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