Examples with StreamSinkChannel org.xnio.channels.StreamSinkChannel used on opensource projects

Example 6 with StreamSinkChannel

use of org.xnio.channels.StreamSinkChannel in project undertow by undertow-io.

the class AsyncSenderImpl method invokeOnComplete.

/**
     * Invokes the onComplete method. If send is called again in onComplete then
     * we loop and write it out. This prevents possible stack overflows due to recursion
     */
private void invokeOnComplete() {
    for (; ; ) {
        if (pooledBuffers != null) {
            for (PooledByteBuffer buffer : pooledBuffers) {
                buffer.close();
            }
            pooledBuffers = null;
        }
        IoCallback callback = this.callback;
        this.buffer = null;
        this.fileChannel = null;
        this.callback = null;
        inCallback = true;
        try {
            callback.onComplete(exchange, this);
        } finally {
            inCallback = false;
        }
        StreamSinkChannel channel = this.channel;
        if (this.buffer != null) {
            long t = Buffers.remaining(buffer);
            final long total = t;
            long written = 0;
            try {
                do {
                    long res = channel.write(buffer);
                    written += res;
                    if (res == 0) {
                        if (writeListener == null) {
                            initWriteListener();
                        }
                        channel.getWriteSetter().set(writeListener);
                        channel.resumeWrites();
                        return;
                    }
                } while (written < total);
            //we loop and invoke onComplete again
            } catch (IOException e) {
                invokeOnException(callback, e);
            }
        } else if (this.fileChannel != null) {
            if (transferTask == null) {
                transferTask = new TransferTask();
            }
            if (!transferTask.run(false)) {
                return;
            }
        } else {
            return;
        }
    }
}

Example 7 with StreamSinkChannel

use of org.xnio.channels.StreamSinkChannel in project undertow by undertow-io.

the class AsyncSenderImpl method close.

@Override
public void close(final IoCallback callback) {
    try {
        StreamSinkChannel channel = this.channel;
        if (channel == null) {
            if (exchange.getResponseContentLength() == -1 && !exchange.getResponseHeaders().contains(Headers.TRANSFER_ENCODING)) {
                exchange.setResponseContentLength(0);
            }
            this.channel = channel = exchange.getResponseChannel();
            if (channel == null) {
                throw UndertowMessages.MESSAGES.responseChannelAlreadyProvided();
            }
        }
        channel.shutdownWrites();
        if (!channel.flush()) {
            channel.getWriteSetter().set(ChannelListeners.flushingChannelListener(new ChannelListener<StreamSinkChannel>() {

                @Override
                public void handleEvent(final StreamSinkChannel channel) {
                    if (callback != null) {
                        callback.onComplete(exchange, AsyncSenderImpl.this);
                    }
                }
            }, new ChannelExceptionHandler<StreamSinkChannel>() {

                @Override
                public void handleException(final StreamSinkChannel channel, final IOException exception) {
                    try {
                        if (callback != null) {
                            invokeOnException(callback, exception);
                        }
                    } finally {
                        IoUtils.safeClose(channel);
                    }
                }
            }));
            channel.resumeWrites();
        } else {
            if (callback != null) {
                callback.onComplete(exchange, this);
            }
        }
    } catch (IOException e) {
        if (callback != null) {
            invokeOnException(callback, e);
        }
    }
}

Example 8 with StreamSinkChannel

use of org.xnio.channels.StreamSinkChannel in project undertow by undertow-io.

the class UndertowOutputStream method write.

/**
     * {@inheritDoc}
     */
public void write(final byte[] b, final int off, final int len) throws IOException {
    if (len < 1) {
        return;
    }
    if (Thread.currentThread() == exchange.getIoThread()) {
        throw UndertowMessages.MESSAGES.blockingIoFromIOThread();
    }
    if (anyAreSet(state, FLAG_CLOSED)) {
        throw UndertowMessages.MESSAGES.streamIsClosed();
    }
    //if this is the last of the content
    ByteBuffer buffer = buffer();
    if (len == contentLength - written || buffer.remaining() < len) {
        if (buffer.remaining() < len) {
            //so what we have will not fit.
            //We allocate multiple buffers up to MAX_BUFFERS_TO_ALLOCATE
            //and put it in them
            //if it still dopes not fit we loop, re-using these buffers
            StreamSinkChannel channel = this.channel;
            if (channel == null) {
                this.channel = channel = exchange.getResponseChannel();
            }
            final ByteBufferPool bufferPool = exchange.getConnection().getByteBufferPool();
            ByteBuffer[] buffers = new ByteBuffer[MAX_BUFFERS_TO_ALLOCATE + 1];
            PooledByteBuffer[] pooledBuffers = new PooledByteBuffer[MAX_BUFFERS_TO_ALLOCATE];
            try {
                buffers[0] = buffer;
                int bytesWritten = 0;
                int rem = buffer.remaining();
                buffer.put(b, bytesWritten + off, rem);
                buffer.flip();
                bytesWritten += rem;
                int bufferCount = 1;
                for (int i = 0; i < MAX_BUFFERS_TO_ALLOCATE; ++i) {
                    PooledByteBuffer pooled = bufferPool.allocate();
                    pooledBuffers[bufferCount - 1] = pooled;
                    buffers[bufferCount++] = pooled.getBuffer();
                    ByteBuffer cb = pooled.getBuffer();
                    int toWrite = len - bytesWritten;
                    if (toWrite > cb.remaining()) {
                        rem = cb.remaining();
                        cb.put(b, bytesWritten + off, rem);
                        cb.flip();
                        bytesWritten += rem;
                    } else {
                        cb.put(b, bytesWritten + off, len - bytesWritten);
                        bytesWritten = len;
                        cb.flip();
                        break;
                    }
                }
                Channels.writeBlocking(channel, buffers, 0, bufferCount);
                while (bytesWritten < len) {
                    //ok, it did not fit, loop and loop and loop until it is done
                    bufferCount = 0;
                    for (int i = 0; i < MAX_BUFFERS_TO_ALLOCATE + 1; ++i) {
                        ByteBuffer cb = buffers[i];
                        cb.clear();
                        bufferCount++;
                        int toWrite = len - bytesWritten;
                        if (toWrite > cb.remaining()) {
                            rem = cb.remaining();
                            cb.put(b, bytesWritten + off, rem);
                            cb.flip();
                            bytesWritten += rem;
                        } else {
                            cb.put(b, bytesWritten + off, len - bytesWritten);
                            bytesWritten = len;
                            cb.flip();
                            break;
                        }
                    }
                    Channels.writeBlocking(channel, buffers, 0, bufferCount);
                }
                buffer.clear();
            } finally {
                for (int i = 0; i < pooledBuffers.length; ++i) {
                    PooledByteBuffer p = pooledBuffers[i];
                    if (p == null) {
                        break;
                    }
                    p.close();
                }
            }
        } else {
            buffer.put(b, off, len);
            if (buffer.remaining() == 0) {
                writeBufferBlocking(false);
            }
        }
    } else {
        buffer.put(b, off, len);
        if (buffer.remaining() == 0) {
            writeBufferBlocking(false);
        }
    }
    updateWritten(len);
}

