GetTopicAttributes - Simple Message Queue (formerly MNS)

Call the GetTopicAttributes operation to retrieve the properties of a topic.

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Test

RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.
API: The API that you can call to perform the action.
Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.
Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.
- For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.
- For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.
Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.
Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

mns:GetTopicAttributes

get

*Topic

acs:mns:{#regionId}:{#accountId}:/topics/{#TopicName}

None

Request parameters

Parameter	Type	Required	Description	Example
TopicName	string	Yes	The name of the topic.	demo-topic
Tag	array<object>	No	The list of resource tags.
	object	No	The list of tags.
Key	string	No	The key of the tag.	tag1
Value	string	No	The value of the tag.	test

Response elements

Element	Type	Description	Example
	object
RequestId	string	The ID of the request.	06273500-249F-5863-121D-74D51123****
Code	integer	The response code.	200
Status	string	The status of the response.	Success
Message	string	The response message.	operation success
Success	boolean	Indicates whether the request was successful.	true
Data	object	The response data.
TopicName	string	The name of the topic.	demo-topic
MessageCount	integer	The number of messages in the topic.	0
MaxMessageSize	integer	The maximum length of a message body that can be sent to the topic, in bytes.	65536
MessageRetentionPeriod	integer	The maximum period for which a message can be retained in the topic, in seconds. After this period elapses from the time the message is sent, the message is deleted regardless of whether it has been successfully pushed to subscribers.	86400
CreateTime	integer	The time when the topic was created. The value is a UNIX timestamp that represents the number of seconds that have elapsed since 00:00:00 UTC on January 1, 1970.	1449554277
LastModifyTime	integer	The last time the topic properties were modified. The value is a UNIX timestamp that represents the number of seconds that have elapsed since 00:00:00 UTC on January 1, 1970.	1449554460
LoggingEnabled	boolean	Indicates whether Log Management is enabled. True: Enabled. False: Disabled.	True
Tags	array<object>	The list of resource tags.
	object	A tag.
TagKey	string	The key of the tag.	tag1
TagValue	string	The value of the tag.	test
TopicType	string	The type of the topic. Valid values: normal: Standard topic fifo: FIFO topic	normal
TopicUrl	string		http:// 111111111****.mns.us-west-1.aliyuncs.com/topics/testTopic
TopicInnerUrl	string		http:// 111111111****.mns.us-west-1-internal.aliyuncs.com/topics/testTopic

Examples

Success response

JSON format

{
  "RequestId": "06273500-249F-5863-121D-74D51123****",
  "Code": 200,
  "Status": "Success",
  "Message": "operation success",
  "Success": true,
  "Data": {
    "TopicName": "demo-topic",
    "MessageCount": 0,
    "MaxMessageSize": 65536,
    "MessageRetentionPeriod": 86400,
    "CreateTime": 1449554277,
    "LastModifyTime": 1449554460,
    "LoggingEnabled": true,
    "Tags": [
      {
        "TagKey": "tag1",
        "TagValue": "test"
      }
    ],
    "TopicType": "normal",
    "TopicUrl": "http:// 111111111****.mns.us-west-1.aliyuncs.com/topics/testTopic",
    "TopicInnerUrl": "http:// 111111111****.mns.us-west-1-internal.aliyuncs.com/topics/testTopic"
  }
}

Error codes

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.