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.jndi;
  
  import javax.naming.Context;
  import javax.naming.InitialContext;
  import java.util.Hashtable;
  import java.util.UUID;
  
  import org.junit.jupiter.api.Test;
  
  import static org.apache.activemq.artemis.jndi.ActiveMQInitialContextFactory.DYNAMIC_QUEUE_CONTEXT;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  
  public class JndiTest {
  
     @Test
     public void testMultiThreadedDynamicQueueLookup() throws Exception {
        final int nThreads = 10;
  
        LookerUpper[] lookerUppers = new LookerUpper[nThreads];
        for (int j = 0; j < 100; j++) {
           Hashtable<String, String> props = new Hashtable<>();
           props.put(Context.INITIAL_CONTEXT_FACTORY, "org.apache.activemq.artemis.jndi.ActiveMQInitialContextFactory");
           InitialContext context = new InitialContext(props);
           String lookup = DYNAMIC_QUEUE_CONTEXT + "/" + UUID.randomUUID().toString();
  
           for (int i = 0; i < nThreads; i++) {
              lookerUppers[i] = new LookerUpper(context, lookup);
           }
  
           for (int i = 0; i < nThreads; i++) {
              lookerUppers[i].start();
           }
  
           for (LookerUpper lookerUpper : lookerUppers) {
              lookerUpper.join();
              assertFalse(lookerUpper.failed);
           }
           context.close();
        }
     }
  
     class LookerUpper extends Thread {
        InitialContext context;
        String lookup;
        boolean failed = false;
  
        LookerUpper(InitialContext context, String lookup) throws Exception {
           this.context = context;
           this.lookup = lookup;
        }
  
        @Override
        public void run() {
           try {
              context.lookup(lookup);
           } catch (Throwable e) {
              failed = true;
           }
        }
     }
  }
  