Example usage for io.netty.buffer ByteBuf writeByte

Introduction

In this page you can find the example usage for io.netty.buffer ByteBuf writeByte.

Prototype

public abstract ByteBuf writeByte(int value);

Source Link

Document

Sets the specified byte at the current writerIndex and increases the writerIndex by 1 in this buffer.

Usage

From source file:cn.weaponmod.core.network.MessageWMKey.java

License:Open Source License

@Override
public void toBytes(ByteBuf buf) {
    buf.writeByte(keyid);
    buf.writeBoolean(keyDown);
}

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From source file:com.addthis.basis.util.Varint.java

License:Apache License

/**
 * Encodes a value using the variable-length encoding from
 * <a href="http://code.google.com/apis/protocolbuffers/docs/encoding.html">
 * Google Protocol Buffers</a>. Zig-zag is not used, so input must not be negative.
 * If values can be negative, use {@link #writeSignedVarLong(long, DataOutput)}
 * instead. This method treats negative input as like a large unsigned value.
 *
 * @param value value to encode//w  ww  . j  av a 2 s . c  o m
 * @param buf   to write bytes to
 * @throws IOException if {@link DataOutput} throws {@link IOException}
 */
public static void writeUnsignedVarLong(long value, ByteBuf buf) {
    while ((value & 0xFFFFFFFFFFFFFF80L) != 0L) {
        buf.writeByte(((int) value & 0x7F) | 0x80);
        value >>>= 7;
    }
    buf.writeByte((int) value & 0x7F);
}

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From source file:com.addthis.basis.util.Varint.java

License:Apache License

/**
 * @see #writeUnsignedVarLong(long, DataOutput)
 *//*w w w  .  ja  v a2 s  . c o  m*/
public static void writeUnsignedVarInt(int value, ByteBuf buf) {
    while ((value & 0xFFFFFF80) != 0L) {
        buf.writeByte((value & 0x7F) | 0x80);
        value >>>= 7;
    }
    buf.writeByte(value & 0x7F);
}

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From source file:com.addthis.hydra.data.util.KeyTopper.java

License:Apache License

/**
 * Encode the data structure into a serialized representation.
 * Encode the number of elements followed by each (key, value)
 * pair. If the error estimation is used then encode the special
 * byte value 0 (since we will never encode 0 as the size
 * of a non-empty map) at the head of the byte array.
 * @param version/*from   w ww  .  j  a v a 2s.c  o m*/
 * @return
 */
@Override
public byte[] bytesEncode(long version) {
    if (map.size() == 0) {
        return EMPTY;
    }
    byte[] retBytes = null;
    ByteBuf byteBuf = PooledByteBufAllocator.DEFAULT.buffer();
    try {
        if (hasErrors()) {
            byteBuf.writeByte(0);
        }
        Varint.writeUnsignedVarInt(map.size(), byteBuf);
        for (Map.Entry<String, Long> mapEntry : map.entrySet()) {
            String key = mapEntry.getKey();
            if (key == null) {
                throw new NullPointerException("KeyTopper decoded null key");
            }
            byte[] keyBytes = key.getBytes("UTF-8");
            Varint.writeUnsignedVarInt(keyBytes.length, byteBuf);
            byteBuf.writeBytes(keyBytes);
            Varint.writeUnsignedVarLong(mapEntry.getValue(), byteBuf);
            if (hasErrors()) {
                Long error = errors.get(key);
                if (error != null) {
                    Varint.writeUnsignedVarLong(error, byteBuf);
                } else {
                    Varint.writeUnsignedVarLong(0, byteBuf);
                }
            }
        }
        retBytes = new byte[byteBuf.readableBytes()];
        byteBuf.readBytes(retBytes);
    } catch (UnsupportedEncodingException e) {
        throw Throwables.propagate(e);
    } finally {
        byteBuf.release();
    }
    return retBytes;
}

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From source file:com.addthis.hydra.task.source.Mark.java

License:Apache License

@Override
public byte[] bytesEncode(long version) {
    byte[] retBytes = null;
    ByteBuf buffer = PooledByteBufAllocator.DEFAULT.buffer();
    try {/* w w  w  . ja va 2s . com*/
        byte[] valBytes = getValue().getBytes();
        Varint.writeUnsignedVarInt(valBytes.length, buffer);
        buffer.writeBytes(valBytes);
        Varint.writeUnsignedVarLong(getIndex(), buffer);
        buffer.writeByte(isEnd() ? 1 : 0);
        Varint.writeUnsignedVarInt(error, buffer);
        retBytes = new byte[buffer.readableBytes()];
        buffer.readBytes(retBytes);
    } finally {
        buffer.release();
    }
    return retBytes;
}

