Example usage for java.util.concurrent ThreadLocalRandom current

Introduction

In this page you can find the example usage for java.util.concurrent ThreadLocalRandom current.

Prototype

public static ThreadLocalRandom current() 

Source Link

Document

Returns the current thread's ThreadLocalRandom .

Usage

From source file:com.jql.gcmccsmock.GCMMessageHandler.java

@Override
protected Stanza executeMessageLogic(MessageStanza stanza, ServerRuntimeContext serverRuntimeContext,
        SessionContext sessionContext) {

    try {/*from  w  ww .ja  v a 2 s .c o  m*/
        String incomingMessage = stanza.getInnerElements().get(0).getSingleInnerText().getText();
        logger.info("Received message. stanza.gcm={}", incomingMessage);
        Entity from = extractSenderJID(stanza, sessionContext);

        MessageStanzaType type = stanza.getMessageType();
        if (!MessageStanzaType.NORMAL.equals(type))
            return null; // no immediate response

        GCMMessage gcmMessage = GCMMessage.fromStanza(stanza);
        JSONObject jsonObject = gcmMessage.getJsonObject();

        if (jsonObject.get(JSON_TO).equals(badRegistrationTag)) {
            Stanza outboundStanza = createNackBadRegIdMessageStanza(stanza, jsonObject);
            MessageRelayJobImpl messageRelayJob = new MessageRelayJobImpl(
                    ThreadLocalRandom.current().nextLong(ACK_DELAY_MS), from, outboundStanza,
                    serverRuntimeContext);
            serviceContext.getMessageRelayManager().addJob(messageRelayJob);
            return null;
        }

        Stanza outboundStanza = createAckMessageStanza(stanza, jsonObject);
        MessageRelayJobImpl messageRelayJob = new MessageRelayJobImpl(
                ThreadLocalRandom.current().nextLong(ACK_DELAY_MS), from, outboundStanza, serverRuntimeContext);
        serviceContext.getMessageRelayManager().addJob(messageRelayJob);

        outboundStanza = createDeliveryReceiptMessageStanza(stanza, jsonObject);
        messageRelayJob = new MessageRelayJobImpl(
                ThreadLocalRandom.current().nextLong(DELIVERY_RECEIPT_DELAY_MS), from, outboundStanza,
                serverRuntimeContext, (String) jsonObject.get(JSON_TO), incomingMessage);
        serviceContext.getMessageRelayManager().addJob(messageRelayJob);

        // draining control message test
        if (jsonObject.get(JSON_TO).equals(drainingTag)) {
            outboundStanza = createDrainingMessageStanza(stanza, jsonObject);
            messageRelayJob = new MessageRelayJobImpl(500, from, outboundStanza, serverRuntimeContext,
                    (String) jsonObject.get(JSON_TO), incomingMessage);
            serviceContext.getMessageRelayManager().addJob(messageRelayJob);
        }
    } catch (Exception ex) {
        logger.error("got exception: ", ex);
    }
    return null;
}

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From source file:org.wso2.carbon.sample.isanalyticsclient.Client.java

private static Object[] getEventDataObject() {
    String[] usernames = { "admin", "thisaru", "LordVoldemort", "ProfMoriyarty", "Menaka", "Ruwangika",
            "Irunika", "Ninada", "Tharinda", "Dilanka", "Namodaya", "StrongArm", "Karl", "Neil", "Aravinda",
            "Sanath", "Mahela", "Sangakkara", "Muvindu", "Shihan", "Kasun", "Sanuka", "Indrachapa", "Chithral",
            "Shehan" };

    String[] localUsernames = { "admin", "sam", "TomRiddle", "TheOne", "Mana", "Ru", "Iru", "Nin", "Thari",
            "Dila", "Namo", "Gun", "Scientist", "Atheist", "Silva", "Jayasooriya", "Jayawardana", "Sanga",
            "Binoy", "Bennet", "Kalhara", "Wicky", "Chapa", "Chitty", "Kaushalya" };

    String[] userRoles = { "admin", "user", "admin, user", "restricted", "user, restricted" };

