Example usage for java.util.concurrent ThreadLocalRandom current

List of usage examples for java.util.concurrent ThreadLocalRandom current

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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.sk89q.craftbook.sponge.mechanics.HeadDrops.java

@Listener
public void onItemDrops(DropItemEvent.Destruct event, @First Entity spawnCause) {
    EntityDamageSource damageSource = event.getCause().first(EntityDamageSource.class).orElse(null);
    Entity killer = null;/*from   ww w . j a v  a2 s. co m*/

    if (damageSource != null) {
        killer = damageSource.getSource();
        if (killer instanceof Subject && !killPermission.hasPermission((Subject) killer)) {
            return;
        }
    }

    if (playerKillsOnly.getValue() && !(killer instanceof Player)) {
        return;
    }

    double chance = Math.min(1, dropRate.getValue());

    if (killer != null && killer instanceof Player) {
        int level = ((Player) killer).getItemInHand(HandTypes.MAIN_HAND)
                .filter(item -> item.get(Keys.ITEM_ENCHANTMENTS).isPresent())
                .map(item -> item.get(Keys.ITEM_ENCHANTMENTS).get().stream()
                        .filter(enchant -> enchant.getType().equals(EnchantmentTypes.LOOTING)).findFirst())
                .filter(Optional::isPresent).map(enchant -> enchant.get().getLevel()).orElse(0);
        chance = Math.min(1, chance + (lootingRateModifier.getValue() * level));
    }

    if (ThreadLocalRandom.current().nextDouble() > chance) {
        return;
    }

    GameProfile profile = null;
    if (spawnCause instanceof Player) {
        profile = ((Player) spawnCause).getProfile();
    }

    getStackForEntity(spawnCause.getType(), profile).ifPresent(itemStack -> {
        Vector3d location = spawnCause.getLocation().getPosition();
        Item item = (Item) spawnCause.getWorld().createEntity(EntityTypes.ITEM, location);
        item.offer(Keys.REPRESENTED_ITEM, itemStack.createSnapshot());
        spawnCause.getWorld().spawnEntity(item);
    });
}

From source file:org.neo4j.io.pagecache.impl.SingleFilePageSwapperTest.java

@Test
public void mustHandleMischiefInPositionedVectoredRead() throws Exception {
    int bytesTotal = 512;
    int bytesPerPage = 32;
    int pageCount = bytesTotal / bytesPerPage;
    byte[] data = new byte[bytesTotal];
    ThreadLocalRandom.current().nextBytes(data);

    PageSwapperFactory factory = swapperFactory();
    factory.setFileSystemAbstraction(getFs());
    File file = getFile();//from w  ww.  j  ava 2s . co  m
    PageSwapper swapper = createSwapper(factory, file, bytesTotal, NO_CALLBACK, true);
    try {
        swapper.write(0, new ByteBufferPage(wrap(data)));
    } finally {
        swapper.close();
    }

    RandomAdversary adversary = new RandomAdversary(0.5, 0.0, 0.0);
    factory.setFileSystemAbstraction(new AdversarialFileSystemAbstraction(adversary, getFs()));
    swapper = createSwapper(factory, file, bytesPerPage, NO_CALLBACK, false);

    ByteBufferPage[] pages = new ByteBufferPage[pageCount];
    for (int i = 0; i < pageCount; i++) {
        pages[i] = createPage(bytesPerPage);
    }

    byte[] temp = new byte[bytesPerPage];
    try {
        for (int i = 0; i < 10_000; i++) {
            for (ByteBufferPage page : pages) {
                clear(page);
            }
            assertThat(swapper.read(0, pages, 0, pages.length), is((long) bytesTotal));
            for (int j = 0; j < pageCount; j++) {
                System.arraycopy(data, j * bytesPerPage, temp, 0, bytesPerPage);
                assertThat(array(pages[j].buffer), is(temp));
            }
        }
    } finally {
        swapper.close();
    }
}

From source file:com.spotify.helios.testing.TemporaryJobBuilder.java

private String randomVersion() {
    return toHexString(ThreadLocalRandom.current().nextInt());
}

From source file:com.itdhq.contentLoader.ContentLoaderComponent.java

private long genLongProperty(PropertyDefinition def) {
    return ThreadLocalRandom.current().nextLong();
}

