NfsResponseHandler.java

/**
 * Copyright 2016-2018 Dell Inc. or its subsidiaries. All rights reserved.
 *
 * <p>Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file
 * except in compliance with the License. A copy of the License is located at
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 * <p>or in the "license" file accompanying this file. This file 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 com.emc.ecs.nfsclient.nfs;

import com.emc.ecs.nfsclient.rpc.RejectStatus;
import com.emc.ecs.nfsclient.rpc.RpcRequest;
import com.emc.ecs.nfsclient.rpc.RpcResponseHandler;
import java.io.FileNotFoundException;
import java.io.IOException;

/**
 * The NFS response handler, used in the wrapper class for post-response actions, including error
 * checking. This base class performs just basic response correctness checking that applies to all
 * NFS responses.
 *
 * @author seibed
 */
public abstract class NfsResponseHandler<T extends NfsResponseBase> extends RpcResponseHandler<T> {

  /** {@inheritDoc} */
  @Override
  public void checkResponse(RpcRequest request) throws IOException {
    if (getResponse().getRejectStatus() == RejectStatus.AUTH_ERROR.getValue()) {
      request.setUsePrivilegedPort(true);
    }
    if (getResponse().getState() != NfsStatus.NFS3_OK.getValue()) {
      int responseState = getResponse().getState();
      if (responseState == NfsStatus.NFS3ERR_NOENT.getValue()) {
        throw new FileNotFoundException(
            request.getErrorMessage() + " status=" + NfsStatus.NFS3ERR_NOENT);
      }
      NfsStatus status = NfsStatus.fromValue(responseState);
      throw new NfsException(status, request.getErrorMessage() + " status=" + status);
    }
  }
}