renderers/vpp/src/main/java/org/opendaylight/groupbasedpolicy/renderer/vpp/policy/PolicyContext.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
   9 package org.opendaylight.groupbasedpolicy.renderer.vpp.policy;
  10
  11 import com.google.common.base.Preconditions;
  12 import com.google.common.collect.ImmutableMap;
  13 import com.google.common.collect.ImmutableSortedSet;
  14 import com.google.common.collect.ImmutableTable;
  15 import com.google.common.collect.ImmutableTable.Builder;
  16 import com.google.common.collect.Maps;
  17 import java.util.Collections;
  18 import java.util.List;
  19 import java.util.Map;
  20 import java.util.Objects;
  21 import java.util.Optional;
  22 import java.util.TreeSet;
  23 import java.util.function.Supplier;
  24 import java.util.stream.Collectors;
  25 import javax.annotation.Nonnull;
  26 import org.opendaylight.groupbasedpolicy.renderer.vpp.util.KeyFactory;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.endpoints.address.endpoints.AddressEndpointKey;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.TenantId;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.tenants.tenant.Policy;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.RendererPolicy;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.Configuration;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.endpoints.AddressEndpointWithLocation;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.endpoints.RendererEndpoint;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.endpoints.RendererEndpointKey;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.endpoints.renderer.endpoint.PeerEndpointKey;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererForwardingContext;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererForwardingContextKey;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererNetworkDomain;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererNetworkDomainKey;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.rule.groups.RuleGroup;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.rule.groups.RuleGroupKey;
  42
  43 public class PolicyContext {
  44
  45     private final RendererPolicy policy;
  46     private final ImmutableTable<RendererEndpointKey, PeerEndpointKey, ImmutableSortedSet<RendererResolvedPolicy>> policyTable;
  47     private final ImmutableMap<RuleGroupKey, ResolvedRuleGroup> ruleGroupByKey;
  48     private final ImmutableMap<AddressEndpointKey, AddressEndpointWithLocation> addrEpByKey;
  49     private final ImmutableTable<TenantId, RendererForwardingContextKey, RendererForwardingContext> forwardingCtxTable;
  50     private final ImmutableTable<TenantId, RendererNetworkDomainKey, RendererNetworkDomain> networkDomainTable;
  51
  52     public PolicyContext(@Nonnull RendererPolicy policy) {
  53         this.policy = Preconditions.checkNotNull(policy);
  54         Optional<Configuration> optConfig = resolveValidConfig(policy);
  55         if (optConfig.isPresent()) {
  56             Configuration config = optConfig.get();
  57             this.ruleGroupByKey = resolveRuleGroups(config);
  58             List<RendererEndpoint> rendererEps = resolveRendererEndpoints(config);
  59             this.policyTable = resolvePolicy(rendererEps, ruleGroupByKey);
  60             addrEpByKey = resolveAddrEpWithLoc(config);
  61             this.forwardingCtxTable = resolveForwardingCtxTable(config);
  62             this.networkDomainTable = resolveNetworkDomainTable(config);
  63         } else {
  64             this.ruleGroupByKey = ImmutableMap.of();
  65             this.policyTable = ImmutableTable.of();
  66             this.addrEpByKey = ImmutableMap.of();
  67             this.forwardingCtxTable = ImmutableTable.of();
  68             this.networkDomainTable = ImmutableTable.of();
  69         }
  70     }
  71
  72     private static List<RendererEndpoint> resolveRendererEndpoints(Configuration config) {
  73         if (config.getRendererEndpoints() == null) {
  74             return Collections.emptyList();
  75         }
  76         List<RendererEndpoint> rendererEndpoints = config.getRendererEndpoints().getRendererEndpoint();
  77         if (rendererEndpoints == null) {
  78             return Collections.emptyList();
  79         }
  80         return rendererEndpoints;
  81     }
  82
  83     private static ImmutableTable<RendererEndpointKey, PeerEndpointKey, ImmutableSortedSet<RendererResolvedPolicy>> resolvePolicy(
  84             List<RendererEndpoint> rendererEps, Map<RuleGroupKey, ResolvedRuleGroup> ruleGroupInfoByRuleGroupKey) {
  85         Builder<RendererEndpointKey, PeerEndpointKey, ImmutableSortedSet<RendererResolvedPolicy>> resultBuilder =
  86                 new Builder<>();
  87         Supplier<TreeSet<RendererResolvedPolicy>> rendererPolicySupplier = () -> new TreeSet<>();
  88         rendererEps.stream().forEach(rEp -> {
  89             rEp.getPeerEndpoint().stream().filter(Objects::nonNull).forEach(peer -> {
  90                 ImmutableSortedSet<RendererResolvedPolicy> rPolicy =
  91                         peer.getRuleGroupWithRendererEndpointParticipation()
  92                             .stream()
