bgp/openconfig-rp-spi/src/main/java/org/opendaylight/protocol/bgp/openconfig/routing/policy/spi/registry/BgpConditionsRegistry.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 package org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.registry;
   9
  10 import com.google.common.base.Preconditions;
  11 import java.util.HashMap;
  12 import java.util.Map;
  13 import org.checkerframework.checker.lock.qual.GuardedBy;
  14 import org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.RouteEntryBaseAttributes;
  15 import org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.policy.condition.BgpConditionsAugmentationPolicy;
  16 import org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.policy.condition.BgpConditionsPolicy;
  17 import org.opendaylight.protocol.bgp.rib.spi.policy.BGPRouteEntryExportParameters;
  18 import org.opendaylight.protocol.bgp.rib.spi.policy.BGPRouteEntryImportParameters;
  19 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.BgpMatchConditions;
  20 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.Conditions1;
  21 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.bgp.match.conditions.MatchAsPathSet;
  22 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.bgp.match.conditions.MatchCommunitySet;
  23 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.bgp.match.conditions.MatchExtCommunitySet;
  24 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.routing.policy.policy.definitions.policy.definition.statements.statement.conditions.BgpConditions;
  25 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.types.rev151009.AfiSafiType;
  26 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.routing.policy.rev151009.routing.policy.top.routing.policy.policy.definitions.policy.definition.statements.statement.Conditions;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.path.attributes.Attributes;
  28 import org.opendaylight.yangtools.concepts.AbstractRegistration;
  29 import org.opendaylight.yangtools.yang.binding.Augmentation;
  30 import org.opendaylight.yangtools.yang.binding.ChildOf;
  31
  32 final class BgpConditionsRegistry {
  33     @GuardedBy("this")
  34     private final Map<Class<? extends Augmentation<BgpConditions>>,
  35             BgpConditionsAugmentationPolicy> bgpConditionsAugRegistry = new HashMap<>();
  36     @GuardedBy("this")
  37     private final Map<Class<? extends ChildOf<BgpMatchConditions>>,
  38             BgpConditionsPolicy> bgpConditionsRegistry = new HashMap<>();
  39
  40     AbstractRegistration registerBgpConditionsAugmentationPolicy(
  41             final Class<? extends Augmentation<BgpConditions>> conditionPolicyClass,
  42             final BgpConditionsAugmentationPolicy conditionPolicy) {
  43         synchronized (bgpConditionsAugRegistry) {
  44             final BgpConditionsAugmentationPolicy prev
  45                     = bgpConditionsAugRegistry.putIfAbsent(conditionPolicyClass, conditionPolicy);
  46             Preconditions.checkState(prev == null, "Condition Policy %s already registered %s",
  47                     conditionPolicyClass, prev);
  48             return new AbstractRegistration() {
  49                 @Override
  50                 protected void removeRegistration() {
  51                     synchronized (bgpConditionsAugRegistry) {
  52                         bgpConditionsAugRegistry.remove(conditionPolicyClass);
  53                     }
  54                 }
  55             };
  56         }
  57     }
  58
  59     <T extends ChildOf<BgpMatchConditions>, N> AbstractRegistration registerBgpConditionsPolicy(
  60             final Class<T> conditionPolicyClass,
  61             final BgpConditionsPolicy<T, N> conditionPolicy) {
  62         synchronized (bgpConditionsRegistry) {
  63             final BgpConditionsPolicy prev
  64                     = bgpConditionsRegistry.putIfAbsent(conditionPolicyClass, conditionPolicy);
  65             Preconditions.checkState(prev == null, "Condition Policy %s already registered %s",
  66                     conditionPolicyClass, prev);
  67             return new AbstractRegistration() {
  68                 @Override
  69                 protected void removeRegistration() {
  70                     synchronized (bgpConditionsRegistry) {
  71                         bgpConditionsRegistry.remove(conditionPolicyClass);
  72                     }
  73                 }
  74             };
  75         }
  76     }
  77
  78     @SuppressWarnings("unchecked")
  79     boolean matchExportConditions(
  80             final AfiSafiType afiSafi,
  81             final RouteEntryBaseAttributes entryInfo,
  82             final BGPRouteEntryExportParameters routeEntryExportParameters,
  83             final Attributes attributes,
  84             final Conditions conditions) {
  85         final Conditions1 bgpConditionsAug = conditions.augmentation(Conditions1.class);
  86         if (bgpConditionsAug != null) {
  87
  88             final BgpConditions bgpConditions = bgpConditionsAug.getBgpConditions();
  89             if (!matchExportCondition(afiSafi, entryInfo, routeEntryExportParameters, attributes,
  90                     bgpConditions)) {
  91                 return false;
  92             }
  93             for (final Augmentation<BgpConditions> condition : bgpConditions.augmentations().values()) {
  94                 final BgpConditionsAugmentationPolicy handler =
  95                     bgpConditionsAugRegistry.get(condition.implementedInterface());
  96                 if (handler == null) {
  97                     continue;
  98                 }
  99                 if (!handler.matchExportCondition(afiSafi, entryInfo, routeEntryExportParameters,
 100                         handler.getConditionParameter(attributes), condition)) {
