Examples with HashedWheelTimer io.netty.util.HashedWheelTimer used on opensource projects

Example 1 with HashedWheelTimer

use of io.netty.util.HashedWheelTimer in project pinot by linkedin.

the class NettySingleConnectionIntegrationTest method testServerShutdownLeak.

/*
   * This test attempts to use the connection mechanism the same way as ScatterGatherImpl.SingleRequestHandler does.
   *
   * WARNING: This test has potential failures due to timing.
   */
@Test
public void testServerShutdownLeak() throws Exception {
    final NettyClientMetrics metric = new NettyClientMetrics(null, "abc");
    final Timer timer = new HashedWheelTimer();
    final int minConns = 2;
    final int maxConns = 3;
    // 10M ms.
    final int maxIdleTimeoutMs = 10000000;
    final int maxBacklogPerServer = 1;
    MyServer server = new MyServer();
    Thread.sleep(1000);
    // used as a key to pool. Can be anything.
    final String serverName = "SomeServer";
    final ServerInstance serverInstance = server.getServerInstance();
    final MetricsRegistry metricsRegistry = new MetricsRegistry();
    EventLoopGroup eventLoopGroup = new NioEventLoopGroup();
    PooledNettyClientResourceManager resourceManager = new PooledNettyClientResourceManager(eventLoopGroup, new HashedWheelTimer(), metric);
    ExecutorService executorService = Executors.newCachedThreadPool();
    ScheduledExecutorService timeoutExecutor = new ScheduledThreadPoolExecutor(5);
    AsyncPoolResourceManagerAdapter<ServerInstance, NettyClientConnection> rmAdapter = new AsyncPoolResourceManagerAdapter<ServerInstance, NettyClientConnection>(serverInstance, resourceManager, executorService, metricsRegistry);
    KeyedPool<ServerInstance, NettyClientConnection> keyedPool = new KeyedPoolImpl<ServerInstance, NettyClientConnection>(minConns, maxConns, maxIdleTimeoutMs, maxBacklogPerServer, resourceManager, timeoutExecutor, executorService, metricsRegistry);
    resourceManager.setPool(keyedPool);
    keyedPool.start();
    Field keyedPoolMap = KeyedPoolImpl.class.getDeclaredField("_keyedPool");
    keyedPoolMap.setAccessible(true);
    KeyedFuture<ServerInstance, NettyClientConnection> keyedFuture = keyedPool.checkoutObject(serverInstance);
    // The connection pool for this server is created on demand, so we can now get a reference to the _keyedPool.
    // The act of calling checkoutObject() creates a new AsyncPoolImpl and places a request for a new connection.
    // Since no new connections are available in the beginning, we always end up creating one more than the min.
    Map<ServerInstance, AsyncPool<NettyClientConnection>> poolMap = (Map<ServerInstance, AsyncPool<NettyClientConnection>>) keyedPoolMap.get(keyedPool);
    AsyncPool<NettyClientConnection> asyncPool = poolMap.get(serverInstance);
    Field waiterList = AsyncPoolImpl.class.getDeclaredField("_waiters");
    waiterList.setAccessible(true);
    LinkedDequeue queue = (LinkedDequeue) waiterList.get(asyncPool);
    PoolStats stats;
    // If the number of waiters is = 0, then we will error out because the min connections may not have completed
    // by the time we check one out. If maxWaiters is > 0, then we may end up initiating a fresh connection while the
    // min is still being filled. So, best to sleep a little to make sure that the min pool size is filled out, so that
    // the stats are correct.
    Thread.sleep(2000L);
    stats = asyncPool.getStats();
    Assert.assertEquals(stats.getIdleCount(), minConns);
    Assert.assertEquals(stats.getPoolSize(), minConns + 1);
    NettyClientConnection conn = keyedFuture.getOne();
    LOGGER.debug("Got connection ID " + conn.getConnId());
    Assert.assertEquals(stats.getIdleCount(), minConns);
    Assert.assertEquals(stats.getPoolSize(), minConns + 1);
    // Now get two more connections to the server, since we have 2 idle, we should get those.
    // And leak them.
    keyedFuture = keyedPool.checkoutObject(serverInstance);
    conn = keyedFuture.getOne();
    LOGGER.debug("Got connection ID " + conn.getConnId());
    keyedFuture = keyedPool.checkoutObject(serverInstance);
    conn = keyedFuture.getOne();
    LOGGER.debug("Got connection ID " + conn.getConnId());
    // Now we should have 0 idle, and a pool size of 3 with no waiters.
    stats = asyncPool.getStats();
    Assert.assertEquals(stats.getIdleCount(), 0);
    Assert.assertEquals(stats.getPoolSize(), minConns + 1);
    Assert.assertEquals(queue.size(), 0);
    // Now, we will always get an exception because we don't have a free connection to the server.
    {
        keyedFuture = keyedPool.checkoutObject(serverInstance);
        boolean caughtException = false;
        LOGGER.debug("Will never get a connection here.");
        try {
            conn = keyedFuture.getOne(3, TimeUnit.SECONDS);
        } catch (TimeoutException e) {
            caughtException = true;
        }
        Assert.assertTrue(caughtException);
        keyedFuture.cancel(true);
    }
    // Now if the server goes down, we should release all three connections and be able to get a successful new connection
    LOGGER.info("Shutting down server instance");
    server.shutdown();
    // Give it time to clean up on the client side.
    Thread.sleep(2000L);
    stats = asyncPool.getStats();
    LOGGER.debug(stats.toString());
    // There will be a couple in idleCount in error state.
    Assert.assertEquals(stats.getIdleCount(), minConns);
    Assert.assertEquals(stats.getPoolSize(), minConns);
    LOGGER.debug("Restarting server instance");
    server.restart();
    Thread.sleep(3000);
    LOGGER.debug("Server restart successful\n" + asyncPool.getStats());
    // Now get 3 connections successfully
    for (int i = 0; i < 3; i++) {
        keyedFuture = keyedPool.checkoutObject(serverInstance);
        conn = keyedFuture.getOne();
        Assert.assertNotNull(conn);
    }
    server.shutdown();
}

