groupbasedpolicy/src/main/java/org/opendaylight/groupbasedpolicy/renderer/DtoEquivalenceUtils.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;
  10
  11 import java.util.List;
  12 import java.util.Map;
  13 import java.util.Objects;
  14
  15 import javax.annotation.Nullable;
  16
  17 import com.google.common.annotations.VisibleForTesting;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.CommonEndpointFields;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.NatAddress;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.endpoint.locations.AddressEndpointLocation;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.endpoint.locations.ContainmentEndpointLocation;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.endpoints.address.endpoints.AddressEndpoint;
  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.base_endpoint.rev160427.endpoints.containment.endpoints.ContainmentEndpoint;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.endpoints.containment.endpoints.ContainmentEndpointKey;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.has.relative.location.RelativeLocations;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.TenantId;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.rev160427.Forwarding;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.forwarding.rev160427.forwarding.ForwardingByTenant;
  30
  31 import com.google.common.base.Equivalence;
  32 import com.google.common.base.Function;
  33 import com.google.common.collect.ImmutableMap;
  34 import com.google.common.collect.MapDifference;
  35 import com.google.common.collect.Maps;
  36
  37 class DtoEquivalenceUtils {
  38
  39     private static final Function<ForwardingByTenant, TenantId> FORWARDING_BY_TENANT_TO_TENANT_ID =
  40             new Function<ForwardingByTenant, TenantId>() {
  41
  42                 @Override
  43                 public TenantId apply(ForwardingByTenant input) {
  44                     return input.getTenantId();
  45                 }
  46             };
  47
  48     @VisibleForTesting
  49     static final Equivalence<AddressEndpoint> ADDR_EP_EQ = new Equivalence<AddressEndpoint>() {
  50
  51         @Override
  52         protected boolean doEquivalent(AddressEndpoint a, AddressEndpoint b) {
  53             if (!Objects.equals(a.getKey(), b.getKey())) {
  54                 return false;
  55             }
  56             if (!Objects.equals(a.getParentEndpointChoice(), b.getParentEndpointChoice())) {
  57                 return false;
  58             }
  59             if (!equalsDtoLists(a.getChildEndpoint(), b.getChildEndpoint())) {
  60                 return false;
  61             }
  62             if (!equalsCommonEndpointFields(a, b)) {
  63                 return false;
  64             }
  65             if (!equalsAugmentations(a, b)) {
  66                 return false;
  67             }
  68             return true;
  69         }
  70
  71         @Override
  72         protected int doHash(AddressEndpoint t) {
  73             return t.hashCode();
  74         }
  75     };
  76     @VisibleForTesting
  77     static final Equivalence<ContainmentEndpoint> CONT_EP_EQ = new Equivalence<ContainmentEndpoint>() {
  78
  79         @Override
  80         protected boolean doEquivalent(ContainmentEndpoint a, ContainmentEndpoint b) {
  81             if (!Objects.equals(a.getKey(), b.getKey())) {
  82                 return false;
  83             }
  84             if (!equalsDtoLists(a.getChildEndpoint(), b.getChildEndpoint())) {
  85                 return false;
  86             }
  87             if (!equalsCommonEndpointFields(a, b)) {
  88                 return false;
  89             }
  90             return true;
  91         }
  92
  93         @Override
  94         protected int doHash(ContainmentEndpoint t) {
  95             return t.hashCode();
  96         }
  97     };
  98     @VisibleForTesting
  99     static final Equivalence<AddressEndpointLocation> ADDR_EP_LOC_EQ =
 100             new Equivalence<AddressEndpointLocation>() {
