content: /*
   * 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.cassandra.db.commitlog;
  
  import java.nio.ByteBuffer;
  import java.util.concurrent.TimeUnit;
  
  import org.junit.Assert;
  import org.junit.BeforeClass;
  import org.junit.Test;
  
  import org.apache.cassandra.config.Config;
  import org.apache.cassandra.config.DatabaseDescriptor;
  import org.apache.cassandra.config.ParameterizedClass;
  import org.apache.cassandra.db.ColumnFamilyStore;
  import org.apache.cassandra.db.Keyspace;
  import org.apache.cassandra.db.Mutation;
  import org.apache.cassandra.db.RowUpdateBuilder;
  import org.apache.cassandra.security.EncryptionContext;
  
  import static org.junit.Assert.assertEquals;
  import static org.apache.cassandra.utils.Clock.Global.nanoTime;
  
  public class BatchCommitLogTest extends CommitLogTest
  {
      private static final long CL_BATCH_SYNC_WINDOW = 1000; // 1 second
      
      public BatchCommitLogTest(ParameterizedClass commitLogCompression, EncryptionContext encryptionContext)
      {
          super(commitLogCompression, encryptionContext);
      }
  
      @BeforeClass
      public static void setCommitLogModeDetails()
      {
          DatabaseDescriptor.daemonInitialization();
          DatabaseDescriptor.setCommitLogSync(Config.CommitLogSync.batch);
          beforeClass();
      }
  
      @Test
      public void testBatchCLSyncImmediately()
      {
          ColumnFamilyStore cfs1 = Keyspace.open(KEYSPACE1).getColumnFamilyStore(STANDARD1);
          Mutation m = new RowUpdateBuilder(cfs1.metadata.get(), 0, "key")
                       .clustering("bytes")
                       .add("val", ByteBuffer.allocate(10 * 1024))
                       .build();
  
          long startNano = nanoTime();
          CommitLog.instance.add(m);
          long delta = TimeUnit.NANOSECONDS.toMillis(nanoTime() - startNano);
          Assert.assertTrue("Expect batch commitlog sync immediately, but took " + delta, delta < CL_BATCH_SYNC_WINDOW);
      }
  
      @Test
      public void testBatchCLShutDownImmediately() throws InterruptedException
      {
          long startNano = nanoTime();
          CommitLog.instance.shutdownBlocking();
          long delta = TimeUnit.NANOSECONDS.toMillis(nanoTime() - startNano);
          Assert.assertTrue("Expect batch commitlog shutdown immediately, but took " + delta, delta < CL_BATCH_SYNC_WINDOW);
          CommitLog.instance.start();
      }
  
      @Test
      public void testFlushAndWaitingMetrics()
      {
          ColumnFamilyStore cfs1 = Keyspace.open(KEYSPACE1).getColumnFamilyStore(STANDARD1);
          Mutation m = new RowUpdateBuilder(cfs1.metadata.get(), 0, "key").clustering("bytes")
                                                                          .add("val", ByteBuffer.allocate(10 * 1024))
                                                                          .build();
  
          long startingFlushCount = CommitLog.instance.metrics.waitingOnFlush.getCount();
          long startingWaitCount = CommitLog.instance.metrics.waitingOnCommit.getCount();
  
          CommitLog.instance.add(m);
  
          // We should register single new flush and waiting data points.
          assertEquals(startingFlushCount + 1, CommitLog.instance.metrics.waitingOnFlush.getCount());
          assertEquals(startingWaitCount + 1, CommitLog.instance.metrics.waitingOnCommit.getCount());
      }
  }
  