  93                             .map(ruleGroup -> new RendererResolvedPolicy(ruleGroup.getRendererEndpointParticipation(),
  94                                     ruleGroupInfoByRuleGroupKey.get(KeyFactory.ruleGroupKey(ruleGroup.getKey()))))
  95                             .collect(Collectors.collectingAndThen(Collectors.toCollection(rendererPolicySupplier),
  96                                     ImmutableSortedSet::copyOfSorted));
  97                 resultBuilder.put(rEp.getKey(), KeyFactory.peerEndpointKey(peer.getKey()),
  98                         ImmutableSortedSet.copyOfSorted(rPolicy));
  99             });
 100         });
 101         return resultBuilder.build();
 102     }
 103
 104     private static ImmutableMap<RuleGroupKey, ResolvedRuleGroup> resolveRuleGroups(Configuration config) {
 105         return config.getRuleGroups().getRuleGroup().stream().collect(Collectors
 106             .collectingAndThen(Collectors.toMap(RuleGroup::getKey, ResolvedRuleGroup::new), ImmutableMap::copyOf));
 107     }
 108
 109     private static ImmutableTable<TenantId, RendererForwardingContextKey, RendererForwardingContext> resolveForwardingCtxTable(
 110             Configuration config) {
 111         Builder<TenantId, RendererForwardingContextKey, RendererForwardingContext> resultBuilder = new Builder<>();
 112         Optional.ofNullable(config.getRendererForwarding()).map(x -> x.getRendererForwardingByTenant()).ifPresent(x -> {
 113             x.forEach(fwdByTenant -> {
 114                 Optional.ofNullable(fwdByTenant.getRendererForwardingContext()).ifPresent(fwdCtxs -> {
 115                     fwdCtxs.forEach(fwdCtx -> {
 116                         resultBuilder.put(fwdByTenant.getTenantId(), fwdCtx.getKey(), fwdCtx);
 117                     });
 118                 });
 119             });
 120         });
 121         return resultBuilder.build();
 122     }
 123
 124     private static ImmutableTable<TenantId, RendererNetworkDomainKey, RendererNetworkDomain> resolveNetworkDomainTable(
 125             Configuration config) {
 126         Builder<TenantId, RendererNetworkDomainKey, RendererNetworkDomain> resultBuilder = new Builder<>();
 127         Optional.ofNullable(config.getRendererForwarding()).map(x -> x.getRendererForwardingByTenant()).ifPresent(x -> {
 128             x.forEach(fwdByTenant -> {
 129                 Optional.ofNullable(fwdByTenant.getRendererNetworkDomain()).ifPresent(netDomains -> {
 130                     netDomains.forEach(netDomain -> {
 131                         resultBuilder.put(fwdByTenant.getTenantId(), netDomain.getKey(), netDomain);
 132                     });
 133                 });
 134             });
 135         });
 136         return resultBuilder.build();
 137     }
 138
 139     private static ImmutableMap<AddressEndpointKey, AddressEndpointWithLocation> resolveAddrEpWithLoc(
 140             Configuration config) {
 141         return Maps.uniqueIndex(config.getEndpoints().getAddressEndpointWithLocation(),
 142                 new com.google.common.base.Function<AddressEndpointWithLocation, AddressEndpointKey>() {
 143
 144                     @Override
 145                     public AddressEndpointKey apply(AddressEndpointWithLocation input) {
 146                         return new AddressEndpointKey(input.getAddress(), input.getAddressType(), input.getContextId(),
 147                                 input.getContextType());
 148                     }
 149                 });
 150     }
 151
 152     private static Optional<Configuration> resolveValidConfig(RendererPolicy policy) {
 153         Configuration config = policy.getConfiguration();
 154         if (config == null) {
 155             return Optional.empty();
 156         }
 157         if (config.getRendererEndpoints() == null) {
 158             return Optional.empty();
 159         }
 160         return Optional.of(config);
 161     }
 162
 163     public @Nonnull RendererPolicy getPolicy() {
 164         return policy;
 165     }
 166
 167     public @Nonnull ImmutableTable<RendererEndpointKey, PeerEndpointKey, ImmutableSortedSet<RendererResolvedPolicy>> getPolicyTable() {
 168         return policyTable;
 169     }
 170
 171     public @Nonnull ImmutableMap<RuleGroupKey, ResolvedRuleGroup> getRuleGroupByKey() {
 172         return ruleGroupByKey;
 173     }
 174
 175     public @Nonnull ImmutableMap<AddressEndpointKey, AddressEndpointWithLocation> getAddrEpByKey() {
 176         return addrEpByKey;
 177     }
 178
 179     public @Nonnull ImmutableTable<TenantId, RendererForwardingContextKey, RendererForwardingContext> getForwardingCtxTable() {
 180         return forwardingCtxTable;
 181     }
 182
 183     public @Nonnull ImmutableTable<TenantId, RendererNetworkDomainKey, RendererNetworkDomain> getNetworkDomainTable() {
 184         return networkDomainTable;
 185     }
 186
 187     @Override
 188     public String toString() {
 189         return "PolicyContext [policyTable=" + policyTable + ", ruleGroupByKey=" + ruleGroupByKey + ", addrEpByKey="
 190                 + addrEpByKey + ", forwardingCtxTable=" + forwardingCtxTable + ", networkDomainTable="
 191                 + networkDomainTable + "]";
 192     }
 193
 194 }