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/*
* Copyright 2013-2022 Amazon Technologies, 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://aws.amazon.com/apache2.0
*
* 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.amazonaws.regions;
import com.amazonaws.AmazonClientException;
import org.apache.commons.logging.LogFactory;
import com.amazonaws.util.EC2MetadataUtils;
/**
* Enumeration of region names
*/
public enum Regions {
GovCloud("us-gov-west-1", "AWS GovCloud (US)"),
US_GOV_EAST_1("us-gov-east-1", "AWS GovCloud (US-East)"),
US_EAST_1("us-east-1", "US East (N. Virginia)"),
US_EAST_2("us-east-2", "US East (Ohio)"),
US_WEST_1("us-west-1", "US West (N. California)"),
US_WEST_2("us-west-2", "US West (Oregon)"),
EU_WEST_1("eu-west-1", "EU (Ireland)"),
EU_WEST_2("eu-west-2", "EU (London)"),
EU_WEST_3("eu-west-3", "EU (Paris)"),
EU_CENTRAL_1("eu-central-1", "EU (Frankfurt)"),
EU_CENTRAL_2("eu-central-2", "EU (Zurich)"),
EU_NORTH_1("eu-north-1", "EU (Stockholm)"),
EU_SOUTH_1("eu-south-1", "EU (Milan)"),
EU_SOUTH_2("eu-south-2", "EU (Spain)"),
AP_EAST_1("ap-east-1", "Asia Pacific (Hong Kong)"),
AP_SOUTH_1("ap-south-1", "Asia Pacific (Mumbai)"),
AP_SOUTHEAST_1("ap-southeast-1", "Asia Pacific (Singapore)"),
AP_SOUTHEAST_2("ap-southeast-2", "Asia Pacific (Sydney)"),
AP_SOUTHEAST_3("ap-southeast-3", "Asia Pacific (Jakarta)"),
AP_NORTHEAST_1("ap-northeast-1", "Asia Pacific (Tokyo)"),
AP_NORTHEAST_2("ap-northeast-2", "Asia Pacific (Seoul)"),
AP_NORTHEAST_3("ap-northeast-3", "Asia Pacific (Osaka)"),
SA_EAST_1("sa-east-1", "South America (Sao Paulo)"),
CN_NORTH_1("cn-north-1", "China (Beijing)"),
CN_NORTHWEST_1("cn-northwest-1", "China (Ningxia)"),
CA_CENTRAL_1("ca-central-1", "Canada (Central)"),
ME_CENTRAL_1("me-central-1", "Middle East (UAE)"),
ME_SOUTH_1("me-south-1", "Middle East (Bahrain)"),
AF_SOUTH_1("af-south-1", "Africa (Cape Town)"),
US_ISO_EAST_1("us-iso-east-1", "US ISO East"),
US_ISOB_EAST_1("us-isob-east-1", "US ISOB East (Ohio)"),
US_ISO_WEST_1("us-iso-west-1", "US ISO West")
;
/**
* The default region that new customers in the US are encouraged to use
* when using AWS services for the first time.
*/
public static final Regions DEFAULT_REGION = US_WEST_2;
private final String name;
private final String description;
private Regions(String name, String description) {
this.name = name;
this.description = description;
}
/**
* The name of this region, used in the regions.xml file to identify it.
*/
public String getName() {
return name;
}
/**
* Descriptive readable name for this region.
*/
public String getDescription() {
return description;
}
/**
* Returns a region enum corresponding to the given region name.
*
* @param regionName
* The name of the region. Ex.: eu-west-1
* @return Region enum representing the given region name.
*/
public static Regions fromName(String regionName) {
for (Regions region : Regions.values()) {
if (region.getName().equals(regionName)) {
return region;
}
}
throw new IllegalArgumentException("Cannot create enum from " + regionName + " value!");
}
/**
* Returns a Region object representing the region the application is
* running in, when running in EC2. If this method is called from a non-EC2
* environment, it will return null.
*/
public static Region getCurrentRegion() {
try {
final String region = EC2MetadataUtils.getEC2InstanceRegion();
if (region != null)
return RegionUtils.getRegion(region);
} catch (AmazonClientException e) {
LogFactory.getLog(Regions.class).debug(
"Ignoring failure to retrieve the region: " + e.getMessage());
}
return null;
}
}
