Extent Representation¶
Extends None
An Extent represents a part of a file with an offset and size, or potentially the contents of a complete file, as referenced by an Exnode.
JSON Schema¶
See http://unis.crest.iu.edu/schema/exnode/6/extent.
Attributes¶
The following table contains only the Extent required attributes.
| Name | Value | Description |
|---|---|---|
| id | string | The Extent identifier. |
| selfRef | string | Self hyperlink reference for the Extent. |
| location | string | The URI of a service maintaining the Extent data |
| size | integer | Size of the data in bytes. |
| offset | integer | Offset of this Extent in bytes relative to the complete file. |
| parent | string | Pointer to the parent Exnode, null if adrift. |
| index | integer | Relative index of an Extent |
Example::¶
The following is an Extent resource example:
{
"index": 0,
"selfRef": "http://dev.crest.iu.edu:8888/extents/0d3636f2-b899-467c-9e82-f71948f35ca9",
"parent": {
"href": "http://dev.crest.iu.edu:8888/exnodes/183f1037-7a92-4390-85c2-67834dda413c",
"rel": "full"
},
"$schema": "http://unis.crest.iu.edu/schema/exnode/6/extent#",
"ts": 1493065035129230,
"location": "ftp:///10.10.1.1:8080/0d3636f2-b899-467c-9e82-f71948f35ca9",
"offset": 377487360,
"id": "0d3636f2-b899-467c-9e82-f71948f35ca9",
"size": 20971520
}
Actions¶
TBD