DescribeActivityType - Amazon Simple Workflow Service


Returns information about the specified activity type. This includes configuration settings provided when the type was registered and other general information about the type.

Access Control

You can use IAM policies to control this action's access to Amazon SWF resources as follows:

  • Use a Resource element with the domain name to limit the action to only specified domains.

  • Use an Action element to allow or deny permission to call this action.

  • Constrain the following parameters by using a Condition element with the appropriate keys.

    • String constraint. The key is

    • activityType.version: String constraint. The key is swf:activityType.version.

If the caller doesn't have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter is set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows in the Amazon SWF Developer Guide.

Request Syntax

{ "activityType": { "name": "string", "version": "string" }, "domain": "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.


The activity type to get information about. Activity types are identified by the name and version that were supplied when the activity was registered.

Type: ActivityType object

Required: Yes


The name of the domain in which the activity type is registered.

Type: String

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

Required: Yes

Response Syntax

{ "configuration": { "defaultTaskHeartbeatTimeout": "string", "defaultTaskList": { "name": "string" }, "defaultTaskPriority": "string", "defaultTaskScheduleToCloseTimeout": "string", "defaultTaskScheduleToStartTimeout": "string", "defaultTaskStartToCloseTimeout": "string" }, "typeInfo": { "activityType": { "name": "string", "version": "string" }, "creationDate": number, "deprecationDate": number, "description": "string", "status": "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.


The configuration settings registered with the activity type.

Type: ActivityTypeConfiguration object


General information about the activity type.

The status of activity type (returned in the ActivityTypeInfo structure) can be one of the following.

  • REGISTERED – The type is registered and available. Workers supporting this type should be running.

  • DEPRECATED – The type was deprecated using DeprecateActivityType, but is still in use. You should keep workers supporting this type running. You cannot create new tasks of this type.

Type: ActivityTypeInfo object


For information about the errors that are common to all actions, see Common Errors.


Returned when the caller doesn't have sufficient permissions to invoke the action.

HTTP Status Code: 400


Returned when the named resource cannot be found with in the scope of this operation (region or domain). This could happen if the named resource was never created or is no longer available for this operation.

HTTP Status Code: 400


DescribeActivityType Example

This example illustrates one usage of DescribeActivityType.

Sample Request

POST / HTTP/1.1 Host: User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv: Gecko/20111212 Firefox/3.6.25 ( .NET CLR 3.5.30729; .NET4.0E) Accept: application/json, text/javascript, */* Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 115 Connection: keep-alive Content-Type: application/x-amz-json-1.0 X-Requested-With: XMLHttpRequest X-Amz-Date: Sun, 15 Jan 2012 03:04:10 GMT X-Amz-Target: SimpleWorkflowService.DescribeActivityType Content-Encoding: amz-1.0 X-Amzn-Authorization: AWS3 AWSAccessKeyId=AKIAIOSFODNN7EXAMPLE,Algorithm=HmacSHA256,SignedHeaders=Host;X-Amz-Date;X-Amz-Target;Content-Encoding,Signature=XiGRwOZNLt+ic3VBWvIlRGdcFcRJVSE8J7zyZLU3oXg= Referer: Content-Length: 95 Pragma: no-cache Cache-Control: no-cache { "domain": "867530901", "activityType": { "version": "1.0", "name": "activityVerify" } }

Sample Response

HTTP/1.1 200 OK Content-Length: 387 Content-Type: application/json x-amzn-RequestId: 98d56ff5-3f25-11e1-9b11-7182192d0b57 { "configuration": { "defaultTaskHeartbeatTimeout": "120", "defaultTaskList": {"name": "mainTaskList"}, "defaultTaskPriority", "100", "defaultTaskScheduleToCloseTimeout": "900", "defaultTaskScheduleToStartTimeout": "300", "defaultTaskStartToCloseTimeout": "600" }, "typeInfo": { "activityType": {"name": "activityVerify", "version": "1.0"}, "creationDate": 1326586446.471, "description": "Verify the customer credit", "status": "REGISTERED" } }

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: