Obtaining Bucket Storage Class Information

Functions

This API is used to obtain the default storage class of a bucket. 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 obtain the storage class information of 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:GetBucketStoragePolicy 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:getBucketStoragePolicy 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:getBucketStoragePolicy	Read	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:GetBucketStoragePolicy 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.

GET /?storageClass HTTP/1.1 
Host: BucketName.obs.RegionID.myhuaweicloud.com 
Date: GMT Date
Authorization: SignatureValue

URI Parameters

Request Headers

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

Request Body

This request contains no request body parameters.

Response Syntax

HTTP/1.1 status_code 
Date: GMT Date 
Content-Type: type 
Content-Length: BodyLength

<?xml version="1.0" encoding="UTF-8" standalone="yes"?> 

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

Response Headers

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

Response Body

This response contains elements to provide details about the storage class information of a bucket. Table 2 describes the elements.

Error Responses

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

Sample Request

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GET /?storageClass HTTP/1.1
User-Agent: curl/7.29.0
Host: examplebucket.obs.region.myhuaweicloud.com
Accept: */*
Date: WED, 01 Jul 2015 03:20:28 GMT
Authorization: OBS H4IPJX0TQTHTHEBQQCEC:0zVTSdKG6OFCIH2dKvmsVGYCQyw=

Sample Response

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HTTP/1.1 200 OK
Server: OBS
x-obs-request-id: BF260000016436BE45820FDF3A65B42C
x-obs-id-2: 32AAAQAAEAABAAAQAAEAABAAAQAAEAABCSCju1CZy3ZfRVW5hiNd024lRFdUoqWy
Content-Type: application/xml
Date: WED, 01 Jul 2015 03:20:28 GMT
Content-Length: 142

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>

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

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 obtain the default storage class of a bucket, see Creating a Bucket.
• To use obsutil to obtain the default storage class of 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.