Help Center/ FunctionGraph/ API Reference/ APIs/ Asynchronous Execution Notification/ Stopping an Asynchronous Invocation Request
Updated on 2026-10-27 GMT+08:00

Stopping an Asynchronous Invocation Request

Function

This API is used to stop asynchronous invocation of a function with N concurrent instances. When calling this API, set recursive to false and force to true. The API will also stop the function's other concurrent requests and return "4208 function invocation canceled".

Calling Method

For details, see Calling APIs.

Authorization Information

Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions. For details about the required permissions, see Permissions Policies and Supported Actions.

URI

POST /v2/{project_id}/fgs/functions/{function_urn}/cancel

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

Parameter description:

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

Constraints:

None

Value range:

32 characters, including letters and digits.

Default value:

None

function_urn

Yes

String

Parameter description:

URN of the function. For details, see Function Model.

Constraints:

None

Value range:

Only letters, digits, underscores (_), hyphens (-), and colons (:) are allowed.

Default value:

None

Request Parameters

Table 2 Request header parameters

Parameter

Mandatory

Type

Description

X-Auth-Token

Yes

String

Parameter description:

User token.

The token can be obtained by calling the IAM API. The value of X-Subject-Token in the response header is the user token.

Constraints:

None

Value range:

None

Default value:

None

Content-Type

Yes

String

Parameter description:

Specifies the type (or format) of the message body.

Constraints:

None

Value range:

Only application/json is supported.

Default value:

application/json

Table 3 Request body parameters

Parameter

Mandatory

Type

Description

request_id

Yes

String

ID of a stopped request.

type

No

String

Stop mode.

Options: recursive and force.

recursive: The subfunction that is being invoked will be stopped.

force: Terminate the runtime directly.

Response Parameters

Status code: 200

None

Status code: 400

Table 4 Response body parameters

Parameter

Type

Description

error_code

String

Error code.

error_msg

String

Error message.

Status code: 403

Table 5 Response body parameters

Parameter

Type

Description

error_code

String

Error code.

error_msg

String

Error message.

Status code: 404

Table 6 Response body parameters

Parameter

Type

Description

error_code

String

Error code.

error_msg

String

Error message.

Status code: 500

Table 7 Response body parameters

Parameter

Type

Description

error_code

String

Error code.

error_msg

String

Error message.

Example Requests

Stop an asynchronous invocation request of a function.

POST /v2/{project_id}/fgs/functions/{function_urn}/cancel

{
  "request_id" : "xxxx"
}

Example Responses

Status code: 200

null

Status code: 400

{
  "error_code" : "FSS.0400",
  "error_msg" : "Invalid RequestId"
}

Status code: 403

{
  "error_code" : "FSS.0403",
  "error_msg" : "invalid token"
}

Status code: 404

{
  "error_code" : "FSS.0404",
  "error_msg" : "can not find function"
}

Status code: 500

{
  "error_code" : "FSS.0500",
  "error_msg" : "xxx"
}

SDK Sample Code

The SDK sample code is as follows.

Java

Stop an asynchronous invocation request of a function.

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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.functiongraph.v2.region.FunctionGraphRegion;
import com.huaweicloud.sdk.functiongraph.v2.*;
import com.huaweicloud.sdk.functiongraph.v2.model.*;


public class CancelAsyncInvocationSolution {

    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);

        FunctionGraphClient client = FunctionGraphClient.newBuilder()
                .withCredential(auth)
                .withRegion(FunctionGraphRegion.valueOf("<YOUR REGION>"))
                .build();
        CancelAsyncInvocationRequest request = new CancelAsyncInvocationRequest();
        request.withFunctionUrn("{function_urn}");
        CancelAsyncInvocationRequestBody body = new CancelAsyncInvocationRequestBody();
        body.withRequestId("xxxx");
        request.withBody(body);
        try {
            CancelAsyncInvocationResponse response = client.cancelAsyncInvocation(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

Stop an asynchronous invocation request of a function.

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# coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkfunctiongraph.v2.region.functiongraph_region import FunctionGraphRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkfunctiongraph.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 = FunctionGraphClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(FunctionGraphRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = CancelAsyncInvocationRequest()
        request.function_urn = "{function_urn}"
        request.body = CancelAsyncInvocationRequestBody(
            request_id="xxxx"
        )
        response = client.cancel_async_invocation(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

Stop an asynchronous invocation request of a function.

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package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    functiongraph "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/functiongraph/v2"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/functiongraph/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/functiongraph/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, err := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        SafeBuild()

    if err != nil {
        fmt.Println(err)
        return
    }

    hcClient, err := functiongraph.FunctionGraphClientBuilder().
         WithRegion(region.ValueOf("<YOUR REGION>")).
         WithCredential(auth).
         SafeBuild()


    if err != nil {
        fmt.Println(err)
        return
    }

    client := functiongraph.NewFunctionGraphClient(hcClient)

    request := &model.CancelAsyncInvocationRequest{}
	request.FunctionUrn = "{function_urn}"
	request.Body = &model.CancelAsyncInvocationRequestBody{
		RequestId: "xxxx",
	}
	response, err := client.CancelAsyncInvocation(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

400

Invalid RequestId

403

FORBIDDEN

404

Not Found

500

Internal error.

Error Codes

See Error Codes.