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
  83         if (!this.bgpConditionsRegistry
  84                 .matchExportConditions(entryInfo, routeEntryExportParameters, attributes, conditions)) {
  85             return false;
  86         }
  87
  88         final Map<Class<? extends Augmentation<?>>, Augmentation<?>> conditionsAug = BindingReflections
  89                 .getAugmentations(conditions);
  90
  91         if (conditionsAug != null) {
  92             for (final Map.Entry<Class<? extends Augmentation<?>>, Augmentation<?>> entry : conditionsAug.entrySet()) {
  93                 final ConditionsAugPolicy handler = this.conditionsRegistry.get(entry.getKey());
  94                 if (handler == null) {
  95                     continue;
  96                 }
  97                 if (!handler.matchExportCondition(entryInfo, routeEntryExportParameters,
  98                         handler.getConditionParameter(attributes), entry.getValue())) {
  99                     return false;
 100                 }
 101             }
 102         }
 103
 104         return true;
 105     }
 106
 107     @SuppressWarnings("unchecked")
 108     boolean matchImportConditions(
 109             final RouteEntryBaseAttributes entryInfo,
 110             final BGPRouteEntryImportParameters routeEntryImportParameters,
 111             final Attributes attributes,
 112             final Conditions conditions) {
 113         /*if (!this.genericConditionHandler
 114                 .matchImportCondition(routeEntryImportParameters, conditions)) {
 115             return false;
 116         }*/
 117
 118         if (!this.bgpConditionsRegistry
 119                 .matchImportConditions(entryInfo, routeEntryImportParameters, attributes, conditions)) {
 120             return false;
 121         }
 122
 123         final Map<Class<? extends Augmentation<?>>, Augmentation<?>> conditionsAug = BindingReflections
 124                 .getAugmentations(conditions);
 125
 126         if (conditionsAug != null && attributes != null) {
 127             for (final Map.Entry<Class<? extends Augmentation<?>>, Augmentation<?>> entry : conditionsAug.entrySet()) {
 128                 final ConditionsAugPolicy handler = this.conditionsRegistry.get(entry.getKey());
 129                 if (handler != null) {
 130                     final Augmentation<Conditions> conditionConfig = (Augmentation<Conditions>) entry.getValue();
 131                     if (!handler.matchImportCondition(entryInfo, routeEntryImportParameters,
 132                             handler.getConditionParameter(attributes), conditionConfig)) {
 133                         return false;
 134                     }
 135                 }
 136             }
 137         }
 138         return true;
 139     }
 140 }