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package aws
import (
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/sts"
)
// STS -
type STS struct {
identifier func() CallerIdentitifier
cache map[string]any
}
var identifierClient CallerIdentitifier
// CallerIdentitifier - an interface to wrap GetCallerIdentity
type CallerIdentitifier interface {
GetCallerIdentity(*sts.GetCallerIdentityInput) (*sts.GetCallerIdentityOutput, error)
}
// NewSTS -
func NewSTS(_ ClientOptions) *STS {
return &STS{
identifier: func() CallerIdentitifier {
if identifierClient == nil {
session := SDKSession()
identifierClient = sts.New(session)
}
return identifierClient
},
cache: make(map[string]any),
}
}
func (s *STS) getCallerID() (*sts.GetCallerIdentityOutput, error) {
i := s.identifier()
if val, ok := s.cache["GetCallerIdentity"]; ok {
if c, ok := val.(*sts.GetCallerIdentityOutput); ok {
return c, nil
}
}
in := &sts.GetCallerIdentityInput{}
out, err := i.GetCallerIdentity(in)
if err != nil {
return nil, err
}
s.cache["GetCallerIdentity"] = out
return out, nil
}
// UserID -
func (s *STS) UserID() (string, error) {
cid, err := s.getCallerID()
if err != nil {
return "", err
}
return aws.StringValue(cid.UserId), nil
}
// Account -
func (s *STS) Account() (string, error) {
cid, err := s.getCallerID()
if err != nil {
return "", err
}
return aws.StringValue(cid.Account), nil
}
// Arn -
func (s *STS) Arn() (string, error) {
cid, err := s.getCallerID()
if err != nil {
return "", err
}
return aws.StringValue(cid.Arn), nil
}
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