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Help Center/ OBS BrowserJS SDK/ API Reference/ Other APIs/ Upload File (Resumable Upload)

Upload File (Resumable Upload)

Updated on 2023-01-04 GMT+08:00

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API Description

This API is an encapsulated and enhanced version of multipart upload, and supports upload progress reporting, upload event reporting, task pause, and resumable upload.

Method Definition

ObsClient.uploadFile

Request Parameter

Field	Type	Optional or Mandatory	Description
Bucket	String	If UploadCheckpoint is not set, this parameter is mandatory.	Bucket name
Key	String	If UploadCheckpoint is not set, this parameter is mandatory.	Object name
RequestDate	String or Date	Optional	Request time NOTE: When the parameter type is String, the value must comply with the ISO8601 or RFC822 standards.
SourceFile	File or Blob	If UploadCheckpoint is not set, this parameter is mandatory.	Source file to be uploaded (The browser must support FileReader.)
UploadCheckpoint	Object	Optional	Resumable upload recording object, which can be obtained by running the ResumeCallback command.
PartSize	Number	Optional	Part size, in bytes. The value ranges from 100 KB to 5 GB and defaults to 9 MB.
TaskNum	Number	Optional	Maximum number of parts that can be concurrently uploaded. The default value is 1.
ProgressCallback	Function	Optional	Callback function for obtaining the upload progress NOTE: This callback function contains the following parameters in sequence: Number of uploaded bytes, total bytes, and used time (unit: second).
EventCallback	Function	Optional	Callback function for obtaining the upload event NOTE: The callback function contains the following parameters: event type, event parameter, and event result. Possible values of the event type are as follows: uploadPartSucceed, uploadPartFailed, uploadPartAborted, initiateMultipartUploadSucceed, initiateMultipartUploadFailed, completeMultipartUploadSucceed, completeMultipartUploadFailed, completeMultipartUploadAborted
ResumeCallback	Function	Optional	Callback function for obtaining the resumable upload control parameters. NOTE: The callback function contains the following parameters: the control parameter for canceling the resumable upload task and the resumable upload record object. You can invoke the cancel method of the control parameter for canceling the resumable upload task to suspend a resumable upload task. The sourceFile field in the resumable upload record object indicates the file to be uploaded. This field needs to be set again after the browser is restarted.
ACL	String	Optional	Pre-defined access control policy specified during object creation
StorageClass	String	Optional	Storage class, which can be specified during the object creation
Metadata	Object	Optional	Customized metadata of the object
WebsiteRedirectLocation	String	Optional	Location where the object is redirected to, when the bucket is configured with website hosting.
Expires	Number	Optional	Expiration time of the object, in days
ContentType	String	Optional	MIME type of the object
SseKms	String	Optional	Algorithm used in SSE-KMS encryption. The valid value is kms.
SseKmsKey	String	Optional	Master key used in SSE-KMS encryption. The value can be null.
SseC	String	Optional	Algorithm used in SSE-C encryption. The value can be AES256.
SseCKey	String	Optional	Key used in SSE-C encryption. It is calculated by using AES-256.

Returned Result (InterfaceResult)

Field	Type	Description
RequestId	String	Request ID returned by the OBS server
ETag	String	ETag calculated based on the ETags of all combined parts
Bucket	String	Bucket in which parts are combined
Key	String	Object name obtained after part combination
Location	String	URL of the object generated after part combination
VersionId	String	Version ID of the object obtained after part combination

Sample Code

var cp;
var hook;
obsClient.uploadFile({
       Bucket : 'bucketname',
       Key : 'objectkey',
       SourceFile : document.getElementById('input-file').files[0],
       PartSize : 9 * 1024 * 1024,
       ProgressCallback : function(transferredAmount, totalAmount, totalSeconds){
           console.log(transferredAmount * 1.0 / totalSeconds / 1024);
           console.log(transferredAmount * 100.0 / totalAmount);
       },
       ResumeCallback : function(resumeHook, uploadCheckpoint){
           hook = resumeHook;
           cp = uploadCheckpoint;
       }
}, function(err, result){
    if(err){
        console.error('Error-->' + err);
    }else{
          if(result.CommonMsg.Status < 300){
                 console.log('RequestId-->' + result.InterfaceResult.RequestId);
                 console.log('Bucket-->' + result.InterfaceResult.Bucket);
                 console.log('Key-->' + result.InterfaceResult.Key);
                 console.log('Location-->' + result.InterfaceResult.Location);
          }else{
                 console.log('Code-->' + result.CommonMsg.Code);
                 console.log('Message-->' + result.CommonMsg.Message);
          }
    }
});