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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.integration.client;
  
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.util.concurrent.CountDownLatch;
  import java.util.concurrent.TimeUnit;
  
  import org.apache.activemq.artemis.api.core.QueueConfiguration;
  import org.apache.activemq.artemis.api.core.SimpleString;
  import org.apache.activemq.artemis.api.core.client.ClientConsumer;
  import org.apache.activemq.artemis.api.core.client.ClientMessage;
  import org.apache.activemq.artemis.api.core.client.ClientProducer;
  import org.apache.activemq.artemis.api.core.client.ClientSession;
  import org.apache.activemq.artemis.api.core.client.ClientSessionFactory;
  import org.apache.activemq.artemis.api.core.client.MessageHandler;
  import org.apache.activemq.artemis.api.core.client.ServerLocator;
  import org.apache.activemq.artemis.core.server.ActiveMQServer;
  import org.apache.activemq.artemis.tests.util.ActiveMQTestBase;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import java.lang.invoke.MethodHandles;
  
  public class SessionStopStartTest extends ActiveMQTestBase {
  
     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  
     private ActiveMQServer server;
  
     private final SimpleString QUEUE = SimpleString.of("ConsumerTestQueue");
  
     private ServerLocator locator;
  
     @Override
     @BeforeEach
     public void setUp() throws Exception {
        super.setUp();
  
        server = createServer(false);
        server.start();
        locator = createInVMNonHALocator();
     }
  
     @Test
     public void testStopStartConsumerSyncReceiveImmediate() throws Exception {
        ClientSessionFactory sf = createSessionFactory(locator);
  
        final ClientSession session = sf.createSession(false, true, true);
  
        session.createQueue(QueueConfiguration.of(QUEUE).setDurable(false));
  
        ClientProducer producer = session.createProducer(QUEUE);
  
        final int numMessages = 100;
  
        for (int i = 0; i < numMessages; i++) {
           ClientMessage message = createTextMessage(session, "m" + i);
           message.putIntProperty(SimpleString.of("i"), i);
           producer.send(message);
        }
  
        final ClientConsumer consumer = session.createConsumer(QUEUE);
  
        session.start();
  
        for (int i = 0; i < numMessages / 2; i++) {
           ClientMessage cm = consumer.receive(5000);
           assertNotNull(cm);
           cm.acknowledge();
        }
        session.stop();
        ClientMessage cm = consumer.receiveImmediate();
        assertNull(cm);
  
        session.start();
        for (int i = 0; i < numMessages / 2; i++) {
           cm = consumer.receive(5000);
           assertNotNull(cm);
           cm.acknowledge();
        }
  
        session.close();
     }
  
     @Test
     public void testStopStartConsumerSyncReceive() throws Exception {
        ClientSessionFactory sf = createSessionFactory(locator);
  
        final ClientSession session = sf.createSession(false, true, true);
  
        session.createQueue(QueueConfiguration.of(QUEUE).setDurable(false));
  
        ClientProducer producer = session.createProducer(QUEUE);
  
        final int numMessages = 100;
  
        for (int i = 0; i < numMessages; i++) {
           ClientMessage message = createTextMessage(session, "m" + i);
           message.putIntProperty(SimpleString.of("i"), i);
           producer.send(message);
        }
  
        final ClientConsumer consumer = session.createConsumer(QUEUE);
  
        session.start();
  
        for (int i = 0; i < numMessages / 2; i++) {
           ClientMessage cm = consumer.receive(5000);
           assertNotNull(cm);
           cm.acknowledge();
        }
        session.stop();
        long time = System.currentTimeMillis();
        ClientMessage cm = consumer.receive(1000);
        long taken = System.currentTimeMillis() - time;
        assertTrue(taken >= 1000);
        assertNull(cm);
  
        session.start();
        for (int i = 0; i < numMessages / 2; i++) {
           cm = consumer.receive(5000);
           assertNotNull(cm);
           cm.acknowledge();
        }
  
        session.close();
     }
  
     @Test
     public void testStopStartConsumerAsyncSyncStoppedByHandler() throws Exception {
        ClientSessionFactory sf = createSessionFactory(locator);
  
        final ClientSession session = sf.createSession(false, true, true);
  
        session.createQueue(QueueConfiguration.of(QUEUE).setDurable(false));
  
