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.base.Preconditions;
  12 import com.google.common.util.concurrent.FluentFuture;
  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.Collections;
  17 import java.util.HashSet;
  18 import java.util.Set;
  19 import java.util.SplittableRandom;
  20 import java.util.concurrent.ExecutionException;
  21 import java.util.concurrent.TimeUnit;
  22 import java.util.concurrent.TimeoutException;
  23 import org.eclipse.jdt.annotation.NonNull;
  24 import org.opendaylight.mdsal.common.api.CommitInfo;
  25 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  26 import org.opendaylight.mdsal.dom.api.DOMDataTreeCursorAwareTransaction;
  27 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
  28 import org.opendaylight.mdsal.dom.api.DOMDataTreeProducer;
  29 import org.opendaylight.mdsal.dom.api.DOMDataTreeProducerException;
  30 import org.opendaylight.mdsal.dom.api.DOMDataTreeService;
  31 import org.opendaylight.mdsal.dom.api.DOMDataTreeWriteCursor;
  32 import org.opendaylight.yang.gen.v1.tag.opendaylight.org._2017.controller.yang.lowlevel.control.rev170215.ProduceTransactionsInput;
  33 import org.opendaylight.yang.gen.v1.tag.opendaylight.org._2017.controller.yang.lowlevel.control.rev170215.ProduceTransactionsOutput;
  34 import org.opendaylight.yang.gen.v1.tag.opendaylight.org._2017.controller.yang.lowlevel.control.rev170215.ProduceTransactionsOutputBuilder;
  35 import org.opendaylight.yangtools.yang.common.RpcError;
  36 import org.opendaylight.yangtools.yang.common.RpcResult;
  37 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
  38 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  39 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  40 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  41 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
  42 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
  43 import org.slf4j.Logger;
  44 import org.slf4j.LoggerFactory;
  45
  46 public final class ProduceTransactionsHandler extends AbstractTransactionHandler {
  47     private static final Logger LOG = LoggerFactory.getLogger(ProduceTransactionsHandler.class);
  48
  49     private final SettableFuture<RpcResult<ProduceTransactionsOutput>> future = SettableFuture.create();
  50     private final SplittableRandom random = new SplittableRandom();
  51     private final Set<Integer> usedValues = new HashSet<>();
  52     private final DOMDataTreeIdentifier idListItem;
  53     private final DOMDataTreeProducer itemProducer;
  54
  55     private long insertTx = 0;
  56     private long deleteTx = 0;
  57
  58     private ProduceTransactionsHandler(final DOMDataTreeProducer producer, final DOMDataTreeIdentifier idListItem,
  59             final ProduceTransactionsInput input) {
  60         super(input);
  61         this.itemProducer = Preconditions.checkNotNull(producer);
  62         this.idListItem = Preconditions.checkNotNull(idListItem);
  63     }
  64
  65     public static ListenableFuture<RpcResult<ProduceTransactionsOutput>> start(
  66             final DOMDataTreeService domDataTreeService, final ProduceTransactionsInput input) {
  67         final String id = input.getId();
  68         LOG.debug("Filling the item list {} with initial values.", id);
  69
  70         final YangInstanceIdentifier idListWithKey = ID_INT_YID.node(new NodeIdentifierWithPredicates(ID_INT, ID, id));
  71
  72         final DOMDataTreeProducer itemProducer = domDataTreeService.createProducer(
  73             Collections.singleton(new DOMDataTreeIdentifier(LogicalDatastoreType.CONFIGURATION, idListWithKey)));
  74
  75         final DOMDataTreeCursorAwareTransaction tx = itemProducer.createTransaction(false);
  76         final DOMDataTreeWriteCursor cursor =
  77                 tx.createCursor(new DOMDataTreeIdentifier(LogicalDatastoreType.CONFIGURATION, idListWithKey));
  78
  79         final MapNode list = ImmutableNodes.mapNodeBuilder(ITEM).build();
  80         cursor.write(list.getIdentifier(), list);
  81         cursor.close();
  82
  83         try {
  84             tx.commit().get(INIT_TX_TIMEOUT_SECONDS, TimeUnit.SECONDS);
  85         } catch (InterruptedException | ExecutionException | TimeoutException e) {
  86             LOG.warn("Unable to fill the initial item list.", e);
  87             closeProducer(itemProducer);
  88
  89             return Futures.immediateFuture(RpcResultBuilder.<ProduceTransactionsOutput>failed()
  90                 .withError(RpcError.ErrorType.APPLICATION, "Unexpected-exception", e).build());
  91         }
  92
  93         final ProduceTransactionsHandler handler = new ProduceTransactionsHandler(itemProducer,
  94             new DOMDataTreeIdentifier(LogicalDatastoreType.CONFIGURATION, idListWithKey.node(list.getIdentifier())
  95                 .toOptimized()), input);
  96         // It is handler's responsibility to close itemProducer when the work is finished.
  97         handler.doStart();
  98         return handler.future;
  99     }
 100
 101     private static void closeProducer(final DOMDataTreeProducer producer) {
 102         try {
 103             producer.close();
 104         } catch (final DOMDataTreeProducerException exception) {
 105             LOG.warn("Failure while closing producer.", exception);
 106         }
 107     }
 108
 109     @Override
 110     FluentFuture<? extends @NonNull CommitInfo> execWrite(final long txId) {
 111         final int i = random.nextInt(MAX_ITEM + 1);
 112         final DOMDataTreeCursorAwareTransaction tx = itemProducer.createTransaction(false);
 113         final DOMDataTreeWriteCursor cursor = tx.createCursor(idListItem);
 114
 115         final NodeIdentifierWithPredicates entryId = new NodeIdentifierWithPredicates(ITEM, NUMBER, i);
 116         if (usedValues.contains(i)) {
 117             LOG.debug("Deleting item: {}", i);
 118             deleteTx++;
 119             cursor.delete(entryId);
 120             usedValues.remove(i);
 121
 122         } else {
 123             LOG.debug("Inserting item: {}", i);
 124             insertTx++;
 125
 126             final MapEntryNode entry = ImmutableNodes.mapEntryBuilder().withNodeIdentifier(entryId)
 127                     .withChild(ImmutableNodes.leafNode(NUMBER, i)).build();
 128             cursor.write(entryId, entry);
 129             usedValues.add(i);
 130         }
 131
 132         cursor.close();
 133
 134         return tx.commit();
 135     }
 136
 137     @Override
 138     void runFailed(final Throwable cause, final long txId) {
 139         closeProducer(itemProducer);
 140         future.set(RpcResultBuilder.<ProduceTransactionsOutput>failed()
 141             .withError(RpcError.ErrorType.APPLICATION, "Commit failed for tx # " + txId, cause).build());
 142     }
 143
 144     @Override
 145     void runSuccessful(final long allTx) {
 146         closeProducer(itemProducer);
 147         final ProduceTransactionsOutput output = new ProduceTransactionsOutputBuilder()
 148                 .setAllTx(allTx)
 149                 .setInsertTx(insertTx)
 150                 .setDeleteTx(deleteTx)
 151                 .build();
 152         future.set(RpcResultBuilder.<ProduceTransactionsOutput>success()
 153                 .withResult(output).build());
 154     }
 155
 156     @Override
 157     void runTimedOut(final String cause) {
 158         closeProducer(itemProducer);
 159         future.set(RpcResultBuilder.<ProduceTransactionsOutput>failed()
 160             .withError(RpcError.ErrorType.APPLICATION, cause).build());
 161     }
 162 }