752 lines
20 KiB
ReStructuredText
752 lines
20 KiB
ReStructuredText
.. -*- rst -*-
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=======
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Objects
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=======
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Creates, replaces, shows details for, and deletes objects. Copies
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objects from another object with a new or different name. Updates
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object metadata. For more information and concepts about
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objects see `Object Storage API overview
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<https://docs.openstack.org/swift/latest/api/object_api_v1_overview.html>`_
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and `Large Objects
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<https://docs.openstack.org/swift/latest/api/large_objects.html>`_.
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Get object content and metadata
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===============================
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.. rest_method:: GET /v1/{account}/{container}/{object}
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Downloads the object content and gets the object metadata.
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This operation returns the object metadata in the response headers
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and the object content in the response body.
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If this is a large object, the response body contains the
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concatenated content of the segment objects. To get the manifest
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instead of concatenated segment objects for a static large object,
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use the ``multipart-manifest`` query parameter.
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Example requests and responses:
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- Show object details for the ``goodbye`` object in the
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``marktwain`` container:
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::
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curl -i $publicURL/marktwain/goodbye -X GET -H "X-Auth-Token: $token"
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::
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HTTP/1.1 200 OK
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Content-Length: 14
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Accept-Ranges: bytes
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Last-Modified: Wed, 15 Jan 2014 16:41:49 GMT
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Etag: 451e372e48e0f6b1114fa0724aa79fa1
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X-Timestamp: 1389804109.39027
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X-Object-Meta-Orig-Filename: goodbyeworld.txt
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Content-Type: application/octet-stream
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X-Trans-Id: tx8145a190241f4cf6b05f5-0052d82a34
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X-Openstack-Request-Id: tx8145a190241f4cf6b05f5-0052d82a34
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Date: Thu, 16 Jan 2014 18:51:32 GMT
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Goodbye World!
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- Show object details for the ``goodbye`` object, which does not
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exist, in the ``janeausten`` container:
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::
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curl -i $publicURL/janeausten/goodbye -X GET -H "X-Auth-Token: $token"
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::
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HTTP/1.1 404 Not Found
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Content-Length: 70
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Content-Type: text/html; charset=UTF-8
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X-Trans-Id: tx073f7cbb850c4c99934b9-0052d82b04
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X-Openstack-Request-Id: tx073f7cbb850c4c99934b9-0052d82b04
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Date: Thu, 16 Jan 2014 18:55:00 GMT
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<html>
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<h1>Not Found
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</h1>
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<p>The resource could not be found.
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</p>
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</html>
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The operation returns the ``Range Not Satisfiable (416)`` response
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code for any ranged GET requests that specify more than:
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- Fifty ranges.
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- Three overlapping ranges.
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- Eight non-increasing ranges.
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Normal response codes: 200
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Error response codes:416,404,
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Request
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-------
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.. rest_parameters:: parameters.yaml
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- account: account
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- container: container
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- object: object
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- X-Auth-Token: X-Auth-Token
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- X-Service-Token: X-Service-Token
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- X-Newest: X-Newest
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- temp_url_sig: temp_url_sig
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- temp_url_expires: temp_url_expires
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- filename: filename
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- multipart-manifest: multipart-manifest_get
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- Range: Range
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- If-Match: If-Match
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- If-None-Match: If-None-Match-get-request
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- If-Modified-Since: If-Modified-Since
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- If-Unmodified-Since: If-Unmodified-Since
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- X-Trans-Id-Extra: X-Trans-Id-Extra
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Response Parameters
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-------------------
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.. rest_parameters:: parameters.yaml
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- Content-Length: Content-Length_get_resp
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- Content-Type: Content-Type_obj_resp
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- X-Object-Meta-name: X-Object-Meta-name_resp
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- Content-Disposition: Content-Disposition_resp
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- Content-Encoding: Content-Encoding_resp
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- X-Delete-At: X-Delete-At
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- Accept-Ranges: Accept-Ranges
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- X-Object-Manifest: X-Object-Manifest_resp
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- Last-Modified: Last-Modified
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- ETag: ETag_obj_resp
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- X-Timestamp: X-Timestamp
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- X-Trans-Id: X-Trans-Id
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- X-Openstack-Request-Id: X-Openstack-Request-Id
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- Date: Date
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- X-Static-Large-Object: X-Static-Large-Object
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Response Example
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----------------
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See examples above.
