Example usage for java.util Random nextLong

Introduction

In this page you can find the example usage for java.util Random nextLong.

Prototype

public long nextLong() 

Source Link

Document

Returns the next pseudorandom, uniformly distributed long value from this random number generator's sequence.

Usage

From source file:com.adaptris.core.fs.ItemCacheCase.java

protected ProcessedItemList createCacheEntries(int count) {
    ProcessedItemList result = new ProcessedItemList();
    Random r = new Random();
    for (int i = 0; i < count; i++) {
        result.addProcessedItem(new ProcessedItem(CACHE_PREFIX + i, r.nextLong(), r.nextLong()));
    }//  w  w w .jav  a  2  s . c  o m
    return result;
}

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From source file:io.selendroid.server.model.SelendroidStandaloneDriverTest.java

@Test
public void shouldCreateNewTestSession() throws Exception {
    // Setting up driver with test app and device stub
    SelendroidStandaloneDriver driver = getSelendroidStandaloneDriver();
    SelendroidConfiguration conf = new SelendroidConfiguration();
    conf.addSupportedApp(new File(APK_FILE).getAbsolutePath());
    driver.initApplicationsUnderTest(conf);
    DeviceStore store = new DeviceStore(false, EMULATOR_PORT, anDeviceManager());

    DeviceForTest emulator = new DeviceForTest(DeviceTargetPlatform.ANDROID16);
    Random random = new Random();
    final UUID definedSessionId = new UUID(random.nextLong(), random.nextLong());

    emulator.testSessionListener = new TestSessionListener(definedSessionId.toString(), "test") {
        @Override/*from w w w. j a v  a 2  s  .  c o m*/
        public SelendroidResponse executeSelendroidRequest(Properties params) {
            return null;
        }
    };
    store.addDeviceToStore(emulator);
    driver.setDeviceStore(store);

    // testing new session creation
    SelendroidCapabilities capa = new SelendroidCapabilities();
    capa.setAut(TEST_APP_ID);
    capa.setAndroidTarget(DeviceTargetPlatform.ANDROID16.name());
    try {
        String sessionId = driver.createNewTestSession(new JSONObject(capa.asMap()), 0);
        Assert.assertNotNull(UUID.fromString(sessionId));
    } finally {
        // this will also stop the http server
        emulator.stop();
    }
}

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From source file:gov.nih.nci.cabig.caaers.web.filters.CsrfPreventionFilter.java

private String generateCsrfToken() {
    long seed = System.currentTimeMillis();
    Random r = new Random();
    r.setSeed(seed);/*w w w . jav a2  s  .  c  om*/
    return Long.toString(seed) + Long.toString(Math.abs(r.nextLong()));
}

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From source file:com.almarsoft.GroundhogReader.lib.MessagePosterLib.java

private String generateMsgId() {
    String host = mPrefs.getString("host", "noknownhost.com").trim();
    Random rand = new Random();
    String randstr = Long.toString(Math.abs(rand.nextLong()), 72);

    return "<" + "almarsoft." + randstr + "@" + host + ">";

}

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From source file:test.integ.be.fedict.performance.TestPKILoadCRLsTest.java

private List<X509Certificate> getCertificateChain(KeyPair testKeyPair, CAConfiguration ca, Random random,
        DateTime notBefore, DateTime notAfter) throws Exception {

    long t = Math.abs(random.nextLong()) % (0 != ca.getCrlRecords() ? ca.getCrlRecords() : 2);
    if (0 == t) {
        t = 1;/*from  w  w w. j  a  v  a  2 s.c om*/
    }
    BigInteger serialNumber = new BigInteger(Long.toString(t + ca.getCrlRecords()));

    String crlPath = new URI(
            testPkiPath + "/" + CrlServlet.PATH + "?" + CrlServlet.CA_QUERY_PARAM + "=" + ca.getName(), false)
                    .toString();
    String ocspPath = new URI(
            testPkiPath + "/" + OcspServlet.PATH + "?" + OcspServlet.CA_QUERY_PARAM + "=" + ca.getName(), false)
                    .toString();

    LOG.debug("generate for CA=" + ca.getName() + " sn=" + serialNumber);

    X509Certificate certificate = TestUtils.generateCertificate(testKeyPair.getPublic(), "CN=Test",
            ca.getKeyPair().getPrivate(), ca.getCertificate(), notBefore, notAfter, "SHA512WithRSAEncryption",
            true, false, false, ocspPath, crlPath, null, serialNumber);

    List<X509Certificate> certificateChain = new LinkedList<X509Certificate>();
    certificateChain.add(certificate);
    certificateChain.add(ca.getCertificate());

    if (null != ca.getRoot()) {
        CAConfiguration parent = ca.getRoot();
        while (null != parent.getRoot()) {
            certificateChain.add(parent.getCertificate());
            parent = parent.getRoot();
        }
        certificateChain.add(parent.getCertificate());
    }
    return certificateChain;
}

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From source file:org.satsang.security.BlowfishEasy.java

