/*
 * Copyright Terracotta, Inc.
 *
 * Licensed 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.ehcache.clustered.replication;

import org.ehcache.PersistentCacheManager;
import org.ehcache.clustered.client.internal.lock.VoltronReadWriteLock;
import org.ehcache.config.builders.CacheManagerBuilder;
import org.junit.After;
import org.junit.Before;
import org.junit.ClassRule;
import org.junit.Test;
import org.terracotta.testing.rules.BasicExternalCluster;
import org.terracotta.testing.rules.Cluster;

import java.io.File;
import java.util.Collections;

import static org.ehcache.clustered.client.config.builders.ClusteredResourcePoolBuilder.clusteredDedicated;
import static org.ehcache.clustered.client.config.builders.ClusteringServiceConfigurationBuilder.cluster;
import static org.ehcache.config.builders.CacheConfigurationBuilder.newCacheConfigurationBuilder;
import static org.ehcache.config.builders.CacheManagerBuilder.newCacheManagerBuilder;
import static org.ehcache.config.builders.ResourcePoolsBuilder.heap;
import static org.ehcache.config.units.MemoryUnit.MB;
import static org.hamcrest.Matchers.nullValue;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.fail;

public class BasicLifeCyclePassiveReplicationTest {

  private static final String RESOURCE_CONFIG =
      "<config xmlns:ohr='http://www.terracotta.org/config/offheap-resource'>"
      + "<ohr:offheap-resources>"
      + "<ohr:resource name=\"primary-server-resource\" unit=\"MB\">16</ohr:resource>"
      + "</ohr:offheap-resources>" +
      "</config>\n";

  @ClassRule
  public static Cluster CLUSTER =
      new BasicExternalCluster(new File("build/cluster"), 2, Collections.<File>emptyList(), "", RESOURCE_CONFIG, "");

  @Before
  public void startServers() throws Exception {
    CLUSTER.getClusterControl().startAllServers();
    CLUSTER.getClusterControl().waitForActive();
    CLUSTER.getClusterControl().waitForRunningPassivesInStandby();
  }

  @After
  public void tearDown() throws Exception {
    CLUSTER.getClusterControl().terminateActive();
  }

  @Test
  public void testDestroyCacheManager() throws Exception {
    CacheManagerBuilder<PersistentCacheManager> configBuilder = newCacheManagerBuilder().with(cluster(CLUSTER.getConnectionURI().resolve("/destroy-CM"))
      .autoCreate().defaultServerResource("primary-server-resource"));
    PersistentCacheManager cacheManager1 = configBuilder.build(true);
    PersistentCacheManager cacheManager2 = configBuilder.build(true);

    cacheManager2.close();

    try {
      cacheManager2.destroy();
      fail("Exception expected");
    } catch (Exception e) {
      e.printStackTrace();
    }

    CLUSTER.getClusterControl().terminateActive();
    CLUSTER.getClusterControl().waitForActive();

    cacheManager1.createCache("test", newCacheConfigurationBuilder(Long.class, String.class, heap(10).with(clusteredDedicated(10, MB))));
  }

  @Test
  public void testDestroyLockEntity() throws Exception {
    VoltronReadWriteLock lock1 = new VoltronReadWriteLock(CLUSTER.newConnection(), "my-lock");
    VoltronReadWriteLock.Hold hold1 = lock1.tryReadLock();

    VoltronReadWriteLock lock2 = new VoltronReadWriteLock(CLUSTER.newConnection(), "my-lock");
    assertThat(lock2.tryWriteLock(), nullValue());

    CLUSTER.getClusterControl().terminateActive();
    CLUSTER.getClusterControl().waitForActive();

    hold1.unlock();
  }

}