Examples with DiskFileUpload io.netty.handler.codec.http.multipart.DiskFileUpload used on opensource projects

Example 1 with DiskFileUpload

use of io.netty.handler.codec.http.multipart.DiskFileUpload in project flink by apache.

the class HttpRequestHandler method channelRead0.

@Override
public void channelRead0(ChannelHandlerContext ctx, HttpObject msg) {
    try {
        if (msg instanceof HttpRequest) {
            currentRequest = (HttpRequest) msg;
            currentRequestPath = null;
            if (currentDecoder != null) {
                currentDecoder.destroy();
                currentDecoder = null;
            }
            if (currentRequest.getMethod() == HttpMethod.GET || currentRequest.getMethod() == HttpMethod.DELETE) {
                // directly delegate to the router
                ctx.fireChannelRead(currentRequest);
            } else if (currentRequest.getMethod() == HttpMethod.POST) {
                // POST comes in multiple objects. First the request, then the contents
                // keep the request and path for the remaining objects of the POST request
                currentRequestPath = new QueryStringDecoder(currentRequest.getUri(), ENCODING).path();
                currentDecoder = new HttpPostRequestDecoder(DATA_FACTORY, currentRequest, ENCODING);
            } else {
                throw new IOException("Unsupported HTTP method: " + currentRequest.getMethod().name());
            }
        } else if (currentDecoder != null && msg instanceof HttpContent) {
            // received new chunk, give it to the current decoder
            HttpContent chunk = (HttpContent) msg;
            currentDecoder.offer(chunk);
            try {
                while (currentDecoder.hasNext()) {
                    InterfaceHttpData data = currentDecoder.next();
                    if (data.getHttpDataType() == HttpDataType.FileUpload) {
                        DiskFileUpload file = (DiskFileUpload) data;
                        if (file.isCompleted()) {
                            String name = file.getFilename();
                            File target = new File(tmpDir, UUID.randomUUID() + "_" + name);
                            file.renameTo(target);
                            QueryStringEncoder encoder = new QueryStringEncoder(currentRequestPath);
                            encoder.addParam("filepath", target.getAbsolutePath());
                            encoder.addParam("filename", name);
                            currentRequest.setUri(encoder.toString());
                        }
                    }
                    data.release();
                }
            } catch (EndOfDataDecoderException ignored) {
            }
            if (chunk instanceof LastHttpContent) {
                HttpRequest request = currentRequest;
                currentRequest = null;
                currentRequestPath = null;
                currentDecoder.destroy();
                currentDecoder = null;
                // fire next channel handler
                ctx.fireChannelRead(request);
            }
        }
    } catch (Throwable t) {
        currentRequest = null;
        currentRequestPath = null;
        if (currentDecoder != null) {
            currentDecoder.destroy();
            currentDecoder = null;
        }
        if (ctx.channel().isActive()) {
            byte[] bytes = ExceptionUtils.stringifyException(t).getBytes(ENCODING);
            DefaultFullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.INTERNAL_SERVER_ERROR, Unpooled.wrappedBuffer(bytes));
            response.headers().set(HttpHeaders.Names.CONTENT_TYPE, "text/plain");
            response.headers().set(HttpHeaders.Names.CONTENT_LENGTH, response.content().readableBytes());
            ctx.writeAndFlush(response);
        }
    }
}