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Elastic Compute Service:DescribeTaskAttribute

Last Updated:Nov 26, 2025

Queries the details of an asynchronous task. The asynchronous tasks that you can query by calling this operation are the tasks generated by the ImportImage, ExportImage, and ModifyDiskSpec operations.

Debugging

You can run this interface directly in OpenAPI Explorer, saving you the trouble of calculating signatures. After running successfully, OpenAPI Explorer can automatically generate SDK code samples.

Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

  • Operation: the value that you can use in the Action element to specify the operation on a resource.
  • Access level: the access level of each operation. The levels are read, write, and list.
  • Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
    • For mandatory resource types, indicate with a prefix of * .
    • If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
  • Condition Key: the condition key that is defined by the cloud service.
  • Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
OperationAccess levelResource typeCondition keyAssociated operation
ecs:DescribeTaskAttributeget
*All Resources
*
    none
none

Request parameters

ParameterTypeRequiredDescriptionExample
RegionIdstringYes

The region ID of the task. You can call the DescribeRegions operation to query the most recent region list.

cn-hangzhou
TaskIdstringYes

The ID of the task. You can call the DescribeTasks operation to query the list of task IDs.

t-ce946ntx4wr****

Response parameters

ParameterTypeDescriptionExample
object
CreationTimestring

The time when the task was created.

2015-11-23T02:13Z
SupportCancelstring

Indicates whether the task can be canceled by calling the CancelTask operation. Valid values:

  • true
  • false
true
TotalCountinteger

The total number of tasks.

1
SuccessCountinteger

The number of completed tasks.

1
RegionIdstring

The region ID of the task.

cn-hangzhou
TaskActionstring

The name of the operation that generated the task.

ExportImage
FailedCountinteger

The number of failed tasks.

0
RequestIdstring

The request ID.

473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E
TaskStatusstring

The status of the task.

Finished
TaskProcessstring

The progress of the task.

100%
FinishedTimestring

The time when the task was completed.

2015-11-23T02:19Z
TaskIdstring

The ID of the task.

t-ce946ntx4wr****
OperationProgressSetarray<object>

The return data of the task.

OperationProgressobject
ErrorMsgstring

The error message.

The specified RegionId parameter is invalid.
ErrorCodestring

The error code.

ParameterInvalid
OperationStatusstring

The status of the operation.

Success
RelatedItemSetarray<object>

The type of resource information.

RelatedItemobject
Namestring

The name of the related item.

OSSObject
Valuestring

The value of the related item.

MYOSSPRE_m-23f8tcp***_t-23ym6mv***.vhd

Examples

Sample success responses

JSONformat

{
  "CreationTime": "2015-11-23T02:13Z",
  "SupportCancel": true,
  "TotalCount": 1,
  "SuccessCount": 1,
  "RegionId": "cn-hangzhou",
  "TaskAction": "ExportImage",
  "FailedCount": 0,
  "RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E",
  "TaskStatus": "Finished",
  "TaskProcess": "100%",
  "FinishedTime": "2015-11-23T02:19Z",
  "TaskId": "t-ce946ntx4wr****",
  "OperationProgressSet": {
    "OperationProgress": [
      {
        "ErrorMsg": "The specified RegionId parameter is invalid.",
        "ErrorCode": "ParameterInvalid",
        "OperationStatus": "Success",
        "RelatedItemSet": {
          "RelatedItem": [
            {
              "Name": "OSSObject",
              "Value": "MYOSSPRE_m-23f8tcp***_t-23ym6mv***.vhd"
            }
          ]
        }
      }
    ]
  }
}

Error codes

HTTP status codeError codeError messageDescription
400InvalidRegionId.NotFoundThe specified RegionId does not exist.The specified region ID does not exist.
400MissingParameterAn input parameter "RegionId" that is mandatory for processing the request is not supplied.-
400MissingParameterAn input parameter "TaskId" that is mandatory for processing the request is not supplied.-
400InvalidTaskId.NotFoundThe specified "TaskId" is not found.The specified task does not exist

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

Change history

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