HC2VPP-105: add support for nat64 pool configuration

Change-Id: I5e57b7855e081056ad0d675084209fc9cd4add23
Signed-off-by: Marek Gradzki <mgradzki@cisco.com>

2 files changed, 45 insertions, 12 deletions

diff --git a/nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/write/ExternalIpPoolCustomizer.java b/nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/write/ExternalIpPoolCustomizer.java
index 61fedbd48..62331620d 100644
--- a/nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/write/ExternalIpPoolCustomizer.java
+++ b/nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/write/ExternalIpPoolCustomizer.java
@@ -17,13 +17,16 @@
 package io.fd.hc2vpp.nat.write;
 
 import static com.google.common.base.Preconditions.checkArgument;
+import static org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.nat.rev170804.NatPoolType.Nat64;
 
-import io.fd.honeycomb.translate.spi.write.ListWriterCustomizer;
+import io.fd.hc2vpp.common.translate.util.ByteDataTranslator;
 import io.fd.hc2vpp.common.translate.util.Ipv4AddressRange;
 import io.fd.hc2vpp.common.translate.util.Ipv4Translator;
 import io.fd.hc2vpp.common.translate.util.JvppReplyConsumer;
+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.snat.dto.Nat64AddDelPoolAddrRange;
 import io.fd.vpp.jvpp.snat.dto.SnatAddAddressRange;
 import io.fd.vpp.jvpp.snat.future.FutureJVppSnatFacade;
 import javax.annotation.Nonnull;
@@ -31,12 +34,13 @@ import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.
 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.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.nat.rev170804.ExternalIpAddressPoolConfigAugmentation;
 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 final class ExternalIpPoolCustomizer implements ListWriterCustomizer<ExternalIpAddressPool, ExternalIpAddressPoolKey>,
-        JvppReplyConsumer, Ipv4Translator {
+        JvppReplyConsumer, Ipv4Translator, ByteDataTranslator {
 
     private static final Logger LOG = LoggerFactory.getLogger(ExternalIpPoolCustomizer.class);
 
@@ -54,8 +58,7 @@ final class ExternalIpPoolCustomizer implements ListWriterCustomizer<ExternalIpA
                 "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);
+        configureAddressPool(id, dataAfter, true);
         LOG.debug("Address range: {} added successfully", id);
     }
 
@@ -64,20 +67,46 @@ final class ExternalIpPoolCustomizer implements ListWriterCustomizer<ExternalIpA
                                         @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);
+        configureAddressPool(id, dataBefore, false);
         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
+    private void configureAddressPool(@Nonnull final InstanceIdentifier<ExternalIpAddressPool> id,
+                                      @Nonnull final ExternalIpAddressPool addressPool,
+                                      final boolean isAdd) throws WriteFailedException {
+        boolean isNat64 = false;
+        final ExternalIpAddressPoolConfigAugmentation augmentation =
+                addressPool.getAugmentation(ExternalIpAddressPoolConfigAugmentation.class);
+        if (augmentation != null) {
+            isNat64 = Nat64.equals(augmentation.getPoolType());
+        }
+        if (isNat64) {
+            final Nat64AddDelPoolAddrRange request = getNat64Request(addressPool.getExternalIpPool(), isAdd);
+            getReplyForWrite(jvppSnat.nat64AddDelPoolAddrRange(request).toCompletableFuture(), id);
+        } else {
+            final SnatAddAddressRange request = getNat44Request(addressPool.getExternalIpPool(), isAdd);
+            getReplyForWrite(jvppSnat.snatAddAddressRange(request).toCompletableFuture(), id);
+        }
+    }
+
+    private SnatAddAddressRange getNat44Request(final Ipv4Prefix externalIpPool, boolean isAdd) {
+        final SnatAddAddressRange request = new SnatAddAddressRange();
         final Ipv4AddressRange range = Ipv4AddressRange.fromPrefix(externalIpPool);
-        LOG.trace("Handling address range: {}", range);
+        LOG.trace("Handling NAT44 address range: {}", range);
         request.isIp4 = 1;
-        request.isAdd = (byte) (isAdd ? 1 : 0);
+        request.isAdd = booleanToByte(isAdd);
         request.firstIpAddress = ipv4AddressNoZoneToArray(range.getStart());
         request.lastIpAddress = ipv4AddressNoZoneToArray(range.getEnd());
         return request;
     }
+
+    private Nat64AddDelPoolAddrRange getNat64Request(final Ipv4Prefix externalIpPool, boolean isAdd) {
+        final Nat64AddDelPoolAddrRange request = new Nat64AddDelPoolAddrRange();
+        final Ipv4AddressRange range = Ipv4AddressRange.fromPrefix(externalIpPool);
+        LOG.trace("Handling NAT64 address range: {}", range);
+        request.isAdd = booleanToByte(isAdd);
+        request.startAddr = ipv4AddressNoZoneToArray(range.getStart());
+        request.endAddr = ipv4AddressNoZoneToArray(range.getEnd());
+        return request;
+    }
 }
diff --git a/nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/write/NatWriterFactory.java b/nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/write/NatWriterFactory.java
index e239721d4..ef2a2afdd 100644
--- a/nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/write/NatWriterFactory.java
+++ b/nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/write/NatWriterFactory.java
@@ -32,6 +32,7 @@ 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.nat.config.nat.instances.nat.instance.MappingTable;
 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.config.nat.instances.nat.instance.mapping.table.MappingEntry;
 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.opendaylight.params.xml.ns.yang.vpp.nat.rev170804.ExternalIpAddressPoolConfigAugmentation;
 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
 
 /**
@@ -66,7 +67,10 @@ public final class NatWriterFactory implements WriterFactory {
 
         // External address pool has to be executed before mapping entry. Because adding mapping entries requires to
         //  already have an IP range predefined ... in some cases
-        registry.addBefore(new GenericListWriter<>(NAT_INSTANCE_ID.child(ExternalIpAddressPool.class),
+        registry.subtreeAddBefore(
+                Sets.newHashSet(InstanceIdentifier.create(ExternalIpAddressPool.class)
+                                .augmentation(ExternalIpAddressPoolConfigAugmentation.class)),
+                        new GenericListWriter<>(NAT_INSTANCE_ID.child(ExternalIpAddressPool.class),
                 new ExternalIpPoolCustomizer(jvppSnat)),
                 MAP_ENTRY_ID);
     }