Get IAM Role information programatically using Scala - amazon-web-services

Question

I want to receive the role information for a role name. For example getting the exact ARN identifier.
Somehow this code below is not working. Sadly there is no error message in cloudwatch
import software.amazon.awssdk.services.iam.*;
import com.amazonaws.services.identitymanagement.model._
import com.amazonaws.services.identitymanagement.{AmazonIdentityManagementClient, AmazonIdentityManagement, AmazonIdentityManagementClientBuilder}
// ....
val iamClient = AmazonIdentityManagementClient
.builder()
.withRegion("eu-central-1")
.build()
val roleRequest = new GetRoleRequest();
roleRequest.setRoleName("InfrastructureStack-StandardRoleD-HBLE12VPTWQ")
val result = iamClient.getRole(roleRequest) // <-- Nothing happens after this line
println("wont execute this println statement")
Other services like CognitoIdentityProvider are working perfectly fine.
I also tried the builder pattern for the GetRoleRequest and IamClient.

Answer 1

I got this IAM V2 code working fine. As stated in my comment, setup your dev environment to use AWS SDK for Java V2.
package com.example.iam;
import software.amazon.awssdk.services.iam.model.*;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.iam.IamClient;
public class GetRole {
public static void main(String[] args) {
final String USAGE = "\n" +
"Usage:\n" +
" <policyArn> \n\n" +
"Where:\n" +
" policyArn - a policy ARN that you can obtain from the AWS Management Console. \n\n" ;
// if (args.length != 1) {
// System.out.println(USAGE);
//// System.exit(1);
// }
String roleName = "DynamoDBAutoscaleRole" ; //args[0];
Region region = Region.AWS_GLOBAL;
IamClient iam = IamClient.builder()
.region(region)
.build();
getRoleInformation(iam, roleName);
System.out.println("Done");
iam.close();
}
public static void getRoleInformation(IamClient iam, String roleName) {
try {
GetRoleRequest roleRequest = GetRoleRequest.builder()
.roleName(roleName)
.build();
GetRoleResponse response = iam.getRole(roleRequest) ;
System.out.println("The ARN of the role is " +response.role().arn());
} catch (IamException e) {
System.err.println(e.awsErrorDetails().errorMessage());
System.exit(1);
}
}
}
Output: