opendaylight/md-sal/samples/clustering-test-app/provider/src/main/java/org/opendaylight/controller/clustering/it/provider/impl/ProduceTransactionsHandler.java

   1 /*
   2  * Copyright (c) 2017 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.controller.clustering.it.provider.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.SettableFuture;
  16 import java.util.ArrayList;
  17 import java.util.Collections;
  18 import java.util.HashSet;
  19 import java.util.List;
  20 import java.util.Set;
  21 import java.util.SplittableRandom;
  22 import java.util.concurrent.Executors;
  23 import java.util.concurrent.ScheduledExecutorService;
  24 import java.util.concurrent.ScheduledFuture;
  25 import java.util.concurrent.TimeUnit;
  26 import javax.annotation.Nullable;
  27 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  28 import org.opendaylight.mdsal.common.api.TransactionCommitFailedException;
  29 import org.opendaylight.mdsal.dom.api.DOMDataTreeCursorAwareTransaction;
  30 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
  31 import org.opendaylight.mdsal.dom.api.DOMDataTreeProducer;
  32 import org.opendaylight.mdsal.dom.api.DOMDataTreeProducerException;
  33 import org.opendaylight.mdsal.dom.api.DOMDataTreeService;
  34 import org.opendaylight.mdsal.dom.api.DOMDataTreeWriteCursor;
  35 import org.opendaylight.yang.gen.v1.tag.opendaylight.org._2017.controller.yang.lowlevel.control.rev170215.ProduceTransactionsInput;
  36 import org.opendaylight.yang.gen.v1.tag.opendaylight.org._2017.controller.yang.lowlevel.control.rev170215.ProduceTransactionsOutput;
  37 import org.opendaylight.yang.gen.v1.tag.opendaylight.org._2017.controller.yang.lowlevel.control.rev170215.ProduceTransactionsOutputBuilder;
  38 import org.opendaylight.yangtools.yang.common.QName;
  39 import org.opendaylight.yangtools.yang.common.RpcError;
  40 import org.opendaylight.yangtools.yang.common.RpcResult;
  41 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
  42 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  43 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  44 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
  45 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
  46 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.CollectionNodeBuilder;
  47 import org.slf4j.Logger;
  48 import org.slf4j.LoggerFactory;
  49
  50 public class ProduceTransactionsHandler implements Runnable {
  51
  52     private static final Logger LOG = LoggerFactory.getLogger(ProduceTransactionsHandler.class);
  53     private static final int SECOND_AS_NANO = 1000000000;
  54     //2^20 as in the model
  55     private static final int MAX_ITEM = 1048576;
  56
  57     private static final QName ID_INTS =
  58             QName.create("tag:opendaylight.org,2017:controller:yang:lowlevel:target", "2017-02-15", "id-ints");
  59     private static final QName ID =
  60             QName.create("tag:opendaylight.org,2017:controller:yang:lowlevel:target", "2017-02-15", "id");
  61     private static final QName ITEM =
  62             QName.create("tag:opendaylight.org,2017:controller:yang:lowlevel:target", "2017-02-15", "item");
  63     private static final QName NUMBER =
  64             QName.create("tag:opendaylight.org,2017:controller:yang:lowlevel:target", "2017-02-15", "number");
  65
  66     public static final YangInstanceIdentifier ID_INTS_YID =
  67             YangInstanceIdentifier.create(new YangInstanceIdentifier.NodeIdentifier(ID_INTS));
  68
  69     private final DOMDataTreeService domDataTreeService;
  70
  71     private final long timeToTake;
  72     private final long delay;
  73     private final String id;
  74
  75     private final ScheduledExecutorService executor = Executors.newSingleThreadScheduledExecutor();
  76     private final ArrayList<CheckedFuture<Void, TransactionCommitFailedException>> futures = new ArrayList<>();
  77     private final Set<Integer> usedValues = new HashSet<>();
  78     private final SplittableRandom random = new SplittableRandom();
