Example usage for java.nio ByteBuffer get

Introduction

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

Prototype

public abstract byte get();

Source Link

Document

Returns the byte at the current position and increases the position by 1.

Usage

From source file:com.dianping.puma.parser.mysql.event.BinlogHeader.java

public void parse(ByteBuffer buf, PumaContext context) {
    timestamp = PacketUtils.readLong(buf, 4);
    eventType = buf.get();
    serverId = PacketUtils.readLong(buf, 4);
    eventLength = PacketUtils.readLong(buf, 4);
    nextPosition = PacketUtils.readLong(buf, 4);
    flags = PacketUtils.readInt(buf, 2);
}

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From source file:com.offbynull.portmapper.pcp.FilterPcpOption.java

/**
 * Constructs a {@link FilterPcpOption} by parsing a buffer.
 * @param buffer buffer containing PCP option data
 * @throws NullPointerException if any argument is {@code null}
 * @throws BufferUnderflowException if not enough data is available in {@code buffer}
 * @throws IllegalArgumentException if option code is not {@code 3}, or if the field {@code prefixLength > 128}
 *//*from  w w w. j av a2s. c o m*/
public FilterPcpOption(ByteBuffer buffer) {
    super(buffer);

    Validate.isTrue(super.getCode() == 3);

    buffer.get(); // reserved
    prefixLength = buffer.get() & 0xFF;
    remotePeerPort = buffer.getShort() & 0xFFFF;

    Validate.inclusiveBetween(0, 128, prefixLength); // 0 indicates 'no filter'
    Validate.inclusiveBetween(0, 65535, remotePeerPort); // 0 indicates 'all ports', should never trigger

    byte[] addrArr = new byte[16];
    buffer.get(addrArr);
    try {
        remotePeerIpAddress = InetAddress.getByAddress(addrArr);
    } catch (UnknownHostException uhe) {
        throw new IllegalStateException(uhe); // should never happen
    }
}

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From source file:com.codefollower.lealone.omid.tso.persistence.LoggerProtocol.java

/**
 * Execute a logged entry (several logged ops)
 * @param bb Serialized operations//w ww .j av  a  2s .co m
 */
void execute(ByteBuffer bb) {
    boolean done = !bb.hasRemaining();
    while (!done) {
        byte op = bb.get();
        long timestamp, startTimestamp, commitTimestamp;
        if (LOG.isTraceEnabled()) {
            LOG.trace("Operation: " + op);
        }
        switch (op) {
        case TIMESTAMP_ORACLE:
            timestamp = bb.getLong();
            this.getTimestampOracle().initialize(timestamp);
            this.initialize();
            oracle = true;
            break;
        case COMMIT:
            startTimestamp = bb.getLong();
            commitTimestamp = bb.getLong();
            processCommit(startTimestamp, commitTimestamp);
            if (commitTimestamp < largestDeletedTimestamp) {
                commits = true;
            }
            break;
        case LARGEST_DELETED_TIMESTAMP:
            timestamp = bb.getLong();
            processLargestDeletedTimestamp(timestamp);

            break;
        case ABORT:
            timestamp = bb.getLong();
            processHalfAbort(timestamp);

            break;
        case FULL_ABORT:
            timestamp = bb.getLong();
            processFullAbort(timestamp);

            break;
        case LOG_START:
            consumed = true;
            break;
        case SNAPSHOT:
            int snapshot = (int) bb.getLong();
            if (snapshot > this.snapshot) {
                this.snapshot = snapshot;
                this.hasSnapshot = true;
            }
            if (hasSnapshot && snapshot < this.snapshot) {
                this.aborts = true;
            }
            break;
        }
        if (bb.remaining() == 0)
            done = true;
    }
}

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From source file:com.yahoo.omid.tso.persistence.LoggerProtocol.java

