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.lazy.accessor;
  
  import java.util.Collections;
  
  import org.apache.asterix.cloud.clients.ICloudClient;
  import org.apache.asterix.cloud.lazy.NoOpParallelCacher;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  import org.apache.hyracks.api.io.FileReference;
  import org.apache.hyracks.control.nc.io.IOManager;
  
  /**
   * Initial accessor to allow {@link org.apache.asterix.common.transactions.IGlobalTransactionContext} to work before
   * initializing the NC's partitions
   */
  public class InitialCloudAccessor extends ReplaceableCloudAccessor {
      public static final ILazyAccessorReplacer NO_OP_REPLACER = () -> {
      };
  
      public InitialCloudAccessor(ICloudClient cloudClient, String bucket, IOManager localIoManager) {
          super(cloudClient, bucket, localIoManager, Collections.emptySet(), NO_OP_REPLACER, NoOpParallelCacher.INSTANCE);
      }
  
      @Override
      public boolean doExists(FileReference fileRef) throws HyracksDataException {
          return localIoManager.exists(fileRef) || cloudClient.exists(bucket, fileRef.getRelativePath());
      }
  
      @Override
      public long doGetSize(FileReference fileReference) throws HyracksDataException {
          if (localIoManager.exists(fileReference)) {
              return localIoManager.getSize(fileReference);
          }
          return cloudClient.getObjectSize(bucket, fileReference.getRelativePath());
      }
  }
  