Example usage for java.nio ByteBuffer putLong

Introduction

In this page you can find the example usage for java.nio ByteBuffer putLong.

Prototype

public abstract ByteBuffer putLong(long value);

Source Link

Document

Writes the given long to the current position and increases the position by 8.

Usage

From source file:com.nestedbird.util.UUIDConverter.java

/**
 * Turns a UUID in string format to a Base64 encoded version
 *
 * @param uuidString String representation of the uuid
 * @return base64 encoded version of the uuid
 * @throws IllegalArgumentException String must be a valid uuid
 * @throws NullPointerException     String cannot be null
 */// w  w w.  jav  a  2  s  .c  om
public static String toBase64(final String uuidString) {
    if (uuidString == null)
        throw new NullPointerException("String cannot be null");
    if (!isUUID(uuidString))
        throw new IllegalArgumentException("string must be a valid uuid");

    final UUID uuid = UUID.fromString(uuidString);
    final ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
    bb.putLong(uuid.getMostSignificantBits());
    bb.putLong(uuid.getLeastSignificantBits());
    return Base64.encodeBase64URLSafeString(bb.array());
}

From source file:com.srotya.tau.nucleus.Utils.java

public static byte[] longToBytes(long x) {
    ByteBuffer buffer = ByteBuffer.allocate(8);
    buffer.putLong(x);
    return buffer.array();
}

From source file:com.pinterest.deployservice.common.CommonUtils.java

/**
 * TODO figure out how to use guava to achive this
 *
 * @return base64 encoded shorten UUID, e.g. 11YozyYYTvKmuUXpRDvoJA
 *///from ww  w . j  a  v a  2  s  .  com
public static String getBase64UUID() {
    UUID uuid = UUID.randomUUID();
    ByteBuffer buffer = ByteBuffer.wrap(new byte[16]);
    buffer.putLong(uuid.getMostSignificantBits());
    buffer.putLong(uuid.getLeastSignificantBits());
    String base64 = BaseEncoding.base64Url().omitPadding().encode(buffer.array());
    if (base64.charAt(0) == '_') {
        return 'x' + base64.substring(1);
    }
    if (base64.charAt(0) == '-') {
        return 'X' + base64.substring(1);
    }
    return base64;
}

From source file:io.datenwelt.cargo.rest.utils.Strings.java

public static String token() {
    ByteBuffer buffer = ByteBuffer.allocate(Long.BYTES * 100);
    for (int i = 0; i < 100; i++) {
        buffer.putLong(random.nextLong());
    }//from w w w.  ja v  a2 s . c  o  m
    return DigestUtils.md5Hex(buffer.array());
}

From source file:vellum.crypto.topt.Totps.java

static int getCode(byte[] secret, long timeIndex) throws NoSuchAlgorithmException, InvalidKeyException {
    SecretKeySpec signKey = new SecretKeySpec(secret, "HmacSHA1");
    ByteBuffer buffer = ByteBuffer.allocate(8);
    buffer.putLong(timeIndex);
    byte[] timeBytes = buffer.array();
    Mac mac = Mac.getInstance("HmacSHA1");
    mac.init(signKey);//from ww w .ja  v a2  s  . co m
    byte[] hash = mac.doFinal(timeBytes);
    int offset = hash[19] & 0xf;
    long truncatedHash = hash[offset] & 0x7f;
    for (int i = 1; i < 4; i++) {
        truncatedHash <<= 8;
        truncatedHash |= hash[offset + i] & 0xff;
    }
    return (int) (truncatedHash %= 1000000);
}

From source file:com.networknt.light.util.HashUtil.java

public static String generateUUID() {
    UUID id = UUID.randomUUID();
    ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
    bb.putLong(id.getMostSignificantBits());
    bb.putLong(id.getLeastSignificantBits());
    Base64 base64 = new Base64();
    return base64.encodeBase64URLSafeString(bb.array());
}

From source file:com.knewton.mapreduce.util.RandomStudentEventGenerator.java

/**
 * Helper method for wrapping an id in a <code>ByteBuffer</code>.
 *
 * @return A byte buffer with a random ID
 *///w w  w  .  ja  v a  2  s  . c o  m
public static ByteBuffer getRandomIdBuffer() {
    long id = getRandomId();
    ByteBuffer bb = ByteBuffer.wrap(new byte[8]);
    bb.putLong(id);
    bb.rewind();
    return bb;
}

From source file:org.linguafranca.pwdb.kdbx.Helpers.java

public static String base64FromUuid(UUID uuid) {
    byte[] buffer = new byte[16];
    ByteBuffer b = ByteBuffer.wrap(buffer);
    b.putLong(uuid.getMostSignificantBits());
    b.putLong(8, uuid.getLeastSignificantBits());
    // round the houses for Android
    return new String(Base64.encodeBase64(buffer));
}

From source file:org.linguafranca.pwdb.kdbx.Helpers.java

public static String hexStringFromUuid(UUID uuid) {
    byte[] buffer = new byte[16];
    ByteBuffer b = ByteBuffer.wrap(buffer);
    b.putLong(uuid.getMostSignificantBits());
    b.putLong(8, uuid.getLeastSignificantBits());
    // round the houses for Android
    return new String(Hex.encodeHex(buffer));
}

From source file:com.cnaude.mutemanager.UUIDFetcher.java

public static byte[] toBytes(UUID uuid) {
    ByteBuffer byteBuffer = ByteBuffer.wrap(new byte[16]);
    byteBuffer.putLong(uuid.getMostSignificantBits());
    byteBuffer.putLong(uuid.getLeastSignificantBits());
    return byteBuffer.array();
}