 101                     return false;
 102                 }
 103             }
 104         }
 105         return true;
 106     }
 107
 108
 109     boolean matchImportConditions(
 110             final AfiSafiType afiSafi,
 111             final RouteEntryBaseAttributes entryInfo,
 112             final BGPRouteEntryImportParameters routeEntryImportParameters,
 113             final Attributes attributes,
 114             final Conditions conditions) {
 115
 116         final Conditions1 bgpConditionsAug = conditions.augmentation(Conditions1.class);
 117         if (bgpConditionsAug != null) {
 118             final BgpConditions bgpConditions = bgpConditionsAug.getBgpConditions();
 119             synchronized (this) {
 120                 if (!matchImportCondition(afiSafi, entryInfo, routeEntryImportParameters, attributes,
 121                         bgpConditions)) {
 122                     return false;
 123                 }
 124             }
 125             for (final Augmentation<BgpConditions> condition : bgpConditions.augmentations().values()) {
 126                 final BgpConditionsAugmentationPolicy handler =
 127                     bgpConditionsAugRegistry.get(condition.implementedInterface());
 128                 if (handler == null) {
 129                     continue;
 130                 }
 131                 if (!handler.matchImportCondition(afiSafi, entryInfo, routeEntryImportParameters,
 132                         handler.getConditionParameter(attributes), condition)) {
 133                     return false;
 134                 }
 135             }
 136         }
 137         return true;
 138     }
 139
 140     @SuppressWarnings("unchecked")
 141     private boolean matchImportCondition(
 142             final AfiSafiType afiSafi,
 143             final RouteEntryBaseAttributes routeEntryInfo,
 144             final BGPRouteEntryImportParameters routeEntryImportParameters,
 145             final Attributes attributes,
 146             final BgpConditions conditions) {
 147
 148         if (!BgpAttributeConditionsUtil.matchConditions(afiSafi, attributes, conditions)) {
 149             return false;
 150         }
 151
 152         final MatchCommunitySet matchCond = conditions.getMatchCommunitySet();
 153         if (matchCond != null) {
 154             final BgpConditionsPolicy handler = bgpConditionsRegistry.get(MatchCommunitySet.class);
 155             if (!handler.matchImportCondition(afiSafi, routeEntryInfo, routeEntryImportParameters,
 156                     handler.getConditionParameter(attributes), matchCond)) {
 157                 return false;
 158             }
 159         }
 160
 161         final MatchAsPathSet matchAsPathSet = conditions.getMatchAsPathSet();
 162         if (matchCond != null) {
 163             final BgpConditionsPolicy handler = bgpConditionsRegistry.get(MatchAsPathSet.class);
 164             if (!handler.matchImportCondition(afiSafi, routeEntryInfo, routeEntryImportParameters,
 165                     handler.getConditionParameter(attributes), matchAsPathSet)) {
 166                 return false;
 167             }
 168         }
 169
 170         final MatchExtCommunitySet matchExtCommSet = conditions.getMatchExtCommunitySet();
 171         if (matchExtCommSet != null) {
 172             final BgpConditionsPolicy handler = bgpConditionsRegistry.get(MatchAsPathSet.class);
 173             if (!handler.matchImportCondition(afiSafi, routeEntryInfo, routeEntryImportParameters,
 174                     handler.getConditionParameter(attributes), matchExtCommSet)) {
 175                 return false;
 176             }
 177         }
 178
 179         return true;
 180     }
 181
 182     @SuppressWarnings("unchecked")
 183     private boolean matchExportCondition(
 184             final AfiSafiType afiSafi,
 185             final RouteEntryBaseAttributes routeEntryInfo,
 186             final BGPRouteEntryExportParameters routeEntryExportParameters,
 187             final Attributes attributes,
 188             final BgpConditions conditions) {
 189         if (!BgpAttributeConditionsUtil.matchConditions(afiSafi, attributes, conditions)) {
 190             return false;
 191         }
 192
 193         final MatchCommunitySet matchCond = conditions.getMatchCommunitySet();
 194         if (matchCond != null) {
 195             final BgpConditionsPolicy handler = bgpConditionsRegistry.get(MatchCommunitySet.class);
 196             if (!handler.matchExportCondition(afiSafi, routeEntryInfo, routeEntryExportParameters,
 197                     handler.getConditionParameter(attributes), matchCond)) {
 198                 return false;
 199             }
 200         }
 201
 202         final MatchAsPathSet matchAsPathSet = conditions.getMatchAsPathSet();
 203         if (matchAsPathSet != null) {
 204             final BgpConditionsPolicy handler = bgpConditionsRegistry.get(MatchAsPathSet.class);
 205             if (!handler.matchExportCondition(afiSafi, routeEntryInfo, routeEntryExportParameters,
 206                     handler.getConditionParameter(attributes), matchAsPathSet)) {
 207                 return false;
 208             }
 209         }
 210
 211         final MatchExtCommunitySet matchExtCommSet = conditions.getMatchExtCommunitySet();
 212         if (matchExtCommSet != null) {
 213             final BgpConditionsPolicy handler = bgpConditionsRegistry.get(MatchExtCommunitySet.class);
 214             if (!handler.matchExportCondition(afiSafi, routeEntryInfo, routeEntryExportParameters,
 215                     handler.getConditionParameter(attributes), matchExtCommSet)) {
 216                 return false;
 217             }
 218         }
 219
 220         return true;
 221     }
 222 }