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The KSC SDK for Java - Core module holds the classes that is used by the individual service clients to interact with KSC Web Services. Users need to depend on KSC-java-sdk artifact for accessing individual client classes.

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/*
 * Copyright 2015-2016 ksyun.com, Inc. or its affiliates. All Rights Reserved.
 *
 * 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
 *
 *  http://ksyun.com/apache2.0
 *
 * 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.ksc.auth;

import com.ksc.auth.profile.ProfileCredentialsProvider;

/**
 * AWS credentials provider chain that looks for credentials in this order:
 * 
 *   Environment Variables -
 *      AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY
 *      (RECOMMENDED since they are recognized by all the AWS SDKs and CLI except for .NET),
 *      or AWS_ACCESS_KEY and AWS_SECRET_KEY (only recognized by Java SDK)
 *   
 *   Java System Properties - aws.accessKeyId and aws.secretKey
 *   Credential profiles file at the default location (~/.aws/credentials) shared by all AWS SDKs and the AWS CLI
 *   Instance profile credentials delivered through the Amazon EC2 metadata service
 * 
 *
 * @see EnvironmentVariableCredentialsProvider
 * @see SystemPropertiesCredentialsProvider
 * @see ProfileCredentialsProvider
 * @see InstanceProfileCredentialsProvider
 */
public class DefaultAWSCredentialsProviderChain extends AWSCredentialsProviderChain {
    public DefaultAWSCredentialsProviderChain() {
        super(new EnvironmentVariableCredentialsProvider(),
              new SystemPropertiesCredentialsProvider(),
              new ProfileCredentialsProvider());
    }
}