/**
 * Execute a logged entry (several logged ops)
 * @param bb Serialized operations// ww w.ja v a2 s.  c o m
 */
void execute(ByteBuffer bb) {
    boolean done = !bb.hasRemaining();
    while (!done) {
        byte op = bb.get();
        long timestamp, startTimestamp, commitTimestamp;
        if (LOG.isTraceEnabled()) {
            LOG.trace("Operation: " + op);
        }
        switch (op) {
        case TIMESTAMPORACLE:
            timestamp = bb.getLong();
            this.getSO().initialize(timestamp);
            this.initialize();
            oracle = true;
            break;
        case COMMIT:
            startTimestamp = bb.getLong();
            commitTimestamp = bb.getLong();
            processCommit(startTimestamp, commitTimestamp);
            if (commitTimestamp < largestDeletedTimestamp) {
                commits = true;
            }
            break;
        case LARGESTDELETEDTIMESTAMP:
            timestamp = bb.getLong();
            processLargestDeletedTimestamp(timestamp);

            break;
        case ABORT:
            timestamp = bb.getLong();
            processAbort(timestamp);

            break;
        case FULLABORT:
            timestamp = bb.getLong();
            processFullAbort(timestamp);

            break;
        case LOGSTART:
            consumed = true;
            break;
        case SNAPSHOT:
            int snapshot = (int) bb.getLong();
            if (snapshot > this.snapshot) {
                this.snapshot = snapshot;
                this.hasSnapshot = true;
            }
            if (hasSnapshot && snapshot < this.snapshot) {
                this.aborts = true;
            }
            break;
        }
        if (bb.remaining() == 0)
            done = true;
    }
}

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From source file:com.smartitengineering.util.simple.io.BufferedInputStream.java

@Override
public int read() throws IOException {
    ByteBuffer buffer = getCurrentBuffer();
    if (available() > 0) {
        return buffer.get();
    }/*from w  w w  . jav a2  s.c o m*/
    int remaining = buffer.remaining();
    if (remaining <= 0) {
        if (hasNextBuffer()) {
            currentBuffer = nextBuffer();
            return read();
        } else if (eofReached) {
            return -1;
        } else {
            remaining = initializeNewBuffer();
            buffer = getCurrentBuffer();
        }
    }
    byte[] readBuffer = new byte[remaining];
    int read = wrappedStream.read(readBuffer);
    if (read > 0) {
        int position = buffer.position();
        buffer.put(readBuffer, 0, read);
        buffer.position(position);
        get(buffer).add(read);
        return buffer.get();
    } else {
        eofReached = true;
        return -1;
    }
}

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From source file:net.jenet.Packet.java

/**
 * Copies the given buffer into this packet's data.
 * @ param buffer//from  w  ww  . j a  v a  2  s  .  c  om
 *              Buffer to copy from
 */
public void fromBuffer(ByteBuffer buffer) {
    data.clear();
    for (int i = 0; i < dataLength; i++) {
        data.put(buffer.get());
    }
}

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From source file:com.offbynull.portmapper.natpmp.NatPmpResponse.java

/**
 * Constructs a {@link NatPmpResponse} object by parsing a buffer.
 * @param buffer buffer containing NAT-PMP response data
 * @throws NullPointerException if any argument is {@code null}
 * @throws BufferUnderflowException if not enough data is available in {@code buffer}
 * @throws IllegalArgumentException if the version doesn't match the expected version (must always be {@code 0}), or if the op is
 * {@code < 128}, or if there's an unsuccessful/unrecognized result code
 *//*from  ww  w . ja v a2 s. c o m*/
NatPmpResponse(ByteBuffer buffer) {
    Validate.notNull(buffer);

    if (buffer.remaining() < 2) {
        throw new IllegalArgumentException("Bad packet size: " + buffer.remaining());
    }

    int version = buffer.get() & 0xFF;
    Validate.isTrue(version == 0, "Unknown version: %d", version);

    op = buffer.get() & 0xFF;
    Validate.isTrue(op >= 128, "Op must be >= 128: %d", op);

    int resultCodeNum = buffer.getShort() & 0xFFFF;
    NatPmpResultCode[] resultCodes = NatPmpResultCode.values();

    Validate.isTrue(resultCodeNum < resultCodes.length, "Unknown result code encountered: %d", resultCodeNum);
    Validate.isTrue(resultCodeNum == NatPmpResultCode.SUCCESS.ordinal(), "Unsuccessful result code: %s [%s]",
            resultCodes[resultCodeNum].toString(), resultCodes[resultCodeNum].getMessage());

    secondsSinceStartOfEpoch = buffer.getInt() & 0xFFFFFFFFL;
}

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From source file:com.byteatebit.nbserver.task.TestWriteMessageTask.java

