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/*
 * 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.druid.common.aws;

import com.amazonaws.auth.AWSCredentialsProviderChain;
import com.amazonaws.auth.EC2ContainerCredentialsProviderWrapper;
import com.amazonaws.auth.EnvironmentVariableCredentialsProvider;
import com.amazonaws.auth.InstanceProfileCredentialsProvider;
import com.amazonaws.auth.SystemPropertiesCredentialsProvider;
import com.amazonaws.auth.WebIdentityTokenCredentialsProvider;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;

public class AWSCredentialsUtils
{
  public static AWSCredentialsProviderChain defaultAWSCredentialsProviderChain(final AWSCredentialsConfig config)
  {
    return new AWSCredentialsProviderChain(
        new ConfigDrivenAwsCredentialsConfigProvider(config),
        new LazyFileSessionCredentialsProvider(config),
        new EnvironmentVariableCredentialsProvider(),
        new SystemPropertiesCredentialsProvider(),
        WebIdentityTokenCredentialsProvider.create(),        
        new ProfileCredentialsProvider(),
        new EC2ContainerCredentialsProviderWrapper(),
        InstanceProfileCredentialsProvider.getInstance());
  }
}