Example 9 with StreamSinkChannel

use of org.xnio.channels.StreamSinkChannel in project undertow by undertow-io.

the class HttpContinue method createResponseSender.

/**
     * Creates a response sender that can be used to send a HTTP 100-continue response.
     *
     * @param exchange The exchange
     * @return The response sender
     */
public static ContinueResponseSender createResponseSender(final HttpServerExchange exchange) throws IOException {
    if (!exchange.isResponseChannelAvailable()) {
        throw UndertowMessages.MESSAGES.cannotSendContinueResponse();
    }
    if (exchange.getAttachment(ALREADY_SENT) != null) {
        return new ContinueResponseSender() {

            @Override
            public boolean send() throws IOException {
                return true;
            }

            @Override
            public void awaitWritable() throws IOException {
            }

            @Override
            public void awaitWritable(long time, TimeUnit timeUnit) throws IOException {
            }
        };
    }
    HttpServerExchange newExchange = exchange.getConnection().sendOutOfBandResponse(exchange);
    exchange.putAttachment(ALREADY_SENT, true);
    newExchange.setStatusCode(StatusCodes.CONTINUE);
    newExchange.getResponseHeaders().put(Headers.CONTENT_LENGTH, 0);
    final StreamSinkChannel responseChannel = newExchange.getResponseChannel();
    return new ContinueResponseSender() {

        boolean shutdown = false;

        @Override
        public boolean send() throws IOException {
            if (!shutdown) {
                shutdown = true;
                responseChannel.shutdownWrites();
            }
            return responseChannel.flush();
        }

        @Override
        public void awaitWritable() throws IOException {
            responseChannel.awaitWritable();
        }

        @Override
        public void awaitWritable(final long time, final TimeUnit timeUnit) throws IOException {
            responseChannel.awaitWritable(time, timeUnit);
        }
    };
}

Example 10 with StreamSinkChannel

use of org.xnio.channels.StreamSinkChannel in project spring-framework by spring-projects.

the class UndertowXhrTransport method createReceiveCallback.

private ClientCallback<ClientExchange> createReceiveCallback(final TransportRequest transportRequest, final URI url, final HttpHeaders headers, final XhrClientSockJsSession sockJsSession, final SettableListenableFuture<WebSocketSession> connectFuture) {
    return new ClientCallback<ClientExchange>() {

        @Override
        public void completed(final ClientExchange exchange) {
            exchange.setResponseListener(new ClientCallback<ClientExchange>() {

                @Override
                public void completed(ClientExchange result) {
                    ClientResponse response = result.getResponse();
                    if (response.getResponseCode() != 200) {
                        HttpStatus status = HttpStatus.valueOf(response.getResponseCode());
                        IoUtils.safeClose(result.getConnection());
                        onFailure(new HttpServerErrorException(status, "Unexpected XHR receive status"));
                    } else {
                        SockJsResponseListener listener = new SockJsResponseListener(transportRequest, result.getConnection(), url, headers, sockJsSession, connectFuture);
                        listener.setup(result.getResponseChannel());
                    }
                    if (logger.isTraceEnabled()) {
                        logger.trace("XHR receive headers: " + toHttpHeaders(response.getResponseHeaders()));
                    }
                    try {
                        StreamSinkChannel channel = result.getRequestChannel();
                        channel.shutdownWrites();
                        if (!channel.flush()) {
                            channel.getWriteSetter().set(ChannelListeners.<StreamSinkChannel>flushingChannelListener(null, null));
                            channel.resumeWrites();
                        }
                    } catch (IOException exc) {
                        IoUtils.safeClose(result.getConnection());
                        onFailure(exc);
                    }
                }

                @Override
                public void failed(IOException exc) {
                    IoUtils.safeClose(exchange.getConnection());
                    onFailure(exc);
                }
            });
        }

        @Override
        public void failed(IOException exc) {
            onFailure(exc);
        }

        private void onFailure(Throwable failure) {
            if (connectFuture.setException(failure)) {
                return;
            }
            if (sockJsSession.isDisconnected()) {
                sockJsSession.afterTransportClosed(null);
            } else {
                sockJsSession.handleTransportError(failure);
                sockJsSession.afterTransportClosed(new CloseStatus(1006, failure.getMessage()));
            }
        }
    };
}