com.netflix.spinnaker.clouddriver.aws.security.sdkclient.SpinnakerAwsRegionProvider.java Source code

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Here is the source code for com.netflix.spinnaker.clouddriver.aws.security.sdkclient.SpinnakerAwsRegionProvider.java

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/*
 * Copyright 2016 Netflix, Inc.
 *
 * Licensed 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 com.netflix.spinnaker.clouddriver.aws.security.sdkclient;

import com.amazonaws.SdkClientException;
import com.amazonaws.regions.AwsRegionProvider;
import com.amazonaws.regions.AwsRegionProviderChain;
import com.amazonaws.regions.DefaultAwsRegionProviderChain;
import com.amazonaws.regions.Regions;

public class SpinnakerAwsRegionProvider extends AwsRegionProviderChain {

    public SpinnakerAwsRegionProvider() {
        super(new Ec2RegionEnvVarRegionProvider(), new DefaultAwsRegionProviderChain(),
                new RegionsCurrentRegionProvider(), new DefaultRegionProvider());
    }

    private static class Ec2RegionEnvVarRegionProvider extends AwsRegionProvider {
        @Override
        public String getRegion() throws SdkClientException {
            return System.getenv("EC2_REGION");
        }
    }

    private static class RegionsCurrentRegionProvider extends AwsRegionProvider {
        @Override
        public String getRegion() throws SdkClientException {
            return Regions.getCurrentRegion().getName();
        }
    }

    private static class DefaultRegionProvider extends AwsRegionProvider {
        @Override
        public String getRegion() throws SdkClientException {
            return Regions.DEFAULT_REGION.getName();
        }
    }
}