        ClientProducer producer = session.createProducer(QUEUE);
  
        final int numMessages = 100;
  
        for (int i = 0; i < numMessages; i++) {
           ClientMessage message = createTextMessage(session, "m" + i);
           message.putIntProperty(SimpleString.of("i"), i);
           producer.send(message);
        }
  
        final ClientConsumer consumer = session.createConsumer(QUEUE);
  
        session.start();
  
        final CountDownLatch latch = new CountDownLatch(10);
  
        // Message should be in consumer
  
        class MyHandler implements MessageHandler {
  
           boolean failed;
  
           boolean started = true;
  
           int count = 0;
  
           @Override
           public void onMessage(final ClientMessage message) {
  
              try {
                 if (!started) {
                    failed = true;
                 }
  
                 count++;
  
                 if (count == 10) {
                    message.acknowledge();
                    session.stop();
                    started = false;
                 }
  
                 latch.countDown();
              } catch (Exception e) {
              }
           }
        }
  
        MyHandler handler = new MyHandler();
  
        consumer.setMessageHandler(handler);
  
        waitForLatch(latch);
  
        assertFalse(handler.failed);
  
        // Make sure no exceptions were thrown from onMessage
        assertNull(consumer.getLastException());
        consumer.setMessageHandler(null);
        session.start();
        for (int i = 0; i < 90; i++) {
           ClientMessage msg = consumer.receive(1000);
           assertNotNull(msg, "message " + i);
           msg.acknowledge();
        }
  
        assertNull(consumer.receiveImmediate());
  
        session.close();
     }
  
     @Test
     public void testStopStartConsumerAsyncSync() throws Exception {
        ClientSessionFactory sf = createSessionFactory(locator);
  
        final ClientSession session = sf.createSession(false, true, true);
  
        session.createQueue(QueueConfiguration.of(QUEUE).setDurable(false));
  
        ClientProducer producer = session.createProducer(QUEUE);
  
        final int numMessages = 100;
  
        for (int i = 0; i < numMessages; i++) {
           ClientMessage message = createTextMessage(session, "m" + i);
           message.putIntProperty(SimpleString.of("i"), i);
           producer.send(message);
        }
  
        final ClientConsumer consumer = session.createConsumer(QUEUE);
  
        session.start();
  
        final CountDownLatch latch = new CountDownLatch(10);
  
        // Message should be in consumer
  
        class MyHandler implements MessageHandler {
  
           boolean failed;
  
           boolean started = true;
  
           @Override
           public void onMessage(final ClientMessage message) {
  
              try {
                 if (!started) {
                    failed = true;
                 }
  
                 latch.countDown();
  
                 if (latch.getCount() == 0) {
  
                    message.acknowledge();
                    started = false;
                    consumer.setMessageHandler(null);
                 }
  
              } catch (Exception e) {
              }
           }
        }
  
        MyHandler handler = new MyHandler();
  
        consumer.setMessageHandler(handler);
  
        waitForLatch(latch);
  
        try {
           session.stop();
        } catch (Exception e) {
           SessionStopStartTest.logger.warn(e.getMessage(), e);
           throw e;
        }
  
        assertFalse(handler.failed);
  
        // Make sure no exceptions were thrown from onMessage
        assertNull(consumer.getLastException());
        consumer.setMessageHandler(null);
        session.start();
        for (int i = 0; i < 90; i++) {
           ClientMessage msg = consumer.receive(1000);
           assertNotNull(msg, "message " + i);
           msg.acknowledge();
        }
  
        assertNull(consumer.receiveImmediate());
  
        session.close();
     }
  
     @Test
     public void testStopStartConsumerAsyncASyncStoppeeByHandler() throws Exception {
        ClientSessionFactory sf = createSessionFactory(locator);
  
        final ClientSession session = sf.createSession(false, true, true);
  
        session.createQueue(QueueConfiguration.of(QUEUE).setDurable(false));
  
        ClientProducer producer = session.createProducer(QUEUE);
  
        final int numMessages = 100;
  
        for (int i = 0; i < numMessages; i++) {
           ClientMessage message = createTextMessage(session, "m" + i);
           message.putIntProperty(SimpleString.of("i"), i);
           producer.send(message);
        }
  
        final ClientConsumer consumer = session.createConsumer(QUEUE);
  
        session.start();
  
