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    "info": {
        "author": "Ben O'Steen, Friedrich Lindenberg, Rufus Pollock",
        "author_email": "bosteen@gmail.com",
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        "description": "OFS is a bucket/object storage library.\n\nIt provides a common API for storing bitstreams (plus related metadata) in\n'bucket/object' stores such as:\n\n  * S3, Google Storage, Eucalytus, Archive.org\n  * Filesystem (via pairtree)\n  * 'REST' Store (see remote/reststore.py - implementation at http://bitbucket.org/pudo/repod/)\n  * Riak (buggy)\n  * **add a backend here** - just implement the methods in base.py\n\nWhy use the library:\n\n  * Abstraction: write common code but use different storage backends\n  * More than a filesystem, less than a database - support for metadata as well as bitstreams\n\nRequirements\n============\n\nFor all boto-based stores (Google Storage, S3 etc) require boto>=2.0.\n\nExample Usage\n=============\n\n(local version - depends on 'pairtree', and 'simplejson')::\n\n    >>> from ofs.local import PTOFS\n\n    >>> o = PTOFS()\n    (Equivalent to 'o = PTOFS(storage_dir = \"data\", uri_base=\"urn:uuid:\", hashing_type=\"md5\")')\n\n    # Claim a bucket - this will add the bucket to the list of existing ones\n    >>> uuid_id = o.claim_bucket()\n    >>> uuid_id\n    '4aaa43cdf5ba44e2ad25acdbd1cf2f70'\n\n    # Choose a bucket name - if it exists, a new UUID one will be formed instead and returned\n    >>> bucket_id = o.claim_bucket(\"foo\")\n    >>> bucket_id\n    'foo'\n    >>> bucket_id = o.claim_bucket(\"foo\")\n    >>> bucket_id\n    '1bf93208521545879e79c13614cd12f0'\n\n    # Store a file:\n    >>> o.put_stream(bucket_id, \"foo.txt\", open(\"foo....))\n    {'_label': 'foo.txt', '_content_length': 10, '_checksum': 'md5:10feda25f8da2e2ebfbe646eea351224', '_last_modified': '2010-08-02T11:37:21', '_creation_date': '2010-08-02T11:37:21'}\n\n    # or:\n    >>> o.put_stream(bucket_id, \"foo.txt\", \"asidaisdiasjdiajsidjasidji\")\n    {'_label': 'foo.txt', '_content_length': 10, '_checksum': 'md5:10feda25f8da2e2ebfbe646eea351224', '_last_modified': '2010-08-02T11:37:21', '_creation_date': '2010-08-02T11:37:21'}\n\n    # adding a file with some parameters:\n    >>> o.put_stream(bucket_id, \"foooo\", \"asidaisdiasjdiajsidjasidji\", params={\"original_uri\":\"http://....\"})\n    {'_label': 'foooo', 'original_uri': 'http://....', '_last_modified': '2010-08-02T11:39:11', '_checksum': 'md5:3d690d7e0f4479c5a7038b8a4572d0fe', '_creation_date': '2010-08-02T11:39:11', '_content_length': 26}\n\n    # Get the underlying URL pointing to a resource\n    >>> o.get_url(bucket_id, \"foo\")\n      [typical local pairtree response:]\n   \"file:///opt/ofs_store/pairtree_root/1b/f9/32/......./obj/foo\"\n      [typical remote response]\n   \"http://...\"\n   \"ftp://...\"\n\n    # adding to existing metadata:\n    >>> o.update_metadata(bucket_id, \"foooo\", {'foo':'bar'})\n    {'_label': 'foooo', 'original_uri': 'http://....', '_last_modified': '2010-08-02T11:39:11', '_checksum': 'md5:3d690d7e0f4479c5a7038b8a4572d0fe', '_creation_date': '2010-08-02T11:39:11', '_content_length': 26, 'foo': 'bar'}\n\n    # Remove keys\n    >>> o.remove_metadata_keys(bucket_id, \"foooo\", ['foo'])\n    {'_label': 'foooo', 'original_uri': 'http://....', '_last_modified': '2010-08-02T11:39:11', '_checksum': 'md5:3d690d7e0f4479c5a7038b8a4572d0fe', '_creation_date': '2010-08-02T11:39:11', '_content_length': 26}\n\n    # Delete blob\n    >>> o.exists(bucket_id, \"foooo\")\n    True\n    >>> o.del_stream(bucket_id, \"foooo\")\n    >>> o.exists(bucket_id, \"foooo\")\n    False\n\n    # Iterate through ids for buckets held:\n    >>> for item in o.list_buckets():\n    ...   print(item)\n    ... \n    447536aa0f1b411089d12399738ede8e\n    4a726b0a33974480a2a26d34fa0d494d\n    4aaa43cdf5ba44e2ad25acdbd1cf2f70\n    .... etc\n    \n    # Display the labels in a specific bucket:\n    >>>o.list_labels(\"1bf93208521545879e79c13614cd12f0\")\n    [u'foo.txt']\n\nDeveloper\n=========\n\nTests use plain unittest but recommend using nose.\n\nTo run the botostore tests you'll need to copy test.ini.tmpl to test.ini and\nput in details for a google storage account.\n\n\nChangelog\n=========\n\nv0.4.1: 2011-08-13\n------------------\n\n  * Set checksum (md5) based on etag (botostore backends) if not set\n\nv0.4: 2011-04-28\n----------------\n\n  * New authenticate_request method for boto based backends.\n  * Improved update_medata in botostore (no need to download and re-upload).\n\nv0.3: 2011-01-20\n----------------\n\n  * S3Bounce backend (use authorization credentials from CKAN).\n  * Use setuptools plugins with ofs.backend to allow for 3rd party backends\n  * ofs_upload command\n\nv0.2: 2010-11-20\n----------------\n\n  * Google Storage support.\n  * REST store\n\nv0.1: 2010-10-14\n----------------\n\n  * Initial implemenation with PairTree and S3\n",
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