    String[] ipAddresses = { "152.101.145.121", "8.89.153.229", "167.72.51.148", "35.155.233.154",
            "165.211.184.166", "150.88.129.200", "164.28.204.222", "75.177.7.40", "66.124.5.23",
            "254.107.47.83", "213.138.26.248", "185.168.135.92", "45.1.8.19", "30.47.231.32", "65.208.246.181",
            "98.22.73.94", "120.31.229.94", "75.238.156.179", "140.247.144.183", "149.203.141.172",
            "175.225.166.25", "114.85.215.55", "110.231.12.1", "194.105.181.134", "97.42.32.147" };

    String[] eventTypes = { "step", "overall", "test-type" };
    String[] userStoreDomains = { "user-store-1", "default-store", "testing-user-store" };
    String[] tenantDomains = { "tenant-domain-1", "custom-tenant", "sample-tenant" };
    String[] inboundAuthTypes = { "inbound-auth-1", "sample-inbound-auth", "custom-inbound-auth" };
    String[] serviceProviders = { "travelocity.com", "harrypotter.com", "sherlock.org" };
    String[] authenticationSteps = { "general", "2-step-auth", "SAML" };
    String[] identityProviders = { "google.com", "facebook.com", "amazon.com" };
    String[] stepAuthenticators = { "email", "totp", "motp" };
    String[] identityProviderTypes = { "LOCAL", "FEDERATED" };

    String contextId, eventId, eventType, username, localUsername, userStoreDomain, tenantDomain, remoteIp,
            inboundAuth, serviceProvider, rolesCommaSeparated, authenticationStep, identityProvider,
            stepAuthenticator, identityProviderType;
    Boolean authenticationSuccess, rememberMeEnabled, forceAuthEnabled, passiveAuthEnabled, authStepSuccess,
            isFirstLogin;/*from w w  w  .  ja  v  a2s. c o  m*/
    int index = ThreadLocalRandom.current().nextInt(0, 25);
    contextId = UUID.randomUUID().toString();
    eventId = UUID.randomUUID().toString();
    eventType = eventTypes[index % 3];
    authenticationSuccess = ThreadLocalRandom.current().nextBoolean();
    username = usernames[index];
    localUsername = localUsernames[index];
    userStoreDomain = userStoreDomains[index % 3];
    tenantDomain = tenantDomains[index % 3];
    inboundAuth = inboundAuthTypes[index % 3];
    remoteIp = ipAddresses[index];
    serviceProvider = serviceProviders[index % 3];
    rememberMeEnabled = ThreadLocalRandom.current().nextBoolean();
    forceAuthEnabled = ThreadLocalRandom.current().nextBoolean();
    passiveAuthEnabled = ThreadLocalRandom.current().nextBoolean();
    rolesCommaSeparated = userRoles[index % 5];
    authenticationStep = authenticationSteps[index % 3];
    identityProvider = identityProviders[index % 3];
    authStepSuccess = authenticationSuccess;
    stepAuthenticator = stepAuthenticators[index % 3];
    identityProviderType = identityProviderTypes[index % 2];
    isFirstLogin = ThreadLocalRandom.current().nextBoolean();
    Long timestamp = new Timestamp(System.currentTimeMillis()).getTime();

    return (new Object[] { contextId, eventId, eventType, authenticationSuccess, username, localUsername,
            userStoreDomain, tenantDomain, remoteIp, "N/A", inboundAuth, serviceProvider, rememberMeEnabled,
            forceAuthEnabled, passiveAuthEnabled, rolesCommaSeparated, authenticationStep, identityProvider,
            authStepSuccess, stepAuthenticator, isFirstLogin, identityProviderType, timestamp });
}