---

From source file:com.addthis.hydra.task.source.SimpleMark.java

License:Apache License

@Override
public byte[] bytesEncode(long version) {
    byte[] retBytes = null;
    ByteBuf buffer = PooledByteBufAllocator.DEFAULT.buffer();
    try {/*  ww w.j a va2  s  .  co  m*/
        byte[] valBytes = val.getBytes();
        Varint.writeUnsignedVarInt(valBytes.length, buffer);
        buffer.writeBytes(valBytes);
        Varint.writeUnsignedVarLong(index, buffer);
        buffer.writeByte(end ? 1 : 0);
        retBytes = new byte[buffer.readableBytes()];
        buffer.readBytes(retBytes);
    } finally {
        buffer.release();
    }
    return retBytes;
}

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From source file:com.addthis.meshy.service.stream.StreamTarget.java

License:Apache License

private int doSendMore(SendWatcher sender) {
    if (log.isTraceEnabled()) {
        log.trace("{} sendMore for {} rem={} closed={} streamComplete={} fileIn={}", this, sender, sendRemain,
                closed, streamComplete, fileIn);
    }/*from w ww. ja va2 s.c o  m*/
    try {
        if (maybeDropSend()) {
            if (StreamService.LOG_DROP_MORE || log.isDebugEnabled()) {
                log.debug("{} sendMore drop request sr={}, cl={}, co={}, fi={}", this, sendRemain, closed,
                        streamComplete, fileIn);
            }
            return -1;
        }
        byte[] next = fileIn.nextBytes(StreamService.READ_WAIT);
        if (next != null) {
            if (log.isTraceEnabled()) {
                log.trace("{} send add read={}", this, next.length);
            }
            StreamService.readBytes.addAndGet(next.length);
            ByteBuf buf = getSendBuffer(next.length + StreamService.STREAM_BYTE_OVERHEAD);
            buf.writeByte(StreamService.MODE_MORE);
            buf.writeBytes(next);
            int bytesSent = send(buf, sender);
            sendRemain.addAndGet(-bytesSent);
            sentBytes += bytesSent;
            if (log.isTraceEnabled()) {
                log.trace("{} read read={} sendRemain={}", this, next.length, sendRemain);
            }
            return bytesSent;
        } else if (fileIn.isEOF()) {
            if (log.isTraceEnabled()) {
                log.trace("{} read close on null. sendRemain={}", this, sendRemain);
            }
            modeClose();
            return -1;
        } else {
            if (log.isDebugEnabled()) {
                log.debug("{} read timeout. sendRemain={}", this, sendRemain);
            }
            return 0;
        }
    } catch (Exception ex) {
        ex.printStackTrace();
        return -1;
    }
}

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From source file:com.antsdb.saltedfish.server.mysql.PacketEncoder.java

License:Open Source License

/**
 * Add header to finish the full packet// www  . ja  v  a  2  s .  c  om
 * @param out
 * @param packetSeq
 * @param writeBodyFunc        write packet body function
 */
public static void writePacket(ByteBuf out, byte packetSeq, Callback writeBodyFunc) {
    int start = out.writerIndex();
    out.writeZero(4);
    writeBodyFunc.callback();
    int end = out.writerIndex();
    out.writeByte(0);
    out.writerIndex(start);
    int length = end - start - MySQLPacket.packetHeaderSize;
    BufferUtils.writeLongInt(out, length);
    out.writeByte(packetSeq);
    out.writerIndex(end);
    if (_log.isTraceEnabled()) {
        int readerIndex = out.readerIndex();
        out.readerIndex(start);
        byte[] bytes = new byte[end - start];
        out.readBytes(bytes);
        out.readerIndex(readerIndex);
        String dump = '\n' + UberUtil.hexDump(bytes);
        _log.trace(dump);
    }
}

