software.amazon.awssdk.regions.providers.DefaultAwsRegionProviderChain Maven / Gradle / Ivy

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A single bundled dependency that includes all service and dependent JARs with third-party libraries relocated to different namespaces.

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/*
 * Copyright 2010-2018 Amazon.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://aws.amazon.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 software.amazon.awssdk.regions.providers;

import software.amazon.awssdk.annotations.SdkProtectedApi;

/**
 * AWS Region provider that looks for the region in this order:
 * 
 *   Check the 'aws.region' system property for the region.
 *   Check the 'AWS_REGION' environment variable for the region.
 *   Check the {user.home}/.aws/credentials and {user.home}/.aws/config files for the region.
 *   If running in EC2, check the EC2 metadata service for the region.
 * 
 */
@SdkProtectedApi
public final class DefaultAwsRegionProviderChain extends AwsRegionProviderChain {
    public DefaultAwsRegionProviderChain() {
        super(new SystemSettingsRegionProvider(), new AwsProfileRegionProvider(),
              new InstanceProfileRegionProvider());
    }
}