        CountDownLatch latch = new CountDownLatch(10);
  
        // Message should be in consumer
  
        class MyHandler implements MessageHandler {
  
           int messageReceived = 0;
  
           boolean failed;
  
           boolean started = true;
  
           private final CountDownLatch latch;
  
           private boolean stop = true;
  
           MyHandler(final CountDownLatch latch) {
              this.latch = latch;
           }
  
           MyHandler(final CountDownLatch latch, final boolean stop) {
              this(latch);
              this.stop = stop;
           }
  
           @Override
           public void onMessage(final ClientMessage message) {
  
              try {
                 if (!started) {
                    failed = true;
                 }
                 messageReceived++;
                 latch.countDown();
  
                 if (stop && latch.getCount() == 0) {
  
                    message.acknowledge();
                    session.stop();
                    started = false;
                 }
  
              } catch (Exception e) {
              }
           }
        }
  
        MyHandler handler = new MyHandler(latch);
  
        consumer.setMessageHandler(handler);
  
        waitForLatch(latch);
  
        Thread.sleep(100);
  
        assertFalse(handler.failed);
  
        // Make sure no exceptions were thrown from onMessage
        assertNull(consumer.getLastException());
        latch = new CountDownLatch(90);
        handler = new MyHandler(latch, false);
        consumer.setMessageHandler(handler);
        session.start();
        assertTrue(latch.await(5, TimeUnit.SECONDS), "message received " + handler.messageReceived);
  
        Thread.sleep(100);
  
        assertFalse(handler.failed);
        assertNull(consumer.getLastException());
        session.close();
     }
  
     @Test
     public void testStopStartConsumerAsyncASync() throws Exception {
        ClientSessionFactory sf = createSessionFactory(locator);
  
        final ClientSession session = sf.createSession(false, true, true);
  
        session.createQueue(QueueConfiguration.of(QUEUE).setDurable(false));
  
        ClientProducer producer = session.createProducer(QUEUE);
  
        final int numMessages = 100;
  
        for (int i = 0; i < numMessages; i++) {
           ClientMessage message = createTextMessage(session, "m" + i);
           message.putIntProperty(SimpleString.of("i"), i);
           producer.send(message);
        }
  
        final ClientConsumer consumer = session.createConsumer(QUEUE);
  
        session.start();
  
        CountDownLatch latch = new CountDownLatch(10);
  
        // Message should be in consumer
  
        class MyHandler implements MessageHandler {
  
           int messageReceived = 0;
  
           boolean failed;
  
           boolean started = true;
  
           private final CountDownLatch latch;
  
           private boolean stop = true;
  
           MyHandler(final CountDownLatch latch) {
              this.latch = latch;
           }
  
           MyHandler(final CountDownLatch latch, final boolean stop) {
              this(latch);
              this.stop = stop;
           }
  
           @Override
           public void onMessage(final ClientMessage message) {
  
              try {
                 if (!started) {
                    failed = true;
                 }
                 messageReceived++;
                 latch.countDown();
  
                 if (stop && latch.getCount() == 0) {
  
                    message.acknowledge();
                    consumer.setMessageHandler(null);
                    started = false;
                 }
  
              } catch (Exception e) {
              }
           }
        }
  
        MyHandler handler = new MyHandler(latch);
  
        consumer.setMessageHandler(handler);
  
        waitForLatch(latch);
  
        Thread.sleep(100);
  
        assertFalse(handler.failed);
  
        // Make sure no exceptions were thrown from onMessage
        assertNull(consumer.getLastException());
        latch = new CountDownLatch(90);
        handler = new MyHandler(latch, false);
        consumer.setMessageHandler(handler);
        session.start();
        assertTrue(latch.await(5, TimeUnit.SECONDS), "message received " + handler.messageReceived);
  
        Thread.sleep(100);
  
        assertFalse(handler.failed);
        assertNull(consumer.getLastException());
        session.close();
     }
  
     private int getMessageEncodeSize(final SimpleString address) throws Exception {
        ServerLocator locator = createInVMNonHALocator();
        ClientSessionFactory cf = createSessionFactory(locator);
        ClientSession session = cf.createSession(false, true, true);
        ClientMessage message = session.createMessage(false);
        // we need to set the destination so we can calculate the encodesize correctly
        message.setAddress(address);
        int encodeSize = message.getEncodeSize();
        session.close();
        cf.close();
        return encodeSize;
     }
  
