gerrit.fd Code Review - hc2vpp.git/blob

   1 /*
   2  * Copyright (c) 2016 Cisco and/or its affiliates.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package io.fd.honeycomb.v3po.translate.v3po.interfacesstate;
  18
  19 import static com.google.common.base.Preconditions.checkState;
  20
  21 import io.fd.honeycomb.v3po.translate.read.ReadContext;
  22 import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
  23 import io.fd.honeycomb.v3po.translate.spi.read.ChildReaderCustomizer;
  24 import io.fd.honeycomb.v3po.translate.v3po.util.FutureJVppCustomizer;
  25 import io.fd.honeycomb.v3po.translate.v3po.util.NamingContext;
  26 import io.fd.honeycomb.v3po.translate.v3po.util.TranslateUtils;
  27 import java.net.InetAddress;
  28 import java.net.UnknownHostException;
  29 import java.util.Arrays;
  30 import java.util.concurrent.CompletionStage;
  31 import javax.annotation.Nonnull;
  32 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  33 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Address;
  34 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv6Address;
  35 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface;
  36 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.InterfaceKey;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VppInterfaceStateAugmentationBuilder;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VxlanGpeTunnel;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VxlanGpeVni;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.VxlanGpe;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.VxlanGpeBuilder;
  42 import org.opendaylight.yangtools.concepts.Builder;
  43 import org.opendaylight.yangtools.yang.binding.DataObject;
  44 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  45 import org.openvpp.jvpp.dto.VxlanGpeTunnelDetails;
  46 import org.openvpp.jvpp.dto.VxlanGpeTunnelDetailsReplyDump;
  47 import org.openvpp.jvpp.dto.VxlanGpeTunnelDump;
  48 import org.openvpp.jvpp.future.FutureJVpp;
  49 import org.slf4j.Logger;
  50 import org.slf4j.LoggerFactory;
  51
  52 public class VxlanGpeCustomizer extends FutureJVppCustomizer
  53         implements ChildReaderCustomizer<VxlanGpe, VxlanGpeBuilder> {
  54
  55     private static final Logger LOG = LoggerFactory.getLogger(VxlanGpeCustomizer.class);
  56     private NamingContext interfaceContext;
  57
  58     public VxlanGpeCustomizer(@Nonnull final FutureJVpp jvpp, @Nonnull final NamingContext interfaceContext) {
  59         super(jvpp);
  60         this.interfaceContext = interfaceContext;
  61     }
  62
  63     @Override
  64     public void merge(@Nonnull Builder<? extends DataObject> parentBuilder,
  65                       @Nonnull VxlanGpe readValue) {
  66         ((VppInterfaceStateAugmentationBuilder) parentBuilder).setVxlanGpe(readValue);
  67     }
  68
  69     @Nonnull
  70     @Override
  71     public VxlanGpeBuilder getBuilder(@Nonnull InstanceIdentifier<VxlanGpe> id) {
  72         return new VxlanGpeBuilder();
  73     }
  74
  75     @Override
  76     public void readCurrentAttributes(@Nonnull final InstanceIdentifier<VxlanGpe> id,
  77                                       @Nonnull final VxlanGpeBuilder builder,
  78                                       @Nonnull final ReadContext ctx) throws ReadFailedException {
  79         final InterfaceKey key = id.firstKeyOf(Interface.class);
  80         // Relying here that parent InterfaceCustomizer was invoked first (PREORDER)
  81         // to fill in the context with initial ifc mapping
  82         final int index = interfaceContext.getIndex(key.getName(), ctx.getMappingContext());
  83         if (!InterfaceUtils.isInterfaceOfType(ctx.getModificationCache(), index, VxlanGpeTunnel.class)) {
  84             return;
  85         }
  86
  87         LOG.debug("Reading attributes for VxlanGpe tunnel: {}", key.getName());
  88         // Dump just a single
  89         final VxlanGpeTunnelDump request = new VxlanGpeTunnelDump();
  90         request.swIfIndex = index;
  91
  92         final CompletionStage<VxlanGpeTunnelDetailsReplyDump> swInterfaceVxlanGpeDetailsReplyDumpCompletionStage =
  93             getFutureJVpp().vxlanGpeTunnelDump(request);
  94         final VxlanGpeTunnelDetailsReplyDump reply =
  95             TranslateUtils.getReply(swInterfaceVxlanGpeDetailsReplyDumpCompletionStage.toCompletableFuture());
  96
  97         // VPP keeps VxlanGpe tunnel interfaces even after they were deleted (optimization)
  98         // However there are no longer any VxlanGpe tunnel specific fields assigned to it and this call
  99         // returns nothing
 100         if (reply == null || reply.vxlanGpeTunnelDetails == null || reply.vxlanGpeTunnelDetails.isEmpty()) {
 101             LOG.debug(
 102                 "VxlanGpe tunnel {}, id {} has no attributes assigned in VPP. Probably is a leftover interface placeholder" +
 103                     "after delete", key.getName(), index);
 104             return;
 105         }
 106
 107         checkState(reply.vxlanGpeTunnelDetails.size() == 1,
 108             "Unexpected number of returned VxlanGpe tunnels: {} for tunnel: {}", reply.vxlanGpeTunnelDetails, key.getName());
 109         LOG.trace("VxlanGpe tunnel: {} attributes returned from VPP: {}", key.getName(), reply);
 110
 111         final VxlanGpeTunnelDetails swInterfaceVxlanGpeDetails = reply.vxlanGpeTunnelDetails.get(0);
 112         if (swInterfaceVxlanGpeDetails.isIpv6 == 1) {
 113             final Ipv6Address remote6 =
 114                 new Ipv6Address(parseAddress(swInterfaceVxlanGpeDetails.remote).getHostAddress());
 115             builder.setRemote(new IpAddress(remote6));
 116             final Ipv6Address local6 =
 117                 new Ipv6Address(parseAddress(swInterfaceVxlanGpeDetails.local).getHostAddress());
 118             builder.setLocal(new IpAddress(local6));
 119         } else {
 120             final byte[] dstBytes = Arrays.copyOfRange(swInterfaceVxlanGpeDetails.remote, 0, 4);
 121             final Ipv4Address remote4 = new Ipv4Address(parseAddress(dstBytes).getHostAddress());
 122             builder.setRemote(new IpAddress(remote4));
 123             final byte[] srcBytes = Arrays.copyOfRange(swInterfaceVxlanGpeDetails.local, 0, 4);
 124             final Ipv4Address local4 = new Ipv4Address(parseAddress(srcBytes).getHostAddress());
 125             builder.setLocal(new IpAddress(local4));
 126         }
 127         builder.setVni(new VxlanGpeVni((long) swInterfaceVxlanGpeDetails.vni));
 128         builder.setEncapVrfId((long) swInterfaceVxlanGpeDetails.encapVrfId);
 129         builder.setDecapVrfId((long) swInterfaceVxlanGpeDetails.decapVrfId);
 130         LOG.debug("VxlanGpe tunnel: {}, id: {} attributes read as: {}", key.getName(), index, builder);
 131     }
 132
 133     @Nonnull
 134     private static InetAddress parseAddress(@Nonnull final byte[] addr) {
 135         try {
 136             return InetAddress.getByAddress(addr);
 137         } catch (UnknownHostException e) {
 138             throw new IllegalArgumentException("Cannot create InetAddress from " + Arrays.toString(addr), e);
 139         }
 140     }
 141 }