Examples with Channel io.netty.channel.Channel used on opensource projects

Example 11 with Channel

use of io.netty.channel.Channel in project flink by apache.

the class KvStateClientTest method testServerClosesChannel.

/**
	 * Tests that a server channel close, closes the connection and removes it
	 * from the established connections.
	 */
@Test
public void testServerClosesChannel() throws Exception {
    Deadline deadline = TEST_TIMEOUT.fromNow();
    AtomicKvStateRequestStats stats = new AtomicKvStateRequestStats();
    KvStateClient client = null;
    Channel serverChannel = null;
    try {
        client = new KvStateClient(1, stats);
        final AtomicBoolean received = new AtomicBoolean();
        final AtomicReference<Channel> channel = new AtomicReference<>();
        serverChannel = createServerChannel(new ChannelInboundHandlerAdapter() {

            @Override
            public void channelActive(ChannelHandlerContext ctx) throws Exception {
                channel.set(ctx.channel());
            }

            @Override
            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                received.set(true);
            }
        });
        KvStateServerAddress serverAddress = getKvStateServerAddress(serverChannel);
        // Requests
        Future<byte[]> future = client.getKvState(serverAddress, new KvStateID(), new byte[0]);
        while (!received.get() && deadline.hasTimeLeft()) {
            Thread.sleep(50);
        }
        assertTrue("Receive timed out", received.get());
        assertEquals(1, stats.getNumConnections());
        channel.get().close().await(deadline.timeLeft().toMillis(), TimeUnit.MILLISECONDS);
        try {
            Await.result(future, deadline.timeLeft());
            fail("Did not throw expected server failure");
        } catch (ClosedChannelException ignored) {
        // Expected
        }
        assertEquals(0, stats.getNumConnections());
        // Counts can take some time to propagate
        while (deadline.hasTimeLeft() && (stats.getNumSuccessful() != 0 || stats.getNumFailed() != 1)) {
            Thread.sleep(100);
        }
        assertEquals(1, stats.getNumRequests());
        assertEquals(0, stats.getNumSuccessful());
        assertEquals(1, stats.getNumFailed());
    } finally {
        if (client != null) {
            client.shutDown();
        }
        if (serverChannel != null) {
            serverChannel.close();
        }
        assertEquals("Channel leak", 0, stats.getNumConnections());
    }
}

Example 12 with Channel

use of io.netty.channel.Channel in project flink by apache.

the class KvStateServerTest method testSimpleRequest.

/**
	 * Tests a simple successful query via a SocketChannel.
	 */
@Test
public void testSimpleRequest() throws Exception {
    KvStateServer server = null;
    Bootstrap bootstrap = null;
    try {
        KvStateRegistry registry = new KvStateRegistry();
        KvStateRequestStats stats = new AtomicKvStateRequestStats();
        server = new KvStateServer(InetAddress.getLocalHost(), 0, 1, 1, registry, stats);
        server.start();
        KvStateServerAddress serverAddress = server.getAddress();
        int numKeyGroups = 1;
        AbstractStateBackend abstractBackend = new MemoryStateBackend();
        DummyEnvironment dummyEnv = new DummyEnvironment("test", 1, 0);
        dummyEnv.setKvStateRegistry(registry);
        AbstractKeyedStateBackend<Integer> backend = abstractBackend.createKeyedStateBackend(dummyEnv, new JobID(), "test_op", IntSerializer.INSTANCE, numKeyGroups, new KeyGroupRange(0, 0), registry.createTaskRegistry(new JobID(), new JobVertexID()));
        final KvStateServerHandlerTest.TestRegistryListener registryListener = new KvStateServerHandlerTest.TestRegistryListener();
        registry.registerListener(registryListener);
        ValueStateDescriptor<Integer> desc = new ValueStateDescriptor<>("any", IntSerializer.INSTANCE);
        desc.setQueryable("vanilla");
        ValueState<Integer> state = backend.getPartitionedState(VoidNamespace.INSTANCE, VoidNamespaceSerializer.INSTANCE, desc);
        // Update KvState
        int expectedValue = 712828289;
        int key = 99812822;
        backend.setCurrentKey(key);
        state.update(expectedValue);
        // Request
        byte[] serializedKeyAndNamespace = KvStateRequestSerializer.serializeKeyAndNamespace(key, IntSerializer.INSTANCE, VoidNamespace.INSTANCE, VoidNamespaceSerializer.INSTANCE);
        // Connect to the server
        final BlockingQueue<ByteBuf> responses = new LinkedBlockingQueue<>();
        bootstrap = createBootstrap(new LengthFieldBasedFrameDecoder(Integer.MAX_VALUE, 0, 4, 0, 4), new ChannelInboundHandlerAdapter() {

