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.ReadWriteTransaction;
  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.framework.SessionListenerFactory;
  28 import org.opendaylight.protocol.pcep.PCEPSession;
  29 import org.opendaylight.protocol.pcep.PCEPSessionListener;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.AddLspArgs;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.EnsureLspOperationalInput;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.OperationResult;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.RemoveLspArgs;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.TopologyTypes1;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.TopologyTypes1Builder;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.UpdateLspArgs;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.topology.pcep.type.TopologyPcepBuilder;
  38 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  39 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopologyBuilder;
  40 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  41 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  42 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyBuilder;
  43 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  44 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  45 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.TopologyTypesBuilder;
  46 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  47 import org.slf4j.Logger;
  48 import org.slf4j.LoggerFactory;
  49
  50 /**
  51  *
  52  */
  53 final class ServerSessionManager implements SessionListenerFactory<PCEPSessionListener>, AutoCloseable, TopologySessionRPCs, PCEPTopologyProviderRuntimeMXBean {
  54     private static final Logger LOG = LoggerFactory.getLogger(ServerSessionManager.class);
  55     private static final long DEFAULT_HOLD_STATE_NANOS = TimeUnit.MINUTES.toNanos(5);
  56
  57     private final Map<NodeId, TopologySessionListener> nodes = new HashMap<>();
  58     private final Map<NodeId, TopologyNodeState> state = new HashMap<>();
  59     private final TopologySessionListenerFactory listenerFactory;
  60     private final InstanceIdentifier<Topology> topology;
  61     private final DataBroker broker;
  62     private Optional<PCEPTopologyProviderRuntimeRegistration> runtimeRootRegistration = Optional.absent();
  63
  64     public ServerSessionManager(final DataBroker broker, final InstanceIdentifier<Topology> topology,
  65             final TopologySessionListenerFactory listenerFactory) throws ReadFailedException, TransactionCommitFailedException {
  66         this.broker = Preconditions.checkNotNull(broker);
  67         this.topology = Preconditions.checkNotNull(topology);
  68         this.listenerFactory = Preconditions.checkNotNull(listenerFactory);
  69
  70
  71         // Make sure the topology does not exist
  72         final ReadWriteTransaction tx = broker.newReadWriteTransaction();
  73         final Optional<?> c = tx.read(LogicalDatastoreType.OPERATIONAL, topology).checkedGet();
  74         Preconditions.checkArgument(!c.isPresent(), "Topology %s already exists", topology);
  75
  76         // create empty network-topology if not exists
  77         tx.merge(LogicalDatastoreType.OPERATIONAL, InstanceIdentifier.builder(NetworkTopology.class).build(), new NetworkTopologyBuilder().build());
  78         // Now create the base topology
  79         final TopologyKey k = InstanceIdentifier.keyOf(topology);
  80         tx.put(LogicalDatastoreType.OPERATIONAL, topology, new TopologyBuilder().setKey(k).setTopologyId(k.getTopologyId()).setTopologyTypes(
  81                 new TopologyTypesBuilder().addAugmentation(TopologyTypes1.class,
  82                         new TopologyTypes1Builder().setTopologyPcep(new TopologyPcepBuilder().build()).build()).build()).setNode(
  83                                 new ArrayList<Node>()).build());
  84
  85         tx.submit().checkedGet();
  86     }
  87
  88     private static NodeId createNodeId(final InetAddress addr) {
  89         return new NodeId("pcc://" + addr.getHostAddress());
  90     }
  91
  92     synchronized void releaseNodeState(final TopologyNodeState nodeState, final PCEPSession session) {
  93         LOG.debug("Node {} unbound", nodeState.getNodeId());
