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   * 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,
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   * See the License for the specific language governing permissions and
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  package org.apache.activemq.artemis.tests.integration.cluster.distribution;
  
  import java.lang.reflect.Field;
  import java.util.Map;
  import java.util.Random;
  
  import org.apache.activemq.artemis.api.core.JsonUtil;
  import org.apache.activemq.artemis.core.client.impl.ServerLocatorInternal;
  import org.apache.activemq.artemis.core.config.ClusterConnectionConfiguration;
  import org.apache.activemq.artemis.core.management.impl.view.ConnectionField;
  import org.apache.activemq.artemis.core.management.impl.view.predicate.ActiveMQFilterPredicate;
  import org.apache.activemq.artemis.core.server.cluster.MessageFlowRecord;
  import org.apache.activemq.artemis.core.server.cluster.impl.ClusterConnectionImpl;
  import org.apache.activemq.artemis.core.server.cluster.impl.MessageLoadBalancingType;
  import org.apache.activemq.artemis.json.JsonArray;
  import org.apache.activemq.artemis.json.JsonObject;
  import org.apache.activemq.artemis.utils.RandomUtil;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  public class ClusterConnectionConfigTest extends ClusterTestBase {
  
     @Override
     @BeforeEach
     public void setUp() throws Exception {
        super.setUp();
        start();
     }
  
     private void start() throws Exception {
        setupServers();
     }
  
     protected boolean isNetty() {
        return true;
     }
  
     protected void setupServers() throws Exception {
        setupServer(0, isFileStorage(), isNetty());
        setupServer(1, isFileStorage(), isNetty());
     }
  
     protected void setupCluster(final MessageLoadBalancingType messageLoadBalancingType, final ClusterConfigCallback cb) throws Exception {
        setupClusterConnection("cluster0", "queues", messageLoadBalancingType, 1, isNetty(), cb, 0, 1, 2);
        setupClusterConnection("cluster1", "queues", messageLoadBalancingType, 1, isNetty(), cb, 1, 0, 2);
     }
  
     @Test
     public void testRedistributionFlowControl() throws Exception {
        final int producerWindow = new Random().nextInt(Integer.MAX_VALUE);
        setupCluster(MessageLoadBalancingType.ON_DEMAND, (ClusterConnectionConfiguration cfg) -> {
           cfg.setProducerWindowSize(producerWindow);
        });
        startServers(0, 1);
  
        setupSessionFactory(0, isNetty());
        setupSessionFactory(1, isNetty());
  
        createQueue(0, "queues.testaddress", "queue0", null, false);
        createQueue(1, "queues.testaddress", "queue0", null, false);
  
        addConsumer(1, 1, "queue0", null);
  
        waitForBindings(0, "queues.testaddress", 1, 0, true);
        waitForBindings(1, "queues.testaddress", 1, 1, true);
  
        waitForBindings(0, "queues.testaddress", 1, 1, false);
        waitForBindings(1, "queues.testaddress", 1, 0, false);
  
        send(0, "queues.testaddress", 1, false, null);
  
        //receiveMessages(consumers[1].consumer, 0, 1, true);
        Thread.sleep(5000);
        makeSureForwardingFlowControl(producerWindow, 0, 1);
  
  
        removeConsumer(1);
     }
  
     private void makeSureForwardingFlowControl(int producerWindow, int... indices) throws NoSuchFieldException, IllegalAccessException {
        for (int i : indices) {
           ClusterConnectionImpl cc = (ClusterConnectionImpl) servers[i].getClusterManager().getClusterConnection("cluster" + i);
           Map<String, MessageFlowRecord> map = cc.getRecords();
           assertEquals(1, map.size());
           MessageFlowRecord record = map.entrySet().iterator().next().getValue();
  
           Field f = record.getClass().getDeclaredField("targetLocator"); //NoSuchFieldException
           f.setAccessible(true);
           ServerLocatorInternal targetLocator = (ServerLocatorInternal) f.get(record);
           assertEquals(producerWindow, targetLocator.getProducerWindowSize());
        }
     }
  
     @Test
     public void testClusterConnectionClientId() throws Exception {
        final String clientId = RandomUtil.randomUUIDString();
        setupCluster(MessageLoadBalancingType.ON_DEMAND, (ClusterConnectionConfiguration cfg) -> {
           cfg.setClientId(clientId);
        });
        startServers(0, 1);
  
        setupSessionFactory(0, isNetty());
        setupSessionFactory(1, isNetty());
  
        createQueue(0, "queues.testaddress", "queue0", null, false);
        createQueue(1, "queues.testaddress", "queue0", null, false);
  
        waitForBindings(0, "queues.testaddress", 1, 0, true);
        waitForBindings(1, "queues.testaddress", 1, 0, true);
  
        waitForBindings(0, "queues.testaddress", 1, 0, false);
        waitForBindings(1, "queues.testaddress", 1, 0, false);
  
        String connectionsAsJsonString = servers[1].getActiveMQServerControl().listConnections(createJsonFilter(ConnectionField.CLIENT_ID.getName(), ActiveMQFilterPredicate.Operation.EQUALS.toString(), clientId), 1, 1);
        JsonObject connectionsAsJsonObject = JsonUtil.readJsonObject(connectionsAsJsonString);
        JsonArray array = (JsonArray) connectionsAsJsonObject.get("data");
        assertEquals(1, array.size(), "number of connections returned from query");
     }
  
  }
  