From 42887f769a3ac57963110925a1c2965c2b25bac6 Mon Sep 17 00:00:00 2001 From: Robert Varga Date: Sat, 30 Jan 2016 15:25:19 +0100 Subject: Add Virtual Bridge Domain implementation Change-Id: I427b709ac0af1ade365bc60148ddf778f7be458a Signed-off-by: Robert Varga --- .../io/fd/honeycomb/vbd/impl/BridgeDomain.java | 169 +++++++++++++++++++++ 1 file changed, 169 insertions(+) create mode 100644 vbd/impl/src/main/java/io/fd/honeycomb/vbd/impl/BridgeDomain.java (limited to 'vbd/impl/src/main/java/io/fd/honeycomb/vbd/impl/BridgeDomain.java') diff --git a/vbd/impl/src/main/java/io/fd/honeycomb/vbd/impl/BridgeDomain.java b/vbd/impl/src/main/java/io/fd/honeycomb/vbd/impl/BridgeDomain.java new file mode 100644 index 000000000..aff03b2a6 --- /dev/null +++ b/vbd/impl/src/main/java/io/fd/honeycomb/vbd/impl/BridgeDomain.java @@ -0,0 +1,169 @@ +/* + * 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 { + private static final Logger LOG = LoggerFactory.getLogger(BridgeDomain.class); + private final KeyedInstanceIdentifier topology; + + @GuardedBy("this") + private final BindingTransactionChain chain; + private final ListenerRegistration reg; + private Topology1 config; + + private BridgeDomain(final DataBroker dataBroker, final KeyedInstanceIdentifier 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, 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> changes) { + for (DataTreeModification c : changes) { + LOG.debug("Domain {} for {} processing change {}", this, topology, c); + + final DataObjectModification 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 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 child : mod.getModifiedChildren()) { + LOG.debug("Topology {} modified child {}", topology, child); + + if (Node.class.isAssignableFrom(child.getDataType())) { + modifyNode((DataObjectModification) 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 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 mod) { + LOG.debug("Topology {} configuration changed", topology); + + // FIXME: do something smarter + setConfiguration(mod.getDataAfter()); + } +} -- cgit 1.2.3-korg