  94         this.nodes.remove(createNodeId(session.getRemoteAddress()));
  95         nodeState.released();
  96     }
  97
  98     synchronized TopologyNodeState takeNodeState(final InetAddress address, final TopologySessionListener sessionListener) {
  99         final NodeId id = createNodeId(address);
 100
 101         LOG.debug("Node {} requested by listener {}", id, sessionListener);
 102         TopologyNodeState ret = this.state.get(id);
 103
 104         if (ret == null) {
 105             ret = new TopologyNodeState(this.broker, this.topology, id, DEFAULT_HOLD_STATE_NANOS);
 106             LOG.debug("Created topology node {} for id {} at {}", ret, id, ret.getNodeId());
 107             this.state.put(id, ret);
 108         }
 109         // FIXME: else check for conflicting session
 110
 111         ret.taken();
 112         this.nodes.put(id, sessionListener);
 113         LOG.debug("Node {} bound to listener {}", id, sessionListener);
 114         return ret;
 115     }
 116
 117     @Override
 118     public PCEPSessionListener getSessionListener() {
 119         return this.listenerFactory.createTopologySessionListener(this);
 120     }
 121
 122     @Override
 123     public synchronized ListenableFuture<OperationResult> addLsp(final AddLspArgs input) {
 124         // Get the listener corresponding to the node
 125         final TopologySessionListener l = this.nodes.get(input.getNode());
 126         if (l == null) {
 127             LOG.debug("Session for node {} not found", input.getNode());
 128             return OperationResults.UNSENT.future();
 129         }
 130
 131         return l.addLsp(input);
 132     }
 133
 134     @Override
 135     public synchronized ListenableFuture<OperationResult> removeLsp(final RemoveLspArgs input) {
 136         // Get the listener corresponding to the node
 137         final TopologySessionListener l = this.nodes.get(input.getNode());
 138         if (l == null) {
 139             LOG.debug("Session for node {} not found", input.getNode());
 140             return OperationResults.UNSENT.future();
 141         }
 142
 143         return l.removeLsp(input);
 144     }
 145
 146     @Override
 147     public synchronized ListenableFuture<OperationResult> updateLsp(final UpdateLspArgs input) {
 148         // Get the listener corresponding to the node
 149         final TopologySessionListener l = this.nodes.get(input.getNode());
 150         if (l == null) {
 151             LOG.debug("Session for node {} not found", input.getNode());
 152             return OperationResults.UNSENT.future();
 153         }
 154
 155         return l.updateLsp(input);
 156     }
 157
 158     @Override
 159     public synchronized ListenableFuture<OperationResult> ensureLspOperational(final EnsureLspOperationalInput input) {
 160         // Get the listener corresponding to the node
 161         final TopologySessionListener l = this.nodes.get(input.getNode());
 162         if (l == null) {
 163             LOG.debug("Session for node {} not found", input.getNode());
 164             return OperationResults.UNSENT.future();
 165         }
 166
 167         return l.ensureLspOperational(input);
 168     }
 169
 170     @Override
 171     public void close() throws TransactionCommitFailedException {
 172         if (this.runtimeRootRegistration.isPresent()) {
 173             this.runtimeRootRegistration.get().close();
 174         }
 175         for (final TopologySessionListener sessionListener : this.nodes.values()) {
 176             sessionListener.close();
 177         }
 178         for (final TopologyNodeState nodeState : this.state.values()) {
 179             nodeState.close();
 180         }
 181         final WriteTransaction t = this.broker.newWriteOnlyTransaction();
 182         t.delete(LogicalDatastoreType.OPERATIONAL, this.topology);
 183         t.submit().checkedGet();
 184     }
 185
 186     public void registerRuntimeRootRegistartion(final PCEPTopologyProviderRuntimeRegistrator runtimeRootRegistrator) {
 187         this.runtimeRootRegistration = Optional.of(runtimeRootRegistrator.register(this));
 188     }
 189
 190     public Optional<PCEPTopologyProviderRuntimeRegistration> getRuntimeRootRegistration() {
 191         return this.runtimeRootRegistration;
 192     }
 193 }