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   * 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.activemq.artemis.tests.stress.stomp;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.net.Socket;
  import java.nio.charset.StandardCharsets;
  import java.util.HashMap;
  import java.util.Map;
  
  import org.apache.activemq.artemis.api.core.QueueConfiguration;
  import org.apache.activemq.artemis.api.core.TransportConfiguration;
  import org.apache.activemq.artemis.core.config.Configuration;
  import org.apache.activemq.artemis.core.protocol.stomp.Stomp;
  import org.apache.activemq.artemis.core.protocol.stomp.StompProtocolManagerFactory;
  import org.apache.activemq.artemis.core.remoting.impl.invm.InVMAcceptorFactory;
  import org.apache.activemq.artemis.core.remoting.impl.netty.NettyAcceptorFactory;
  import org.apache.activemq.artemis.core.remoting.impl.netty.TransportConstants;
  import org.apache.activemq.artemis.core.server.ActiveMQServer;
  import org.apache.activemq.artemis.core.server.ActiveMQServers;
  import org.apache.activemq.artemis.tests.util.ActiveMQTestBase;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  public class StompStressTest extends ActiveMQTestBase {
  
     private static final int COUNT = 1000;
  
     private final int port = 61613;
  
     private Socket stompSocket;
  
     private ByteArrayOutputStream inputBuffer;
  
     private final String destination = "stomp.stress.queue";
  
     private ActiveMQServer server;
  
     @Test
     public void testSendAndReceiveMessage() throws Exception {
        String frame = "CONNECT\n" + "login: brianm\n" + "passcode: wombats\n\n" + Stomp.NULL;
        sendFrame(frame);
  
        frame = receiveFrame(10000);
        assertTrue(frame.startsWith("CONNECTED"));
  
        frame = "SUBSCRIBE\n" + "destination:" + destination + "\n" + "ack:auto\n\n" + Stomp.NULL;
        sendFrame(frame);
  
        frame = "SEND\n" + "destination:" + destination + "\n";
  
        for (int i = 0; i < COUNT; i++) {
           System.out.println(">>> " + i);
           sendFrame(frame + "count:" + i + "\n\n" + Stomp.NULL);
        }
  
        for (int i = 0; i < COUNT; i++) {
           System.out.println("<<< " + i);
           frame = receiveFrame(10000);
           assertTrue(frame.startsWith("MESSAGE"));
           assertTrue(frame.indexOf("destination:") > 0);
           assertTrue(frame.indexOf("count:" + i) > 0);
        }
  
        frame = "DISCONNECT\n" + "\n\n" + Stomp.NULL;
        sendFrame(frame);
     }
  
     // Implementation methods
     // -------------------------------------------------------------------------
     @Override
     @BeforeEach
     public void setUp() throws Exception {
        super.setUp();
  
        server = createServer();
        server.start();
  
        stompSocket = createSocket();
        inputBuffer = new ByteArrayOutputStream();
     }
  
     private ActiveMQServer createServer() throws Exception {
        Map<String, Object> params = new HashMap<>();
        params.put(TransportConstants.PROTOCOLS_PROP_NAME, StompProtocolManagerFactory.STOMP_PROTOCOL_NAME);
        params.put(TransportConstants.PORT_PROP_NAME, TransportConstants.DEFAULT_STOMP_PORT);
        TransportConfiguration stompTransport = new TransportConfiguration(NettyAcceptorFactory.class.getName(), params);
  
        Configuration config = createBasicConfig().setPersistenceEnabled(false).addAcceptorConfiguration(stompTransport).addAcceptorConfiguration(new TransportConfiguration(InVMAcceptorFactory.class.getName())).addQueueConfiguration(QueueConfiguration.of(destination).setDurable(false));
  
        return addServer(ActiveMQServers.newActiveMQServer(config));
     }
  
     @Override
     @AfterEach
     public void tearDown() throws Exception {
        if (stompSocket != null) {
           stompSocket.close();
        }
        super.tearDown();
     }
  
     protected Socket createSocket() throws IOException {
        return new Socket("127.0.0.1", port);
     }
  
     public void sendFrame(String data) throws Exception {
        byte[] bytes = data.getBytes(StandardCharsets.UTF_8);
        OutputStream outputStream = stompSocket.getOutputStream();
        for (byte b : bytes) {
           outputStream.write(b);
        }
        outputStream.flush();
     }
  
     public void sendFrame(byte[] data) throws Exception {
        OutputStream outputStream = stompSocket.getOutputStream();
        for (byte element : data) {
           outputStream.write(element);
        }
        outputStream.flush();
     }
  
     public String receiveFrame(long timeOut) throws Exception {
        stompSocket.setSoTimeout((int) timeOut);
        InputStream is = stompSocket.getInputStream();
        int c = 0;
        for (;;) {
           c = is.read();
           if (c < 0) {
              throw new IOException("socket closed.");
           } else if (c == 0) {
              c = is.read();
              if (c != '\n') {
                 byte[] ba = inputBuffer.toByteArray();
                 System.out.println(new String(ba, StandardCharsets.UTF_8));
              }
              assertEquals('\n', c, "Expecting stomp frame to terminate with \0\n");
              byte[] ba = inputBuffer.toByteArray();
              inputBuffer.reset();
              return new String(ba, StandardCharsets.UTF_8);
           } else {
              inputBuffer.write(c);
           }
        }
     }
  }
  