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Create or replace object
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========================
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.. rest_method:: PUT /v1/{account}/{container}/{object}
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Creates an object with data content and metadata, or replaces an existing object with data content and metadata.
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The PUT operation always creates an object. If you use this
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operation on an existing object, you replace the existing object
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and metadata rather than modifying the object. Consequently, this
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operation returns the ``Created (201)`` response code.
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If you use this operation to copy a manifest object, the new object
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is a normal object and not a copy of the manifest. Instead it is a
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concatenation of all the segment objects. This means that you
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cannot copy objects larger than 5 GB.
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Note that the provider may have limited the characters which are allowed
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in an object name. Any name limits are exposed under the ``name_check`` key
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in the ``/info`` discoverability response. Regardless of ``name_check``
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limitations, names must be URL quoted UTF-8.
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To create custom metadata, use the
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``X-Object-Meta-name`` header, where ``name`` is the name of the metadata
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item.
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.. include:: metadata_header_syntax.inc
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Example requests and responses:
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- Create object:
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::
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curl -i $publicURL/janeausten/helloworld.txt -X PUT -d "Hello" -H "Content-Type: text/html; charset=UTF-8" -H "X-Auth-Token: $token"
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::
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HTTP/1.1 201 Created
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Last-Modified: Fri, 17 Jan 2014 17:28:35 GMT
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Content-Length: 0
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Etag: 8b1a9953c4611296a827abf8c47804d7
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Content-Type: text/html; charset=UTF-8
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X-Trans-Id: tx4d5e4f06d357462bb732f-0052d96843
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X-Openstack-Request-Id: tx4d5e4f06d357462bb732f-0052d96843
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Date: Fri, 17 Jan 2014 17:28:35 GMT
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- Replace object:
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::
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curl -i $publicURL/janeausten/helloworld.txt -X PUT -d "Hola" -H "X-Auth-Token: $token"
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::
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HTTP/1.1 201 Created
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Last-Modified: Fri, 17 Jan 2014 17:28:35 GMT
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Content-Length: 0
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Etag: f688ae26e9cfa3ba6235477831d5122e
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Content-Type: text/html; charset=UTF-8
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X-Trans-Id: tx4d5e4f06d357462bb732f-0052d96843
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X-Openstack-Request-Id: tx4d5e4f06d357462bb732f-0052d96843
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Date: Fri, 17 Jan 2014 17:28:35 GMT
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The ``Created (201)`` response code indicates a successful write.
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If the request times out, the operation returns the ``Request
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Timeout (408)`` response code.
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The ``Length Required (411)`` response code indicates a missing
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``Transfer-Encoding`` or ``Content-Length`` request header.
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If the MD5 checksum of the data that is written to the object store
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does not match the optional ``ETag`` value, the operation returns
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the ``Unprocessable Entity (422)`` response code.
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Error response codes:201,422,411,408,
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Request
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-------
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.. rest_parameters:: parameters.yaml
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- account: account
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- container: container
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- object: object
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- multipart-manifest: multipart-manifest_put
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- temp_url_sig: temp_url_sig
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- temp_url_expires: temp_url_expires
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- X-Object-Manifest: X-Object-Manifest
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- X-Auth-Token: X-Auth-Token
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- X-Service-Token: X-Service-Token
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- Content-Length: Content-Length_put_req
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- Transfer-Encoding: Transfer-Encoding
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- Content-Type: Content-Type_obj_cu_req
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- X-Detect-Content-Type: X-Detect-Content-Type
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- X-Copy-From: X-Copy-From
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- X-Copy-From-Account: X-Copy-From-Account
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- ETag: ETag_obj_req
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- Content-Disposition: Content-Disposition
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- Content-Encoding: Content-Encoding
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- X-Delete-At: X-Delete-At
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- X-Delete-After: X-Delete-After
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- X-Object-Meta-name: X-Object-Meta-name
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- If-None-Match: If-None-Match-put-request
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- X-Trans-Id-Extra: X-Trans-Id-Extra
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Response Parameters
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-------------------
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.. rest_parameters:: parameters.yaml
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- Content-Length: Content-Length_cud_resp
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- ETag: ETag_obj_received
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- X-Timestamp: X-Timestamp
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- X-Trans-Id: X-Trans-Id
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- X-Openstack-Request-Id: X-Openstack-Request-Id
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- Date: Date
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- Content-Type: Content-Type_obj_resp
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- last_modified: last_modified
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Copy object
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===========
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.. rest_method:: COPY /v1/{account}/{container}/{object}
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Copies an object to another object in the object store.
