Wipe operational state
[bgpcep.git] / pcep / topology-provider / src / main / java / org / opendaylight / bgpcep / pcep / topology / provider / ServerSessionManager.java
index 72b28f868a45fa53f0b61f2c8dc5d92645f35d12..eb25a305e4aed216aa9292a2b8049e8449dc248a 100644 (file)
@@ -9,22 +9,22 @@ package org.opendaylight.bgpcep.pcep.topology.provider;
 
 import com.google.common.base.Optional;
 import com.google.common.base.Preconditions;
-import com.google.common.util.concurrent.FutureCallback;
-import com.google.common.util.concurrent.Futures;
 import com.google.common.util.concurrent.ListenableFuture;
-
+import java.net.InetAddress;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Map;
-import java.util.concurrent.ExecutionException;
 import java.util.concurrent.TimeUnit;
-
+import org.opendaylight.controller.config.yang.pcep.topology.provider.PCEPTopologyProviderRuntimeMXBean;
+import org.opendaylight.controller.config.yang.pcep.topology.provider.PCEPTopologyProviderRuntimeRegistration;
+import org.opendaylight.controller.config.yang.pcep.topology.provider.PCEPTopologyProviderRuntimeRegistrator;
 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
-import org.opendaylight.controller.md.sal.binding.api.ReadTransaction;
-import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
+import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
 import org.opendaylight.protocol.framework.SessionListenerFactory;
+import org.opendaylight.protocol.pcep.PCEPSession;
 import org.opendaylight.protocol.pcep.PCEPSessionListener;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.AddLspArgs;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.EnsureLspOperationalInput;
@@ -34,15 +34,12 @@ import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.TopologyTypes1Builder;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.UpdateLspArgs;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev131024.topology.pcep.type.TopologyPcepBuilder;
-import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
-import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopologyBuilder;
 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyBuilder;
 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.TopologyTypesBuilder;
-import org.opendaylight.yangtools.yang.binding.DataObject;
 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -50,7 +47,7 @@ import org.slf4j.LoggerFactory;
 /**
  *
  */
-final class ServerSessionManager implements SessionListenerFactory<PCEPSessionListener>, AutoCloseable, TopologySessionRPCs {
+final class ServerSessionManager implements SessionListenerFactory<PCEPSessionListener>, AutoCloseable, TopologySessionRPCs, PCEPTopologyProviderRuntimeMXBean {
     private static final Logger LOG = LoggerFactory.getLogger(ServerSessionManager.class);
     private static final long DEFAULT_HOLD_STATE_NANOS = TimeUnit.MINUTES.toNanos(5);
 
@@ -58,142 +55,114 @@ final class ServerSessionManager implements SessionListenerFactory<PCEPSessionLi
     private final Map<NodeId, TopologyNodeState> state = new HashMap<>();
     private final TopologySessionListenerFactory listenerFactory;
     private final InstanceIdentifier<Topology> topology;
-    private final DataBroker dataProvider;
+    private final DataBroker broker;
+    private Optional<PCEPTopologyProviderRuntimeRegistration> runtimeRootRegistration = Optional.absent();
 
-    public ServerSessionManager(final DataBroker dataProvider, final InstanceIdentifier<Topology> topology,
-            final TopologySessionListenerFactory listenerFactory) {
-        this.dataProvider = Preconditions.checkNotNull(dataProvider);
+    public ServerSessionManager(final DataBroker broker, final InstanceIdentifier<Topology> topology,
+            final TopologySessionListenerFactory listenerFactory) throws ReadFailedException, TransactionCommitFailedException {
+        this.broker = Preconditions.checkNotNull(broker);
         this.topology = Preconditions.checkNotNull(topology);
         this.listenerFactory = Preconditions.checkNotNull(listenerFactory);
 
