Updated on 2025-06-20 GMT+08:00

Querying a Background Task List of an Instance

Function

This API is used to query a background task list of an instance.

Calling Method

For details, see Calling APIs.

URI

GET /v2/{project_id}/instances/{instance_id}/tasks

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

Definition:

Project ID. For details, see Obtaining a Project ID.

Constraints:

N/A

Range:

N/A

Default Value:

N/A

instance_id

Yes

String

Definition:

Instance ID. To obtain it, log in to the RocketMQ console and find the instance ID on the RocketMQ instance details page.

Constraints:

N/A

Range:

N/A

Default Value:

N/A

Table 2 Query Parameters

Parameter

Mandatory

Type

Description

start

No

Integer

Definition:

ID of the task where the query starts.

Constraints:

N/A

Range:

≥ 0

Default Value:

N/A

limit

No

Integer

Definition:

Number of records to query.

Constraints:

N/A

Range:

N/A

Default Value:

N/A

begin_time

No

String

Definition:

Time of a task where the query starts. The format is YYYYMMDDHHmmss.

Constraints:

N/A

Range:

≥ 0

Default Value:

N/A

end_time

No

String

Definition:

Time of a task where the query ends. The format is YYYYMMDDHHmmss.

Constraints:

N/A

Range:

N/A

Default Value:

N/A

Request Parameters

None

Response Parameters

Status code: 200

Table 3 Response body parameters

Parameter

Type

Description

task_count

String

Definition:

Number of tasks.

Range:

N/A

tasks

Array of tasks objects

Definition:

Task list.

Table 4 tasks

Parameter

Type

Description

id

String

Definition:

Task ID.

Range:

N/A

name

String

Definition:

Task name.

Range:

N/A

user_name

String

Definition:

Username.

Range:

N/A

user_id

String

Definition:

User ID.

Range:

N/A

params

String

Definition:

Task parameters.

Range:

N/A

status

String

Definition:

Task status.

Range:

N/A

created_at

String

Definition:

Start time.

Range:

N/A

updated_at

String

Definition:

End time.

Range:

N/A

Example Requests

'GET https://{endpoint}/v2/{project_id}/instances/{instance_id}/tasks?start={start}&limit={limit}&begin_time={begin_time}&end_time={end_time}'

Example Responses

Status code: 200

Successful

{
  "task_count" : "1",
  "tasks" : [ {
    "id" : "ff80808272dcc90f0172df1e490f41b0",
    "name" : "bindInstancePublicIp",
    "user_name" : "dms_test",
    "user_id" : "xxxxxxxx93ff484a828144c6xxxxxxxx",
    "params" : "{\"public_ip_id\":\"06a13350-4305-4338-9f0e-6b322bb1413d\",\"public_ip_address\":\"xx.xx.xx.xx\",\"enable_public_ip\":true}",
    "status" : "SUCCESS",
    "created_at" : "2020-06-23T03:00:03.471Z",
    "updated_at" : "2020-06-23T03:00:08.130Z"
  } ]
}

SDK Sample Code

The SDK sample code is as follows.

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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.rocketmq.v2.region.RocketMQRegion;
import com.huaweicloud.sdk.rocketmq.v2.*;
import com.huaweicloud.sdk.rocketmq.v2.model.*;


public class ListBackgroundTasksSolution {

    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");
        String projectId = "{project_id}";

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

        RocketMQClient client = RocketMQClient.newBuilder()
                .withCredential(auth)
                .withRegion(RocketMQRegion.valueOf("<YOUR REGION>"))
                .build();
        ListBackgroundTasksRequest request = new ListBackgroundTasksRequest();
        request.withInstanceId("{instance_id}");
        try {
            ListBackgroundTasksResponse response = client.listBackgroundTasks(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());
        }
    }
}
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# coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkrocketmq.v2.region.rocketmq_region import RocketMQRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkrocketmq.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"]
    projectId = "{project_id}"

    credentials = BasicCredentials(ak, sk, projectId)

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

    try:
        request = ListBackgroundTasksRequest()
        request.instance_id = "{instance_id}"
        response = client.list_background_tasks(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)
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package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    rocketmq "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/rocketmq/v2"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/rocketmq/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/rocketmq/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")
    projectId := "{project_id}"

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

    client := rocketmq.NewRocketMQClient(
        rocketmq.RocketMQClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.ListBackgroundTasksRequest{}
	request.InstanceId = "{instance_id}"
	response, err := client.ListBackgroundTasks(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

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

Successful

Error Codes

See Error Codes.