---

From source file:com.antsdb.saltedfish.server.mysql.PacketEncoder.java

License:Open Source License

/**
 * Writer com_stmt_prepare_response packet body
 * <pre>//from  www .j ava 2  s  .  com
 * From server to client, in response to prepared statement initialization packet. 
 * It is made up of: 
 *   1.a PREPARE_OK packet
 *   2.if "number of parameters" > 0 
 *       (field packets) as in a Result Set Header Packet 
 *       (EOF packet)
 *   3.if "number of columns" > 0 
 *       (field packets) as in a Result Set Header Packet 
 *       (EOF packet)
 *   
 * -----------------------------------------------------------------------------------------
 * 
 *  Bytes              Name
 *  -----              ----
 *  1                  0 - marker for OK packet
 *  4                  statement_handler_id
 *  2                  number of columns in result set
 *  2                  number of parameters in query
 *  1                  filler (always 0)
 *  2                  warning count
 *  
 *  @see http://dev.mysql.com/doc/internals/en/prepared-statement-initialization-packet.html
 * </pre>
 * @param buffer
 * @param statementId
 * @param columnsNumber
 * @param parametersNumber
 */
public void writePreparedOKBody(ByteBuf buffer, long statementId, int columnsNumber, int parametersNumber) {
    // flag = 0
    buffer.writeByte(0);
    BufferUtils.writeUB4(buffer, statementId);
    BufferUtils.writeUB2(buffer, columnsNumber);
    BufferUtils.writeUB2(buffer, parametersNumber);
    // filler = 0
    buffer.writeByte(0);
    // warningCount = 0;
    BufferUtils.writeUB2(buffer, 0);
}

