Configuring Storage Class for a Bucket

Functions

OBS allows you to configure a default storage class for a bucket. After doing so, if you do not specify a storage class when uploading or copying an object, or initiating a multipart upload, the object inherits the bucket's storage class. For more information about storage classes, see Configuring a Storage Class.

Authorization Information

To call this API, you must be the bucket owner or have the permission to configure storage class for a bucket. You are advised to use IAM or bucket policies for authorization. For details about OBS authorization methods, see Differences Between OBS Permissions Control Methods.

• If you use IAM for authorization, you need to use either role/policy-based authorization or identity policy-based authorization and configure the required permissions:
  • If you use role/policy-based authorization (IAM v3 APIs in the old IAM version), you need to grant the obs:bucket:PutBucketStoragePolicy permission. For details, see Creating a Custom IAM Policy.
  • If you use identity policy-based authorization (IAM v5 APIs in the new IAM version), you need to grant the obs:bucket:putBucketStoragePolicy permission, as shown in the following table. For details, see Creating a Custom IAM Identity Policy.

    Action	Access Level	Resource Type (*: Required)	Condition Key	Alias	Dependencies
    obs:bucket:putBucketStoragePolicy	Write	bucket *	g:EnterpriseProjectId g:ResourceTag/<tag-key>	-	-
    		-	obs:EpochTime obs:SourceIp obs:TlsVersion obs:CustomDomain

• If you use bucket policies for authorization, you need to grant the obs:bucket:putBucketStoragePolicy permission. For details, see Creating a Custom Bucket Policy.

Request Syntax

The following is an example request. Replace BucketName with your bucket name and RegionID with the ID of the region where your bucket resides. You can obtain the region ID by referring to Supported Regions.

PUT /?storageClass HTTP/1.1 
Host: BucketName.obs.RegionID.myhuaweicloud.com 
Date: GMT Date
Content-Type: type 
Content-Length: BodyLength 
Authorization: SignatureValue

<?xml version="1.0" encoding="UTF-8" standalone="yes"?> 
<StorageClass xmlns="http://obs.ap-southeast-1.myhuaweicloud.com/doc/2015-06-30/">STANDARD</StorageClass>

URI Parameters

Request Headers

This request uses common headers. For details, see Table 3.

Request Body

This request needs a request body parameter to specify the default bucket storage class. For details, see Table 2.

Response Syntax

HTTP/1.1 status_code
Date: GMT Date

Response Headers

This response uses common headers. For details, see Table 1.

Response Body

The response of this API does not contain a response body.

Error Responses

No special error responses are returned. For details about error responses, see Table 2.

Sample Request

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PUT /?storageClass HTTP/1.1
User-Agent: curl/7.29.0
Host: examplebucket.obs.region.myhuaweicloud.com
Accept: */*
Date: WED, 01 Jul 2015 03:18:19 GMT
Authorization: OBS H4IPJX0TQTHTHEBQQCEC:Tf6XbndPx/yNgfAVQ6KIXr7tMj4=
Content-Length: 87

<StorageClass xmlns="http://obs.ap-southeast-1.myhuaweicloud.com/doc/2015-06-30/">STANDARD</StorageClass>

Sample Response

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HTTP/1.1 200 OK
Server: OBS
x-obs-request-id: BF2600000164368E704B571F328A8797
x-obs-id-2: 32AAAQAAEAABSAAgAAEAABAAAQAAEAABCSIsw3tPtUn6damTI5acQmQAcEfmTwl3
Date: WED, 01 Jul 2015 03:18:19 GMT
Content-Length: 0

Using SDKs to Call APIs

You are advised to use OBS SDKs to call APIs. SDKs encapsulate APIs to simplify development. You can call SDK API functions to access OBS without manually calculating signatures.

References

• To use OBS Browser+ to specify the default storage class for a bucket, see Creating a Bucket.
• To use obsutil to specify the default storage class for a bucket, see Creating a Bucket.
• For more information about storage classes, see Configuring a Storage Class.
• For details about the billing items involved in API operations, see Billing Items.