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/*
* Copyright (c) 2016 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.hc2vpp.routing.read;
import com.google.common.base.Optional;
import io.fd.hc2vpp.common.translate.util.MultiNamingContext;
import io.fd.hc2vpp.common.translate.util.NamingContext;
import io.fd.hc2vpp.routing.RoutingConfiguration;
import io.fd.hc2vpp.routing.naming.Ipv4RouteNamesFactory;
import io.fd.hc2vpp.routing.trait.Ipv4RoutePathParser;
import io.fd.hc2vpp.routing.trait.RouteMapper;
import io.fd.honeycomb.translate.MappingContext;
import io.fd.honeycomb.translate.read.ReadContext;
import io.fd.honeycomb.translate.read.ReadFailedException;
import io.fd.honeycomb.translate.spi.read.ListReaderCustomizer;
import io.fd.honeycomb.translate.util.read.cache.DumpCacheManager;
import io.fd.vpp.jvpp.core.dto.IpFibDetails;
import io.fd.vpp.jvpp.core.dto.IpFibDetailsReplyDump;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.ipv4.unicast.routing.rev180319.VppIpv4RouteAttributesAugmentation;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.ipv4.unicast.routing.rev180319.VppIpv4RouteAttributesAugmentationBuilder;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.ipv4.unicast.routing.rev180319.routing.control.plane.protocols.control.plane.protocol._static.routes.ipv4.route.VppIpv4RouteBuilder;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.ipv4.unicast.routing.rev180313.routing.control.plane.protocols.control.plane.protocol._static.routes.Ipv4Builder;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.ipv4.unicast.routing.rev180313.routing.control.plane.protocols.control.plane.protocol._static.routes.ipv4.Route;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.ipv4.unicast.routing.rev180313.routing.control.plane.protocols.control.plane.protocol._static.routes.ipv4.RouteBuilder;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.ipv4.unicast.routing.rev180313.routing.control.plane.protocols.control.plane.protocol._static.routes.ipv4.RouteKey;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.routing.rev180313.routing.control.plane.protocols.ControlPlaneProtocol;
import org.opendaylight.yangtools.concepts.Builder;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
final class Ipv4RouteCustomizer
implements ListReaderCustomizer<Route, RouteKey, RouteBuilder>, RouteMapper, Ipv4RoutePathParser {
private final DumpCacheManager<IpFibDetailsReplyDump, Void> ipv4RoutesDumpManager;
private final RoutingConfiguration configuration;
private final MultiNamingContext routeHopContext;
private final NamingContext interfaceContext;
private final NamingContext routesContext;
private final NamingContext routingProtocolContext;
private final Ipv4RouteNamesFactory namesFactory;
Ipv4RouteCustomizer(@Nonnull final DumpCacheManager<IpFibDetailsReplyDump, Void> ipv4RoutesDumpManager,
@Nonnull final RoutingConfiguration configuration,
@Nonnull final MultiNamingContext routeHopContext,
@Nonnull final NamingContext interfaceContext,
@Nonnull final NamingContext routesContext,
@Nonnull final NamingContext routingProtocolContext) {
this.ipv4RoutesDumpManager = ipv4RoutesDumpManager;
this.configuration = configuration;
this.interfaceContext = interfaceContext;
this.routeHopContext = routeHopContext;
this.routesContext = routesContext;
this.routingProtocolContext = routingProtocolContext;
this.namesFactory = new Ipv4RouteNamesFactory(interfaceContext, routingProtocolContext);
}
@Nonnull
@Override
public List<RouteKey> getAllIds(@Nonnull final InstanceIdentifier<Route> instanceIdentifier,
@Nonnull final ReadContext readContext) throws ReadFailedException {
final Optional<IpFibDetailsReplyDump> ipv4RoutesDump =
