/*
 * 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.geode.internal.cache.tier.sockets;

import static org.apache.geode.cache.Region.SEPARATOR;
import static org.apache.geode.distributed.ConfigurationProperties.LOCATORS;
import static org.apache.geode.distributed.ConfigurationProperties.MCAST_PORT;
import static org.apache.geode.internal.AvailablePortHelper.getRandomAvailableTCPPort;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.fail;

import java.util.Properties;

import org.junit.Test;
import org.junit.experimental.categories.Category;

import org.apache.geode.cache.AttributesFactory;
import org.apache.geode.cache.Cache;
import org.apache.geode.cache.CacheFactory;
import org.apache.geode.cache.DataPolicy;
import org.apache.geode.cache.Region;
import org.apache.geode.cache.RegionAttributes;
import org.apache.geode.cache.Scope;
import org.apache.geode.cache.client.Pool;
import org.apache.geode.cache.client.PoolManager;
import org.apache.geode.cache.client.internal.Connection;
import org.apache.geode.cache.client.internal.PoolImpl;
import org.apache.geode.cache.client.internal.ServerRegionProxy;
import org.apache.geode.cache.server.CacheServer;
import org.apache.geode.distributed.DistributedSystem;
import org.apache.geode.internal.cache.EventID;
import org.apache.geode.internal.cache.LocalRegion;
import org.apache.geode.test.dunit.Assert;
import org.apache.geode.test.dunit.Host;
import org.apache.geode.test.dunit.NetworkUtils;
import org.apache.geode.test.dunit.VM;
import org.apache.geode.test.dunit.Wait;
import org.apache.geode.test.dunit.internal.JUnit4DistributedTestCase;
import org.apache.geode.test.junit.categories.ClientSubscriptionTest;

/**
 * One Client, two servers. Ensure that client 1 has registered interest list on server 2. Now
 * Client does a put on server1. The Client should not receive callback of its own put.
 */
@Category({ClientSubscriptionTest.class})
public class VerifyUpdatesFromNonInterestEndPointDUnitTest extends JUnit4DistributedTestCase {

  private VM vm0 = null;
  private VM vm1 = null;
  private VM vm2 = null;

  private int PORT1;
  private int PORT2;
  private static final String REGION_NAME =
      VerifyUpdatesFromNonInterestEndPointDUnitTest.class.getSimpleName() + "_region";

  private static Cache cache = null;

  /** constructor */
  public VerifyUpdatesFromNonInterestEndPointDUnitTest() {
    super();
  }

  @Override
  public final void postSetUp() throws Exception {
    disconnectAllFromDS();
    Wait.pause(5000);
    final Host host = Host.getHost(0);
    vm0 = host.getVM(0);
    vm1 = host.getVM(1);
    vm2 = host.getVM(2);

    PORT1 = vm0
        .invoke(VerifyUpdatesFromNonInterestEndPointDUnitTest::createServerCache);
    PORT2 = vm1
        .invoke(VerifyUpdatesFromNonInterestEndPointDUnitTest::createServerCache);

    vm2.invoke(() -> VerifyUpdatesFromNonInterestEndPointDUnitTest.createClientCache(
        NetworkUtils.getServerHostName(vm0.getHost()), PORT1, PORT2));
  }

  private Cache createCache(Properties props) throws Exception {
    DistributedSystem ds = getSystem(props);
    Cache cache = null;
    cache = CacheFactory.create(ds);
    if (cache == null) {
      throw new Exception("CacheFactory.create() returned null ");
    }
    return cache;
  }

  @Test
  public void testVerifyUpdatesFromNonInterestEndPoint() {
    vm2.invoke(VerifyUpdatesFromNonInterestEndPointDUnitTest::createEntries);
    vm1.invoke(VerifyUpdatesFromNonInterestEndPointDUnitTest::createEntries);
    vm0.invoke(VerifyUpdatesFromNonInterestEndPointDUnitTest::createEntries);

    vm2.invoke(VerifyUpdatesFromNonInterestEndPointDUnitTest::registerKey);

    vm2.invoke(() -> VerifyUpdatesFromNonInterestEndPointDUnitTest
        .acquireConnectionsAndPut(PORT2));
    Wait.pause(30000);
    vm2.invoke(VerifyUpdatesFromNonInterestEndPointDUnitTest::verifyPut);
  }