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You can copy an object to a new object with the same name. Copying
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to the same name is an alternative to using POST to add metadata to
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an object. With POST, you must specify all the metadata. With COPY,
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you can add additional metadata to the object.
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With COPY, you can set the ``X-Fresh-Metadata`` header to ``true``
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to copy the object without any existing metadata.
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Alternatively, you can use PUT with the ``X-Copy-From`` request
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header to accomplish the same operation as the COPY object
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operation.
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The COPY operation always creates an object. If you use this
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operation on an existing object, you replace the existing object
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and metadata rather than modifying the object. Consequently, this
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operation returns the ``Created (201)`` response code.
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Normally, if you use this operation to copy a manifest object, the new object
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is a normal object and not a copy of the manifest. Instead it is a
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concatenation of all the segment objects. This means that you
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cannot copy objects larger than 5 GB in size.
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To copy the manifest object, you include the
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``multipart-manifest=get`` query string in the COPY request.
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The new object contains the same manifest as the original.
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The segment objects are not copied. Instead, both the original
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and new manifest objects share the same set of segment objects.
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All metadata is
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preserved during the object copy. If you specify metadata on the
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request to copy the object, either PUT or COPY , the metadata
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overwrites any conflicting keys on the target (new) object.
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Example requests and responses:
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- Copy the ``goodbye`` object from the ``marktwain`` container to
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the ``janeausten`` container:
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::
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curl -i $publicURL/marktwain/goodbye -X COPY -H "X-Auth-Token: $token" -H "Destination: janeausten/goodbye"
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::
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HTTP/1.1 201 Created
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Content-Length: 0
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X-Copied-From-Last-Modified: Thu, 16 Jan 2014 21:19:45 GMT
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X-Copied-From: marktwain/goodbye
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Last-Modified: Fri, 17 Jan 2014 18:22:57 GMT
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Etag: 451e372e48e0f6b1114fa0724aa79fa1
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Content-Type: text/html; charset=UTF-8
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X-Object-Meta-Movie: AmericanPie
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X-Trans-Id: txdcb481ad49d24e9a81107-0052d97501
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X-Openstack-Request-Id: txdcb481ad49d24e9a81107-0052d97501
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Date: Fri, 17 Jan 2014 18:22:57 GMT
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- Alternatively, you can use PUT to copy the ``goodbye`` object from
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the ``marktwain`` container to the ``janeausten`` container. This
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request requires a ``Content-Length`` header, even if it is set
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to zero (0).
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::
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curl -i $publicURL/janeausten/goodbye -X PUT -H "X-Auth-Token: $token" -H "X-Copy-From: /marktwain/goodbye" -H "Content-Length: 0"
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::
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HTTP/1.1 201 Created
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Content-Length: 0
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X-Copied-From-Last-Modified: Thu, 16 Jan 2014 21:19:45 GMT
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X-Copied-From: marktwain/goodbye
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Last-Modified: Fri, 17 Jan 2014 18:22:57 GMT
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Etag: 451e372e48e0f6b1114fa0724aa79fa1
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Content-Type: text/html; charset=UTF-8
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X-Object-Meta-Movie: AmericanPie
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X-Trans-Id: txdcb481ad49d24e9a81107-0052d97501
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X-Openstack-Request-Id: txdcb481ad49d24e9a81107-0052d97501
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Date: Fri, 17 Jan 2014 18:22:57 GMT
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When several replicas exist, the system copies from the most recent
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replica. That is, the COPY operation behaves as though the
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``X-Newest`` header is in the request.
