Examples with KvStateRequestStats org.apache.flink.queryablestate.network.stats.KvStateRequestStats used on opensource projects

Example 1 with KvStateRequestStats

use of org.apache.flink.queryablestate.network.stats.KvStateRequestStats in project flink by apache.

the class KvStateServerHandlerTest method testChunkedResponse.

/**
 * Tests that large responses are chunked.
 */
@Test
public void testChunkedResponse() throws Exception {
    KvStateRegistry registry = new KvStateRegistry();
    KvStateRequestStats stats = new AtomicKvStateRequestStats();
    MessageSerializer<KvStateInternalRequest, KvStateResponse> serializer = new MessageSerializer<>(new KvStateInternalRequest.KvStateInternalRequestDeserializer(), new KvStateResponse.KvStateResponseDeserializer());
    KvStateServerHandler handler = new KvStateServerHandler(testServer, registry, serializer, stats);
    EmbeddedChannel channel = new EmbeddedChannel(getFrameDecoder(), handler);
    int numKeyGroups = 1;
    AbstractStateBackend abstractBackend = new MemoryStateBackend();
    DummyEnvironment dummyEnv = new DummyEnvironment("test", 1, 0);
    dummyEnv.setKvStateRegistry(registry);
    AbstractKeyedStateBackend<Integer> backend = createKeyedStateBackend(registry, numKeyGroups, abstractBackend, dummyEnv);
    final TestRegistryListener registryListener = new TestRegistryListener();
    registry.registerListener(dummyEnv.getJobID(), registryListener);
    // Register state
    ValueStateDescriptor<byte[]> desc = new ValueStateDescriptor<>("any", BytePrimitiveArraySerializer.INSTANCE);
    desc.setQueryable("vanilla");
    ValueState<byte[]> state = backend.getPartitionedState(VoidNamespace.INSTANCE, VoidNamespaceSerializer.INSTANCE, desc);
    // Update KvState
    byte[] bytes = new byte[2 * channel.config().getWriteBufferHighWaterMark()];
    byte current = 0;
    for (int i = 0; i < bytes.length; i++) {
        bytes[i] = current++;
    }
    int key = 99812822;
    backend.setCurrentKey(key);
    state.update(bytes);
    // Request
    byte[] serializedKeyAndNamespace = KvStateSerializer.serializeKeyAndNamespace(key, IntSerializer.INSTANCE, VoidNamespace.INSTANCE, VoidNamespaceSerializer.INSTANCE);
    long requestId = Integer.MAX_VALUE + 182828L;
    assertTrue(registryListener.registrationName.equals("vanilla"));
    KvStateInternalRequest request = new KvStateInternalRequest(registryListener.kvStateId, serializedKeyAndNamespace);
    ByteBuf serRequest = MessageSerializer.serializeRequest(channel.alloc(), requestId, request);
    // Write the request and wait for the response
    channel.writeInbound(serRequest);
    Object msg = readInboundBlocking(channel);
    assertTrue("Not ChunkedByteBuf", msg instanceof ChunkedByteBuf);
    ((ChunkedByteBuf) msg).close();
}

Example 2 with KvStateRequestStats

use of org.apache.flink.queryablestate.network.stats.KvStateRequestStats in project flink by apache.

the class KvStateServerTest method testSimpleRequest.

/**
 * Tests a simple successful query via a SocketChannel.
 */
@Test
public void testSimpleRequest() throws Throwable {
    KvStateServerImpl server = null;
    Bootstrap bootstrap = null;
    try {
        KvStateRegistry registry = new KvStateRegistry();
        KvStateRequestStats stats = new AtomicKvStateRequestStats();
        server = new KvStateServerImpl(InetAddress.getLocalHost().getHostName(), Collections.singletonList(0).iterator(), 1, 1, registry, stats);
        server.start();
        InetSocketAddress serverAddress = server.getServerAddress();
        int numKeyGroups = 1;
        AbstractStateBackend abstractBackend = new MemoryStateBackend();
        DummyEnvironment dummyEnv = new DummyEnvironment("test", 1, 0);
        dummyEnv.setKvStateRegistry(registry);
        final JobID jobId = new JobID();
        AbstractKeyedStateBackend<Integer> backend = abstractBackend.createKeyedStateBackend(dummyEnv, jobId, "test_op", IntSerializer.INSTANCE, numKeyGroups, new KeyGroupRange(0, 0), registry.createTaskRegistry(jobId, new JobVertexID()), TtlTimeProvider.DEFAULT, new UnregisteredMetricsGroup(), Collections.emptyList(), new CloseableRegistry());
        final KvStateServerHandlerTest.TestRegistryListener registryListener = new KvStateServerHandlerTest.TestRegistryListener();
        registry.registerListener(jobId, 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 = KvStateSerializer.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.getAddress(), serverAddress.getPort()).sync().channel();
        long requestId = Integer.MAX_VALUE + 182828L;
        assertTrue(registryListener.registrationName.equals("vanilla"));
        final KvStateInternalRequest request = new KvStateInternalRequest(registryListener.kvStateId, serializedKeyAndNamespace);
        ByteBuf serializeRequest = MessageSerializer.serializeRequest(channel.alloc(), requestId, request);
        channel.writeAndFlush(serializeRequest);
        ByteBuf buf = responses.poll(TIMEOUT_MILLIS, TimeUnit.MILLISECONDS);
        assertEquals(MessageType.REQUEST_RESULT, MessageSerializer.deserializeHeader(buf));
        assertEquals(requestId, MessageSerializer.getRequestId(buf));
        KvStateResponse response = server.getSerializer().deserializeResponse(buf);
        int actualValue = KvStateSerializer.deserializeValue(response.getContent(), IntSerializer.INSTANCE);
        assertEquals(expectedValue, actualValue);
    } finally {
        if (server != null) {
            server.shutdown();
        }
        if (bootstrap != null) {
            EventLoopGroup group = bootstrap.group();
            if (group != null) {
                // note: no "quiet period" to not trigger Netty#4357
                group.shutdownGracefully(0, 10, TimeUnit.SECONDS);
            }
        }
    }
}