  79
  80     private long startTime;
  81     private SettableFuture<RpcResult<ProduceTransactionsOutput>> completionFuture;
  82
  83     private long allTx = 0;
  84     private long insertTx = 0;
  85     private long deleteTx = 0;
  86     private ScheduledFuture<?> scheduledFuture;
  87     private YangInstanceIdentifier idListWithKey;
  88     private DOMDataTreeProducer itemProducer;
  89
  90     public ProduceTransactionsHandler(final DOMDataTreeService domDataTreeService,
  91                                       final ProduceTransactionsInput input) {
  92
  93         this.domDataTreeService = domDataTreeService;
  94
  95         timeToTake = input.getSeconds() * SECOND_AS_NANO;
  96         delay = SECOND_AS_NANO / input.getTransactionsPerSecond();
  97         id = input.getId();
  98     }
  99
 100     @Override
 101     public void run() {
 102         final long current = System.nanoTime();
 103
 104         futures.add(execWrite());
 105
 106         maybeFinish(current);
 107     }
 108
 109     public void start(final SettableFuture<RpcResult<ProduceTransactionsOutput>> settableFuture) {
 110
 111         if (ensureListExists(completionFuture) && fillInitialList(completionFuture)) {
 112             startTime = System.nanoTime();
 113             completionFuture = settableFuture;
 114             scheduledFuture = executor.scheduleAtFixedRate(this, 0, delay, TimeUnit.NANOSECONDS);
 115         } else {
 116             executor.shutdown();
 117         }
 118     }
 119
 120     private boolean ensureListExists(final SettableFuture<RpcResult<ProduceTransactionsOutput>> settableFuture) {
 121
 122         final MapEntryNode entry = ImmutableNodes.mapEntryBuilder(ID_INTS, ID, id)
 123                 .withChild(ImmutableNodes.mapNodeBuilder(ITEM).build())
 124                 .build();
 125         final MapNode mapNode =
 126                 ImmutableNodes.mapNodeBuilder(ID_INTS)
 127                         .withChild(entry)
 128                         .build();
 129
 130         final DOMDataTreeProducer producer = domDataTreeService.createProducer(Collections.singleton(
 131                 new DOMDataTreeIdentifier(LogicalDatastoreType.CONFIGURATION, YangInstanceIdentifier.EMPTY)));
 132
 133         final DOMDataTreeCursorAwareTransaction tx = producer.createTransaction(false);
 134
 135         final DOMDataTreeWriteCursor cursor =
 136                 tx.createCursor(new DOMDataTreeIdentifier(
 137                         LogicalDatastoreType.CONFIGURATION, YangInstanceIdentifier.EMPTY));
 138
 139         idListWithKey = ID_INTS_YID.node(entry.getIdentifier());
 140
 141         cursor.merge(mapNode.getIdentifier(), mapNode);
 142         cursor.close();
 143
 144         try {
 145             tx.submit().checkedGet();
 146         } catch (TransactionCommitFailedException e) {
 147             LOG.warn("Unable to ensure IdInts list for id: {} exists.", id, e);
 148             settableFuture.set(RpcResultBuilder.<ProduceTransactionsOutput>failed()
 149                     .withError(RpcError.ErrorType.APPLICATION, "Unexpected-exception", e).build());
 150             return false;
 151         } finally {
 152             try {
 153                 producer.close();
 154             } catch (DOMDataTreeProducerException e) {
 155                 LOG.warn("Error while closing producer.", e);
 156             }
 157         }
 158
 159         return true;
 160     }
 161
 162     private boolean fillInitialList(final SettableFuture<RpcResult<ProduceTransactionsOutput>> settableFuture) {
 163         LOG.debug("Filling the item list with initial values.");
 164
 165         final CollectionNodeBuilder<MapEntryNode, MapNode> mapBuilder = ImmutableNodes.mapNodeBuilder(ITEM);
 166         for (int i = 0; i < MAX_ITEM / 2; i++) {
 167             usedValues.add(i);
 168             mapBuilder.withChild(ImmutableNodes.mapEntry(ITEM, NUMBER, i));
 169         }
 170
