Examples with SelectionKey java.nio.channels.SelectionKey used on opensource projects

Example 16 with SelectionKey

use of java.nio.channels.SelectionKey in project jetty.project by eclipse.

the class HTTP2ServerTest method testCommitFailure.

@Test
public void testCommitFailure() throws Exception {
    final long delay = 1000;
    final AtomicBoolean broken = new AtomicBoolean();
    startServer(new HttpServlet() {

        @Override
        protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            try {
                // Wait for the SETTINGS frames to be exchanged.
                Thread.sleep(delay);
                broken.set(true);
            } catch (InterruptedException x) {
                throw new InterruptedIOException();
            }
        }
    });
    server.stop();
    ServerConnector connector2 = new ServerConnector(server, new HTTP2ServerConnectionFactory(new HttpConfiguration())) {

        @Override
        protected ChannelEndPoint newEndPoint(SocketChannel channel, ManagedSelector selectSet, SelectionKey key) throws IOException {
            return new SocketChannelEndPoint(channel, selectSet, key, getScheduler()) {

                @Override
                public void write(Callback callback, ByteBuffer... buffers) throws IllegalStateException {
                    if (broken.get())
                        callback.failed(new IOException("explicitly_thrown_by_test"));
                    else
                        super.write(callback, buffers);
                }
            };
        }
    };
    server.addConnector(connector2);
    server.start();
    ByteBufferPool.Lease lease = new ByteBufferPool.Lease(byteBufferPool);
    generator.control(lease, new PrefaceFrame());
    generator.control(lease, new SettingsFrame(new HashMap<>(), false));
    MetaData.Request metaData = newRequest("GET", new HttpFields());
    generator.control(lease, new HeadersFrame(1, metaData, null, true));
    try (Socket client = new Socket("localhost", connector2.getLocalPort())) {
        OutputStream output = client.getOutputStream();
        for (ByteBuffer buffer : lease.getByteBuffers()) output.write(BufferUtil.toArray(buffer));
        // The server will close the connection abruptly since it
        // cannot write and therefore cannot even send the GO_AWAY.
        Parser parser = new Parser(byteBufferPool, new Parser.Listener.Adapter(), 4096, 8192);
        boolean closed = parseResponse(client, parser, 2 * delay);
        Assert.assertTrue(closed);
    }
}

Example 17 with SelectionKey

use of java.nio.channels.SelectionKey in project jetty.project by eclipse.

the class SelectChannelEndPointTest method testRejectedExecution.

// TODO make this test reliable
@Test
@Ignore
public void testRejectedExecution() throws Exception {
    _manager.stop();
    _threadPool.stop();
    final CountDownLatch latch = new CountDownLatch(1);
    BlockingQueue<Runnable> q = new ArrayBlockingQueue<>(4);
    _threadPool = new QueuedThreadPool(4, 4, 60000, q);
    _manager = new SelectorManager(_threadPool, _scheduler, 1) {

        @Override
        protected EndPoint newEndPoint(SelectableChannel channel, ManagedSelector selector, SelectionKey selectionKey) throws IOException {
            SocketChannelEndPoint endp = new SocketChannelEndPoint(channel, selector, selectionKey, getScheduler());
            _lastEndPoint = endp;
            _lastEndPointLatch.countDown();
            return endp;
        }

        @Override
        public Connection newConnection(SelectableChannel channel, EndPoint endpoint, Object attachment) throws IOException {
            return new TestConnection(endpoint, latch);
        }
    };
    _threadPool.start();
    _manager.start();
    AtomicInteger timeout = new AtomicInteger();
    AtomicInteger rejections = new AtomicInteger();
    AtomicInteger echoed = new AtomicInteger();
    CountDownLatch closed = new CountDownLatch(20);
    for (int i = 0; i < 20; i++) {
        new Thread() {

            public void run() {
                try (Socket client = newClient()) {
                    client.setSoTimeout(5000);
                    SocketChannel server = _connector.accept();
                    server.configureBlocking(false);
                    _manager.accept(server);
                    // Write client to server
                    client.getOutputStream().write("HelloWorld".getBytes(StandardCharsets.UTF_8));
                    client.getOutputStream().flush();
                    client.shutdownOutput();
                    // Verify echo server to client
                    for (char c : "HelloWorld".toCharArray()) {
                        int b = client.getInputStream().read();
                        assertTrue(b > 0);
                        assertEquals(c, (char) b);
                    }
                    assertEquals(-1, client.getInputStream().read());
                    echoed.incrementAndGet();
                } catch (SocketTimeoutException x) {
                    x.printStackTrace();
                    timeout.incrementAndGet();
                } catch (Throwable x) {
                    rejections.incrementAndGet();
                } finally {
                    closed.countDown();
                }
            }
        }.start();
    }
    // unblock the handling
    latch.countDown();
    // wait for all clients to complete or fail
    closed.await();
    // assert some clients must have been rejected
    Assert.assertThat(rejections.get(), Matchers.greaterThan(0));
    // but not all of them
    Assert.assertThat(rejections.get(), Matchers.lessThan(20));
    // none should have timed out
    Assert.assertThat(timeout.get(), Matchers.equalTo(0));
    // and the rest should have worked
    Assert.assertThat(echoed.get(), Matchers.equalTo(20 - rejections.get()));
    // and the selector is still working for new requests
    try (Socket client = newClient()) {
        client.setSoTimeout(5000);
        SocketChannel server = _connector.accept();
        server.configureBlocking(false);
        _manager.accept(server);
        // Write client to server
        client.getOutputStream().write("HelloWorld".getBytes(StandardCharsets.UTF_8));
        client.getOutputStream().flush();
        client.shutdownOutput();
        // Verify echo server to client
        for (char c : "HelloWorld".toCharArray()) {
            int b = client.getInputStream().read();
            assertTrue(b > 0);
            assertEquals(c, (char) b);
        }
        assertEquals(-1, client.getInputStream().read());
    }
}

Example 18 with SelectionKey

use of java.nio.channels.SelectionKey in project Mycat-Server by MyCATApache.

the class NIOAcceptor method run.

@Override
public void run() {
    final Selector tSelector = this.selector;
    for (; ; ) {
        ++acceptCount;
        try {
            tSelector.select(1000L);
            Set<SelectionKey> keys = tSelector.selectedKeys();
            try {
                for (SelectionKey key : keys) {
                    if (key.isValid() && key.isAcceptable()) {
                        accept();
                    } else {
                        key.cancel();
                    }
                }
            } finally {
                keys.clear();
            }
        } catch (Exception e) {
            LOGGER.warn(getName(), e);
        }
    }
}

Example 19 with SelectionKey

use of java.nio.channels.SelectionKey in project Mycat-Server by MyCATApache.

the class NIOSocketWR method disableWrite.

private void disableWrite() {
    try {
        SelectionKey key = this.processKey;
        key.interestOps(key.interestOps() & OP_NOT_WRITE);
    } catch (Exception e) {
        AbstractConnection.LOGGER.warn("can't disable write " + e + " con " + con);
    }
}

Example 20 with SelectionKey

use of java.nio.channels.SelectionKey in project Mycat-Server by MyCATApache.

the class NIOSocketWR method enableRead.

public void enableRead() {
    boolean needWakeup = false;
    try {
        SelectionKey key = this.processKey;
        key.interestOps(key.interestOps() | SelectionKey.OP_READ);
        needWakeup = true;
    } catch (Exception e) {
        AbstractConnection.LOGGER.warn("enable read fail " + e);
    }
    if (needWakeup) {
        processKey.selector().wakeup();
    }
}