Example usage for java.util.function Supplier get

List of usage examples for java.util.function Supplier get

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Introduction

In this page you can find the example usage for java.util.function Supplier get.

Prototype

T get();

Source Link

Document

Gets a result.

Usage

From source file:org.apache.hadoop.hbase.client.AsyncRpcRetryingCaller.java

protected void onError(Throwable error, Supplier<String> errMsg, Consumer<Throwable> updateCachedLocation) {
    error = translateException(error);/*from   w w  w.  j a  va2s  .c o  m*/
    if (tries > startLogErrorsCnt) {
        LOG.warn(errMsg.get() + ", tries = " + tries + ", maxAttempts = " + maxAttempts + ", timeout = "
                + TimeUnit.NANOSECONDS.toMillis(operationTimeoutNs) + " ms, time elapsed = " + elapsedMs()
                + " ms", error);
    }
    RetriesExhaustedException.ThrowableWithExtraContext qt = new RetriesExhaustedException.ThrowableWithExtraContext(
            error, EnvironmentEdgeManager.currentTime(), "");
    exceptions.add(qt);
    if (error instanceof DoNotRetryIOException || tries >= maxAttempts) {
        completeExceptionally();
        return;
    }
    long delayNs;
    if (operationTimeoutNs > 0) {
        long maxDelayNs = remainingTimeNs() - SLEEP_DELTA_NS;
        if (maxDelayNs <= 0) {
            completeExceptionally();
            return;
        }
        delayNs = Math.min(maxDelayNs, getPauseTime(pauseNs, tries - 1));
    } else {
        delayNs = getPauseTime(pauseNs, tries - 1);
    }
    updateCachedLocation.accept(error);
    tries++;
    retryTimer.newTimeout(t -> doCall(), delayNs, TimeUnit.NANOSECONDS);
}

From source file:org.apache.hadoop.hbase.client.AsyncSingleRequestRpcRetryingCaller.java

private void onError(Throwable error, Supplier<String> errMsg, Consumer<Throwable> updateCachedLocation) {
    error = translateException(error);//from  w  ww.j av a2 s  .c  o m
    if (tries > startLogErrorsCnt) {
        LOG.warn(errMsg.get(), error);
    }
    RetriesExhaustedException.ThrowableWithExtraContext qt = new RetriesExhaustedException.ThrowableWithExtraContext(
            error, EnvironmentEdgeManager.currentTime(), "");
    exceptions.add(qt);
    if (error instanceof DoNotRetryIOException || tries >= maxAttempts) {
        completeExceptionally();
        return;
    }
    long delayNs;
    if (operationTimeoutNs > 0) {
        long maxDelayNs = operationTimeoutNs - (System.nanoTime() - startNs);
        if (maxDelayNs <= 0) {
            completeExceptionally();
            return;
        }
        delayNs = Math.min(maxDelayNs, getPauseTime(pauseNs, tries - 1));
    } else {
        delayNs = getPauseTime(pauseNs, tries - 1);
    }
    updateCachedLocation.accept(error);
    tries++;
    retryTimer.newTimeout(new TimerTask() {

        @Override
        public void run(Timeout timeout) throws Exception {
            // always restart from beginning.
            locateThenCall();
        }
    }, delayNs, TimeUnit.NANOSECONDS);
}

From source file:org.apache.hadoop.hive.metastore.PersistenceManagerProvider.java

private static <T> T retry(Supplier<T> s) {
    Exception ex = null;/* w w  w . jav  a 2  s. c  o  m*/
    int myRetryLimit = retryLimit;
    while (myRetryLimit > 0) {
        try {
            return s.get();
        } catch (Exception e) {
            myRetryLimit--;
            boolean retriable = isRetriableException(e);
            if (myRetryLimit > 0 && retriable) {
                LOG.info("Retriable exception while invoking method, retrying. {} attempts left", myRetryLimit,
                        e);
                try {
                    Thread.sleep(retryInterval);
                } catch (InterruptedException ie) {
                    // Restore the interrupted status, since we do not want to catch it.
                    LOG.debug("Interrupted while sleeping before retrying.", ie);
                    Thread.currentThread().interrupt();
                }
                // If we're here, we'll proceed down the next while loop iteration.
            } else {
                // we've reached our limit, throw the last one.
                if (retriable) {
                    LOG.warn("Exception retry limit reached, not retrying any longer.", e);
                } else {
                    LOG.debug("Non-retriable exception.", e);
                }
                ex = e;
            }
        }
    }
    throw new RuntimeException(ex);
}

