--- /dev/null
+/*
+ * Copyright (c) 2016 Cisco Systems, Inc. and others. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package io.fd.honeycomb.vbd.impl;
+
+import com.google.common.base.Preconditions;
+import java.util.Collection;
+import javax.annotation.concurrent.GuardedBy;
+import org.opendaylight.controller.md.sal.binding.api.BindingTransactionChain;
+import org.opendaylight.controller.md.sal.binding.api.DataBroker;
+import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
+import org.opendaylight.controller.md.sal.binding.api.DataObjectModification.ModificationType;
+import org.opendaylight.controller.md.sal.binding.api.DataTreeChangeListener;
+import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
+import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
+import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.topology.rev160129.Topology1;
+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.TopologyKey;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
+import org.opendaylight.yangtools.concepts.ListenerRegistration;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Implementation of a single Virtual Bridge Domain. It is bound to a particular network topology instance, manages
+ * bridge members and projects state into the operational data store.
+ */
+final class BridgeDomain implements DataTreeChangeListener<Topology> {
+ private static final Logger LOG = LoggerFactory.getLogger(BridgeDomain.class);
+ private final KeyedInstanceIdentifier<Topology, TopologyKey> topology;
+
+ @GuardedBy("this")
+ private final BindingTransactionChain chain;
+ private final ListenerRegistration<?> reg;
+ private Topology1 config;
+
+ private BridgeDomain(final DataBroker dataBroker, final KeyedInstanceIdentifier<Topology, TopologyKey> topology,
+ final BindingTransactionChain chain) {
+ this.topology = Preconditions.checkNotNull(topology);
+ this.chain = Preconditions.checkNotNull(chain);
+
+ reg = dataBroker.registerDataTreeChangeListener(
+ new DataTreeIdentifier<>(LogicalDatastoreType.CONFIGURATION, topology), this);
+ }
+
+ static BridgeDomain create(final DataBroker dataBroker,
+ final KeyedInstanceIdentifier<Topology, TopologyKey> topology, final BindingTransactionChain chain) {
+
+ LOG.debug("Wiping operational state of {}", topology);
+
+ final WriteTransaction tx = chain.newWriteOnlyTransaction();
+ tx.delete(LogicalDatastoreType.OPERATIONAL, topology);
+ tx.submit();
+
+ return new BridgeDomain(dataBroker, topology, chain);
+ }
+
+ synchronized void forceStop() {
+ LOG.info("Bridge domain {} for {} going down", this, topology);
+ reg.close();
+ chain.close();
+ LOG.info("Bridge domain {} for {} is down", this, topology);
+ }
+
+ synchronized void stop() {
+ LOG.debug("Bridge domain {} for {} shutting down", this, topology);
+
+ final WriteTransaction tx = chain.newWriteOnlyTransaction();
+ tx.delete(LogicalDatastoreType.OPERATIONAL, topology);
+ tx.submit();
+ chain.close();
+ }
+
+ @Override
+ public synchronized void onDataTreeChanged(final Collection<DataTreeModification<Topology>> changes) {
+ for (DataTreeModification<Topology> c : changes) {
+ LOG.debug("Domain {} for {} processing change {}", this, topology, c);
+
+ final DataObjectModification<Topology> mod = c.getRootNode();
+ switch (mod.getModificationType()) {
+ case DELETE:
+ LOG.debug("Topology {} deleted, expecting shutdown", topology);
+ break;
+ case SUBTREE_MODIFIED:
+ // First check if the configuration has changed
+ final DataObjectModification<Topology1> newConfig = mod.getModifiedAugmentation(Topology1.class);
+ if (newConfig != null) {
+ if (newConfig.getModificationType() != ModificationType.DELETE) {
+ LOG.debug("Topology {} modified configuration {}", topology, newConfig);
+ updateConfiguration(newConfig);
+ } else {
+ // FIXME: okay, what can we do about this one?
+ LOG.error("Topology {} configuration deleted, good luck!", topology);
+ }
+ }
+
+ for (DataObjectModification<? extends DataObject> child : mod.getModifiedChildren()) {
+ LOG.debug("Topology {} modified child {}", topology, child);
+
+ if (Node.class.isAssignableFrom(child.getDataType())) {
+ modifyNode((DataObjectModification<Node>) child);
+ }
+ }
+
+ break;
+ case WRITE:
+ final Topology data = mod.getDataAfter();
+
+ // Read configuration
+ final Topology1 config = data.getAugmentation(Topology1.class);
+ if (config != null) {
+ setConfiguration(config);
+ } else {
+ LOG.error("Topology {} has no configuration, good luck!", topology);
+ }
+
+ // FIXME: deal with nodes
+
+ break;
+ default:
+ LOG.warn("Unhandled topology modification {}", mod);
+ break;
+ }
+ }
+ }
+
+ private void modifyNode(final DataObjectModification<Node> child) {
+ switch (child.getModificationType()) {
+ case DELETE:
+ LOG.debug("Topology {} node {} deleted", topology, child.getIdentifier());
+ // FIXME: do something
+ break;
+ case SUBTREE_MODIFIED:
+ LOG.debug("Topology {} node {} modified", topology, child.getIdentifier());
+ // FIXME: do something
+ break;
+ case WRITE:
+ LOG.debug("Topology {} node {} created", topology, child.getIdentifier());
+ // FIXME: do something
+ break;
+ default:
+ LOG.warn("Unhandled node modification {} in topology {}", child, topology);
+ break;
+ }
+ }
+
+ private void setConfiguration(final Topology1 config) {
+ LOG.debug("Topology {} configuration set to {}", topology, config);
+
+ this.config = config;
+ }
+
+ @GuardedBy("this")
+ private void updateConfiguration(final DataObjectModification<Topology1> mod) {
+ LOG.debug("Topology {} configuration changed", topology);
+
+ // FIXME: do something smarter
+ setConfiguration(mod.getDataAfter());
+ }
+}
Code Review / honeycomb.git / blobdiff