forked from awsdocs/aws-doc-sdk-examples
/
iam_attachuserpolicy.go
73 lines (62 loc) · 1.77 KB
/
iam_attachuserpolicy.go
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// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
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/iam"
)
// Usage:
// go run iam_attachuserpolicy.go <role name>
func main() {
// Initialize a session in us-west-2 that the SDK will use to load
// credentials from the shared credentials file ~/.aws/credentials.
sess, err := session.NewSession(&aws.Config{
Region: aws.String("us-west-2")},
)
// Create a IAM service client.
svc := iam.New(sess)
var pageErr error
policyName := "AmazonDynamoDBFullAccess"
policyArn := "arn:aws:iam::aws:policy/AmazonDynamoDBFullAccess"
// Paginate through all role policies. If our role exists on any role
// policy we will set the pageErr and return false. Stopping the
// pagination.
err = svc.ListAttachedRolePoliciesPages(
&iam.ListAttachedRolePoliciesInput{
RoleName: &os.Args[1],
},
func(page *iam.ListAttachedRolePoliciesOutput, lastPage bool) bool {
if page != nil && len(page.AttachedPolicies) > 0 {
for _, policy := range page.AttachedPolicies {
if *policy.PolicyName == policyName {
pageErr = fmt.Errorf("%s is already attached to this role", policyName)
return false
}
}
// We should keep paginating because we did not find our role
return true
}
return false
},
)
if pageErr != nil {
fmt.Println("Error", pageErr)
return
}
if err != nil {
fmt.Println("Error", err)
return
}
_, err = svc.AttachRolePolicy(&iam.AttachRolePolicyInput{
PolicyArn: &policyArn,
RoleName: &os.Args[1],
})
if err != nil {
fmt.Println("Unable to attach role policy to role")
return
}
fmt.Println("Role attached successfully")
}