Object Operations

Put Object

Adds an object to a bucket. You must have write permissions on the bucket to perform this operation.

Syntax

PUT /{bucket}/{object} HTTP/1.1

Request Headers

Name	Description	Valid Values	Required
content-md5	A base64 encoded MD-5 hash of the message.	A string. No defaults or constraints.	No
content-type	A standard MIME type.	Any MIME type. Default: `binary/octet-stream`	No
x-amz-meta-<…>	User metadata. Stored with the object.	A string up to 8kb. No defaults.	No
x-amz-acl	A canned ACL.	`private`, `public-read`, `public-read-write`, `authenticated-read`	No

Copy Object

To copy an object, use PUT and specify a destination bucket and the object name.

Syntax

PUT /{dest-bucket}/{dest-object} HTTP/1.1
x-amz-copy-source: {source-bucket}/{source-object}

Request Headers

Name	Description	Valid Values	Required
x-amz-copy-source	The source bucket name + object name.	{bucket}/{obj}	Yes
x-amz-acl	A canned ACL.	`private`, `public-read`, `public-read-write`, `authenticated-read`	No
x-amz-copy-if-modified-since	Copies only if modified since the timestamp.	Timestamp	No
x-amz-copy-if-unmodified-since	Copies only if unmodified since the timestamp.	Timestamp	No
x-amz-copy-if-match	Copies only if object ETag matches ETag.	Entity Tag	No
x-amz-copy-if-none-match	Copies only if object ETag doesn’t match.	Entity Tag	No

Response Entities

Name	Type	Description
CopyObjectResult	Container	A container for the response elements.
LastModified	Date	The last modified date of the source object.
Etag	String	The ETag of the new object.

Remove Object

Removes an object. Requires WRITE permission set on the containing bucket.

Syntax

DELETE /{bucket}/{object} HTTP/1.1

Get Object

Retrieves an object from a bucket within RADOS.

Syntax

GET /{bucket}/{object} HTTP/1.1

Request Headers

Name	Description	Valid Values	Required
range	The range of the object to retrieve.	Range: bytes=beginbyte-endbyte	No
if-modified-since	Gets only if modified since the timestamp.	Timestamp	No
if-unmodified-since	Gets only if not modified since the timestamp.	Timestamp	No
if-match	Gets only if object ETag matches ETag.	Entity Tag	No
if-none-match	Gets only if object ETag matches ETag.	Entity Tag	No

Response Headers

Name	Description
Content-Range	Data range, will only be returned if the range header field was specified in the request

Get Object Info

Returns information about object. This request will return the same header information as with the Get Object request, but will include the metadata only, not the object data payload.

Syntax

HEAD /{bucket}/{object} HTTP/1.1

Request Headers

Name	Description	Valid Values	Required
range	The range of the object to retrieve.	Range: bytes=beginbyte-endbyte	No
if-modified-since	Gets only if modified since the timestamp.	Timestamp	No
if-unmodified-since	Gets only if not modified since the timestamp.	Timestamp	No
if-match	Gets only if object ETag matches ETag.	Entity Tag	No
if-none-match	Gets only if object ETag matches ETag.	Entity Tag	No

Get Object ACL

Syntax

GET /{bucket}/{object}?acl HTTP/1.1

Response Entities

Name	Type	Description
`AccessControlPolicy`	Container	A container for the response.
`AccessControlList`	Container	A container for the ACL information.
`Owner`	Container	A container for the object owner’s `ID` and `DisplayName`.
`ID`	String	The object owner’s ID.
`DisplayName`	String	The object owner’s display name.
`Grant`	Container	A container for `Grantee` and `Permission`.
`Grantee`	Container	A container for the `DisplayName` and `ID` of the user receiving a grant of permission.
`Permission`	String	The permission given to the `Grantee` object.

Set Object ACL

Syntax

PUT /{bucket}/{object}?acl

Request Entities

Name	Type	Description
`AccessControlPolicy`	Container	A container for the response.
`AccessControlList`	Container	A container for the ACL information.
`Owner`	Container	A container for the object owner’s `ID` and `DisplayName`.
`ID`	String	The object owner’s ID.
`DisplayName`	String	The object owner’s display name.
`Grant`	Container	A container for `Grantee` and `Permission`.
`Grantee`	Container	A container for the `DisplayName` and `ID` of the user receiving a grant of permission.
`Permission`	String	The permission given to the `Grantee` object.

Initiate Multi-part Upload

Initiate a multi-part upload process.

Syntax

POST /{bucket}/{object}?uploads

Request Headers

Name	Description	Valid Values	Required
content-md5	A base64 encoded MD-5 hash of the message.	A string. No defaults or constraints.	No
content-type	A standard MIME type.	Any MIME type. Default: `binary/octet-stream`	No
x-amz-meta-<…>	User metadata. Stored with the object.	A string up to 8kb. No defaults.	No
x-amz-acl	A canned ACL.	`private`, `public-read`, `public-read-write`, `authenticated-read`	No

Response Entities

Name	Type	Description
`InitiatedMultipartUploadsResult`	Container	A container for the results.
`Bucket`	String	The bucket that will receive the object contents.
`Key`	String	The key specified by the `key` request parameter (if any).
`UploadId`	String	The ID specified by the `upload-id` request parameter identifying the multipart upload (if any).