-        // FIXME: should migrated to transaction chain
-        final ReadWriteTransaction tx = dataProvider.newReadWriteTransaction();
-
-        // Make sure the topology does not exist
-        final Optional<?> c;
-        try {
-            c = tx.read(LogicalDatastoreType.OPERATIONAL, topology).get();
-        } catch (InterruptedException | ExecutionException e) {
-            throw new IllegalStateException("Failed to ensure topology presence", e);
-        }
-        Preconditions.checkArgument(!c.isPresent(), "Topology %s already exists", topology);
-
-        // create empty network-topology is not exists
-        tx.put(LogicalDatastoreType.OPERATIONAL, InstanceIdentifier.builder(NetworkTopology.class).build(), new NetworkTopologyBuilder().build());
         // Now create the base topology
         final TopologyKey k = InstanceIdentifier.keyOf(topology);
+        final WriteTransaction tx = broker.newWriteOnlyTransaction();
         tx.put(LogicalDatastoreType.OPERATIONAL, topology, new TopologyBuilder().setKey(k).setTopologyId(k.getTopologyId()).setTopologyTypes(
                 new TopologyTypesBuilder().addAugmentation(TopologyTypes1.class,
                         new TopologyTypes1Builder().setTopologyPcep(new TopologyPcepBuilder().build()).build()).build()).setNode(
-                                new ArrayList<Node>()).build());
-
-        Futures.addCallback(tx.submit(), new FutureCallback<Void>() {
-            @Override
-            public void onSuccess(final Void result) {
-                LOG.trace("Topology {} created successfully", topology);
-            }
-
-            @Override
-            public void onFailure(final Throwable t) {
-                LOG.error("Failed to create topology {}", topology, t);
-            }
-        });
+                                new ArrayList<Node>()).build(), true);
+        tx.submit().checkedGet();
     }
 
-    public void releaseNodeState(final TopologyNodeState nodeState) {
+    private static NodeId createNodeId(final InetAddress addr) {
+        return new NodeId("pcc://" + addr.getHostAddress());
+    }
+
+    synchronized void releaseNodeState(final TopologyNodeState nodeState, final PCEPSession session) {
         LOG.debug("Node {} unbound", nodeState.getNodeId());
-        this.nodes.remove(nodeState.getNodeId());
+        this.nodes.remove(createNodeId(session.getRemoteAddress()));
         nodeState.released();
     }
 
-    synchronized TopologyNodeState takeNodeState(final NodeId id, final TopologySessionListener sessionListener) {
-        LOG.debug("Node {} bound to listener {}", id, sessionListener);
+    synchronized TopologyNodeState takeNodeState(final InetAddress address, final TopologySessionListener sessionListener) {
+        final NodeId id = createNodeId(address);
 
+        LOG.debug("Node {} requested by listener {}", id, sessionListener);
         TopologyNodeState ret = this.state.get(id);
+
         if (ret == null) {
-            ret = new TopologyNodeState(id, DEFAULT_HOLD_STATE_NANOS);
+            ret = new TopologyNodeState(this.broker, this.topology, id, DEFAULT_HOLD_STATE_NANOS);
+            LOG.debug("Created topology node {} for id {} at {}", ret, id, ret.getNodeId());
             this.state.put(id, ret);
         }
+        // FIXME: else check for conflicting session
 
-        this.nodes.put(id, sessionListener);
         ret.taken();
+        this.nodes.put(id, sessionListener);
+        LOG.debug("Node {} bound to listener {}", id, sessionListener);
         return ret;
     }
 
     @Override
     public PCEPSessionListener getSessionListener() {
-        return listenerFactory.createTopologySessionListener(this);
+        return this.listenerFactory.createTopologySessionListener(this);
     }
 
-    @Override
-    public synchronized ListenableFuture<OperationResult> addLsp(final AddLspArgs input) {
+    private synchronized TopologySessionListener checkSessionPresence(final NodeId nodeId) {
         // Get the listener corresponding to the node
-        final TopologySessionListener l = this.nodes.get(input.getNode());
+        final TopologySessionListener l = this.nodes.get(nodeId);
         if (l == null) {
-            LOG.debug("Session for node {} not found", input.getNode());
-            return OperationResults.UNSENT.future();
+            LOG.debug("Session for node {} not found", nodeId);
+            return null;
         }
+        return l;
+    }
 
