HONEYCOMB-71: Add VxLAN-GPE feature

Patchset 3: Add Vxlan-gpe requests in postman_rest_collection.json

Patchset 2: Fix the indent issue.

Change-Id: If42b667f60a3591efc4b79353d78935277f8fb4d
Signed-off-by: Hongjun Ni <hongjun.ni@intel.com>

3 files changed, 351 insertions, 0 deletions

diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/initializers/InterfacesInitializer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/initializers/InterfacesInitializer.java
index 3571fbc90..38ab58af1 100644
--- a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/initializers/InterfacesInitializer.java
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/initializers/InterfacesInitializer.java
@@ -31,18 +31,21 @@ 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.rev150105.VppInterfaceAugmentationBuilder;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VppInterfaceStateAugmentation;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VxlanVni;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VxlanGpeVni;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces._interface.EthernetBuilder;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces._interface.L2Builder;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces._interface.SubInterfaceBuilder;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces._interface.TapBuilder;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces._interface.VhostUserBuilder;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces._interface.VxlanBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces._interface.VxlanGpeBuilder;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.Ethernet;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.L2;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.SubInterface;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.Tap;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.VhostUser;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.Vxlan;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.VxlanGpe;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.l2.attributes.Interconnection;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.l2.attributes.VlanTagRewrite;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.l2.attributes.VlanTagRewriteBuilder;
@@ -99,6 +102,11 @@ public class InterfacesInitializer extends AbstractDataTreeConverter<InterfacesS
                 setVxlan(augmentBuilder, vxlan);
             }
 
+            final VxlanGpe vxlanGpe = vppIfcAugmentation.getVxlanGpe();
+            if(vxlanGpe != null) {
+                setVxlanGpe(augmentBuilder, vxlanGpe);
+            }
+
             final Tap tap = vppIfcAugmentation.getTap();
             if(tap != null) {
                 setTap(input, augmentBuilder, tap);
@@ -224,4 +232,15 @@ public class InterfacesInitializer extends AbstractDataTreeConverter<InterfacesS
         vxlanBuilder.setVni(new VxlanVni(vxlan.getVni()));
         augmentBuilder.setVxlan(vxlanBuilder.build());
     }
+
+    private static void setVxlanGpe(final VppInterfaceAugmentationBuilder augmentBuilder, final VxlanGpe vxlanGpe) {
+        final VxlanGpeBuilder vxlanGpeBuilder = new VxlanGpeBuilder();
+        vxlanGpeBuilder.setLocal(vxlanGpe.getLocal());
+        vxlanGpeBuilder.setRemote(vxlanGpe.getRemote());
+        vxlanGpeBuilder.setVni(new VxlanGpeVni(vxlanGpe.getVni()));
+        vxlanGpeBuilder.setNextProtocol(vxlanGpe.getNextProtocol());
+        vxlanGpeBuilder.setEncapVrfId(vxlanGpe.getEncapVrfId());
+        vxlanGpeBuilder.setDecapVrfId(vxlanGpe.getDecapVrfId());
+        augmentBuilder.setVxlanGpe(vxlanGpeBuilder.build());
+    }
 }
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/VxlanGpeCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/VxlanGpeCustomizer.java
new file mode 100644
index 000000000..7d9641122
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfaces/VxlanGpeCustomizer.java
@@ -0,0 +1,191 @@
+/*
+ * 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.v3po.translate.v3po.interfaces;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+import com.google.common.base.Optional;
