.provider.PCEPTopologyProviderRuntimeRegistration;
  21 import org.opendaylight.controller.config.yang.pcep.topology.provider.PCEPTopologyProviderRuntimeRegistrator;
  22 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  23 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  24 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  25 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  26 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  27 import org.opendaylight.protocol.pcep.PCEPPeerProposal;
  28 import org.opendaylight.protocol.pcep.PCEPSession;
  29 import org.opendaylight.protocol.pcep.PCEPSessionListener;
  30 import org.opendaylight.protocol.pcep.PCEPSessionListenerFactory;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.open.object.open.TlvsBuilder;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.AddLspArgs;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.EnsureLspOperationalInput;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.OperationResult;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.RemoveLspArgs;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.TopologyTypes1;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.TopologyTypes1Builder;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.TriggerInitialSyncArgs;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.UpdateLspArgs;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.topology.pcep.type.TopologyPcepBuilder;
  41 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  42 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  43 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyBuilder;
  44 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  45 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  46 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.TopologyTypesBuilder;
  47 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  48 import org.slf4j.Logger;
  49 import org.slf4j.LoggerFactory;
  50
  51 /**
  52  *
  53  */
  54 final class ServerSessionManager implements PCEPSessionListenerFactory, AutoCloseable, TopologySessionRPCs, PCEPTopologyProviderRuntimeMXBean, PCEPPeerProposal {
  55     private static final Logger LOG = LoggerFactory.getLogger(ServerSessionManager.class);
  56     private static final long DEFAULT_HOLD_STATE_NANOS = TimeUnit.MINUTES.toNanos(5);
  57
  58     private final Map<NodeId, TopologySessionListener> nodes = new HashMap<>();
  59     private final Map<NodeId, TopologyNodeState> state = new HashMap<>();
  60     private final TopologySessionListenerFactory listenerFactory;
  61     private final InstanceIdentifier<Topology> topology;
  62     private final DataBroker broker;
  63     private final PCEPStatefulPeerProposal peerProposal;
  64     private Optional<PCEPTopologyProviderRuntimeRegistration> runtimeRootRegistration = Optional.absent();
  65
  66     public ServerSessionManager(final DataBroker broker, final InstanceIdentifier<Topology> topology,
  67             final TopologySessionListenerFactory listenerFactory) throws ReadFailedException, TransactionCommitFailedException {
  68         this.broker = Preconditions.checkNotNull(broker);
  69         this.topology = Preconditions.checkNotNull(topology);
  70         this.listenerFactory = Preconditions.checkNotNull(listenerFactory);
  71         this.peerProposal = PCEPStatefulPeerProposal.createStatefulPeerProposal(this.broker, this.topology);
  72
  73         // Now create the base topology
  74         final TopologyKey k = InstanceIdentifier.keyOf(topology);
  75         final WriteTransaction tx = broker.newWriteOnlyTransaction();
  76         tx.put(LogicalDatastoreType.OPERATIONAL, topology, new TopologyBuilder().setKey(k).setTopologyId(k.getTopologyId()).setTopologyTypes(
  77                 new TopologyTypesBuilder().addAugmentation(TopologyTypes1.class,
  78                         new TopologyTypes1Builder().setTopologyPcep(new TopologyPcepBuilder().build()).build()).build()).setNode(
  79                                 new ArrayList<Node>()).build(), true);
  80         tx.submit().checkedGet();
  81     }
  82
  83     private static NodeId createNodeId(final InetAddress addr) {
  84         return new NodeId("pcc://" + addr.getHostAddress());
  85     }
  86
  87     synchronized void releaseNodeState(final TopologyNodeState nodeState, final PCEPSession session, final boolean persistNode) {
  88         LOG.debug("Node {} unbound", nodeState.getNodeId());
  89         this.nodes.remove(createNodeId(session.getRemoteAddress()));
