Querying the Consumer Group List or Details

Function

This API is used to query the consumer group list or details.

URI

GET /v2/{project_id}/instances/{instance_id}/groups/{group}/topics

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID. For details about how to obtain it, see Obtaining a Project ID.
instance_id	Yes	String	Instance ID.
group	Yes	String	Consumer group name.

**Table 2** Query Parameters
Parameter	Mandatory	Type	Description
topic	No	String	Topic to be queried. If this parameter is not specified, the entire topic list is queried. If this parameter is specified, details of the topic are queried.
limit	No	Integer	Maximum number of records returned in the current query. The default value is 10. The value ranges from 1 to 50. Minimum: 1 Maximum: 50 Default: 10
offset	No	Integer	Offset, which is the position where the query starts. The value must be greater than or equal to 0. Minimum: 0 Default: 0

Request Parameters

None

Response Parameters

Status code: 200

**Table 3** Response body parameters
Parameter	Type	Description
topics	Array of strings	Topic list. This parameter is displayed only when you query the topic consumption list.
total	Integer	Total number of topics. This parameter is displayed only when you query the topic consumption list.
brokers	Array of Brokers objects	Associated brokers of topics. This parameter is displayed only when you query the topic consumption list.

**Table 4** Brokers
Parameter	Type	Description
broker_name	String	Names of the associated brokers.
queues	Array of Queue objects	Queue details of the associated brokers.

**Table 5** Queue
Parameter	Type	Description
id	Integer	Queue ID.
lag	Long	Total number of accumulated messages in the queue.
broker_offset	Long	Total number of messages in the queue.
consumer_offset	Long	Number of retrieved messages.
last_message_time	Long	Time (UNIX, in millisecond) when the latest consumed message was stored.

Example Requests

Querying the topic list of a consumer group

GET https://{endpoint}/v2/{project_id}/instances/{instance_id}/groups/{group}/topics

Querying consumption details of a specified topic in a consumer group

GET https://{endpoint}/v2/{project_id}/instances/{instance_id}/groups/{group}/topics?topic=test0001

Example Responses

Status code: 200

Consumer group list or details queried successfully.

# Example response: The **topics** and **total** parameters are displayed when you query the topic list of a consumer group, and the **brokers** parameter is displayed when you query details.
{
  ""topics"": [
    ""test0001""
  ],
  ""total"": 1,
  ""brokers"": [
    {
      ""queues"": [
        {
          ""id"": 0,
          ""lag"": 0,
          ""broker_offset"": 0,
          ""consumer_offset"": 0,
          ""last_message_time"": 0
        },
        {
          ""id"": 1,
          ""lag"": 0,
          ""broker_offset"": 1,
          ""consumer_offset"": 1,
          ""last_message_time"": 1679398537088
        },
        {
          ""id"": 2,
          ""lag"": 0,
          ""broker_offset"": 0,
          ""consumer_offset"": 0,
          ""last_message_time"": 0
        }
      ],
      ""broker_name"": ""broker-0""
    }
  ]
}