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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.honeycomb.nat.write;
import static com.google.common.base.Preconditions.checkArgument;
import io.fd.honeycomb.translate.spi.write.ListWriterCustomizer;
import io.fd.honeycomb.translate.vpp.util.Ipv4AddressRange;
import io.fd.honeycomb.translate.vpp.util.Ipv4Translator;
import io.fd.honeycomb.translate.vpp.util.JvppReplyConsumer;
import io.fd.honeycomb.translate.write.WriteContext;
import io.fd.honeycomb.translate.write.WriteFailedException;
import io.fd.vpp.jvpp.snat.dto.SnatAddAddressRange;
import io.fd.vpp.jvpp.snat.future.FutureJVppSnatFacade;
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.nat.rev150908.nat.config.nat.instances.NatInstance;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.parameters.ExternalIpAddressPool;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.parameters.ExternalIpAddressPoolKey;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
final class ExternalIpPoolCustomizer implements ListWriterCustomizer<ExternalIpAddressPool, ExternalIpAddressPoolKey>,
JvppReplyConsumer, Ipv4Translator {
private static final Logger LOG = LoggerFactory.getLogger(ExternalIpPoolCustomizer.class);
private final FutureJVppSnatFacade jvppSnat;
ExternalIpPoolCustomizer(@Nonnull final FutureJVppSnatFacade jvppSnat) {
this.jvppSnat = jvppSnat;
}
@Override
public void writeCurrentAttributes(@Nonnull final InstanceIdentifier<ExternalIpAddressPool> id,
@Nonnull final ExternalIpAddressPool dataAfter,
@Nonnull final WriteContext writeContext) throws WriteFailedException {
checkArgument(id.firstKeyOf(NatInstance.class).getId() == 0,
"External IP pools are only assignable for nat instance(vrf-id) with ID 0");
LOG.trace("Adding address range:{}, as: {}", id, dataAfter);
// TODO check overlaps ? VPP-478 maybe no necessary, depending on how VPP handles them
getReplyForCreate(jvppSnat.snatAddAddressRange(
getRequest(dataAfter.getExternalIpPool(), true)).toCompletableFuture(), id, dataAfter);
LOG.debug("Address range: {} added successfully", id);
}
@Override
public void updateCurrentAttributes(@Nonnull final InstanceIdentifier<ExternalIpAddressPool> id,
@Nonnull final ExternalIpAddressPool dataBefore,
@Nonnull final ExternalIpAddressPool dataAfter,
@Nonnull final WriteContext writeContext) throws WriteFailedException {
throw new WriteFailedException.UpdateFailedException(id, dataBefore, dataAfter,
new UnsupportedOperationException("Address range update is not supported"));
}
@Override
public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<ExternalIpAddressPool> id,
@Nonnull final ExternalIpAddressPool dataBefore,
@Nonnull final WriteContext writeContext) throws WriteFailedException {
LOG.trace("Deleting address range:{}, as: {}", id, dataBefore);
getReplyForDelete(jvppSnat.snatAddAddressRange(
getRequest(dataBefore.getExternalIpPool(), false)).toCompletableFuture(), id);
LOG.debug("Deleting range: {} added successfully", id);
}
private SnatAddAddressRange getRequest(final Ipv4Prefix externalIpPool, boolean isAdd) {
SnatAddAddressRange request = new SnatAddAddressRange();
// SNAT supports only IPv4 now, so does the model
final Ipv4AddressRange range = Ipv4AddressRange.fromPrefix(externalIpPool);
LOG.trace("Handling address range: {}", range);
request.isIp4 = 1;
request.isAdd = (byte) (isAdd ? 1 : 0);
request.firstIpAddress = ipv4AddressNoZoneToArray(range.getStart());
request.lastIpAddress = ipv4AddressNoZoneToArray(range.getEnd());
return request;
}
}
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