1 files changed, 92 insertions, 0 deletions
diff --git a/l3/impl/src/main/java/io/fd/hc2vpp/l3/write/ipv6/Ipv6AddressCustomizer.java b/l3/impl/src/main/java/io/fd/hc2vpp/l3/write/ipv6/Ipv6AddressCustomizer.java
new file mode 100644
index 000000000..d6b357c90
--- /dev/null
+++ b/l3/impl/src/main/java/io/fd/hc2vpp/l3/write/ipv6/Ipv6AddressCustomizer.java
@@ -0,0 +1,92 @@
+/*
+ * 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.l3.write.ipv6;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import io.fd.hc2vpp.common.translate.util.FutureJVppCustomizer;
+import io.fd.hc2vpp.common.translate.util.NamingContext;
+import io.fd.hc2vpp.l3.utils.ip.write.IpWriter;
+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.core.future.FutureJVppCore;
+import javax.annotation.Nonnull;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.ip.rev140616.interfaces._interface.ipv6.Address;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.ip.rev140616.interfaces._interface.ipv6.AddressKey;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+public class Ipv6AddressCustomizer extends FutureJVppCustomizer
+        implements ListWriterCustomizer<Address, AddressKey>, IpWriter {
+
+    private static final Logger LOG = LoggerFactory.getLogger(Ipv6AddressCustomizer.class);
+
+    private static final String LINK_LOCAL_START_MASK = "fe08";
+    private final NamingContext interfaceContext;
+
+    public Ipv6AddressCustomizer(@Nonnull final FutureJVppCore futureJVppCore,
+                                 @Nonnull final NamingContext interfaceContext) {
+        super(futureJVppCore);
+        this.interfaceContext = checkNotNull(interfaceContext, "Interface context cannot be null");
+    }
+
+    @Override
+    public void writeCurrentAttributes(@Nonnull final InstanceIdentifier<Address> id, @Nonnull final Address dataAfter,
+                                       @Nonnull final WriteContext writeContext) throws WriteFailedException {
+        final String interfaceName = id.firstKeyOf(Interface.class).getName();
+        final int interfaceIndex = interfaceContext.getIndex(interfaceName, writeContext.getMappingContext());
+
+        // prevents scenario
+        // - vpp has been restarted == cleaned state
+        // - hc tries to restore data, which has link-local address in it
+        // link layer address is created by vpp(generated) after adding first address, so its present just
+        // after adding first address, and attempt to override it during init would cause error -1
+        if (dataAfter.getIp().getValue().startsWith(LINK_LOCAL_START_MASK)) {
+            LOG.info("An attempt to rewrite link-local address with {} has been detected,ignoring request",
+                    dataAfter.getIp());
+            return;
+        }
+
+        addDelAddress(getFutureJVpp(), true, id, interfaceIndex, dataAfter.getIp(),
+                dataAfter.getPrefixLength().byteValue());
+    }
+
+    @Override
+    public void updateCurrentAttributes(@Nonnull final InstanceIdentifier<Address> id,
+                                        @Nonnull final Address dataBefore,
+                                        @Nonnull final Address dataAfter, @Nonnull final WriteContext writeContext)
+            throws WriteFailedException {
+        throw new WriteFailedException.UpdateFailedException(id, dataBefore, dataAfter,
+                new UnsupportedOperationException("Operation not supported"));
+    }
+
+    @Override
+    public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<Address> id,
+                                        @Nonnull final Address dataBefore,
+                                        @Nonnull final WriteContext writeContext) throws WriteFailedException {
+        final String interfaceName = id.firstKeyOf(Interface.class).getName();
+        final int interfaceIndex = interfaceContext.getIndex(interfaceName, writeContext.getMappingContext());
+
+        addDelAddress(getFutureJVpp(), false, id, interfaceIndex, dataBefore.getIp(),
+                dataBefore.getPrefixLength().byteValue());
+    }
+
+}