Request Syntax Request Parameters Response Syntax Response Elements Errors See Also

DescribeStateMachine

Provides information about a state machine's definition, its IAM role Amazon Resource Name (ARN), and configuration.

A qualified state machine ARN can either refer to a Distributed Map state defined within a state machine, a version ARN, or an alias ARN.

The following are some examples of qualified and unqualified state machine ARNs:

The following qualified state machine ARN refers to a Distributed Map state with a label mapStateLabel in a state machine named myStateMachine.

arn:partition:states:region:account-id:stateMachine:myStateMachine/mapStateLabel

Note
If you provide a qualified state machine ARN that refers to a Distributed Map state, the request fails with ValidationException.
The following qualified state machine ARN refers to an alias named PROD.

arn:<partition>:states:<region>:<account-id>:stateMachine:<myStateMachine:PROD>

Note
If you provide a qualified state machine ARN that refers to a version ARN or an alias ARN, the request starts execution for that version or alias.
The following unqualified state machine ARN refers to a state machine named myStateMachine.

arn:<partition>:states:<region>:<account-id>:stateMachine:<myStateMachine>

This API action returns the details for a state machine version if the stateMachineArn you specify is a state machine version ARN.

Note

This operation is eventually consistent. The results are best effort and may not reflect very recent updates and changes.

Request Syntax


{
   "stateMachineArn": "string"
}

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.

stateMachineArn

The Amazon Resource Name (ARN) of the state machine for which you want the information.

If you specify a state machine version ARN, this API returns details about that version. The version ARN is a combination of state machine ARN and the version number separated by a colon (:). For example, stateMachineARN:1.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 256.

Required: Yes

Response Syntax


{
   "creationDate": number,
   "definition": "string",
   "description": "string",
   "label": "string",
   "loggingConfiguration": { 
      "destinations": [ 
         { 
            "cloudWatchLogsLogGroup": { 
               "logGroupArn": "string"
            }
         }
      ],
      "includeExecutionData": boolean,
      "level": "string"
   },
   "name": "string",
   "revisionId": "string",
   "roleArn": "string",
   "stateMachineArn": "string",
   "status": "string",
   "tracingConfiguration": { 
      "enabled": boolean
   },
   "type": "string"
}

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

creationDate

The date the state machine is created.

For a state machine version, creationDate is the date the version was created.

Type: Timestamp

definition

The Amazon States Language definition of the state machine. See Amazon States Language.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 1048576.

description

The description of the state machine version.

Type: String

Length Constraints: Maximum length of 256.

label

A user-defined or an auto-generated string that identifies a Map state. This parameter is present only if the stateMachineArn specified in input is a qualified state machine ARN.

Type: String

loggingConfiguration

Type: LoggingConfiguration object

name

The name of the state machine.

A name must not contain:

white space
brackets < > { } [ ]
wildcard characters ? *
special characters " # % \ ^ | ~ ` $ & , ; : /
control characters (U+0000-001F, U+007F-009F)

To enable logging with CloudWatch Logs, the name should only contain 0-9, A-Z, a-z, - and _.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 80.

revisionId

The revision identifier for the state machine.

Use the revisionId parameter to compare between versions of a state machine configuration used for executions without performing a diff of the properties, such as definition and roleArn.

Type: String

roleArn

The Amazon Resource Name (ARN) of the IAM role used when creating this state machine. (The IAM role maintains security by granting Step Functions access to AWS resources.)

Type: String

Length Constraints: Minimum length of 1. Maximum length of 256.

stateMachineArn

The Amazon Resource Name (ARN) that identifies the state machine.

If you specified a state machine version ARN in your request, the API returns the version ARN. The version ARN is a combination of state machine ARN and the version number separated by a colon (:). For example, stateMachineARN:1.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 256.

status