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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.routing.write;
import static com.google.common.base.Preconditions.checkArgument;
import com.google.common.base.Preconditions;
import io.fd.hc2vpp.common.translate.util.ByteDataTranslator;
import io.fd.hc2vpp.common.translate.util.FutureJVppCustomizer;
import io.fd.hc2vpp.common.translate.util.Ipv6Translator;
import io.fd.hc2vpp.common.translate.util.JvppReplyConsumer;
import io.fd.hc2vpp.common.translate.util.NamingContext;
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.vpp.jvpp.core.dto.SwInterfaceIp6NdRaPrefix;
import io.fd.vpp.jvpp.core.future.FutureJVppCore;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.routing.ra.rev180319.ControlAdvPrefixesVppAugmentation;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.ipv6.unicast.routing.rev180313.interfaces._interface.ipv6.ipv6.router.advertisements.prefix.list.Prefix;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.ipv6.unicast.routing.rev180313.interfaces._interface.ipv6.ipv6.router.advertisements.prefix.list.PrefixKey;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.ipv6.unicast.routing.rev180313.interfaces._interface.ipv6.ipv6.router.advertisements.prefix.list.prefix.ControlAdvPrefixes;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.ipv6.unicast.routing.rev180313.interfaces._interface.ipv6.ipv6.router.advertisements.prefix.list.prefix.control.adv.prefixes.Advertise;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.ipv6.unicast.routing.rev180313.interfaces._interface.ipv6.ipv6.router.advertisements.prefix.list.prefix.control.adv.prefixes.NoAdvertise;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
final class PrefixCustomizer extends FutureJVppCustomizer
implements ListWriterCustomizer<Prefix, PrefixKey>, JvppReplyConsumer, ByteDataTranslator, Ipv6Translator {
private static final Logger LOG = LoggerFactory.getLogger(PrefixCustomizer.class);
private final NamingContext interfaceContext;
PrefixCustomizer(@Nonnull final FutureJVppCore jvpp, @Nonnull final NamingContext interfaceContext) {
super(jvpp);
this.interfaceContext = Preconditions.checkNotNull(interfaceContext, "interfaceContext should not be null");
}
@Override
public void writeCurrentAttributes(@Nonnull final InstanceIdentifier<Prefix> id,
@Nonnull final Prefix dataAfter, @Nonnull final WriteContext writeContext)
throws WriteFailedException {
LOG.debug("Writing Prefix {} dataAfter={}", id, dataAfter);
setPrefix(id, dataAfter, writeContext, false);
}
@Override
public void updateCurrentAttributes(@Nonnull final InstanceIdentifier<Prefix> id,
@Nonnull final Prefix dataBefore, @Nonnull final Prefix dataAfter,
@Nonnull final WriteContext writeContext) throws WriteFailedException {
LOG.debug("Updating Prefix {} before={} after={}", id, dataBefore, dataAfter);
setPrefix(id, dataAfter, writeContext, false);
}
@Override
public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<Prefix> id,
@Nonnull final Prefix dataBefore, @Nonnull final WriteContext writeContext)
throws WriteFailedException {
LOG.debug("Removing Prefix {} dataBefore={}", id, dataBefore);
setPrefix(id, dataBefore, writeContext, true);
}
private void setPrefix(final InstanceIdentifier<Prefix> id, final Prefix prefix, final WriteContext writeContext,
final boolean isDelete) throws WriteFailedException {
final String ifcName = id.firstKeyOf(Interface.class).getName();
final int ifcIndex = interfaceContext.getIndex(ifcName, writeContext.getMappingContext());
final SwInterfaceIp6NdRaPrefix request = new SwInterfaceIp6NdRaPrefix();
request.swIfIndex = ifcIndex;
request.address = ipv6AddressPrefixToArray(prefix.getPrefixSpec());
request.addressLength = extractPrefix(prefix.getPrefixSpec()); // prefix length (vpp api naming bug)
if (isDelete) {
request.isNo = 1;
} else {
parseControlAdvPrefixes(request, prefix.getControlAdvPrefixes(), prefix.augmentation(
ControlAdvPrefixesVppAugmentation.class));
}
LOG.debug("Setting Prefix for interface {}(id={}): {}", ifcName, ifcIndex, request);
getReplyForWrite(getFutureJVpp().swInterfaceIp6NdRaPrefix(request).toCompletableFuture(), id);
LOG.debug("Prefix: {} updated successfully", id);
}
private void parseControlAdvPrefixes(final SwInterfaceIp6NdRaPrefix request,
final ControlAdvPrefixes controlAdvPrefixes,
final ControlAdvPrefixesVppAugmentation vppAugmentation) {
if (controlAdvPrefixes instanceof Advertise) {
final Advertise advertise = (Advertise) controlAdvPrefixes;
request.noAutoconfig = booleanToByte(!advertise.isAutonomousFlag());
request.noOnlink = booleanToByte(!advertise.isOnLinkFlag());
// request.offLink controls L bit in the same way as noOnlink, but also controls if it is installed in FIB
if (advertise.getValidLifetime() != null) {
request.valLifetime = advertise.getValidLifetime().intValue();
}
if (advertise.getPreferredLifetime() != null) {
checkArgument(advertise.getValidLifetime() != null,
"valid-lifetime needs to be configured if preferred-lifetime is given");
checkArgument(advertise.getPreferredLifetime() <= advertise.getValidLifetime(),
"preferred-lifetime MUST NOT be greater than valid-lifetime.");
request.prefLifetime = advertise.getPreferredLifetime().intValue();
}
if (vppAugmentation != null) {
request.useDefault = booleanToByte(vppAugmentation.isVppDefault());
request.noAdvertise = booleanToByte(!vppAugmentation.isAdvertiseRouterAddress());
}
} else if (controlAdvPrefixes instanceof NoAdvertise) {
throw new IllegalArgumentException(
"NoAdvertise control-adv-prefix is not supported." +
"To remove prefix from set of advertised prefixes, use DELETE request.");
} else {
throw new IllegalArgumentException("Unsupported control-adv-prefix: " + controlAdvPrefixes);
}
}
}
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