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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.hc2vpp.l3.write.ipv6;
import io.fd.hc2vpp.common.translate.util.FutureJVppCustomizer;
import io.fd.hc2vpp.common.translate.util.NamingContext;
import io.fd.hc2vpp.l3.utils.ip.write.IpWriter;
import io.fd.honeycomb.translate.spi.write.ListWriterCustomizer;
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.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev180220.interfaces.Interface;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.ip.rev140616.interfaces._interface.ipv6.Address;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.ip.rev140616.interfaces._interface.ipv6.AddressKey;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class Ipv6AddressCustomizer extends FutureJVppCustomizer
implements ListWriterCustomizer<Address, AddressKey>, IpWriter {
private static final Logger LOG = LoggerFactory.getLogger(Ipv6AddressCustomizer.class);
private static final String LINK_LOCAL_START_MASK = "fe08";
private final NamingContext interfaceContext;
public Ipv6AddressCustomizer(@Nonnull final FutureJVppCore futureJVppCore,
@Nonnull final NamingContext interfaceContext) {
super(futureJVppCore);
this.interfaceContext = interfaceContext;
}
@Override
public void writeCurrentAttributes(@Nonnull final InstanceIdentifier<Address> id, @Nonnull final Address dataAfter,
@Nonnull final WriteContext writeContext) throws WriteFailedException {
final String interfaceName = id.firstKeyOf(Interface.class).getName();
final int interfaceIndex = interfaceContext.getIndex(interfaceName, writeContext.getMappingContext());
// prevents scenario
// - vpp has been restarted == cleaned state
// - hc tries to restore data, which has link-local address in it
// link layer address is created by vpp(generated) after adding first address, so its present just
// after adding first address, and attempt to override it during init would cause error -1
if (dataAfter.getIp().getValue().startsWith(LINK_LOCAL_START_MASK)) {
LOG.info("An attempt to rewrite link-local address with {} has been detected,ignoring request",
dataAfter.getIp());
return;
}
addDelAddress(getFutureJVpp(), true, id, interfaceIndex, dataAfter.getIp(),
dataAfter.getPrefixLength().byteValue());
}
@Override
public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<Address> id,
@Nonnull final Address dataBefore,
@Nonnull final WriteContext writeContext) throws WriteFailedException {
final String interfaceName = id.firstKeyOf(Interface.class).getName();
final int interfaceIndex = interfaceContext.getIndex(interfaceName, writeContext.getMappingContext());
addDelAddress(getFutureJVpp(), false, id, interfaceIndex, dataBefore.getIp(),
dataBefore.getPrefixLength().byteValue());
}
}
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