| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the License. You may obtain a |
| * copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software distributed under the License |
| * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express |
| * or implied. See the License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package org.apache.geode.distributed.internal.tcpserver; |
| |
| import static org.assertj.core.api.Assertions.assertThat; |
| import static org.assertj.core.api.Assertions.assertThatThrownBy; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertTrue; |
| import static org.mockito.ArgumentMatchers.any; |
| import static org.mockito.Mockito.doAnswer; |
| import static org.mockito.Mockito.doThrow; |
| import static org.mockito.Mockito.mock; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.EOFException; |
| import java.io.IOException; |
| import java.net.ConnectException; |
| import java.net.InetAddress; |
| import java.net.SocketException; |
| import java.net.UnknownHostException; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| import org.apache.geode.internal.serialization.BasicSerializable; |
| import org.apache.geode.internal.serialization.DSFIDSerializer; |
| import org.apache.geode.internal.serialization.DSFIDSerializerFactory; |
| import org.apache.geode.internal.serialization.DeserializationContext; |
| import org.apache.geode.internal.serialization.SerializationContext; |
| import org.apache.geode.logging.internal.executors.LoggingExecutors; |
| import org.apache.geode.test.junit.categories.MembershipTest; |
| |
| @Category({MembershipTest.class}) |
| public class TcpServerJUnitTest { |
| |
| private static final int TIMEOUT = 60 * 1000; |
| private InetAddress localhost; |
| private int port; |
| private TcpServer server; |
| |
| private void startTcpServerWithHandler(TcpHandler handler) throws IOException { |
| localhost = InetAddress.getLocalHost(); |
| |
| DSFIDSerializer serializer = new DSFIDSerializerFactory().create(); |
| server = new TcpServer(port, localhost, handler, |
| "server thread", |
| (x, y, z) -> false, // protobuf hook - not needed here |
| () -> 0, // stats time |
| () -> LoggingExecutors.newCachedThreadPool("test thread", true), |
| null, |
| serializer.getObjectSerializer(), |
| serializer.getObjectDeserializer(), |
| "blahblahblah", |
| "blahblahblah"); |
| server.start(); |
| port = server.getPort(); |
| assertThat(port).isGreaterThan(0); |
| assertThat(server.isShuttingDown()).isFalse(); |
| assertThat(server.getSocketAddress()).isNotNull(); |
| assertThat(server.isAlive()).isTrue(); |
| } |
| |
| @Test |
| public void testConnectToUnknownHost() { |
| final TcpClient tcpClient = createTcpClient(); |
| @SuppressWarnings("deprecation") |
| InfoRequest testInfoRequest = new InfoRequest(); |
| assertThatThrownBy(() -> tcpClient.requestToServer(new HostAndPort("unknown host name", port), |
| testInfoRequest, TIMEOUT)).isInstanceOf(UnknownHostException.class); |
| } |
| |
| @SuppressWarnings("deprecation") |
| @Test |
| public void testClientGetInfo() throws Exception { |
| TcpHandler handler = new InfoRequestHandler(); |
| startTcpServerWithHandler(handler); |
| |
| final TcpClient tcpClient = createTcpClient(); |
| |
| InfoRequest testInfoRequest = new InfoRequest(); |
| InfoResponse testInfoResponse = |
| (InfoResponse) tcpClient.requestToServer(new HostAndPort(localhost.getHostAddress(), port), |
| testInfoRequest, TIMEOUT); |
| assertThat(testInfoResponse.getInfo()[0]).contains("geode-tcp-server"); |
| |
| String[] requestedInfo = tcpClient.getInfo(new HostAndPort(localhost.getHostAddress(), port)); |
| assertNotNull(requestedInfo); |
| assertTrue(requestedInfo.length > 1); |
| assertThat(requestedInfo[0]).contains("geode-tcp-server"); |
| |
| stopServer(tcpClient); |
| } |
| |
| private TcpClient createTcpClient() { |
| DSFIDSerializer serializer = new DSFIDSerializerFactory().create(); |
| TcpSocketCreator socketCreator = new TcpSocketCreatorImpl(); |
| return new TcpClient(socketCreator, |
| serializer.getObjectSerializer(), |
| serializer.getObjectDeserializer(), TcpSocketFactory.DEFAULT); |
| } |
| |
| @Test |
| public void testConcurrency() throws Exception { |
| CountDownLatch latch = new CountDownLatch(1); |
| DelayHandler handler = new DelayHandler(latch); |
| startTcpServerWithHandler(handler); |
| final TcpClient tcpClient = createTcpClient(); |
| |