@Test
public void testWriteCompleteMessage() throws IOException {
    SocketChannel socket = mock(SocketChannel.class);
    ByteArrayOutputStream messageStream = new ByteArrayOutputStream();
    String message = "hi\n";
    when(socket.write(any(ByteBuffer.class))).then(new Answer<Integer>() {
        @Override/*from w w w . jav a  2s .  c  o m*/
        public Integer answer(InvocationOnMock invocationOnMock) throws Throwable {
            ByteBuffer buffer = (ByteBuffer) invocationOnMock.getArguments()[0];
            while (buffer.hasRemaining())
                messageStream.write(buffer.get());
            return buffer.position();
        }
    });
    INbContext nbContext = mock(INbContext.class);
    SelectionKey selectionKey = mock(SelectionKey.class);
    when(selectionKey.channel()).thenReturn(socket);
    when(selectionKey.isValid()).thenReturn(true);
    when(selectionKey.readyOps()).thenReturn(SelectionKey.OP_WRITE);

    WriteMessageTask writeTask = WriteMessageTask.Builder.builder().withByteBuffer(ByteBuffer.allocate(100))
            .build();
    List<String> callbackInvoked = new ArrayList<>();
    Runnable callback = () -> callbackInvoked.add("");
    Consumer<Exception> exceptionHandler = e -> Assert.fail(e.getMessage());
    writeTask.writeMessage(message.getBytes(StandardCharsets.UTF_8), nbContext, socket, callback,
            exceptionHandler);
    verify(nbContext, times(1)).register(any(SocketChannel.class), eq(SelectionKey.OP_WRITE), any(), any());
    writeTask.write(selectionKey, callback, exceptionHandler);
    verify(selectionKey, times(1)).interestOps(0);

    Assert.assertEquals(message, messageStream.toString(StandardCharsets.UTF_8));
    Assert.assertEquals(1, callbackInvoked.size());
}

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From source file:com.netflix.aegisthus.pig.AegisthusLoadCaster.java

private long getNumber(byte[] arg0) throws Exception {
    byte[] by = hex.decode(arg0);
    ByteBuffer bb = ByteBuffer.allocate(by.length);
    bb.put(by);//w  ww .ja  va  2 s  . c o m
    bb.position(0);
    switch (by.length) {
    case 1:
        return (long) bb.get();
    case 2:
        return (long) bb.getShort();
    case 4:
        return (long) bb.getInt();
    case 8:
        return (long) bb.getLong();
    }
    throw new UnexpectedException("couldn't determine datatype");
}

---

From source file:hudson.Util.java

/**
 * Encode a single path component for use in an HTTP URL.
 * Escapes all non-ASCII, general unsafe (space and "#%<>[\]^`{|}~)
 * and HTTP special characters (/;:?) as specified in RFC1738.
 * (so alphanumeric and !@$&*()-_=+',. are not encoded)
 * Note that slash(/) is encoded, so the given string should be a
 * single path component used in constructing a URL.
 * Method name inspired by PHP's rawurlencode.
 *//*  www.j  a v  a 2s  .  c  o  m*/
public static String rawEncode(String s) {
    boolean escaped = false;
    StringBuilder out = null;
    CharsetEncoder enc = null;
    CharBuffer buf = null;
    char c;
    for (int i = 0, m = s.length(); i < m; i++) {
        c = s.charAt(i);
        if (c > 122 || uriMap[c]) {
            if (!escaped) {
                out = new StringBuilder(i + (m - i) * 3);
                out.append(s.substring(0, i));
                enc = Charset.forName("UTF-8").newEncoder();
                buf = CharBuffer.allocate(1);
                escaped = true;
            }
            // 1 char -> UTF8
            buf.put(0, c);
            buf.rewind();
            try {
                ByteBuffer bytes = enc.encode(buf);
                while (bytes.hasRemaining()) {
                    byte b = bytes.get();
                    out.append('%');
                    out.append(toDigit((b >> 4) & 0xF));
                    out.append(toDigit(b & 0xF));
                }
            } catch (CharacterCodingException ex) {
            }
        } else if (escaped) {
            out.append(c);
        }
    }
    return escaped ? out.toString() : s;
}

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