Querying SMN Topics_Task Details_APIs V5.0_API Reference_Data Replication Service-Huawei Cloud

Function

This API is used to query SMN topics.

Authorization Information

Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions.

If you are using role/policy-based authorization, see Permissions and Supported Actions for details on the required permissions.
If you are using identity policy-based authorization, no identity policy-based permissions are required for calling this API.

URI

GET /v5/{project_id}/smn/topic-info

**Table 1** URI parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID of a tenant in a region. For details about how to obtain the project ID, see Obtaining a Project ID.

Request Parameters

**Table 2** Request header parameters
Parameter	Mandatory	Type	Description
Content-Type	No	String	MIME type of the request body. Use the default value application/json. For APIs used to upload objects or images, the value varies depending on the flow type.
X-Auth-Token	Yes	String	User token obtained from IAM. It is a response to the API for obtaining a user token. This API is the only one that does not require authentication. After a request is processed, the value of X-Subject-Token in the header is the token value.
X-Language	No	String	Request language type Enumerated values: en-us zh-cn

Response Parameters

Status code: 200

**Table 3** Response body parameters
Parameter	Type	Description
topics	Array of objects	Topic information. For details, see SmnTopicInfo.
total_count	Integer	Total number of subjects

**Table 4** SmnTopicInfo
Parameter	Type	Description
name	String	Topic name.
urn	String	Resource identifier of a topic, which is unique
description	String	Topic description.
push_policy	String	Message push policy. The value can be: RETRY_ON_FAILURE: Failure messages will be saved in message queues. DROP_ON_FAILURE: Failure messages will be discarded.

Status code: 400

**Table 5** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error message.

Example Request

Querying all recorded information

https://{endpoint}/v5/054ba152d480d55b2f5dc0069e7ddef0/smn/topic-info

Example Response

Status code: 200

{
  "topics" : [ {
    "urn" : "urn:smn:cn-southwest-184:5237e10fe9aa4ad5b16b6a5245248314:lihua",
    "description" : "",
    "name" : "lihua",
    "push_policy" : "RETRY_ON_FAILURE"
  } ],
  "total_count" : 1
}

Status code: 400

Bad Request

{
  "error_code" : "DRS.M00261",
  "error_msg" : "Invalid project ID."
}

Status Code

Status Code	Description
200	OK
400	Bad Request

For other statuses, see Status Code.

Error Code

For details, see Error Code.

Querying SMN Topics