sxp-integration/sxp-ep-provider/src/main/java/org/opendaylight/groupbasedpolicy/sxp/ep/provider/impl/EPToSgtMapperImpl.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.sxp.ep.provider.impl;
  10
  11 import com.google.common.base.Function;
  12 import com.google.common.util.concurrent.Futures;
  13 import com.google.common.util.concurrent.ListenableFuture;
  14 import com.google.common.util.concurrent.MoreExecutors;
  15
  16 import java.util.Collection;
  17 import java.util.HashSet;
  18 import javax.annotation.Nullable;
  19 import org.opendaylight.groupbasedpolicy.sxp.ep.provider.api.EPPolicyTemplateDaoFacade;
  20 import org.opendaylight.groupbasedpolicy.sxp.ep.provider.api.EPToSgtMapper;
  21 import org.opendaylight.groupbasedpolicy.sxp.ep.provider.impl.dao.EpPolicyTemplateValueKey;
  22 import org.opendaylight.groupbasedpolicy.sxp.ep.provider.impl.dao.EpPolicyTemplateValueKeyFactory;
  23 import org.opendaylight.groupbasedpolicy.sxp.ep.provider.impl.util.EPTemplateUtil;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.renderer.rev151103.renderers.renderer.renderer.policy.configuration.endpoints.AddressEndpointWithLocation;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.groupbasedpolicy.sxp.integration.sxp.ep.provider.model.rev160302.sxp.ep.mapper.EndpointPolicyTemplateBySgt;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.sxp.database.rev160308.Sgt;
  27
  28 /**
  29  * Purpose: mapper implementation based on {@link ReadableAsyncByKey} (e.g.: {@link EPPolicyTemplateDaoFacade})
  30  */
  31 public class EPToSgtMapperImpl implements EPToSgtMapper {
  32
  33     public static final Function<Collection<EndpointPolicyTemplateBySgt>, Collection<Sgt>> TRANSFORM_TEMPLATE_TO_SGT =
  34             new Function<Collection<EndpointPolicyTemplateBySgt>, Collection<Sgt>>() {
  35                 @Nullable
  36                 @Override
  37                 public Collection<Sgt> apply(@Nullable final Collection<EndpointPolicyTemplateBySgt> input) {
  38                     final Collection<Sgt> sgtBag = new HashSet<>();
  39                     for (EndpointPolicyTemplateBySgt template : input) {
  40                         sgtBag.add(template.getSgt());
  41                     }
  42                     return sgtBag;
  43                 }
  44             };
  45
  46     private final ReadableAsyncByKey<EpPolicyTemplateValueKey, EndpointPolicyTemplateBySgt> epPolicyTemplateReader;
  47     private final EpPolicyTemplateValueKeyFactory keyFactory;
  48
  49     public EPToSgtMapperImpl(final ReadableAsyncByKey<EpPolicyTemplateValueKey, EndpointPolicyTemplateBySgt> epPolicyTemplateReader) {
  50         this.epPolicyTemplateReader = epPolicyTemplateReader;
  51         keyFactory = new EpPolicyTemplateValueKeyFactory(
  52                 EPTemplateUtil.createEndpointGroupIdOrdering(), EPTemplateUtil.createConditionNameOrdering());
  53
  54     }
  55
  56     @Override
  57     public ListenableFuture<Collection<Sgt>> findSgtForEP(final AddressEndpointWithLocation endpointWithLocation) {
  58         final EpPolicyTemplateValueKey rawKey = new EpPolicyTemplateValueKey(endpointWithLocation);
  59         final EpPolicyTemplateValueKey key = keyFactory.sortValueKeyLists(rawKey);
  60         return Futures.transform(epPolicyTemplateReader.readBy(key), TRANSFORM_TEMPLATE_TO_SGT,
  61             MoreExecutors.directExecutor());
  62     }
  63 }