From source file:org.apache.metron.parsers.ParserRunnerImpl.java

/**
 * Initializes MessageParsers and MessageFilters for sensor types configured in this ParserRunner.  Objects are created
 * using reflection and the MessageParser configure and init methods are called.
 * @param parserConfigSupplier Parser configurations
 *//* w ww  .j  av  a 2s .  co  m*/
private void initializeParsers(Supplier<ParserConfigurations> parserConfigSupplier) {
    LOG.info("Initializing parsers...");
    sensorToParserComponentMap = new HashMap<>();
    for (String sensorType : sensorTypes) {
        if (parserConfigSupplier.get().getSensorParserConfig(sensorType) == null) {
            throw new IllegalStateException(String.format(
                    "Could not initialize parsers.  Cannot find configuration for sensor %s.", sensorType));
        }

        SensorParserConfig parserConfig = parserConfigSupplier.get().getSensorParserConfig(sensorType);

        LOG.info("Creating parser for sensor {} with parser class = {} and filter class = {} ", sensorType,
                parserConfig.getParserClassName(), parserConfig.getFilterClassName());

        // create message parser
        MessageParser<JSONObject> parser = ReflectionUtils.createInstance(parserConfig.getParserClassName());

        // create message filter
        MessageFilter<JSONObject> filter = null;
        parserConfig.getParserConfig().putIfAbsent("stellarContext", stellarContext);
        if (!StringUtils.isEmpty(parserConfig.getFilterClassName())) {
            filter = Filters.get(parserConfig.getFilterClassName(), parserConfig.getParserConfig());
        }

        parser.configure(parserConfig.getParserConfig());
        parser.init();
        sensorToParserComponentMap.put(sensorType, new ParserComponent(parser, filter));
    }
}

From source file:org.apache.metron.profiler.spark.cli.BatchProfilerCLIOptions.java

BatchProfilerCLIOptions(Supplier<Option> optionSupplier) {
    this.option = optionSupplier.get();
}

From source file:org.apache.metron.stellar.common.utils.StellarProcessorUtils.java

public static void runWithArguments(String function, List<Object> arguments, Object expected) {
    Supplier<Stream<Map.Entry<String, Object>>> kvStream = () -> StreamSupport
            .stream(new XRange(arguments.size()), false)
            .map(i -> new AbstractMap.SimpleImmutableEntry<>("var" + i, arguments.get(i)));

    String args = kvStream.get().map(kv -> kv.getKey()).collect(Collectors.joining(","));
    Map<String, Object> variables = kvStream.get()
            .collect(Collectors.toMap(kv -> kv.getKey(), kv -> kv.getValue()));
    String stellarStatement = function + "(" + args + ")";
    String reason = stellarStatement + " != " + expected + " with variables: " + variables;

    if (expected instanceof Double) {
        Assert.assertEquals(reason, (Double) expected, (Double) run(stellarStatement, variables), 1e-6);
    } else {//from  w ww .  j a  v  a2s.co  m
        Assert.assertEquals(reason, expected, run(stellarStatement, variables));
    }
}

From source file:org.apache.nifi.cluster.coordination.node.NodeClusterCoordinator.java

private NodeIdentifier waitForNodeIdentifier(final Supplier<NodeIdentifier> fetchNodeId) {
    NodeIdentifier localNodeId = null;//from w  ww.  jav  a 2  s  .c  o  m
    while (localNodeId == null) {
        localNodeId = fetchNodeId.get();
        if (localNodeId == null) {
            if (closed) {
                return null;
            }

            try {
                Thread.sleep(100L);
            } catch (final InterruptedException ie) {
                Thread.currentThread().interrupt();
                return null;
            }
        }
    }

    return localNodeId;
}

From source file:org.apache.nifi.controller.scheduling.ProcessorLifecycleIT.java

private void assertCondition(final Supplier<Boolean> supplier, final long delayToleranceMillis) {
    final long startTime = System.currentTimeMillis();
    while (((System.currentTimeMillis() - startTime) < delayToleranceMillis) && !supplier.get()) {
        try {//from   ww  w .  j  av a 2  s.c o m
            Thread.sleep(50);
        } catch (InterruptedException ex) {
            Thread.interrupted();
            break;
        }
    }
    assertTrue(supplier.get());
}