 101
 102                 @Override
 103                 protected boolean doEquivalent(AddressEndpointLocation a, AddressEndpointLocation b) {
 104                     if (!Objects.equals(a.getKey(), b.getKey())) {
 105                         return false;
 106                     }
 107                     if (!Objects.equals(a.getAbsoluteLocation(), b.getAbsoluteLocation())) {
 108                         return false;
 109                     }
 110                     if (!equalsRelativeLocations(a.getRelativeLocations(), b.getRelativeLocations())) {
 111                         return false;
 112                     }
 113                     return true;
 114                 }
 115
 116                 @Override
 117                 protected int doHash(AddressEndpointLocation t) {
 118                     return t.hashCode();
 119                 }
 120             };
 121     @VisibleForTesting
 122     static final Equivalence<ContainmentEndpointLocation> CONT_EP_LOC_EQ =
 123             new Equivalence<ContainmentEndpointLocation>() {
 124
 125                 @Override
 126                 protected boolean doEquivalent(ContainmentEndpointLocation a, ContainmentEndpointLocation b) {
 127                     if (!Objects.equals(a.getKey(), b.getKey())) {
 128                         return false;
 129                     }
 130                     if (!equalsRelativeLocations(a.getRelativeLocations(), b.getRelativeLocations())) {
 131                         return false;
 132                     }
 133                     return true;
 134                 }
 135
 136                 @Override
 137                 protected int doHash(ContainmentEndpointLocation t) {
 138                     return t.hashCode();
 139                 }
 140             };
 141     @VisibleForTesting
 142     static final Equivalence<ForwardingByTenant> FWD_BY_TENANT_EQ = new Equivalence<ForwardingByTenant>() {
 143
 144         @Override
 145         protected boolean doEquivalent(ForwardingByTenant x, ForwardingByTenant y) {
 146             if (!Objects.equals(x.getKey(), y.getKey())) {
 147                 return false;
 148             }
 149             if (!equalsDtoLists(x.getForwardingContext(), y.getForwardingContext())) {
 150                 return false;
 151             }
 152             if (!equalsDtoLists(x.getNetworkDomain(), y.getNetworkDomain())) {
 153                 return false;
 154             }
 155             return true;
 156         }
 157
 158         @Override
 159         protected int doHash(ForwardingByTenant t) {
 160             return t.hashCode();
 161         }
 162     };
 163
 164     private DtoEquivalenceUtils() {}
 165
 166     private static boolean equalsAugmentations(AddressEndpoint a, AddressEndpoint b) {
 167         if (a.getAugmentation(NatAddress.class) != null && b.getAugmentation(NatAddress.class) != null) {
 168             if (!a.getAugmentation(NatAddress.class)
 169                 .getNatAddress()
 170                 .equals(b.getAugmentation(NatAddress.class).getNatAddress())) {
 171                 return false;
 172             }
 173         } else if (a.getAugmentation(NatAddress.class) != null || b.getAugmentation(NatAddress.class) != null) {
 174             return false;
 175         }
 176         return true;
 177     }
 178
 179     static boolean equalsAddressEpByKey(@Nullable Map<AddressEndpointKey, AddressEndpoint> o1,
 180             @Nullable Map<AddressEndpointKey, AddressEndpoint> o2) {
 181         return equalsDtoMapsByEquivalence(o1, o2, ADDR_EP_EQ);
 182     }
 183
 184     static boolean equalsContainmentEpByKey(@Nullable Map<ContainmentEndpointKey, ContainmentEndpoint> o1,
 185             @Nullable Map<ContainmentEndpointKey, ContainmentEndpoint> o2) {
 186         return equalsDtoMapsByEquivalence(o1, o2, CONT_EP_EQ);
 187     }
 188
 189     static boolean equalsAddrEpLocByAddrEpKey(Map<AddressEndpointKey, AddressEndpointLocation> o1,
 190             Map<AddressEndpointKey, AddressEndpointLocation> o2) {