Example 2 with HashedWheelTimer

use of io.netty.util.HashedWheelTimer in project pinot by linkedin.

the class NettySingleConnectionIntegrationTest method testSingleLargeRequestResponse.

@Test
public /**
   * Test Single Large  ( 2 MB) request response
   * @throws Exception
   */
void testSingleLargeRequestResponse() throws Exception {
    NettyClientMetrics metric = new NettyClientMetrics(null, "abc");
    final String response_prefix = "response_";
    final String response = generatePayload(response_prefix, 1024 * 1024 * 2);
    MyServer server = new MyServer(response);
    Thread.sleep(1000);
    EventLoopGroup eventLoopGroup = new NioEventLoopGroup();
    NettyTCPClientConnection clientConn = new NettyTCPClientConnection(server.getServerInstance(), eventLoopGroup, new HashedWheelTimer(), metric);
    try {
        LOGGER.info("About to connect the client !!");
        boolean connected = clientConn.connect();
        LOGGER.info("Client connected !!");
        Assert.assertTrue(connected, "connected");
        Thread.sleep(1000);
        String request_prefix = "request_";
        String request = generatePayload(request_prefix, 1024 * 1024 * 2);
        LOGGER.info("Sending the request !!");
        ResponseFuture serverRespFuture = clientConn.sendRequest(Unpooled.wrappedBuffer(request.getBytes()), 1L, 5000L);
        LOGGER.info("Request  sent !!");
        ByteBuf serverResp = serverRespFuture.getOne();
        byte[] b2 = new byte[serverResp.readableBytes()];
        serverResp.readBytes(b2);
        String gotResponse = new String(b2);
        Assert.assertTrue(gotResponse.equals(response), "Response Check at client");
        Assert.assertTrue(server.getHandler().getRequest().equals(request), "Request Check at server");
    } finally {
        if (null != clientConn) {
            clientConn.close();
        }
        server.shutdown();
    }
}

Example 3 with HashedWheelTimer

use of io.netty.util.HashedWheelTimer in project pinot by linkedin.

the class NettySingleConnectionIntegrationTest method testConcurrentRequestDispatchError.

