Examples with IntSupplier java.util.function.IntSupplier used on opensource projects

Example 16 with IntSupplier

use of java.util.function.IntSupplier in project alf.io by alfio-event.

the class WaitingQueueManager method distributeAvailableSeats.

private Stream<Triple<WaitingQueueSubscription, TicketReservationWithOptionalCodeModification, ZonedDateTime>> distributeAvailableSeats(Event event, Ticket.TicketStatus status, IntSupplier availableSeatSupplier) {
    int availableSeats = availableSeatSupplier.getAsInt();
    int eventId = event.getId();
    log.debug("processing {} subscribers from waiting list", availableSeats);
    List<TicketCategory> unboundedCategories = ticketCategoryRepository.findUnboundedOrderByExpirationDesc(eventId);
    Iterator<Ticket> tickets = ticketRepository.selectWaitingTicketsForUpdate(eventId, status.name(), availableSeats).stream().filter(t -> t.getCategoryId() != null || !unboundedCategories.isEmpty()).iterator();
    int expirationTimeout = configurationManager.getFor(WAITING_QUEUE_RESERVATION_TIMEOUT, ConfigurationLevel.event(event)).getValueAsIntOrDefault(4);
    ZonedDateTime expiration = event.now(clockProvider).plusHours(expirationTimeout).with(WorkingDaysAdjusters.defaultWorkingDays());
    if (!tickets.hasNext()) {
        log.warn("Unable to assign tickets, returning an empty stream");
        return Stream.empty();
    }
    return waitingQueueRepository.loadWaiting(eventId, availableSeats).stream().map(wq -> Pair.of(wq, tickets.next())).map(pair -> {
        TicketReservationModification ticketReservation = new TicketReservationModification();
        ticketReservation.setQuantity(1);
        Integer categoryId = Optional.ofNullable(pair.getValue().getCategoryId()).orElseGet(() -> findBestCategory(unboundedCategories, pair.getKey()).orElseThrow(RuntimeException::new).getId());
        ticketReservation.setTicketCategoryId(categoryId);
        return Pair.of(pair.getLeft(), new TicketReservationWithOptionalCodeModification(ticketReservation, Optional.empty()));
    }).map(pair -> Triple.of(pair.getKey(), pair.getValue(), expiration));
}

Example 17 with IntSupplier

use of java.util.function.IntSupplier in project ambry by linkedin.

the class Utils method partitionList.

/**
 * Partition the input list into a List of smaller sublists, each one limited to the specified batch size. This method
 * copy elements, so changes to the so changes to the original list will be reflected in the returned list.
 * Method inspired by the Guava utility Lists.partition(List<T> list, int size).
 * @param inputList the input list to partition.
 * @param batchSize the maximum size of the returned sublists.
 * @return the partitioned list of sublists.
 */
public static <T> List<List<T>> partitionList(List<T> inputList, int batchSize) {
    Objects.requireNonNull(inputList, "Input list cannot be null");
    if (batchSize < 1) {
        throw new IllegalArgumentException("Invalid batchSize: " + batchSize);
    }
    IntSupplier numBatches = () -> (inputList.size() + batchSize - 1) / batchSize;
    IntFunction<List<T>> batchFetcher = index -> {
        int start = index * batchSize;
        int end = Math.min(start + batchSize, inputList.size());
        return inputList.subList(start, end);
    };
    return new ListView<>(numBatches, batchFetcher);
}

Example 18 with IntSupplier

use of java.util.function.IntSupplier in project aeron by real-logic.

the class SendSelectReceiveUdpPing method run.

private void run() throws IOException {
    final Histogram histogram = new Histogram(TimeUnit.SECONDS.toNanos(10), 3);
    final ByteBuffer buffer = ByteBuffer.allocateDirect(Configuration.MTU_LENGTH_DEFAULT);
    final DatagramChannel receiveChannel = DatagramChannel.open();
    Common.init(receiveChannel);
    receiveChannel.bind(new InetSocketAddress("localhost", Common.PONG_PORT));
    final DatagramChannel sendChannel = DatagramChannel.open();
    Common.init(sendChannel);
    final Selector selector = Selector.open();
    final IntSupplier handler = () -> {
        try {
            buffer.clear();
            receiveChannel.receive(buffer);
            final long receivedSequenceNumber = buffer.getLong(0);
            final long timestampNs = buffer.getLong(SIZE_OF_LONG);
            if (receivedSequenceNumber != sequenceNumber) {
                throw new IllegalStateException("data Loss:" + sequenceNumber + " to " + receivedSequenceNumber);
            }
            final long durationNs = System.nanoTime() - timestampNs;
            histogram.recordValue(durationNs);
        } catch (final IOException ex) {
            ex.printStackTrace();
        }
        return 1;
    };
    receiveChannel.register(selector, OP_READ, handler);
    final AtomicBoolean running = new AtomicBoolean(true);
    SigInt.register(() -> running.set(false));
    while (running.get()) {
        measureRoundTrip(histogram, SEND_ADDRESS, buffer, sendChannel, selector, running);
        histogram.reset();
        System.gc();
        LockSupport.parkNanos(1000 * 1000 * 1000);
    }
}

Example 19 with IntSupplier

use of java.util.function.IntSupplier in project DrivenByMoss by git-moss.

the class AbstractControllerSetup method addButton.

/**
 * Create a hardware button proxy, bind a trigger command to it and bind it to the trigger bind
 * type retrieved from {@link #getTriggerBindType(ButtonID)}.
 *
 * @param surface The control surface
 * @param buttonID The ID of the button (for later access)
 * @param label The label of the button
 * @param supplier Callback for retrieving the state of the light
 * @param midiInputChannel The MIDI input channel
 * @param midiOutputChannel The MIDI output channel
 * @param midiControl The MIDI CC or note
 * @param value The specific value of the control to bind to
 * @param command The command to bind
 * @param hasLight True create and add a light
 * @param colorIds The color IDs to map to the states
 */
protected void addButton(final S surface, final ButtonID buttonID, final String label, final TriggerCommand command, final int midiInputChannel, final int midiOutputChannel, final int midiControl, final int value, final boolean hasLight, final IntSupplier supplier, final String... colorIds) {
    final IHwButton button = surface.createButton(buttonID, label);
    button.bind(command);
    if (midiControl < 0)
        return;
    final IMidiInput midiInput = surface.getMidiInput();
    final BindType triggerBindType = this.getTriggerBindType(buttonID);
    if (value == -1)
        button.bind(midiInput, triggerBindType, midiInputChannel, midiControl);
    else
        button.bind(midiInput, triggerBindType, midiInputChannel, midiControl, value);
    if (hasLight) {
        final IntSupplier intSupplier = () -> button.isPressed() ? 1 : 0;
        final IntSupplier supp = supplier == null ? intSupplier : supplier;
        this.addLight(surface, null, buttonID, button, midiOutputChannel, midiControl, supp, colorIds);
    }
}

Example 20 with IntSupplier

use of java.util.function.IntSupplier in project Java-Tutorial by gpcodervn.

the class SupplierExample3 method main.

public static void main(String[] args) {
    BooleanSupplier bs = NumberUtils::getBooleanValue;
    System.out.println("Boolean Value: " + bs.getAsBoolean());
    IntSupplier dbs = NumberUtils::getIntValue;
    System.out.println("Integer Value: " + dbs.getAsInt());
    LongSupplier ls = NumberUtils::getLongValue;
    System.out.println("Long Value: " + ls.getAsLong());
    DoubleSupplier ds = NumberUtils::getDoubleValue;
    System.out.println("Double Value: " + ds.getAsDouble());
}