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