@Test
public void testConcurrentRequestDispatchError() throws Exception {
    NettyClientMetrics metric = new NettyClientMetrics(null, "abc");
    CountDownLatch latch = new CountDownLatch(1);
    MyServer server = new MyServer();
    Thread.sleep(1000);
    EventLoopGroup eventLoopGroup = new NioEventLoopGroup();
    NettyTCPClientConnection clientConn = new NettyTCPClientConnection(server.getServerInstance(), eventLoopGroup, new HashedWheelTimer(), metric);
    LOGGER.info("About to connect the client !!");
    boolean connected = clientConn.connect();
    LOGGER.info("Client connected !!");
    Assert.assertTrue(connected, "connected");
    Thread.sleep(1000);
    String request = "dummy request";
    LOGGER.info("Sending the request !!");
    ResponseFuture serverRespFuture = clientConn.sendRequest(Unpooled.wrappedBuffer(request.getBytes()), 1L, 5000L);
    boolean gotException = false;
    try {
        clientConn.sendRequest(Unpooled.wrappedBuffer(request.getBytes()), 1L, 5000L);
    } catch (IllegalStateException ex) {
        gotException = true;
        // Second request should have failed.
        LOGGER.info("got exception ", ex);
    }
    latch.countDown();
    ByteBuf serverResp = serverRespFuture.getOne();
    byte[] b2 = new byte[serverResp.readableBytes()];
    serverResp.readBytes(b2);
    String gotResponse = new String(b2);
    Assert.assertEquals(gotResponse, server.getResponseStr(), "Response Check at client");
    Assert.assertEquals(server.getHandler().getRequest(), request, "Request Check at server");
    clientConn.close();
    server.shutdown();
    Assert.assertTrue(gotException, "GotException ");
}

Example 4 with HashedWheelTimer

use of io.netty.util.HashedWheelTimer in project pinot by linkedin.

the class NettySingleConnectionIntegrationTest method test100LargeRequestResponses.

//@Test
//@Ignore
/**
   * Send 100 large ( 2MB) sized request in sequence. Verify each request and response.
   * @throws Exception
   */
//@Test
public void test100LargeRequestResponses() throws Exception {
    NettyClientMetrics metric = new NettyClientMetrics(null, "abc");
    MyServer server = new MyServer(null);
    EventLoopGroup eventLoopGroup = new NioEventLoopGroup();
    NettyTCPClientConnection clientConn = new NettyTCPClientConnection(server.getServerInstance(), eventLoopGroup, new HashedWheelTimer(), metric);
    LOGGER.info("About to connect the client !!");
    boolean connected = clientConn.connect();
    LOGGER.info("Client connected !!");
    Assert.assertTrue(connected, "connected");
    Thread.sleep(1000);
    try {
        for (int i = 0; i < 100; i++) {
            String request_prefix = "request_";
            String request = generatePayload(request_prefix, 1024 * 1024 * 20);
            String response_prefix = "response_";
            String response = generatePayload(response_prefix, 1024 * 1024 * 20);
            server.getHandler().setResponse(response);
            //LOG.info("Sending the request (" + request + ")");
            ResponseFuture serverRespFuture = clientConn.sendRequest(Unpooled.wrappedBuffer(request.getBytes()), 1L, 5000L);
            //LOG.info("Request  sent !!");
            ByteBuf serverResp = serverRespFuture.getOne();
            byte[] b2 = new byte[serverResp.readableBytes()];
            serverResp.readBytes(b2);
            String gotResponse = new String(b2);
            Assert.assertEquals(gotResponse, response, "Response Check at client");
            Assert.assertEquals(server.getHandler().getRequest(), request, "Request Check at server");
        }
    } finally {
        if (null != clientConn) {
            clientConn.close();
        }
        server.shutdown();
    }
}

Example 5 with HashedWheelTimer

use of io.netty.util.HashedWheelTimer in project pinot by linkedin.

the class ScatterGatherTest method testMultipleServerTimeout.

