Querying a Flow Instance
Function
This API is used to query an instance of a flow.
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
GET /v2/{project_id}/fgs/workflows/{workflow_id}/executions/{execution_id}
| Parameter | Mandatory | Type | Description |
|---|---|---|---|
| project_id | Yes | String | Definition Project ID. For details, see Obtaining a Project ID. Constraints N/A. Range The value contains 32 characters. Only letters and digits are allowed. Default Value N/A. |
| workflow_id | Yes | String | Definition Flow ID. Constraints N/A. Range 1 to 512 characters Default Value N/A. |
| execution_id | Yes | String | Flow instance ID. |
Request Parameters
| Parameter | Mandatory | Type | Description |
|---|---|---|---|
| X-Get-Workflow-Full-History-Data | No | Boolean | Whether to obtain the complete flow execution output. |
Response Parameters
Status code: 200
| Parameter | Type | Description |
|---|---|---|
| workflow_id | String | Flow ID. |
| workflow_urn | String | Definition Flow URN. The format is as follows: urn:fss:<region_id>:<project_id>:workflow:<package>:<workflow_name>:<version> Notes: Currently, only default is supported for package. Currently, only latest is supported for version. Range N/A. |
| execution_id | String | Flow instance ID. |
| status | String | Definition Process instance status. Range |
| headers | Object | Headers for function execution. |
| input | Object | Input parameters for function execution. |
| output | Object | Function execution result. |
| begin_time | String | Flow instance creation time (UTC), in the format yyyy-MM-ddTHH:mm:ssZ. |
| end_time | String | Flow instance end time (UTC), in the format yyyy-MM-ddTHH:mm:ssZ. |
| last_update_time | String | Flow instance last update time (UTC), in the format yyyy-MM-ddTHH:mm:ssZ. |
| created_by | String | Flow instance creator. |
| node_execution_details | Array of NodeExecutionDetail objects | Node execution information. |
| Parameter | Type | Description |
|---|---|---|
| node_id | String | Flow node ID. |
| node_name | String | Flow node name. |
| execution_id | String | Flow node execution record ID. |
| executions | Array of NodeExecution objects | Node execution records. |
| Parameter | Type | Description |
|---|---|---|
| status | String | Definition Process instance status. Range |
| input | Object | Input parameters for function execution. |
| output | Object | Function execution result. |
| begin_time | Long | Node start time (UTC), precise to milliseconds. |
| end_time | Long | Node end time (UTC), precise to milliseconds. |
| error_message | Object | Error message. This parameter has a value only when the node execution fails. |
| request_id | String | Flow node request ID. |
Status code: 400
| Parameter | Type | Description |
|---|---|---|
| error_code | String | Error code. |
| error_msg | String | Error description. |
| request_id | String | Request ID. |
Status code: 404
| Parameter | Type | Description |
|---|---|---|
| error_code | String | Error code. |
| error_msg | String | Error description. |
Status code: 500
| Parameter | Type | Description |
|---|---|---|
| error_code | String | Error code. |
| error_msg | String | Error description. |
| request_id | String | Request ID. |
Example Requests
Query details about instance {execution_id} of function flow {workflow_id}.
GET /v2/{project_id}/fgs/workflows/{workflow_id}/executions/{execution_id} Example Responses
Status code: 200
{
"workflow_id" : "48aff955-ea10-4ffd-b426-190bc192dc14",
"workflow_urn" : "urn:fss:cn-north-7:73d69ae0cfcf460190522d060f05ad:workflow:default:testflow:latest",
"execution_id" : "48aff955-ea10-4ffd-b426-190bc192dc14",
"status" : "running",
"headers" : {
"tenantId" : "user1"
},
"input" : {
"arg1" : "argument_1",
"arg2" : "argument_2"
},
"output" : {
"arg1" : "argument_1",
"arg2" : "argument_2"
},
"begin_time" : "2021-01-01T00:00:00Z",
"end_time" : "2021-01-01T00:00:00Z",
"last_update_time" : "2021-01-01T00:00:00Z",
"created_by" : "admin",
"node_execution_details" : [ {
"node_id" : "48aff955-ea10-4ffd-b426-190bc192dc14",
"node_name" : "string",
"execution_id" : "string",
"executions" : [ {
"status" : "running",
"input" : {
"arg1" : "argument_1",
"arg2" : "argument_2"
},
"output" : {
"arg1" : "argument_1",
"arg2" : "argument_2"
},
"begin_time" : 1605119892050,
"end_time" : 1605119892050,
"error_message" : {
"detail" : "Execution failed"
},
"request_id" : "string"
} ]
} ]
} 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.functiongraph.v2.region.FunctionGraphRegion; import com.huaweicloud.sdk.functiongraph.v2.*; import com.huaweicloud.sdk.functiongraph.v2.model.*; public class ShowWorkflowExecutionSolution { 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(); ShowWorkflowExecutionRequest request = new ShowWorkflowExecutionRequest(); request.withWorkflowId("{workflow_id}"); request.withExecutionId("{execution_id}"); try { ShowWorkflowExecutionResponse response = client.showWorkflowExecution(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 | # 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 = ShowWorkflowExecutionRequest() request.workflow_id = "{workflow_id}" request.execution_id = "{execution_id}" response = client.show_workflow_execution(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 40 41 42 43 44 45 46 47 48 49 50 51 | 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.ShowWorkflowExecutionRequest{} request.WorkflowId = "{workflow_id}" request.ExecutionId = "{execution_id}" response, err := client.ShowWorkflowExecution(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 | Bad Request |
| 404 | Bad Request |
| 500 | Internal Server Error |
Error Codes
See Error Codes.
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