From source file:uk.dsxt.voting.tests.TestDataGenerator.java

private void saveData(ClientFullInfo[] clients, Participant[] participants, String name, Voting voting,
        int holdersCount, int vmCount, int minutes, boolean generateVotes, boolean generateDisconnect,
        int disconnectNodes) throws Exception {
    //saving info to appropriate files
    final String dirPath = "/src/main/resources/scenarios";
    FileUtils.writeStringToFile(//from w ww.j a v a 2  s  .co  m
            new File(String.format("%s/%s/%s/participants.json", BaseTestsLauncher.MODULE_NAME, dirPath, name)),
            mapper.writeValueAsString(participants));
    Iso20022Serializer serializer = new Iso20022Serializer();
    FileUtils.writeStringToFile(
            new File(String.format("%s/%s/%s/voting.xml", BaseTestsLauncher.MODULE_NAME, dirPath, name)),
            serializer.serialize(voting));
    StringBuilder vmConfig = new StringBuilder();
    int countByVM = (holdersCount + vmCount - 1) / vmCount;
    int totalCount = 0;
    for (int i = 0; i < vmCount; i++) {
        int count = Math.min(holdersCount - totalCount, countByVM);
        vmConfig.append(String.format("%s=%s%n", i, count));
        totalCount += count;
    }
    FileUtils.writeStringToFile(
            new File(String.format("%s/%s/%s/vm.txt", BaseTestsLauncher.MODULE_NAME, dirPath, name)),
            vmConfig.toString());

    //aggregating data from all files and save it to one file
    if (generateDisconnect)
        ThreadLocalRandom.current().ints(1, holdersCount - 1).distinct().limit(disconnectNodes)
                .forEach(i -> clients[i].setWalletOffShedule(generateWalletoffShedule(minutes)));
    StringBuilder nodesConfig = new StringBuilder();
    for (int i = 0; i < holdersCount; i++) {
        ClientFullInfo client = clients[i];
        List<ClientCredentials> credentials = client.getClients().stream()
                .map(child -> new ClientCredentials(Integer.toString(child.getId()),
                        Integer.toString(child.getId())))
                .collect(Collectors.toList());
        FileUtils.writeStringToFile(new File(String.format("%s/%s/%s/%s/credentials.json",
                BaseTestsLauncher.MODULE_NAME, dirPath, name, client.getId())),
                mapper.writeValueAsString(credentials));
        List<Client> clientsJson = client.getClients().stream()
                .map(child -> new Client(Integer.toString(child.getId()), child.getPacketSizeBySecurity(),
                        child.getRole()))
                .collect(Collectors.toList());
        FileUtils.writeStringToFile(
                new File(String.format("%s/%s/%s/%s/clients.json", BaseTestsLauncher.MODULE_NAME, dirPath, name,
                        client.getId())),
                mapper.writeValueAsString(new ClientsOnTime[] {
                        new ClientsOnTime(-20000, clientsJson.toArray(new Client[clientsJson.size()])) }));
        String messages = client.getClients().stream().filter(child -> child.getVote() != null)
                .map(child -> String.format("%s:%s", randomInt(30, minutes * 60), child.getVote().toString()))
                .reduce("", (s1, s2) -> s1 + "\n" + s2);
        FileUtils.writeStringToFile(new File(String.format("%s/%s/%s/%s/messages.txt",
                BaseTestsLauncher.MODULE_NAME, dirPath, name, client.getId())), generateVotes ? messages : "");
        FileUtils
                .writeStringToFile(
                        new File(String.format("%s/%s/%s/%s/walletoff_schedule.txt",
                                BaseTestsLauncher.MODULE_NAME, dirPath, name, client.getId())),
                        client.getWalletOffShedule());

        nodesConfig.append(i);
        nodesConfig.append("=");
        nodesConfig.append(mapper.writeValueAsString(new NodeInfo(
                client.getId() == 0 ? MASTER_PASSWORD : (client.isVictim() ? "victim_password" : ""),
                client.getId(), Math.max(0, client.getHolderId()), client.getPrivateKey(),
                !client.isHonest() ? "client_password" : null)));
        nodesConfig.append("\n");
    }
    FileUtils.writeStringToFile(
            new File(String.format("%s/%s/%s/voting.txt", BaseTestsLauncher.MODULE_NAME, dirPath, name)),
            nodesConfig.toString());
}

From source file:com.itdhq.contentLoader.ContentLoaderComponent.java

private int genIntProperty(PropertyDefinition def, int max) {
    return ThreadLocalRandom.current().nextInt(max);
}

From source file:com.itdhq.contentLoader.ContentLoaderComponent.java

private Date genDateTimeProperty(PropertyDefinition def, int max) {
    //long t2 = t1 + 2 * 60 * 1000 + r.nextInt(60 * 1000) + 1;
    return new Date(System.currentTimeMillis() + ThreadLocalRandom.current().nextInt());
    //DateTime d2 = new DateTime(t2);

