bgp/openconfig-rp-statement/src/main/java/org/opendaylight/protocol/bgp/openconfig/routing/policy/statement/actions/NonTransitiveAttributesFilterHandler.java

   1 /*
   2  * Copyright (c) 2018 AT&T Intellectual Property. 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
   9 package org.opendaylight.protocol.bgp.openconfig.routing.policy.statement.actions;
  10
  11 import java.util.List;
  12 import java.util.stream.Collectors;
  13 import org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.RouteEntryBaseAttributes;
  14 import org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.policy.action.BgpActionAugPolicy;
  15 import org.opendaylight.protocol.bgp.rib.spi.policy.BGPRouteEntryExportParameters;
  16 import org.opendaylight.protocol.bgp.rib.spi.policy.BGPRouteEntryImportParameters;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.path.attributes.Attributes;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.path.attributes.AttributesBuilder;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.path.attributes.attributes.ExtendedCommunities;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.path.attributes.attributes.UnrecognizedAttributes;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev200120.ExtendedCommunity;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.odl.bgp._default.policy.rev200120.NonTransitiveAttributesFilter;
  23
  24 /**
  25  * Removes non transitive attributes.
  26  */
  27 public final class NonTransitiveAttributesFilterHandler implements BgpActionAugPolicy<NonTransitiveAttributesFilter> {
  28     private static final NonTransitiveAttributesFilterHandler INSTANCE = new NonTransitiveAttributesFilterHandler();
  29
  30     private NonTransitiveAttributesFilterHandler() {
  31
  32     }
  33
  34     public static NonTransitiveAttributesFilterHandler getInstance() {
  35         return INSTANCE;
  36     }
  37
  38     @Override
  39     public Attributes applyImportAction(
  40             final RouteEntryBaseAttributes routeEntryInfo,
  41             final BGPRouteEntryImportParameters routeEntryImportParameters,
  42             final Attributes attributes,
  43             final NonTransitiveAttributesFilter bgpActions) {
  44         return filterAttributes(attributes);
  45     }
  46
  47     private static Attributes filterAttributes(final Attributes attributes) {
  48         final AttributesBuilder builder = new AttributesBuilder()
  49                 .setCNextHop(attributes.getCNextHop())
  50                 .setOrigin(attributes.getOrigin())
  51                 .setAsPath(attributes.getAsPath())
  52                 .setCommunities(attributes.getCommunities());
  53
  54         final List<UnrecognizedAttributes> oldAtt = attributes.getUnrecognizedAttributes();
  55         if (oldAtt != null) {
  56             builder.setUnrecognizedAttributes(attributes.getUnrecognizedAttributes().stream()
  57                     .filter(UnrecognizedAttributes::isTransitive)
  58                     .collect(Collectors.toList()));
  59         }
  60         final List<ExtendedCommunities> oldExt = attributes.getExtendedCommunities();
  61         if (oldExt != null) {
  62             builder.setExtendedCommunities(oldExt.stream()
  63                     .filter(ExtendedCommunity::isTransitive)
  64                     .collect(Collectors.toList()));
  65         }
  66         return builder.build();
  67     }
  68
  69     @Override
  70     public Attributes applyExportAction(final RouteEntryBaseAttributes routeEntryInfo,
  71             final BGPRouteEntryExportParameters routeEntryExportParameters,
  72             final Attributes attributes,
  73             final NonTransitiveAttributesFilter bgpActions) {
  74         return filterAttributes(attributes);
  75     }
  76 }