hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/InconsistentS3ClientFactory.java

/*
 * 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.hadoop.fs.s3a;

import com.amazonaws.ClientConfiguration;
import com.amazonaws.services.s3.AmazonS3;

import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;

/**
 * S3 Client factory used for testing with eventual consistency fault injection.
 * This client is for testing <i>only</i>; it is in the production
 * {@code hadoop-aws} module to enable integration tests to use this
 * just by editing the Hadoop configuration used to bring up the client.
 *
 * The factory uses the older constructor-based instantiation/configuration
 * of the client, so does not wire up metrics, handlers etc.
 */
@InterfaceAudience.Private
@InterfaceStability.Unstable
public class InconsistentS3ClientFactory extends DefaultS3ClientFactory {

  @Override
  protected AmazonS3 buildAmazonS3Client(
      final ClientConfiguration awsConf,
      final S3ClientCreationParameters parameters) {
    LOG.warn("** FAILURE INJECTION ENABLED.  Do not run in production! **");
    InconsistentAmazonS3Client s3
        = new InconsistentAmazonS3Client(
            parameters.getCredentialSet(), awsConf, getConf());
    configureAmazonS3Client(s3,
        parameters.getEndpoint(),
        parameters.isPathStyleAccess());
    return s3;
  }
}