Executing a Function Asynchronously
Function
This API is used to execute a function asynchronously.
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}/invocations-async
| Parameter | Mandatory | Type | Description |
|---|---|---|---|
| project_id | Yes | String | Parameter description: Project ID. For details, see Obtaining a Project ID. Constraints N/A Value range: 32 characters, including letters and digits. Default value: N/A |
| function_urn | Yes | String | Parameter description: URN of the function. For details, see Function Model. Constraints N/A Value range: Only letters, digits, underscores (_), hyphens (-), and colons (:) are allowed. Default value: N/A |
Request 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 N/A Value range: N/A Default value: N/A |
| Content-Type | Yes | String | Parameter description: The request body type or format. Constraints N/A Value range: N/A Default value: N/A |
| Parameter | Mandatory | Type | Description |
|---|---|---|---|
| {User defined key} | Yes | Object | Definition Function execution request body, in JSON format. Constraints N/A |
Response Parameters
Status code: 202
| Parameter | Type | Description |
|---|---|---|
| request_id | String | Definition Request ID. Range The value can contain only letters, digits, and hyphens (-), and contains 36 characters. |
Status code: 400
| Parameter | Type | Description |
|---|---|---|
| error_code | String | Error code. |
| error_msg | String | Error message. |
Status code: 401
| Parameter | Type | Description |
|---|---|---|
| error_code | String | Error code. |
| error_msg | String | Error message. |
Status code: 403
| Parameter | Type | Description |
|---|---|---|
| error_code | String | Error code. |
| error_msg | String | Error message. |
Status code: 404
| Parameter | Type | Description |
|---|---|---|
| error_code | String | Error code. |
| error_msg | String | Error message. |
Status code: 500
| Parameter | Type | Description |
|---|---|---|
| error_code | String | Error code. |
| error_msg | String | Error message. |
Status code: 503
| Parameter | Type | Description |
|---|---|---|
| error_code | String | Error code. |
| error_msg | String | Error message. |
Example Requests
This API is used to execute a function asynchronously.
POST /v2/{project_id}/fgs/functions/{function_urn}/invocations-async
{
"body" : "",
"requestContext" : {
"apiId" : "bc1dcffd-xx",
"requestId" : "xxx",
"stage" : "RELEASE"
},
"queryStringParameters" : {
"responseType" : "html"
},
"httpMethod" : "GET",
"pathParameters" : null,
"headers" : {
"accept-language" : "zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2",
"accept-encoding" : "gzip, deflate, br",
"x-forwarded-port" : "443",
"x-forwarded-for" : "127.0.0.1",
"x-forwarded-proto" : "https"
},
"path" : "/apig-event-template",
"isBase64Encoded" : true
} Example Responses
Status code: 202
{
"request_id" : "1167bf8c-87b0-43ab-8f5f-26b16c64f252"
} SDK Sample Code
The SDK sample code is as follows.
Java
This API is used to execute a function asynchronously.
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 50 51 52 53 54 55 56 57 58 59 | 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.*; import java.util.Map; import java.util.HashMap; public class AsyncInvokeFunctionSolution { 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(); AsyncInvokeFunctionRequest request = new AsyncInvokeFunctionRequest(); request.withFunctionUrn("{function_urn}"); Map<String, Object> listbodyAsyncInvokeFunctionRequestBody = new HashMap<>(); listbodyAsyncInvokeFunctionRequestBody.put("body", ""); listbodyAsyncInvokeFunctionRequestBody.put("requestContext", "{\"stage\":\"RELEASE\",\"requestId\":\"xxx\",\"apiId\":\"bc1dcffd-xx\"}"); listbodyAsyncInvokeFunctionRequestBody.put("queryStringParameters", "{\"responseType\":\"html\"}"); listbodyAsyncInvokeFunctionRequestBody.put("httpMethod", "GET"); listbodyAsyncInvokeFunctionRequestBody.put("headers", "{\"accept-language\":\"zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2\",\"x-forwarded-proto\":\"https\",\"x-forwarded-port\":\"443\",\"x-forwarded-for\":\"127.0.0.1\",\"accept-encoding\":\"gzip, deflate, br\"}"); listbodyAsyncInvokeFunctionRequestBody.put("path", "/apig-event-template"); listbodyAsyncInvokeFunctionRequestBody.put("isBase64Encoded", "true"); request.withBody(listbodyAsyncInvokeFunctionRequestBody); try { AsyncInvokeFunctionResponse response = client.asyncInvokeFunction(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
This API is used to execute a function asynchronously.
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 | # 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 = AsyncInvokeFunctionRequest() request.function_urn = "{function_urn}" listAsyncInvokeFunctionRequestBodybody = { "body": "", "requestContext": "{\"stage\":\"RELEASE\",\"requestId\":\"xxx\",\"apiId\":\"bc1dcffd-xx\"}", "queryStringParameters": "{\"responseType\":\"html\"}", "httpMethod": "GET", "headers": "{\"accept-language\":\"zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2\",\"x-forwarded-proto\":\"https\",\"x-forwarded-port\":\"443\",\"x-forwarded-for\":\"127.0.0.1\",\"accept-encoding\":\"gzip, deflate, br\"}", "path": "/apig-event-template", "isBase64Encoded": "true" } request.body = listAsyncInvokeFunctionRequestBodybody response = client.async_invoke_function(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
This API is used to execute a function asynchronously.
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 50 51 52 53 54 55 56 57 58 59 60 | 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.AsyncInvokeFunctionRequest{} request.FunctionUrn = "{function_urn}" var listAsyncInvokeFunctionRequestBodybody = map[string]interface{}{ "body": "", "requestContext": "{\"stage\":\"RELEASE\",\"requestId\":\"xxx\",\"apiId\":\"bc1dcffd-xx\"}", "queryStringParameters": "{\"responseType\":\"html\"}", "httpMethod": "GET", "headers": "{\"accept-language\":\"zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2\",\"x-forwarded-proto\":\"https\",\"x-forwarded-port\":\"443\",\"x-forwarded-for\":\"127.0.0.1\",\"accept-encoding\":\"gzip, deflate, br\"}", "path": "/apig-event-template", "isBase64Encoded": "true", } request.Body = listAsyncInvokeFunctionRequestBodybody response, err := client.AsyncInvokeFunction(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 |
|---|---|
| 202 | Definition If the following message is displayed, the script is successfully executed. Range N/A |
| 400 | Bad request. |
| 401 | Unauthorized. |
| 403 | Forbidden. |
| 404 | Not found. |
| 500 | Internal server error. |
| 503 | Service unavailable. |
Error Codes
See Error Codes.
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