content: /*
   * 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 java.util.concurrent.atomic.AtomicBoolean;
  
  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.ServerLocator;
  import org.apache.activemq.artemis.core.config.Configuration;
  import org.apache.activemq.artemis.core.server.ActiveMQServer;
  import org.apache.activemq.artemis.core.server.Queue;
  import org.apache.activemq.artemis.tests.util.ActiveMQTestBase;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  public class ReceiveImmediateTest extends ActiveMQTestBase {
  
     private ActiveMQServer server;
  
     private final SimpleString QUEUE = SimpleString.of("ReceiveImmediateTest.queue");
  
     private final SimpleString ADDRESS = SimpleString.of("ReceiveImmediateTest.address");
  
     private ServerLocator locator;
  
     @Override
     @BeforeEach
     public void setUp() throws Exception {
        super.setUp();
        Configuration config = createDefaultInVMConfig();
        server = createServer(false, config);
        server.start();
        locator = createInVMNonHALocator();
     }
  
     private ClientSessionFactory sf;
  
     @Test
     public void testConsumerReceiveImmediateWithNoMessages() throws Exception {
        doConsumerReceiveImmediateWithNoMessages(false);
     }
  
     @Test
     public void testConsumerReceiveImmediate() throws Exception {
        doConsumerReceiveImmediate(false);
     }
  
     @Test
     public void testBrowserReceiveImmediateWithNoMessages() throws Exception {
        doConsumerReceiveImmediateWithNoMessages(true);
     }
  
     @Test
     public void testBrowserReceiveImmediate() throws Exception {
        doConsumerReceiveImmediate(true);
     }
  
     @Test
     public void testConsumerReceiveImmediateWithSessionStop() throws Exception {
        locator.setBlockOnNonDurableSend(true).setBlockOnAcknowledge(true).setAckBatchSize(0);
  
        sf = createSessionFactory(locator);
        ClientSession session = sf.createSession(false, true, true);
  
        session.createQueue(QueueConfiguration.of(QUEUE).setAddress(ADDRESS).setDurable(false));
  
        ClientConsumer consumer = session.createConsumer(QUEUE, null, false);
        session.start();
  
        session.stop();
        assertNull(consumer.receiveImmediate());
  
        session.start();
        long start = System.currentTimeMillis();
        ClientMessage msg = consumer.receive(2000);
        long end = System.currentTimeMillis();
        assertNull(msg);
        // we waited for at least 2000ms
        assertTrue(end - start >= 2000, "waited only " + (end - start));
  
        consumer.close();
  
        session.close();
     }
  
     @Test
     public void testReceivedImmediateFollowedByReceive() throws Exception {
        locator.setBlockOnNonDurableSend(true);
        sf = createSessionFactory(locator);
  
        ClientSession session = sf.createSession(false, true, true);
  
        session.createQueue(QueueConfiguration.of(QUEUE).setAddress(ADDRESS).setDurable(false));
  
        ClientProducer producer = session.createProducer(ADDRESS);
  
        ClientMessage message = session.createMessage(false);
  
        producer.send(message);
  
        ClientConsumer consumer = session.createConsumer(QUEUE, null, false);
  
        session.start();
  
        ClientMessage received = consumer.receiveImmediate();
  
        assertNotNull(received);
  
        received.acknowledge();
  
        received = consumer.receive(1);
  
        assertNull(received);
  
        session.close();
     }
  
     @Test
     public void testReceivedImmediateFollowedByAsyncConsume() throws Exception {
  
        locator.setBlockOnNonDurableSend(true);
        sf = createSessionFactory(locator);
  
        ClientSession session = sf.createSession(false, true, true);
  
        session.createQueue(QueueConfiguration.of(QUEUE).setAddress(ADDRESS).setDurable(false));
  
        ClientProducer producer = session.createProducer(ADDRESS);
  
        ClientMessage message = session.createMessage(false);
  
        producer.send(message);
  
        ClientConsumer consumer = session.createConsumer(QUEUE, null, false);
  
        session.start();
  
        ClientMessage received = consumer.receiveImmediate();
  
        assertNotNull(received);
  
        received.acknowledge();
  
        final AtomicBoolean receivedAsync = new AtomicBoolean(false);
  
        consumer.setMessageHandler(message1 -> receivedAsync.set(true));
  
        Thread.sleep(1000);
  
        assertFalse(receivedAsync.get());
  
        session.close();
     }
  
     private void doConsumerReceiveImmediateWithNoMessages(final boolean browser) throws Exception {
        locator.setBlockOnNonDurableSend(true).setBlockOnAcknowledge(true).setAckBatchSize(0);
  
        sf = createSessionFactory(locator);
  
        ClientSession session = sf.createSession(false, true, false);
  
        session.createQueue(QueueConfiguration.of(QUEUE).setAddress(ADDRESS).setDurable(false));
  
        ClientConsumer consumer = session.createConsumer(QUEUE, null, browser);
        session.start();
  
        ClientMessage message = consumer.receiveImmediate();
        assertNull(message);
  
        session.close();
     }
  
     private void doConsumerReceiveImmediate(final boolean browser) throws Exception {
        locator.setBlockOnNonDurableSend(true).setBlockOnAcknowledge(true).setAckBatchSize(0);
  
        sf = createSessionFactory(locator);
        ClientSession session = sf.createSession(false, true, true);
  
        session.createQueue(QueueConfiguration.of(QUEUE).setAddress(ADDRESS).setDurable(false));
  
        ClientProducer producer = session.createProducer(ADDRESS);
  
        final int numMessages = 100;
  
        for (int i = 0; i < numMessages; i++) {
           ClientMessage message = createTextMessage(session, "m" + i);
           producer.send(message);
        }
  
        ClientConsumer consumer = session.createConsumer(QUEUE, null, browser);
        session.start();
  
        for (int i = 0; i < numMessages; i++) {
           ClientMessage message2 = consumer.receiveImmediate();
           assertNotNull(message2, "did not receive message " + i);
           assertEquals("m" + i, message2.getBodyBuffer().readString());
           if (!browser) {
              message2.acknowledge();
           }
        }
  
        assertEquals(0, ((Queue) server.getPostOffice().getBinding(QUEUE).getBindable()).getDeliveringCount());
  
        assertNull(consumer.receiveImmediate());
  
        assertEquals(0, ((Queue) server.getPostOffice().getBinding(QUEUE).getBindable()).getDeliveringCount());
        int messagesOnServer = browser ? numMessages : 0;
        assertEquals(messagesOnServer, getMessageCount(((Queue) server.getPostOffice().getBinding(QUEUE).getBindable())));
  
        consumer.close();
  
        session.close();
     }
  
  }
  