-        return l.addLsp(input);
+    @Override
+    public synchronized ListenableFuture<OperationResult> addLsp(final AddLspArgs input) {
+        final TopologySessionListener l = checkSessionPresence(input.getNode());
+        return (l != null) ? l.addLsp(input) : OperationResults.UNSENT.future();
     }
 
     @Override
     public synchronized ListenableFuture<OperationResult> removeLsp(final RemoveLspArgs input) {
-        // Get the listener corresponding to the node
-        final TopologySessionListener l = this.nodes.get(input.getNode());
-        if (l == null) {
-            LOG.debug("Session for node {} not found", input.getNode());
-            return OperationResults.UNSENT.future();
-        }
-
-        return l.removeLsp(input);
+        final TopologySessionListener l = checkSessionPresence(input.getNode());
+        return (l != null) ? l.removeLsp(input) : OperationResults.UNSENT.future();
     }
 
     @Override
     public synchronized ListenableFuture<OperationResult> updateLsp(final UpdateLspArgs input) {
-        // Get the listener corresponding to the node
-        final TopologySessionListener l = this.nodes.get(input.getNode());
-        if (l == null) {
-            LOG.debug("Session for node {} not found", input.getNode());
-            return OperationResults.UNSENT.future();
-        }
-
-        return l.updateLsp(input);
+        final TopologySessionListener l = checkSessionPresence(input.getNode());
+        return (l != null) ? l.updateLsp(input) : OperationResults.UNSENT.future();
     }
 
     @Override
     public synchronized ListenableFuture<OperationResult> ensureLspOperational(final EnsureLspOperationalInput input) {
-        // Get the listener corresponding to the node
-        final TopologySessionListener l = this.nodes.get(input.getNode());
-        if (l == null) {
-            LOG.debug("Session for node {} not found", input.getNode());
-            return OperationResults.UNSENT.future();
-        }
-
-        return l.ensureLspOperational(input);
-    }
-
-    InstanceIdentifier<Topology> getTopology() {
-        return topology;
-    }
-
-    WriteTransaction beginTransaction() {
-        return dataProvider.newWriteOnlyTransaction();
+        final TopologySessionListener l = checkSessionPresence(input.getNode());
+        return (l != null) ? l.ensureLspOperational(input) : OperationResults.UNSENT.future();
     }
 
-    ReadWriteTransaction rwTransaction() {
-        return dataProvider.newReadWriteTransaction();
+    @Override
+    public void close() throws TransactionCommitFailedException {
+        if (this.runtimeRootRegistration.isPresent()) {
+            this.runtimeRootRegistration.get().close();
+        }
+        for (final TopologySessionListener sessionListener : this.nodes.values()) {
+            sessionListener.close();
+        }
+        for (final TopologyNodeState nodeState : this.state.values()) {
+            nodeState.close();
+        }
+        final WriteTransaction t = this.broker.newWriteOnlyTransaction();
+        t.delete(LogicalDatastoreType.OPERATIONAL, this.topology);
+        t.submit().checkedGet();
     }
 
-    <T extends DataObject> ListenableFuture<Optional<T>> readOperationalData(final InstanceIdentifier<T> id) {
-        final ReadTransaction t = dataProvider.newReadOnlyTransaction();
-        return t.read(LogicalDatastoreType.OPERATIONAL, id);
+    public void registerRuntimeRootRegistartion(final PCEPTopologyProviderRuntimeRegistrator runtimeRootRegistrator) {
+        this.runtimeRootRegistration = Optional.of(runtimeRootRegistrator.register(this));
     }
 
-    @Override
-    public void close() throws InterruptedException, ExecutionException {
-        final WriteTransaction t = this.dataProvider.newWriteOnlyTransaction();
-        t.delete(LogicalDatastoreType.OPERATIONAL, this.topology);
-        t.submit().get();
+    public Optional<PCEPTopologyProviderRuntimeRegistration> getRuntimeRootRegistration() {
+        return this.runtimeRootRegistration;
     }
 }