1 files changed, 108 insertions, 0 deletions
diff --git a/routing/routing-impl/src/main/java/io/fd/hc2vpp/routing/naming/Ipv4RouteNamesFactory.java b/routing/routing-impl/src/main/java/io/fd/hc2vpp/routing/naming/Ipv4RouteNamesFactory.java
new file mode 100644
index 000000000..5d3d76ff6
--- /dev/null
+++ b/routing/routing-impl/src/main/java/io/fd/hc2vpp/routing/naming/Ipv4RouteNamesFactory.java
@@ -0,0 +1,108 @@
+/*
+ * 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 io.fd.hc2vpp.common.translate.util.NamingContext;
+import io.fd.hc2vpp.routing.trait.RouteMapper;
+import io.fd.hc2vpp.routing.write.trait.RouteRequestProducer;
+import io.fd.honeycomb.translate.MappingContext;
+import io.fd.vpp.jvpp.core.dto.IpFibDetails;
+import io.fd.vpp.jvpp.core.types.FibPath;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.util.Arrays;
+import javax.annotation.Nonnull;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Address;
+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.ipv4.unicast.routing.rev140524.routing.routing.instance.routing.protocols.routing.protocol._static.routes.ipv4.Route;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.ipv4.unicast.routing.rev140524.routing.routing.instance.routing.protocols.routing.protocol._static.routes.ipv4.route.next.hop.options.next.hop.list.next.hop.list.NextHop;
+
+
+public final class Ipv4RouteNamesFactory implements RouteMapper, RouteRequestProducer {
+
+    private static final String DOT = ".";
+    private static final String EMPTY = "";
+
+    private final NamingContext interfaceContext;
+    private final NamingContext routingProtocolContext;
+
+    public Ipv4RouteNamesFactory(@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 Route route) {
+        return bindName(parentProtocolName, dotlessAddress(route.getDestinationPrefix()),
+                String.valueOf(extractPrefix(route.getDestinationPrefix())));
+    }
+
+    /**
+     * Construct unique name from provided {@code IpFibDetails}
+     */
+    public String uniqueRouteName(@Nonnull final IpFibDetails details, @Nonnull final MappingContext mappingContext) {
+        return bindName(routingProtocolContext.getName(details.tableId, mappingContext),
+                dotlessAddress(details.address),
+                String.valueOf(details.addressLength));
+    }
+
+
+    public String uniqueRouteHopName(@Nonnull final NextHop hop) {
+        return bindName(hop.getOutgoingInterface(),
+                dotlessAddress(hop.getAddress()),
+                String.valueOf(hop.getWeight()));
+    }
+
+
+    public String uniqueRouteHopName(@Nonnull final FibPath path,
+                                     @Nonnull final MappingContext mappingContext) {
+        return bindName(interfaceContext.getName(path.swIfIndex, mappingContext),
+                dotlessAddress(path.nextHop), String.valueOf(path.weight));
+    }
+
+    private String dotlessAddress(final byte[] address) {
+        // trimming in case of ipv4 address beeing sent as 16 byte array
+        byte[] trimmed = address;
+        if (trimmed.length > 4) {
+            trimmed = Arrays.copyOfRange(trimmed, 0, 4);
+        }
+
+        //no reverting, just takes address as it is and converts it
+        try {
+            return dotless(InetAddress.getByAddress(trimmed).getHostAddress());
+        } catch (UnknownHostException e) {
+            throw new IllegalArgumentException(e);
+        }
+    }
+
+    private String dotlessAddress(@Nonnull final Ipv4Prefix address) {
+        final String addressValue = address.getValue();
+        return dotless(addressValue.substring(0, addressValue.indexOf("/")));
+    }
+
+    private String dotlessAddress(@Nonnull final Ipv4Address address) {
+        return dotless(address.getValue());
+    }
+
+    private String dotless(@Nonnull final String input) {
+        return input.replace(DOT, EMPTY);
+    }
+}