provider/aws: Remove roles from profiles when trying to delete

builtin/providers/aws/resource_aws_iam_role.go

@@ -102,6 +102,27 @@ func resourceAwsIamRoleReadResult(d *schema.ResourceData, role *iam.Role) error
 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()),
 	}

builtin/providers/aws/resource_aws_iam_role_test.go

@@ -30,6 +30,31 @@ func TestAccAWSRole_normal(t *testing.T) {
 	})
 }
 
+func TestAccAWSRole_testNameChange(t *testing.T) {
+	var conf iam.GetRoleOutput
+
+	resource.Test(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckAWSRoleDestroy,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: testAccAWSRolePre,
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckAWSRoleExists("aws_iam_role.role_update_test", &conf),
+				),
+			},
+
+			resource.TestStep{
+				Config: testAccAWSRolePost,
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckAWSRoleExists("aws_iam_role.role_update_test", &conf),
+				),
+			},
+		},
+	})
+}
+
 func testAccCheckAWSRoleDestroy(s *terraform.State) error {
 	iamconn := testAccProvider.Meta().(*AWSClient).iamconn
 
@@ -105,3 +130,101 @@ resource "aws_iam_role" "role" {
 	assume_role_policy = "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Effect\":\"Allow\",\"Principal\":{\"Service\":[\"ec2.amazonaws.com\"]},\"Action\":[\"sts:AssumeRole\"]}]}"
 }
 `
+
+const testAccAWSRolePre = `
+resource "aws_iam_role" "role_update_test" {
+  name = "tf_old_name"
+  path = "/test/"
+  assume_role_policy = <<EOF
+{
+  "Version": "2012-10-17",
+  "Statement": [
+    {
+      "Action": "sts:AssumeRole",
+      "Principal": {
+        "Service": "ec2.amazonaws.com"
+      },
+      "Effect": "Allow",
+      "Sid": ""
+    }
+  ]
+}
+EOF
+}
+
+resource "aws_iam_role_policy" "role_update_test" {
+  name = "role_update_test"
+  role = "${aws_iam_role.role_update_test.id}"
+  policy = <<EOF
+{
+  "Version": "2012-10-17",
+  "Statement": [
+    {
+      "Effect": "Allow",
+      "Action": [
+        "s3:GetBucketLocation",
+        "s3:ListAllMyBuckets"
+      ],
+      "Resource": "arn:aws:s3:::*"
+    }
+  ]
+}
+EOF
+}
+
+resource "aws_iam_instance_profile" "role_update_test" {
+  name = "role_update_test"
+  path = "/test/"
+  roles = ["${aws_iam_role.role_update_test.name}"]
+}
+
+`
+
+const testAccAWSRolePost = `
+resource "aws_iam_role" "role_update_test" {
+  name = "tf_new_name"
+  path = "/test/"
+  assume_role_policy = <<EOF
+{
+  "Version": "2012-10-17",
+  "Statement": [
+    {
+      "Action": "sts:AssumeRole",
+      "Principal": {
+        "Service": "ec2.amazonaws.com"
+      },
+      "Effect": "Allow",
+      "Sid": ""
+    }
+  ]
+}
+EOF
+}
+
+resource "aws_iam_role_policy" "role_update_test" {
+  name = "role_update_test"
+  role = "${aws_iam_role.role_update_test.id}"
+  policy = <<EOF
+{
+  "Version": "2012-10-17",
+  "Statement": [
+    {
+      "Effect": "Allow",
+      "Action": [
+        "s3:GetBucketLocation",
+        "s3:ListAllMyBuckets"
+      ],
+      "Resource": "arn:aws:s3:::*"
+    }
+  ]
+}
+EOF
+}
+
+resource "aws_iam_instance_profile" "role_update_test" {
+  name = "role_update_test"
+  path = "/test/"
+  roles = ["${aws_iam_role.role_update_test.name}"]
+}
+
+`