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