1 files changed, 143 insertions, 0 deletions
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfacesstate/GreCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfacesstate/GreCustomizer.java
new file mode 100644
index 000000000..a17a1f15b
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfacesstate/GreCustomizer.java
@@ -0,0 +1,143 @@
+/*
+ * Copyright (c) 2016 Intel 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.interfacesstate;
+
+import static com.google.common.base.Preconditions.checkState;
+import static io.fd.honeycomb.translate.v3po.interfacesstate.InterfaceUtils.isInterfaceOfType;
+
+import io.fd.honeycomb.translate.read.ReadContext;
+import io.fd.honeycomb.translate.read.ReadFailedException;
+import io.fd.honeycomb.translate.spi.read.ReaderCustomizer;
+import io.fd.honeycomb.translate.v3po.util.FutureJVppCustomizer;
+import io.fd.honeycomb.translate.v3po.util.NamingContext;
+import io.fd.honeycomb.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.GreTunnel;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.Gre;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.GreBuilder;
+import org.opendaylight.yangtools.concepts.Builder;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.openvpp.jvpp.VppBaseCallException;
+import org.openvpp.jvpp.dto.GreTunnelDetails;
+import org.openvpp.jvpp.dto.GreTunnelDetailsReplyDump;
+import org.openvpp.jvpp.dto.GreTunnelDump;
+import org.openvpp.jvpp.future.FutureJVpp;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class GreCustomizer extends FutureJVppCustomizer
+        implements ReaderCustomizer<Gre, GreBuilder> {
+
+    private static final Logger LOG = LoggerFactory.getLogger(GreCustomizer.class);
+    private NamingContext interfaceContext;
+
+    public GreCustomizer(@Nonnull final FutureJVpp jvpp, @Nonnull final NamingContext interfaceContext) {
+        super(jvpp);
+        this.interfaceContext = interfaceContext;
+    }
+
+    @Override
+    public void merge(@Nonnull Builder<? extends DataObject> parentBuilder,
+                      @Nonnull Gre readValue) {
+        ((VppInterfaceStateAugmentationBuilder) parentBuilder).setGre(readValue);
+    }
+
+    @Nonnull
+    @Override
+    public GreBuilder getBuilder(@Nonnull InstanceIdentifier<Gre> id) {
+        return new GreBuilder();
+    }
+
+    @Override
+    public void readCurrentAttributes(@Nonnull final InstanceIdentifier<Gre> id,
+                                      @Nonnull final GreBuilder builder,
+                                      @Nonnull final ReadContext ctx) throws ReadFailedException {
+        try {
+            final InterfaceKey key = id.firstKeyOf(Interface.class);
+            final int index = interfaceContext.getIndex(key.getName(), ctx.getMappingContext());
+            if (!isInterfaceOfType(getFutureJVpp(), ctx.getModificationCache(), id, index, GreTunnel.class)) {
+                return;
+            }
+
+            LOG.debug("Reading attributes for gre tunnel: {}", key.getName());
+            // Dump just a single
+            final GreTunnelDump request = new GreTunnelDump();
+            request.swIfIndex = index;
+
+            final CompletionStage<GreTunnelDetailsReplyDump> swInterfaceGreDetailsReplyDumpCompletionStage =
+                getFutureJVpp().greTunnelDump(request);
+            final GreTunnelDetailsReplyDump reply =
+                TranslateUtils.getReplyForRead(swInterfaceGreDetailsReplyDumpCompletionStage.toCompletableFuture(), id);
+
+            // VPP keeps gre tunnel interfaces even after they were deleted (optimization)
+            // However there ar no longer any gre tunnel specific fields assigned to it and this call
+            // returns nothing
+            if (reply == null || reply.greTunnelDetails == null || reply.greTunnelDetails.isEmpty()) {
+                LOG.debug(
+                    "Gre tunnel {}, id {} has no attributes assigned in VPP. Probably is a leftover interface placeholder" +
+                        "after delete", key.getName(), index);
+                return;
+            }
+
+            checkState(reply.greTunnelDetails.size() == 1,
+                "Unexpected number of returned gre tunnels: {} for tunnel: {}", reply.greTunnelDetails, key.getName());
+            LOG.trace("Gre tunnel: {} attributes returned from VPP: {}", key.getName(), reply);
+
+            final GreTunnelDetails swInterfaceGreDetails = reply.greTunnelDetails.get(0);
+            if (swInterfaceGreDetails.isIpv6 == 1) {
+                final Ipv6Address dstIpv6 =
+                    new Ipv6Address(parseAddress(swInterfaceGreDetails.dstAddress).getHostAddress());
+                builder.setDst(new IpAddress(dstIpv6));
+                final Ipv6Address srcIpv6 =
+                    new Ipv6Address(parseAddress(swInterfaceGreDetails.srcAddress).getHostAddress());
+                builder.setSrc(new IpAddress(srcIpv6));
+            } else {
+                final byte[] dstBytes = Arrays.copyOfRange(swInterfaceGreDetails.dstAddress, 0, 4);
+                final Ipv4Address dstIpv4 = new Ipv4Address(parseAddress(dstBytes).getHostAddress());
+                builder.setDst(new IpAddress(dstIpv4));
+                final byte[] srcBytes = Arrays.copyOfRange(swInterfaceGreDetails.srcAddress, 0, 4);
+                final Ipv4Address srcIpv4 = new Ipv4Address(parseAddress(srcBytes).getHostAddress());
+                builder.setSrc(new IpAddress(srcIpv4));
+            }
+            builder.setOuterFibId((long) swInterfaceGreDetails.outerFibId);
+            LOG.debug("Gre tunnel: {}, id: {} attributes read as: {}", key.getName(), index, builder);
+        } catch (VppBaseCallException e) {
+            LOG.warn("Failed to readCurrentAttributes for: {}", id, e);
+            throw new ReadFailedException( id, e );
+        }
+    }
+
+    @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);
+        }
+    }
+}