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Error response codes:201,
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Request
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-------
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.. rest_parameters:: parameters.yaml
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- account: account
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- container: container
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- object: object
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- multipart-manifest: multipart-manifest_copy
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- X-Auth-Token: X-Auth-Token
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- X-Service-Token: X-Service-Token
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- Destination: Destination
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- Destination-Account: Destination-Account
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- Content-Type: Content-Type_obj_cu_req
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- Content-Encoding: Content-Encoding
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- Content-Disposition: Content-Disposition
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- X-Object-Meta-name: X-Object-Meta-name
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- X-Fresh-Metadata: X-Fresh-Metadata
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- X-Trans-Id-Extra: X-Trans-Id-Extra
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Response Parameters
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-------------------
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.. rest_parameters:: parameters.yaml
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- Content-Length: Content-Length_cud_resp
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- X-Copied-From-Last-Modified: X-Copied-From-Last-Modified
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- X-Copied-From: X-Copied-From
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- X-Copied-From-Account: X-Copied-From-Account
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- Last-Modified: Last-Modified
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- ETag: ETag_obj_copied
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- X-Timestamp: X-Timestamp
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- X-Trans-Id: X-Trans-Id
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- X-Openstack-Request-Id: X-Openstack-Request-Id
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- Date: Date
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- Content-Type: Content-Type_obj_resp
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Delete object
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=============
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.. rest_method:: DELETE /v1/{account}/{container}/{object}
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Permanently deletes an object from the object store.
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Object deletion occurs immediately at request time. Any subsequent
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GET, HEAD, POST, or DELETE operations will return a ``404 Not Found``
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error code.
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For static large object manifests, you can add the ``?multipart-
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manifest=delete`` query parameter. This operation deletes the
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segment objects and, if all deletions succeed, this operation
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deletes the manifest object.
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An alternative to using the DELETE operation is to use
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the POST operation with the ``bulk-delete`` query parameter.
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Example request and response:
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- Delete the ``helloworld`` object from the ``marktwain`` container:
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::
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curl -i $publicURL/marktwain/helloworld -X DELETE -H "X-Auth-Token: $token"
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::
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HTTP/1.1 204 No Content
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Content-Length: 0
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Content-Type: text/html; charset=UTF-8
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X-Trans-Id: tx36c7606fcd1843f59167c-0052d6fdac
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X-Openstack-Request-Id: tx36c7606fcd1843f59167c-0052d6fdac
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Date: Wed, 15 Jan 2014 21:29:16 GMT
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Typically, the DELETE operation does not return a response body.
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However, with the ``multipart-manifest=delete`` query parameter,
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the response body contains a list of manifest and segment objects
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and the status of their DELETE operations.
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Error response codes:204,
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Request
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-------
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.. rest_parameters:: parameters.yaml
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- account: account
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- container: container
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- object: object
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- multipart-manifest: multipart-manifest_delete
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- X-Auth-Token: X-Auth-Token
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- X-Service-Token: X-Service-Token
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- X-Trans-Id-Extra: X-Trans-Id-Extra
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Response Parameters
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-------------------
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.. rest_parameters:: parameters.yaml
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- Date: Date
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- X-Timestamp: X-Timestamp
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- Content-Length: Content-Length_cud_resp
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- Content-Type: Content-Type_cud_resp
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- X-Trans-Id: X-Trans-Id
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- X-Openstack-Request-Id: X-Openstack-Request-Id
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Show object metadata
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====================
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.. rest_method:: HEAD /v1/{account}/{container}/{object}
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Shows object metadata.