---

From source file:org.apache.drill.exec.planner.fragment.Wrapper.java

public void assignEndpoints(Collection<DrillbitEndpoint> allPossible) throws PhysicalOperatorSetupException {
    Preconditions.checkState(!endpointsAssigned);

    endpointsAssigned = true;/*from w  ww  .j a  v  a  2  s .c o m*/

    List<EndpointAffinity> values = Lists.newArrayList();
    values.addAll(endpointAffinity.values());

    if (values.size() == 0) {
        List<DrillbitEndpoint> all = Lists.newArrayList(allPossible);
        final int div = allPossible.size();
        int start = ThreadLocalRandom.current().nextInt(div);
        // round robin with random start.
        for (int i = start; i < start + width; i++) {
            Preconditions.checkNotNull(all.get(i % div));
            endpoints.add(all.get(i % div));
        }
    } else {
        // get nodes with highest affinity.
        Collections.sort(values);
        values = Lists.reverse(values);
        for (int i = 0; i < width; i++) {
            Preconditions.checkNotNull(values.get(i % values.size()).getEndpoint());
            endpoints.add(values.get(i % values.size()).getEndpoint());
        }
    }

    // Set scan and store endpoints.
    AssignEndpointsToScanAndStore visitor = new AssignEndpointsToScanAndStore();
    node.getRoot().accept(visitor, endpoints);

    // Set the endpoints for this (one at most) sending exchange.
    if (node.getSendingExchange() != null) {
        node.getSendingExchange().setupSenders(majorFragmentId, endpoints);
    }

    // Set the endpoints for each incoming exchange within this fragment.
    for (ExchangeFragmentPair e : node.getReceivingExchangePairs()) {
        e.getExchange().setupReceivers(majorFragmentId, endpoints);
    }
}

---

From source file:org.apache.bookkeeper.common.conf.ConfigKeyTest.java

@Test
public void testGetShort() {
    String keyName = runtime.getMethodName();
    short defaultValue = (short) ThreadLocalRandom.current().nextInt(10000);
    ConfigKey key = ConfigKey.builder(keyName).required(true).type(Type.SHORT).defaultValue(defaultValue)
            .build();//from w  w  w.jav a 2s.c  om

    Configuration conf = new ConcurrentConfiguration();

    // get default value
    assertEquals(defaultValue, key.getShort(conf));
    assertEquals(defaultValue, key.get(conf));

    // set value
    short newValue = (short) (defaultValue * 2);
    key.set(conf, newValue);
    assertEquals(newValue, key.getShort(conf));
    assertEquals(newValue, key.get(conf));
}

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From source file:com.linkedin.pinot.core.segment.index.creator.SegmentGenerationWithTimeColumnTest.java

private Object getRandomValueForTimeColumn(boolean isSimpleDate) {
    long randomMs = ThreadLocalRandom.current().nextLong(startTime);
    long dateColVal = randomMs;
    Object result;/*  w  w  w  .  j a va 2  s  .c  om*/
    if (isSimpleDate) {
        DateTime dateTime = new DateTime(randomMs);
        LocalDateTime localDateTime = dateTime.toLocalDateTime();
        int year = localDateTime.getYear();
        int month = localDateTime.getMonthOfYear();
        int day = localDateTime.getDayOfMonth();
        String dateColStr = String.format("%04d%02d%02d", year, month, day);
        dateColVal = Integer.valueOf(dateColStr);
        result = new Integer(Integer.valueOf(dateColStr));
    } else {
        result = new Long(dateColVal);
    }

    if (dateColVal < minTime) {
        minTime = dateColVal;
    }
    if (dateColVal > maxTime) {
        maxTime = dateColVal;
    }
    return result;
}

---

From source file:com.graphaware.neo4j.graphgen.faker.FakerService.java

public long unixTime() {
    long now = System.currentTimeMillis();
    long diff = ThreadLocalRandom.current().nextLong(now);

    return ThreadLocalRandom.current().nextLong((now - diff), now);
}

---

From source file:cc.mallet.types.PolyaUrnDirichlet.java

protected double nextStandardExponential() {
    for (;;) {//from   w  w w. ja  v a2 s  . c  o  m
        double u = ThreadLocalRandom.current().nextDouble();
        double e = -FastMath.log(u);
        if (e > 0 && e < Double.MAX_VALUE && e == e) { // check for zero, positive infinity, and NaN
            return e;
        }
    }
}

