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Huawei OBS Under File System implementation

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/*
 * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
 * (the "License"). You may not use this work except in compliance with the License, which is
 * available at www.apache.org/licenses/LICENSE-2.0
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied, as more fully set forth in the License.
 *
 * See the NOTICE file distributed with this work for information regarding copyright ownership.
 */

package alluxio.underfs.obs;

import com.obs.services.ObsClient;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Map;

/**
 * An extension of ObsClient to support config.
 */
public class ObsClientExt extends ObsClient {
  private static final Logger LOG = LoggerFactory.getLogger(ObsClientExt.class);

  /**
   * Construct obs client.
   *
   * @param accessKey ak in the access key secretKey
   * @param secretKey sk in the access key endPoint
   * @param endPoint OBS endpoint
   * @param conf the map of OBS configuration
   */
  public ObsClientExt(String accessKey, String secretKey, String endPoint,
      Map conf) {
    super(accessKey, secretKey, endPoint);
    for (Map.Entry entry : conf.entrySet()) {
      obsProperties.setProperty(entry.getKey(),
          entry.getValue() == null ? null : entry.getValue().toString());
      LOG.debug("Set obs client conf: {}={}", entry.getKey(), entry.getValue());
    }
  }
}