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 * 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.
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package org.apache.activemq.artemis.tests.integration.jms.connection;

import javax.jms.Queue;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

import org.apache.activemq.artemis.api.core.BroadcastEndpoint;
import org.apache.activemq.artemis.api.core.BroadcastEndpointFactory;
import org.apache.activemq.artemis.api.core.ChannelBroadcastEndpointFactory;
import org.apache.activemq.artemis.api.core.DiscoveryGroupConfiguration;
import org.apache.activemq.artemis.api.core.JGroupsFileBroadcastEndpointFactory;
import org.apache.activemq.artemis.api.jms.JMSFactoryType;
import org.apache.activemq.artemis.core.config.Configuration;
import org.apache.activemq.artemis.jms.client.ActiveMQConnectionFactory;
import org.apache.activemq.artemis.tests.util.JMSTestBase;
import org.jgroups.JChannel;
import org.jgroups.conf.PlainConfigurator;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;

public class ConnectionFactoryWithJGroupsSerializationTest extends JMSTestBase {

   protected static ActiveMQConnectionFactory jmsCf1;
   protected static ActiveMQConnectionFactory jmsCf2;

   private final String jgroupsConfigString = "UDP(oob_thread_pool.max_threads=300;" + "bind_addr=127.0.0.1;oob_thread_pool.keep_alive_time=1000;" + "max_bundle_size=31k;mcast_send_buf_size=640000;" + "internal_thread_pool.keep_alive_time=60000;" + "internal_thread_pool.rejection_policy=discard;" + "mcast_recv_buf_size=25000000;bind_port=55200;" + "internal_thread_pool.queue_max_size=100;" + "mcast_port=45688;thread_pool.min_threads=20;" + "oob_thread_pool.rejection_policy=discard;" + "thread_pool.max_threads=300;enable_diagnostics=false;" + "thread_pool.enabled=true;internal_thread_pool.queue_enabled=true;" + "ucast_recv_buf_size=20000000;ucast_send_buf_size=640000;" + "internal_thread_pool.enabled=true;oob_thread_pool.enabled=true;" + "ip_ttl=2;thread_pool.rejection_policy=discard;thread_pool.keep_alive_time=5000;" + "internal_thread_pool.max_threads=10;thread_pool.queue_enabled=true;" + "mcast_addr=230.0.0.4;singleton_name=udp;max_bundle_timeout=30;" + "oob_thread_pool.queue_enabled=false;internal_thread_pool.min_threads=1;" + "bundler_type=old;oob_thread_pool.min_threads=20;" + "thread_pool.queue_max_size=1000):PING(num_initial_members=3;" + "timeout=2000):MERGE3(min_interval=20000;max_interval=100000)" + ":FD_SOCK(bind_addr=127.0.0.1;start_port=54200):FD_ALL(interval=3000;" + "timeout=15000):VERIFY_SUSPECT(bind_addr=127.0.0.1;" + "timeout=1500):pbcast.NAKACK2(max_msg_batch_size=100;" + "xmit_table_msgs_per_row=10000;xmit_table_max_compaction_time=10000;" + "xmit_table_num_rows=100;xmit_interval=1000):UNICAST3(xmit_table_msgs_per_row=10000;" + "xmit_table_max_compaction_time=10000;xmit_table_num_rows=20)" + ":pbcast.STABLE(desired_avg_gossip=50000;max_bytes=400000;" + "stability_delay=1000):pbcast.GMS(print_local_addr=true;" + "view_bundling=true;join_timeout=3000;view_ack_collection_timeout=5000;" + "resume_task_timeout=7500):UFC(max_credits=1m;min_threshold=0.40)" + ":MFC(max_credits=1m;min_threshold=0.40):FRAG2(frag_size=30k)" + ":RSVP(resend_interval=500;ack_on_delivery=false;timeout=60000)";

   JChannel channel = null;
   Queue testQueue = null;

   @Override
   @Before
   public void setUp() throws Exception {
      try {
         super.setUp();

         PlainConfigurator configurator = new PlainConfigurator(jgroupsConfigString);
         channel = new JChannel(configurator);

         String channelName1 = "channel1";
         String channelName2 = "channel2";

