/*
 * 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.hudi.aws.credentials;

import com.amazonaws.auth.AWSCredentialsProvider;
import com.amazonaws.auth.AWSCredentialsProviderChain;
import com.amazonaws.auth.DefaultAWSCredentialsProviderChain;

import java.util.ArrayList;
import java.util.List;
import java.util.Properties;

/**
 * Factory class for Hoodie AWSCredentialsProvider.
 */
public class HoodieAWSCredentialsProviderFactory {
  public static AWSCredentialsProvider getAwsCredentialsProvider(Properties props) {
    return getAwsCredentialsProviderChain(props);
  }

  private static AWSCredentialsProvider getAwsCredentialsProviderChain(Properties props) {
    List<AWSCredentialsProvider> providers = new ArrayList<>();
    providers.add(new HoodieConfigAWSCredentialsProvider(props));
    providers.add(new DefaultAWSCredentialsProviderChain());
    AWSCredentialsProviderChain providerChain = new AWSCredentialsProviderChain(providers);
    providerChain.setReuseLastProvider(true);
    return providerChain;
  }
}
