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 java.util.Collections;
  12 import java.util.List;
  13 import java.util.Map;
  14 import java.util.Objects;
  15 import java.util.Optional;
  16 import java.util.TreeSet;
  17 import java.util.function.Supplier;
  18 import java.util.stream.Collectors;
  19
  20 import javax.annotation.Nonnull;
  21
  22 import org.opendaylight.groupbasedpolicy.renderer.vpp.util.KeyFactory;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.endpoints.address.endpoints.AddressEndpointKey;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.TenantId;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.RendererPolicy;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.Configuration;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.endpoints.AddressEndpointWithLocation;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.endpoints.RendererEndpoint;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.endpoints.RendererEndpointKey;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.endpoints.renderer.endpoint.PeerEndpointKey;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererForwardingContext;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererForwardingContextKey;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererNetworkDomain;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.renderer.forwarding.renderer.forwarding.by.tenant.RendererNetworkDomainKey;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.rule.groups.RuleGroup;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.rule.groups.RuleGroupKey;
  37
  38 import com.google.common.base.Preconditions;
  39 import com.google.common.collect.ImmutableMap;
  40 import com.google.common.collect.ImmutableSortedSet;
  41 import com.google.common.collect.ImmutableTable;
  42 import com.google.common.collect.ImmutableTable.Builder;
  43 import com.google.common.collect.Maps;
  44
  45 public class PolicyContext {
  46
  47     private final RendererPolicy policy;
  48     private final ImmutableTable<RendererEndpointKey, PeerEndpointKey, ImmutableSortedSet<RendererResolvedPolicy>> policyTable;
  49     private final ImmutableMap<RuleGroupKey, ResolvedRuleGroup> ruleGroupByKey;
  50     private final ImmutableMap<AddressEndpointKey, AddressEndpointWithLocation> addrEpByKey;
  51     private final ImmutableTable<TenantId, RendererForwardingContextKey, RendererForwardingContext> forwardingCtxTable;
  52     private final ImmutableTable<TenantId, RendererNetworkDomainKey, RendererNetworkDomain> networkDomainTable;
  53
  54     public PolicyContext(@Nonnull RendererPolicy policy) {
  55         this.policy = Preconditions.checkNotNull(policy);
  56         Optional<Configuration> optConfig = resolveValidConfig(policy);
  57         if (optConfig.isPresent()) {
  58             Configuration config = optConfig.get();
  59             this.ruleGroupByKey = resolveRuleGroups(config);
  60             List<RendererEndpoint> rendererEps = resolveRendererEndpoints(config);
  61             this.policyTable = resolvePolicy(rendererEps, ruleGroupByKey);
  62             addrEpByKey = resolveAddrEpWithLoc(config);
  63             this.forwardingCtxTable = resolveForwardingCtxTable(config);
  64             this.networkDomainTable = resolveNetworkDomainTable(config);
  65         } else {
  66             this.ruleGroupByKey = ImmutableMap.of();
  67             this.policyTable = ImmutableTable.of();
  68             this.addrEpByKey = ImmutableMap.of();
  69             this.forwardingCtxTable = ImmutableTable.of();
  70             this.networkDomainTable = ImmutableTable.of();
  71         }
  72     }
  73
  74     private static List<RendererEndpoint> resolveRendererEndpoints(Configuration config) {
  75         if (config.getRendererEndpoints() == null) {
  76             return Collections.emptyList();
  77         }
  78         List<RendererEndpoint> rendererEndpoints = config.getRendererEndpoints().getRendererEndpoint();
  79         if (rendererEndpoints == null) {
  80             return Collections.emptyList();
  81         }
  82         return rendererEndpoints;
  83     }
  84
  85     private static ImmutableTable<RendererEndpointKey, PeerEndpointKey, ImmutableSortedSet<RendererResolvedPolicy>> resolvePolicy(
  86             List<RendererEndpoint> rendererEps, Map<RuleGroupKey, ResolvedRuleGroup> ruleGroupInfoByRuleGroupKey) {
  87         Builder<RendererEndpointKey, PeerEndpointKey, ImmutableSortedSet<RendererResolvedPolicy>> resultBuilder =
  88                 new Builder<>();
  89         Supplier<TreeSet<RendererResolvedPolicy>> rendererPolicySupplier = () -> new TreeSet<>();
  90         rendererEps.stream().forEach(rEp -> {
  91             rEp.getPeerEndpoint().stream().filter(Objects::nonNull).forEach(peer -> {
  92                 ImmutableSortedSet<RendererResolvedPolicy> rPolicy =
  93                         peer.getRuleGroupWithRendererEndpointParticipation()
  94                             .stream()
  95                             .map(ruleGroup -> new RendererResolvedPolicy(ruleGroup.getRendererEndpointParticipation(),