Multipart Upload Part

Syntax

PUT /{bucket}/{object}?partNumber=&uploadId= HTTP/1.1

HTTP Response

The following HTTP response may be returned:

HTTP Status	Status Code	Description
404	NoSuchUpload	Specified upload-id does not match any initiated upload on this object

List Multipart Upload Parts

Syntax

GET /{bucket}/{object}?uploadId=123 HTTP/1.1

Response Entities

Name	Type	Description
`ListPartsResult`	Container	A container for the results.
`Bucket`	String	The bucket that will receive the object contents.
`Key`	String	The key specified by the `key` request parameter (if any).
`UploadId`	String	The ID specified by the `upload-id` request parameter identifying the multipart upload (if any).
`Initiator`	Container	Contains the `ID` and `DisplayName` of the user who initiated the upload.
`ID`	String	The initiator’s ID.
`DisplayName`	String	The initiator’s display name.
`Owner`	Container	A container for the `ID` and `DisplayName` of the user who owns the uploaded object.
`StorageClass`	String	The method used to store the resulting object. `STANDARD` or `REDUCED_REDUNDANCY`
`PartNumberMarker`	String	The part marker to use in a subsequent request if `IsTruncated` is `true`. Precedes the list.
`NextPartNumberMarker`	String	The next part marker to use in a subsequent request if `IsTruncated` is `true`. The end of the list.
`MaxParts`	Integer	The max parts allowed in the response as specified by the `max-parts` request parameter.
`IsTruncated`	Boolean	If `true`, only a subset of the object’s upload contents were returned.
`Part`	Container	A container for `LastModified`, `PartNumber`, `ETag` and `Size` elements.
`LastModified`	Date	Date and time at which the part was uploaded.
`PartNumber`	Integer	The identification number of the part.
`ETag`	String	The part’s entity tag.
`Size`	Integer	The size of the uploaded part.

Complete Multipart Upload

Assembles uploaded parts and creates a new object, thereby completing a multipart upload.

Syntax

POST /{bucket}/{object}?uploadId= HTTP/1.1

Request Entities

Name	Type	Description	Required
`CompleteMultipartUpload`	Container	A container consisting of one or more parts.	Yes
`Part`	Container	A container for the `PartNumber` and `ETag`.	Yes
`PartNumber`	Integer	The identifier of the part.	Yes
`ETag`	String	The part’s entity tag.	Yes

Response Entities

Name	Type	Description
CompleteMultipartUploadResult	Container	A container for the response.
Location	URI	The resource identifier (path) of the new object.
Bucket	String	The name of the bucket that contains the new object.
Key	String	The object’s key.
ETag	String	The entity tag of the new object.

Abort Multipart Upload

Syntax

DELETE /{bucket}/{object}?uploadId= HTTP/1.1

Append Object

Append data to an object. You must have write permissions on the bucket to perform this operation. It is used to upload files in appending mode. The type of the objects created by the Append Object operation is Appendable Object, and the type of the objects uploaded with the Put Object operation is Normal Object. Append Object can’t be used if bucket versioning is enabled or suspended. Synced object will become normal in multisite, but you can still append to the original object. Compression and encryption features are disabled for Appendable objects.

Syntax

PUT /{bucket}/{object}?append&position= HTTP/1.1

Request Headers

Name	Description	Valid Values	Required
content-md5	A base64 encoded MD-5 hash of the message.	A string. No defaults or constraints.	No
content-type	A standard MIME type.	Any MIME type. Default: `binary/octet-stream`	No
x-amz-meta-<…>	User metadata. Stored with the object.	A string up to 8kb. No defaults.	No
x-amz-acl	A canned ACL.	`private`, `public-read`, `public-read-write`, `authenticated-read`	No

Response Headers

Name	Description
x-rgw-next-append-position	Next position to append object

HTTP Response

The following HTTP response may be returned:

HTTP Status	Status Code	Description
409	PositionNotEqualToLength	Specified position does not match object length
409	ObjectNotAppendable	Specified object can not be appended
409	InvalidBucketstate	Bucket versioning is enabled or suspended

Put Object Retention

Places an Object Retention configuration on an object.

Syntax

PUT /{bucket}/{object}?retention&versionId= HTTP/1.1

Request Entities

Name	Type	Description	Required
`Retention`	Container	A container for the request.	Yes
`Mode`	String	Retention mode for the specified object. Valid Values: GOVERNANCE/COMPLIANCE \| Yes
`RetainUntilDate`	Timestamp	Retention date. Format: 2020-01-05T00:00:00.000Z \| Yes

Get Object Retention

Gets an Object Retention configuration on an object.

Syntax

GET /{bucket}/{object}?retention&versionId= HTTP/1.1

Response Entities

Name	Type	Description	Required
`Retention`	Container	A container for the request.	Yes
`Mode`	String	Retention mode for the specified object. Valid Values: GOVERNANCE/COMPLIANCE \| Yes
`RetainUntilDate`	Timestamp	Retention date. Format: 2020-01-05T00:00:00.000Z \| Yes

Put Object Legal Hold

Applies a Legal Hold configuration to the specified object.

Syntax

PUT /{bucket}/{object}?legal-hold&versionId= HTTP/1.1

Request Entities

Name	Type	Description	Required
`LegalHold`	Container	A container for the request.	Yes
`Status`	String	Indicates whether the specified object has a Legal Hold in place. Valid Values: ON/OFF	Yes

Get Object Legal Hold

Gets an object’s current Legal Hold status.

Syntax

GET /{bucket}/{object}?legal-hold&versionId= HTTP/1.1

Response Entities

Name	Type	Description	Required
`LegalHold`	Container	A container for the request.	Yes
`Status`	String	Indicates whether the specified object has a Legal Hold in place. Valid Values: ON/OFF	Yes