Java Code Examples for org.agrona.concurrent.status.CountersReader#forEach()

private int neighborsCounterId(final String name)
{
    final CountersReader countersReader = clients.get(name).countersReader();
    final MutableInteger id = new MutableInteger(NULL_VALUE);

    countersReader.forEach(
        (counterId, typeId, keyBuffer, label) ->
        {
            if (label.startsWith("Resolver neighbors"))
            {
                id.value = counterId;
            }
        });

    return id.value;
}
 

private int cacheEntriesCounterId(final String name)
{
    final CountersReader countersReader = clients.get(name).countersReader();
    final MutableInteger id = new MutableInteger(NULL_VALUE);

    countersReader.forEach(
        (counterId, typeId, keyBuffer, label) ->
        {
            if (label.startsWith("Resolver cache entries"))
            {
                id.value = counterId;
            }
        });

    return id.value;
}
 

public static boolean nextBackupQueryDeadlineMs(final ClusterMarkFile markFile, final long timeMs)
{
    final String aeronDirectoryName = markFile.decoder().aeronDirectory();
    final MutableBoolean result = new MutableBoolean(false);

    try (Aeron aeron = Aeron.connect(new Aeron.Context().aeronDirectoryName(aeronDirectoryName)))
    {
        final CountersReader countersReader = aeron.countersReader();

        countersReader.forEach(
            (counterId, typeId, keyBuffer, label) ->
            {
                if (ClusterBackup.QUERY_DEADLINE_TYPE_ID == typeId)
                {
                    final AtomicCounter atomicCounter = new AtomicCounter(
                        countersReader.valuesBuffer(), counterId, null);

                    atomicCounter.setOrdered(timeMs);
                    result.value = true;
                }
            });
    }

    return result.value;
}
 

private static void printOutput(final CncFileReader cncFileReader, final CounterFilter counterFilter)
{
    final SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");

    System.out.print(dateFormat.format(new Date()));
    System.out.println(
        " - Aeron Stat (CnC v" + cncFileReader.semanticVersion() + ")" +
        ", pid " + SystemUtil.getPid() +
        ", heartbeat age " + cncFileReader.driverHeartbeatAgeMs() + "ms");
    System.out.println("======================================================================");

    final CountersReader counters = cncFileReader.countersReader();

    counters.forEach(
        (counterId, typeId, keyBuffer, label) ->
        {
            if (counterFilter.filter(typeId, keyBuffer))
            {
                final long value = counters.getCounterValue(counterId);
                System.out.format("%3d: %,20d - %s%n", counterId, value, label);
            }
        }
    );

    System.out.println("--");
}
 

/**
 * Return the controllable idle strategy {@link StatusIndicator}.
 *
 * @param countersReader that holds the status indicator.
 * @return status indicator to use or null if not found.
 */
public static StatusIndicator controllableIdleStrategy(final CountersReader countersReader)
{
    StatusIndicator statusIndicator = null;
    final MutableInteger id = new MutableInteger(-1);

    countersReader.forEach(
        (counterId, label) ->
        {
            if (counterId == SystemCounterDescriptor.CONTROLLABLE_IDLE_STRATEGY.id() &&
                label.equals(SystemCounterDescriptor.CONTROLLABLE_IDLE_STRATEGY.label()))
            {
                id.value = counterId;
            }
        });

    if (Aeron.NULL_VALUE != id.value)
    {
        statusIndicator = new UnsafeBufferStatusIndicator(countersReader.valuesBuffer(), id.value);
    }

    return statusIndicator;
}
 

/**
 * Return the read-only status indicator for the given send channel URI.
 *
 * @param countersReader that holds the status indicator.
 * @param channel        for the send channel.
 * @return read-only status indicator that can be used to query the status of the send channel or null
 * @see ChannelEndpointStatus for status values and indications.
 */
public static StatusIndicatorReader sendChannelStatus(final CountersReader countersReader, final String channel)
{
    StatusIndicatorReader statusReader = null;
    final MutableInteger id = new MutableInteger(-1);

    countersReader.forEach(
        (counterId, typeId, keyBuffer, label) ->
        {
            if (typeId == SendChannelStatus.SEND_CHANNEL_STATUS_TYPE_ID)
            {
                if (channel.startsWith(keyBuffer.getStringAscii(ChannelEndpointStatus.CHANNEL_OFFSET)))
                {
                    id.value = counterId;
                }
            }
        });

    if (Aeron.NULL_VALUE != id.value)
    {
        statusReader = new UnsafeBufferStatusIndicator(countersReader.valuesBuffer(), id.value);
    }

    return statusReader;
}
 

/**
 * Return the read-only status indicator for the given receive channel URI.
 *
 * @param countersReader that holds the status indicator.
 * @param channel        for the receive channel.
 * @return read-only status indicator that can be used to query the status of the receive channel or null.
 * @see ChannelEndpointStatus for status values and indications.
 */
public static StatusIndicatorReader receiveChannelStatus(final CountersReader countersReader, final String channel)
{
    StatusIndicatorReader statusReader = null;
    final MutableInteger id = new MutableInteger(-1);

    countersReader.forEach(
        (counterId, typeId, keyBuffer, label) ->
        {
            if (typeId == ReceiveChannelStatus.RECEIVE_CHANNEL_STATUS_TYPE_ID)
            {
                if (channel.startsWith(keyBuffer.getStringAscii(ChannelEndpointStatus.CHANNEL_OFFSET)))
                {
                    id.value = counterId;
                }
            }
        });

    if (Aeron.NULL_VALUE != id.value)
    {
        statusReader = new UnsafeBufferStatusIndicator(countersReader.valuesBuffer(), id.value);
    }

    return statusReader;
}
 

public static IntHashSet lookupCounterIds(
    final FixCountersId counterTypeId, final CountersReader countersReader)
{
    final int requiredTypeId = counterTypeId.id();
    final IntHashSet counterIds = new IntHashSet();
    countersReader.forEach((counterId, typeId, keyBuffer, label) ->
    {
        if (typeId == requiredTypeId)
        {
            counterIds.add(counterId);
        }
    });
    return counterIds;
}
 

/**
 * Print out the values from {@link #countersReader()} which can be useful for debugging.
 *
 * @param out to where the counters get printed.
 */
public void printCounters(final PrintStream out)
{
    final CountersReader counters = countersReader();
    counters.forEach((value, id, label) -> out.format("%3d: %,20d - %s%n", id, value, label));
}