Queries the checkpoints of the shards from which data is consumed by a consumer group.

Request syntax

GET /logstores/logstoreName/consumergroups/consumerGroup? shard=shardId HTTP/1.1
Authorization: LOG yourAccessKeyId:yourSignature 
x-log-bodyrawsize: 0
x-log-apiversion: 0.6.0
Host: ProjectName.Endpoint
x-log-signaturemethod: hmac-sha1
Date: GMT Date
Content-Type: application/json
Connection: Keep-Alive

The value of the Host parameter consists of a project name and an endpoint. You must specify a project name for the Host parameter.

Request parameters

  • Request headers

    The GetCheckPoint does not have operation-specific request headers. For information about the common request headers of Log Service API operations, see Common request headers.

  • Parameters
    Parameter Type Required Example Description
    projectName String Yes my-project The name of the project.
    logstoreName String Yes my-logstore The name of the Logstore.
    consumerGroup String Yes consumer_group_test The name of the consumer group.
    shardId Integer No 0 The ID of the shard.
    • If the specified shard does not exist, an empty list is returned.
    • If the shard ID is not specified, the checkpoints of all shards are returned.

Response parameters

  • Response headers

    The GetCheckPoint operation does not have operation-specific response headers. For information about the common response headers of Log Service API operations, see Common response headers.

  • Response elements
    If the request succeeds, the HTTP status code 200 is returned. The response body contains the checkpoints of the shards from which data is consumed by the specified consumer group. The following table lists the parameters in the response body.
    Parameter Type Example Description
    shard Integer 0 The ID of the shard.
    checkpoint String MTUyNDE1NTM3OTM3MzkwODQ5Ng== The value of the checkpoint.
    updateTime Integer 1524224984800922 The time when the checkpoint was last updated. The timestamp follows the UNIX time format. It is the number of seconds that have elapsed since 00:00:00, January 1, 1970.
    consumer String consumer_1 The consumer.

Examples

  • Sample requests
    GET /logstores/my-logstore/consumergroups/consumer_group_test? shard=0
    Header:
    {
    Authorization: LOG yourAccessKeyId:yourSignature
    x-log-bodyrawsize: 0
    User-Agent: sls-java-sdk-v-0.6.1
    x-log-apiversion: 0.6.0
    Host: my-project.cn-shanghai.log.aliyuncs.com
    x-log-signaturemethod: hmac-sha1
    Date: Fri, 04 May 2018 09:26:53 GMT
    Content-Type: application/x-protobuf
    Connection: Keep-Alive
    }
  • Sample success responses
    HTTP/1.1 200 OK
    Header:
    {
    Server: nginx/1.12.1
    Content-Type: application/json
    Content-Length: 111
    Connection: close
    Access-Control-Allow-Origin: *
    Date: Fri, 04 May 2018 09:26:53 GMT
    x-log-requestid: 5AEC275D1FFC036AB254B20C
    }
    Body:
    {
    [
      {
        "shard": 0,
        "checkpoint": "MTUyNDE1NTM3OTM3MzkwODQ5Ng==",
        "updateTime": 1524224984800922,
        "consumer": "consumer_1"
      }
    ]
    }

Error codes

HTTP status code Error code Error message Description
404 ProjectNotExist The Project does not exist : projectName. The error message returned because the specified project does not exist.
404 LogStoreNotExist Logstore logstoreName dose not exist. The error message returned because the specified Logstore does not exist.
404 ConsumerGroupNotExist Consumer group not exist. The error message returned because the specified consumer group does not exist.
500 InternalServerError Specified Server Error Message. The error message returned because an internal server error has occurred.

For more information about the error codes, see Common error codes.