}

From source file:com.itdhq.contentLoader.ContentLoaderComponent.java

private String genTextProperty(PropertyDefinition def) {
    if (def.getConstraints().isEmpty()) {
        return genPlainText(ThreadLocalRandom.current().nextInt(5, 100));
    } else {//from www  .  j  ava2 s  .co  m
        if (def.getConstraints().get(0).getConstraint().getType() == ListOfValuesConstraint.CONSTRAINT_TYPE) {
            List<String> list = ((ListOfValuesConstraint) def.getConstraints().get(0).getConstraint())
                    .getAllowedValues();
            return list.get(ThreadLocalRandom.current().nextInt(list.size()));
        }
    }
    return genPlainText(ThreadLocalRandom.current().nextInt(5, 100));
}

From source file:org.jahia.utils.maven.plugin.contentgenerator.bo.PageBO.java

private Element getPersonalizedElement(Element element) {

    Random random = ThreadLocalRandom.current();

    Element personalizationElement = new Element("experience-" + element.getName());
    personalizationElement.setAttribute("primaryType", "wemnt:personalizedContent", ContentGeneratorCst.NS_JCR);
    personalizationElement.setAttribute("active", "true", ContentGeneratorCst.NS_WEM);
    personalizationElement.setAttribute("personalizationStrategy", "priority", ContentGeneratorCst.NS_WEM);
    String[] segments = ContentGeneratorCst.SEGMENTS[random.nextInt(ContentGeneratorCst.SEGMENTS.length)];
    int nbPersonalizationVariants = minPersonalizationVariants
            + random.nextInt(maxPersonalizationVariants - minPersonalizationVariants + 1);
    if (nbPersonalizationVariants > segments.length) {
        nbPersonalizationVariants = segments.length;
    }//  w  ww. jav  a 2  s . c o m
    for (int i = 0; i < nbPersonalizationVariants; i++) {

        Element variantElement = (Element) element.clone();
        variantElement.setName(variantElement.getName() + "-" + (i + 1));

        Attribute mixinTypesAttribute = variantElement.getAttribute("mixinTypes", ContentGeneratorCst.NS_JCR);
        String mixinTypes;
        if (mixinTypesAttribute == null) {
            mixinTypes = StringUtils.EMPTY;
        } else {
            mixinTypes = mixinTypesAttribute.getValue() + " ";
        }
        variantElement.setAttribute("mixinTypes", mixinTypes + "wemmix:editItem", ContentGeneratorCst.NS_JCR);

        String jsonFilter = "{\"parameterValues\":{\"subConditions\":[{\"type\":\"profileSegmentCondition\",\"parameterValues\":{\"segments\":[\""
                + segments[i] + "\"]}}],\"operator\":\"and\"},\"type\":\"booleanCondition\"}";
        variantElement.setAttribute("jsonFilter", jsonFilter, ContentGeneratorCst.NS_WEM);
        personalizationElement.addContent(variantElement);
    }

    return personalizationElement;
}

From source file:org.neo4j.io.pagecache.impl.SingleFilePageSwapperTest.java

@Test
public void mustHandleMischiefInPositionedVectoredWrite() throws Exception {
    int bytesTotal = 512;
    int bytesPerPage = 32;
    int pageCount = bytesTotal / bytesPerPage;
    byte[] data = new byte[bytesTotal];
    ThreadLocalRandom.current().nextBytes(data);
    ByteBufferPage zeroPage = createPage(bytesPerPage);
    clear(zeroPage);//w w w  . j ava2 s.c o m

    File file = getFile();
    PageSwapperFactory factory = swapperFactory();
    RandomAdversary adversary = new RandomAdversary(0.5, 0.0, 0.0);
    factory.setFileSystemAbstraction(new AdversarialFileSystemAbstraction(adversary, getFs()));
    PageSwapper swapper = createSwapper(factory, file, bytesPerPage, NO_CALLBACK, true);

    ByteBufferPage[] writePages = new ByteBufferPage[pageCount];
    ByteBufferPage[] readPages = new ByteBufferPage[pageCount];
    ByteBufferPage[] zeroPages = new ByteBufferPage[pageCount];
    for (int i = 0; i < pageCount; i++) {
        writePages[i] = createPage(bytesPerPage);
        writePages[i].putBytes(data, 0, i * bytesPerPage, bytesPerPage);
        readPages[i] = createPage(bytesPerPage);
        zeroPages[i] = zeroPage;
    }

    try {
        for (int i = 0; i < 10_000; i++) {
            adversary.setProbabilityFactor(0);
            swapper.write(0, zeroPages, 0, pageCount);
            adversary.setProbabilityFactor(1);
            swapper.write(0, writePages, 0, pageCount);
            for (ByteBufferPage readPage : readPages) {
                clear(readPage);
            }
            adversary.setProbabilityFactor(0);
            assertThat(swapper.read(0, readPages, 0, pageCount), is((long) bytesTotal));
            for (int j = 0; j < pageCount; j++) {
                assertThat(array(readPages[j].buffer), is(array(writePages[j].buffer)));
            }
        }
    } finally {
        swapper.close();
    }
}