HONEYCOMB-281 Loopback interface management

Change-Id: I7e4d817bb7dfe9ccd779e59347c956233c012e4a
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>

4 files changed, 130 insertions, 3 deletions

diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/InterfacesWriterFactory.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/InterfacesWriterFactory.java
index 63593afd5..7bf5a432c 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/InterfacesWriterFactory.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/InterfacesWriterFactory.java
@@ -28,15 +28,16 @@ import io.fd.honeycomb.translate.v3po.interfaces.EthernetCustomizer;
 import io.fd.honeycomb.translate.v3po.interfaces.GreCustomizer;
 import io.fd.honeycomb.translate.v3po.interfaces.InterfaceCustomizer;
 import io.fd.honeycomb.translate.v3po.interfaces.L2Customizer;
+import io.fd.honeycomb.translate.v3po.interfaces.LoopbackCustomizer;
 import io.fd.honeycomb.translate.v3po.interfaces.ProxyArpCustomizer;
 import io.fd.honeycomb.translate.v3po.interfaces.RoutingCustomizer;
 import io.fd.honeycomb.translate.v3po.interfaces.TapCustomizer;
 import io.fd.honeycomb.translate.v3po.interfaces.VhostUserCustomizer;
 import io.fd.honeycomb.translate.v3po.interfaces.VxlanCustomizer;
 import io.fd.honeycomb.translate.v3po.interfaces.VxlanGpeCustomizer;
-import io.fd.honeycomb.translate.v3po.interfaces.acl.ingress.IetfAclCustomizer;
 import io.fd.honeycomb.translate.v3po.interfaces.acl.egress.EgressIetfAclWriter;
 import io.fd.honeycomb.translate.v3po.interfaces.acl.ingress.AclCustomizer;
+import io.fd.honeycomb.translate.v3po.interfaces.acl.ingress.IetfAclCustomizer;
 import io.fd.honeycomb.translate.v3po.interfaces.acl.ingress.IngressIetfAclWriter;
 import io.fd.honeycomb.translate.v3po.interfaces.ip.Ipv4AddressCustomizer;
 import io.fd.honeycomb.translate.v3po.interfaces.ip.Ipv4Customizer;
@@ -62,6 +63,7 @@ import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev161214.interfaces._interface.Gre;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev161214.interfaces._interface.IetfAcl;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev161214.interfaces._interface.L2;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev161214.interfaces._interface.Loopback;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev161214.interfaces._interface.ProxyArp;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev161214.interfaces._interface.Routing;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev161214.interfaces._interface.Tap;
@@ -173,6 +175,10 @@ public final class InterfacesWriterFactory implements WriterFactory {
         final InstanceIdentifier<Tap> tapId = VPP_IFC_AUG_ID.child(Tap.class);
         registry.addBefore(new GenericWriter<>(tapId, new TapCustomizer(jvpp, ifcNamingContext)),
                 ifcId);
+        // Loopback(Needs to be executed before Interface customizer) =
+        final InstanceIdentifier<Loopback> loopbackId = VPP_IFC_AUG_ID.child(Loopback.class);
+        registry.addBefore(new GenericWriter<>(loopbackId, new LoopbackCustomizer(jvpp, ifcNamingContext)),
+                ifcId);
 