From source file:org.apache.nifi.minifi.bootstrap.configuration.ingestors.FileChangeIngestor.java

@Override
public void initialize(Properties properties, ConfigurationFileHolder configurationFileHolder,
        ConfigurationChangeNotifier configurationChangeNotifier) {
    final String rawPath = properties.getProperty(CONFIG_FILE_PATH_KEY);
    final String rawPollingDuration = properties.getProperty(POLLING_PERIOD_INTERVAL_KEY,
            Long.toString(DEFAULT_POLLING_PERIOD_INTERVAL));

    if (rawPath == null || rawPath.isEmpty()) {
        throw new IllegalArgumentException(
                "Property, " + CONFIG_FILE_PATH_KEY + ", for the path of the config file must be specified.");
    }/*from  w ww.  j a v a  2 s  .c o  m*/

    try {
        setConfigFilePath(Paths.get(rawPath));
        setPollingPeriod(Long.parseLong(rawPollingDuration), DEFAULT_POLLING_PERIOD_UNIT);
        setWatchService(initializeWatcher(configFilePath));
    } catch (Exception e) {
        throw new IllegalStateException("Could not successfully initialize file change notifier.", e);
    }

    this.configurationChangeNotifier = configurationChangeNotifier;

    final String differentiatorName = properties.getProperty(DIFFERENTIATOR_KEY);

    if (differentiatorName != null && !differentiatorName.isEmpty()) {
        Supplier<Differentiator<InputStream>> differentiatorSupplier = DIFFERENTIATOR_CONSTRUCTOR_MAP
                .get(differentiatorName);
        if (differentiatorSupplier == null) {
            throw new IllegalArgumentException(
                    "Property, " + DIFFERENTIATOR_KEY + ", has value " + differentiatorName + " which does not "
                            + "correspond to any in the PullHttpChangeIngestor Map:"
                            + DIFFERENTIATOR_CONSTRUCTOR_MAP.keySet());
        }
        differentiator = differentiatorSupplier.get();
    } else {
        differentiator = WholeConfigDifferentiator.getInputStreamDifferentiator();
    }
    differentiator.initialize(properties, configurationFileHolder);
}

From source file:org.apache.nifi.minifi.bootstrap.configuration.ingestors.RestChangeIngestor.java

@Override
public void initialize(Properties properties, ConfigurationFileHolder configurationFileHolder,
        ConfigurationChangeNotifier configurationChangeNotifier) {
    logger.info("Initializing");

    final String differentiatorName = properties.getProperty(DIFFERENTIATOR_KEY);

    if (differentiatorName != null && !differentiatorName.isEmpty()) {
        Supplier<Differentiator<InputStream>> differentiatorSupplier = DIFFERENTIATOR_CONSTRUCTOR_MAP
                .get(differentiatorName);
        if (differentiatorSupplier == null) {
            throw new IllegalArgumentException(
                    "Property, " + DIFFERENTIATOR_KEY + ", has value " + differentiatorName + " which does not "
                            + "correspond to any in the PullHttpChangeIngestor Map:"
                            + DIFFERENTIATOR_CONSTRUCTOR_MAP.keySet());
        }/*from  ww  w.  java 2 s .  com*/
        differentiator = differentiatorSupplier.get();
    } else {
        differentiator = WholeConfigDifferentiator.getInputStreamDifferentiator();
    }
    differentiator.initialize(properties, configurationFileHolder);

    // create the secure connector if keystore location is specified
    if (properties.getProperty(KEYSTORE_LOCATION_KEY) != null) {
        createSecureConnector(properties);
    } else {
        // create the unsecure connector otherwise
        createConnector(properties);
    }

    this.configurationChangeNotifier = configurationChangeNotifier;

    HandlerCollection handlerCollection = new HandlerCollection(true);
    handlerCollection.addHandler(new JettyHandler());
    jetty.setHandler(handlerCollection);
}