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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.write.factory;
import static com.google.common.base.Preconditions.checkNotNull;
import io.fd.hc2vpp.routing.write.factory.base.ClassifierContextHolder;
import io.fd.hc2vpp.routing.write.trait.RouteRequestProducer;
import io.fd.hc2vpp.v3po.vppclassifier.VppClassifierContextManager;
import io.fd.honeycomb.translate.MappingContext;
import io.fd.vpp.jvpp.core.dto.IpAddDelRoute;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv6Prefix;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.routing.rev140524.SpecialNextHopGrouping;
public class SpecialNextHopRequestFactory extends ClassifierContextHolder
implements RouteRequestProducer {
private SpecialNextHopRequestFactory(final VppClassifierContextManager classifierContextManager) {
super(classifierContextManager);
}
public static SpecialNextHopRequestFactory forClassifierContext(
@Nonnull final VppClassifierContextManager classifierContextManager) {
return new SpecialNextHopRequestFactory(classifierContextManager);
}
public IpAddDelRoute createIpv4SpecialHopRequest(final boolean add,
@Nonnull final org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.ipv4.unicast.routing.rev140524.routing.routing.instance.routing.protocols.routing.protocol._static.routes.ipv4.Route route,
@Nonnull final MappingContext mappingContext,
@Nonnull final SpecialNextHopGrouping.SpecialNextHop flagsVariant) {
checkNotNull(route, "Route cannot be null");
checkNotNull(mappingContext, "Mapping Context cannot be null");
checkNotNull(flagsVariant, "Flags variant cannot be null");
return resolveFlags(getSpecialHopRequest(add, route.getDestinationPrefix()), flagsVariant);
}
public IpAddDelRoute createIpv6SpecialHopRequest(final boolean add,
@Nonnull final org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.ipv6.unicast.routing.rev140525.routing.routing.instance.routing.protocols.routing.protocol._static.routes.ipv6.Route route,
@Nonnull final MappingContext mappingContext,
@Nonnull final SpecialNextHopGrouping.SpecialNextHop flagsVariant) {
checkNotNull(route, "Route cannot be null");
checkNotNull(mappingContext, "Mapping Context cannot be null");
checkNotNull(flagsVariant, "Flags variant cannot be null");
return resolveFlags(getSpecialHopRequest(add, route.getDestinationPrefix()), flagsVariant);
}
private IpAddDelRoute getSpecialHopRequest(final boolean isAdd, @Nonnull final Ipv6Prefix destinationAddress) {
return flaglessAddDelRouteRequest(booleanToByte(isAdd), 0, null, DEFAULT_HOP_WEIGHT, BYTE_TRUE,
ipv6AddressPrefixToArray(destinationAddress), extractPrefix(destinationAddress.getValue()), BYTE_FALSE,
DEFAULT_VNI, DEFAULT_VNI, DEFAULT_CLASSIFY_TABLE_INDEX, BYTE_FALSE);
}
private IpAddDelRoute getSpecialHopRequest(final boolean isAdd, @Nonnull final Ipv4Prefix destinationAddress) {
return flaglessAddDelRouteRequest(booleanToByte(isAdd), 0, null, DEFAULT_HOP_WEIGHT, BYTE_FALSE,
ipv4AddressPrefixToArray(destinationAddress), extractPrefix(destinationAddress.getValue()), BYTE_FALSE,
DEFAULT_VNI, DEFAULT_VNI, DEFAULT_CLASSIFY_TABLE_INDEX, BYTE_FALSE);
}
private IpAddDelRoute resolveFlags(IpAddDelRoute request,
final SpecialNextHopGrouping.SpecialNextHop flagsVariant) {
switch (flagsVariant) {
case Blackhole:
return resolveAsBlackholeVariant(request);
case Unreachable:
return resolveAsUnreachableVariant(request);
case Prohibit:
return resolveAsProhibitedVariant(request);
case Receive:
return resolveAsReceiveVariant(request);
default:
throw new IllegalArgumentException("Unsupported type");
}
}
private IpAddDelRoute resolveAsBlackholeVariant(IpAddDelRoute request) {
return bindFlags(request, true, false, false, false);
}
private IpAddDelRoute resolveAsReceiveVariant(IpAddDelRoute request) {
return bindFlags(request, false, true, false, false);
}
private IpAddDelRoute resolveAsUnreachableVariant(IpAddDelRoute request) {
return bindFlags(request, false, false, true, false);
}
private IpAddDelRoute resolveAsProhibitedVariant(IpAddDelRoute request) {
return bindFlags(request, false, false, false, true);
}
private IpAddDelRoute bindFlags(IpAddDelRoute request, final boolean isDrop, final boolean isReceive,
final boolean isUnreachable, final boolean isProhibited) {
request.isDrop = booleanToByte(isDrop);
request.isLocal = booleanToByte(isReceive);
request.isUnreach = booleanToByte(isUnreachable);
request.isProhibit = booleanToByte(isProhibited);
return request;
}
}
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