Examples with KvStateRequestResult org.apache.flink.runtime.query.netty.message.KvStateRequestResult used on opensource projects

Example 1 with KvStateRequestResult

use of org.apache.flink.runtime.query.netty.message.KvStateRequestResult in project flink by apache.

the class KvStateClientHandler method channelRead.

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    try {
        ByteBuf buf = (ByteBuf) msg;
        KvStateRequestType msgType = KvStateRequestSerializer.deserializeHeader(buf);
        if (msgType == KvStateRequestType.REQUEST_RESULT) {
            KvStateRequestResult result = KvStateRequestSerializer.deserializeKvStateRequestResult(buf);
            callback.onRequestResult(result.getRequestId(), result.getSerializedResult());
        } else if (msgType == KvStateRequestType.REQUEST_FAILURE) {
            KvStateRequestFailure failure = KvStateRequestSerializer.deserializeKvStateRequestFailure(buf);
            callback.onRequestFailure(failure.getRequestId(), failure.getCause());
        } else if (msgType == KvStateRequestType.SERVER_FAILURE) {
            throw KvStateRequestSerializer.deserializeServerFailure(buf);
        } else {
            throw new IllegalStateException("Unexpected response type '" + msgType + "'");
        }
    } catch (Throwable t1) {
        try {
            callback.onFailure(t1);
        } catch (Throwable t2) {
            LOG.error("Failed to notify callback about failure", t2);
        }
    } finally {
        ReferenceCountUtil.release(msg);
    }
}

Example 2 with KvStateRequestResult

use of org.apache.flink.runtime.query.netty.message.KvStateRequestResult 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 3 with KvStateRequestResult

use of org.apache.flink.runtime.query.netty.message.KvStateRequestResult in project flink by apache.

the class KvStateServerHandlerTest method testSimpleQuery.

/**
	 * Tests a simple successful query via an EmbeddedChannel.
	 */
@Test
public void testSimpleQuery() throws Exception {
    KvStateRegistry registry = new KvStateRegistry();
    AtomicKvStateRequestStats stats = new AtomicKvStateRequestStats();
    KvStateServerHandler handler = new KvStateServerHandler(registry, TEST_THREAD_POOL, stats);
    EmbeddedChannel channel = new EmbeddedChannel(getFrameDecoder(), handler);
    // Register state
    ValueStateDescriptor<Integer> desc = new ValueStateDescriptor<>("any", IntSerializer.INSTANCE);
    desc.setQueryable("vanilla");
    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(dummyEnv.getJobID(), dummyEnv.getJobVertexId()));
    final TestRegistryListener registryListener = new TestRegistryListener();
    registry.registerListener(registryListener);
    // Update the KvState and request it
    int expectedValue = 712828289;
    int key = 99812822;
    backend.setCurrentKey(key);
    ValueState<Integer> state = backend.getPartitionedState(VoidNamespace.INSTANCE, VoidNamespaceSerializer.INSTANCE, desc);
    state.update(expectedValue);
    byte[] serializedKeyAndNamespace = KvStateRequestSerializer.serializeKeyAndNamespace(key, IntSerializer.INSTANCE, VoidNamespace.INSTANCE, VoidNamespaceSerializer.INSTANCE);
    long requestId = Integer.MAX_VALUE + 182828L;
    assertTrue(registryListener.registrationName.equals("vanilla"));
    ByteBuf request = KvStateRequestSerializer.serializeKvStateRequest(channel.alloc(), requestId, registryListener.kvStateId, serializedKeyAndNamespace);
    // Write the request and wait for the response
    channel.writeInbound(request);
    ByteBuf buf = (ByteBuf) readInboundBlocking(channel);
    // skip frame length
    buf.skipBytes(4);
    // Verify the response
    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);
    assertEquals(stats.toString(), 1, stats.getNumRequests());
    // Wait for async successful request report
    long deadline = System.nanoTime() + TimeUnit.NANOSECONDS.convert(30, TimeUnit.SECONDS);
    while (stats.getNumSuccessful() != 1 && System.nanoTime() <= deadline) {
        Thread.sleep(10);
    }
    assertEquals(stats.toString(), 1, stats.getNumSuccessful());
}