check_caller_identity.go

package main

import (
	"fmt"
	"os"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/sts"
)

func main() {
	_ = os.Setenv("AWS_SDK_LOAD_CONFIG", "1")
	sess, err := session.NewSessionWithOptions(session.Options{
		Config: aws.Config{Region: aws.String("us-east-2")},
	})
	if err != nil {
		fmt.Println("Error creating session:", err)
		return
	}
	svc := sts.New(sess)
	result, err := svc.GetCallerIdentity(&sts.GetCallerIdentityInput{})
	if err != nil {
		fmt.Println("Error calling GetCallerIdentity:", err)
		return
	}
	fmt.Println("ARN:", *result.Arn)
}