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;
  
  import java.io.IOException;
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.Collections;
  
  import org.apache.cassandra.SchemaLoader;
  import org.apache.cassandra.Util;
  import org.apache.cassandra.config.DatabaseDescriptor;
  import org.apache.cassandra.config.ParameterizedClass;
  import org.apache.cassandra.db.commitlog.CommitLog;
  import org.apache.cassandra.exceptions.ConfigurationException;
  import org.apache.cassandra.io.compress.DeflateCompressor;
  import org.apache.cassandra.io.compress.LZ4Compressor;
  import org.apache.cassandra.io.compress.SnappyCompressor;
  import org.apache.cassandra.io.compress.ZstdCompressor;
  import org.apache.cassandra.schema.KeyspaceParams;
  import org.apache.cassandra.security.EncryptionContext;
  import org.apache.cassandra.security.EncryptionContextGenerator;
  
  import org.junit.Before;
  import org.junit.BeforeClass;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.Parameterized;
  import org.junit.runners.Parameterized.Parameters;
  
  import static org.junit.Assert.*;
  
  /**
   * Test for the truncate operation.
   */
  @RunWith(Parameterized.class)
  public class RecoveryManagerTruncateTest
  {
      private static final String KEYSPACE1 = "RecoveryManagerTruncateTest";
      private static final String CF_STANDARD1 = "Standard1";
  
      public RecoveryManagerTruncateTest(ParameterizedClass commitLogCompression, EncryptionContext encryptionContext)
      {
          DatabaseDescriptor.setCommitLogCompression(commitLogCompression);
          DatabaseDescriptor.setEncryptionContext(encryptionContext);
          DatabaseDescriptor.initializeCommitLogDiskAccessMode();
      }
  
      @Parameters()
      public static Collection<Object[]> generateData()
      {
          return Arrays.asList(new Object[][]{
              {null, EncryptionContextGenerator.createDisabledContext()}, // No compression, no encryption
              {null, EncryptionContextGenerator.createContext(true)}, // Encryption
              {new ParameterizedClass(LZ4Compressor.class.getName(), Collections.emptyMap()), EncryptionContextGenerator.createDisabledContext()},
              {new ParameterizedClass(SnappyCompressor.class.getName(), Collections.emptyMap()), EncryptionContextGenerator.createDisabledContext()},
              {new ParameterizedClass(DeflateCompressor.class.getName(), Collections.emptyMap()), EncryptionContextGenerator.createDisabledContext()},
              {new ParameterizedClass(ZstdCompressor.class.getName(), Collections.emptyMap()), EncryptionContextGenerator.createDisabledContext()}});
      }
  
      @Before
      public void setUp() throws IOException
      {
          CommitLog.instance.resetUnsafe(true);
      }
  
      @BeforeClass
      public static void defineSchema() throws ConfigurationException
      {
          SchemaLoader.prepareServer();
          SchemaLoader.createKeyspace(KEYSPACE1,
                                      KeyspaceParams.simple(1),
                                      SchemaLoader.standardCFMD(KEYSPACE1, CF_STANDARD1));
      }
  
      @Test
      public void testTruncate() throws IOException
      {
          Keyspace keyspace = Keyspace.open(KEYSPACE1);
          ColumnFamilyStore cfs = keyspace.getColumnFamilyStore("Standard1");
  
          // add a single cell
          new RowUpdateBuilder(cfs.metadata(), 0, "key1")
              .clustering("cc")
              .add("val", "val1")
              .build()
              .applyUnsafe();
  
          // Make sure data was written
          assertTrue(Util.getAll(Util.cmd(cfs).build()).size() > 0);
  
          // and now truncate it
          cfs.truncateBlocking();
          assert 0 != CommitLog.instance.resetUnsafe(false);
  
          // and validate truncation.
          Util.assertEmptyUnfiltered(Util.cmd(cfs).build());
      }
  }
  