Querying the Calculation Result of a PromQL Expression at a Specified Time Point Based on Prometheus Instance

Function

This API is used to query the calculation result of a PromQL expression at a specified time point.

URI

POST /v1/{project_id}/{prometheus_instance}/aom/api/v1/query

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID obtained from IAM. Generally, a project ID contains 32 characters.
prometheus_instance	Yes	String	Prometheus instance ID.

**Table 2** Query Parameters
Parameter	Mandatory	Type	Description
query	Yes	String	PromQL expression. For details, see https://prometheus.io/docs/prometheus/latest/querying/basics/.
time	No	String	Timestamp specified for PromQL calculation (Unix, in seconds).

Request Parameters

**Table 3** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	User token obtained from IAM.

Response Parameters

Status code: 200

**Table 4** Response body parameters
Parameter	Type	Description
status	String	Response status.
data	Data object	Response data.

**Table 5** Data
Parameter	Type	Description
resultType	String	Type of the returned value.
result	Array of objects	Data information.

Status code: 400

**Table 6** Response body parameters
Parameter	Type	Description
status	String	Response status.
errorType	String	Error type.
error	String	Error message.

Status code: 403

**Table 7** Response body parameters
Parameter	Type	Description
status	String	Response status.
errorType	String	Error type.
error	String	Error message.

Status code: 422

**Table 8** Response body parameters
Parameter	Type	Description
status	String	Response status.
errorType	String	Error type.
error	String	Error message.

Status code: 503

**Table 9** Response body parameters
Parameter	Type	Description
status	String	Response status.
errorType	String	Error type.
error	String	Error message.

Example Requests

Query the top N aom_node_status metrics at time point "1630381536".

https://{EndPoint}/v1/{project_id}/aom/api/v1/query?query=topk(2,aom_node_status)&time=1630381536

Example Responses

Status code: 200

The request is successful.

{
  "status" : "success",
  "data" : {
    "resultType" : "vector",
    "result" : [ {
      "metric" : {
        "__name__" : "amm_node_status",
        "clusterId" : "00000000-0000-0000-0000-00000000",
        "hostID" : "g947xcxh-2xcxc-xxx-xxcd-f6xxx85",
        "nameSpace" : "default",
        "nodeIP" : "1x6.1xx.0.xxx",
        "nodeName" : "sdxx-jxxxgksi-axx"
      },
      "value" : [ 16303810036, "0" ]
    }, {
      "metric" : {
        "__name__" : "amm_node_status",
        "clusterId" : "00000000-0000-0000-0000-00000000",
        "hostID" : "dc1xxxf7e-b095-4e77-bxx-914dhlxxxbf7",
        "nameSpace" : "default",
        "nodeIP" : "1xx.1xx.0.xxx",
        "nodeName" : "sds-jixxxsi-texxt"
      },
      "value" : [ 1630381536, "0" ]
    } ]
  }
}

Status code: 400

Invalid request. Parameters are incorrect or missing. The client should not repeat the request without modifications.

{
  "status" : "error",
  "errorType" : "bad_param",
  "error" : "param is invalid."
}

Status code: 403

Access denied.

{
  "status" : "error",
  "errorType" : "auth",
  "error" : "auth project_id not pass."
}

Status code: 422

The expression cannot be executed.

{
  "status" : "error",
  "errorType" : "excution",
  "error" : "expression can't be executed."
}

Status code: 503

The requested service is invalid. The client should not repeat the request without modifications.

{
  "status" : "error",
  "errorType" : "timeout",
  "error" : "query timed out in query execution."
}

Status Codes

Status Code	Description
200	The request is successful.
400	Invalid request. Parameters are incorrect or missing. The client should not repeat the request without modifications.
403	Access denied.
422	The expression cannot be executed.
503	The requested service is invalid. The client should not repeat the request without modifications.