HC2VPP-288 - add SRv6 module (writers only)

Changes:
- add new module for SRv6
- add models for SRv6 configuration:
  from https://datatracker.ietf.org/doc/draft-raza-spring-srv6-yang/
   - hc2vpp-ietf-srv6-base@2018-03-01.yang
   - hc2vpp-ietf-srv6-static@2018-03-01.yang
   - ietf-srv6-types@2018-03-01.yang
- implements Configuration of local sids and their end functions.
- implements support for FIB table management (HC2VPP-345)

Models hc2vpp-ietf-srv6-base and hc2vpp-ietf-srv6-static
are changed (HC2VPP-332):
 - imports for routing models (HC2VPP-298)
 - presence in end function containers was added to fix
   mandatory child verification if parent container is not present

Change-Id: Ib74e48023b671383f076b84773e26ce7c5ae282a
Signed-off-by: Michal Cmarada <michal.cmarada@pantheon.tech>
Signed-off-by: Jan Srnicek <jan.srnicek@pantheon.tech>

1 files changed, 76 insertions, 0 deletions

diff --git a/srv6/srv6-impl/src/main/java/io/fd/hc2vpp/srv6/util/function/lookup/TableLookupFunctionBinder.java b/srv6/srv6-impl/src/main/java/io/fd/hc2vpp/srv6/util/function/lookup/TableLookupFunctionBinder.java
new file mode 100644
index 000000000..8e6ab4f40
--- /dev/null
+++ b/srv6/srv6-impl/src/main/java/io/fd/hc2vpp/srv6/util/function/lookup/TableLookupFunctionBinder.java
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2018 Bell Canada, Pantheon Technologies 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.srv6.util.function.lookup;
+
+import static com.google.common.base.Preconditions.checkState;
+
+import com.google.common.collect.ImmutableMap;
+import io.fd.hc2vpp.common.translate.util.FutureJVppCustomizer;
+import io.fd.hc2vpp.fib.management.FibManagementIIds;
+import io.fd.hc2vpp.srv6.util.function.LocalSidFunctionBinder;
+import io.fd.hc2vpp.srv6.write.sid.request.TableLookupLocalSidRequest;
+import io.fd.honeycomb.translate.write.WriteContext;
+import io.fd.vpp.jvpp.core.future.FutureJVppCore;
+import java.util.Map;
+import javax.annotation.Nonnull;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.srv6.types.rev180301.EndDT4;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.srv6.types.rev180301.EndDT6;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.srv6.types.rev180301.EndT;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.srv6.types.rev180301.Srv6EndpointType;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.fib.table.management.rev180521.AddressFamilyIdentity;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.fib.table.management.rev180521.Ipv4;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.fib.table.management.rev180521.Ipv6;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.fib.table.management.rev180521.VniReference;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.fib.table.management.rev180521.vpp.fib.table.management.fib.tables.Table;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.fib.table.management.rev180521.vpp.fib.table.management.fib.tables.TableKey;
+import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
+
+abstract class TableLookupFunctionBinder extends FutureJVppCustomizer
+        implements LocalSidFunctionBinder<TableLookupLocalSidRequest> {
+
+    private static final Map<Class<? extends Srv6EndpointType>, Integer> REGISTER = ImmutableMap.of(
+            EndT.class, 3,
+            EndDT6.class, 8,
+            EndDT4.class, 9
+    );
+
+    TableLookupFunctionBinder(@Nonnull final FutureJVppCore api) {
+        super(api);
+        checkState(REGISTER.containsKey(getHandledFunctionType()),
+                "Unsupported type of Local SID function %s", getHandledFunctionType());
+    }
+
+    TableLookupLocalSidRequest bindData(TableLookupLocalSidRequest request, int tableIndex, final boolean isIpv6,
+                                        WriteContext ctx) {
+        // verify if the lookup table exists
+        Class<? extends AddressFamilyIdentity> adrFamily = isIpv6 ? Ipv6.class : Ipv4.class;
+        TableKey tableKey = new TableKey(adrFamily, new VniReference(Integer.toUnsignedLong(tableIndex)));
+        KeyedInstanceIdentifier<Table, TableKey> vrfIid = FibManagementIIds.FM_FIB_TABLES.child(Table.class, tableKey);
+        if (!ctx.readAfter(vrfIid).isPresent()) {
+            throw new IllegalArgumentException(
+                    String.format("VRF lookup table: %s not found. Binding failed for request: %s", tableKey, request));
+        }
+        request.setLookupFibTable(tableIndex);
+        request.setFunction(getBehaviourFunctionType());
+        return request;
+    }
+
+    @Override
+    public int getBehaviourFunctionType() {
+        return REGISTER.get(getHandledFunctionType());
+    }
+}