bgp/openconfig-state/src/main/java/org/opendaylight/protocol/bgp/state/PeerGroupUtil.java

   1 /*
   2  * Copyright (c) 2016 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.protocol.bgp.state;
   9
  10 import java.util.List;
  11 import java.util.Map;
  12 import java.util.stream.Collectors;
  13 import org.eclipse.jdt.annotation.NonNull;
  14 import org.eclipse.jdt.annotation.Nullable;
  15 import org.opendaylight.protocol.bgp.rib.spi.state.BGPPeerState;
  16 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.peer.group.PeerGroup;
  17 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.peer.group.PeerGroupBuilder;
  18 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.top.bgp.PeerGroups;
  19 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.top.bgp.PeerGroupsBuilder;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.PeerGroupStateAugmentation;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.openconfig.extensions.rev180329.PeerGroupStateAugmentationBuilder;
  22
  23 /**
  24  * Util for create OpenConfig Peer group with corresponding openConfig state.
  25  */
  26 public final class PeerGroupUtil {
  27     private PeerGroupUtil() {
  28         throw new UnsupportedOperationException();
  29     }
  30
  31     /**
  32      * Build Openconfig PeerGroups containing Peer group stats from a list of BGPPeerGroupState.
  33      *
  34      * @param bgpStateConsumer providing BGPPeerGroupState
  35      * @return PeerGroups containing Peer group stats
  36      */
  37
  38     public static @Nullable PeerGroups buildPeerGroups(final @NonNull List<BGPPeerState> bgpStateConsumer) {
  39         final Map<String, List<BGPPeerState>> peerGroups = bgpStateConsumer.stream()
  40                 .filter(state -> state.getGroupId() != null)
  41                 .collect(Collectors.groupingBy(BGPPeerState::getGroupId));
  42         if (peerGroups.isEmpty()) {
  43             return null;
  44         }
  45
  46         final List<PeerGroup> peerGroupsList = peerGroups.entrySet().stream()
  47                 .map(entry -> buildPeerGroupState(entry.getKey(), entry.getValue()))
  48                 .collect(Collectors.toList());
  49         return new PeerGroupsBuilder().setPeerGroup(peerGroupsList).build();
  50     }
  51
  52     /**
  53      * Build Openconfig PeerGroup containing Peer group stats from BGPPeerGroupState.
  54      *
  55      * @param groupId Peer group Id
  56      * @param groups  providing state of the group
  57      * @return PeerGroups containing Peer group stats
  58      */
  59     public static @NonNull PeerGroup buildPeerGroupState(final @NonNull String groupId,
  60             final @NonNull List<BGPPeerState> groups) {
  61         final PeerGroupStateAugmentation groupState = new PeerGroupStateAugmentationBuilder()
  62                 .setTotalPrefixes(groups.stream().mapToLong(BGPPeerState::getTotalPrefixes).sum())
  63                 .setTotalPaths(groups.stream().mapToLong(BGPPeerState::getTotalPathsCount).sum())
  64                 .build();
  65
  66         return new PeerGroupBuilder()
  67                 .setPeerGroupName(groupId)
  68                 .setState(new org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbor.group
  69                         .StateBuilder().addAugmentation(PeerGroupStateAugmentation.class, groupState).build()).build();
  70     }
  71 }