Examples with SlidingWindowPolicy com.hazelcast.jet.core.SlidingWindowPolicy used on opensource projects

Example 1 with SlidingWindowPolicy

use of com.hazelcast.jet.core.SlidingWindowPolicy in project hazelcast-jet by hazelcast.

the class SlidingWindowPTest method before.

@Before
public void before() {
    SlidingWindowPolicy windowDef = slidingWinPolicy(4, 1);
    AggregateOperation1<Entry<?, Long>, LongAccumulator, Long> operation = AggregateOperation.withCreate(LongAccumulator::new).andAccumulate((LongAccumulator acc, Entry<?, Long> item) -> acc.add(item.getValue())).andCombine(LongAccumulator::add).andDeduct(hasDeduct ? LongAccumulator::subtract : null).andFinish(LongAccumulator::get);
    DistributedFunction<?, Long> keyFn = t -> KEY;
    DistributedToLongFunction<Entry<Long, Long>> timestampFn = Entry::getKey;
    DistributedSupplier<Processor> procSupplier = singleStageProcessor ? aggregateToSlidingWindowP(singletonList(keyFn), singletonList(timestampFn), TimestampKind.EVENT, windowDef, operation, TimestampedEntry::new) : combineToSlidingWindowP(windowDef, operation, TimestampedEntry::new);
    // new supplier to save the last supplied instance
    supplier = () -> lastSuppliedProcessor = (SlidingWindowP) procSupplier.get();
}

Example 2 with SlidingWindowPolicy

use of com.hazelcast.jet.core.SlidingWindowPolicy in project hazelcast-jet by hazelcast.

the class SlidingWindowP_twoStageSnapshotTest method before.

@Before
public void before() {
    SlidingWindowPolicy windowDef = slidingWinPolicy(4, 1);
    AggregateOperation1<Entry<?, Long>, LongAccumulator, Long> aggrOp = AggregateOperation.withCreate(LongAccumulator::new).andAccumulate((LongAccumulator acc, Entry<?, Long> item) -> acc.add(item.getValue())).andCombine(LongAccumulator::add).andDeduct(LongAccumulator::subtract).andFinish(LongAccumulator::get);
    DistributedSupplier<Processor> procSupplier1 = Processors.accumulateByFrameP(singletonList((DistributedFunction<? super Entry<Long, Long>, ?>) t -> KEY), singletonList((DistributedToLongFunction<? super Entry<Long, Long>>) Entry::getKey), TimestampKind.EVENT, windowDef, ((AggregateOperation1<? super Entry<Long, Long>, LongAccumulator, ?>) aggrOp).withFinishFn(identity()));
    DistributedSupplier<Processor> procSupplier2 = combineToSlidingWindowP(windowDef, aggrOp, TimestampedEntry::new);
    // new supplier to save the last supplied instance
    stage1Supplier = () -> lastSuppliedStage1Processor = (SlidingWindowP<?, ?, ?, ?>) procSupplier1.get();
    stage2Supplier = () -> lastSuppliedStage2Processor = (SlidingWindowP<?, ?, ?, ?>) procSupplier2.get();
}

Example 3 with SlidingWindowPolicy

use of com.hazelcast.jet.core.SlidingWindowPolicy in project hazelcast-jet by hazelcast.

the class WindowGroupTransform method addSlidingWindowTwoStage.

// ---------       ---------
// | source0 | ... | sourceN |
// ---------       ---------
// |               |
// local           local
// partitioned     partitioned
// v               v
// --------------------
// | accumulateByFrameP |
// --------------------
// |
// distributed
// partitioned
// v
// -------------------------
// | combineToSlidingWindowP |
// -------------------------
private void addSlidingWindowTwoStage(Planner p, SlidingWindowDef wDef) {
    String namePrefix = p.uniqueVertexName(name(), "-step");
    SlidingWindowPolicy winPolicy = wDef.toSlidingWindowPolicy();
    Vertex v1 = p.dag.newVertex(namePrefix + '1', accumulateByFrameP(keyFns, nCopies(keyFns.size(), (DistributedToLongFunction<JetEvent>) JetEvent::timestamp), TimestampKind.EVENT, winPolicy, aggrOp));
    v1.localParallelism(localParallelism());
    PlannerVertex pv2 = p.addVertex(this, namePrefix + '2', localParallelism(), combineToSlidingWindowP(winPolicy, aggrOp, mapToOutputFn));
    p.addEdges(this, v1, (e, ord) -> e.partitioned(keyFns.get(ord), HASH_CODE));
    p.dag.edge(between(v1, pv2.v).distributed().partitioned(entryKey()));
}

