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.FutureCallback;
  14 import com.google.common.util.concurrent.Futures;
  15 import com.google.common.util.concurrent.ListenableFuture;
  16 import com.google.common.util.concurrent.MoreExecutors;
  17
  18 import java.util.Collection;
  19 import java.util.Collections;
  20 import java.util.Optional;
  21 import javax.annotation.Nonnull;
  22 import javax.annotation.Nullable;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.EndpointGroupId;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.TenantId;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.groupbasedpolicy.sxp.integration.sxp.ep.provider.model.rev160302.TemplateGenerated;
  26 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;
  27 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;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.sxp.database.rev160308.Sgt;
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31
  32 /**
  33  * Purpose: query ise in order to get name of sgt for given tenant and build {@link EndpointPolicyTemplateBySgt}
  34  */
  35 public class EPPolicyTemplateProviderIseImpl implements EPPolicyTemplateProviderFacade {
  36
  37     private static final Logger LOG = LoggerFactory.getLogger(EPPolicyTemplateProviderIseImpl.class);
  38
  39     private Optional<IseContext> iseContext = Optional.empty();
  40     private GbpIseSgtHarvester iseSgtHarvester;
  41
  42     @Override
  43     public ListenableFuture<Optional<EndpointPolicyTemplateBySgt>> provideTemplate(@Nonnull final Sgt sgt) {
  44         return findIseSourceConfigBySgt(sgt)
  45                 .map(iseContext -> queryIseAndBuildTemplate(iseContext, sgt))
  46                 .orElse(Futures.immediateFuture(Optional.empty()));
  47     }
  48
  49     private ListenableFuture<Optional<EndpointPolicyTemplateBySgt>> queryIseAndBuildTemplate(final IseContext iseContext, final Sgt sgt) {
  50         final ListenableFuture<Optional<String>> sgtNameFu = queryIseOnSgt(iseContext, sgt);
  51         return Futures.transform(sgtNameFu, new Function<Optional<String>, Optional<EndpointPolicyTemplateBySgt>>() {
  52             @Nullable
  53             @Override
  54             public Optional<EndpointPolicyTemplateBySgt> apply(@Nullable final Optional<String> input) {
  55                 return Optional.ofNullable(input)
  56                         .flatMap(i -> i.map(sgtName -> buildTemplate(sgt, iseContext.getIseSourceConfig().getTenant(), sgtName)));
  57             }
  58         }, MoreExecutors.directExecutor());
  59     }
  60
  61     private EndpointPolicyTemplateBySgt buildTemplate(final @Nonnull Sgt sgt, final @Nonnull TenantId tenantId,
  62                                                       final @Nonnull String sgtName) {
  63         return new EndpointPolicyTemplateBySgtBuilder()
  64                 .setSgt(sgt)
  65                 .setEndpointGroups(Collections.singletonList(new EndpointGroupId(sgtName)))
  66                 .setTenant(tenantId)
  67                 // no conditions
  68                 .setOrigin(TemplateGenerated.class)
  69                 .build();
  70     }
  71
  72     private ListenableFuture<Optional<String>> queryIseOnSgt(final IseContext iseContext, @Nonnull final Sgt sgt) {
  73         final ListenableFuture<Collection<SgtInfo>> sgtUpdateFu = iseSgtHarvester.harvestAll(iseContext);
  74
  75         Futures.addCallback(sgtUpdateFu, new FutureCallback<Collection<SgtInfo>>() {
  76             @Override
  77             public void onSuccess(@Nullable final Collection<SgtInfo> result) {
  78                 final Integer amount = Optional.ofNullable(result).map(Collection::size).orElse(0);
  79                 LOG.debug("[epPolicyTemplateProvider] harvestAll succeeded: {}", amount);
  80             }
  81
  82             @Override
  83             public void onFailure(final Throwable t) {
  84                 LOG.debug("[epPolicyTemplateProvider] harvestAll FAILED: {}", t.getMessage());
  85             }
  86         }, MoreExecutors.directExecutor());
  87
  88         return Futures.transform(sgtUpdateFu, new Function<Collection<SgtInfo>, Optional<String>>() {
  89             @Nullable
  90             @Override
  91             public Optional<String> apply(@Nullable final Collection<SgtInfo> input) {
  92                 // pick first sgtInfo which equals to given sgt
  93                 return Optional.ofNullable(input)
  94                         .flatMap(safeInput -> safeInput.stream()
  95                                 .filter(sgtInfo -> sgt.equals(sgtInfo.getSgt())).findFirst()
  96                                 .map(SgtInfo::getName));
  97             }
  98         }, MoreExecutors.directExecutor());
  99     }
 100
 101     private Optional<IseContext> findIseSourceConfigBySgt(final Sgt sgt) {
 102         // expected relation (ise : tenant) == (1:1)
 103         return iseContext
 104                 .filter(context ->
 105                         context.getIseSourceConfig() != null && Range.closed(
 106                                 context.getIseSourceConfig().getSgtRangeMin().getValue(),
 107                                 context.getIseSourceConfig().getSgtRangeMax().getValue()
 108                         ).contains(sgt.getValue())
 109                 );
 110     }
 111
 112     @Override
 113     public void assignIseContext(final @Nullable IseContext iseContext) {
 114         this.iseContext = Optional.ofNullable(iseContext);
 115     }
 116
 117     @Override
 118     public void setIseSgtHarvester(final GbpIseSgtHarvester iseSgtHarvester) {
 119         this.iseSgtHarvester = iseSgtHarvester;
 120     }
 121 }