            @Override
            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                responses.add((ByteBuf) msg);
            }
        });
        Channel channel = bootstrap.connect(serverAddress.getHost(), serverAddress.getPort()).sync().channel();
        long requestId = Integer.MAX_VALUE + 182828L;
        assertTrue(registryListener.registrationName.equals("vanilla"));
        ByteBuf request = KvStateRequestSerializer.serializeKvStateRequest(channel.alloc(), requestId, registryListener.kvStateId, serializedKeyAndNamespace);
        channel.writeAndFlush(request);
        ByteBuf buf = responses.poll(TIMEOUT_MILLIS, TimeUnit.MILLISECONDS);
        assertEquals(KvStateRequestType.REQUEST_RESULT, KvStateRequestSerializer.deserializeHeader(buf));
        KvStateRequestResult response = KvStateRequestSerializer.deserializeKvStateRequestResult(buf);
        assertEquals(requestId, response.getRequestId());
        int actualValue = KvStateRequestSerializer.deserializeValue(response.getSerializedResult(), IntSerializer.INSTANCE);
        assertEquals(expectedValue, actualValue);
    } finally {
        if (server != null) {
            server.shutDown();
        }
        if (bootstrap != null) {
            EventLoopGroup group = bootstrap.group();
            if (group != null) {
                group.shutdownGracefully();
            }
        }
    }
}

Example 13 with Channel

use of io.netty.channel.Channel in project netty by netty.

the class Http2MultiplexCodecTest method channelReadShouldRespectAutoRead.

@Test
public void channelReadShouldRespectAutoRead() {
    LastInboundHandler inboundHandler = streamActiveAndWriteHeaders(streamId);
    Channel childChannel = inboundHandler.channel();
    assertTrue(childChannel.config().isAutoRead());
    Http2HeadersFrame headersFrame = inboundHandler.readInbound();
    assertNotNull(headersFrame);
    childChannel.config().setAutoRead(false);
    parentChannel.pipeline().fireChannelRead(new DefaultHttp2DataFrame(bb("hello world"), false).streamId(streamId));
    parentChannel.pipeline().fireChannelReadComplete();
    Http2DataFrame dataFrame0 = inboundHandler.readInbound();
    assertNotNull(dataFrame0);
    release(dataFrame0);
    parentChannel.pipeline().fireChannelRead(new DefaultHttp2DataFrame(bb("foo"), false).streamId(streamId));
    parentChannel.pipeline().fireChannelRead(new DefaultHttp2DataFrame(bb("bar"), true).streamId(streamId));
    parentChannel.pipeline().fireChannelReadComplete();
    dataFrame0 = inboundHandler.readInbound();
    assertNull(dataFrame0);
    childChannel.config().setAutoRead(true);
    verifyFramesMultiplexedToCorrectChannel(streamId, inboundHandler, 2);
}

Example 14 with Channel

use of io.netty.channel.Channel in project netty by netty.

the class Http2MultiplexCodecTest method outboundStreamShouldWriteResetFrameOnClose_headersSent.

@Test
public void outboundStreamShouldWriteResetFrameOnClose_headersSent() {
    childChannelInitializer.handler = new ChannelInboundHandlerAdapter() {

        @Override
        public void channelActive(ChannelHandlerContext ctx) throws Exception {
            ctx.writeAndFlush(new DefaultHttp2HeadersFrame(new DefaultHttp2Headers()));
            ctx.fireChannelActive();
        }
    };
    Http2StreamChannelBootstrap b = new Http2StreamChannelBootstrap();
    b.parentChannel(parentChannel).handler(childChannelInitializer);
    Channel childChannel = b.connect().channel();
    assertTrue(childChannel.isActive());
    Http2HeadersFrame headersFrame = parentChannel.readOutbound();
    assertNotNull(headersFrame);
    assertFalse(Http2CodecUtil.isStreamIdValid(headersFrame.streamId()));
    parentChannel.pipeline().fireUserEventTriggered(new Http2StreamActiveEvent(2, headersFrame));
    childChannel.close();
    parentChannel.runPendingTasks();
    Http2ResetFrame reset = parentChannel.readOutbound();
    assertEquals(2, reset.streamId());
    assertEquals(Http2Error.CANCEL.code(), reset.errorCode());
}

Example 15 with Channel

use of io.netty.channel.Channel in project netty by netty.

the class Http2MultiplexCodecTest method outboundStreamShouldWriteGoAwayWithoutReset.

@Test
public void outboundStreamShouldWriteGoAwayWithoutReset() {
    childChannelInitializer.handler = new ChannelInboundHandlerAdapter() {

        @Override
        public void channelActive(ChannelHandlerContext ctx) throws Exception {
            ctx.writeAndFlush(new DefaultHttp2GoAwayFrame(Http2Error.NO_ERROR));
            ctx.fireChannelActive();
        }
    };
    Http2StreamChannelBootstrap b = new Http2StreamChannelBootstrap();
    b.parentChannel(parentChannel).handler(childChannelInitializer);
    Channel childChannel = b.connect().channel();
    assertTrue(childChannel.isActive());
    Http2GoAwayFrame goAwayFrame = parentChannel.readOutbound();
    assertNotNull(goAwayFrame);
    goAwayFrame.release();
    childChannel.close();
    parentChannel.runPendingTasks();
    Http2ResetFrame reset = parentChannel.readOutbound();
    assertNull(reset);
}