Example usage for io.netty.handler.codec.compression ZlibCodecFactory newZlibEncoder

Introduction

In this page you can find the example usage for io.netty.handler.codec.compression ZlibCodecFactory newZlibEncoder.

Prototype

public static ZlibEncoder newZlibEncoder(int compressionLevel, byte[] dictionary) 

Source Link

Usage

From source file:com.ebay.jetstream.http.netty.client.HttpClient.java

License:MIT License

public void post(URI uri, Object content, Map<String, String> headers, ResponseFuture responsefuture)
        throws Exception {

    if (m_shutDown.get()) {
        throw new IOException("IO has been Shutdown = ");

    }//from   www.  j  a  va 2s  .c  o m

    if (uri == null)
        throw new NullPointerException("uri is null or incorrect");

    if (!m_started.get()) {
        synchronized (this) {
            if (!m_started.get()) {
                start();
                m_started.set(true);
            }
        }
    }

    ByteBuf byteBuf = Unpooled.buffer(m_config.getInitialRequestBufferSize());
    ByteBufOutputStream outputStream = new ByteBufOutputStream(byteBuf);

    // transform to json
    try {
        m_mapper.writeValue(outputStream, content);
    } catch (JsonGenerationException e) {
        throw e;
    } catch (JsonMappingException e) {
        throw e;
    } catch (IOException e) {
        throw e;
    } finally {
        outputStream.close();
    }

    EmbeddedChannel encoder;
    String contenteEncoding;
    if ("gzip".equals(m_config.getCompressEncoder())) {
        encoder = new EmbeddedChannel(ZlibCodecFactory.newZlibEncoder(ZlibWrapper.GZIP, 1));
        contenteEncoding = "gzip";

    } else if ("deflate".equals(m_config.getCompressEncoder())) {
        encoder = new EmbeddedChannel(ZlibCodecFactory.newZlibEncoder(ZlibWrapper.ZLIB, 1));
        contenteEncoding = "deflate";
    } else {
        encoder = null;
        contenteEncoding = null;
    }

    if (encoder != null) {
        encoder.config().setAllocator(UnpooledByteBufAllocator.DEFAULT);
        encoder.writeOutbound(byteBuf);
        encoder.finish();
        byteBuf = (ByteBuf) encoder.readOutbound();
        encoder.close();
    }

    DefaultFullHttpRequest request = new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.POST,
            uri.toString(), byteBuf);
    if (contenteEncoding != null) {
        HttpHeaders.setHeader(request, HttpHeaders.Names.CONTENT_ENCODING, contenteEncoding);
    }
    HttpHeaders.setHeader(request, HttpHeaders.Names.ACCEPT_ENCODING, "gzip, deflate");
    HttpHeaders.setHeader(request, HttpHeaders.Names.CONTENT_TYPE, "application/json");
    HttpHeaders.setContentLength(request, byteBuf.readableBytes());

    if (isKeepAlive())
        HttpHeaders.setHeader(request, HttpHeaders.Names.CONNECTION, "keep-alive");

    if (headers != null) {
        @SuppressWarnings("rawtypes")
        Iterator it = headers.entrySet().iterator();
        while (it.hasNext()) {
            @SuppressWarnings("rawtypes")
            Map.Entry pairs = (Map.Entry) it.next();
            HttpHeaders.setHeader(request, (String) pairs.getKey(), pairs.getValue());
        }
    }

    if (responsefuture != null) {
        RequestId reqid = RequestId.newRequestId();

        m_responseDispatcher.add(reqid, responsefuture);

        HttpHeaders.setHeader(request, "X_EBAY_REQ_ID", reqid.toString());
        // we expect this to be echoed in the response used for correlation.
    }

    if (m_dataQueue.size() < m_workQueueCapacity) {
        ProcessHttpWorkRequest workRequest = new ProcessHttpWorkRequest(this, uri, request);

        if (!m_dataQueue.offer(workRequest)) {
            if (responsefuture != null) {
                responsefuture.setFailure();
                m_responseDispatcher.remove(request.headers().get("X_EBAY_REQ_ID"));
            }
        }
    } else {
        throw new IOException("downstream Queue is full ");
    }

}

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