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/*
* Copyright (c) 2018 Bell Canada, Pantheon Technologies 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.srv6.write.steering;
import io.fd.hc2vpp.common.translate.util.FutureJVppCustomizer;
import io.fd.hc2vpp.srv6.util.Srv6Util;
import io.fd.hc2vpp.srv6.write.steering.request.L3SteeringRequest;
import io.fd.honeycomb.translate.spi.write.WriterCustomizer;
import io.fd.honeycomb.translate.write.WriteContext;
import io.fd.honeycomb.translate.write.WriteFailedException;
import io.fd.jvpp.core.future.FutureJVppCore;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.http.cisco.com.ns.yang.oc.srte.policy.rev170918.prefixes.properties.prefixes.Config;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpPrefix;
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.Ipv6Address;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv6Prefix;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
public class PrefixesConfigCustomizer extends FutureJVppCustomizer implements WriterCustomizer<Config> {
private static final IpPrefix
DEFAULT_IPV6_PREFIX = new IpPrefix(new Ipv6Prefix("::/0"));
private static final IpPrefix
DEFAULT_IPV4_PREFIX = new IpPrefix(new Ipv4Prefix("0.0.0.0/0"));
public PrefixesConfigCustomizer(@Nonnull final FutureJVppCore futureJVppCore) {
super(futureJVppCore);
}
private void writePrefixes(final @Nonnull InstanceIdentifier<Config> instanceIdentifier,
final @Nonnull Config config, final @Nonnull WriteContext writeContext,
final boolean isWrite)
throws WriteFailedException {
Ipv6Address bsid = Srv6Util.extractBsid(instanceIdentifier, writeContext, isWrite);
int vrfFib = Srv6Util.extractVrfFib(instanceIdentifier, writeContext, isWrite);
if (bsid == null) {
throw new WriteFailedException.CreateFailedException(instanceIdentifier, config,
new Throwable("Failed to extract BSID from policy for prefix"));
}
if (config.isPrefixesAll()) {
// forward all traffic to policy
writeL3Steering(vrfFib, instanceIdentifier, DEFAULT_IPV6_PREFIX, bsid, getFutureJVpp(), isWrite);
writeL3Steering(vrfFib, instanceIdentifier, DEFAULT_IPV4_PREFIX, bsid, getFutureJVpp(), isWrite);
}
}
private void writeL3Steering(int vrfFib, InstanceIdentifier instanceIdentifier, IpPrefix ipPrefix,
final Ipv6Address bsid, FutureJVppCore api, boolean isWrite)
throws WriteFailedException {
L3SteeringRequest request = new L3SteeringRequest(api);
request.setBindingSid(bsid);
request.setPrefix(ipPrefix);
request.setFibTableIndex(vrfFib);
if (isWrite) {
request.write(instanceIdentifier);
} else {
request.delete(instanceIdentifier);
}
}
@Override
public void writeCurrentAttributes(@Nonnull final InstanceIdentifier<Config> instanceIdentifier,
@Nonnull final Config config,
@Nonnull final WriteContext writeContext) throws WriteFailedException {
writePrefixes(instanceIdentifier, config, writeContext, true);
}
@Override
public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<Config> instanceIdentifier,
@Nonnull final Config config,
@Nonnull final WriteContext writeContext) throws WriteFailedException {
writePrefixes(instanceIdentifier, config, writeContext, false);
}
}
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