My code is not working, I am not getting any output. could you please help in fixing the issue...
package main
import (
"flag"
"fmt"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/credentials/stscreds"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/s3"
)
func main() {
var arn string
var externalID string
const (
defaultARN = ""
arnUsage = "arn:aws:iam::*********:role/***********-role"
defaultExtID = ""
extIDUsage = ""
region = "us-east-1"
)
flag.StringVar(&arn, "arn", defaultARN, arnUsage)
flag.StringVar(&externalID, "extid", defaultExtID, extIDUsage)
flag.Parse()
sess := session.Must(session.NewSession())
conf := createConfig(arn, externalID, region, sess)
fmt.Println("This should print the S3 buckets available in your account. If you passed in an ARN, it will print the S3 buckets in the Assumed Role account.")
s3Svc := s3.New(sess, &conf)
var input *s3.ListBucketsInput
resp, _ := s3Svc.ListBuckets(input)
fmt.Println(resp)
}
func createConfig(arn string, externalID string, region string, sess *session.Session) aws.Config {
conf := aws.Config{Region: aws.String(region)}
if arn != "" {
// if ARN flag is passed in, we need to be able ot assume role here
var creds *credentials.Credentials
if externalID != "" {
// If externalID flag is passed, we need to include it in credentials struct
creds = stscreds.NewCredentials(sess, arn, func(p *stscreds.AssumeRoleProvider) {
p.ExternalID = &externalID
})
} else {
creds = stscreds.NewCredentials(sess, arn, func(p *stscreds.AssumeRoleProvider) {})
}
conf.Credentials = creds
}
return conf
}