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/*
* Copyright (c) 2017 Cisco and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.fd.honeycomb.infra.bgp;
import com.google.common.collect.Sets;
import com.google.inject.Inject;
import com.google.inject.name.Named;
import io.fd.honeycomb.translate.util.write.BindingBrokerWriter;
import io.fd.honeycomb.translate.write.WriterFactory;
import io.fd.honeycomb.translate.write.registry.ModifiableWriterRegistryBuilder;
import org.opendaylight.controller.md.sal.binding.api.DataBroker;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.routes.Ipv4Routes;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.routes.ipv4.routes.Ipv4Route;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.labeled.unicast.rev150525.labeled.unicast.LabelStack;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.labeled.unicast.rev150525.labeled.unicast.routes.LabeledUnicastRoutes;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.labeled.unicast.rev150525.labeled.unicast.routes.list.LabeledUnicastRoute;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.Attributes;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.attributes.LocalPref;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.attributes.Origin;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.ApplicationRib;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.rib.Tables;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.next.hop.c.next.hop.ipv4.next.hop._case.Ipv4NextHop;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
/**
* {@link WriterFactory} for BGP Application RIB write integration with HC writer registry.
* Uses BindingBrokerWriter to write routes via dedicated broker that, unlike
* {@link io.fd.honeycomb.data.impl.DataBroker DataBroker}, supports tx chains and DOMDataChangeListener registration
* extensively used by ODL's bgp.
*
* As a bonus BGP routes persisted and available for read via RESTCONF/NETCONF.
*/
final class ApplicationRibWriterFactory implements WriterFactory {
@Inject
@Named(BgpModule.HONEYCOMB_BGP)
private DataBroker dataBroker;
private static final InstanceIdentifier<ApplicationRib> AR_IID =
InstanceIdentifier.create(ApplicationRib.class);
private static final InstanceIdentifier<Tables> TABLES_IID = AR_IID.child(Tables.class);
private static final InstanceIdentifier<Ipv4Routes> IPV4_ROUTES_IID = TABLES_IID.child((Class) Ipv4Routes.class);
private static final InstanceIdentifier<Ipv4Route> IPV4_ROUTE_IID = IPV4_ROUTES_IID.child(Ipv4Route.class);
private static final InstanceIdentifier<LabeledUnicastRoutes> LABELED_UNICAST_ROUTES_IID = TABLES_IID.child((Class) LabeledUnicastRoutes.class);
private static final InstanceIdentifier<LabeledUnicastRoute> LABELED_UNICAST_ROUTE_IID = LABELED_UNICAST_ROUTES_IID.child(LabeledUnicastRoute.class);
// TODO (HONEYCOMB-359):
// BGP models are huge, we need some kind of wildcarded subtree writer, that works for whole subtree.
// 1) we can either move checking handledTypes to writers (getHandledTypes, isAffected, writer.getHandedTypes, ...)
// but then precondition check in flatWriterRegistry might be slower (we need to check if we have all writers
// in order to avoid unnecessary reverts).
//
// 2) alternative is to compute all child nodes during initialization (might introduce some footprint penalty).
@Override
public void init(final ModifiableWriterRegistryBuilder registry) {
registry.subtreeAdd(
Sets.newHashSet(
TABLES_IID,
IPV4_ROUTES_IID,
IPV4_ROUTES_IID.child(Ipv4Route.class),
IPV4_ROUTE_IID.child(Attributes.class),
IPV4_ROUTE_IID.child(Attributes.class).child(Origin.class),
IPV4_ROUTE_IID.child(Attributes.class).child(LocalPref.class),
IPV4_ROUTE_IID.child(Attributes.class).child(Ipv4NextHop.class),
LABELED_UNICAST_ROUTES_IID,
LABELED_UNICAST_ROUTE_IID,
LABELED_UNICAST_ROUTE_IID.child(Attributes.class),
LABELED_UNICAST_ROUTE_IID.child(Attributes.class).child(Origin.class),
LABELED_UNICAST_ROUTE_IID.child(Attributes.class).child(LocalPref.class),
LABELED_UNICAST_ROUTE_IID.child(Attributes.class).child(Ipv4NextHop.class),
LABELED_UNICAST_ROUTE_IID.child(LabelStack.class)
),
new BindingBrokerWriter<>(InstanceIdentifier.create(ApplicationRib.class), dataBroker)
);
}
}
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