Configuring WORM Retention for an Object¶
Functions¶
This operation configures or updates the retention period for objects uploaded to a bucket with WORM enabled.
When you upload an object, if you do not configure a protection period or apply the default bucket-level protection rule to the object, you can perform this operation to configure a protection period for the object.
When you upload an object, if you configure a protection period or apply the default bucket-level protection rule to the object, you can perform this operation to prolong the protection period for the object.
The protection period of an object can only be modified, but not deleted.
Note
To configure or update the protection period of an object, you must have the s3:PutObjectRetention permission.
Versioning¶
OBS automatically enables versioning when you enable WORM for a bucket. In such case, the object you uploaded to the bucket will be assigned a version ID. An object-level WORM policy is applied to the current object version by default, but you can specify a version ID to make the policy applied to a specific object version. The WORM configuration does not apply to a delete marker with a unique version ID.
Multipart Upload¶
Before a multipart upload is complete, the default bucket-level WORM policy is not automatically applied to the object parts uploaded. Besides, you cannot configure an object-level WORM policy using a header when you upload a part or assemble the object parts, or for a part that is already uploaded to the bucket. You can call this API to configure a WORM retention policy for the new object after the object parts are assembled.
Request Syntax¶
PUT /ObjectName?retention HTTP/1.1
Host: bucketname.obs.region.example.com
Date: date
Authorization: authorization
<Retention>
<Mode>String</Mode>
<RetainUntilDate>Timestamp</RetainUntilDate>
</Retention>
Request Parameters¶
Table 1 describes the parameters.
Parameter | Description | Mandatory |
|---|---|---|
versionId | ID of the object version on which this operation will be performed. If this header is not carried, this operation applies to the current object version. Type: string | No |
Request Headers¶
This request uses common headers. For details about common request headers, see the section Common Request Headers.
Request Elements¶
Element | Description | Mandatory |
|---|---|---|
Retention | Container for configuring an object-level WORM retention policy. Type: container | Yes |
Mode | Protection mode for the object. It can only be set to COMPLIANCE now. Type: string Example: COMPLIANCE | Yes |
RetainUntilDate | Protection period for the object. The value can be a timestamp or in the ISO format. A timestamp must be accurate to milliseconds. For example, the timestamp for 13:20:35 on July 1, 2015 should be 1435728035000. A time zone is required in the ISO time format. For example, the ISO UTC time for 13:20:35 on July 1, 2015 should be 2015-07-01T13:20:35Z. Note The value of this field must be later than the current time and can be extended but not shortened. Type: string Example: 1435728035000 (a timestamp) or 2015-07-01T13:20:35Z (in the ISO format) Remarks: timestamp value is accurate to milliseconds in Unix time. | Yes |
Response Syntax¶
HTTP/1.1 status_code
Date: date
Content-Length: length
Response Headers¶
This response uses common headers. For details about common response headers, see section Common Response Headers.
Response Elements¶
This response contains no elements.
Error Responses¶
Table2 Special errors describes possible special errors in this request.
Error Code | Description | HTTP Status Code |
|---|---|---|
InvalidRequest | The object retention period cannot be configured, because object lock is not enabled for the bucket. | 400 |
InvalidRequest | The retention period date must be later than the current or the configured date. | 400 |
MalformedObjectLockError | Invalid format of the Object Lock configuration. | 400 |
For details about other errors, see Table 1.
Sample Request 1¶
Configuring the WORM protection (with the protection period specified as a timestamp) for an object.
PUT /objectname?retention HTTP/1.1
Host: bucketname.obs.region.example.com
Date: WED, 01 Jul 2015 02:25:05 GMT
Authorization: authorization
Content-Type: application/xml
Content-Length: 157
<Retention>
<Mode>COMPLIANCE</Mode>
<RetainUntilDate>1435728035000</RetainUntilDate>
</Retention>
Sample Response 1¶
HTTP/1.1 200 OK
Server: OBS
x-amz-request-id: BF260000016435CE298386946AE4C482
x-amz-id-2: 32AAAQAAEAABSAAgAAEAABAAAQAAEAABCT9W2tcvLmMJ+plfdopaD62S0npbaRUz
Date: WED, 01 Jul 2015 02:25:06 GMT
Content-Length: 0
Sample Request 2¶
Configuring the WORM protection (with the protection period specified in the ISO format) for an object.
PUT /objectname?retention HTTP/1.1
Host: bucketname.obs.region.example.com
WED, 01 Jul 2015 02:25:06 GMT
Authorization: authorization
Content-Type: application/xml
Content-Length: 193
<Retention>
<Mode>COMPLIANCE</Mode>
<RetainUntilDate>2015-07-01T13:20:35Z</RetainUntilDate>
</Retention>
Sample Response 2¶
HTTP/1.1 200 OK
Server: OBS
x-amz-request-id: 0000018E3CC039E75306D1560F6A5B61
x-amz-id-2: 32AAAUgAIAABAAAQAAEAABAAAQAAEAABCS14XamzycaPY1tivqczu/2SI2sbVBNZ
Date: WED, 01 Jul 2015 02:25:06 GMT
Content-Length: 0