DescribeTopic

最后更新时间：2026-01-13 21:52:03

DescribeTopic

最后更新时间： 2026-01-13 21:52:03

1. API Description

Domain name for API request: trocket.intl.tencentcloudapi.com.

This API is used to query topic details. The Offset and Limit parameters are pagination parameters for consumer groups subscribing to this topic. The Filter parameter usage instructions are as follows:.

-The ConsumerGroup name can be obtained from the ConsumeGroupItem in the API response of DescribeConsumerGroupList or from the console.

This API is used to demonstrate Filters.
[{ "Name": "ConsumerGroup", "Values": ["test_group"] }]

A maximum of 200 requests can be initiated per second for this API.

We recommend you to use API Explorer

Try it

API Explorer provides a range of capabilities, including online call, signature authentication, SDK code generation, and API quick search. It enables you to view the request, response, and auto-generated examples.

2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

Parameter Name	Required	Type	Description
Action	Yes	String	Common Params. The value used for this API: DescribeTopic.
Version	Yes	String	Common Params. The value used for this API: 2023-03-08.
Region	Yes	String	Common Params. For more information, please see the list of regions supported by the product.
InstanceId	Yes	String	TDMQ RocketMQ instance ID. It can be obtained from the API DescribeFusionInstanceList or the console.
Topic	Yes	String	Topic name. It can be obtained from TopicItem returned by the API DescribeTopicList or from the console.
Filters.N	No	Array of Filter	Filtering condition list. See the description of the API using this parameter for the usage method.
Offset	No	Integer	Starting position of the query. Default value: 0.
Limit	No	Integer	Maximum number of queried results. Default value: 20.

3. Output Parameters

Parameter Name	Type	Description
InstanceId	String	Instance ID
Topic	String	Topic name
TopicType	String	Topic type. UNSPECIFIED: not specified. NORMAL: normal message. FIFO: sequential message. DELAY: delayed message. TRANSACTION: transaction message.
Remark	String	Remarks
CreatedTime	Integer	Creation time. It is a Unix timestamp (ms).
LastUpdateTime	Integer	Last write time. It is a Unix timestamp (ms).
SubscriptionCount	Integer	Number of Subscriptions
SubscriptionData	Array of SubscriptionData	Subscribe to the relationship list.
MsgTTL	Integer	Message retention period. Unit: hour.
RequestId	String	The unique request ID, generated by the server, will be returned for every request (if the request fails to reach the server for other reasons, the request will not obtain a RequestId). RequestId is required for locating a problem.

4. Example

Example1 Query Topic Details

This example shows you how to query topic details.

Input Example

POST / HTTP/1.1
Host: trocket.intl.tencentcloudapi.com
Content-Type: application/json
X-TC-Action: DescribeTopic
<Common request parameters>

{
    "InstanceId": "rmq-72mo3a9o",
    "Topic": "test_topic",
    "Offset": 0,
    "Limit": 10
}

Output Example

{
    "Error": null,
    "RequestId": null,
    "Response": {
        "CreatedTime": 1683601674000,
        "InstanceId": "rmq-72mo3a9o",
        "LastUpdateTime": 1683601674000,
"Remark": "Test topic"
        "RequestId": "f7f7ba8a-4335-4adb-9186-680b91502c42",
        "SubscriptionCount": 0,
        "SubscriptionData": [],
        "Topic": "test_topic",
        "TopicType": "NORMAL"
    }
}

5. Developer Resources

SDK

TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.

Command Line Interface

Tencent Cloud CLI 3.0

6. Error Code

The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

Error Code	Description
ResourceNotFound.Instance	The instance does not exist.
ResourceNotFound.Topic	Topic does not exist. Please check and try again.

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