Querying a Topic Policy

Description

• API name

  ListTopicAttributes

• Function

  Query a topic policy.

URI

• URI format

  GET /v2/{project_id}/notifications/topics/{topic_urn}/attributes?name={name}

• Parameter description

  Parameter	Mandatory	Type	Description
  project_id	Yes	String	Project ID See Obtaining a Project ID.
  topic_urn	Yes	String	Unique resource ID of a topic. You can obtain it by referring to Querying Topics.
  name	No	String	Specifies the policy name. Only specified policy names are supported. For details, see Topic Attribute List.

  

  If name is not specified, all attribute values of the topic are queried. The supported attribute values are provided in Topic Attribute List.

Request

GET https://{SMN_Endpoint}/v2/{project_id}/notifications/topics/urn:smn:regionId:8bad8a40e0f7462f8c1676e3f93a8183:test_create_topic_v2/attributes?name=access_policy

Response

• Parameter description

  Parameter	Type	Description
  request_id	String	Request ID, which is unique
  attributes	Map	Attribute key-value pair access_policy: topic access policy introduction: description of a topic

• Example response

  {
     "request_id": "6837531fd3f54550927b930180a706bf",
     "attributes": {
     "access_policy": "{
           "Version": "2016-09-07", 
           "Id": "__default_policy_ID", 
           "Statement": [
              {
                "Sid": "__user_pub_0",
                "Effect": "Allow",
                "Principal": {
                  "CSP": [
                           "urn:csp:iam::93dc1b4697ac493d9b7d089569f86b32:root"
                         ]
                   },
                "Action": ["SMN:Publish","SMN:QueryTopicDetail"],
                "Resource": "urn:smn:regionId:8bad8a40e0f7462f8c1676e3f93a8183:aaa"
                },
                {
                "Sid": "__service_pub_0", 
                "Effect": "Allow",
                "Principal": {
                   "Service": ["obs"]
                   },
                "Action": ["SMN:Publish","SMN:QueryTopicDetail"],
                "Resource": "urn:smn:regionId:8bad8a40e0f7462f8c1676e3f93a8183:aaa"
                }
               ]
            }"
         }
    }

  

  The value of access_policy is a JSON character string, which requires escape characters. While in the preceding example, the characters are not escaped. Escape them before using the policy.

Returned Value

See Returned Value.

Error Codes

See Error Codes.