You can call this operation to query the details of an asynchronous task. You can query the asynchronous tasks including importing images, exporting images, and modifying disk categories. The asynchronous tasks are generated by the ImportImage, ExportImage, and ModifyDiskSpec operations.
Debugging
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:
- The required resource types are displayed in bold characters.
- If the permissions cannot be granted at the resource level,
All Resourcesis 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.
| Operation | Access level | Resource type | Condition key | Associated operation |
|---|---|---|---|---|
| ecs:DescribeTaskAttribute | get | *All Resources * |
| none |
Request parameters
| Parameter | Type | Required | Description | Example |
|---|---|---|---|---|
| RegionId | string | Yes | The region ID of the task. You can call the DescribeRegions operation to query the most recent region list. | cn-hangzhou |
| TaskId | string | Yes | The ID of the task. You can call the DescribeTasks operation to query the list of task IDs. | t-ce946ntx4wr**** |
Response parameters
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 code | Error code | Error message | Description |
|---|---|---|---|
| 400 | InvalidRegionId.NotFound | The specified RegionId does not exist. | The specified region ID does not exist. |
| 400 | MissingParameter | An input parameter "RegionId" that is mandatory for processing the request is not supplied. | - |
| 400 | MissingParameter | An input parameter "TaskId" that is mandatory for processing the request is not supplied. | - |
| 400 | InvalidTaskId.NotFound | The specified "TaskId" is not found. | - |
For a list of error codes, visit the Service error codes.