Examples with MultiMessageCodec org.graylog2.plugin.inputs.codecs.MultiMessageCodec used on opensource projects

Example 1 with MultiMessageCodec

use of org.graylog2.plugin.inputs.codecs.MultiMessageCodec in project graylog2-server by Graylog2.

the class DecodingProcessor method processMessage.

private void processMessage(final MessageEvent event) throws ExecutionException {
    final RawMessage raw = event.getRaw();
    // for backwards compatibility: the last source node should contain the input we use.
    // this means that extractors etc defined on the prior inputs are silently ignored.
    // TODO fix the above
    String inputIdOnCurrentNode;
    try {
        // .inputId checked during raw message decode!
        inputIdOnCurrentNode = Iterables.getLast(raw.getSourceNodes()).inputId;
    } catch (NoSuchElementException e) {
        inputIdOnCurrentNode = null;
    }
    final Codec.Factory<? extends Codec> factory = codecFactory.get(raw.getCodecName());
    if (factory == null) {
        LOG.warn("Couldn't find factory for codec <{}>, skipping message {} on input <{}>.", raw.getCodecName(), raw, inputIdOnCurrentNode);
        return;
    }
    final Codec codec = factory.create(raw.getCodecConfig());
    final String baseMetricName = name(codec.getClass(), inputIdOnCurrentNode);
    Message message = null;
    Collection<Message> messages = null;
    final Timer.Context decodeTimeCtx = parseTime.time();
    final long decodeTime;
    try {
        // TODO The Codec interface should be changed for 2.0 to support collections of messages so we can remove this hack.
        if (codec instanceof MultiMessageCodec) {
            messages = ((MultiMessageCodec) codec).decodeMessages(raw);
        } else {
            message = codec.decode(raw);
        }
    } catch (RuntimeException e) {
        LOG.error("Unable to decode raw message {} on input <{}>.", raw, inputIdOnCurrentNode);
        metricRegistry.meter(name(baseMetricName, "failures")).mark();
        throw e;
    } finally {
        decodeTime = decodeTimeCtx.stop();
    }
    if (message != null) {
        event.setMessage(postProcessMessage(raw, codec, inputIdOnCurrentNode, baseMetricName, message, decodeTime));
    } else if (messages != null && !messages.isEmpty()) {
        final List<Message> processedMessages = Lists.newArrayListWithCapacity(messages.size());
        for (final Message msg : messages) {
            final Message processedMessage = postProcessMessage(raw, codec, inputIdOnCurrentNode, baseMetricName, msg, decodeTime);
            if (processedMessage != null) {
                processedMessages.add(processedMessage);
            }
        }
        event.setMessages(processedMessages);
    }
}