+import com.google.common.net.InetAddresses;
+import io.fd.honeycomb.v3po.translate.v3po.util.AbstractInterfaceTypeCustomizer;
+import io.fd.honeycomb.v3po.translate.v3po.util.NamingContext;
+import io.fd.honeycomb.v3po.translate.v3po.util.VppApiInvocationException;
+import io.fd.honeycomb.v3po.translate.v3po.util.TranslateUtils;
+import io.fd.honeycomb.v3po.translate.write.WriteContext;
+import io.fd.honeycomb.v3po.translate.write.WriteFailedException;
+import java.net.InetAddress;
+import java.util.concurrent.CompletionStage;
+import javax.annotation.Nonnull;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
+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.rev150105.VppInterfaceAugmentation;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VxlanGpeTunnel;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces._interface.VxlanGpe;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.openvpp.jvpp.dto.VxlanGpeAddDelTunnel;
+import org.openvpp.jvpp.dto.VxlanGpeAddDelTunnelReply;
+import org.openvpp.jvpp.future.FutureJVpp;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+// TODO extract common code from all Interface type specific writer customizers into a superclass
+public class VxlanGpeCustomizer extends AbstractInterfaceTypeCustomizer<VxlanGpe> {
+
+    private static final Logger LOG = LoggerFactory.getLogger(VxlanGpeCustomizer.class);
+    private final NamingContext interfaceContext;
+
+    public VxlanGpeCustomizer(final FutureJVpp vppApi, final NamingContext interfaceContext) {
+        super(vppApi);
+        this.interfaceContext = interfaceContext;
+    }
+
+    @Nonnull
+    @Override
+    public Optional<VxlanGpe> extract(@Nonnull final InstanceIdentifier<VxlanGpe> currentId,
+                                   @Nonnull final DataObject parentData) {
+        return Optional.fromNullable(((VppInterfaceAugmentation) parentData).getVxlanGpe());
+    }
+
+    @Override
+    protected Class<? extends InterfaceType> getExpectedInterfaceType() {
+        return VxlanGpeTunnel.class;
+    }
+
+    @Override
+    protected final void writeInterface(@Nonnull final InstanceIdentifier<VxlanGpe> id, @Nonnull final VxlanGpe dataAfter,
+                                       @Nonnull final WriteContext writeContext)
+            throws WriteFailedException.CreateFailedException {
+        try {
+            createVxlanGpeTunnel(id.firstKeyOf(Interface.class).getName(), dataAfter, writeContext);
+        } catch (VppApiInvocationException | IllegalInterfaceTypeException e) {
+            LOG.warn("Write of VxlanGpe failed", e);
+            throw new WriteFailedException.CreateFailedException(id, dataAfter, e);
+        }
+    }
+
+    @Override
+    public void updateCurrentAttributes(@Nonnull final InstanceIdentifier<VxlanGpe> id, @Nonnull final VxlanGpe dataBefore,
+                                        @Nonnull final VxlanGpe dataAfter, @Nonnull final WriteContext writeContext)
+            throws WriteFailedException.UpdateFailedException {
+        throw new WriteFailedException.UpdateFailedException(id, dataBefore, dataAfter,
+                new UnsupportedOperationException("VxlanGpe tunnel update is not supported"));
+    }
+
+    @Override
+    public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<VxlanGpe> id, @Nonnull final VxlanGpe dataBefore,
+                                        @Nonnull final WriteContext writeContext)
+            throws WriteFailedException.DeleteFailedException {
+        try {
+            deleteVxlanGpeTunnel(id.firstKeyOf(Interface.class).getName(), dataBefore, writeContext);
+        } catch (VppApiInvocationException e) {
+            LOG.warn("Delete of VxlanGpe tunnel failed", e);
+            throw new WriteFailedException.DeleteFailedException(id, e);
+        }
+    }
+
+    private void createVxlanGpeTunnel(final String swIfName, final VxlanGpe VxlanGpe, final WriteContext writeContext) throws VppApiInvocationException {
