HONEYCOMB-37: Add Vxlan operational read support

Change-Id: If2050ed67da2f17b13dc4de0cae6eabddb3b389b
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>

2 files changed, 150 insertions, 0 deletions

diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/VxlanCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/VxlanCustomizer.java
new file mode 100644
index 000000000..18bf01d6c
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/VxlanCustomizer.java
@@ -0,0 +1,143 @@
+/*
+ * 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 io.fd.honeycomb.v3po.translate.Context;
+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.utils.V3poUtils;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.CompletionStage;
+import java.util.stream.Collectors;
+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.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.interfaces.state._interface.Vxlan;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.VxlanBuilder;
+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.VxlanTunnelDetails;
+import org.openvpp.jvpp.dto.VxlanTunnelDetailsReplyDump;
+import org.openvpp.jvpp.dto.VxlanTunnelDump;
+import org.openvpp.jvpp.future.FutureJVpp;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+public class VxlanCustomizer extends FutureJVppCustomizer
+        implements ChildReaderCustomizer<Vxlan, VxlanBuilder> {
+
+    private static final Logger LOG = LoggerFactory.getLogger(VxlanCustomizer.class);
+    public static final String DUMPED_VXLANS_CONTEXT_KEY = VxlanCustomizer.class.getName() + "dumpedVxlansDuringGetAllIds";
+    private NamingContext interfaceContext;
+
+    public VxlanCustomizer(@Nonnull final FutureJVpp jvpp,
+                           final NamingContext interfaceContext) {
+        super(jvpp);
+        this.interfaceContext = interfaceContext;
+    }
+
+    @Override
+    public void merge(@Nonnull Builder<? extends DataObject> parentBuilder,
+                      @Nonnull Vxlan readValue) {
+        ((VppInterfaceStateAugmentationBuilder) parentBuilder).setVxlan(readValue);
+    }
+
+    @Nonnull
+    @Override
+    public VxlanBuilder getBuilder(
+            @Nonnull InstanceIdentifier<Vxlan> id) {
+        return new VxlanBuilder();
+    }
+
+    @Override
+    public void readCurrentAttributes(@Nonnull final InstanceIdentifier<Vxlan> id,
+                                      @Nonnull final VxlanBuilder builder,
+                                      @Nonnull final Context ctx) throws ReadFailedException {
+        final InterfaceKey key = id.firstKeyOf(Interface.class);
+
+        // TODO add logging
+
+        // FIXME this should take different approach than Tap or Vhost customizers since vxlan dump allows
+        // to specify interface index, making it possible to dump just a single interface
+        // However we need to determine the type of current interface somehow to know it is vxlan type and we can perform
+        // the dump (InterfaceCustomizer can store the type in ctx)
+
+        @SuppressWarnings("unchecked")
+        Map<Integer, VxlanTunnelDetails> mappedVxlans =
+            (Map<Integer, VxlanTunnelDetails>) ctx.get(DUMPED_VXLANS_CONTEXT_KEY);
+
+        if(mappedVxlans == null) {
+            // Full Vxlan dump has to be performed here, no filter or anything is here to help so at least we cache it
+            final VxlanTunnelDump request = new VxlanTunnelDump();
+            request.swIfIndex = -1;
+
+            final CompletionStage<VxlanTunnelDetailsReplyDump> swInterfaceVxlanDetailsReplyDumpCompletionStage =
+                getFutureJVpp().vxlanTunnelDump(request);
+            final VxlanTunnelDetailsReplyDump reply =
+                V3poUtils.getReply(swInterfaceVxlanDetailsReplyDumpCompletionStage.toCompletableFuture());
+
+            if(null == reply || null == reply.vxlanTunnelDetails) {
+                mappedVxlans = Collections.emptyMap();
+            } else {
+                final List<VxlanTunnelDetails> swInterfaceVxlanDetails = reply.vxlanTunnelDetails;