---

From source file:com.antsdb.saltedfish.server.mysql.PacketEncoder.java

License:Open Source License

/**
 * /* ww w .ja v  a  2 s.  co m*/
 * From server to client after command, if no error and result set -- that is,
 * if the command was a query which returned a result set. The Result Set Header
 * Packet is the first of several, possibly many, packets that the server sends
 * for result sets. The order of packets for a result set is:
 * 
 * <pre>
 * (Result Set Header Packet)   the number of columns
 * (Field Packets)              column descriptors
 * (EOF Packet)                 marker: end of Field Packets
 * (Row Data Packets)           row contents
 * (EOF Packet)                 marker: end of Data Packets
 * 
 * Bytes                        Name
 * -----                        ----
 * 1-9   (Length-Coded-Binary)  field_count
 * 1-9   (Length-Coded-Binary)  extra
 * 
 * @see http://forge.mysql.com/wiki/MySQL_Internals_ClientServer_Protocol#Result_Set_Header_Packet
 * </pre>
 * 
 * @param buffer
 * @param meta
 */
public void writeColumnDefBody(ByteBuf buffer, FieldMeta meta) {
    //catalog
    BufferUtils.writeLenString(buffer, "def", this.cs);
    //db, schema
    if (meta.getSourceTable() != null) {
        BufferUtils.writeLenString(buffer, meta.getSourceTable().getNamespace(), this.cs);
    } else {
        BufferUtils.writeLenString(buffer, "", this.cs);
    }
    // table
    BufferUtils.writeLenString(buffer, meta.getTableAlias(), this.cs);
    // orgTable
    if (meta.getSourceTable() != null) {
        BufferUtils.writeLenString(buffer, meta.getSourceTable().getTableName(), this.cs);
    } else {
        BufferUtils.writeLenString(buffer, "", this.cs);
    }
    // col name
    BufferUtils.writeLenString(buffer, meta.getName(), this.cs);
    // col original name
    BufferUtils.writeLenString(buffer, meta.getSourceName(), this.cs);
    // next length 
    buffer.writeByte((byte) 0x0C);
    if (meta.getType() == null) {
        BufferUtils.writeInt(buffer, 0x3f);
        BufferUtils.writeUB4(buffer, 0);
        buffer.writeByte((byte) (FIELD_TYPE_NULL & 0xff));
        buffer.writeByte(0x00);
        buffer.writeByte(0x00);
        buffer.writeByte(0);
    } else if (meta.getType().getJavaType() == Boolean.class) {
        BufferUtils.writeInt(buffer, 0x3f);
        BufferUtils.writeUB4(buffer, meta.getType().getLength());
        buffer.writeByte((byte) (FIELD_TYPE_TINY & 0xff));
        buffer.writeByte(0x00);
        buffer.writeByte(0x00);
        buffer.writeByte(0);
    } else if (meta.getType().getSqlType() == Types.TINYINT) {
        BufferUtils.writeInt(buffer, 0x3f);
        BufferUtils.writeUB4(buffer, meta.getType().getLength());
        buffer.writeByte((byte) (FIELD_TYPE_TINY & 0xff));
        buffer.writeByte(0x00);
        buffer.writeByte(0x00);
        buffer.writeByte((byte) meta.getType().getScale());
    } else if (meta.getType().getJavaType() == String.class) {
        // char set utf8_general_ci  : 0x21
        BufferUtils.writeInt(buffer, this.csidx);
        // length
        BufferUtils.writeUB4(buffer, meta.getType().getLength() * 3);
        // type code
        buffer.writeByte((byte) (FIELD_TYPE_VAR_STRING & 0xff));
        buffer.writeByte(0x00);
        buffer.writeByte(0x00);
        buffer.writeByte(0);
    } else if (meta.getType().getJavaType() == Integer.class) {
        BufferUtils.writeInt(buffer, 0x3f);
        BufferUtils.writeUB4(buffer, 21);
        buffer.writeByte((byte) (FIELD_TYPE_LONG & 0xff));
        buffer.writeByte(0x00);
        buffer.writeByte(0x00);
        buffer.writeByte(0);
    } else if (meta.getType().getJavaType() == Long.class) {
        BufferUtils.writeInt(buffer, 0x3f);
        BufferUtils.writeUB4(buffer, 21);
        buffer.writeByte((byte) (FIELD_TYPE_LONGLONG & 0xff));
        buffer.writeByte(0x00); // signed.
        buffer.writeByte(0x00);
        buffer.writeByte(0);
    } else if (meta.getType().getJavaType() == BigInteger.class) {
        BufferUtils.writeInt(buffer, 0x3f);
        BufferUtils.writeUB4(buffer, meta.getType().getLength());
        buffer.writeByte((byte) (FIELD_TYPE_LONGLONG & 0xff));
        buffer.writeByte(0x00);
        buffer.writeByte(0x00);
        buffer.writeByte(0);
    } else if (meta.getType().getJavaType() == BigDecimal.class) {
        BufferUtils.writeInt(buffer, 0x3f);
        BufferUtils.writeUB4(buffer, meta.getType().getLength());
        buffer.writeByte((byte) (FIELD_TYPE_DECIMAL & 0xff));
        buffer.writeByte(0x00);
        buffer.writeByte(0x00);
        buffer.writeByte((byte) meta.getType().getScale());
    } else if (meta.getType().getJavaType() == Float.class) {
        BufferUtils.writeInt(buffer, 0x3f);
        BufferUtils.writeUB4(buffer, meta.getType().getLength());
        buffer.writeByte((byte) (FIELD_TYPE_FLOAT & 0xff));
        buffer.writeByte(0x00);
        buffer.writeByte(0x00);
        buffer.writeByte((byte) meta.getType().getScale());
    } else if (meta.getType().getJavaType() == Double.class) {
        BufferUtils.writeInt(buffer, 0x3f);
        BufferUtils.writeUB4(buffer, meta.getType().getLength());
        buffer.writeByte((byte) (FIELD_TYPE_DOUBLE & 0xff));
        buffer.writeByte(0x00);
        buffer.writeByte(0x00);
        buffer.writeByte((byte) meta.getType().getScale());
    } else if (meta.getType().getJavaType() == Timestamp.class) {
        BufferUtils.writeInt(buffer, 0x3f);
        BufferUtils.writeUB4(buffer, meta.getType().getLength());
        buffer.writeByte((byte) (FIELD_TYPE_TIMESTAMP & 0xff));
        buffer.writeByte(0x00);
        buffer.writeByte(0x00);
        buffer.writeByte((byte) meta.getType().getScale());
    } else if (meta.getType().getJavaType() == Date.class) {
        BufferUtils.writeInt(buffer, 0x3f);
        BufferUtils.writeUB4(buffer, meta.getType().getLength());
        buffer.writeByte((byte) (FIELD_TYPE_DATE & 0xff));
        buffer.writeByte(0x00);
        buffer.writeByte(0x00);
        buffer.writeByte((byte) meta.getType().getScale());
    } else if (meta.getType().getJavaType() == Time.class) {
        BufferUtils.writeInt(buffer, 0x3f);
        BufferUtils.writeUB4(buffer, meta.getType().getLength());
        buffer.writeByte((byte) (FIELD_TYPE_TIME & 0xff));
        buffer.writeByte(0x00);
        buffer.writeByte(0x00);
        buffer.writeByte((byte) meta.getType().getScale());
    }
    // BLOB return byte[] as its java type
    else if (meta.getType().getJavaType() == byte[].class) {
        BufferUtils.writeInt(buffer, 0x3f);
        BufferUtils.writeUB4(buffer, 2147483647);
        buffer.writeByte((byte) (FIELD_TYPE_BLOB & 0xff));
        // flag for Blob is x90 x00
        buffer.writeByte(0x90);
        buffer.writeByte(0x00);
        buffer.writeByte((byte) meta.getType().getScale());
    } else {
        throw new NotImplementedException("Unsupported data type:" + meta.getType().getJavaType());
    }
    /**
     * need add meta info to specify flag
    if (meta.isNullable() == 1) {
    flags |= 0001;
    }
            
    if (meta.isSigned()) {
    flags |= 0020;
    }
            
    if (meta.isAutoIncrement()) {
    flags |= 0200;
    }
    */
    // filler
    buffer.writeZero(2);
}

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