+        final byte isIpv6 = (byte) (isIpv6(VxlanGpe) ? 1 : 0);
+        final InetAddress Local = InetAddresses.forString(getAddressString(VxlanGpe.getLocal()));
+        final InetAddress Remote = InetAddresses.forString(getAddressString(VxlanGpe.getRemote()));
+
+        int vni = VxlanGpe.getVni().getValue().intValue();
+        byte protocol = (byte) VxlanGpe.getNextProtocol().getIntValue();
+        int encapVrfId = VxlanGpe.getEncapVrfId().intValue();
+        int decapVrfId = VxlanGpe.getDecapVrfId().intValue();
+
+        LOG.debug("Setting VxlanGpe tunnel for interface: {}. VxlanGpe: {}", swIfName, VxlanGpe);
+        final CompletionStage<VxlanGpeAddDelTunnelReply> VxlanGpeAddDelTunnelReplyCompletionStage =
+                getFutureJVpp().vxlanGpeAddDelTunnel(getVxlanGpeTunnelRequest((byte) 1 /* is add */, Local.getAddress(),
+                    Remote.getAddress(), vni, protocol, encapVrfId, decapVrfId, isIpv6));
+
+        final VxlanGpeAddDelTunnelReply reply =
+                TranslateUtils.getReply(VxlanGpeAddDelTunnelReplyCompletionStage.toCompletableFuture());
+        if (reply.retval < 0) {
+            LOG.debug("Failed to set VxlanGpe tunnel for interface: {}, VxlanGpe: {}", swIfName, VxlanGpe);
+            throw new VppApiInvocationException("VxlanGpeAddDelTunnel", reply.context, reply.retval);
+        } else {
+            LOG.debug("VxlanGpe tunnel set successfully for: {}, VxlanGpe: {}", swIfName, VxlanGpe);
+            if(interfaceContext.containsName(reply.swIfIndex, writeContext.getMappingContext())) {
+                final String formerName = interfaceContext.getName(reply.swIfIndex, writeContext.getMappingContext());
+                LOG.debug("Removing updated mapping of a vxlan-gpe tunnel, id: {}, former name: {}, new name: {}",
+                    reply.swIfIndex, formerName, swIfName);
+                interfaceContext.removeName(formerName, writeContext.getMappingContext());
+            }
+            // Add new interface to our interface context
+            interfaceContext.addName(reply.swIfIndex, swIfName, writeContext.getMappingContext());
+        }
+    }
+
+    private boolean isIpv6(final VxlanGpe VxlanGpe) {
+        if (VxlanGpe.getLocal().getIpv4Address() == null) {
+            checkArgument(VxlanGpe.getRemote().getIpv4Address() == null, "Inconsistent ip addresses: %s, %s", VxlanGpe.getLocal(),
+                VxlanGpe.getRemote());
+            return true;
+        } else {
+            checkArgument(VxlanGpe.getRemote().getIpv6Address() == null, "Inconsistent ip addresses: %s, %s", VxlanGpe.getLocal(),
+                VxlanGpe.getRemote());
+            return false;
+        }
+    }
+
+    private String getAddressString(final IpAddress addr) {
+        return addr.getIpv4Address() == null ? addr.getIpv6Address().getValue() : addr.getIpv4Address().getValue();
+    }
+
+    private void deleteVxlanGpeTunnel(final String swIfName, final VxlanGpe VxlanGpe, final WriteContext writeContext) throws VppApiInvocationException {
+        final byte isIpv6 = (byte) (isIpv6(VxlanGpe) ? 1 : 0);
+        final InetAddress local = InetAddresses.forString(getAddressString(VxlanGpe.getLocal()));
+        final InetAddress remote = InetAddresses.forString(getAddressString(VxlanGpe.getRemote()));
+
+        int vni = VxlanGpe.getVni().getValue().intValue();
+        byte protocol = (byte) VxlanGpe.getNextProtocol().getIntValue();
+        int encapVrfId = VxlanGpe.getEncapVrfId().intValue();
+        int decapVrfId = VxlanGpe.getDecapVrfId().intValue();
+
+        LOG.debug("Deleting VxlanGpe tunnel for interface: {}. VxlanGpe: {}", swIfName, VxlanGpe);
+        final CompletionStage<VxlanGpeAddDelTunnelReply> VxlanGpeAddDelTunnelReplyCompletionStage =
+                getFutureJVpp().vxlanGpeAddDelTunnel(getVxlanGpeTunnelRequest((byte) 0 /* is delete */, local.getAddress(),
+                    remote.getAddress(), vni, protocol, encapVrfId, decapVrfId, isIpv6));
+
+        final VxlanGpeAddDelTunnelReply reply =