/**
 * Encrypts a string (in Unicode).//w  ww  . j a va  2  s .c  o m
 * 
 * @param plaintext
 *            string to encrypt
 * @param rndgen
 *            random generator (usually a java.security.SecureRandom
 *            instance)
 * @return encrypted string in binhex format
 */
public String encryptString(String plaintext, Random rndgen) {
    return encStr(plaintext, rndgen.nextLong());
}

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From source file:org.apache.hadoop.mapreduce.lib.input.TestCombineSequenceFileInputFormat.java

@Test(timeout = 10000)
public void testFormat() throws IOException, InterruptedException {
    Job job = Job.getInstance(conf);/* w  w  w.j ava  2  s  .  c  o m*/

    Random random = new Random();
    long seed = random.nextLong();
    random.setSeed(seed);

    localFs.delete(workDir, true);
    FileInputFormat.setInputPaths(job, workDir);

    final int length = 10000;
    final int numFiles = 10;

    // create files with a variety of lengths
    createFiles(length, numFiles, random, job);

    TaskAttemptContext context = MapReduceTestUtil.createDummyMapTaskAttemptContext(job.getConfiguration());
    // create a combine split for the files
    InputFormat<IntWritable, BytesWritable> format = new CombineSequenceFileInputFormat<IntWritable, BytesWritable>();
    for (int i = 0; i < 3; i++) {
        int numSplits = random.nextInt(length / (SequenceFile.SYNC_INTERVAL / 20)) + 1;
        LOG.info("splitting: requesting = " + numSplits);
        List<InputSplit> splits = format.getSplits(job);
        LOG.info("splitting: got =        " + splits.size());

        // we should have a single split as the length is comfortably smaller than
        // the block size
        assertEquals("We got more than one splits!", 1, splits.size());
        InputSplit split = splits.get(0);
        assertEquals("It should be CombineFileSplit", CombineFileSplit.class, split.getClass());

        // check the split
        BitSet bits = new BitSet(length);
        RecordReader<IntWritable, BytesWritable> reader = format.createRecordReader(split, context);
        MapContext<IntWritable, BytesWritable, IntWritable, BytesWritable> mcontext = new MapContextImpl<IntWritable, BytesWritable, IntWritable, BytesWritable>(
                job.getConfiguration(), context.getTaskAttemptID(), reader, null, null,
                MapReduceTestUtil.createDummyReporter(), split);
        reader.initialize(split, mcontext);
        assertEquals("reader class is CombineFileRecordReader.", CombineFileRecordReader.class,
                reader.getClass());

        try {
            while (reader.nextKeyValue()) {
                IntWritable key = reader.getCurrentKey();
                BytesWritable value = reader.getCurrentValue();
                assertNotNull("Value should not be null.", value);
                final int k = key.get();
                LOG.debug("read " + k);
                assertFalse("Key in multiple partitions.", bits.get(k));
                bits.set(k);
            }
        } finally {
            reader.close();
        }
        assertEquals("Some keys in no partition.", length, bits.cardinality());
    }
}

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From source file:org.motechproject.mobile.imp.serivce.oxd.PasswordEncoderImpl.java

public String generateSalt() {
    Random random = new Random();
    StringBuffer buf = new StringBuffer();
    buf.append(Long.toString(System.currentTimeMillis()));
    buf.append(Long.toString(random.nextLong()));
    return rawToHex(sha1Encode(buf.toString()));
}

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From source file:org.apache.hadoop.fs.TestLocalFileSystem.java

void testFileCrcInternal(boolean inlineChecksum) throws IOException {
    ((Log4JLogger) HftpFileSystem.LOG).getLogger().setLevel(Level.ALL);

    Random random = new Random(1);

    final long seed = random.nextLong();
    random.setSeed(seed);/* ww  w .  ja  v a2 s  . c o m*/
    FileSystem fs = FileSystem.getLocal(new Configuration());

    // generate random data
    final byte[] data = new byte[1024 * 1024 + 512 * 7 + 66];
    random.nextBytes(data);

    // write data to a file
    Path foo = new Path(TEST_ROOT_DIR, "foo_" + inlineChecksum);
    {
        final FSDataOutputStream out = fs.create(foo, false, 512, (short) 2, 512);
        out.write(data);
        out.close();
    }

    // compute data CRC
    DataChecksum checksum = DataChecksum.newDataChecksum(DataChecksum.CHECKSUM_CRC32, 1);
    checksum.update(data, 0, data.length);

    // compute checksum
    final int crc = fs.getFileCrc(foo);
    System.out.println("crc=" + crc);

    TestCase.assertEquals((int) checksum.getValue(), crc);
}

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From source file:org.apache.edgent.samples.utils.sensor.PeriodicRandomSensor.java

/**
 * Create a periodic sensor stream with readings from {@link Random#nextLong()}.
 * @param t the topology to add the sensor stream to
 * @param periodMsec how frequently to generate a reading
 * @return the sensor value stream//from  w  ww  .j a va2 s. com
 */
public TStream<Pair<Long, Long>> newLong(Topology t, long periodMsec) {
    Random r = newRandom();
    return t.poll(() -> new Pair<Long, Long>(System.currentTimeMillis(), r.nextLong()), periodMsec,
            TimeUnit.MILLISECONDS);

}

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