+                // Cache interfaces dump in per-tx context to later be used in readCurrentAttributes
+                mappedVxlans = swInterfaceVxlanDetails.stream()
+                    .collect(Collectors.toMap(t -> t.swIfIndex, swInterfaceDetails -> swInterfaceDetails));
+            }
+
+            ctx.put(DUMPED_VXLANS_CONTEXT_KEY, mappedVxlans);
+        }
+
+        // Relying here that parent InterfaceCustomizer was invoked first to fill in the context with initial ifc mapping
+        final int index = interfaceContext.getIndex(key.getName());
+        final VxlanTunnelDetails swInterfaceVxlanDetails = mappedVxlans.get(index);
+        if(swInterfaceVxlanDetails == null) {
+            // Not a Vxlan interface type
+            return;
+        }
+
+        if(swInterfaceVxlanDetails.isIpv6 == 1) {
+            // FIXME enable ipv6 in the vxlan model
+//            builder.setDst(new Ipv6Address(parseAddress(swInterfaceVxlanDetails.dstAddress).getHostAddress()));
+//            builder.setSrc(new Ipv6Address(parseAddress(swInterfaceVxlanDetails.srcAddress).getHostAddress()));
+        } else {
+            builder.setDst(new Ipv4Address(parseAddress(Arrays.copyOfRange(swInterfaceVxlanDetails.dstAddress, 0, 4)).getHostAddress()));
+            builder.setSrc(new Ipv4Address(parseAddress(Arrays.copyOfRange(swInterfaceVxlanDetails.srcAddress, 0, 4)).getHostAddress()));
+        }
+        builder.setEncapVrfId((long) swInterfaceVxlanDetails.encapVrfId);
+        builder.setVni((long) swInterfaceVxlanDetails.vni);
+    }
+
+    private InetAddress parseAddress(final byte[] addr) {
+        try {
+            return InetAddress.getByAddress(addr);
+        } catch (UnknownHostException e) {
+            throw new IllegalArgumentException("Cannot create InetAddress from " + Arrays.toString(addr), e);
+        }
+    }
+}
diff --git a/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/InterfacesStateHoneycombReaderModule.java b/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/InterfacesStateHoneycombReaderModule.java
index 3bd0e0c16..920a5e783 100644
--- a/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/InterfacesStateHoneycombReaderModule.java
+++ b/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/InterfacesStateHoneycombReaderModule.java
@@ -18,6 +18,7 @@ import io.fd.honeycomb.v3po.translate.v3po.interfacesstate.EthernetCustomizer;
 import io.fd.honeycomb.v3po.translate.v3po.interfacesstate.InterfaceCustomizer;
 import io.fd.honeycomb.v3po.translate.v3po.interfacesstate.TapCustomizer;
 import io.fd.honeycomb.v3po.translate.v3po.interfacesstate.VhostUserCustomizer;
+import io.fd.honeycomb.v3po.translate.v3po.interfacesstate.VxlanCustomizer;
 import java.util.List;
 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.InterfacesState;
 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.InterfacesStateBuilder;
@@ -29,6 +30,7 @@ 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.rev150105.interfaces.state._interface.Ethernet;
 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.yangtools.yang.binding.ChildOf;
 
 public class InterfacesStateHoneycombReaderModule extends
@@ -65,10 +67,15 @@ public class InterfacesStateHoneycombReaderModule extends
             new CompositeChildReader<>(VhostUser.class,
             new VhostUserCustomizer(getVppJvppDependency(), getInterfaceContextIfcStateDependency()));
 
+        final ChildReader<? extends ChildOf<VppInterfaceStateAugmentation>> vxlanReader =
+            new CompositeChildReader<>(Vxlan.class,
+            new VxlanCustomizer(getVppJvppDependency(), getInterfaceContextIfcStateDependency()));
+
         final List<ChildReader<? extends ChildOf<VppInterfaceStateAugmentation>>> childReaders = Lists.newArrayList();
         childReaders.add(ethernetReader);
         childReaders.add(tapReader);
         childReaders.add(vhostUserReader);
+        childReaders.add(vxlanReader);
 
         final ChildReader<VppInterfaceStateAugmentation> vppInterfaceStateAugmentationChildReader =
             new CompositeChildReader<>(VppInterfaceStateAugmentation.class,