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 import static io.fd.honeycomb.v3po.translate.v3po.interfacesstate.InterfaceUtils.isInterfaceOfType;
  21
  22 import io.fd.honeycomb.v3po.translate.read.ReadContext;
  23 import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
  24 import io.fd.honeycomb.v3po.translate.spi.read.ChildReaderCustomizer;
  25 import io.fd.honeycomb.v3po.translate.v3po.util.FutureJVppCustomizer;
  26 import io.fd.honeycomb.v3po.translate.v3po.util.NamingContext;
  27 import io.fd.honeycomb.v3po.translate.v3po.util.TranslateUtils;
  28 import java.net.InetAddress;
  29 import java.net.UnknownHostException;
  30 import java.util.Arrays;
  31 import java.util.concurrent.CompletionStage;
  32 import javax.annotation.Nonnull;
  33 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  34 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Address;
  35 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv6Address;
  36 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface;
  37 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.InterfaceKey;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VppInterfaceStateAugmentationBuilder;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VxlanGpeNextProtocol;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VxlanGpeTunnel;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VxlanGpeVni;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.VxlanGpe;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.VxlanGpeBuilder;
  44 import org.opendaylight.yangtools.concepts.Builder;
  45 import org.opendaylight.yangtools.yang.binding.DataObject;
  46 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  47 import org.openvpp.jvpp.VppBaseCallException;
  48 import org.openvpp.jvpp.dto.VxlanGpeTunnelDetails;
  49 import org.openvpp.jvpp.dto.VxlanGpeTunnelDetailsReplyDump;
  50 import org.openvpp.jvpp.dto.VxlanGpeTunnelDump;
  51 import org.openvpp.jvpp.future.FutureJVpp;
  52 import org.slf4j.Logger;
  53 import org.slf4j.LoggerFactory;
  54
  55 public class VxlanGpeCustomizer extends FutureJVppCustomizer
  56         implements ChildReaderCustomizer<VxlanGpe, VxlanGpeBuilder> {
  57
  58     private static final Logger LOG = LoggerFactory.getLogger(VxlanGpeCustomizer.class);
  59     private NamingContext interfaceContext;
  60
  61     public VxlanGpeCustomizer(@Nonnull final FutureJVpp jvpp, @Nonnull final NamingContext interfaceContext) {
  62         super(jvpp);
  63         this.interfaceContext = interfaceContext;
  64     }
  65
  66     @Override
  67     public void merge(@Nonnull Builder<? extends DataObject> parentBuilder,
  68                       @Nonnull VxlanGpe readValue) {
  69         ((VppInterfaceStateAugmentationBuilder) parentBuilder).setVxlanGpe(readValue);
  70     }
  71
  72     @Nonnull
  73     @Override
  74     public VxlanGpeBuilder getBuilder(@Nonnull InstanceIdentifier<VxlanGpe> id) {
  75         return new VxlanGpeBuilder();
  76     }
  77
  78     @Override
  79     public void readCurrentAttributes(@Nonnull final InstanceIdentifier<VxlanGpe> id,
  80                                       @Nonnull final VxlanGpeBuilder builder,
  81                                       @Nonnull final ReadContext ctx) throws ReadFailedException {
  82         try {
  83             final InterfaceKey key = id.firstKeyOf(Interface.class);
  84             final int index = interfaceContext.getIndex(key.getName(), ctx.getMappingContext());
  85             if (!isInterfaceOfType(getFutureJVpp(), ctx.getModificationCache(), id, index, VxlanGpeTunnel.class)) {
  86                 return;
  87             }
  88
  89             LOG.debug("Reading attributes for VxlanGpe tunnel: {}", key.getName());
  90             // Dump just a single
  91             final VxlanGpeTunnelDump request = new VxlanGpeTunnelDump();
  92             request.swIfIndex = index;
  93
  94             final CompletionStage<VxlanGpeTunnelDetailsReplyDump> swInterfaceVxlanGpeDetailsReplyDumpCompletionStage =
  95                 getFutureJVpp().vxlanGpeTunnelDump(request);
  96             final VxlanGpeTunnelDetailsReplyDump reply =
  97                 TranslateUtils.getReplyForRead(swInterfaceVxlanGpeDetailsReplyDumpCompletionStage.toCompletableFuture(), id);
  98
  99             // VPP keeps VxlanGpe tunnel interfaces even after they were deleted (optimization)
 100             // However there are no longer any VxlanGpe tunnel specific fields assigned to it and this call
 101             // returns nothing
 102             if (reply == null || reply.vxlanGpeTunnelDetails == null || reply.vxlanGpeTunnelDetails.isEmpty()) {
 103                 LOG.debug(
 104                     "VxlanGpe tunnel {}, id {} has no attributes assigned in VPP. Probably is a leftover interface placeholder" +
 105                         "after delete", key.getName(), index);
 106                 return;
 107             }
 108
 109             checkState(reply.vxlanGpeTunnelDetails.size() == 1,
 110                 "Unexpected number of returned VxlanGpe tunnels: {} for tunnel: {}", reply.vxlanGpeTunnelDetails, key.getName());
 111             LOG.trace("VxlanGpe tunnel: {} attributes returned from VPP: {}", key.getName(), reply);
 112
 113             final VxlanGpeTunnelDetails swInterfaceVxlanGpeDetails = reply.vxlanGpeTunnelDetails.get(0);
 114             if (swInterfaceVxlanGpeDetails.isIpv6 == 1) {
 115                 final Ipv6Address remote6 =
 116                     new Ipv6Address(parseAddress(swInterfaceVxlanGpeDetails.remote).getHostAddress());
 117                 builder.setRemote(new IpAddress(remote6));
 118                 final Ipv6Address local6 =
 119                     new Ipv6Address(parseAddress(swInterfaceVxlanGpeDetails.local).getHostAddress());
 120                 builder.setLocal(new IpAddress(local6));
 121             } else {
 122                 final byte[] dstBytes = Arrays.copyOfRange(swInterfaceVxlanGpeDetails.remote, 0, 4);
 123                 final Ipv4Address remote4 = new Ipv4Address(parseAddress(dstBytes).getHostAddress());
 124                 builder.setRemote(new IpAddress(remote4));
 125                 final byte[] srcBytes = Arrays.copyOfRange(swInterfaceVxlanGpeDetails.local, 0, 4);
 126                 final Ipv4Address local4 = new Ipv4Address(parseAddress(srcBytes).getHostAddress());
 127                 builder.setLocal(new IpAddress(local4));
 128             }
 129             builder.setVni(new VxlanGpeVni((long) swInterfaceVxlanGpeDetails.vni));
 130         builder.setNextProtocol(VxlanGpeNextProtocol.forValue(swInterfaceVxlanGpeDetails.protocol));
 131             builder.setEncapVrfId((long) swInterfaceVxlanGpeDetails.encapVrfId);
 132             builder.setDecapVrfId((long) swInterfaceVxlanGpeDetails.decapVrfId);
 133             LOG.debug("VxlanGpe tunnel: {}, id: {} attributes read as: {}", key.getName(), index, builder);
 134         } catch (VppBaseCallException e) {
 135             LOG.warn("Failed to readCurrentAttributes for: {}", id);
 136             throw new ReadFailedException( id, e );
 137         }
 138     }
 139
 140     @Nonnull
 141     private static InetAddress parseAddress(@Nonnull final byte[] addr) {
 142         try {
 143             return InetAddress.getByAddress(addr);
 144         } catch (UnknownHostException e) {
 145             throw new IllegalArgumentException("Cannot create InetAddress from " + Arrays.toString(addr), e);
 146         }
 147     }
 148 }