sxp-integration/sxp-ise-adapter/src/main/java/org/opendaylight/groupbasedpolicy/sxp_ise_adapter/impl/EPPolicyTemplateProviderIseImpl.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_ise_adapter.impl;
  10
  11 import com.google.common.base.Function;
  12 import com.google.common.collect.Range;
  13 import com.google.common.util.concurrent.Futures;
  14 import com.google.common.util.concurrent.ListenableFuture;
  15 import java.util.Collection;
  16 import java.util.Collections;
  17 import java.util.Optional;
  18 import javax.annotation.Nonnull;
  19 import javax.annotation.Nullable;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.EndpointGroupId;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.TenantId;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.groupbasedpolicy.sxp.integration.sxp.ep.provider.model.rev160302.TemplateGenerated;
  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.params.xml.ns.yang.controller.config.groupbasedpolicy.sxp.integration.sxp.ep.provider.model.rev160302.sxp.ep.mapper.EndpointPolicyTemplateBySgtBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.sxp.database.rev160308.Sgt;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 /**
  30  * Purpose: query ise in order to get name of sgt for given tenant and build {@link EndpointPolicyTemplateBySgt}
  31  */
  32 public class EPPolicyTemplateProviderIseImpl implements EPPolicyTemplateProviderFacade {
  33
  34     private static final Logger LOG = LoggerFactory.getLogger(EPPolicyTemplateProviderIseImpl.class);
  35
  36     private Optional<IseContext> iseContext = Optional.empty();
  37     private GbpIseSgtHarvester iseSgtHarvester;
  38
  39     @Override
  40     public ListenableFuture<Optional<EndpointPolicyTemplateBySgt>> provideTemplate(@Nonnull final Sgt sgt) {
  41         return findIseSourceConfigBySgt(sgt)
  42                 .map(iseContext -> queryIseAndBuildTemplate(iseContext, sgt))
  43                 .orElse(Futures.immediateFuture(Optional.empty()));
  44     }
  45
  46     private ListenableFuture<Optional<EndpointPolicyTemplateBySgt>> queryIseAndBuildTemplate(final IseContext iseContext, final Sgt sgt) {
  47         final ListenableFuture<Optional<String>> sgtNameFu = queryIseOnSgt(iseContext, sgt);
  48         return Futures.transform(sgtNameFu, new Function<Optional<String>, Optional<EndpointPolicyTemplateBySgt>>() {
  49             @Nullable
  50             @Override
  51             public Optional<EndpointPolicyTemplateBySgt> apply(@Nullable final Optional<String> input) {
  52                 return Optional.ofNullable(input)
  53                         .flatMap(i -> i.map(sgtName -> buildTemplate(sgt, iseContext.getIseSourceConfig().getTenant(), sgtName)));
  54             }
  55         });
  56     }
  57
  58     private EndpointPolicyTemplateBySgt buildTemplate(final @Nonnull Sgt sgt, final @Nonnull TenantId tenantId,
  59                                                       final @Nonnull String sgtName) {
  60         return new EndpointPolicyTemplateBySgtBuilder()
  61                 .setSgt(sgt)
  62                 .setEndpointGroups(Collections.singletonList(new EndpointGroupId(sgtName)))
  63                 .setTenant(tenantId)
  64                 // no conditions
  65                 .setOrigin(TemplateGenerated.class)
  66                 .build();
  67     }
  68
  69     private ListenableFuture<Optional<String>> queryIseOnSgt(final IseContext iseContext, @Nonnull final Sgt sgt) {
  70         final ListenableFuture<Collection<SgtInfo>> sgtUpdateFu = iseSgtHarvester.harvestAll(iseContext);
  71         return Futures.transform(sgtUpdateFu, new Function<Collection<SgtInfo>, Optional<String>>() {
  72             @Nullable
  73             @Override
  74             public Optional<String> apply(@Nullable final Collection<SgtInfo> input) {
  75                 // pick first sgtInfo which equals to given sgt
  76                 return Optional.ofNullable(input)
  77                         .flatMap(safeInput -> safeInput.stream()
  78                                 .filter(sgtInfo -> sgt.equals(sgtInfo.getSgt())).findFirst()
  79                                 .map(SgtInfo::getName));
  80             }
  81         });
  82     }
  83
  84     private Optional<IseContext> findIseSourceConfigBySgt(final Sgt sgt) {
  85         // expected relation (ise : tenant) == (1:1)
  86         return iseContext
  87                 .filter(context ->
  88                         Range.closed(context.getIseSourceConfig().getSgtRangeMin().getValue(),
  89                                 context.getIseSourceConfig().getSgtRangeMax().getValue())
  90                                 .contains(sgt.getValue())
  91                 );
  92     }
  93
  94     @Override
  95     public void assignIseContext(final @Nullable IseContext iseContext) {
  96         this.iseContext = Optional.ofNullable(iseContext);
  97     }
  98
  99     @Override
 100     public void setIseSgtHarvester(final GbpIseSgtHarvester iseSgtHarvester) {
 101         this.iseSgtHarvester = iseSgtHarvester;
 102     }
 103 }