@Test
public void testMultipleServerTimeout() throws Exception {
    MetricsRegistry registry = new MetricsRegistry();
    // Server start
    int serverPort1 = 7081;
    int serverPort2 = 7082;
    int serverPort3 = 7083;
    // Timeout server
    int serverPort4 = 7084;
    NettyTCPServer server1 = new NettyTCPServer(serverPort1, new TestRequestHandlerFactory(0, 1), null);
    NettyTCPServer server2 = new NettyTCPServer(serverPort2, new TestRequestHandlerFactory(1, 1), null);
    NettyTCPServer server3 = new NettyTCPServer(serverPort3, new TestRequestHandlerFactory(2, 1), null);
    NettyTCPServer server4 = new NettyTCPServer(serverPort4, new TestRequestHandlerFactory(3, 1, 7000, false), null);
    Thread t1 = new Thread(server1);
    Thread t2 = new Thread(server2);
    Thread t3 = new Thread(server3);
    Thread t4 = new Thread(server4);
    t1.start();
    t2.start();
    t3.start();
    t4.start();
    //Client setup
    ScheduledExecutorService timedExecutor = new ScheduledThreadPoolExecutor(1);
    ExecutorService service = new ThreadPoolExecutor(5, 5, 5, TimeUnit.DAYS, new LinkedBlockingDeque<Runnable>());
    EventLoopGroup eventLoopGroup = new NioEventLoopGroup();
    NettyClientMetrics clientMetrics = new NettyClientMetrics(registry, "client_");
    PooledNettyClientResourceManager rm = new PooledNettyClientResourceManager(eventLoopGroup, new HashedWheelTimer(), clientMetrics);
    KeyedPoolImpl<ServerInstance, NettyClientConnection> pool = new KeyedPoolImpl<ServerInstance, NettyClientConnection>(1, 1, 300000, 1, rm, timedExecutor, service, registry);
    rm.setPool(pool);
    SegmentIdSet pg1 = new SegmentIdSet();
    pg1.addSegment(new SegmentId("0"));
    SegmentIdSet pg2 = new SegmentIdSet();
    pg2.addSegment(new SegmentId("1"));
    SegmentIdSet pg3 = new SegmentIdSet();
    pg3.addSegment(new SegmentId("2"));
    SegmentIdSet pg4 = new SegmentIdSet();
    pg4.addSegment(new SegmentId("3"));
    ServerInstance serverInstance1 = new ServerInstance("localhost", serverPort1);
    ServerInstance serverInstance2 = new ServerInstance("localhost", serverPort2);
    ServerInstance serverInstance3 = new ServerInstance("localhost", serverPort3);
    ServerInstance serverInstance4 = new ServerInstance("localhost", serverPort4);
    Map<ServerInstance, SegmentIdSet> pgMap = new HashMap<ServerInstance, SegmentIdSet>();
    pgMap.put(serverInstance1, pg1);
    pgMap.put(serverInstance2, pg2);
    pgMap.put(serverInstance3, pg3);
    pgMap.put(serverInstance4, pg4);
    String request1 = "request_0";
    String request2 = "request_1";
    String request3 = "request_2";
    String request4 = "request_3";
    Map<SegmentIdSet, String> pgMapStr = new HashMap<SegmentIdSet, String>();
    pgMapStr.put(pg1, request1);
    pgMapStr.put(pg2, request2);
    pgMapStr.put(pg3, request3);
    pgMapStr.put(pg4, request4);
    ScatterGatherRequest req = new TestScatterGatherRequest(pgMap, pgMapStr, new RoundRobinReplicaSelection(), ReplicaSelectionGranularity.SEGMENT_ID_SET, 0, 1000);
    ScatterGatherImpl scImpl = new ScatterGatherImpl(pool, service);
    final ScatterGatherStats scatterGatherStats = new ScatterGatherStats();
    BrokerMetrics brokerMetrics = new BrokerMetrics(new MetricsRegistry());
    CompositeFuture<ServerInstance, ByteBuf> fut = scImpl.scatterGather(req, scatterGatherStats, brokerMetrics);
    Map<ServerInstance, ByteBuf> v = fut.get();
    //Only 3 servers return value.
    Assert.assertEquals(v.size(), 3);
    ByteBuf b = v.get(serverInstance1);
    byte[] b2 = new byte[b.readableBytes()];
    b.readBytes(b2);
    String response = new String(b2);
    Assert.assertEquals(response, "response_0_0");
    b = v.get(serverInstance2);
    b2 = new byte[b.readableBytes()];
    b.readBytes(b2);
    response = new String(b2);
    Assert.assertEquals(response, "response_1_0");
    b = v.get(serverInstance3);
    b2 = new byte[b.readableBytes()];
    b.readBytes(b2);
    response = new String(b2);
    Assert.assertEquals(response, "response_2_0");
    //No  response from 4th server
    Assert.assertNull(v.get(serverInstance4), "No response from 4th server");
    Map<ServerInstance, Throwable> errorMap = fut.getError();
    Assert.assertEquals(errorMap.size(), 1, "One error");
    Assert.assertNotNull(errorMap.get(serverInstance4), "Server4 returned timeout");
    Thread.sleep(3000);
    pool.getStats().refresh();
    Assert.assertEquals(pool.getStats().getTotalBadDestroyed(), 1, "Total Bad destroyed");
    pool.shutdown();
    service.shutdown();
    eventLoopGroup.shutdownGracefully();
    server1.shutdownGracefully();
    server2.shutdownGracefully();
    server3.shutdownGracefully();
    server4.shutdownGracefully();
}