Example usage for io.netty.handler.codec.http.multipart HttpPostMultipartRequestDecoder offer

Introduction

In this page you can find the example usage for io.netty.handler.codec.http.multipart HttpPostMultipartRequestDecoder offer.

Prototype

@Override
public HttpPostMultipartRequestDecoder offer(HttpContent content) 

Source Link

Document

Initialized the internals from a new chunk

Usage

From source file:com.github.ambry.rest.NettyMultipartRequest.java

License:Open Source License

/**
 * {@inheritDoc}/*  w w w  . ja va 2  s  . c o  m*/
 * <p/>
 * Prepares the request for reading by decoding all the content added via {@link #addContent(HttpContent)}.
 * @throws RestServiceException if request channel is closed or if the request could not be decoded/prepared.
 */
@Override
public void prepare() throws RestServiceException {
    if (!isOpen()) {
        nettyMetrics.multipartRequestAlreadyClosedError.inc();
        throw new RestServiceException("Request is closed", RestServiceErrorCode.RequestChannelClosed);
    } else if (!readyForRead) {
        // make sure data is held in memory.
        HttpDataFactory httpDataFactory = new DefaultHttpDataFactory(false);
        HttpPostMultipartRequestDecoder postRequestDecoder = new HttpPostMultipartRequestDecoder(
                httpDataFactory, request);
        try {
            HttpContent httpContent = rawRequestContents.poll();
            while (httpContent != null) {
                try {
                    // if the request is also an instance of HttpContent, the HttpPostMultipartRequestDecoder does the offer
                    // automatically at the time of construction. We should not add it again.
                    if (httpContent != request) {
                        postRequestDecoder.offer(httpContent);
                    }
                } finally {
                    ReferenceCountUtil.release(httpContent);
                }
                httpContent = rawRequestContents.poll();
            }
            for (InterfaceHttpData part : postRequestDecoder.getBodyHttpDatas()) {
                processPart(part);
            }
            allArgsReadOnly = Collections.unmodifiableMap(allArgs);
            requestContents.add(LastHttpContent.EMPTY_LAST_CONTENT);
            readyForRead = true;
        } catch (HttpPostRequestDecoder.ErrorDataDecoderException e) {
            nettyMetrics.multipartRequestDecodeError.inc();
            throw new RestServiceException("There was an error decoding the request", e,
                    RestServiceErrorCode.MalformedRequest);
        } finally {
            postRequestDecoder.destroy();
        }
    }
}

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