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-rw-r--r--nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/read/Nat64PrefixesCustomizer.java142
-rw-r--r--nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/read/NatReaderFactory.java9
2 files changed, 151 insertions, 0 deletions
diff --git a/nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/read/Nat64PrefixesCustomizer.java b/nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/read/Nat64PrefixesCustomizer.java
new file mode 100644
index 000000000..badc6e9bd
--- /dev/null
+++ b/nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/read/Nat64PrefixesCustomizer.java
@@ -0,0 +1,142 @@
+/*
+ * 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.nat.read;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import com.google.common.collect.Maps;
+import com.google.common.primitives.UnsignedBytes;
+import com.google.common.primitives.UnsignedInts;
+import io.fd.hc2vpp.common.translate.util.Ipv6Translator;
+import io.fd.hc2vpp.common.translate.util.JvppReplyConsumer;
+import io.fd.honeycomb.translate.read.ReadContext;
+import io.fd.honeycomb.translate.read.ReadFailedException;
+import io.fd.honeycomb.translate.spi.read.ListReaderCustomizer;
+import io.fd.honeycomb.translate.util.read.cache.DumpCacheManager;
+import io.fd.honeycomb.translate.util.read.cache.EntityDumpExecutor;
+import io.fd.honeycomb.translate.util.read.cache.StaticCacheKeyFactory;
+import io.fd.vpp.jvpp.nat.dto.Nat64PrefixDetails;
+import io.fd.vpp.jvpp.nat.dto.Nat64PrefixDetailsReplyDump;
+import io.fd.vpp.jvpp.nat.dto.Nat64PrefixDump;
+import io.fd.vpp.jvpp.nat.future.FutureJVppNatFacade;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import javax.annotation.Nonnull;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.parameters.Nat64Prefixes;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.parameters.Nat64PrefixesBuilder;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.parameters.Nat64PrefixesKey;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.state.nat.instances.NatInstance;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.state.nat.instances.NatInstanceKey;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.state.nat.instances.nat.instance.NatCurrentConfigBuilder;
+import org.opendaylight.yangtools.concepts.Builder;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+final class Nat64PrefixesCustomizer
+ implements ListReaderCustomizer<Nat64Prefixes, Nat64PrefixesKey, Nat64PrefixesBuilder>,
+ JvppReplyConsumer, Ipv6Translator {
+
+ private static final Logger LOG = LoggerFactory.getLogger(Nat64PrefixesCustomizer.class);
+
+ private final DumpCacheManager<Map<Long, Nat64PrefixDetails>, Void> dumpManager;
+
+ Nat64PrefixesCustomizer(@Nonnull final FutureJVppNatFacade jvppNat) {
+ this.dumpManager = new DumpCacheManager.DumpCacheManagerBuilder<Map<Long, Nat64PrefixDetails>, Void>()
+ .withExecutor(new Nat64PrefixesExecutor(jvppNat))
+ .withCacheKeyFactory(
+ new StaticCacheKeyFactory(Nat64PrefixesCustomizer.class.getName() + "_dump", Map.class))
+ .build();
+ }
+
+ @Nonnull
+ @Override
+ public List<Nat64PrefixesKey> getAllIds(@Nonnull final InstanceIdentifier<Nat64Prefixes> id,
+ @Nonnull final ReadContext context)
+ throws ReadFailedException {
+ final NatInstanceKey natKey = id.firstKeyOf(NatInstance.class);
+ LOG.trace("Listing IDs for all nat64 prefixes within nat-instance(vrf): {}", natKey);
+
+ final Map<Long, Nat64PrefixDetails> prefixesByVrfId =
+ dumpManager.getDump(id, context.getModificationCache(), null).get();
+ final Nat64PrefixDetails nat64PrefixDetails = prefixesByVrfId.get(natKey.getId());
+ if (nat64PrefixDetails != null) {
+ // VPP supports only single nat64-prefix per VRF/nat-instance (we map nat-instances to VRFs)
+ // To ensure that (and for simplicity), we set nat64-prefix-id to 0.
