DescribeExecution - CloudFlow - Alibaba Cloud Documentation Center

Queries the status of an execution. This operation supports long polling. The WaitTimeSeconds parameter specifies the maximum wait time.

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Test

RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.
API: The API that you can call to perform the action.
Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.
Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.
- For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.
- For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.
Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.
Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

fnf:DescribeExecution

get

*All Resource

*

None

Request parameters

Parameter	Type	Required	Description	Example
FlowName	string	Yes	The name of the flow.	my_flow_name
ExecutionName	string	Yes	The name of the execution.	my_exec_name
WaitTimeSeconds	integer	No	The maximum wait time for a long polling request, in seconds. Valid values: 0 to 60. 0: The request immediately returns the current status of the execution. A value greater than 0: The request waits on the server for the execution to complete. The maximum wait time is the value that you specify.	20

Response elements

Element	Type	Description	Example
	object	The returned data.
Status	string	The status of the execution. 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 executed flow.	旧版： "type: flow\nversion: v1\nname: my_flow_name\nsteps:\n - type: pass\n name: mypass" 新版： "Type: StateMachine\nSpecVersion: v1\nName: my_flow_name\nStartAt: my_state\nStates:\n - Type: Pass\n Name: my_state\n End: true"
Output	string	The output of the execution, in JSON format.	{"key":"value"}
FlowName	string	The name of the flow.	my_flow_name
Name	string	The name of the execution.	my_exec_name
Input	string	The input of the execution, in JSON format.	{"key":"value"}
Environment	object	The list of environment variables used during the flow execution.
Variables	array<object>	The list of environment variables used during the flow execution.
	object	The list of variables that can be accessed during the flow execution.
Name	string	The name of the variable.	key
Value	string	The value of the variable.	value

Examples

Success response

JSON format

{
  "Status": "Succeeded",
  "StoppedTime": "2019-01-01T01:01:01.001Z",
  "RequestId": "testRequestId",
  "StartedTime": "2019-01-01T01:01:01.001Z",
  "FlowDefinition": "旧版：\n\"type: flow\\nversion: v1\\nname: my_flow_name\\nsteps:\\n  - type: pass\\n    name: mypass\"\n\n新版：\n\"Type: StateMachine\\nSpecVersion: v1\\nName: my_flow_name\\nStartAt: my_state\\nStates:\\n  - Type: Pass\\n    Name: my_state\\n    End: true\"",
  "Output": "{\"key\":\"value\"}",
  "FlowName": "my_flow_name",
  "Name": "my_exec_name",
  "Input": "{\"key\":\"value\"}",
  "Environment": {
    "Variables": [
      {
        "Name": "key",
        "Value": "value"
      }
    ]
  }
}

Error codes

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.

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).
412	PreconditionFailed	The resource to be modified has been changed.	The resource to be modified has been changed. Please try again later.
500	InternalServerError	An internal error has occurred. Please retry.	An internal error has occurred. Please retry.
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.
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.