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Example requests and responses:
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- Show object metadata:
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::
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curl $publicURL/marktwain/goodbye --head -H "X-Auth-Token: $token"
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::
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HTTP/1.1 200 OK
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Content-Length: 14
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Accept-Ranges: bytes
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Last-Modified: Thu, 16 Jan 2014 21:12:31 GMT
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Etag: 451e372e48e0f6b1114fa0724aa79fa1
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X-Timestamp: 1389906751.73463
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X-Object-Meta-Book: GoodbyeColumbus
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Content-Type: application/octet-stream
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X-Trans-Id: tx37ea34dcd1ed48ca9bc7d-0052d84b6f
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X-Openstack-Request-Id: tx37ea34dcd1ed48ca9bc7d-0052d84b6f
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Date: Thu, 16 Jan 2014 21:13:19 GMT
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Note: The ``--head`` option was used in the above example. If we had
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used ``-i -X HEAD`` and the ``Content-Length`` response header is non-zero,
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the cURL command stalls after it prints the response headers because it
|
|
is waiting for a response body. However, the Object Storage system
|
|
does not return a response body for the HEAD operation.
|
|
|
|
|
|
If the request succeeds, the operation returns the ``200`` response
|
|
code.
|
|
|
|
|
|
Normal response codes: 200
|
|
Error response codes:204,
|
|
|
|
|
|
Request
|
|
-------
|
|
|
|
.. rest_parameters:: parameters.yaml
|
|
|
|
- account: account
|
|
- container: container
|
|
- object: object
|
|
- X-Auth-Token: X-Auth-Token
|
|
- X-Service-Token: X-Service-Token
|
|
- temp_url_sig: temp_url_sig
|
|
- temp_url_expires: temp_url_expires
|
|
- filename: filename
|
|
- multipart-manifest: multipart-manifest_head
|
|
- X-Newest: X-Newest
|
|
- If-Match: If-Match
|
|
- If-None-Match: If-None-Match-get-request
|
|
- If-Modified-Since: If-Modified-Since
|
|
- If-Unmodified-Since: If-Unmodified-Since
|
|
- X-Trans-Id-Extra: X-Trans-Id-Extra
|
|
|
|
|
|
Response Parameters
|
|
-------------------
|
|
|
|
.. rest_parameters:: parameters.yaml
|
|
|
|
- Content-Length: Content-Length_obj_head_resp
|
|
- X-Object-Meta-name: X-Object-Meta-name
|
|
- Content-Disposition: Content-Disposition_resp
|
|
- Content-Encoding: Content-Encoding_resp
|
|
- X-Delete-At: X-Delete-At
|
|
- X-Object-Manifest: X-Object-Manifest_resp
|
|
- Last-Modified: Last-Modified
|
|
- ETag: ETag_obj_resp
|
|
- X-Timestamp: X-Timestamp
|
|
- X-Trans-Id: X-Trans-Id
|
|
- X-Openstack-Request-Id: X-Openstack-Request-Id
|
|
- Date: Date
|
|
- X-Static-Large-Object: X-Static-Large-Object
|
|
- Content-Type: Content-Type_obj_resp
|
|
|
|
|
|
|
|
Response Example
|
|
----------------
|
|
|
|
See examples above.
|
|
|
|
|
|
|
|
Create or update object metadata
|
|
================================
|
|
|
|
.. rest_method:: POST /v1/{account}/{container}/{object}
|
|
|
|
Creates or updates object metadata.
|
|
|
|
To create or update custom metadata, use the
|
|
``X-Object-Meta-name`` header, where ``name`` is the name of the metadata
|
|
item.
|
|
|
|
.. include:: metadata_header_syntax.inc
|
|
|
|
In addition to the custom metadata, you can update the
|
|
``Content-Type``, ``Content-Encoding``, ``Content-Disposition``, and
|
|
``X-Delete-At`` system metadata items. However you cannot update other
|
|
system metadata, such as ``Content-Length`` or ``Last-Modified``.
|
|
|
|
You can use COPY as an alternate to the POST operation by copying
|
|
to the same object. With the POST operation you must specify all
|
|
metadata items, whereas with the COPY operation, you need to
|
|
specify only changed or additional items.
|
|
All metadata is preserved during the object copy. If you specify
|
|
metadata on the request to copy the object, either PUT or COPY ,
|
|
the metadata overwrites any conflicting keys on the target (new)
|
|
object.
|
|
|
|
A POST request deletes any existing custom metadata that you added
|
|
with a previous PUT or POST request. Consequently, you must specify
|
|
all custom metadata in the request. However, system metadata is
|
|
unchanged by the POST request unless you explicitly supply it in a
|
|
request header.
