diff options
Diffstat (limited to 'srv6/srv6-impl/src/main/java/io/fd/hc2vpp/srv6/write/sid/SidCustomizer.java')
-rw-r--r-- | srv6/srv6-impl/src/main/java/io/fd/hc2vpp/srv6/write/sid/SidCustomizer.java | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/srv6/srv6-impl/src/main/java/io/fd/hc2vpp/srv6/write/sid/SidCustomizer.java b/srv6/srv6-impl/src/main/java/io/fd/hc2vpp/srv6/write/sid/SidCustomizer.java new file mode 100644 index 000000000..c63205699 --- /dev/null +++ b/srv6/srv6-impl/src/main/java/io/fd/hc2vpp/srv6/write/sid/SidCustomizer.java @@ -0,0 +1,136 @@ +/* + * 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.sid; + +import com.google.common.base.Optional; +import com.google.common.base.Preconditions; +import com.googlecode.ipv6.IPv6NetworkMask; +import io.fd.hc2vpp.common.translate.util.FutureJVppCustomizer; +import io.fd.hc2vpp.fib.management.FibManagementIIds; +import io.fd.hc2vpp.srv6.util.function.LocalSidFunctionWriteBindingRegistry; +import io.fd.hc2vpp.srv6.write.sid.request.LocalSidFunctionRequest; +import io.fd.honeycomb.translate.spi.write.ListWriterCustomizer; +import io.fd.honeycomb.translate.util.RWUtils; +import io.fd.honeycomb.translate.write.WriteContext; +import io.fd.honeycomb.translate.write.WriteFailedException; +import io.fd.vpp.jvpp.core.future.FutureJVppCore; +import javax.annotation.Nonnull; +import org.opendaylight.yang.gen.v1.urn.hc2vpp.params.xml.ns.yang.vpp.ietf.srv6.base.rev180613.VppSrv6FibLocatorAugment; +import org.opendaylight.yang.gen.v1.urn.hc2vpp.params.xml.ns.yang.vpp.ietf.srv6.base.rev180613.vpp.srv6.fib.FibTable; +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.srv6._static.rev180301.srv6._static.cfg.Sid; +import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.srv6._static.rev180301.srv6._static.cfg.SidKey; +import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.srv6.base.rev180301.srv6.locators.locators.Locator; +import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.srv6.base.rev180301.srv6.locators.locators.locator.Prefix; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.fib.table.management.rev180521.vpp.fib.table.management.fib.tables.Table; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.fib.table.management.rev180521.vpp.fib.table.management.fib.tables.TableKey; +import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; +import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier; + +public class SidCustomizer extends FutureJVppCustomizer implements ListWriterCustomizer<Sid, SidKey> { + + private final LocalSidFunctionWriteBindingRegistry bindingRegistry; + + public SidCustomizer(@Nonnull final FutureJVppCore futureJVppCore, + @Nonnull final LocalSidFunctionWriteBindingRegistry bindingRegistry) { + super(futureJVppCore); + this.bindingRegistry = bindingRegistry; + } + + Ipv6Address resolveSidAddress(@Nonnull final Prefix locPrefix, @Nonnull Sid localSid) { + com.googlecode.ipv6.IPv6Address ip = + com.googlecode.ipv6.IPv6Address.fromString(locPrefix.getAddress().getValue()); + IPv6NetworkMask mask = IPv6NetworkMask.fromPrefixLength(locPrefix.getLength().getValue()); + // strip function part if present + ip = ip.maskWithNetworkMask(mask); + //add new function part based on opcode + String locIp = ip.add(localSid.getOpcode().getValue().intValue()).toString(); + return new Ipv6Address(locIp); + } + + @Override + public void writeCurrentAttributes(@Nonnull final InstanceIdentifier<Sid> instanceIdentifier, + @Nonnull final Sid localSid, @Nonnull final WriteContext writeContext) + throws WriteFailedException { + InstanceIdentifier<Locator> locatorIid = RWUtils.cutId(instanceIdentifier, Locator.class); + Optional<Locator> locatorOpt = writeContext.readAfter(locatorIid); + Table vrfTable = getVrfTable(instanceIdentifier, writeContext, locatorIid, locatorOpt); + LocalSidFunctionRequest request = bindRequest(extractLocPrefix(instanceIdentifier, locatorOpt, localSid), + localSid, vrfTable.getTableId().getValue().intValue(), writeContext); + if (request == null) { + throw new WriteFailedException(instanceIdentifier, + String.format("Cannot create write request for %s", localSid)); + } + request.write(instanceIdentifier); + } + + private Table getVrfTable(final @Nonnull InstanceIdentifier<Sid> iid, final @Nonnull WriteContext writeContext, + final InstanceIdentifier<Locator> locatorIid, final Optional<Locator> locatorOpt) { + Preconditions.checkArgument(locatorOpt.isPresent(), "Locator: {} for SID: {} was not found.", locatorIid, iid); + Preconditions.checkNotNull(locatorOpt.get().getAugmentation(VppSrv6FibLocatorAugment.class), + "Vpp FIB table augmentation was not found for SID: {}.", iid); + FibTable fibTable = locatorOpt.get().getAugmentation(VppSrv6FibLocatorAugment.class).getFibTable(); + Preconditions.checkNotNull(fibTable, "Vpp FIB table configuration was not found for SID: {}.", iid); + TableKey tableKey = new TableKey(fibTable.getAddressFamily(), fibTable.getTableId()); + KeyedInstanceIdentifier<Table, TableKey> vrfIid = FibManagementIIds.FM_FIB_TABLES.child(Table.class, tableKey); + if (!writeContext.readAfter(vrfIid).isPresent()) { + throw new IllegalArgumentException( + String.format("VRF table: %s not found. Create table before writing SID : %s.", tableKey, iid)); + } + return writeContext.readAfter(vrfIid).get(); + } + + private Prefix extractLocPrefix(final @Nonnull InstanceIdentifier<Sid> instanceIdentifier, + Optional<Locator> locatorOpt, final @Nonnull Sid localSid) + throws WriteFailedException { + Preconditions.checkArgument(locatorOpt.isPresent(), "Cannot read locator for sid: {}, with IId: ", localSid, + instanceIdentifier); + Locator loc = locatorOpt.get(); + if (loc.getPrefix() == null || loc.getPrefix() == null || loc.getPrefix().getAddress() == null || + loc.getPrefix().getLength() == null) { + throw new WriteFailedException(instanceIdentifier, + String.format("Cannot parse locator prefix for local sid %s", localSid)); + } + return loc.getPrefix(); + } + + @Override + public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<Sid> instanceIdentifier, + @Nonnull final Sid localSid, @Nonnull final WriteContext writeContext) + throws WriteFailedException { + InstanceIdentifier<Locator> locatorIid = RWUtils.cutId(instanceIdentifier, Locator.class); + Optional<Locator> locatorOpt = writeContext.readBefore(locatorIid); + Table vrfTable = getVrfTable(instanceIdentifier, writeContext, locatorIid, locatorOpt); + LocalSidFunctionRequest request = bindRequest(extractLocPrefix(instanceIdentifier, locatorOpt, localSid), + localSid, vrfTable.getTableId().getValue().intValue(), writeContext); + + if (request == null) { + throw new WriteFailedException(instanceIdentifier, + String.format("Cannot create delete request for %s", localSid)); + } + request.delete(instanceIdentifier); + } + + private LocalSidFunctionRequest bindRequest(final @Nonnull Prefix locPrefix, final @Nonnull Sid localSid, + final int installFibId, final @Nonnull WriteContext writeContext) { + LocalSidFunctionRequest request = bindingRegistry.bind(localSid, writeContext); + Ipv6Address sidAddress = resolveSidAddress(locPrefix, localSid); + request.setLocalSidAddress(sidAddress); + request.setInstallFibTable(installFibId); + return request; + } +} |