1 files changed, 92 insertions, 0 deletions
diff --git a/nat/nat2vpp/src/main/java/io/fd/honeycomb/nat/write/ExternalIpPoolCustomizer.java b/nat/nat2vpp/src/main/java/io/fd/honeycomb/nat/write/ExternalIpPoolCustomizer.java
new file mode 100644
index 000000000..856bc1355
--- /dev/null
+++ b/nat/nat2vpp/src/main/java/io/fd/honeycomb/nat/write/ExternalIpPoolCustomizer.java
@@ -0,0 +1,92 @@
+/*
+ * 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;
+    }
+}