/**
 * 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.usecases;

import org.apache.activemq.broker.jmx.DurableSubscriptionViewMBean;
import org.apache.activemq.broker.jmx.TopicViewMBean;
import org.apache.activemq.util.Wait;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.jms.Connection;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.management.ObjectName;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import static org.junit.Assert.*;

@RunWith(value = Parameterized.class)
public class DurableSubscriptionOffline2Test extends DurableSubscriptionOfflineTestBase {

   private static final Logger LOG = LoggerFactory.getLogger(DurableSubscriptionOffline2Test.class);

   @Parameterized.Parameters(name = "{0}")
   public static Collection<Boolean[]> getTestParameters() {
      Boolean[] f = {Boolean.FALSE};
      Boolean[] t = {Boolean.TRUE};
      List<Boolean[]> booleanChoices = new ArrayList<Boolean[]>();
      booleanChoices.add(f);
      booleanChoices.add(t);

      return booleanChoices;
   }

   public DurableSubscriptionOffline2Test(Boolean keepDurableSubsActive) {
      this.keepDurableSubsActive = keepDurableSubsActive.booleanValue();

      LOG.info(">>>> running {} with keepDurableSubsActive: {}", testName.getMethodName(), this.keepDurableSubsActive);
   }

   @Test(timeout = 60 * 1000)
   public void testJMXCountersWithOfflineSubs() throws Exception {
      // create durable subscription 1
      Connection con = createConnection("cliId1");
      Session session = con.createSession(false, Session.AUTO_ACKNOWLEDGE);
      session.createDurableSubscriber(topic, "SubsId", null, true);
      session.close();
      con.close();

      // restart broker
      broker.stop();
      createBroker(false /*deleteAllMessages*/);

      // send messages
      con = createConnection();
      session = con.createSession(false, Session.AUTO_ACKNOWLEDGE);
      MessageProducer producer = session.createProducer(null);

      int sent = 0;
      for (int i = 0; i < 10; i++) {
         sent++;
         Message message = session.createMessage();
         producer.send(topic, message);
      }
      session.close();
      con.close();

      // consume some messages
      con = createConnection("cliId1");
      session = con.createSession(false, Session.AUTO_ACKNOWLEDGE);
      MessageConsumer consumer = session.createDurableSubscriber(topic, "SubsId", null, true);

      for (int i = 0; i < sent / 2; i++) {
         Message m = consumer.receive(4000);
         assertNotNull("got message: " + i, m);
         LOG.info("Got :" + i + ", " + m);
      }

      // check some counters while active
      ObjectName activeDurableSubName = broker.getAdminView().getDurableTopicSubscribers()[0];
      LOG.info("active durable sub name: " + activeDurableSubName);
      final DurableSubscriptionViewMBean durableSubscriptionView = (DurableSubscriptionViewMBean) broker.getManagementContext().newProxyInstance(activeDurableSubName, DurableSubscriptionViewMBean.class, true);

      assertTrue("is active", durableSubscriptionView.isActive());
      assertEquals("all enqueued", keepDurableSubsActive ? 10 : 0, durableSubscriptionView.getEnqueueCounter());
      assertTrue("correct waiting acks", Wait.waitFor(new Wait.Condition() {
         @Override
         public boolean isSatisified() throws Exception {
            return 5 == durableSubscriptionView.getMessageCountAwaitingAcknowledge();
         }
      }));
      assertEquals("correct dequeue", 5, durableSubscriptionView.getDequeueCounter());

      ObjectName destinationName = broker.getAdminView().getTopics()[0];
      TopicViewMBean topicView = (TopicViewMBean) broker.getManagementContext().newProxyInstance(destinationName, TopicViewMBean.class, true);
      assertEquals("correct enqueue", 10, topicView.getEnqueueCount());
      assertEquals("still zero dequeue, we don't decrement on each sub ack to stop exceeding the enqueue count with multiple subs", 0, topicView.getDequeueCount());
      assertEquals("inflight", 5, topicView.getInFlightCount());

      session.close();
      con.close();

      // check some counters when inactive
      ObjectName inActiveDurableSubName = broker.getAdminView().getInactiveDurableTopicSubscribers()[0];
      LOG.info("inactive durable sub name: " + inActiveDurableSubName);
      DurableSubscriptionViewMBean durableSubscriptionView1 = (DurableSubscriptionViewMBean) broker.getManagementContext().newProxyInstance(inActiveDurableSubName, DurableSubscriptionViewMBean.class, true);

      assertTrue("is not active", !durableSubscriptionView1.isActive());
      assertEquals("all enqueued", keepDurableSubsActive ? 10 : 0, durableSubscriptionView1.getEnqueueCounter());
      assertEquals("correct awaiting ack", 0, durableSubscriptionView1.getMessageCountAwaitingAcknowledge());
      assertEquals("correct dequeue", keepDurableSubsActive ? 5 : 0, durableSubscriptionView1.getDequeueCounter());

      // destination view
      assertEquals("correct enqueue", 10, topicView.getEnqueueCount());
      assertEquals("still zero dequeue, we don't decrement on each sub ack to stop exceeding the enqueue count with multiple subs", 0, topicView.getDequeueCount());
      assertEquals("inflight back to 0 after deactivate", 0, topicView.getInFlightCount());

      // consume the rest
      con = createConnection("cliId1");
      session = con.createSession(false, Session.AUTO_ACKNOWLEDGE);
      consumer = session.createDurableSubscriber(topic, "SubsId", null, true);

      for (int i = 0; i < sent / 2; i++) {
         Message m = consumer.receive(30000);
         assertNotNull("got message: " + i, m);
         LOG.info("Got :" + i + ", " + m);
      }

      activeDurableSubName = broker.getAdminView().getDurableTopicSubscribers()[0];
      LOG.info("durable sub name: " + activeDurableSubName);
      final DurableSubscriptionViewMBean durableSubscriptionView2 = (DurableSubscriptionViewMBean) broker.getManagementContext().newProxyInstance(activeDurableSubName, DurableSubscriptionViewMBean.class, true);

      assertTrue("is active", durableSubscriptionView2.isActive());
      assertEquals("all enqueued", keepDurableSubsActive ? 10 : 0, durableSubscriptionView2.getEnqueueCounter());
      assertTrue("correct dequeue", Wait.waitFor(new Wait.Condition() {
         @Override
         public boolean isSatisified() throws Exception {
            long val = durableSubscriptionView2.getDequeueCounter();
            LOG.info("dequeue count:" + val);
            return 10 == val;
         }
      }));
   }
}
