content: /*
   * Copyright 2014-2025 Real Logic Limited.
   *
   * Licensed 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
   *
   * https://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 io.aeron.samples.archive;
  
  import io.aeron.logbuffer.FragmentHandler;
  
  import java.io.File;
  import java.io.IOException;
  import java.nio.file.Files;
  
  /**
   * Common constants and functions used in the Archive samples.
   */
  class Samples
  {
      /**
       * One MB constant for using in calculations.
       */
      public static final double MEGABYTE = 1024.0d * 1024.0d;
  
      /**
       * A {@link FragmentHandler} that consumes fragments with no side effects.
       */
      public static final FragmentHandler NOOP_FRAGMENT_HANDLER = (buffer, offset, length, header) -> {};
  
      /**
       * Create a temporary directory for storing a sample archive.
       *
       * @return a temporary directory for storing a sample archive.
       */
      public static File createTempDir()
      {
          final File tempDirForTest;
          try
          {
              tempDirForTest = Files.createTempFile("archive", "tmp").toFile();
          }
          catch (final IOException ex)
          {
              throw new RuntimeException(ex);
          }
  
          if (!tempDirForTest.delete())
          {
              throw new IllegalStateException("failed to delete: " + tempDirForTest);
          }
  
          if (!tempDirForTest.mkdir())
          {
              throw new IllegalStateException("failed to create: " + tempDirForTest);
          }
  
          return tempDirForTest;
      }
  }
  