         BroadcastEndpointFactory jgroupsBroadcastCfg1 = new ChannelBroadcastEndpointFactory(channel, channelName1);
         BroadcastEndpointFactory jgroupsBroadcastCfg2 = new JGroupsFileBroadcastEndpointFactory().setChannelName(channelName2).setFile(jgroupsConfigString);

         DiscoveryGroupConfiguration dcConfig1 = new DiscoveryGroupConfiguration().setName("dg1").setRefreshTimeout(5000).setDiscoveryInitialWaitTimeout(5000).setBroadcastEndpointFactory(jgroupsBroadcastCfg1);

         DiscoveryGroupConfiguration dcConfig2 = new DiscoveryGroupConfiguration().setName("dg2").setRefreshTimeout(5000).setDiscoveryInitialWaitTimeout(5000).setBroadcastEndpointFactory(jgroupsBroadcastCfg2);

         jmsServer.getActiveMQServer().getConfiguration().getDiscoveryGroupConfigurations().put(dcConfig1.getName(), dcConfig1);
         jmsServer.getActiveMQServer().getConfiguration().getDiscoveryGroupConfigurations().put(dcConfig2.getName(), dcConfig2);

         jmsServer.createConnectionFactory("ConnectionFactory1", false, JMSFactoryType.CF, dcConfig1.getName(), "/ConnectionFactory1");

         jmsServer.createConnectionFactory("ConnectionFactory2", false, JMSFactoryType.CF, dcConfig2.getName(), "/ConnectionFactory2");

         testQueue = createQueue("testQueueFor1389");
      } catch (Exception e) {
         e.printStackTrace();
         throw e;
      }
   }

   // Public --------------------------------------------------------

   //HORNETQ-1389
   //Here we deploy two Connection Factories with JGroups discovery groups.
   //The first one uses a runtime JChannel object, which is the case before the fix.
   //The second one uses the raw jgroups config string, which is the case after fix.
   //So the first one will get serialization exception in the test
   //while the second will not.
   @Test
   public void testSerialization() throws Exception {
      jmsCf1 = (ActiveMQConnectionFactory) namingContext.lookup("/ConnectionFactory1");
      jmsCf2 = (ActiveMQConnectionFactory) namingContext.lookup("/ConnectionFactory2");

      try {
         serialize(jmsCf1);
      } catch (java.io.NotSerializableException e) {
         //this is expected
      }

      //now cf2 should be OK
      byte[] x = serialize(jmsCf2);
      ActiveMQConnectionFactory jmsCf2Copy = deserialize(x, ActiveMQConnectionFactory.class);
      assertNotNull(jmsCf2Copy);
      BroadcastEndpointFactory broadcastEndpoint = jmsCf2Copy.getDiscoveryGroupConfiguration().getBroadcastEndpointFactory();
      assertTrue(broadcastEndpoint instanceof JGroupsFileBroadcastEndpointFactory);
   }

   @Test
   public void testCopyConfiguration() throws Exception {
      Assert.assertEquals(2, jmsServer.getActiveMQServer().getConfiguration().getDiscoveryGroupConfigurations().size());
      Configuration copiedconfig = jmsServer.getActiveMQServer().getConfiguration().copy();
      Assert.assertEquals(2, copiedconfig.getDiscoveryGroupConfigurations().size());
   }

   @Override
   @After
   public void tearDown() throws Exception {
      // small hack, the channel here is cached, so checking that it's not closed by any endpoint
      BroadcastEndpoint broadcastEndpoint = jmsServer.getActiveMQServer().getConfiguration().getDiscoveryGroupConfigurations().get("dg1").getBroadcastEndpointFactory().createBroadcastEndpoint();
      broadcastEndpoint.close(true);
      if (channel != null) {
         assertFalse(channel.isClosed());
         channel.close();
      }

      super.tearDown();
   }

   private static <T extends Serializable> byte[] serialize(T obj) throws IOException {
      ByteArrayOutputStream baos = new ByteArrayOutputStream();
      ObjectOutputStream oos = new ObjectOutputStream(baos);
      oos.writeObject(obj);
      oos.close();
      return baos.toByteArray();
   }

   private static <T extends Serializable> T deserialize(byte[] b,
                                                         Class<T> cl) throws IOException, ClassNotFoundException {
      ByteArrayInputStream bais = new ByteArrayInputStream(b);
      ObjectInputStream ois = new ObjectInputStream(bais);
      Object o = ois.readObject();
      return cl.cast(o);
   }

}
