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    Cloud Backup:CreateTempFileUploadUrl

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    Cloud Backup:CreateTempFileUploadUrl

    Last Updated:Aug 28, 2026

    Generates the parameters and signature for uploading a file to Object Storage Service (OSS).

    Operation description

    1. You can use the returned values to upload a file directly to Object Storage Service (OSS) by using a form.

    2. For more information about form-based uploads, see OSS documentation.

    3. Files uploaded to OSS are periodically deleted by the system.

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    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

    hbr:CreateTempFileUploadUrl

    create

    *All Resource

    *

    		 None None

    Request parameters

    Parameter

    Type

    Required

    Description

    Example
    FileName

    string

    Yes

    The name of the file to be uploaded.

    file-list.txt

    Response elements

    Element

    Type

    Description

    Example

    object

    Endpoint

    string

    The OSS endpoint for the file upload.

    oss-cn-shenzhen.aliyuncs.com
    RequestId

    string

    The request ID.

    F4EEB401-DD21-588D-AE3B-1E835C7655E1
    ExpireTime

    integer

    The expiration time of the upload signature, in UNIX timestamp format. Unit: seconds.

    1654326678
    Success

    boolean

    Indicates whether the request was successful. Valid values:

    • true: The request is successful.

    • false: The request fails.

    true
    Code

    string

    The HTTP status code. A value of 200 indicates success.

    200
    TempFileKey

    string

    The OSS object key for the file upload.

    temp/1440155109798732/upload/2022-07-29/49bed34c-b430-4e7e-89b1-4be2b734f95c/iaclone.diff
    Message

    string

    The response message. "successful" is returned on success; otherwise, an error message is returned.

    successful
    BucketName

    string

    The name of the destination OSS bucket.

    hbr-temp-bucket
    OssAccessKeyId

    string

    The AccessKey ID for the OSS upload.

    LTAI****Up
    Policy

    string

    The upload policy for the OSS form upload.

    eyJleH****V19
    Signature

    string

    The signature for the OSS form upload.

    RmhI****0A=

    Examples

    Success response

    JSON format

    {
  "Endpoint": "oss-cn-shenzhen.aliyuncs.com",
  "RequestId": "F4EEB401-DD21-588D-AE3B-1E835C7655E1",
  "ExpireTime": 1654326678,
  "Success": true,
  "Code": "200",
  "TempFileKey": "temp/1440155109798732/upload/2022-07-29/49bed34c-b430-4e7e-89b1-4be2b734f95c/iaclone.diff",
  "Message": "successful",
  "BucketName": "hbr-temp-bucket",
  "OssAccessKeyId": "LTAI****Up",
  "Policy": "eyJleH****V19",
  "Signature": "RmhI****0A="
}

    Error codes

    See Error Codes for a complete list.

    Release notes

    See Release Notes for a complete list.