v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfacesstate/VhostUserCustomizer.java

   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.translate.v3po.interfacesstate;
  18
  19 import io.fd.honeycomb.translate.read.ReadContext;
  20 import io.fd.honeycomb.translate.read.ReadFailedException;
  21 import io.fd.honeycomb.translate.spi.read.ReaderCustomizer;
  22 import io.fd.honeycomb.translate.v3po.util.FutureJVppCustomizer;
  23 import io.fd.honeycomb.translate.v3po.util.JvppReplyConsumer;
  24 import io.fd.honeycomb.translate.v3po.util.NamingContext;
  25 import java.math.BigInteger;
  26 import java.util.Collections;
  27 import java.util.List;
  28 import java.util.Map;
  29 import java.util.concurrent.CompletionStage;
  30 import java.util.stream.Collectors;
  31 import javax.annotation.Nonnull;
  32 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface;
  33 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.InterfaceKey;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VhostUserRole;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VppInterfaceStateAugmentationBuilder;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.VhostUser;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.VhostUserBuilder;
  38 import org.opendaylight.yangtools.concepts.Builder;
  39 import org.opendaylight.yangtools.yang.binding.DataObject;
  40 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  41 import org.openvpp.jvpp.VppBaseCallException;
  42 import org.openvpp.jvpp.core.dto.SwInterfaceVhostUserDetails;
  43 import org.openvpp.jvpp.core.dto.SwInterfaceVhostUserDetailsReplyDump;
  44 import org.openvpp.jvpp.core.dto.SwInterfaceVhostUserDump;
  45 import org.openvpp.jvpp.core.future.FutureJVppCore;
  46 import org.slf4j.Logger;
  47 import org.slf4j.LoggerFactory;
  48
  49
  50 public class VhostUserCustomizer extends FutureJVppCustomizer
  51         implements ReaderCustomizer<VhostUser, VhostUserBuilder>, InterfaceDataTranslator, JvppReplyConsumer {
  52
  53     public static final String DUMPED_VHOST_USERS_CONTEXT_KEY =
  54             VhostUserCustomizer.class.getName() + "dumpedVhostUsersDuringGetAllIds";
  55     private static final Logger LOG = LoggerFactory.getLogger(VhostUserCustomizer.class);
  56     private NamingContext interfaceContext;
  57
  58     public VhostUserCustomizer(@Nonnull final FutureJVppCore 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, @Nonnull VhostUser readValue) {
  65         ((VppInterfaceStateAugmentationBuilder) parentBuilder).setVhostUser(readValue);
  66     }
  67
  68     @Nonnull
  69     @Override
  70     public VhostUserBuilder getBuilder(@Nonnull InstanceIdentifier<VhostUser> id) {
  71         return new VhostUserBuilder();
  72     }
  73
  74     @Override
  75     public void readCurrentAttributes(@Nonnull final InstanceIdentifier<VhostUser> id,
  76                                       @Nonnull final VhostUserBuilder builder,
  77                                       @Nonnull final ReadContext ctx) throws ReadFailedException {
  78         try {
  79             final InterfaceKey key = id.firstKeyOf(Interface.class);
  80             final int index = interfaceContext.getIndex(key.getName(), ctx.getMappingContext());
  81             if (!isInterfaceOfType(getFutureJVpp(), ctx.getModificationCache(), id, index,
  82                     org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VhostUser.class,
  83                     LOG)) {
  84                 return;
  85             }
  86
  87             LOG.debug("Reading attributes for vhpost user interface: {}", key.getName());
  88
  89             @SuppressWarnings("unchecked")
  90             Map<Integer, SwInterfaceVhostUserDetails> mappedVhostUsers =
  91                     (Map<Integer, SwInterfaceVhostUserDetails>) ctx.getModificationCache()
  92                             .get(DUMPED_VHOST_USERS_CONTEXT_KEY);
  93
  94             if (mappedVhostUsers == null) {
  95                 // Full VhostUser dump has to be performed here, no filter or anything is here to help so at least we cache it
  96                 final SwInterfaceVhostUserDump request = new SwInterfaceVhostUserDump();
  97                 final CompletionStage<SwInterfaceVhostUserDetailsReplyDump>
  98                         swInterfaceVhostUserDetailsReplyDumpCompletionStage =
  99                         getFutureJVpp().swInterfaceVhostUserDump(request);
 100                 final SwInterfaceVhostUserDetailsReplyDump reply =
 101                         getReplyForRead(swInterfaceVhostUserDetailsReplyDumpCompletionStage.toCompletableFuture(), id);
 102
 103                 if (null == reply || null == reply.swInterfaceVhostUserDetails) {
 104                     mappedVhostUsers = Collections.emptyMap();
 105                 } else {
 106                     final List<SwInterfaceVhostUserDetails> swInterfaceVhostUserDetails =
 107                             reply.swInterfaceVhostUserDetails;
 108                     // Cache interfaces dump in per-tx context to later be used in readCurrentAttributes
 109                     mappedVhostUsers = swInterfaceVhostUserDetails.stream()
 110                             .collect(Collectors.toMap(t -> t.swIfIndex, swInterfaceDetails -> swInterfaceDetails));
 111                 }
 112
 113                 ctx.getModificationCache().put(DUMPED_VHOST_USERS_CONTEXT_KEY, mappedVhostUsers);
 114             }
 115
 116             // Relying here that parent InterfaceCustomizer was invoked first to fill in the context with initial ifc mapping
 117             final SwInterfaceVhostUserDetails swInterfaceVhostUserDetails = mappedVhostUsers.get(index);
 118             LOG.trace("Vhost user interface: {} attributes returned from VPP: {}", key.getName(),
 119                     swInterfaceVhostUserDetails);
 120
 121             builder.setRole(swInterfaceVhostUserDetails.isServer == 1
 122                     ? VhostUserRole.Server
 123                     : VhostUserRole.Client);
 124             builder.setFeatures(BigInteger.valueOf(swInterfaceVhostUserDetails.features));
 125             builder.setNumMemoryRegions((long) swInterfaceVhostUserDetails.numRegions);
 126             builder.setSocket(toString(swInterfaceVhostUserDetails.sockFilename));
 127             builder.setVirtioNetHdrSize((long) swInterfaceVhostUserDetails.virtioNetHdrSz);
 128             builder.setConnectError(Integer.toString(swInterfaceVhostUserDetails.sockErrno));
 129
 130             LOG.debug("Vhost user interface: {}, id: {} attributes read as: {}", key.getName(), index, builder);
 131         } catch (VppBaseCallException e) {
 132             LOG.warn("Failed to readCurrentAttributes for: {}", id, e);
 133             throw new ReadFailedException(id, e);
 134         }
 135     }
 136 }