 171         itemProducer = domDataTreeService.createProducer(
 172                 Collections.singleton(new DOMDataTreeIdentifier(LogicalDatastoreType.CONFIGURATION, idListWithKey)));
 173
 174         final DOMDataTreeCursorAwareTransaction tx = itemProducer.createTransaction(false);
 175         final DOMDataTreeWriteCursor cursor =
 176                 tx.createCursor(new DOMDataTreeIdentifier(LogicalDatastoreType.CONFIGURATION, idListWithKey));
 177
 178         final MapNode list = mapBuilder.build();
 179         cursor.write(list.getIdentifier(), list);
 180         cursor.close();
 181
 182         try {
 183             tx.submit().checkedGet();
 184         } catch (final TransactionCommitFailedException e) {
 185             LOG.warn("Unable to fill the initial item list.", e);
 186             settableFuture.set(RpcResultBuilder.<ProduceTransactionsOutput>failed()
 187                     .withError(RpcError.ErrorType.APPLICATION, "Unexpected-exception", e).build());
 188             return false;
 189         }
 190
 191         return true;
 192     }
 193
 194     private CheckedFuture<Void, TransactionCommitFailedException> execWrite() {
 195         final int i = random.nextInt(MAX_ITEM + 1);
 196
 197         final YangInstanceIdentifier entryId =
 198                 idListWithKey.node(ITEM).node(new YangInstanceIdentifier.NodeIdentifierWithPredicates(ITEM, NUMBER, i));
 199
 200         final DOMDataTreeCursorAwareTransaction tx = itemProducer.createTransaction(false);
 201         final DOMDataTreeWriteCursor cursor = tx.createCursor(
 202                 new DOMDataTreeIdentifier(LogicalDatastoreType.CONFIGURATION, idListWithKey.node(ITEM)));
 203         allTx++;
 204
 205         if (usedValues.contains(i)) {
 206             LOG.debug("Deleting item: {}", i);
 207             deleteTx++;
 208             cursor.delete(entryId.getLastPathArgument());
 209             usedValues.remove(i);
 210
 211         } else {
 212             LOG.debug("Inserting item: {}", i);
 213             insertTx++;
 214             final MapEntryNode entry = ImmutableNodes.mapEntry(ITEM, NUMBER, i);
 215             cursor.write(entryId.getLastPathArgument(), entry);
 216             usedValues.add(i);
 217         }
 218
 219         cursor.close();
 220
 221         return tx.submit();
 222     }
 223
 224     private void maybeFinish(final long current) {
 225         if ((current - startTime) > timeToTake) {
 226             LOG.debug("Reached max running time, waiting for futures to complete.");
 227             scheduledFuture.cancel(false);
 228
 229             final ListenableFuture<List<Void>> allFutures = Futures.allAsList(futures);
 230
 231             Futures.addCallback(allFutures, new FutureCallback<List<Void>>() {
 232                 @Override
 233                 public void onSuccess(@Nullable final List<Void> result) {
 234                     LOG.debug("All futures completed successfully.");
 235
 236                     final ProduceTransactionsOutput output = new ProduceTransactionsOutputBuilder()
 237                             .setAllTx(allTx)
 238                             .setInsertTx(insertTx)
 239                             .setDeleteTx(deleteTx)
 240                             .build();
 241
 242                     completionFuture.set(RpcResultBuilder.<ProduceTransactionsOutput>success()
 243                             .withResult(output).build());
 244
 245                     executor.shutdown();
 246                 }
 247
 248                 @Override
 249                 public void onFailure(final Throwable t) {
 250                     LOG.error("Write transactions failed.", t);
 251                     completionFuture.set(RpcResultBuilder.<ProduceTransactionsOutput>failed()
 252                             .withError(RpcError.ErrorType.APPLICATION, "Unexpected-exception", t).build());
 253
 254                     executor.shutdown();
 255                 }
 256             });
 257         }
 258     }
 259 }