     @Test
     public void testStopStartMultipleConsumers() throws Exception {
        locator.setConsumerWindowSize(getMessageEncodeSize(QUEUE) * 33);
        ClientSessionFactory sf = createSessionFactory(locator);
  
        final ClientSession session = sf.createSession(false, true, true);
  
        session.createQueue(QueueConfiguration.of(QUEUE).setDurable(false));
  
        ClientProducer producer = session.createProducer(QUEUE);
  
        final int numMessages = 100;
  
        for (int i = 0; i < numMessages; i++) {
           ClientMessage message = createTextMessage(session, "m" + i);
           message.putIntProperty(SimpleString.of("i"), i);
           producer.send(message);
        }
  
        ClientConsumer consumer = session.createConsumer(QUEUE);
        ClientConsumer consumer2 = session.createConsumer(QUEUE);
        ClientConsumer consumer3 = session.createConsumer(QUEUE);
  
        session.start();
  
        ClientMessage cm = consumer.receive(5000);
        assertNotNull(cm);
        cm.acknowledge();
        cm = consumer2.receive(5000);
        assertNotNull(cm);
        cm.acknowledge();
        cm = consumer3.receive(5000);
        assertNotNull(cm);
        cm.acknowledge();
  
        session.stop();
        cm = consumer.receiveImmediate();
        assertNull(cm);
        cm = consumer2.receiveImmediate();
        assertNull(cm);
        cm = consumer3.receiveImmediate();
        assertNull(cm);
  
        session.start();
        cm = consumer.receive(5000);
        assertNotNull(cm);
        cm = consumer2.receive(5000);
        assertNotNull(cm);
        cm = consumer3.receive(5000);
        assertNotNull(cm);
        session.close();
     }
  
     @Test
     public void testStopStartAlreadyStartedSession() throws Exception {
        ClientSessionFactory sf = createSessionFactory(locator);
  
        final ClientSession session = sf.createSession(false, true, true);
  
        session.createQueue(QueueConfiguration.of(QUEUE).setDurable(false));
  
        ClientProducer producer = session.createProducer(QUEUE);
  
        final int numMessages = 100;
  
        for (int i = 0; i < numMessages; i++) {
           ClientMessage message = createTextMessage(session, "m" + i);
           message.putIntProperty(SimpleString.of("i"), i);
           producer.send(message);
        }
  
        final ClientConsumer consumer = session.createConsumer(QUEUE);
  
        session.start();
  
        for (int i = 0; i < numMessages / 2; i++) {
           ClientMessage cm = consumer.receive(5000);
           assertNotNull(cm);
           cm.acknowledge();
        }
  
        session.start();
        for (int i = 0; i < numMessages / 2; i++) {
           ClientMessage cm = consumer.receive(5000);
           assertNotNull(cm);
           cm.acknowledge();
        }
  
        session.close();
     }
  
     @Test
     public void testStopAlreadyStoppedSession() throws Exception {
        ClientSessionFactory sf = createSessionFactory(locator);
  
        final ClientSession session = sf.createSession(false, true, true);
  
        session.createQueue(QueueConfiguration.of(QUEUE).setDurable(false));
  
        ClientProducer producer = session.createProducer(QUEUE);
  
        final int numMessages = 100;
  
        for (int i = 0; i < numMessages; i++) {
           ClientMessage message = createTextMessage(session, "m" + i);
           message.putIntProperty(SimpleString.of("i"), i);
           producer.send(message);
        }
  
        final ClientConsumer consumer = session.createConsumer(QUEUE);
  
        session.start();
  
        for (int i = 0; i < numMessages / 2; i++) {
           ClientMessage cm = consumer.receive(5000);
           assertNotNull(cm);
           cm.acknowledge();
        }
        session.stop();
        ClientMessage cm = consumer.receiveImmediate();
        assertNull(cm);
  
        session.stop();
        cm = consumer.receiveImmediate();
        assertNull(cm);
  
        session.start();
        for (int i = 0; i < numMessages / 2; i++) {
           cm = consumer.receive(5000);
           assertNotNull(cm);
           cm.acknowledge();
        }
  
        session.close();
     }
  
  }
  