---

From source file:org.briljantframework.data.dataframe.DataFrames.java

/**
 * Same as {@link #permuteRecords(DataFrame, java.util.Random)} with a static random number
 * generator.//from  w ww .  j a va 2  s. c o  m
 *
 * @param in the input data frame
 * @return a permuted copy of {@code in}
 */
public static DataFrame permuteRecords(DataFrame in) {
    return permuteRecords(in, ThreadLocalRandom.current());
}

---

From source file:org.apache.hadoop.hbase.io.asyncfs.TestFanOutOneBlockAsyncDFSOutput.java

@Test
public void testRecover() throws IOException, InterruptedException, ExecutionException {
    Path f = new Path("/" + name.getMethodName());
    EventLoop eventLoop = EVENT_LOOP_GROUP.next();
    final FanOutOneBlockAsyncDFSOutput out = FanOutOneBlockAsyncDFSOutputHelper.createOutput(FS, f, true, false,
            (short) 3, FS.getDefaultBlockSize(), eventLoop);
    final byte[] b = new byte[10];
    ThreadLocalRandom.current().nextBytes(b);
    final FanOutOneBlockAsyncDFSOutputFlushHandler handler = new FanOutOneBlockAsyncDFSOutputFlushHandler();
    eventLoop.execute(new Runnable() {

        @Override// w w w .j a  v a 2  s .  c om
        public void run() {
            out.write(b, 0, b.length);
            out.flush(null, handler, false);
        }
    });
    handler.get();
    // restart one datanode which causes one connection broken
    TEST_UTIL.getDFSCluster().restartDataNode(0);
    try {
        handler.reset();
        eventLoop.execute(new Runnable() {

            @Override
            public void run() {
                out.write(b, 0, b.length);
                out.flush(null, handler, false);
            }
        });
        try {
            handler.get();
            fail("flush should fail");
        } catch (ExecutionException e) {
            // we restarted one datanode so the flush should fail
            LOG.info("expected exception caught", e);
        }
        out.recoverAndClose(null);
        assertEquals(b.length, FS.getFileStatus(f).getLen());
        byte[] actual = new byte[b.length];
        try (FSDataInputStream in = FS.open(f)) {
            in.readFully(actual);
        }
        assertArrayEquals(b, actual);
    } finally {
        ensureAllDatanodeAlive();
    }
}

---

From source file:ffx.algorithms.mc.RosenbluthCBMC.java

public boolean cbmcStep() {
    numMovesProposed++;/*from   w ww.ja  v a 2s.c  o  m*/
    boolean accepted;
    double temperature;
    if (thermostat != null) {
        temperature = thermostat.getCurrentTemperature();
    } else {
        temperature = 298.15;
    }
    double beta = 1.0 / (BOLTZMANN * temperature);

    // Select a target residue.
    int which = ThreadLocalRandom.current().nextInt(targets.size());
    Residue target = targets.get(which);
    RosenbluthChiAllMove cbmcMove = new RosenbluthChiAllMove(mola, target, trialSetSize, ffe, temperature,
            writeSnapshots, numMovesProposed, true);
    if (cbmcMove.getMode() == RosenbluthChiAllMove.MODE.CHEAP) {
        if (cbmcMove.wasAccepted()) {
            numMovesAccepted++;
        }
        return cbmcMove.wasAccepted();
    }
    double Wn = cbmcMove.getWn();
    double Wo = cbmcMove.getWo();
    double criterion = Math.min(1, Wn / Wo);
    double rng = ThreadLocalRandom.current().nextDouble();
    logger.info(String.format("    rng:    %5.2f", rng));
    if (rng < criterion) {
        cbmcMove.move();
        numMovesAccepted++;
        logger.info(String.format(" Accepted!  Energy: %.4f\n", cbmcMove.finalEnergy));
        accepted = true;
        write();
    } else {
        logger.info(String.format(" Denied.\n"));
        accepted = false;
    }

    return accepted;
}

---

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