/**
 * 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.proxy;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerPlugin;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.TransportConnector;
import org.apache.activemq.security.AuthenticationUser;
import org.apache.activemq.security.SimpleAuthenticationPlugin;
import org.apache.activemq.util.Wait;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.JMSSecurityException;
import javax.jms.Session;
import java.net.URI;
import java.util.ArrayList;
import java.util.List;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;

public class AMQ4889Test {

   protected static final Logger LOG = LoggerFactory.getLogger(AMQ4889Test.class);

   public static final String USER = "user";
   public static final String GOOD_USER_PASSWORD = "password";
   public static final String WRONG_PASSWORD = "wrongPassword";
   public static final String PROXY_URI = "tcp://localhost:6002";
   public static final String LOCAL_URI = "tcp://localhost:6001";

   protected BrokerService brokerService;
   private ProxyConnector proxyConnector;
   protected TransportConnector transportConnector;
   protected ConnectionFactory connectionFactory;

   private static final Integer ITERATIONS = 100;

   protected BrokerService createBroker() throws Exception {
      brokerService = new BrokerService();
      brokerService.setPersistent(false);

      ArrayList<BrokerPlugin> plugins = new ArrayList<BrokerPlugin>();
      BrokerPlugin authenticationPlugin = configureAuthentication();
      plugins.add(authenticationPlugin);
      BrokerPlugin[] array = new BrokerPlugin[plugins.size()];
      brokerService.setPlugins(plugins.toArray(array));

      transportConnector = brokerService.addConnector(LOCAL_URI);
      proxyConnector = new ProxyConnector();
      proxyConnector.setName("proxy");
      proxyConnector.setBind(new URI(PROXY_URI));
      proxyConnector.setRemote(new URI(LOCAL_URI));
      brokerService.addProxyConnector(proxyConnector);

      brokerService.start();
      brokerService.waitUntilStarted();

      return brokerService;
   }

   protected BrokerPlugin configureAuthentication() throws Exception {
      List<AuthenticationUser> users = new ArrayList<AuthenticationUser>();
      users.add(new AuthenticationUser(USER, GOOD_USER_PASSWORD, "users"));
      SimpleAuthenticationPlugin authenticationPlugin = new SimpleAuthenticationPlugin(users);

      return authenticationPlugin;
   }

   @Before
   public void setUp() throws Exception {
      brokerService = createBroker();
      connectionFactory = new ActiveMQConnectionFactory(PROXY_URI);
   }

   @After
   public void tearDown() throws Exception {
      brokerService.stop();
      brokerService.waitUntilStopped();
   }

   @Test(timeout = 1 * 60 * 1000)
   public void testForConnectionLeak() throws Exception {
      Integer expectedConnectionCount = 0;
      for (int i = 0; i < ITERATIONS; i++) {
         try {
            if (i % 2 == 0) {
               LOG.debug("Iteration {} adding bad connection", i);
               Connection connection = connectionFactory.createConnection(USER, WRONG_PASSWORD);
               Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
               fail("createSession should fail");
            }
            else {
               LOG.debug("Iteration {} adding good connection", i);
               Connection connection = connectionFactory.createConnection(USER, GOOD_USER_PASSWORD);
               Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
               expectedConnectionCount++;
            }
            //
         }
         catch (JMSSecurityException e) {
         }
         LOG.debug("Iteration {} Connections? {}", i, proxyConnector.getConnectionCount());
      }
      final Integer val = expectedConnectionCount;
      Wait.waitFor(new Wait.Condition() {
         @Override
         public boolean isSatisified() throws Exception {
            return val.equals(proxyConnector.getConnectionCount());
         }
      }, 20);
      assertEquals(val, proxyConnector.getConnectionCount());
   }
}
