Creating a Signed URL

API Description

You can use this API to generate a URL whose Query parameter is carried with authentication information, by specifying the AK and SK, HTTP method, and request parameter. You can use a signed URL to perform specific operations on OBS.

Method Definition

ObsClient.createSignedUrlSync

Request Parameter

Field	Type	Optional or Mandatory	Description
Method	String	Mandatory	HTTP method. Possible values are: GET POST PUT DELETE HEAD
Bucket	String	Optional	Bucket name
Key	String	Optional	Object name
SpecialParam	String	Optional	Special operator, which indicates the sub-resource to be operated. Possible values are: versions uploads location storageinfo quota storagePolicy acl append logging policy lifecycle website versioning cors notification tagging delete restore
Expires	Number	Optional	Expiration time of the signed URL, in seconds. The default value is 300.
Headers	Object	Optional	Headers in the request
QueryParams	Object	Optional	Query parameters in the request

Returned Result

Field	Type	Description
SignedUrl	String	Signed URL
ActualSignedRequestHeaders	Object	Actual headers in the request initiated by using the signed URL

Sample Code

// Generate a signed URL for creating a bucket.
var createBucketResult = obsClient.createSignedUrlSync({Method : 'PUT', Bucket : 'bucketname'});
console.log('SignedUrl-->' + createBucketResult['SignedUrl']);
console.log('ActualSignedRequestHeaders-->' + JSON.stringify(createBucketResult['ActualSignedRequestHeaders']));

// Generate a signed URL for uploading an object.
var putObjectResult = obsClient.createSignedUrlSync({Method : 'PUT', Bucket : 'bucketname', Key : 'objectkey', Headers : {'Content-Type' : 'text/plain'}});
console.log('SignedUrl-->' + putObjectResult['SignedUrl']);
console.log('ActualSignedRequestHeaders-->' + JSON.stringify(putObjectResult['ActualSignedRequestHeaders']));

// Generate a signed URL for setting an object ACL.
var setObjectAclResult = obsClient.createSignedUrlSync({Method : 'PUT', Bucket : 'bucketname', Key : 'objectkey', SpecialParam: 'acl', Headers: {'x-obs-acl' : 'public-read'}});
console.log('SignedUrl-->' + setObjectAclResult['SignedUrl']);
console.log('ActualSignedRequestHeaders-->' + JSON.stringify(setObjectAclResult['ActualSignedRequestHeaders']));

// Generate a signed URL for downloading an object.
var getObjectResult = obsClient.createSignedUrlSync({Method : 'GET', Bucket : 'bucketname', Key : 'objectkey'});
console.log('SignedUrl-->' + getObjectResult['SignedUrl']);
console.log('ActualSignedRequestHeaders-->' + JSON.stringify(getObjectResult['ActualSignedRequestHeaders']));

// Generate a signed URL for deleting an object.
var deleteObjectResult = obsClient.createSignedUrlSync({Method : 'DELETE', Bucket : 'bucketname', Key : 'objectkey'});
console.log('SignedUrl-->' + deleteObjectResult['SignedUrl']);
console.log('ActualSignedRequestHeaders-->' + JSON.stringify(deleteObjectResult['ActualSignedRequestHeaders']));

// Generate a signed URL for deleting a bucket.
var deleteBucketResult = obsClient.createSignedUrlSync({Method : 'DELETE', Bucket : 'bucketname'});
console.log('SignedUrl-->' + deleteBucketResult['SignedUrl']);
console.log('ActualSignedRequestHeaders-->' + JSON.stringify(deleteBucketResult['ActualSignedRequestHeaders']));