1 files changed, 122 insertions, 0 deletions
diff --git a/routing/routing-impl/src/main/java/io/fd/hc2vpp/routing/naming/Ipv6RouteNamesFactory.java b/routing/routing-impl/src/main/java/io/fd/hc2vpp/routing/naming/Ipv6RouteNamesFactory.java
new file mode 100644
index 000000000..8408c82b6
--- /dev/null
+++ b/routing/routing-impl/src/main/java/io/fd/hc2vpp/routing/naming/Ipv6RouteNamesFactory.java
@@ -0,0 +1,122 @@
+/*
+ * 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.hc2vpp.routing.naming;
+
+import com.google.common.net.InetAddresses;
+import io.fd.hc2vpp.common.translate.util.NamingContext;
+import io.fd.hc2vpp.routing.trait.RouteMapper;
+import io.fd.honeycomb.translate.MappingContext;
+import io.fd.vpp.jvpp.core.dto.Ip6FibDetails;
+import io.fd.vpp.jvpp.core.types.FibPath;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import javax.annotation.Nonnull;
+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.inet.types.rev130715.Ipv6Prefix;
+
+
+public final class Ipv6RouteNamesFactory implements RouteMapper {
+
+    private static final String DOUBLE_DOT = ":";
+    private static final String EMPTY = "";
+
+    private final NamingContext interfaceContext;
+    private final NamingContext routingProtocolContext;
+
+    public Ipv6RouteNamesFactory(@Nonnull final NamingContext interfaceContext,
+                                 @Nonnull final NamingContext routingProtocolContext) {
+        this.interfaceContext = interfaceContext;
+        this.routingProtocolContext = routingProtocolContext;
+    }
+
+    /**
+     * Construct unique name from provided {@code Route}
+     */
+    public String uniqueRouteName(@Nonnull final String parentProtocolName,
+                                  @Nonnull final org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.ipv6.unicast.routing.rev140525.routing.routing.instance.routing.protocols.routing.protocol._static.routes.ipv6.Route route) {
+        return bindName(parentProtocolName,
+                // to have address in compressed form
+                doubleDotlessAddress(route.getDestinationPrefix()),
+                String.valueOf(extractPrefix(route.getDestinationPrefix())));
+    }
+
+    /**
+     * Construct unique name from provided {@code IpFibDetails}
+     */
+    public String uniqueRouteName(@Nonnull final Ip6FibDetails details, @Nonnull final MappingContext mappingContext) {
+        return bindName(routingProtocolContext.getName(details.tableId, mappingContext),
+                doubleDotlessAddress(details.address),
+                String.valueOf(details.addressLength));
+    }
+
+    public String uniqueRouteHopName(
+            @Nonnull final org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.ipv6.unicast.routing.rev140525.routing.routing.instance.routing.protocols.routing.protocol._static.routes.ipv6.route.next.hop.options.next.hop.list.next.hop.list.NextHop hop) {
+        return bindName(hop.getOutgoingInterface(),
+                doubleDotlessAddress(hop.getAddress()),
+                String.valueOf(hop.getWeight()));
+    }
+
+    public String uniqueRouteHopName(@Nonnull final FibPath path, @Nonnull final MappingContext mappingContext) {
+        return bindName(interfaceContext.getName(path.swIfIndex, mappingContext),
+                doubleDotlessAddress(path.nextHop),
+                String.valueOf(path.weight));
+    }
+
+    /**
+     * Uses combination of standard java.net.InetAddress and com.google.common.net.InetAddresses for following reasons
+     * <ul>
+     * <li>
+     * InetAddresses.toAddrString uses maximal ipv6 compression - eliminate possibility of mismatch between same
+     * addresses with different compression
+     * </li>
+     * <li>
+     * InetAddress.getByAddress just converts byte array to address, that's
+     * why InetAddresses.fromLittleEndianByteArray is not used, because it internaly reverts order of address
+     * bytes,which is something that is not needed here
+     * </li>
+     * </ul>
+     */
+    private String doubleDotlessAddress(final byte[] address) {
+        try {
+            return doubleDotless(InetAddresses.toAddrString(InetAddress.getByAddress(address)));
+        } catch (UnknownHostException e) {
+            throw new IllegalArgumentException(e);
+        }
+    }
+
+    private String doubleDotlessAddress(@Nonnull final Ipv6Prefix address) {
+        final String addressValue = address.getValue();
+        return doubleDotless(compressedIpv6(addressValue.substring(0, addressValue.indexOf("/"))));
+    }
+
+    private String doubleDotlessAddress(@Nonnull final Ipv6Address address) {
+        // converted to use maximal compression
+        // for details - https://google.github.io/guava/releases/snapshot/api/docs/com/google/common/net/InetAddresses.html#toAddrString-java.net.InetAddress
+        return doubleDotless(compressedIpv6(address.getValue()));
+    }
+
+    /**
+     * Use maximal compresion of ipv6 address string
+     */
+    private String compressedIpv6(@Nonnull final String input) {
+        return InetAddresses.toAddrString(InetAddresses.forString(input));
+    }
+
+    private String doubleDotless(@Nonnull final String input) {
+        return input.replace(DOUBLE_DOT, EMPTY);
+    }
+}