Example usage for io.netty.buffer ByteBuf writableBytes

Introduction

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

Prototype

public abstract int writableBytes();

Source Link

Document

Returns the number of writable bytes which is equal to (this.capacity - this.writerIndex) .

Usage

From source file:io.grpc.alts.internal.AltsChannelCrypter.java

License:Apache License

@Override
public void encrypt(ByteBuf outBuf, List<ByteBuf> plainBufs) throws GeneralSecurityException {
    checkArgument(outBuf.nioBufferCount() == 1);
    // Copy plaintext buffers into outBuf for in-place encryption on single direct buffer.
    ByteBuf plainBuf = outBuf.slice(outBuf.writerIndex(), outBuf.writableBytes());
    plainBuf.writerIndex(0);/*from   w ww  .java  2  s  . c  o m*/
    for (ByteBuf inBuf : plainBufs) {
        plainBuf.writeBytes(inBuf);
    }

    verify(outBuf.writableBytes() == plainBuf.readableBytes() + TAG_LENGTH);
    ByteBuffer out = outBuf.internalNioBuffer(outBuf.writerIndex(), outBuf.writableBytes());
    ByteBuffer plain = out.duplicate();
    plain.limit(out.limit() - TAG_LENGTH);

    byte[] counter = incrementOutCounter();
    int outPosition = out.position();
    aeadCrypter.encrypt(out, plain, counter);
    int bytesWritten = out.position() - outPosition;
    outBuf.writerIndex(outBuf.writerIndex() + bytesWritten);
    verify(!outBuf.isWritable());
}

From source file:io.grpc.alts.internal.AltsChannelCrypter.java

License:Apache License

@Override
public void decrypt(ByteBuf out, ByteBuf tag, List<ByteBuf> ciphertextBufs) throws GeneralSecurityException {

    ByteBuf cipherTextAndTag = out.slice(out.writerIndex(), out.writableBytes());
    cipherTextAndTag.writerIndex(0);//w  ww . j a v  a2s. c  o m

    for (ByteBuf inBuf : ciphertextBufs) {
        cipherTextAndTag.writeBytes(inBuf);
    }
    cipherTextAndTag.writeBytes(tag);

    decrypt(out, cipherTextAndTag);
}

From source file:io.grpc.alts.internal.AltsChannelCrypter.java

License:Apache License

@Override
public void decrypt(ByteBuf out, ByteBuf ciphertextAndTag) throws GeneralSecurityException {
    int bytesRead = ciphertextAndTag.readableBytes();
    checkArgument(bytesRead == out.writableBytes());

    checkArgument(out.nioBufferCount() == 1);
    ByteBuffer outBuffer = out.internalNioBuffer(out.writerIndex(), out.writableBytes());

    checkArgument(ciphertextAndTag.nioBufferCount() == 1);
    ByteBuffer ciphertextAndTagBuffer = ciphertextAndTag.nioBuffer(ciphertextAndTag.readerIndex(), bytesRead);

    byte[] counter = incrementInCounter();
    int outPosition = outBuffer.position();
    aeadCrypter.decrypt(outBuffer, ciphertextAndTagBuffer, counter);
    int bytesWritten = outBuffer.position() - outPosition;
    out.writerIndex(out.writerIndex() + bytesWritten);
    ciphertextAndTag.readerIndex(out.readerIndex() + bytesRead);
    verify(out.writableBytes() == TAG_LENGTH);
}

From source file:io.grpc.alts.internal.AltsTsiFrameProtector.java

License:Apache License

private static ByteBuf writeSlice(ByteBuf in, int len) {
    checkArgument(len <= in.writableBytes());
    ByteBuf out = in.slice(in.writerIndex(), len);
    in.writerIndex(in.writerIndex() + len);
    return out.writerIndex(0);
}

From source file:io.grpc.alts.internal.ByteBufTestUtils.java

License:Apache License

static ByteBuf writeSlice(ByteBuf in, int len) {
    Preconditions.checkArgument(len <= in.writableBytes());
    ByteBuf out = in.slice(in.writerIndex(), len);
    in.writerIndex(in.writerIndex() + len);
    return out.writerIndex(0);
}

From source file:io.nodyn.buffer.Buffer.java

License:Apache License

public static long asciiWrite(JSObject object, String str, int offset, int len) {
    ByteBuf b = extract(object);
    int origWriter = b.writerIndex();
    byte[] bytes = str.getBytes(ASCII);
    len = Math.min(bytes.length, Math.min(len, b.writableBytes()));
    b.writeBytes(bytes, 0, len);//from   w  w  w.j a va  2  s  . c o m
    b.writerIndex(Math.max(b.writerIndex(), origWriter));
    return len;
}

From source file:io.nodyn.buffer.Buffer.java

License:Apache License

public static long ucs2Write(JSObject object, String str, int offset, int len) {
    ByteBuf b = extract(object);
    int origWriter = b.writerIndex();
    byte[] bytes = str.getBytes(UCS2);
    len = Math.min(bytes.length, Math.min(len, b.writableBytes()));
    b.writeBytes(bytes, 0, len);// w  w w . j a  v  a  2  s.c  o  m
    b.writerIndex(Math.max(b.writerIndex(), origWriter));
    return len;
}

From source file:io.nodyn.buffer.Buffer.java

License:Apache License

public static long hexWrite(JSObject object, String str, int offset, int len) {
    ByteBuf b = extract(object);
    int origWriter = b.writerIndex();
    byte[] bytes = Hex.decode(str);
    b.writerIndex(offset);/*from   w  ww .j av a 2  s .co  m*/
    len = Math.min(bytes.length, Math.min(len, b.writableBytes()));
    b.writeBytes(bytes, 0, len);
    b.writerIndex(Math.max(b.writerIndex(), origWriter));
    return len;
}

From source file:io.nodyn.buffer.Buffer.java

License:Apache License

public static long base64Write(JSObject object, String str, int offset, int len) {
    ByteBuf b = extract(object);
    int origWriter = b.writerIndex();
    byte[] bytes = Base64.decode(str);
    b.writerIndex(offset);//from   w  ww .j  ava 2s.c o m
    len = Math.min(bytes.length, Math.min(len, b.writableBytes()));
    b.writeBytes(bytes, 0, len);
    b.writerIndex(Math.max(b.writerIndex(), origWriter));
    return len;
}

From source file:io.nodyn.buffer.Buffer.java

License:Apache License

public static long binaryWrite(JSObject object, String str, int offset, int len) {
    ByteBuf b = extract(object);
    int origWriter = b.writerIndex();
    byte[] bytes = str.getBytes(BINARY);
    len = Math.min(bytes.length, Math.min(len, b.writableBytes()));
    b.writeBytes(bytes, 0, len);/*from   w ww  .j  a v a2  s  . c om*/
    b.writerIndex(Math.max(b.writerIndex(), origWriter));
    return len;
}