+ return Collections.singletonList(new Nat64PrefixesKey(0L));
+ } else {
+ return Collections.emptyList();
+ }
+ }
+
+ @Override
+ public void merge(@Nonnull final Builder<? extends DataObject> builder,
+ @Nonnull final List<Nat64Prefixes> readData) {
+ ((NatCurrentConfigBuilder) builder).setNat64Prefixes(readData);
+ }
+
+ @Nonnull
+ @Override
+ public Nat64PrefixesBuilder getBuilder(@Nonnull final InstanceIdentifier<Nat64Prefixes> id) {
+ return new Nat64PrefixesBuilder();
+ }
+
+ @Override
+ public void readCurrentAttributes(@Nonnull final InstanceIdentifier<Nat64Prefixes> id,
+ @Nonnull final Nat64PrefixesBuilder builder, @Nonnull final ReadContext context)
+ throws ReadFailedException {
+ LOG.trace("Reading nat64-prefixes: {}", id);
+ final long prefixId = id.firstKeyOf(Nat64Prefixes.class).getNat64PrefixId().longValue();
+ if (prefixId != 0L) {
+ // Ignore non zero IDs (VPP supports single nat64 prefix per VRF)
+ return;
+ }
+ final Map<Long, Nat64PrefixDetails> prefixesByVrfId =
+ dumpManager.getDump(id, context.getModificationCache(), null).get();
+ final Nat64PrefixDetails prefixDetails = prefixesByVrfId.get(id.firstKeyOf(NatInstance.class).getId());
+ if (prefixDetails != null) {
+ builder.setNat64PrefixId(prefixId);
+ builder.setNat64Prefix(
+ arrayToIpv6Prefix(prefixDetails.prefix, UnsignedBytes.toInt(prefixDetails.prefixLen)));
+ }
+ }
+
+ private final class Nat64PrefixesExecutor implements EntityDumpExecutor<Map<Long, Nat64PrefixDetails>, Void> {
+ private final FutureJVppNatFacade jvppNat;
+
+ private Nat64PrefixesExecutor(@Nonnull final FutureJVppNatFacade jvppNat) {
+ this.jvppNat = checkNotNull(jvppNat, "jvppNat should not be null");
+ }
+
+ @Nonnull
+ @Override
+ public Map<Long, Nat64PrefixDetails> executeDump(final InstanceIdentifier<?> id, final Void params)
+ throws ReadFailedException {
+ final Nat64PrefixDetailsReplyDump dump =
+ getReplyForRead(jvppNat.nat64PrefixDump(new Nat64PrefixDump()).toCompletableFuture(), id);
+ // To improve read performance (if multiple nat instances are defined),
+ // we store map instead of list of prefixes.
+
+ // Current nat64-prefixes mapping relies on the fact, that VPP supports single prefix for VRF.
+ // To validate that we rely on Guava's Maps.uniqueIndex which trows IllegalStateException
+ // if duplicate key is found.
+ return Maps.uniqueIndex(dump.nat64PrefixDetails, prefixDetails -> UnsignedInts.toLong(prefixDetails.vrfId));
+ }
+ }
+}
diff --git a/nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/read/NatReaderFactory.java b/nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/read/NatReaderFactory.java
index 754f19337..a97d47a1a 100644
--- a/nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/read/NatReaderFactory.java
+++ b/nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/read/NatReaderFactory.java
@@ -20,6 +20,7 @@ import com.google.common.collect.Sets;
import com.google.inject.Inject;
import io.fd.hc2vpp.nat.util.MappingEntryContext;
import io.fd.honeycomb.translate.impl.read.GenericInitListReader;
+import io.fd.honeycomb.translate.impl.read.GenericListReader;
import io.fd.honeycomb.translate.read.ReaderFactory;
import io.fd.honeycomb.translate.read.registry.ModifiableReaderRegistryBuilder;
import io.fd.honeycomb.translate.util.read.cache.DumpCacheManager;
@@ -32,6 +33,8 @@ import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev1509
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.mapping.entry.ExternalSrcPort;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.mapping.entry.InternalSrcPort;
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.Nat64Prefixes;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.parameters.nat64.prefixes.DestinationIpv4Prefix;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.state.NatInstances;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.state.NatInstancesBuilder;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.state.nat.instances.NatInstance;
@@ -90,5 +93,11 @@ public class NatReaderFactory implements ReaderFactory {
registry.addStructuralReader(CURRENT_CONFIG, NatCurrentConfigBuilder.class);
registry.add(new GenericInitListReader<>(CURRENT_CONFIG.child(ExternalIpAddressPool.class),
new ExternalIpPoolCustomizer(jvppNat)));
+
+ // nat64-prefixes
+ registry.subtreeAdd(
+ Sets.newHashSet(InstanceIdentifier.create(Nat64Prefixes.class).child(DestinationIpv4Prefix.class)),
+ new GenericListReader<>(CURRENT_CONFIG.child(Nat64Prefixes.class),
+ new Nat64PrefixesCustomizer(jvppNat)));
}
}