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Java streaming client that provides easy-to-use client APIs to connect and subscribe to QuoteMedia's market data streaming services. https://quotemedia.com/

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package com.quotemedia.streamer.client.impl;

import com.quotemedia.qitch.BlockEncoder;
import com.quotemedia.streamer.messages.smessage.SMessage;
import org.atmosphere.wasync.Encoder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import static com.google.common.base.Preconditions.checkNotNull;

public class QitchEncoder implements Encoder {
    private static final Logger log = LoggerFactory.getLogger(QitchEncoder.class);
    private final BlockEncoder encoder;

    public QitchEncoder(final BlockEncoder encoder) {
        this.encoder = checkNotNull(encoder);
    }

    @Override
    public byte[] encode(final SMessage msg) {
        try {
            if (msg instanceof MessageImpl) {
                return this.encoder.encode(msg.sequencenumber(), 0, ((MessageImpl) msg).decodedpayload());
            } else if (msg != null) {
                log.warn("Unsupported SMessage implementation {}", msg.getClass().getName());
            }
            return null;
        } catch (final Exception e) {
            log.warn("Problem encoding message. Reason {}: {}", e.getClass().getSimpleName(), e.getMessage());
            log.debug("Problem encoding message.", e);
        }
        return null;
    }
}