  90         nodeState.released(persistNode);
  91     }
  92
  93     synchronized TopologyNodeState takeNodeState(final InetAddress address, final TopologySessionListener sessionListener, final boolean retrieveNode) {
  94         final NodeId id = createNodeId(address);
  95
  96         LOG.debug("Node {} requested by listener {}", id, sessionListener);
  97         TopologyNodeState ret = this.state.get(id);
  98
  99         if (ret == null) {
 100             ret = new TopologyNodeState(this.broker, this.topology, id, DEFAULT_HOLD_STATE_NANOS);
 101             LOG.debug("Created topology node {} for id {} at {}", ret, id, ret.getNodeId());
 102             this.state.put(id, ret);
 103         }
 104         // FIXME: else check for conflicting session
 105
 106         ret.taken(retrieveNode);
 107         this.nodes.put(id, sessionListener);
 108         LOG.debug("Node {} bound to listener {}", id, sessionListener);
 109         return ret;
 110     }
 111
 112     @Override
 113     public PCEPSessionListener getSessionListener() {
 114         return this.listenerFactory.createTopologySessionListener(this);
 115     }
 116
 117     private synchronized TopologySessionListener checkSessionPresence(final NodeId nodeId) {
 118         // Get the listener corresponding to the node
 119         final TopologySessionListener l = this.nodes.get(nodeId);
 120         if (l == null) {
 121             LOG.debug("Session for node {} not found", nodeId);
 122             return null;
 123         }
 124         return l;
 125     }
 126
 127     @Override
 128     public synchronized ListenableFuture<OperationResult> addLsp(final AddLspArgs input) {
 129         final TopologySessionListener l = checkSessionPresence(input.getNode());
 130         return (l != null) ? l.addLsp(input) : OperationResults.UNSENT.future();
 131     }
 132
 133     @Override
 134     public synchronized ListenableFuture<OperationResult> removeLsp(final RemoveLspArgs input) {
 135         final TopologySessionListener l = checkSessionPresence(input.getNode());
 136         return (l != null) ? l.removeLsp(input) : OperationResults.UNSENT.future();
 137     }
 138
 139     @Override
 140     public synchronized ListenableFuture<OperationResult> updateLsp(final UpdateLspArgs input) {
 141         final TopologySessionListener l = checkSessionPresence(input.getNode());
 142         return (l != null) ? l.updateLsp(input) : OperationResults.UNSENT.future();
 143     }
 144
 145     @Override
 146     public synchronized ListenableFuture<OperationResult> ensureLspOperational(final EnsureLspOperationalInput input) {
 147         final TopologySessionListener l = checkSessionPresence(input.getNode());
 148         return (l != null) ? l.ensureLspOperational(input) : OperationResults.UNSENT.future();
 149     }
 150
 151     @Override
 152     public synchronized ListenableFuture<OperationResult> triggerInitialSync(final TriggerInitialSyncArgs input) {
 153         final TopologySessionListener l = checkSessionPresence(input.getNode());
 154         return (l != null) ? l.triggerInitialSync(input) : OperationResults.UNSENT.future();
 155     }
 156
 157     @Override
 158     public void close() throws TransactionCommitFailedException {
 159         if (this.runtimeRootRegistration.isPresent()) {
 160             this.runtimeRootRegistration.get().close();
 161         }
 162         for (final TopologySessionListener sessionListener : this.nodes.values()) {
 163             sessionListener.close();
 164         }
 165         for (final TopologyNodeState nodeState : this.state.values()) {
 166             nodeState.close();
 167         }
 168         final WriteTransaction t = this.broker.newWriteOnlyTransaction();
 169         t.delete(LogicalDatastoreType.OPERATIONAL, this.topology);
 170         t.submit().checkedGet();
 171     }
 172
 173     public void registerRuntimeRootRegistartion(final PCEPTopologyProviderRuntimeRegistrator runtimeRootRegistrator) {
 174         this.runtimeRootRegistration = Optional.of(runtimeRootRegistrator.register(this));
 175     }
 176
 177     public Optional<PCEPTopologyProviderRuntimeRegistration> getRuntimeRootRegistration() {
 178         return this.runtimeRootRegistration;
 179     }
 180
 181     @Override
 182     public void setPeerSpecificProposal(final InetSocketAddress address, final TlvsBuilder openBuilder) {
 183         Preconditions.checkNotNull(address);
 184         peerProposal.setPeerProposal(createNodeId(address.getAddress()), openBuilder);
 185     }
 186 }