Example usage for io.vertx.core.datagram DatagramPacket data

Introduction

In this page you can find the example usage for io.vertx.core.datagram DatagramPacket data.

Prototype

Buffer data();

Source Link

Document

Returns the data of the io.vertx.core.datagram.DatagramPacket

Usage

From source file:org.hawkular.metrics.clients.ptrans.collectd.packet.CollectdPacketDecoder.java

License:Apache License

public CollectdPacket decode(DatagramPacket packet) {
    long start = System.currentTimeMillis();
    ByteBuf content = packet.data().getByteBuf();
    List<Part<?>> parts = new ArrayList<>(100);
    for (;;) {//from ww w .j a v a 2s .co m
        if (!hasReadableBytes(content, 4)) {
            break;
        }
        short partTypeId = content.readShort();
        PartType partType = PartType.findById(partTypeId);
        int partLength = content.readUnsignedShort();
        int valueLength = partLength - 4;
        if (!hasReadableBytes(content, valueLength)) {
            break;
        }
        if (partType == null) {
            content.skipBytes(valueLength);
            continue;
        }
        Part<?> part;
        switch (partType) {
        case HOST:
        case PLUGIN:
        case PLUGIN_INSTANCE:
        case TYPE:
        case INSTANCE:
            part = new StringPart(partType, readStringPartContent(content, valueLength));
            break;
        case TIME:
        case TIME_HIGH_RESOLUTION:
        case INTERVAL:
        case INTERVAL_HIGH_RESOLUTION:
            part = new NumericPart(partType, readNumericPartContent(content));
            break;
        case VALUES:
            part = new ValuePart(partType, readValuePartContent(content, valueLength));
            break;
        default:
            part = null;
            content.skipBytes(valueLength);
        }
        //noinspection ConstantConditions
        if (part != null) {
            log.tracef("Decoded part: %s", part);
            parts.add(part);
        }
    }

    if (log.isTraceEnabled()) {
        long stop = System.currentTimeMillis();
        log.tracef("Decoded datagram in %d ms", stop - start);
    }

    if (parts.size() > 0) {
        return new CollectdPacket(parts);
    } else {
        log.trace("No parts decoded, no CollectdPacket output");
        return null;
    }
}

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