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/*
* 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.Optional;
import com.google.common.base.Preconditions;
import com.google.common.util.concurrent.CheckedFuture;
import com.google.common.util.concurrent.FutureCallback;
import com.google.common.util.concurrent.Futures;
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.MountPoint;
import org.opendaylight.controller.md.sal.binding.api.MountPointService;
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.TransactionCommitFailedException;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.external.reference.rev160129.ExternalReference;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.Vpp;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.BridgeDomains;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.bridge.domains.BridgeDomainBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.bridge.domains.BridgeDomainKey;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.topology.rev160129.NodeVbridgeAugment;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.topology.rev160129.TopologyVbridgeAugment;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.topology.rev160129.network.topology.topology.node.BridgeMember;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.topology.rev160129.network.topology.topology.node.BridgeMemberBuilder;
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.NodeId;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
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.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.node.attributes.SupportingNode;
import org.opendaylight.yangtools.concepts.ListenerRegistration;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
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 final MountPointService mountService;
private TopologyVbridgeAugment config;
private final String bridgeDomainName;
private final InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.bridge.domains.BridgeDomain> iiBridgeDomainOnVPP;
private final String iiBridgeDomainOnVPPRest;
private final DataBroker dataBroker;
private BridgeDomain(final DataBroker dataBroker, final MountPointService mountService, final KeyedInstanceIdentifier<Topology, TopologyKey> topology,
final BindingTransactionChain chain) {
this.topology = Preconditions.checkNotNull(topology);
this.chain = Preconditions.checkNotNull(chain);
this.mountService = mountService;
this.bridgeDomainName = topology.getKey().getTopologyId().getValue();
this.iiBridgeDomainOnVPPRest = provideIIBrdigeDomainOnVPPRest();
this.iiBridgeDomainOnVPP = InstanceIdentifier.create(Vpp.class)
.child(BridgeDomains.class)
.child(org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.bridge.domains.BridgeDomain.class, new BridgeDomainKey(bridgeDomainName));
this.dataBroker = dataBroker;
reg = dataBroker.registerDataTreeChangeListener(
new DataTreeIdentifier<>(LogicalDatastoreType.CONFIGURATION, topology), this);
}
private String provideIIBrdigeDomainOnVPPRest() {
final StringBuilder strBuilder = new StringBuilder();
strBuilder.append("v3po:vpp/bridge-domains/bridge-domain/");
strBuilder.append(bridgeDomainName);
return strBuilder.toString();
}
static BridgeDomain create(final DataBroker dataBroker,
MountPointService mountService, 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, mountService, 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<TopologyVbridgeAugment> newConfig = mod.getModifiedAugmentation(TopologyVbridgeAugment.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, newConfig.getDataAfter());
}
}
break;
case WRITE:
final Topology data = mod.getDataAfter();
// Read configuration
final TopologyVbridgeAugment config = data.getAugmentation(TopologyVbridgeAugment.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, final TopologyVbridgeAugment topologyVbridgeAugment) {
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());
createNode(child.getDataAfter(), topologyVbridgeAugment);
break;
default:
LOG.warn("Unhandled node modification {} in topology {}", child, topology);
break;
}
}
private void createNode(final Node node, final TopologyVbridgeAugment topologyVbridgeAugment) {
for (SupportingNode supportingNode : node.getSupportingNode()) {
final NodeId nodeMount = supportingNode.getNodeRef();
final TopologyId topologyMount = supportingNode.getTopologyRef();
final KeyedInstanceIdentifier<Node, NodeKey> iiToMount = InstanceIdentifier
.create(NetworkTopology.class)
.child(Topology.class, new TopologyKey(topologyMount))
.child(Node.class, new NodeKey(nodeMount));
final Optional<MountPoint> vppMountOption = mountService.getMountPoint(iiToMount);
if (vppMountOption.isPresent()) {
final MountPoint vppMount = vppMountOption.get();
addVppToBridgeDomain(topologyVbridgeAugment, vppMount, node);
}
}
}
private void addVppToBridgeDomain(final TopologyVbridgeAugment topologyVbridgeAugment, final MountPoint vppMount, final Node node) {
final Optional<DataBroker> dataBrokerOpt = vppMount.getService(DataBroker.class);
if (dataBrokerOpt.isPresent()) {
final DataBroker vppDataBroker = dataBrokerOpt.get();
final WriteTransaction wTx = vppDataBroker.newWriteOnlyTransaction();
wTx.put(LogicalDatastoreType.OPERATIONAL, iiBridgeDomainOnVPP, prepareNewBridgeDomainData(topologyVbridgeAugment));
final CheckedFuture<Void, TransactionCommitFailedException> addVppToBridgeDomainFuture = wTx.submit();
addSupportingBridgeDomain(addVppToBridgeDomainFuture, node);
}
}
private void addSupportingBridgeDomain(final CheckedFuture<Void, TransactionCommitFailedException> addVppToBridgeDomainFuture, final Node node) {
Futures.addCallback(addVppToBridgeDomainFuture, new FutureCallback() {
@Override
public void onSuccess(Object result) {
LOG.debug("Storing bridge member to operational DS....");
final BridgeMemberBuilder bridgeMemberBuilder = new BridgeMemberBuilder();
bridgeMemberBuilder.setSupportingBridgeDomain(new ExternalReference(iiBridgeDomainOnVPPRest));
final InstanceIdentifier<BridgeMember> iiToBridgeMember = topology.child(Node.class, node.getKey()).augmentation(NodeVbridgeAugment.class).child(BridgeMember.class);
final WriteTransaction wTx = chain.newWriteOnlyTransaction();
wTx.put(LogicalDatastoreType.OPERATIONAL, iiToBridgeMember, bridgeMemberBuilder.build(), true);
wTx.submit();
}
@Override
public void onFailure(Throwable t) {
//TODO handle this state
}
});
}
private org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.bridge.domains.BridgeDomain
prepareNewBridgeDomainData(TopologyVbridgeAugment topologyVbridgeAugment) {
final BridgeDomainBuilder bridgeDomainBuilder = new BridgeDomainBuilder(topologyVbridgeAugment);
bridgeDomainBuilder.setName(topology.getKey().getTopologyId().getValue());
return bridgeDomainBuilder.build();
}
private void setConfiguration(final TopologyVbridgeAugment config) {
LOG.debug("Topology {} configuration set to {}", topology, config);
this.config = config;
}
@GuardedBy("this")
private void updateConfiguration(final DataObjectModification<TopologyVbridgeAugment> mod) {
LOG.debug("Topology {} configuration changed", topology);
// FIXME: do something smarter
setConfiguration(mod.getDataAfter());
}
}
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