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