         // Gre(Needs to be executed before Interface customizer) =
         final InstanceIdentifier<Gre> greId = VPP_IFC_AUG_ID.child(Gre.class);
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfaces/LoopbackCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfaces/LoopbackCustomizer.java
new file mode 100644
index 000000000..47a71750d
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfaces/LoopbackCustomizer.java
@@ -0,0 +1,112 @@
+/*
+ * 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.translate.v3po.interfaces;
+
+import io.fd.honeycomb.translate.vpp.util.AbstractInterfaceTypeCustomizer;
+import io.fd.honeycomb.translate.vpp.util.JvppReplyConsumer;
+import io.fd.honeycomb.translate.vpp.util.MacTranslator;
+import io.fd.honeycomb.translate.vpp.util.NamingContext;
+import io.fd.honeycomb.translate.write.WriteContext;
+import io.fd.honeycomb.translate.write.WriteFailedException;
+import io.fd.vpp.jvpp.core.dto.CreateLoopback;
+import io.fd.vpp.jvpp.core.dto.CreateLoopbackReply;
+import io.fd.vpp.jvpp.core.dto.DeleteLoopback;
+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.InterfaceType;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev161214.interfaces._interface.Loopback;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public final class LoopbackCustomizer extends AbstractInterfaceTypeCustomizer<Loopback>
+        implements MacTranslator, JvppReplyConsumer {
+
+    private static final Logger LOG = LoggerFactory.getLogger(LoopbackCustomizer.class);
+    private final NamingContext interfaceContext;
+
+    public LoopbackCustomizer(final FutureJVppCore vppApi, final NamingContext interfaceContext) {
+        super(vppApi);
+        this.interfaceContext = interfaceContext;
+    }
+
+    @Override
+    protected Class<? extends InterfaceType> getExpectedInterfaceType() {
+        return org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev161214.Loopback.class;
+    }
+
+    @Override
+    protected final void writeInterface(@Nonnull final InstanceIdentifier<Loopback> id, @Nonnull final Loopback dataAfter,
+                                        @Nonnull final WriteContext writeContext)
+            throws WriteFailedException {
+        final String ifcName = id.firstKeyOf(Interface.class).getName();
+        createLoopback(id, ifcName, dataAfter, writeContext);
+    }
+
+    @Override
+    public void updateCurrentAttributes(@Nonnull final InstanceIdentifier<Loopback> id, @Nonnull final Loopback dataBefore,
+                                        @Nonnull final Loopback dataAfter, @Nonnull final WriteContext writeContext)
+            throws WriteFailedException {
+        throw new WriteFailedException.UpdateFailedException(id, dataBefore, dataAfter,
+                new UnsupportedOperationException("Modification of loopback interface is not supported"));
+    }
+
+    @Override
+    public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<Loopback> id, @Nonnull final Loopback dataBefore,
+                                        @Nonnull final WriteContext writeContext)
+            throws WriteFailedException {
+        final String ifcName = id.firstKeyOf(Interface.class).getName();
+
+        final int index;
+        try {
+            index = interfaceContext.getIndex(ifcName, writeContext.getMappingContext());
+        } catch (IllegalArgumentException e) {
+            throw new WriteFailedException.DeleteFailedException(id, e);
+        }
+
+        deleteLoopback(id, ifcName, index, dataBefore, writeContext);
+    }
+
+    private void createLoopback(final InstanceIdentifier<Loopback> id, final String swIfName, final Loopback loopback,
+                                final WriteContext writeContext) throws WriteFailedException {
+        LOG.debug("Setting loopback interface: {}. Loopback: {}", swIfName, loopback);
+
+        final CreateLoopback createLoopback = new CreateLoopback();
+        if (loopback.getMac() != null) {
+            createLoopback.macAddress = parseMac(loopback.getMac().getValue());
+        }
+        final CreateLoopbackReply reply =
+                getReplyForCreate(getFutureJVpp().createLoopback(createLoopback).toCompletableFuture(), id, loopback);
+
+        LOG.debug("Loopback set successfully for: {}, loopback: {}", swIfName, loopback);
+        // Add new interface to our interface context
+        interfaceContext.addName(reply.swIfIndex, swIfName, writeContext.getMappingContext());
+    }
+
+    private void deleteLoopback(final InstanceIdentifier<Loopback> id, final String swIfName, final int index,
+                           final Loopback dataBefore, final WriteContext writeContext)
+            throws WriteFailedException {
+        LOG.debug("Deleting loopback interface: {}. Loopback: {}", swIfName, dataBefore);
+        final DeleteLoopback deleteLoopback = new DeleteLoopback();
+        deleteLoopback.swIfIndex = index;
+        getReplyForDelete(getFutureJVpp().deleteLoopback(deleteLoopback).toCompletableFuture(), id);
+        LOG.debug("Loopback deleted successfully for: {}, loopback: {}", swIfName, dataBefore);
+        // Remove deleted interface from interface context
+        interfaceContext.removeName(swIfName, writeContext.getMappingContext());
+    }
+}
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfacesstate/InterfaceCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfacesstate/InterfaceCustomizer.java
index fdb8397dd..4308f34a0 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfacesstate/InterfaceCustomizer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfacesstate/InterfaceCustomizer.java
@@ -72,6 +72,11 @@ public class InterfaceCustomizer extends FutureJVppCustomizer
         this.interfaceDisableContext = interfaceDisableContext;
     }
 
+    public static void cacheInterfaceDump(final @Nonnull ReadContext context, final SwInterfaceDetailsReplyDump ifaces) {
+        context.getModificationCache().put(DUMPED_IFCS_CONTEXT_KEY, ifaces.swInterfaceDetails.stream()
+                .collect(Collectors.toMap(t -> t.swIfIndex, swInterfaceDetails -> swInterfaceDetails)));
+    }
+
     @Nonnull
     @SuppressWarnings("unchecked")
     public static Map<Integer, SwInterfaceDetails> getCachedInterfaceDump(@Nonnull final ModificationCache ctx) {
@@ -155,8 +160,7 @@ public class InterfaceCustomizer extends FutureJVppCustomizer
         }
 
         // Cache interfaces dump in per-tx context to later be used in readCurrentAttributes
-        context.getModificationCache().put(DUMPED_IFCS_CONTEXT_KEY, ifaces.swInterfaceDetails.stream()
-                .collect(Collectors.toMap(t -> t.swIfIndex, swInterfaceDetails -> swInterfaceDetails)));
+        cacheInterfaceDump(context, ifaces);
 
         final MappingContext mappingCtx = context.getMappingContext();
         final Set<Integer> interfacesIdxs = ifaces.swInterfaceDetails.stream()
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfacesstate/InterfaceDataTranslator.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfacesstate/InterfaceDataTranslator.java
index 376b7863f..2864c6e6a 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfacesstate/InterfaceDataTranslator.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfacesstate/InterfaceDataTranslator.java
@@ -40,6 +40,7 @@ import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.
 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface;
 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Gauge64;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev161214.GreTunnel;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev161214.Loopback;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev161214.Tap;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev161214.VhostUser;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev161214.VxlanGpeTunnel;
@@ -253,6 +254,10 @@ public interface InterfaceDataTranslator extends ByteDataTranslator, JvppReplyCo
             return VhostUser.class;
         }
 
+        if (interfaceName.startsWith("loop")) {
+            return Loopback.class;
+        }
+
         return EthernetCsmacd.class;
     }