 191         return equalsDtoMapsByEquivalence(o1, o2, ADDR_EP_LOC_EQ);
 192     }
 193
 194     static boolean equalsContEpLocByContEpKey(Map<ContainmentEndpointKey, ContainmentEndpointLocation> o1,
 195             Map<ContainmentEndpointKey, ContainmentEndpointLocation> o2) {
 196         return equalsDtoMapsByEquivalence(o1, o2, CONT_EP_LOC_EQ);
 197     }
 198
 199     static boolean equalsForwarding(@Nullable Forwarding a, @Nullable Forwarding b) {
 200         if ((a == null && b != null) || (a != null && b == null)) {
 201             return false;
 202         }
 203         if (a == null && b == null) {
 204             return true;
 205         }
 206         return equalsForwardingByTenantLists(a.getForwardingByTenant(), b.getForwardingByTenant());
 207     }
 208
 209     private static boolean equalsCommonEndpointFields(CommonEndpointFields a, CommonEndpointFields b) {
 210         if (!Objects.equals(a.getNetworkContainment(), b.getNetworkContainment())) {
 211             return false;
 212         }
 213         if (!Objects.equals(a.getTenant(), b.getTenant())) {
 214             return false;
 215         }
 216         if (!Objects.equals(a.getTimestamp(), b.getTimestamp())) {
 217             return false;
 218         }
 219         if (!equalsDtoLists(a.getCondition(), b.getCondition())) {
 220             return false;
 221         }
 222         if (!equalsDtoLists(a.getEndpointGroup(), b.getEndpointGroup())) {
 223             return false;
 224         }
 225         return true;
 226     }
 227
 228     private static boolean equalsRelativeLocations(RelativeLocations a, RelativeLocations b) {
 229         if ((a == null && b != null) || (a != null && b == null)) {
 230             return false;
 231         }
 232         if (a == null && b == null) {
 233             return true;
 234         }
 235         if (!equalsDtoLists(a.getExternalLocation(), b.getExternalLocation())) {
 236             return false;
 237         }
 238         if (!equalsDtoLists(a.getInternalLocation(), b.getInternalLocation())) {
 239             return false;
 240         }
 241         return true;
 242     }
 243
 244     private static boolean equalsForwardingByTenantLists(List<ForwardingByTenant> a, List<ForwardingByTenant> b) {
 245         if ((a == null && b != null) || (a != null && b == null)) {
 246             return false;
 247         }
 248         if (a == null && b == null) {
 249             return true;
 250         }
 251         if (a.size() != b.size()) {
 252             return false;
 253         }
 254         ImmutableMap<TenantId, ForwardingByTenant> aMap = Maps.uniqueIndex(a, FORWARDING_BY_TENANT_TO_TENANT_ID);
 255         ImmutableMap<TenantId, ForwardingByTenant> bMap = Maps.uniqueIndex(b, FORWARDING_BY_TENANT_TO_TENANT_ID);
 256         return equalsDtoMapsByEquivalence(aMap, bMap, FWD_BY_TENANT_EQ);
 257     }
 258
 259     private static <K, V> boolean equalsDtoMapsByEquivalence(@Nullable Map<K, V> o1, @Nullable Map<K, V> o2,
 260             Equivalence<V> eq) {
 261         if ((o1 == null && o2 != null) || (o1 != null && o2 == null)) {
 262             return false;
 263         }
 264         if (o1 == null && o2 == null) {
 265             return true;
 266         }
 267         if (o1.size() != o2.size()) {
 268             return false;
 269         }
 270         MapDifference<K, V> diff = Maps.difference(o1, o2, eq);
 271         if (!diff.entriesOnlyOnLeft().isEmpty() || !diff.entriesOnlyOnRight().isEmpty()) {
 272             return false;
 273         }
 274         if (!diff.entriesDiffering().isEmpty()) {
 275             return false;
 276         }
 277         return true;
 278     }
 279
 280     private static <T> boolean equalsDtoLists(@Nullable List<T> a, @Nullable List<T> b) {
 281         if ((a == null && b != null) || (a != null && b == null)) {
 282             return false;
 283         }
 284         if (a == null && b == null) {
 285             return true;
 286         }
 287         return a.size() == b.size() && a.containsAll(b);
 288     }
 289 }