Help Center/ Application Operations Management/ API Reference/ APIs/ Prometheus Monitoring/ (Recommended) Querying Expression Calculation Results in a Specified Period Using the POST Method
Updated on 2024-06-28 GMT+08:00

(Recommended) Querying Expression Calculation Results in a Specified Period Using the POST Method

Function

This API is used to query the calculation results of a PromQL expression in a specified period using the POST method.

Calling Method

For details, see Calling APIs.

URI

POST /v1/{project_id}/aom/api/v1/query_range

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

Project ID obtained from IAM. Generally, a project ID contains 32 characters.

Table 2 Query Parameters

Parameter

Mandatory

Type

Description

query

Yes

String

PromQL expression. For details, see https://prometheus.io/docs/prometheus/latest/querying/basics/.

start

Yes

String

Start timestamp (Unix timestamp, in seconds).

end

Yes

String

End timestamp (Unix timestamp, in seconds).

step

Yes

String

Query step (in seconds). The task is executed on the step basis within the specified period.

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

Object

Response data.

Status code: 400

Table 5 Response body parameters

Parameter

Type

Description

status

String

Response status.

errorType

String

Error type.

error

String

Error message.

Status code: 403

Table 6 Response body parameters

Parameter

Type

Description

status

String

Response status.

errorType

String

Error type.

error

String

Error message.

Status code: 422

Table 7 Response body parameters

Parameter

Type

Description

status

String

Response status.

errorType

String

Error type.

error

String

Error message.

Status code: 503

Table 8 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 on the step basis in a specified period.

https://{EndPoint}/v1/{project_id}/aom/api/v1/query_range?query=topk(2,aom_node_status)&start=1630386780&end=1630390380&step=15

Example Responses

Status code: 200

OK: The request is successful.

{
  "status" : "success",
  "data" : {
    "resultType" : "matrix",
    "result" : [ {
      "metric" : {
        "__name__" : "amm_node_status",
        "clusterId" : "000000-0000-0000-0000-0000000",
        "hostID" : "c9xxcb-2x6c-4h54-8fcd-f68xx85",
        "nameSpace" : "default",
        "nodeIP" : "1xx.1xx.0.1xx",
        "nodeName" : "sis-xxn-amm"
      },
      "values" : [ [ 1630386780, "0" ], [ 1630388610, "0" ], [ 1630388625, "0" ] ]
    }, {
      "metric" : {
        "__name__" : "amm_node_status",
        "clusterId" : "00000000-0000-0000-0000-00000000",
        "hostID" : "ec5xxxb-0xx8-4xxx-bxx-9ecxxf",
        "nameSpace" : "default",
        "nodeIP" : "1xx.168.0.1x",
        "nodeName" : "fdx-ibxxst"
      },
      "values" : [ [ 1630388265, "0" ], [ 1630388280, "0" ], [ 1630388295, "0" ] ]
    } ]
  }
}

Status code: 400

Bad Request: The request is invalid. The client should not repeat the request without modifications.

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

Status code: 403

Forbidden: The request is rejected. The server has received the request and understood it, but the server refuses to respond to it. The client should not repeat the request without modifications.

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

Status code: 422

Unprocessable: The expression cannot be executed.

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

Status code: 503

Service Unavailable: 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."
}

SDK Sample Code

The SDK sample code is as follows.

Java

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
package com.huaweicloud.sdk.test;

import com.huaweicloud.sdk.core.auth.ICredential;
import com.huaweicloud.sdk.core.auth.BasicCredentials;
import com.huaweicloud.sdk.core.exception.ConnectionException;
import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
import com.huaweicloud.sdk.core.exception.ServiceResponseException;
import com.huaweicloud.sdk.aom.v2.region.AomRegion;
import com.huaweicloud.sdk.aom.v2.*;
import com.huaweicloud.sdk.aom.v2.model.*;


public class ListRangeQueryAomPromPostSolution {

    public static void main(String[] args) {
        // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
        // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
        String ak = System.getenv("CLOUD_SDK_AK");
        String sk = System.getenv("CLOUD_SDK_SK");

        ICredential auth = new BasicCredentials()
                .withAk(ak)
                .withSk(sk);

        AomClient client = AomClient.newBuilder()
                .withCredential(auth)
                .withRegion(AomRegion.valueOf("<YOUR REGION>"))
                .build();
        ListRangeQueryAomPromPostRequest request = new ListRangeQueryAomPromPostRequest();
        request.withQuery("<query>");
        request.withStart("<start>");
        request.withEnd("<end>");
        request.withStep("<step>");
        try {
            ListRangeQueryAomPromPostResponse response = client.listRangeQueryAomPromPost(request);
            System.out.println(response.toString());
        } catch (ConnectionException e) {
            e.printStackTrace();
        } catch (RequestTimeoutException e) {
            e.printStackTrace();
        } catch (ServiceResponseException e) {
            e.printStackTrace();
            System.out.println(e.getHttpStatusCode());
            System.out.println(e.getRequestId());
            System.out.println(e.getErrorCode());
            System.out.println(e.getErrorMsg());
        }
    }
}

Python

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
# coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkaom.v2.region.aom_region import AomRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkaom.v2 import *

if __name__ == "__main__":
    # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak = os.environ["CLOUD_SDK_AK"]
    sk = os.environ["CLOUD_SDK_SK"]

    credentials = BasicCredentials(ak, sk)

    client = AomClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(AomRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = ListRangeQueryAomPromPostRequest()
        request.query = "<query>"
        request.start = "<start>"
        request.end = "<end>"
        request.step = "<step>"
        response = client.list_range_query_aom_prom_post(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

Go

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    aom "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/aom/v2"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/aom/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/aom/v2/region"
)

func main() {
    // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak := os.Getenv("CLOUD_SDK_AK")
    sk := os.Getenv("CLOUD_SDK_SK")

    auth := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        Build()

    client := aom.NewAomClient(
        aom.AomClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.ListRangeQueryAomPromPostRequest{}
	request.Query = "<query>"
	request.Start = "<start>"
	request.End = "<end>"
	request.Step = "<step>"
	response, err := client.ListRangeQueryAomPromPost(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

More

For SDK sample code of more programming languages, see the Sample Code tab in API Explorer. SDK sample code can be automatically generated.

Status Codes

Status Code

Description

200

OK: The request is successful.

400

Bad Request: The request is invalid. The client should not repeat the request without modifications.

403

Forbidden: The request is rejected. The server has received the request and understood it, but the server refuses to respond to it. The client should not repeat the request without modifications.

422

Unprocessable: The expression cannot be executed.

503

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

Error Codes

See Error Codes.