Allocate an Elastic IP address for Amazon EC2 using an Amazon SDK

    /// <summary>
    /// Allocate an Elastic IP address.
    /// </summary>
    /// <returns>The allocation Id of the allocated address.</returns>
    public async Task<string> AllocateAddress()
    {
        var request = new AllocateAddressRequest();

        var response = await _amazonEC2.AllocateAddressAsync(request);
        return response.AllocationId;
    }

    Aws::EC2::EC2Client ec2Client(clientConfiguration);

    Aws::EC2::Model::AllocateAddressRequest request;
    request.SetDomain(Aws::EC2::Model::DomainType::vpc);

    const Aws::EC2::Model::AllocateAddressOutcome outcome =
            ec2Client.AllocateAddress(request);
    if (!outcome.IsSuccess()) {
        std::cerr << "Failed to allocate Elastic IP address:" <<
                  outcome.GetError().GetMessage() << std::endl;
        return false;
    }

    allocationId = outcome.GetResult().GetAllocationId();

    public static String getAllocateAddress( Ec2Client ec2, String instanceId) {

        try {
            AllocateAddressRequest allocateRequest = AllocateAddressRequest.builder()
                .domain(DomainType.VPC)
                .build();

            AllocateAddressResponse allocateResponse = ec2.allocateAddress(allocateRequest);
            String allocationId = allocateResponse.allocationId();
            AssociateAddressRequest associateRequest = AssociateAddressRequest.builder()
               .instanceId(instanceId)
               .allocationId(allocationId)
               .build();

            AssociateAddressResponse associateResponse = ec2.associateAddress(associateRequest);
            return associateResponse.associationId();

        } catch (Ec2Exception e) {
           System.err.println(e.awsErrorDetails().errorMessage());
           System.exit(1);
        }
        return "";
    }

import { AllocateAddressCommand } from "@aws-sdk/client-ec2";

import { client } from "../libs/client.js";

export const main = async () => {
  const command = new AllocateAddressCommand({});

  try {
    const { AllocationId, PublicIp } = await client.send(command);
    console.log("A new IP address has been allocated to your account:");
    console.log(`ID: ${AllocationId} Public IP: ${PublicIp}`);
    console.log(
      "You can view your IP addresses in the AWS Management Console for Amazon EC2. Look under Network & Security > Elastic IPs"
    );
  } catch (err) {
    console.error(err);
  }
};

suspend fun getAllocateAddress(instanceIdVal: String?): String? {

    val allocateRequest = AllocateAddressRequest {
        domain = DomainType.Vpc
    }

    Ec2Client { region = "us-west-2" }.use { ec2 ->
        val allocateResponse = ec2.allocateAddress(allocateRequest)
        val allocationIdVal = allocateResponse.allocationId

        val request = AssociateAddressRequest {
            instanceId = instanceIdVal
            allocationId = allocationIdVal
        }

        val associateResponse = ec2.associateAddress(request)
        return associateResponse.associationId
    }
}

class ElasticIpWrapper:
    """Encapsulates Amazon Elastic Compute Cloud (Amazon EC2) Elastic IP address actions."""
    def __init__(self, ec2_resource, elastic_ip=None):
        """
        :param ec2_resource: A Boto3 Amazon EC2 resource. This high-level resource
                             is used to create additional high-level objects
                             that wrap low-level Amazon EC2 service actions.
        :param elastic_ip: A Boto3 VpcAddress object. This is a high-level object that
                           wraps Elastic IP actions.
        """
        self.ec2_resource = ec2_resource
        self.elastic_ip = elastic_ip

    @classmethod
    def from_resource(cls):
        ec2_resource = boto3.resource('ec2')
        return cls(ec2_resource)

    def allocate(self):
        """
        Allocates an Elastic IP address that can be associated with an Amazon EC2
        instance. By using an Elastic IP address, you can keep the public IP address
        constant even when you restart the associated instance.

        :return: The newly created Elastic IP object. By default, the address is not
                 associated with any instance.
        """
        try:
            response = self.ec2_resource.meta.client.allocate_address(Domain='vpc')
            self.elastic_ip = self.ec2_resource.VpcAddress(response['AllocationId'])
        except ClientError as err:
            logger.error(
                "Couldn't allocate Elastic IP. Here's why: %s: %s",
                err.response['Error']['Code'], err.response['Error']['Message'])
            raise
        else:
            return self.elastic_ip

# Creates an Elastic IP address in Amazon Virtual Private Cloud (Amazon VPC).
#
# @param ec2_client [Aws::EC2::Client] An initialized EC2 client.
# @return [String] The allocation ID corresponding to the Elastic IP address.
# @example
#   puts allocate_elastic_ip_address(Aws::EC2::Client.new(region: 'us-west-2'))
def allocate_elastic_ip_address(ec2_client)
  response = ec2_client.allocate_address(domain: "vpc")
  return response.allocation_id
rescue StandardError => e
  puts "Error allocating Elastic IP address: #{e.message}"
  return "Error"
end

    TRY.
        oo_result = lo_ec2->allocateaddress( iv_domain = 'vpc' ).   " oo_result is returned for testing purposes. "
        MESSAGE 'Allocated an Elastic IP address.' TYPE 'I'.
      CATCH /aws1/cx_rt_service_generic INTO DATA(lo_exception).
        DATA(lv_error) = |"{ lo_exception->av_err_code }" - { lo_exception->av_err_msg }|.
        MESSAGE lv_error TYPE 'E'.
    ENDTRY.