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   * 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.
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  package org.apache.cassandra.cql3.validation.operations;
  
  import java.util.List;
  
  import org.apache.cassandra.io.util.File;
  import org.junit.Test;
  
  import org.apache.cassandra.config.DatabaseDescriptor;
  import org.apache.cassandra.cql3.CQLTester;
  import org.apache.cassandra.db.commitlog.CommitLog;
  import org.apache.cassandra.exceptions.AlreadyExistsException;
  import org.apache.cassandra.exceptions.ConfigurationException;
  import org.apache.cassandra.exceptions.InvalidRequestException;
  import org.apache.cassandra.io.util.FileUtils;
  
  public class DropRecreateAndRestoreTest extends CQLTester
  {
      // don't run CQLTester after test, commitlog is messed up by testCreateWithIdRestore and we now need to commit a ForceSnapshot when resetting the CMS
      public void afterTest() {}
  
      @Test
      public void testCreateWithIdRestore() throws Throwable
      {
          createTable("CREATE TABLE %s (a int, b int, c int, PRIMARY KEY(a, b))");
  
          long timeInMicroSecond1 = System.currentTimeMillis() * 1000;
          execute("INSERT INTO %s (a, b, c) VALUES (?, ?, ?) USING TIMESTAMP ? ", 0, 0, 0, timeInMicroSecond1);
          execute("INSERT INTO %s (a, b, c) VALUES (?, ?, ?) USING TIMESTAMP ?", 0, 1, 1, timeInMicroSecond1);
  
          String id = currentTableMetadata().id.toLongString();
          assertRows(execute("SELECT * FROM %s"), row(0, 0, 0), row(0, 1, 1));
          Thread.sleep(5);
  
          long timeInMicroSecond2 = System.currentTimeMillis() * 1000;
          execute("INSERT INTO %s (a, b, c) VALUES (?, ?, ?) USING TIMESTAMP ? ", 1, 0, 2, timeInMicroSecond2);
          execute("INSERT INTO %s (a, b, c) VALUES (?, ?, ?) USING TIMESTAMP ? ", 1, 1, 3, timeInMicroSecond2);
          assertRows(execute("SELECT * FROM %s"), row(1, 0, 2), row(1, 1, 3), row(0, 0, 0), row(0, 1, 1));
  
          // Drop will flush and clean segments. Hard-link them so that they can be restored later.
          List<String> segments = CommitLog.instance.getActiveSegmentNames();
          File logPath = new File(DatabaseDescriptor.getCommitLogLocation());
          for (String segment: segments)
              FileUtils.createHardLink(new File(logPath, segment), new File(logPath, segment + ".save"));
  
          execute("DROP TABLE %s");
  
          assertInvalidThrow(InvalidRequestException.class, "SELECT * FROM %s");
  
          execute(String.format("CREATE TABLE %%s (a int, b int, c int, PRIMARY KEY(a, b)) WITH ID = %s", id));
  
          // Restore saved segments
          for (String segment: segments)
              FileUtils.renameWithConfirm(new File(logPath, segment + ".save"), new File(logPath, segment));
          try
          {
              // Restore to point in time (microseconds granularity)
              CommitLog.instance.archiver.setRestorePointInTimeInMicroseconds(timeInMicroSecond1);
              CommitLog.instance.resetUnsafe(false);
          }
          finally
          {
              CommitLog.instance.archiver.setRestorePointInTimeInMicroseconds(Long.MAX_VALUE);
          }
  
          assertRows(execute("SELECT * FROM %s"), row(0, 0, 0), row(0, 1, 1));
      }
  
      @Test(expected = AlreadyExistsException.class)
      public void testCreateWithIdDuplicate() throws Throwable
      {
          createTable("CREATE TABLE %s (a int, b int, c int, PRIMARY KEY(a, b))");
          String id = currentTableMetadata().id.toLongString();
          execute(String.format("CREATE TABLE %%s (a int, b int, c int, PRIMARY KEY(a, b)) WITH ID = %s", id));
      }
  
      @Test(expected = ConfigurationException.class)
      public void testCreateWithIdInvalid() throws Throwable
      {
          createTableMayThrow(String.format("CREATE TABLE %%s (a int, b int, c int, PRIMARY KEY(a, b)) WITH ID = %s", 55));
      }
  
      @Test(expected = ConfigurationException.class)
      public void testAlterWithId() throws Throwable
      {
          createTable("CREATE TABLE %s (a int, b int, c int, PRIMARY KEY(a, b))");
          String id = currentTableMetadata().id.toLongString();
          execute(String.format("ALTER TABLE %%s WITH ID = %s", id));
      }
  }
  