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.asterix.cloud;
  
  import java.io.FilenameFilter;
  import java.io.IOException;
  import java.nio.ByteBuffer;
  import java.util.Collections;
  
  import org.apache.asterix.cloud.clients.ICloudClient;
  import org.apache.asterix.cloud.clients.ICloudWriter;
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
  import org.junit.FixMethodOrder;
  import org.junit.Test;
  import org.junit.runners.MethodSorters;
  
  @FixMethodOrder(MethodSorters.NAME_ASCENDING)
  public abstract class AbstractLSMTest {
      public static final Logger LOGGER = LogManager.getLogger();
  
      public static final String BTREE_SUFFIX = "b";
      public static final String PLAYGROUND_CONTAINER = "playground";
      private final static String BUCKET_STORAGE_ROOT = "storage";
      private static final int BUFFER_SIZE = 136 * 1024 + 5;
  
      public static ICloudClient CLOUD_CLIENT;
  
      @Test
      public void a4deleteTest() {
          try {
              CLOUD_CLIENT.deleteObjects(PLAYGROUND_CONTAINER, Collections.singleton(BUCKET_STORAGE_ROOT));
          } catch (Exception ex) {
              ex.printStackTrace();
          }
      }
  
      @Test
      public void a1writeToS3Test() throws IOException {
          IWriteBufferProvider bufferProvider = new WriterSingleBufferProvider(CLOUD_CLIENT.getWriteBufferSize());
          ICloudWriter cloudWriter =
                  CLOUD_CLIENT.createWriter(PLAYGROUND_CONTAINER, BUCKET_STORAGE_ROOT + "/0_b", bufferProvider);
  
          try {
              ByteBuffer content = createContent(BUFFER_SIZE);
              int size = 0;
              for (int i = 0; i < 10; i++) {
                  content.clear();
                  size += cloudWriter.write(content);
              }
              cloudWriter.finish();
              System.err.println(size);
          } catch (Exception e) {
              e.printStackTrace();
              if (cloudWriter != null) {
                  cloudWriter.abort();
              }
          }
      }
  
      @Test
      public void a3readFromS3Test() {
          try {
              ByteBuffer buffer = ByteBuffer.allocate(BUFFER_SIZE);
              buffer.clear();
  
              long offset = BUFFER_SIZE * 4;
              int read = CLOUD_CLIENT.read(PLAYGROUND_CONTAINER, BUCKET_STORAGE_ROOT + "/0_b", offset, buffer);
              buffer.clear();
  
              for (int i = 0; i < read; i++) {
                  assert i % 127 == buffer.get();
              }
          } catch (Exception ex) {
              ex.printStackTrace();
          }
      }
  
      @Test
      public void a2listTest() {
          try {
              FilenameFilter btreeFilter = (dir, name) -> !name.startsWith(".") && name.endsWith(BTREE_SUFFIX);
              System.err.println((CLOUD_CLIENT.listObjects(PLAYGROUND_CONTAINER, BUCKET_STORAGE_ROOT, btreeFilter)));
          } catch (Exception ex) {
              ex.printStackTrace();
          }
      }
  
      private ByteBuffer createContent(int size) {
          byte[] contentArray = new byte[size];
          for (int i = 0; i < size; i++) {
              contentArray[i] = (byte) (i % 127);
          }
          return ByteBuffer.wrap(contentArray);
      }
  
  }
  