Madan Jampani | 3961b75 | 2016-01-13 13:30:58 -0800 | [diff] [blame^] | 1 | package org.onlab.netty; |
| 2 | |
| 3 | import java.util.Arrays; |
| 4 | import java.util.concurrent.CompletableFuture; |
| 5 | import java.util.concurrent.CountDownLatch; |
| 6 | import java.util.concurrent.ExecutorService; |
| 7 | import java.util.concurrent.Executors; |
| 8 | import java.util.concurrent.atomic.AtomicBoolean; |
| 9 | import java.util.concurrent.atomic.AtomicReference; |
| 10 | import java.util.function.BiFunction; |
| 11 | |
| 12 | import org.junit.After; |
| 13 | import org.junit.Before; |
| 14 | import org.junit.Test; |
| 15 | import org.onlab.packet.IpAddress; |
| 16 | import org.onosproject.store.cluster.messaging.Endpoint; |
| 17 | |
| 18 | import com.google.common.util.concurrent.MoreExecutors; |
| 19 | import com.google.common.util.concurrent.Uninterruptibles; |
| 20 | |
| 21 | import static org.junit.Assert.*; |
| 22 | |
| 23 | /** |
| 24 | * Unit tests for NettyMessaging. |
| 25 | */ |
| 26 | public class NettyMessagingTest { |
| 27 | |
| 28 | NettyMessaging netty1; |
| 29 | NettyMessaging netty2; |
| 30 | |
| 31 | Endpoint ep1 = new Endpoint(IpAddress.valueOf("127.0.0.1"), 5001); |
| 32 | Endpoint ep2 = new Endpoint(IpAddress.valueOf("127.0.0.1"), 5002); |
| 33 | Endpoint invalidEndPoint = new Endpoint(IpAddress.valueOf("127.0.0.1"), 5003); |
| 34 | |
| 35 | @Before |
| 36 | public void setUp() throws Exception { |
| 37 | netty1 = new NettyMessaging(); |
| 38 | netty2 = new NettyMessaging(); |
| 39 | |
| 40 | netty1.start(12, ep1); |
| 41 | netty2.start(12, ep2); |
| 42 | } |
| 43 | |
| 44 | @After |
| 45 | public void tearDown() throws Exception { |
| 46 | if (netty1 != null) { |
| 47 | netty1.stop(); |
| 48 | } |
| 49 | |
| 50 | if (netty2 != null) { |
| 51 | netty2.stop(); |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | @Test |
| 56 | public void testSendAsync() { |
| 57 | CountDownLatch latch1 = new CountDownLatch(1); |
| 58 | CompletableFuture<Void> response = netty1.sendAsync(ep2, "test-subject", "hello world".getBytes()); |
| 59 | response.whenComplete((r, e) -> { |
| 60 | assertNull(e); |
| 61 | latch1.countDown(); |
| 62 | }); |
| 63 | Uninterruptibles.awaitUninterruptibly(latch1); |
| 64 | |
| 65 | CountDownLatch latch2 = new CountDownLatch(1); |
| 66 | response = netty1.sendAsync(invalidEndPoint, "test-subject", "hello world".getBytes()); |
| 67 | response.whenComplete((r, e) -> { |
| 68 | assertNotNull(e); |
| 69 | latch2.countDown(); |
| 70 | }); |
| 71 | Uninterruptibles.awaitUninterruptibly(latch2); |
| 72 | } |
| 73 | |
| 74 | @Test |
| 75 | public void testSendAndReceive() { |
| 76 | AtomicBoolean handlerInvoked = new AtomicBoolean(false); |
| 77 | AtomicReference<byte[]> request = new AtomicReference<>(); |
| 78 | AtomicReference<Endpoint> sender = new AtomicReference<>(); |
| 79 | |
| 80 | BiFunction<Endpoint, byte[], byte[]> handler = (ep, data) -> { |
| 81 | handlerInvoked.set(true); |
| 82 | sender.set(ep); |
| 83 | request.set(data); |
| 84 | return "hello there".getBytes(); |
| 85 | }; |
| 86 | netty2.registerHandler("test-subject", handler, MoreExecutors.directExecutor()); |
| 87 | |
| 88 | CompletableFuture<byte[]> response = netty1.sendAndReceive(ep2, "test-subject", "hello world".getBytes()); |
| 89 | assertTrue(Arrays.equals("hello there".getBytes(), response.join())); |
| 90 | assertTrue(handlerInvoked.get()); |
| 91 | assertTrue(Arrays.equals(request.get(), "hello world".getBytes())); |
| 92 | assertEquals(ep1, sender.get()); |
| 93 | } |
| 94 | |
| 95 | /* |
| 96 | * Supplies executors when registering a handler and calling sendAndReceive and verifies the request handling |
| 97 | * and response completion occurs on the expected thread. |
| 98 | */ |
| 99 | @Test |
| 100 | public void testSendAndReceiveWithExecutor() { |
| 101 | ExecutorService completionExecutor = Executors.newSingleThreadExecutor(r -> new Thread(r, "completion-thread")); |
| 102 | ExecutorService handlerExecutor = Executors.newSingleThreadExecutor(r -> new Thread(r, "handler-thread")); |
| 103 | AtomicReference<String> handlerThreadName = new AtomicReference<>(); |
| 104 | AtomicReference<String> completionThreadName = new AtomicReference<>(); |
| 105 | |
| 106 | BiFunction<Endpoint, byte[], byte[]> handler = (ep, data) -> { |
| 107 | handlerThreadName.set(Thread.currentThread().getName()); |
| 108 | return "hello there".getBytes(); |
| 109 | }; |
| 110 | netty2.registerHandler("test-subject", handler, handlerExecutor); |
| 111 | |
| 112 | CompletableFuture<byte[]> response = netty1.sendAndReceive(ep2, |
| 113 | "test-subject", |
| 114 | "hello world".getBytes(), |
| 115 | completionExecutor); |
| 116 | response.whenComplete((r, e) -> { |
| 117 | completionThreadName.set(Thread.currentThread().getName()); |
| 118 | }); |
| 119 | |
| 120 | // Verify that the message was request handling and response completion happens on the correct thread. |
| 121 | assertTrue(Arrays.equals("hello there".getBytes(), response.join())); |
| 122 | assertEquals("completion-thread", completionThreadName.get()); |
| 123 | assertEquals("handler-thread", handlerThreadName.get()); |
| 124 | } |
| 125 | } |