DescribeExecution - CloudFlow - Alibaba Cloud Documentation Center

Queries an execution in a flow. The long polling mode is supported. The maximum waiting period for long polling depends on the value of the WaitTimeSeconds parameter.

Debugging

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Debug

Authorization information

There is currently no authorization information disclosed in the API.

Request parameters

Parameter	Type	Required	Description	Example
FlowName	string	Yes	The name of the flow. The name is unique within the region and cannot be modified after the flow is created. Set this parameter based on the following rules: The name can contain letters, digits, underscores (_), and hyphens (-). The name must start with a letter or an underscore (_). The name is case-sensitive. The name must be 1 to 128 characters in length.	flow
ExecutionName	string	Yes	The name of the execution, which is unique within a flow. Set this parameter based on the following rules: The name can contain letters, digits, underscores (_), and hyphens (-). The name must start with a letter or an underscore (_). The name is case-sensitive. The name must be 1 to 128 characters in length.	exec
WaitTimeSeconds	integer	No	The maximum period of time for long polling waits. Valid values: 0 to 60. Unit: seconds. Configure this parameter based on the following rules: If the value is 0, the system immediately returns the current execution status. If the value is greater than 0, the long polling request waits until the execution ends or the specified period elapses.	20

Response parameters

Parameter	Type	Description	Example
	object	The response parameters.
Status	string	The execution status. Valid values: Starting Running Stopped Succeeded Failed TimedOut	Succeeded
StoppedTime	string	The time when the execution stopped.	2019-01-01T01:01:01.001Z
RequestId	string	The request ID.	testRequestId
StartedTime	string	The time when the execution started.	2019-01-01T01:01:01.001Z
FlowDefinition	string	The definition of the flow.	version: v1.0\ntype: flow\nname: test\nsteps:\n - type: pass\n name: mypass
Output	string	The execution result, which is in the JSON format.	{"key":"value"}
FlowName	string	The name of the flow.	flow
Name	string	The name of the execution.	exec
Input	string	The input of the execution, which is in the JSON format.	{"key":"value"}

Examples

Sample success responses

JSONformat

{
  "Status": "Succeeded",
  "StoppedTime": "2019-01-01T01:01:01.001Z",
  "RequestId": "testRequestId",
  "StartedTime": "2019-01-01T01:01:01.001Z",
  "FlowDefinition": "version: v1.0\\ntype: flow\\nname: test\\nsteps:\\n - type: pass\\n name: mypass",
  "Output": "{\"key\":\"value\"}",
  "FlowName": "flow",
  "Name": "exec",
  "Input": "{\"key\":\"value\"}"
}

Error codes

For a list of error codes, visit the Service error codes.

Change history

Change time

Summary of changes

Operation

2024-03-21

The Error code has changed. The request parameters of the API has changed

see changesets

Change item	Change content
Error Codes	The Error code has changed.
	delete Error Codes: 400
	delete Error Codes: 403
	delete Error Codes: 404
	delete Error Codes: 412
	delete Error Codes: 415
	delete Error Codes: 429
	delete Error Codes: 500
Input Parameters	The request parameters of the API has changed.
	delete Input Parameters: RequestId

HTTP status code	Error code	Error message	Description
400	InvalidArgument	Parameter error.	Parameter error.
400	MissingRequiredHeader	The HTTP header '%s' must be specified.	The HTTP header '%s' must be specified.
400	MissingRequiredParams	The HTTP query '%s' must be specified.	The HTTP query '%s' must be specified.
400	ActionNotSupported	The requested API operation '%s' is incorrect. Please check.	-
400	APIVersionNotSupported	The requested API version '%s' is not supported yet. Please check.	-
400	EntityTooLarge	The payload size exceeds maximum allowed size (%s bytes).	The payload size exceeds maximum allowed size (%s bytes).
403	InvalidAccessKeyID	The AccessKey ID %s is invalid.	The AccessKey ID %s is invalid.
403	RequestTimeTooSkewed	The difference between the request time %s and the current time %s is too large.	The difference between the request time %s and the current time %s is too large.
403	SignatureNotMatch	The request signature we calculated does not match the signature you provided. Check your access key and signing method.	The calculated signature of the request does not match the signature you provided. Check your AccessKey Secret and signing algorithm.
403	AccessDenied	The resources doesn't belong to you.	-
404	ExecutionNotExists	Execution %s for flow %s does not exist.	Execution %s for flow %s does not exist.
404	FlowNotExists	Flow %s does not exist.	Flow %s does not exist.
412	PreconditionFailed	The resource to be modified has been changed.	The resource to be modified has been changed. Please try again later.
415	UnsupportedMediaType	The content type must be "application/json".	The content type must be "application/json".
429	ResourceThrottled	The request is throttled. Please try again later.	The request is throttled. Please try again later.
500	InternalServerError	An internal error has occurred. Please retry.	An internal error has occurred. Please retry.