bgp/openconfig-rp-spi/src/main/java/org/opendaylight/protocol/bgp/openconfig/routing/policy/spi/registry/ConditionsRegistryImpl.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.spi.registry;
  10
  11 import com.google.common.base.Preconditions;
  12 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
  13 import java.util.HashMap;
  14 import java.util.Map;
  15 import javax.annotation.concurrent.GuardedBy;
  16 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  17 import org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.RouteEntryBaseAttributes;
  18 import org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.policy.condition.BgpConditionsAugmentationPolicy;
  19 import org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.policy.condition.BgpConditionsPolicy;
  20 import org.opendaylight.protocol.bgp.openconfig.routing.policy.spi.policy.condition.ConditionsAugPolicy;
  21 import org.opendaylight.protocol.bgp.rib.spi.policy.BGPRouteEntryExportParameters;
  22 import org.opendaylight.protocol.bgp.rib.spi.policy.BGPRouteEntryImportParameters;
  23 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.policy.rev151009.BgpMatchConditions;
  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.routing.policy.rev151009.routing.policy.top.routing.policy.policy.definitions.policy.definition.statements.statement.Conditions;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev171207.path.attributes.Attributes;
  27 import org.opendaylight.yangtools.concepts.AbstractRegistration;
  28 import org.opendaylight.yangtools.yang.binding.Augmentation;
  29 import org.opendaylight.yangtools.yang.binding.ChildOf;
  30 import org.opendaylight.yangtools.yang.binding.util.BindingReflections;
  31
  32 @SuppressFBWarnings("NM_CONFUSING")
  33 final class ConditionsRegistryImpl {
  34     @GuardedBy("this")
  35     private final Map<Class<? extends Augmentation<Conditions>>, ConditionsAugPolicy> conditionsRegistry
  36             = new HashMap<>();
  37     //TODO Implement match prefix
  38     //private final GenericConditionPolicyHandler genericConditionHandler;
  39     private BgpConditionsRegistry bgpConditionsRegistry = new BgpConditionsRegistry();
  40
  41     ConditionsRegistryImpl(final DataBroker databroker) {
  42     //    this.genericConditionHandler = new GenericConditionPolicyHandler(databroker);
  43     }
  44
  45     AbstractRegistration registerConditionPolicy(final Class<? extends Augmentation<Conditions>> conditionPolicyClass,
  46             final ConditionsAugPolicy conditionPolicy) {
  47         synchronized (this.conditionsRegistry) {
  48             final ConditionsAugPolicy prev = this.conditionsRegistry.putIfAbsent(conditionPolicyClass, conditionPolicy);
  49             Preconditions.checkState(prev == null, "Condition Policy %s already registered %s",
  50                     conditionPolicyClass, prev);
  51             return new AbstractRegistration() {
  52                 @Override
  53                 protected void removeRegistration() {
  54                     synchronized (ConditionsRegistryImpl.this.conditionsRegistry) {
  55                         ConditionsRegistryImpl.this.conditionsRegistry.remove(conditionPolicyClass);
  56                     }
  57                 }
  58             };
  59         }
  60     }
  61
  62     public AbstractRegistration registerBgpConditionsAugmentationPolicy(
  63             final Class<? extends Augmentation<BgpConditions>> conditionPolicyClass,
  64             final BgpConditionsAugmentationPolicy conditionPolicy) {
  65         return this.bgpConditionsRegistry
  66                 .registerBgpConditionsAugmentationPolicy(conditionPolicyClass, conditionPolicy);
  67     }
  68
  69     public <T extends ChildOf<BgpMatchConditions>, N> AbstractRegistration registerBgpConditionsPolicy(
  70             final Class<T> conditionPolicyClass,
  71             final BgpConditionsPolicy<T, N> conditionPolicy) {
  72         return this.bgpConditionsRegistry
  73                 .registerBgpConditionsPolicy(conditionPolicyClass, conditionPolicy);
  74     }
  75
  76     @SuppressWarnings("unchecked")
  77     boolean matchExportConditions(
  78             final RouteEntryBaseAttributes entryInfo,
  79             final BGPRouteEntryExportParameters routeEntryExportParameters,
  80             final Attributes attributes,
  81             final Conditions conditions) {
  82       /*  if (!this.genericConditionHandler
  83                 .matchExportCondition(routeEntryExportParameters, conditions)) {
  84             return false;
  85         }*/
  86
  87         if (!this.bgpConditionsRegistry
  88                 .matchExportConditions(entryInfo, routeEntryExportParameters, attributes, conditions)) {
  89             return false;
  90         }
  91
  92         final Map<Class<? extends Augmentation<?>>, Augmentation<?>> conditionsAug = BindingReflections
  93                 .getAugmentations(conditions);
  94
  95         if (conditionsAug != null) {
  96             for (final Map.Entry<Class<? extends Augmentation<?>>, Augmentation<?>> entry : conditionsAug.entrySet()) {
  97                 final ConditionsAugPolicy handler = this.conditionsRegistry.get(entry.getKey());
  98                 if (handler == null) {
  99                     continue;
 100                 }
 101                 if (!handler.matchExportCondition(entryInfo, routeEntryExportParameters,
 102                         handler.getConditionParameter(attributes), entry.getValue())) {
 103                     return false;
 104                 }
 105             }
 106         }
 107
 108         return true;
 109     }
 110
 111     @SuppressWarnings("unchecked")
 112     boolean matchImportConditions(
 113             final RouteEntryBaseAttributes entryInfo,
 114             final BGPRouteEntryImportParameters routeEntryImportParameters,
 115             final Attributes attributes,
 116             final Conditions conditions) {
 117         /*if (!this.genericConditionHandler
 118                 .matchImportCondition(routeEntryImportParameters, conditions)) {
 119             return false;
 120         }*/
 121
 122         if (!this.bgpConditionsRegistry
 123                 .matchImportConditions(entryInfo, routeEntryImportParameters, attributes, conditions)) {
 124             return false;
 125         }
 126
 127         final Map<Class<? extends Augmentation<?>>, Augmentation<?>> conditionsAug = BindingReflections
 128                 .getAugmentations(conditions);
 129
 130         if (conditionsAug != null && attributes != null) {
 131             for (final Map.Entry<Class<? extends Augmentation<?>>, Augmentation<?>> entry : conditionsAug.entrySet()) {
 132                 final ConditionsAugPolicy handler = this.conditionsRegistry.get(entry.getKey());
 133                 if (handler != null) {
 134                     final Augmentation<Conditions> conditionConfig = (Augmentation<Conditions>) entry.getValue();
 135                     if (!handler.matchImportCondition(entryInfo, routeEntryImportParameters,
 136                             handler.getConditionParameter(attributes), conditionConfig)) {
 137                         return false;
 138                     }
 139                 }
 140             }
 141         }
 142         return true;
 143     }
 144 }