ipv4RoutesDumpManager.getDump(instanceIdentifier, readContext.getModificationCache());
final String protocolName = instanceIdentifier.firstKeyOf(ControlPlaneProtocol.class).getName();
final int protocolTableId = routingProtocolContext.getIndex(protocolName, readContext.getMappingContext());
return ipv4RoutesDump.isPresent()
? ipv4RoutesDump.get().ipFibDetails.stream()
.filter(details -> protocolTableId == details.tableId)
.map(ipFibDetails -> toKey(ipFibDetails, readContext.getMappingContext()))
.collect(Collectors.toList())
: Collections.emptyList();
}
/**
* route id is represented as number, but there's no index in dumped data,
* so index is assigned to name formatted as tableId_address_addressLength(should be unique combination)
*/
private RouteKey toKey(final IpFibDetails details, final MappingContext mappingContext) {
String routeName = namesFactory.uniqueRouteName(details, mappingContext);
// first condition excludes data written manually, second one data that has been already learned
if (!routesContext.containsIndex(routeName, mappingContext)) {
String learnedRouteName = nameWithPrefix(configuration.getLearnedRouteNamePrefix(), routeName);
if (!routesContext.containsIndex(learnedRouteName, mappingContext)) {
routesContext.addName(learnedRouteName, mappingContext);
}
return keyForLearnedName(learnedRouteName);
}
return keyForName(routeName);
}
private RouteKey keyForName(final String name) {
// example learned-protocol-0_0-0-0-0_0
return new RouteKey(namesFactory.ipv4PrefixFromUniqueRouteName(name));
}
private RouteKey keyForLearnedName(final String name) {
// example learned-route_learned-protocol-0_0-0-0-0_0
return new RouteKey(namesFactory.ipv4PrefixFromUniqueRouteName(name.replace("learned-route_", "")));
}
@Override
public void merge(@Nonnull final Builder<? extends DataObject> builder, @Nonnull final List<Route> list) {
Ipv4Builder.class.cast(builder).setRoute(list);
}
@Nonnull
@Override
public RouteBuilder getBuilder(@Nonnull final InstanceIdentifier<Route> instanceIdentifier) {
return new RouteBuilder();
}
@Override
public void readCurrentAttributes(@Nonnull final InstanceIdentifier<Route> instanceIdentifier,
@Nonnull final RouteBuilder routeBuilder, @Nonnull final ReadContext readContext)
throws ReadFailedException {
final RouteKey key = instanceIdentifier.firstKeyOf(Route.class);
final String protocolName = instanceIdentifier.firstKeyOf(ControlPlaneProtocol.class).getName();
final String mappedName = namesFactory.uniqueRouteName(protocolName, key.getDestinationPrefix());
final int protocolTableId = routingProtocolContext.getIndex(protocolName, readContext.getMappingContext());
final Optional<IpFibDetailsReplyDump> ipv4RoutesDump =
ipv4RoutesDumpManager.getDump(instanceIdentifier, readContext.getModificationCache());
if (ipv4RoutesDump.isPresent() && !ipv4RoutesDump.get().ipFibDetails.isEmpty()) {
final java.util.Optional<IpFibDetails> opDetail = ipv4RoutesDump.get().ipFibDetails.stream()
.filter(details -> protocolTableId == details.tableId)
.filter(details -> equalsWithConfigOrLearned(configuration.getLearnedRouteNamePrefix(), mappedName,
namesFactory.uniqueRouteName(details, readContext.getMappingContext())))
.findAny();
if (opDetail.isPresent()) {
final IpFibDetails detail = opDetail.get();
routeBuilder.setNextHop(
resolveHopType(mappedName, Arrays.asList(detail.path), interfaceContext, routeHopContext,
readContext.getMappingContext(), namesFactory))
.withKey(key)
.setDestinationPrefix(toIpv4Prefix(detail.address, toJavaByte(detail.addressLength)))
.addAugmentation(VppIpv4RouteAttributesAugmentation.class,
new VppIpv4RouteAttributesAugmentationBuilder()
.setVppIpv4Route(new VppIpv4RouteBuilder()
.build())
.build());
}
}
}
}
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