Example 4 with SlidingWindowPolicy

use of com.hazelcast.jet.core.SlidingWindowPolicy in project hazelcast-jet-reference-manual by hazelcast.

the class StockExchangeCoreApi method buildDag.

static DAG buildDag() {
    // tag::s1[]
    DistributedToLongFunction<? super Trade> timestampFn = Trade::timestamp;
    DistributedFunction<? super Trade, ?> keyFn = Trade::productId;
    SlidingWindowPolicy winPolicy = slidingWinPolicy(SLIDING_WINDOW_LENGTH_MILLIS, SLIDE_STEP_MILLIS);
    DAG dag = new DAG();
    Vertex tradeSource = dag.newVertex("trade-source", SourceProcessors.<Trade, Long, Trade>streamMapP(TRADES_MAP_NAME, // <1>
    alwaysTrue(), // <1>
    EventJournalMapEvent::getNewValue, // <2>
    JournalInitialPosition.START_FROM_OLDEST, wmGenParams(// <3>
    timestampFn, // <4>
    limitingLag(SECONDS.toMillis(3)), // <5>
    emitByFrame(winPolicy), // <6>
    SECONDS.toMillis(3))));
    Vertex slidingStage1 = dag.newVertex("sliding-stage-1", Processors.accumulateByFrameP(singletonList(keyFn), singletonList(timestampFn), TimestampKind.EVENT, winPolicy, counting()));
    Vertex slidingStage2 = dag.newVertex("sliding-stage-2", Processors.combineToSlidingWindowP(winPolicy, counting(), TimestampedEntry::new));
    Vertex formatOutput = dag.newVertex("format-output", mapUsingContextP(ContextFactory.withCreateFn(x -> DateTimeFormatter.ofPattern("HH:mm:ss.SSS")), (DateTimeFormatter timeFormat, TimestampedEntry<String, Long> tse) -> String.format("%s %5s %4d", timeFormat.format(Instant.ofEpochMilli(tse.getTimestamp()).atZone(ZoneId.systemDefault())), tse.getKey(), tse.getValue())));
    Vertex sink = dag.newVertex("sink", SinkProcessors.writeFileP(OUTPUT_DIR_NAME));
    tradeSource.localParallelism(1);
    return dag.edge(between(tradeSource, slidingStage1).partitioned(keyFn, HASH_CODE)).edge(between(slidingStage1, slidingStage2).partitioned(entryKey(), HASH_CODE).distributed()).edge(between(slidingStage2, formatOutput).isolated()).edge(between(formatOutput, sink));
// end::s1[]
}

Example 5 with SlidingWindowPolicy

use of com.hazelcast.jet.core.SlidingWindowPolicy in project hazelcast by hazelcast.

the class SlidingWindow method windowPolicyProvider.

public final FunctionEx<ExpressionEvalContext, SlidingWindowPolicy> windowPolicyProvider() {
    QueryParameterMetadata parameterMetadata = ((HazelcastRelOptCluster) getCluster()).getParameterMetadata();
    RexToExpressionVisitor visitor = new RexToExpressionVisitor(FAILING_FIELD_TYPE_PROVIDER, parameterMetadata);
    if (operator() == HazelcastSqlOperatorTable.TUMBLE) {
        Expression<?> windowSizeExpression = operand(2).accept(visitor);
        return context -> tumblingWinPolicy(WindowUtils.extractMillis(windowSizeExpression, context));
    } else if (operator() == HazelcastSqlOperatorTable.HOP) {
        Expression<?> windowSizeExpression = operand(2).accept(visitor);
        Expression<?> slideSizeExpression = operand(3).accept(visitor);
        return context -> slidingWinPolicy(WindowUtils.extractMillis(windowSizeExpression, context), WindowUtils.extractMillis(slideSizeExpression, context));
    } else {
        throw new IllegalArgumentException();
    }
}