+                TranslateUtils.getReply(VxlanGpeAddDelTunnelReplyCompletionStage.toCompletableFuture());
+        if (reply.retval < 0) {
+            LOG.debug("Failed to delete VxlanGpe tunnel for interface: {}, VxlanGpe: {}", swIfName, VxlanGpe);
+            throw new VppApiInvocationException("VxlanGpeAddDelTunnel", reply.context, reply.retval);
+        } else {
+            LOG.debug("VxlanGpe tunnel deleted successfully for: {}, VxlanGpe: {}", swIfName, VxlanGpe);
+            // Remove interface from our interface context
+            interfaceContext.removeName(swIfName, writeContext.getMappingContext());
+        }
+    }
+
+    private static VxlanGpeAddDelTunnel getVxlanGpeTunnelRequest(final byte isAdd, final byte[] local, final byte[] remote,
+                                        final int vni, final byte protocol, final int encapVrfId, final int decapVrfId, 
+                                        final byte isIpv6) {
+        final VxlanGpeAddDelTunnel VxlanGpeAddDelTunnel = new VxlanGpeAddDelTunnel();
+        VxlanGpeAddDelTunnel.isAdd = isAdd;
+        VxlanGpeAddDelTunnel.local = local;
+        VxlanGpeAddDelTunnel.remote = remote;
+        VxlanGpeAddDelTunnel.vni = vni;
+        VxlanGpeAddDelTunnel.protocol = protocol;
+        VxlanGpeAddDelTunnel.encapVrfId = encapVrfId;
+        VxlanGpeAddDelTunnel.decapVrfId = decapVrfId;
+        VxlanGpeAddDelTunnel.isIpv6 = isIpv6;
+        return VxlanGpeAddDelTunnel;
+    }
+}
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/VxlanGpeCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/VxlanGpeCustomizer.java
new file mode 100644
index 000000000..64a5b895a
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/VxlanGpeCustomizer.java
@@ -0,0 +1,141 @@
+/*
+ * 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.v3po.translate.v3po.interfacesstate;
+
+import static com.google.common.base.Preconditions.checkState;
+
+import io.fd.honeycomb.v3po.translate.read.ReadContext;
+import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
+import io.fd.honeycomb.v3po.translate.spi.read.ChildReaderCustomizer;
+import io.fd.honeycomb.v3po.translate.v3po.util.FutureJVppCustomizer;
+import io.fd.honeycomb.v3po.translate.v3po.util.NamingContext;
+import io.fd.honeycomb.v3po.translate.v3po.util.TranslateUtils;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.util.Arrays;
+import java.util.concurrent.CompletionStage;
+import javax.annotation.Nonnull;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
+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.Ipv6Address;
+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.interfaces.rev140508.interfaces.state.InterfaceKey;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VppInterfaceStateAugmentationBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VxlanGpeTunnel;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VxlanGpeVni;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.VxlanGpe;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.VxlanGpeBuilder;
+import org.opendaylight.yangtools.concepts.Builder;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.openvpp.jvpp.dto.VxlanGpeTunnelDetails;
+import org.openvpp.jvpp.dto.VxlanGpeTunnelDetailsReplyDump;
+import org.openvpp.jvpp.dto.VxlanGpeTunnelDump;
+import org.openvpp.jvpp.future.FutureJVpp;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class VxlanGpeCustomizer extends FutureJVppCustomizer
+        implements ChildReaderCustomizer<VxlanGpe, VxlanGpeBuilder> {
+
+    private static final Logger LOG = LoggerFactory.getLogger(VxlanGpeCustomizer.class);
+    private NamingContext interfaceContext;
+
+    public VxlanGpeCustomizer(@Nonnull final FutureJVpp jvpp, @Nonnull final NamingContext interfaceContext) {
+        super(jvpp);
+        this.interfaceContext = interfaceContext;
+    }
+
+    @Override
+    public void merge(@Nonnull Builder<? extends DataObject> parentBuilder,
+                      @Nonnull VxlanGpe readValue) {
+        ((VppInterfaceStateAugmentationBuilder) parentBuilder).setVxlanGpe(readValue);
+    }
+
+    @Nonnull
