Example usage for com.fasterxml.jackson.core.json ByteSourceJsonBootstrapper ByteSourceJsonBootstrapper

Introduction

In this page you can find the example usage for com.fasterxml.jackson.core.json ByteSourceJsonBootstrapper ByteSourceJsonBootstrapper.

Prototype

public ByteSourceJsonBootstrapper(IOContext ctxt, byte[] inputBuffer, int inputStart, int inputLen) 

Source Link

Usage

From source file:org.opendaylight.groupbasedpolicy.jsonrpc.JsonRpcDecoder.java

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf buf, List<Object> out) throws Exception {

    logger.trace("readable bytes {}, records read {}, incomplete record bytes {}", buf.readableBytes(),
            recordsRead, lastRecordBytes);

    if (lastRecordBytes == 0) {
        if (buf.readableBytes() < 4) {
            return; //wait for more data
        }/*  w w  w .  j av  a  2s .c  om*/

        skipSpaces(buf);

        byte[] buff = new byte[4];
        buf.getBytes(buf.readerIndex(), buff);
        ByteSourceJsonBootstrapper strapper = new ByteSourceJsonBootstrapper(jacksonIOContext, buff, 0, 4);
        JsonEncoding jsonEncoding = strapper.detectEncoding();
        if (!JsonEncoding.UTF8.equals(jsonEncoding)) {
            throw new InvalidEncodingException(jsonEncoding.getJavaName(), "currently only UTF-8 is supported");
        }
    }

    int i = lastRecordBytes + buf.readerIndex();

    for (; i < buf.writerIndex(); i++) {
        switch (buf.getByte(i)) {
        case '{':
            if (!inS)
                leftCurlies++;
            break;
        case '}':
            if (!inS)
                rightCurlies++;
            break;
        case '"': {
            if (buf.getByte(i - 1) != '\\')
                inS = !inS;
            break;
        }
        default:
            break;
        }

        if (leftCurlies != 0 && leftCurlies == rightCurlies && !inS) {
            ByteBuf slice = buf.readSlice(1 + i - buf.readerIndex());
            JsonParser jp = jacksonJsonFactory.createParser(new ByteBufInputStream(slice));
            JsonNode root = jp.readValueAsTree();
            out.add(root);
            leftCurlies = rightCurlies = lastRecordBytes = 0;
            recordsRead++;
            break;
        }

        if (i - buf.readerIndex() >= maxFrameLength) {
            fail(ctx, i - buf.readerIndex());
        }
    }

    // end of stream, save the incomplete record index to avoid reexamining the whole on next run
    if (i >= buf.writerIndex()) {
        lastRecordBytes = buf.readableBytes();
        return;
    }
}

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From source file:org.opendaylight.ovsdb.lib.jsonrpc.JsonRpcDecoder.java

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf buf, List<Object> out) throws Exception {

    logger.trace("readable bytes {}, records read {}, incomplete record bytes {}", buf.readableBytes(),
            recordsRead, lastRecordBytes);

    if (lastRecordBytes == 0) {
        if (buf.readableBytes() < 4) {
            return; //wait for more data
        }/*from ww w.  j a va 2 s. co  m*/

        skipSpaces(buf);

        byte[] buff = new byte[4];
        buf.getBytes(buf.readerIndex(), buff);
        ByteSourceJsonBootstrapper strapper = new ByteSourceJsonBootstrapper(jacksonIOContext, buff, 0, 4);
        JsonEncoding jsonEncoding = strapper.detectEncoding();
        if (!JsonEncoding.UTF8.equals(jsonEncoding)) {
            throw new InvalidEncodingException(jsonEncoding.getJavaName(), "currently only UTF-8 is supported");
        }
    }

    int index = lastRecordBytes + buf.readerIndex();

    for (; index < buf.writerIndex(); index++) {
        switch (buf.getByte(index)) {
        case '{':
            if (!inS) {
                leftCurlies++;
            }
            break;
        case '}':
            if (!inS) {
                rightCurlies++;
            }
            break;
        case '"':
            if (buf.getByte(index - 1) != '\\') {
                inS = !inS;
            }
            break;
        default:
            break;
        }

        if (leftCurlies != 0 && leftCurlies == rightCurlies && !inS) {
            ByteBuf slice = buf.readSlice(1 + index - buf.readerIndex());
            JsonParser jp = jacksonJsonFactory.createParser(new ByteBufInputStream(slice));
            JsonNode root = jp.readValueAsTree();
            out.add(root);
            leftCurlies = rightCurlies = lastRecordBytes = 0;
            recordsRead++;
            break;
        }

        if (index - buf.readerIndex() >= maxFrameLength) {
            fail(ctx, index - buf.readerIndex());
        }
    }

    // end of stream, save the incomplete record index to avoid reexamining the whole on next run
    if (index >= buf.writerIndex()) {
        lastRecordBytes = buf.readableBytes();
        return;
    }
}

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