aws "Cannot create enum from " + regionName + " value!"

Question

I am working on aws. I am getting "Cannot create enum from " + regionName + " value!". I know we could change to the latest SDK jar file, but I want with out changing the jar file to rectify this issue. I am facing this issue at Regions.fromName(String regionName) method. Here is my code:

    for(com.amazonaws.services.ec2.model.Region region : describeRegionsResult.getRegions()){
        String regionName = region.getRegionName();
        Regions regionsValue = fromNames(regionName);
        Region regionToDiscover = Region.getRegion(regionsValue);
    }

Is there is way to convert describeRegionsResult.getRegions() to com.amazonaws.regions.Regions.

Answer 1

The latest version of the Java SDK as of this answer (1.11.13) supports the following Regions:

Enum                    Name
Regions.GovCloud        us-gov-west-1
Regions.US_EAST_1       us-east-1
Regions.US_WEST_1       us-west-1
Regions.US_WEST_2       us-west-2
Regions.EU_WEST_1       eu-west-1
Regions.EU_CENTRAL_1    eu-central-1
Regions.AP_SOUTH_1      ap-south-1
Regions.AP_SOUTHEAST_1  ap-southeast-1
Regions.AP_SOUTHEAST_2  ap-southeast-2
Regions.AP_NORTHEAST_1  ap-northeast-1
Regions.AP_NORTHEAST_2  ap-northeast-2
Regions.SA_EAST_1       sa-east-1
Regions.CN_NORTH_1      cn-north-1

You can see when each region was added into the SDK here: https://github.com/aws/aws-sdk-java/blame/master/aws-java-sdk-core/src/main/java/com/amazonaws/regions/Regions.java

If you are trying to use one of those names with Regions.fromName, but your version of the SDK doesn't have that yet, it is impossible to get an enum for that region. You must upgrade the SDK or keep the region as a String.