  96                                     ruleGroupInfoByRuleGroupKey.get(KeyFactory.ruleGroupKey(ruleGroup.getKey()))))
  97                             .collect(Collectors.collectingAndThen(Collectors.toCollection(rendererPolicySupplier),
  98                                     ImmutableSortedSet::copyOfSorted));
  99                 resultBuilder.put(rEp.getKey(), KeyFactory.peerEndpointKey(peer.getKey()),
 100                         ImmutableSortedSet.copyOfSorted(rPolicy));
 101             });
 102         });
 103         return resultBuilder.build();
 104     }
 105
 106     private static ImmutableMap<RuleGroupKey, ResolvedRuleGroup> resolveRuleGroups(Configuration config) {
 107         return config.getRuleGroups().getRuleGroup().stream().collect(Collectors
 108             .collectingAndThen(Collectors.toMap(RuleGroup::getKey, ResolvedRuleGroup::new), ImmutableMap::copyOf));
 109     }
 110
 111     private static ImmutableTable<TenantId, RendererForwardingContextKey, RendererForwardingContext> resolveForwardingCtxTable(
 112             Configuration config) {
 113         Builder<TenantId, RendererForwardingContextKey, RendererForwardingContext> resultBuilder = new Builder<>();
 114         Optional.ofNullable(config.getRendererForwarding()).map(x -> x.getRendererForwardingByTenant()).ifPresent(x -> {
 115             x.forEach(fwdByTenant -> {
 116                 Optional.ofNullable(fwdByTenant.getRendererForwardingContext()).ifPresent(fwdCtxs -> {
 117                     fwdCtxs.forEach(fwdCtx -> {
 118                         resultBuilder.put(fwdByTenant.getTenantId(), fwdCtx.getKey(), fwdCtx);
 119                     });
 120                 });
 121             });
 122         });
 123         return resultBuilder.build();
 124     }
 125
 126     private static ImmutableTable<TenantId, RendererNetworkDomainKey, RendererNetworkDomain> resolveNetworkDomainTable(
 127             Configuration config) {
 128         Builder<TenantId, RendererNetworkDomainKey, RendererNetworkDomain> resultBuilder = new Builder<>();
 129         Optional.ofNullable(config.getRendererForwarding()).map(x -> x.getRendererForwardingByTenant()).ifPresent(x -> {
 130             x.forEach(fwdByTenant -> {
 131                 Optional.ofNullable(fwdByTenant.getRendererNetworkDomain()).ifPresent(netDomains -> {
 132                     netDomains.forEach(netDomain -> {
 133                         resultBuilder.put(fwdByTenant.getTenantId(), netDomain.getKey(), netDomain);
 134                     });
 135                 });
 136             });
 137         });
 138         return resultBuilder.build();
 139     }
 140
 141     private static ImmutableMap<AddressEndpointKey, AddressEndpointWithLocation> resolveAddrEpWithLoc(
 142             Configuration config) {
 143         return Maps.uniqueIndex(config.getEndpoints().getAddressEndpointWithLocation(),
 144                 new com.google.common.base.Function<AddressEndpointWithLocation, AddressEndpointKey>() {
 145
 146                     @Override
 147                     public AddressEndpointKey apply(AddressEndpointWithLocation input) {
 148                         return new AddressEndpointKey(input.getAddress(), input.getAddressType(), input.getContextId(),
 149                                 input.getContextType());
 150                     }
 151                 });
 152     }
 153
 154     private static Optional<Configuration> resolveValidConfig(RendererPolicy policy) {
 155         Configuration config = policy.getConfiguration();
 156         if (config == null) {
 157             return Optional.empty();
 158         }
 159         if (config.getRendererEndpoints() == null) {
 160             return Optional.empty();
 161         }
 162         return Optional.of(config);
 163     }
 164
 165     public @Nonnull RendererPolicy getPolicy() {
 166         return policy;
 167     }
 168
 169     public @Nonnull ImmutableTable<RendererEndpointKey, PeerEndpointKey, ImmutableSortedSet<RendererResolvedPolicy>> getPolicyTable() {
 170         return policyTable;
 171     }
 172
 173     public @Nonnull ImmutableMap<RuleGroupKey, ResolvedRuleGroup> getRuleGroupByKey() {
 174         return ruleGroupByKey;
 175     }
 176
 177     public @Nonnull ImmutableMap<AddressEndpointKey, AddressEndpointWithLocation> getAddrEpByKey() {
 178         return addrEpByKey;
 179     }
 180
 181     public @Nonnull ImmutableTable<TenantId, RendererForwardingContextKey, RendererForwardingContext> getForwardingCtxTable() {
 182         return forwardingCtxTable;
 183     }
 184
 185     public @Nonnull ImmutableTable<TenantId, RendererNetworkDomainKey, RendererNetworkDomain> getNetworkDomainTable() {
 186         return networkDomainTable;
 187     }
 188
 189     @Override
 190     public String toString() {
 191         return "PolicyContext [policyTable=" + policyTable + ", ruleGroupByKey=" + ruleGroupByKey + ", addrEpByKey="
 192                 + addrEpByKey + ", forwardingCtxTable=" + forwardingCtxTable + ", networkDomainTable="
 193                 + networkDomainTable + "]";
 194     }
 195
 196 }