terraform/builtin/providers/aws/resource_aws_iam_role.go

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package aws
import (
"fmt"
"regexp"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/service/iam"
"github.com/hashicorp/terraform/helper/resource"
"github.com/hashicorp/terraform/helper/schema"
)
func resourceAwsIamRole() *schema.Resource {
return &schema.Resource{
Create: resourceAwsIamRoleCreate,
Read: resourceAwsIamRoleRead,
Update: resourceAwsIamRoleUpdate,
Delete: resourceAwsIamRoleDelete,
Schema: map[string]*schema.Schema{
"arn": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
"unique_id": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
"name": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Computed: true,
ForceNew: true,
ConflictsWith: []string{"name_prefix"},
ValidateFunc: func(v interface{}, k string) (ws []string, errors []error) {
// https://github.com/boto/botocore/blob/2485f5c/botocore/data/iam/2010-05-08/service-2.json#L8329-L8334
value := v.(string)
if len(value) > 64 {
errors = append(errors, fmt.Errorf(
"%q cannot be longer than 64 characters", k))
}
if !regexp.MustCompile("^[\\w+=,.@-]*$").MatchString(value) {
errors = append(errors, fmt.Errorf(
"%q must match [\\w+=,.@-]", k))
}
return
},
},
"name_prefix": &schema.Schema{
Type: schema.TypeString,
Optional: true,
ForceNew: true,
ValidateFunc: func(v interface{}, k string) (ws []string, errors []error) {
// https://github.com/boto/botocore/blob/2485f5c/botocore/data/iam/2010-05-08/service-2.json#L8329-L8334
value := v.(string)
if len(value) > 32 {
errors = append(errors, fmt.Errorf(
"%q cannot be longer than 32 characters, name is limited to 64", k))
}
if !regexp.MustCompile("^[\\w+=,.@-]*$").MatchString(value) {
errors = append(errors, fmt.Errorf(
"%q must match [\\w+=,.@-]", k))
}
return
},
},
"path": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Default: "/",
ForceNew: true,
},
"assume_role_policy": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
},
}
}
func resourceAwsIamRoleCreate(d *schema.ResourceData, meta interface{}) error {
iamconn := meta.(*AWSClient).iamconn
var name string
if v, ok := d.GetOk("name"); ok {
name = v.(string)
} else if v, ok := d.GetOk("name_prefix"); ok {
name = resource.PrefixedUniqueId(v.(string))
} else {
name = resource.UniqueId()
}
request := &iam.CreateRoleInput{
Path: aws.String(d.Get("path").(string)),
RoleName: aws.String(name),
AssumeRolePolicyDocument: aws.String(d.Get("assume_role_policy").(string)),
}
var createResp *iam.CreateRoleOutput
err := resource.Retry(30*time.Second, func() *resource.RetryError {
var err error
createResp, err = iamconn.CreateRole(request)
// IAM users (referenced in Principal field of assume policy)
// can take ~30 seconds to propagate in AWS
if isAWSErr(err, "MalformedPolicyDocument", "Invalid principal in policy") {
return resource.RetryableError(err)
}
return resource.NonRetryableError(err)
})
if err != nil {
return fmt.Errorf("Error creating IAM Role %s: %s", name, err)
}
return resourceAwsIamRoleReadResult(d, createResp.Role)
}
func resourceAwsIamRoleRead(d *schema.ResourceData, meta interface{}) error {
iamconn := meta.(*AWSClient).iamconn
request := &iam.GetRoleInput{
RoleName: aws.String(d.Id()),
}
getResp, err := iamconn.GetRole(request)
if err != nil {
if iamerr, ok := err.(awserr.Error); ok && iamerr.Code() == "NoSuchEntity" { // XXX test me
d.SetId("")
return nil
}
return fmt.Errorf("Error reading IAM Role %s: %s", d.Id(), err)
}
return resourceAwsIamRoleReadResult(d, getResp.Role)
}
func resourceAwsIamRoleUpdate(d *schema.ResourceData, meta interface{}) error {
iamconn := meta.(*AWSClient).iamconn
if d.HasChange("assume_role_policy") {
assumeRolePolicyInput := &iam.UpdateAssumeRolePolicyInput{
RoleName: aws.String(d.Id()),
PolicyDocument: aws.String(d.Get("assume_role_policy").(string)),
}
_, err := iamconn.UpdateAssumeRolePolicy(assumeRolePolicyInput)
if err != nil {
if iamerr, ok := err.(awserr.Error); ok && iamerr.Code() == "NoSuchEntity" {
d.SetId("")
return nil
}
return fmt.Errorf("Error Updating IAM Role (%s) Assume Role Policy: %s", d.Id(), err)
}
}
return nil
}
func resourceAwsIamRoleReadResult(d *schema.ResourceData, role *iam.Role) error {
d.SetId(*role.RoleName)
if err := d.Set("name", role.RoleName); err != nil {
return err
}
if err := d.Set("arn", role.Arn); err != nil {
return err
}
if err := d.Set("path", role.Path); err != nil {
return err
}
if err := d.Set("unique_id", role.RoleId); err != nil {
return err
}
return nil
}
func resourceAwsIamRoleDelete(d *schema.ResourceData, meta interface{}) error {
iamconn := meta.(*AWSClient).iamconn
// Roles cannot be destroyed when attached to an existing Instance Profile
resp, err := iamconn.ListInstanceProfilesForRole(&iam.ListInstanceProfilesForRoleInput{
RoleName: aws.String(d.Id()),
})
if err != nil {
return fmt.Errorf("Error listing Profiles for IAM Role (%s) when trying to delete: %s", d.Id(), err)
}
// Loop and remove this Role from any Profiles
if len(resp.InstanceProfiles) > 0 {
for _, i := range resp.InstanceProfiles {
_, err := iamconn.RemoveRoleFromInstanceProfile(&iam.RemoveRoleFromInstanceProfileInput{
InstanceProfileName: i.InstanceProfileName,
RoleName: aws.String(d.Id()),
})
if err != nil {
return fmt.Errorf("Error deleting IAM Role %s: %s", d.Id(), err)
}
}
}
request := &iam.DeleteRoleInput{
RoleName: aws.String(d.Id()),
}
if _, err := iamconn.DeleteRole(request); err != nil {
return fmt.Errorf("Error deleting IAM Role %s: %s", d.Id(), err)
}
return nil
}