package org.infinispan.statetransfer;

import static org.testng.AssertJUnit.assertEquals;

import java.util.HashSet;
import java.util.Set;

import org.infinispan.configuration.cache.CacheMode;
import org.infinispan.configuration.cache.ConfigurationBuilder;
import org.infinispan.container.entries.InternalCacheEntry;
import org.infinispan.test.MultipleCacheManagersTest;
import org.infinispan.test.TestingUtil;
import org.infinispan.test.fwk.CleanupAfterMethod;
import org.infinispan.transaction.LockingMode;
import org.infinispan.transaction.TransactionMode;
import org.infinispan.transaction.lookup.EmbeddedTransactionManagerLookup;
import org.testng.annotations.Test;

/**
 * Test if state transfer happens properly on a cache with pessimistic transactions.
 * See https://issues.jboss.org/browse/ISPN-2408.
 *
 * @since 5.2
 */
@Test(groups = "functional", testName = "statetransfer.StateTransferPessimisticTest")
@CleanupAfterMethod
public class StateTransferPessimisticTest extends MultipleCacheManagersTest {

   public static final int NUM_KEYS = 100;
   private ConfigurationBuilder dccc;

   @Override
   protected void createCacheManagers() throws Throwable {
      dccc = getDefaultClusteredCacheConfig(CacheMode.DIST_SYNC, true, true);
      dccc.transaction()
            .transactionMode(TransactionMode.TRANSACTIONAL)
            .transactionManagerLookup(new EmbeddedTransactionManagerLookup())
            .lockingMode(LockingMode.PESSIMISTIC);
      dccc.clustering().hash().numOwners(1).l1().disable();
      dccc.locking().lockAcquisitionTimeout(TestingUtil.shortTimeoutMillis());
      createCluster(dccc, 2);
      waitForClusterToForm();
   }

   public void testStateTransfer() throws Exception {
      Set<Object> keys = new HashSet<>();
      for (int i = 0; i < NUM_KEYS; i++) {
         Object key = getKeyForCache(0);
         if (!keys.add(key)) continue;

         // put a key to have some data in cache
         cache(0).put(key, key);
      }

      log.trace("State transfer happens here");
      // add a third node
      addClusterEnabledCacheManager(dccc);
      waitForClusterToForm();

      log.trace("Checking the values from caches...");
      for (Object key : keys) {
         log.tracef("Checking key: %s", key);
         // check them directly in data container
         InternalCacheEntry d0 = advancedCache(0).getDataContainer().get(key);
         InternalCacheEntry d1 = advancedCache(1).getDataContainer().get(key);
         InternalCacheEntry d2 = advancedCache(2).getDataContainer().get(key);
         int c = 0;
         if (d0 != null && !d0.isExpired(TIME_SERVICE.wallClockTime())) {
            assertEquals(key, d0.getValue());
            c++;
         }
         if (d1 != null && !d1.isExpired(TIME_SERVICE.wallClockTime())) {
            assertEquals(key, d1.getValue());
            c++;
         }
         if (d2 != null && !d2.isExpired(TIME_SERVICE.wallClockTime())) {
            assertEquals(key, d2.getValue());
            c++;
         }
         assertEquals(1, c);

         // look at them also via cache API
         assertEquals(key, cache(0).get(key));
         assertEquals(key, cache(1).get(key));
         assertEquals(key, cache(2).get(key));
      }
   }
}