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authorRobert Varga <nite@hq.sk>2016-01-30 15:25:19 +0100
committerRobert Varga <nite@hq.sk>2016-01-31 18:21:24 +0100
commit42887f769a3ac57963110925a1c2965c2b25bac6 (patch)
tree4d5f47c3ad19767c99964dc5a8c80391e9242c99 /vbd/impl/src
parentcb22508bc344123078a1caea7d39da49583f0ab0 (diff)
Add Virtual Bridge Domain implementation
Change-Id: I427b709ac0af1ade365bc60148ddf778f7be458a Signed-off-by: Robert Varga <nite@hq.sk>
Diffstat (limited to 'vbd/impl/src')
-rw-r--r--vbd/impl/src/main/java/io/fd/honeycomb/vbd/impl/BridgeDomain.java169
-rw-r--r--vbd/impl/src/main/java/io/fd/honeycomb/vbd/impl/TopologyMonitor.java159
-rw-r--r--vbd/impl/src/main/java/io/fd/honeycomb/vbd/impl/VirtualBridgeDomainManager.java65
3 files changed, 393 insertions, 0 deletions
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<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());
+ }
+}
diff --git a/vbd/impl/src/main/java/io/fd/honeycomb/vbd/impl/TopologyMonitor.java b/vbd/impl/src/main/java/io/fd/honeycomb/vbd/impl/TopologyMonitor.java
new file mode 100644
index 000000000..b2e52c37e
--- /dev/null
+++ b/vbd/impl/src/main/java/io/fd/honeycomb/vbd/impl/TopologyMonitor.java
@@ -0,0 +1,159 @@
+/*
+ * 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 java.util.HashMap;
+import java.util.Map;
+import java.util.Map.Entry;
+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.DataTreeChangeListener;
+import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
+import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
+import org.opendaylight.controller.md.sal.common.api.data.TransactionChain;
+import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.topology.rev160129.network.topology.topology.topology.types.VbridgeTopology;
+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.yangtools.yang.binding.KeyedInstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Class responsible for monitoring /network-topology/topology and activating a {@link BridgeDomain} when a particular
+ * topology is marked as a bridge domain.
+ */
+final class TopologyMonitor implements DataTreeChangeListener<VbridgeTopology>, AutoCloseable {
+ private static final Logger LOG = LoggerFactory.getLogger(TopologyMonitor.class);
+
+ @GuardedBy("this")
+ private final Map<TopologyKey, BridgeDomain> domains = new HashMap<>();
+ private final DataBroker dataBroker;
+
+ TopologyMonitor(final DataBroker dataBroker) {
+ this.dataBroker = Preconditions.checkNotNull(dataBroker);
+ }
+
+ @Override
+ public synchronized void onDataTreeChanged(final Collection<DataTreeModification<VbridgeTopology>> changes) {
+ for (DataTreeModification<VbridgeTopology> c : changes) {
+ @SuppressWarnings("unchecked")
+ final KeyedInstanceIdentifier<Topology, TopologyKey> topology =
+ (KeyedInstanceIdentifier<Topology, TopologyKey>) c.getRootPath().getRootIdentifier()
+ .firstIdentifierOf(Topology.class);
+
+ Preconditions.checkArgument(!topology.isWildcarded(), "Wildcard topology %s is not supported", topology);
+
+ final DataObjectModification<VbridgeTopology> mod = c.getRootNode();
+ switch (mod.getModificationType()) {
+ case DELETE:
+ LOG.debug("Topology {} removed", topology);
+ stopDomain(topology);
+ break;
+ case WRITE:
+ LOG.debug("Topology {} added", topology);
+ startDomain(topology);
+ break;
+ default:
+ LOG.warn("Ignoring unhandled modification type {}", mod.getModificationType());
+ break;
+ }
+ }
+ }
+
+ private synchronized void completeDomain(final KeyedInstanceIdentifier<Topology, TopologyKey> topology) {
+ LOG.debug("Bridge domain for {} completed operation", topology);
+ domains.remove(topology);
+
+ synchronized (domains) {
+ domains.notify();
+ }
+ }
+
+ private synchronized void restartDomain(final KeyedInstanceIdentifier<Topology, TopologyKey> topology) {
+ final BridgeDomain prev = domains.remove(topology);
+ if (prev == null) {
+ LOG.warn("No domain for {}, not restarting", topology);
+ return;
+ }
+
+ prev.forceStop();
+ startDomain(topology);
+ }
+
+ @GuardedBy("this")
+ private void startDomain(final KeyedInstanceIdentifier<Topology, TopologyKey> topology) {
+ final BridgeDomain prev = domains.get(topology.getKey());
+ if (prev != null) {
+ LOG.warn("Bridge domain {} for {} already started", prev, topology);
