/* * 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, 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 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 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 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; } }