+    @Override
+    public VxlanGpeBuilder getBuilder(@Nonnull InstanceIdentifier<VxlanGpe> id) {
+        return new VxlanGpeBuilder();
+    }
+
+    @Override
+    public void readCurrentAttributes(@Nonnull final InstanceIdentifier<VxlanGpe> id,
+                                      @Nonnull final VxlanGpeBuilder builder,
+                                      @Nonnull final ReadContext ctx) throws ReadFailedException {
+        final InterfaceKey key = id.firstKeyOf(Interface.class);
+        // Relying here that parent InterfaceCustomizer was invoked first (PREORDER)
+        // to fill in the context with initial ifc mapping
+        final int index = interfaceContext.getIndex(key.getName(), ctx.getMappingContext());
+        if (!InterfaceUtils.isInterfaceOfType(ctx.getModificationCache(), index, VxlanGpeTunnel.class)) {
+            return;
+        }
+
+        LOG.debug("Reading attributes for VxlanGpe tunnel: {}", key.getName());
+        // Dump just a single
+        final VxlanGpeTunnelDump request = new VxlanGpeTunnelDump();
+        request.swIfIndex = index;
+
+        final CompletionStage<VxlanGpeTunnelDetailsReplyDump> swInterfaceVxlanGpeDetailsReplyDumpCompletionStage =
+            getFutureJVpp().vxlanGpeTunnelDump(request);
+        final VxlanGpeTunnelDetailsReplyDump reply =
+            TranslateUtils.getReply(swInterfaceVxlanGpeDetailsReplyDumpCompletionStage.toCompletableFuture());
+
+        // VPP keeps VxlanGpe tunnel interfaces even after they were deleted (optimization)
+        // However there are no longer any VxlanGpe tunnel specific fields assigned to it and this call
+        // returns nothing
+        if (reply == null || reply.vxlanGpeTunnelDetails == null || reply.vxlanGpeTunnelDetails.isEmpty()) {
+            LOG.debug(
+                "VxlanGpe tunnel {}, id {} has no attributes assigned in VPP. Probably is a leftover interface placeholder" +
+                    "after delete", key.getName(), index);
+            return;
+        }
+
+        checkState(reply.vxlanGpeTunnelDetails.size() == 1,
+            "Unexpected number of returned VxlanGpe tunnels: {} for tunnel: {}", reply.vxlanGpeTunnelDetails, key.getName());
+        LOG.trace("VxlanGpe tunnel: {} attributes returned from VPP: {}", key.getName(), reply);
+
+        final VxlanGpeTunnelDetails swInterfaceVxlanGpeDetails = reply.vxlanGpeTunnelDetails.get(0);
+        if (swInterfaceVxlanGpeDetails.isIpv6 == 1) {
+            final Ipv6Address remote6 =
+                new Ipv6Address(parseAddress(swInterfaceVxlanGpeDetails.remote).getHostAddress());
+            builder.setRemote(new IpAddress(remote6));
+            final Ipv6Address local6 =
+                new Ipv6Address(parseAddress(swInterfaceVxlanGpeDetails.local).getHostAddress());
+            builder.setLocal(new IpAddress(local6));
+        } else {
+            final byte[] dstBytes = Arrays.copyOfRange(swInterfaceVxlanGpeDetails.remote, 0, 4);
+            final Ipv4Address remote4 = new Ipv4Address(parseAddress(dstBytes).getHostAddress());
+            builder.setRemote(new IpAddress(remote4));
+            final byte[] srcBytes = Arrays.copyOfRange(swInterfaceVxlanGpeDetails.local, 0, 4);
+            final Ipv4Address local4 = new Ipv4Address(parseAddress(srcBytes).getHostAddress());
+            builder.setLocal(new IpAddress(local4));
+        }
+        builder.setVni(new VxlanGpeVni((long) swInterfaceVxlanGpeDetails.vni));
+        builder.setEncapVrfId((long) swInterfaceVxlanGpeDetails.encapVrfId);
+        builder.setDecapVrfId((long) swInterfaceVxlanGpeDetails.decapVrfId);
+        LOG.debug("VxlanGpe tunnel: {}, id: {} attributes read as: {}", key.getName(), index, builder);
+    }
+
+    @Nonnull
+    private static InetAddress parseAddress(@Nonnull final byte[] addr) {
+        try {
+            return InetAddress.getByAddress(addr);
+        } catch (UnknownHostException e) {
+            throw new IllegalArgumentException("Cannot create InetAddress from " + Arrays.toString(addr), e);
+        }
+    }
+}