Example usage for io.vertx.core.buffer Buffer slice

Introduction

In this page you can find the example usage for io.vertx.core.buffer Buffer slice.

Prototype

Buffer slice(int start, int end);

Source Link

Document

Returns a slice of this buffer.

Usage

From source file:com.julienviet.childprocess.impl.ProcessImpl.java

License:Apache License

@Override
public synchronized boolean onStdinReady(ByteBuffer byteBuffer) {
    Buffer buffer;
    while (byteBuffer.remaining() > 0 && (buffer = stdinPending.poll()) != null) {
        byte[] bytes;
        if (buffer.length() <= byteBuffer.remaining()) {
            bytes = buffer.getBytes();/* w  ww.  j a  v  a  2  s  .  com*/
        } else {
            bytes = buffer.getBytes(0, byteBuffer.remaining());
            stdinPending.addFirst(buffer.slice(byteBuffer.remaining(), buffer.length()));
        }
        byteBuffer.put(bytes); // See to do directly with Netty ByteBuf
        stdinSize -= bytes.length;
    }
    byteBuffer.flip();
    context.runOnContext(v -> checkDrained());
    if (stdinSize > 0) {
        return true;
    } else {
        wantWrite = false;
        if (stdinStatus == CLOSING) {
            stdinStatus = CLOSED;
            process.closeStdin(false);
        }
        return false;
    }
}

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From source file:io.servicecomb.foundation.vertx.server.TcpParser.java

License:Apache License

protected void onParse(Buffer buffer) {
    switch (status) {
    case TCP_HEADER:
        ByteBuf buf = buffer.getByteBuf();
        if (!firstNEqual(TCP_MAGIC, buf.array(), TCP_MAGIC.length)) {
            reset();//w w w .  java2  s .c  o  m
            return;
        }

        buf.skipBytes(TCP_MAGIC.length);
        msgId = buf.readLong();
        totalLen = buf.readInt();
        headerLen = buf.readInt();

        if (totalLen == 0) {
            onReadOnePackage(null, null);
            return;
        }

        parser.fixedSizeMode(totalLen);
        status = ParseStatus.TCP_PAYLOAD;
        break;

    case TCP_PAYLOAD:
        Buffer headerBuffer = buffer.slice(0, headerLen);
        Buffer bodyBuffer = buffer.slice(headerLen, buffer.length());
        onReadOnePackage(headerBuffer, bodyBuffer);
        break;

    default:
        break;
    }
}

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From source file:io.sqp.proxy.vertx.WebsocketWriteStream.java

License:Open Source License

private void flushSlice(Buffer buffer, int from, int length, boolean isFinal) {
    // a slice is just a view on the same buffer: no need to copy something
    Buffer outBuf = buffer.slice(from, from + length);

    WebSocketFrame frame;// w  w  w . ja  v  a  2s . c o m
    if (!_firstFrameWritten) {
        if (_format == DataFormat.Binary) {
            frame = WebSocketFrame.binaryFrame(outBuf, isFinal);
        } else {
            frame = WebSocketFrame.textFrame(outBuf.toString("UTF-8"), isFinal);
        }
    } else {
        frame = WebSocketFrame.continuationFrame(outBuf, isFinal);
    }
    _socket.writeFrame(frame);
    _firstFrameWritten = true;
}

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From source file:org.lealone.net.AsyncConnection.java

License:Open Source License

@Override
public void handle(Buffer buffer) {
    if (lastBuffer != null) {
        buffer = lastBuffer.appendBuffer(buffer);
        lastBuffer = null;//from  w w w .  ja  v  a 2 s  . c  o  m
    }

    int length = buffer.length();
    if (length < 4) {
        lastBuffer = buffer;
        return;
    }

    int pos = 0;
    try {
        while (true) {
            // ?Transfer??????Transfer
            // ?CommandHandler?Transfer??
            Transfer transfer;
            if (pos == 0)
                transfer = new Transfer(this, socket, buffer);
            else
                transfer = new Transfer(this, socket, buffer.slice(pos, pos + length));
            int packetLength = transfer.readInt();
            if (length - 4 == packetLength) {
                parsePacket(transfer);
                break;
            } else if (length - 4 > packetLength) {
                parsePacket(transfer);
                pos = pos + packetLength + 4;
                length = length - (packetLength + 4);
                // ??4
                if (length < 4) {
                    lastBuffer = buffer.getBuffer(pos, pos + length);
                    break;
                } else {
                    continue;
                }
            } else {
                lastBuffer = buffer.getBuffer(pos, pos + length);
                break;
            }
        }
    } catch (Throwable e) {
        logger.error("Parse packet", e);
    }
}

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