+ return;
+ }
+
+ LOG.debug("Starting bridge domain for {}", topology);
+
+ final BindingTransactionChain chain = dataBroker.createTransactionChain(new TransactionChainListener() {
+ @Override
+ public void onTransactionChainSuccessful(final TransactionChain<?, ?> chain) {
+ completeDomain(topology);
+ }
+
+ @Override
+ public void onTransactionChainFailed(final TransactionChain<?, ?> chain,
+ final AsyncTransaction<?, ?> transaction, final Throwable cause) {
+ LOG.warn("Bridge domain for {} failed, restarting it", cause);
+ restartDomain(topology);
+ }
+ });
+
+ final BridgeDomain domain = BridgeDomain.create(dataBroker, topology, chain);
+ domains.put(topology.getKey(), domain);
+
+ LOG.debug("Bridge domain {} for {} started", domain, topology);
+ }
+
+ @GuardedBy("this")
+ private void stopDomain(final KeyedInstanceIdentifier<Topology, TopologyKey> topology) {
+ final BridgeDomain domain = domains.remove(topology.getKey());
+ if (domain == null) {
+ LOG.warn("Bridge domain for {} not present", topology);
+ return;
+ }
+
+ domain.stop();
+ }
+
+ @Override
+ public synchronized void close() {
+ LOG.debug("Topology monitor {} shut down started", this);
+
+ for (Entry<TopologyKey, BridgeDomain> e : domains.entrySet()) {
+ LOG.debug("Shutting down bridge domain {} (key {})", e.getValue(), e.getKey());
+ e.getValue().stop();
+ }
+
+ while (!domains.isEmpty()) {
+ LOG.debug("Waiting for domains for {} to complete", domains.keySet());
+ synchronized (domains) {
+ try {
+ domains.wait();
+ } catch (InterruptedException e) {
+ LOG.warn("Interrupted while waiting for domain shutdown, {} have not completed yet",
+ domains.keySet(), e);
+ break;
+ }
+ }
+ }
+
+ LOG.debug("Topology monitor {} shut down completed", this);
+ }
+}
diff --git a/vbd/impl/src/main/java/io/fd/honeycomb/vbd/impl/VirtualBridgeDomainManager.java b/vbd/impl/src/main/java/io/fd/honeycomb/vbd/impl/VirtualBridgeDomainManager.java
new file mode 100644
index 000000000..37da73159
--- /dev/null
+++ b/vbd/impl/src/main/java/io/fd/honeycomb/vbd/impl/VirtualBridgeDomainManager.java
@@ -0,0 +1,65 @@
+/*
+ * 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 javax.annotation.Nonnull;
+import org.opendaylight.controller.md.sal.binding.api.DataBroker;
+import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
+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.TopologyTypes1;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.topology.rev160129.network.topology.topology.topology.types.VbridgeTopology;
+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.network.topology.Topology;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.TopologyTypes;
+import org.opendaylight.yangtools.concepts.ListenerRegistration;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Tip for the Virtual Bridge Domain implementation. This class is instantiated when the application is started
+ * and {@link #close()}d when it is shut down.
+ */
+public final class VirtualBridgeDomainManager implements AutoCloseable {
+ private static final Logger LOG = LoggerFactory.getLogger(VirtualBridgeDomainManager.class);
+ private static final DataTreeIdentifier<VbridgeTopology> LISTEN_TREE =
+ new DataTreeIdentifier<>(LogicalDatastoreType.CONFIGURATION,
+ InstanceIdentifier.builder(NetworkTopology.class).child(Topology.class).child(TopologyTypes.class)
+ .augmentation(TopologyTypes1.class).child(VbridgeTopology.class).build());
+
+ private final ListenerRegistration<TopologyMonitor> reg;
+ private boolean closed;
+
+ private VirtualBridgeDomainManager(final ListenerRegistration<TopologyMonitor> reg) {
+ this.reg = Preconditions.checkNotNull(reg);
+ }
+
+ public static VirtualBridgeDomainManager create(@Nonnull final DataBroker dataBroker) {
+ final ListenerRegistration<TopologyMonitor> reg =
+ dataBroker.registerDataTreeChangeListener(LISTEN_TREE, new TopologyMonitor(dataBroker));
+
+ return new VirtualBridgeDomainManager(reg);
+ }
+
+ @Override
+ public void close() {
+ if (!closed) {
+ LOG.debug("Virtual Bridge Domain manager shut down started");
+
+ final TopologyMonitor monitor = reg.getInstance();
+ reg.close();
+ LOG.debug("Topology monitor {} unregistered", monitor);
+ monitor.close();
+
+ closed = true;
+ LOG.debug("Virtual Bridge Domain manager shut down completed");
+ }
+ }
+}