| final AtomicBoolean done = new AtomicBoolean(); |
| Thread delayedThread = new Thread(() -> { |
| try { |
| tcpClient.requestToServer(new HostAndPort(localhost.getHostAddress(), port), |
| new TestObject(1), |
| TIMEOUT); |
| } catch (IOException | ClassNotFoundException e) { |
| e.printStackTrace(); |
| } |
| done.set(true); |
| }); |
| delayedThread.start(); |
| try { |
| Thread.sleep(500); |
| assertFalse(done.get()); |
| tcpClient.requestToServer(new HostAndPort(localhost.getHostAddress(), port), |
| new TestObject(0), TIMEOUT); |
| assertFalse(done.get()); |
| |
| latch.countDown(); |
| Thread.sleep(500); |
| assertTrue(done.get()); |
| } finally { |
| latch.countDown(); |
| delayedThread.join(TIMEOUT); |
| assertFalse(delayedThread.isAlive()); // GemStoneAddition |
| stopServer(tcpClient); |
| } |
| } |
| |
| @Test |
| public void testNewConnectionsAcceptedAfterSocketException() throws IOException, |
| ClassNotFoundException, InterruptedException { |
| // Initially mock the handler to throw a SocketException. We want to verify that the server |
| // can recover and serve new client requests after a SocketException is thrown. |
| TcpHandler mockTcpHandler = mock(TcpHandler.class); |
| doThrow(SocketException.class).when(mockTcpHandler).processRequest(any(Object.class)); |
| startTcpServerWithHandler(mockTcpHandler); |
| final TcpClient tcpClient = createTcpClient(); |
| |
| // Due to the mocked handler, an EOFException will be thrown on the client. This is expected. |
| assertThatThrownBy( |
| () -> tcpClient.requestToServer(new HostAndPort(localhost.getHostAddress(), port), |
| new TestObject(), TIMEOUT)) |
| .isInstanceOf(EOFException.class); |
| |
| // Change the mock handler behavior to echo the request back |
| doAnswer(invocation -> invocation.getArgument(0)).when(mockTcpHandler) |
| .processRequest(any(Object.class)); |
| |
| // Perform another request and validate that it was served successfully |
| TestObject test = new TestObject(); |
| test.id = 5; |
| TestObject result = |
| (TestObject) tcpClient.requestToServer(new HostAndPort(localhost.getHostAddress(), port), |
| test, TIMEOUT); |
| |
| assertEquals(test.id, result.id); |
| |
| stopServer(tcpClient); |
| } |
| |
| private void stopServer(final TcpClient tcpClient) throws InterruptedException { |
| try { |
| tcpClient.stop(new HostAndPort(localhost.getHostAddress(), port)); |
| } catch (ConnectException ignore) { |
| // must not be running |
| } |
| server.join(TIMEOUT); |
| assertFalse(server.isAlive()); |
| } |
| |
| private static class TestObject implements BasicSerializable { |
| int id; |
| |
| public TestObject() {} |
| |
| public TestObject(int id) { |
| this.id = id; |
| } |
| |
| @Override |
| public void fromData(DataInput in, DeserializationContext context) throws IOException { |
| id = in.readInt(); |
| } |
| |
| @Override |
| public void toData(DataOutput out, SerializationContext context) throws IOException { |
| out.writeInt(id); |
| } |
| |
| } |
| |
| private static class DelayHandler implements TcpHandler { |
| |
| private CountDownLatch latch; |
| |
| public DelayHandler(CountDownLatch latch) { |
| this.latch = latch; |
| } |
| |
| @Override |
| public void init(TcpServer tcpServer) {} |
| |
| @Override |
| public Object processRequest(Object request) { |
| TestObject delay = (TestObject) request; |
| if (delay.id > 0) { |
| try { |
| latch.await(120 * 1000, TimeUnit.MILLISECONDS); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| } |
| } |
| return delay; |
| } |
| |
| @Override |
| public void shutDown() {} |
| |
| @Override |
| public void endRequest(Object request, long startTime) {} |
| |
| @Override |
| public void endResponse(Object request, long startTime) {} |
| } |
| |
| |
| public static class InfoRequestHandler implements TcpHandler { |
| public InfoRequestHandler() {} |
| |
| @SuppressWarnings("deprecation") |
| @Override |
| public Object processRequest(final Object request) { |
| String[] info = new String[2]; |
| info[0] = System.getProperty("user.dir"); |
| info[1] = System.getProperty("java.version"); |
| return new InfoResponse(info); |
| } |
| |
| @Override |
| public void endRequest(final Object request, final long startTime) {} |
| |
| @Override |
| public void endResponse(final Object request, final long startTime) {} |
| |
| @Override |
| public void shutDown() {} |
| |
| @Override |
| public void init(final TcpServer tcpServer) {} |
| } |
| |
| } |