Help Center/ Identity and Access Management/ API Reference/ API/ Custom Policy Management/ Querying Custom Policy Details
Updated on 2025-12-27 GMT+08:00
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Querying Custom Policy Details

Function

This API is provided for the administrator to query the details of a specified custom policy.

The API can be called using both the global endpoint and region-specific endpoints.

Authorization Information

Each account is authorized to call all APIs, but its IAM users must obtain the required permissions. For details, see Permissions and Supported Actions.

URI

GET /v3.0/OS-ROLE/roles/{role_id}

Table 1 URI parameters

Parameter

Mandatory

Type

Description

role_id

Yes

String

Custom policy ID. For details about how to obtain a custom policy ID, see Custom Policy ID.

Request Parameters

Table 2 Parameters in the request header

Parameter

Mandatory

Type

Description

Content-Type

Yes

String

Fill application/json;charset=utf8 in this field.

X-Auth-Token

Yes

String

Access token issued to a user to bear its identity and permissions.

For details about the permissions required by the token, see Actions.

Response Parameters

Table 3 Parameters in the response body

Parameter

Type

Description

role

Object

Custom policy information.
Table 4 role

Parameter

Type

Description

domain_id

String

Account ID.

references

Integer

Number of references.

updated_time

String

Time when the custom policy was last updated.

NOTE:

The value is a Unix timestamp in millisecond, for example, 1687913793000.

created_time

String

Time when the custom policy was created.

NOTE:

The value is a Unix timestamp in millisecond, for example, 1687913793000.

description_cn

String

Description of the custom policy in Chinese. This parameter is returned in the response only when description_cn is specified during custom policy creation.

catalog

String

Service catalog.

name

String

Name of the custom policy.

description

String

Description of the custom policy.

links

Object

Resource link of the custom policy.

id

String

Custom policy ID.

display_name

String

Display name of the custom policy.

type

String

Display mode.

NOTE:
  • AX: the global service project
  • XA: region-specific projects
  • This parameter must be set to either AX or XA.

policy

Object

Content of the custom policy.
Table 5 role.links

Parameter

Type

Description

self

String

Resource link.
Table 6 role.policy

Parameter

Type

Description

Version

String

Policy version.

NOTE:
  • 1.0: System-defined role. Only a limited number of service-level roles are provided for authorization.
  • 1.1: Policy. A policy defines the permissions required to perform operations on a specific cloud resource under certain conditions.

Statement

Array of objects

Statement of the policy, which describes details of a custom policy.
Table 7 role.policy.Statement

Parameter

Type

Description

Action

Array of strings

Specific operation permissions on a resource. For details about supported actions, see "Permissions and Supported Actions" in the API Reference of cloud services.

NOTE:
  • The value format is Service name:Resource type:Operation, for example, vpc:ports:create.
  • Service name: indicates the product name, such as ecs, evs, or vpc. Only lowercase letters are allowed. Resource types and operations are not case-sensitive. You can use an asterisk (*) to represent all operations.
  • In the case of a custom policy for agencies, this parameter value should be "Action": ["iam:tokens:assume"].

Effect

String

Effect of the permission. The value can be Allow or Deny. If both Allow and Deny statements are found in a policy, the authentication starts from the Deny statements.

Options:

  • Allow
  • Deny

Condition

Map<String,Map<String,Array<String>>>

Conditions for the permission to take effect. If this parameter is not specified during policy creation, it will not be returned in the response.

NOTE:

Take the condition in the sample request as an example, the values of the condition key (obs:prefix) and string (public) must be equal (StringEquals).

 "Condition": {
              "StringEquals": {
                "obs:prefix": [
                  "public"
                ]
              }
            }

Resource

Object

Cloud resource. If this parameter is not specified during policy creation, it will not be returned in the response.

NOTE:
  • Format: ::::. For example, obs:::bucket:*. Asterisks are allowed.
  • The region segment can be * or a region accessible to the user. The specified resource must belong to the corresponding service that actually exists.
  • In the case of a custom policy for agencies, the type of this parameter is Object, and the value should be "Resource": {"uri": ["/iam/agencies/agencyTest"]}.

Example Request

Request for querying custom policy details

GET https://iam.myhuaweicloud.eu/v3.0/OS-ROLE/roles/{role_id}

Example Response

Status code: 200

The request is successful.

{
    "role": {
        "domain_id": "d78cbac186b744899480f25bd02...",
        "references": 0,
        "description_cn": "Description in Chinese",
        "catalog": "CUSTOMED",
        "name": "custom_d78cbac186b744899480f25bd022f468_11",
        "description": "IAMDescription",
        "links": {
            "self": "https://iam.myhuaweicloud.eu/v3/roles/a24a71dcc41f4da989c2a1c900b52d1a"
        },
        "id": "a24a71dcc41f4da989c2a1c900b52d1a",
        "display_name": "IAMCloudServicePolicy",
        "type": "AX",
        "policy": {
            "Version": "1.1",
            "Statement": [
                {
                    "Condition": {
                        "StringStartWith": {
                            "g:ProjectName": [
                                "eu-west-101"
                            ]
                        }
                    },
                    "Action": [
                        "obs:bucket:GetBucketAcl"
                    ],
                    "Resource": [
                        "obs:*:*:bucket:*"
                    ],
                    "Effect": "Allow"
                }
            ]
        }
    }
}

Status Codes

Status Code

Description

200

The request is successful.

400

Invalid parameters.

401

Authentication failed.

403

Access denied.

500

Internal server error.

Error Codes

None

Parent topic: Custom Policy Management