Example usage for io.netty.handler.codec.http HttpResponseStatus NOT_EXTENDED

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Prototype

HttpResponseStatus NOT_EXTENDED

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Document

510 Not Extended (RFC2774)

Usage

From source file:io.urmia.api.handler.RestApiHandler.java

License:Open Source License

@Override
protected void channelRead0(ChannelHandlerContext ctx, HttpObject msg) throws Exception {

    if (msg instanceof HttpRequest) {

        if (requestState != RequestState.EXPECT_REQUEST) {
            sendError(ctx, ERROR_BAD_REQUEST);
            return;
        }/*  ww  w.  ja  v  a2 s  . c  o  m*/

        request = (HttpRequest) msg;

        log.info("received HttpRequest: {} {}", request.getMethod(), request.getUri());

        final ObjectRequest r;

        try {
            r = new ObjectRequest(request);
        } catch (ExceptionInInitializerError e) {
            log.warn("unable to parse the request into a command: {}", request.getUri());
            return;
        }

        objectRequest = r;
        httpRequest = request;

        if (HttpMethod.PUT.equals(request.getMethod())) {
            if (objectRequest.isNotDirectory()) // make dir request
                setupProxyToPUT(ctx, objectRequest);

            requestState = RequestState.EXPECT_CONTENT_OR_LAST;
        } else {
            requestState = RequestState.EXPECT_LAST;
            ctx.read();
        }

        return;
    }

    if (objectRequest == null) {
        String uri = request == null ? "" : request.getUri();
        log.warn("not expecting an empty objectRequest. parse error maybe: {}", uri);
        ByteBuf body = request == null || request.getMethod().equals(HttpMethod.HEAD) ? null
                : errorBody("ResourceNotFoundError", uri + " does not exist");
        sendError(ctx, HttpResponseStatus.NOT_FOUND, body);
        return;
    }

    if (msg instanceof HttpContent) {

        if (requestState != RequestState.EXPECT_LAST && requestState != RequestState.EXPECT_CONTENT_OR_LAST) {
            log.warn("not expecting LAST or CONTENT, requestState: {}", requestState);
            sendError(ctx, HttpResponseStatus.NOT_EXTENDED);
            return;
        }

        final boolean last = msg instanceof LastHttpContent;
        final boolean emptyLast = last && msg == LastHttpContent.EMPTY_LAST_CONTENT;

        if (proxyMode && !emptyLast) // todo: the emptyLast was added for mln
            ctx.fireChannelRead(msg);

        // example of reading only if at the end
        if (last) {

            log.debug("received LastHttpContent: {}", msg);
            requestState = RequestState.EXPECT_REQUEST;

            final HttpRequest request = httpRequest;

            if (HttpMethod.HEAD.equals(request.getMethod())) {
                handleHEAD(ctx, objectRequest);
                return;
            }

            if (HttpMethod.GET.equals(request.getMethod())) {
                handleGET(ctx, objectRequest);
                return;
            }

            if (HttpMethod.DELETE.equals(request.getMethod())) {
                handleDELETE(ctx, objectRequest);
                return;
            }

            if (HttpMethod.PUT.equals(request.getMethod())) {
                if (proxyMode)
                    log.info("finished file upload: {}", objectRequest);
                else
                    handlePUTmkdir(ctx, objectRequest);
                return;
            }

            log.warn("unknown request: {}", request);
            sendError(ctx, HttpResponseStatus.BAD_REQUEST);
        }

        return;
    }

    log.warn("unexpected msg type: {}", msg);
    sendError(ctx, HttpResponseStatus.BAD_REQUEST);
}

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