sxp-integration/sxp-ise-adapter/src/main/java/org/opendaylight/groupbasedpolicy/sxp_ise_adapter/impl/GbpIseConfigListenerImpl.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.util.concurrent.CheckedFuture;
  12 import com.google.common.util.concurrent.FutureCallback;
  13 import com.google.common.util.concurrent.Futures;
  14 import com.google.common.util.concurrent.ListenableFuture;
  15 import com.google.common.util.concurrent.MoreExecutors;
  16 import com.google.common.util.concurrent.ThreadFactoryBuilder;
  17 import java.text.SimpleDateFormat;
  18 import java.util.Collection;
  19 import java.util.Date;
  20 import java.util.Optional;
  21 import java.util.concurrent.ExecutionException;
  22 import java.util.concurrent.LinkedBlockingQueue;
  23 import java.util.concurrent.ThreadPoolExecutor;
  24 import java.util.concurrent.TimeUnit;
  25 import java.util.concurrent.TimeoutException;
  26 import javax.annotation.Nonnull;
  27 import javax.annotation.Nullable;
  28 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  29 import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
  30 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  31 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  32 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  33 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Uri;
  34 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.DateAndTime;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.groupbasedpolicy.sxp.integration.sxp.ise.adapter.model.rev160630.GbpSxpIseAdapter;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.groupbasedpolicy.sxp.integration.sxp.ise.adapter.model.rev160630.gbp.sxp.ise.adapter.IseHarvestStatus;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.groupbasedpolicy.sxp.integration.sxp.ise.adapter.model.rev160630.gbp.sxp.ise.adapter.IseHarvestStatusBuilder;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.groupbasedpolicy.sxp.integration.sxp.ise.adapter.model.rev160630.gbp.sxp.ise.adapter.IseSourceConfig;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.groupbasedpolicy.sxp.integration.sxp.ise.adapter.model.rev160630.gbp.sxp.ise.adapter.ise.source.config.ConnectionConfig;
  40 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  41 import org.slf4j.Logger;
  42 import org.slf4j.LoggerFactory;
  43
  44 /**
  45  * Purpose: listen for harvest configuration and trigger harvesting
  46  */
  47 public class GbpIseConfigListenerImpl implements GbpIseConfigListener {
  48
  49     private static final Logger LOG = LoggerFactory.getLogger(GbpIseConfigListenerImpl.class);
  50
  51     private static final String DATE_AND_TIME_FORMAT = "yyyy-MM-dd'T'HH:mm:ss.SSSXXX";
  52
  53     private final DataBroker dataBroker;
  54     private final GbpIseSgtHarvester gbpIseSgtHarvester;
  55     @Nonnull private final EPPolicyTemplateProviderFacade templateProviderFacade;
  56     private final ThreadPoolExecutor pool;
  57
  58     public GbpIseConfigListenerImpl(@Nonnull final DataBroker dataBroker, @Nonnull final GbpIseSgtHarvester gbpIseSgtHarvester,
  59                                     @Nonnull final EPPolicyTemplateProviderFacade templateProviderFacade) {
  60         this.dataBroker = dataBroker;
  61         this.gbpIseSgtHarvester = gbpIseSgtHarvester;
  62         this.templateProviderFacade = templateProviderFacade;
  63         pool = new ThreadPoolExecutor(1, 1, 0, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<>(10),
  64                 new ThreadFactoryBuilder().setNameFormat("ise-sgt-harverster-%d").build()) {
  65             @Override
  66             protected void afterExecute(final Runnable r, final Throwable t) {
  67                 super.afterExecute(r, t);
  68                 if (t != null) {
  69                     LOG.warn("ise harvest task failed", t);
  70                 }
  71             }
  72         };
  73     }
  74
  75     @Override
  76     public void onDataTreeChanged(@Nonnull final Collection<DataTreeModification<IseSourceConfig>> collection) {
  77         for (DataTreeModification<IseSourceConfig> modification : collection) {
  78             final IseSourceConfig iseSourceConfig = modification.getRootNode().getDataAfter();
  79             final IseContext iseContext = new IseContext(iseSourceConfig);
  80             templateProviderFacade.assignIseContext(iseContext);
  81             if (iseSourceConfig != null) {
  82                 final Optional<ConnectionConfig> connectionConfig = Optional.ofNullable(iseSourceConfig.getConnectionConfig());
  83                 LOG.debug("Ise-source config assigned: {} -> {}", iseSourceConfig.getTenant(),
  84                         connectionConfig.map(ConnectionConfig::getIseRestUrl).orElse(new Uri("n/a")));
  85                 pool.submit(() -> {
  86                     final ListenableFuture<Collection<SgtInfo>> harvestResult = gbpIseSgtHarvester.harvestAll(iseContext);
  87                     Futures.addCallback(harvestResult, new FutureCallback<Collection<SgtInfo>>() {
  88                         @Override
  89                         public void onSuccess(@Nullable final Collection<SgtInfo> result) {
  90                             final Integer counter = Optional.ofNullable(result).map(Collection::size).orElse(0);
  91                             LOG.debug("ise harvest finished, outcome: {}", counter);
  92                             storeOutcome(true, counter, null);
  93                         }
  94
  95                         @Override
  96                         public void onFailure(final Throwable t) {
  97                             LOG.debug("ise harvest failed", t);
  98                             storeOutcome(false, 0, t.getMessage());
  99                         }
 100                     }, MoreExecutors.directExecutor());
 101
 102                     try {
 103                         harvestResult.get(30, TimeUnit.SECONDS);
 104                     } catch (InterruptedException | ExecutionException | TimeoutException e) {
 105                         LOG.debug("failed to finish ise-sgt-harvest task properly on time", e);
 106                     }
 107                 });
 108             } else {
 109                 LOG.debug("Ise-source config removed");
 110             }
 111         }
 112     }
 113
 114     private CheckedFuture<Void, TransactionCommitFailedException> storeOutcome(final boolean succeeded, final int counter, final String reason) {
 115         final WriteTransaction wTx = dataBroker.newWriteOnlyTransaction();
 116         final InstanceIdentifier<IseHarvestStatus> harvestStatusPath = InstanceIdentifier.create(GbpSxpIseAdapter.class)
 117                 .child(IseHarvestStatus.class);
 118         final IseHarvestStatus harvestStatus = new IseHarvestStatusBuilder()
 119                 .setReason(reason)
 120                 .setSuccess(succeeded)
 121                 .setTemplatesWritten(counter)
 122                 .setTimestamp(createDateTime(new Date()))
 123                 .build();
 124         wTx.put(LogicalDatastoreType.OPERATIONAL, harvestStatusPath, harvestStatus, true);
 125         return wTx.submit();
 126     }
 127
 128     private static DateAndTime createDateTime(Date when) {
 129         final SimpleDateFormat simpleDateFormat = new SimpleDateFormat(DATE_AND_TIME_FORMAT);
 130         return new DateAndTime(simpleDateFormat.format(when));
 131     }
 132
 133     @Override
 134     public void close() throws Exception {
 135         if (! pool.isTerminated()) {
 136             pool.shutdown();
 137             final boolean terminated = pool.awaitTermination(10, TimeUnit.SECONDS);
 138             if (! terminated) {
 139                 pool.shutdownNow();
 140             }
 141         }
 142     }
 143 }