  public static void acquireConnectionsAndPut(Integer port) {
    try {
      Region r1 = cache.getRegion(SEPARATOR + REGION_NAME);
      String poolName = r1.getAttributes().getPoolName();
      assertNotNull(poolName);
      PoolImpl pool = (PoolImpl) PoolManager.find(poolName);
      assertNotNull(pool);
      Connection conn1 = pool.acquireConnection();
      Connection conn2 = pool.acquireConnection();
      ServerRegionProxy srp = new ServerRegionProxy(SEPARATOR + REGION_NAME, pool);
      // put on a connection which is is not interest list ep
      if (conn1.getServer().getPort() == port) {
        srp.putOnForTestsOnly(conn1, "key-1", "server-value1", new EventID(new byte[] {1}, 1, 1),
            null);
        srp.putOnForTestsOnly(conn1, "key-2", "server-value2", new EventID(new byte[] {1}, 1, 2),
            null);
      } else if (conn2.getServer().getPort() == port) {
        srp.putOnForTestsOnly(conn2, "key-1", "server-value1", new EventID(new byte[] {1}, 1, 1),
            null);
        srp.putOnForTestsOnly(conn2, "key-2", "server-value2", new EventID(new byte[] {1}, 1, 2),
            null);
      }
    } catch (Exception ex) {
      fail("while setting acquireConnections  " + ex);
    }
  }

  public static void createEntries() {
    try {
      LocalRegion r1 = (LocalRegion) cache.getRegion(SEPARATOR + REGION_NAME);
      if (!r1.containsKey("key-1")) {
        r1.create("key-1", "key-1");
      }
      if (!r1.containsKey("key-2")) {
        r1.create("key-2", "key-2");
      }
      assertEquals(r1.getEntry("key-1").getValue(), "key-1");
      assertEquals(r1.getEntry("key-2").getValue(), "key-2");
    } catch (Exception ex) {
      Assert.fail("failed while createEntries()", ex);
    }
  }

  public static void createClientCache(String host, Integer port1, Integer port2) throws Exception {
    VerifyUpdatesFromNonInterestEndPointDUnitTest test =
        new VerifyUpdatesFromNonInterestEndPointDUnitTest();
    Properties props = new Properties();
    props.setProperty(MCAST_PORT, "0");
    props.setProperty(LOCATORS, "");
    cache = test.createCache(props);
    Pool p;
    try {
      p = PoolManager.createFactory().addServer(host, port1)
          .addServer(host, port2).setSubscriptionEnabled(true)
          .setSubscriptionRedundancy(-1).setMinConnections(6).setSocketBufferSize(32768)
          .setReadTimeout(2000)
          // .setRetryInterval(250)
          // .setRetryAttempts(5)
          .create("UpdatePropagationDUnitTestPool");
    } finally {
      CacheServerTestUtil.enableShufflingOfEndpoints();
    }

    AttributesFactory factory = new AttributesFactory();
    factory.setScope(Scope.DISTRIBUTED_ACK);
    factory.setPoolName(p.getName());
    RegionAttributes attrs = factory.create();
    cache.createRegion(REGION_NAME, attrs);

  }

  public static Integer createServerCache() throws Exception {
    cache = new VerifyUpdatesFromNonInterestEndPointDUnitTest().createCache(new Properties());
    AttributesFactory factory = new AttributesFactory();
    factory.setScope(Scope.DISTRIBUTED_ACK);
    factory.setDataPolicy(DataPolicy.REPLICATE);
    RegionAttributes attrs = factory.create();
    cache.createRegion(REGION_NAME, attrs);
    CacheServer server1 = cache.addCacheServer();
    int port = getRandomAvailableTCPPort();
    server1.setPort(port);
    server1.setNotifyBySubscription(true);
    server1.start();
    return server1.getPort();
  }

  public static void registerKey() {
    try {
      Region r = cache.getRegion(SEPARATOR + REGION_NAME);
      assertNotNull(r);
      r.registerInterest("key-1");

    } catch (Exception ex) {
      Assert.fail("failed while registerKey()", ex);
    }
  }

  public static void verifyPut() {
    try {
      Region r = cache.getRegion(SEPARATOR + REGION_NAME);
      assertNotNull(r);
      // verify no update
      assertEquals("key-1", r.getEntry("key-1").getValue());
      assertEquals("key-2", r.getEntry("key-2").getValue());
    } catch (Exception ex) {
      Assert.fail("failed while verifyPut()", ex);
    }
  }

  public static void closeCache() {
    if (cache != null && !cache.isClosed()) {
      cache.close();
      cache.getDistributedSystem().disconnect();
    }
  }

  @Override
  public final void preTearDown() throws Exception {
    // close client
    vm2.invoke(VerifyUpdatesFromNonInterestEndPointDUnitTest::closeCache);
    // close server
    vm0.invoke(VerifyUpdatesFromNonInterestEndPointDUnitTest::closeCache);
    vm1.invoke(VerifyUpdatesFromNonInterestEndPointDUnitTest::closeCache);
  }
}
