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.guardrails;
  
  import java.util.Arrays;
  
  import org.junit.Test;
  
  import org.apache.cassandra.config.DataStorageSpec;
  import org.apache.cassandra.db.marshal.Int32Type;
  
  import static java.nio.ByteBuffer.allocate;
  import static org.apache.cassandra.config.DataStorageSpec.DataStorageUnit.BYTES;
  
  /**
   * Tests the guardrail for the size of partitions, {@link Guardrails#partitionSize}.
   * <p>
   * The emission on unredacted log messages is tested in {@link org.apache.cassandra.distributed.test.guardrails.GuardrailPartitionSizeTest}.
   */
  public class GuardrailPartitionSizeTest extends ThresholdTester
  {
      private static final int WARN_THRESHOLD = 1024 * 1024; // bytes (1 MiB)
      private static final int FAIL_THRESHOLD = WARN_THRESHOLD * 2; // bytes (2 MiB)
      private static final int NUM_CLUSTERINGS = 10;
      private static final String REDACTED_MESSAGE = "Guardrail partition_size violated: Partition <redacted> has size";
  
      public GuardrailPartitionSizeTest()
      {
          super(WARN_THRESHOLD + "B",
                FAIL_THRESHOLD + "B",
                Guardrails.partitionSize,
                Guardrails::setPartitionSizeThreshold,
                Guardrails::getPartitionSizeWarnThreshold,
                Guardrails::getPartitionSizeFailThreshold,
                bytes -> new DataStorageSpec.LongBytesBound(bytes, BYTES).toString(),
                size -> new DataStorageSpec.LongBytesBound(size).toBytes());
      }
  
      @Test
      public void testPartitionSizeEnabled() throws Throwable
      {
          // Insert enough data to trigger the warning guardrail, but not the failure one.
          populateTable(WARN_THRESHOLD);
  
          flush();
          listener.assertWarned(REDACTED_MESSAGE);
          listener.clear();
  
          compact();
          listener.assertWarned(REDACTED_MESSAGE);
          listener.clear();
  
          // Insert enough data to trigger the failure guardrail.
          populateTable(FAIL_THRESHOLD);
  
          flush();
          listener.assertFailed(REDACTED_MESSAGE);
          listener.clear();
  
          compact();
          listener.assertFailed(REDACTED_MESSAGE);
          listener.clear();
  
          // remove most of the data to be under the threshold again
          assertValid("DELETE FROM %s WHERE k = 1 AND c > 0");
  
          flush();
          listener.assertNotWarned();
          listener.assertNotFailed();
  
          compact();
          listener.assertNotWarned();
          listener.assertNotFailed();
          listener.clear();
      }
  
      @Test
      public void testPartitionSizeDisabled() throws Throwable
      {
          guardrails().setPartitionSizeThreshold(null, null);
  
          populateTable(FAIL_THRESHOLD);
  
          flush();
          listener.assertNotWarned();
          listener.assertNotFailed();
  
          compact();
          listener.assertNotWarned();
          listener.assertNotFailed();
      }
  
      private void populateTable(int threshold) throws Throwable
      {
          createTable("CREATE TABLE IF NOT EXISTS %s (k int, c int, v blob, PRIMARY KEY(k, c))");
          disableCompaction();
  
          for (int i = 0; i < NUM_CLUSTERINGS; i++)
          {
              final int c = i;
              assertValid(() -> execute(userClientState,
                                        "INSERT INTO %s (k, c, v) VALUES (1, ?, ?)",
                                        Arrays.asList(Int32Type.instance.decompose(c),
                                                      allocate(threshold / NUM_CLUSTERINGS))));
          }
      }
  }
  