|
|
|
|
You can also set the ``X-Delete-At`` or ``X-Delete-After`` header
|
|
to define when to expire the object.
|
|
|
|
When used as described in this section, the POST operation creates
|
|
or replaces metadata. This form of the operation has no request
|
|
body. There are alternate uses of the POST operation as follows:
|
|
|
|
- You can also use the `form POST feature
|
|
<http://docs.openstack.org/liberty/config-reference/content/object-
|
|
storage-form-post.html>`_ to upload objects.
|
|
|
|
- The POST operation when used with the ``bulk-delete`` query parameter
|
|
can be used to delete multiple objects and containers in a single
|
|
operation.
|
|
|
|
- The POST operation when used with the ``extract-archive`` query parameter
|
|
can be used to upload an archive (tar file). The archive is then extracted
|
|
to create objects.
|
|
|
|
Example requests and responses:
|
|
|
|
- Create object metadata:
|
|
|
|
::
|
|
|
|
curl -i $publicURL/marktwain/goodbye -X POST -H "X-Auth-Token: $token" -H "X-Object-Meta-Book: GoodbyeColumbus"
|
|
|
|
|
|
|
|
|
|
::
|
|
|
|
HTTP/1.1 202 Accepted
|
|
Content-Length: 76
|
|
Content-Type: text/html; charset=UTF-8
|
|
X-Trans-Id: txb5fb5c91ba1f4f37bb648-0052d84b3f
|
|
X-Openstack-Request-Id: txb5fb5c91ba1f4f37bb648-0052d84b3f
|
|
Date: Thu, 16 Jan 2014 21:12:31 GMT
|
|
<html>
|
|
<h1>Accepted
|
|
</h1>
|
|
<p>The request is accepted for processing.
|
|
</p>
|
|
</html>
|
|
|
|
|
|
- Update object metadata:
|
|
|
|
::
|
|
|
|
curl -i $publicURL/marktwain/goodbye -X POST -H "X-Auth-Token: $token" -H "X-Object-Meta-Book: GoodbyeOldFriend"
|
|
|
|
|
|
|
|
|
|
::
|
|
|
|
HTTP/1.1 202 Accepted
|
|
Content-Length: 76
|
|
Content-Type: text/html; charset=UTF-8
|
|
X-Trans-Id: tx5ec7ab81cdb34ced887c8-0052d84ca4
|
|
X-Openstack-Request-Id: tx5ec7ab81cdb34ced887c8-0052d84ca4
|
|
Date: Thu, 16 Jan 2014 21:18:28 GMT
|
|
<html>
|
|
<h1>Accepted
|
|
</h1>
|
|
<p>The request is accepted for processing.
|
|
</p>
|
|
</html>
|
|
|
|
Error response codes:202,
|
|
|
|
|
|
Request
|
|
-------
|
|
|
|
.. rest_parameters:: parameters.yaml
|
|
|
|
- account: account
|
|
- container: container
|
|
- object: object
|
|
- bulk-delete: bulk-delete
|
|
- extract-archive: extract-archive
|
|
- X-Auth-Token: X-Auth-Token
|
|
- X-Service-Token: X-Service-Token
|
|
- X-Object-Meta-name: X-Object-Meta-name
|
|
- X-Delete-At: X-Delete-At
|
|
- Content-Disposition: Content-Disposition
|
|
- Content-Encoding: Content-Encoding
|
|
- X-Delete-After: X-Delete-After
|
|
- Content-Type: Content-Type_obj_cu_req
|
|
- X-Trans-Id-Extra: X-Trans-Id-Extra
|
|
|
|
|
|
Response Parameters
|
|
-------------------
|
|
|
|
.. rest_parameters:: parameters.yaml
|
|
|
|
- Date: Date
|
|
- X-Timestamp: X-Timestamp
|
|
- Content-Length: Content-Length_cud_resp
|
|
- Content-Type: Content-Type_cud_resp
|
|
- X-Trans-Id: X-Trans-Id
|
|
- X-Openstack-Request-Id: X-Openstack-Request-Id
|
|
|
|
|
|
|
|
|