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113 lines
4.0 KiB
Python
113 lines
4.0 KiB
Python
# Copyright 2010 Google Inc.
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# Copyright (c) 2011, Nexenta Systems Inc.
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish, dis-
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# tribute, sublicense, and/or sell copies of the Software, and to permit
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# persons to whom the Software is furnished to do so, subject to the fol-
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# lowing conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
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# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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# File representation of bucket, for use with "file://" URIs.
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import os
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from key import Key
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from boto.file.simpleresultset import SimpleResultSet
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from boto.s3.bucketlistresultset import BucketListResultSet
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class Bucket(object):
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def __init__(self, name, contained_key):
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"""Instantiate an anonymous file-based Bucket around a single key.
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"""
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self.name = name
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self.contained_key = contained_key
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def __iter__(self):
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return iter(BucketListResultSet(self))
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def __str__(self):
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return 'anonymous bucket for file://' + self.contained_key
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def delete_key(self, key_name, headers=None,
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version_id=None, mfa_token=None):
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"""
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Deletes a key from the bucket.
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:type key_name: string
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:param key_name: The key name to delete
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:type version_id: string
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:param version_id: Unused in this subclass.
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:type mfa_token: tuple or list of strings
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:param mfa_token: Unused in this subclass.
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"""
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os.remove(key_name)
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def get_all_keys(self, headers=None, **params):
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"""
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This method returns the single key around which this anonymous Bucket
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was instantiated.
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:rtype: SimpleResultSet
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:return: The result from file system listing the keys requested
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"""
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key = Key(self.name, self.contained_key)
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return SimpleResultSet([key])
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def get_key(self, key_name, headers=None, version_id=None,
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key_type=Key.KEY_REGULAR_FILE):
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"""
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Check to see if a particular key exists within the bucket.
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Returns: An instance of a Key object or None
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:type key_name: string
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:param key_name: The name of the key to retrieve
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:type version_id: string
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:param version_id: Unused in this subclass.
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:type stream_type: integer
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:param stream_type: Type of the Key - Regular File or input/output Stream
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:rtype: :class:`boto.file.key.Key`
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:returns: A Key object from this bucket.
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"""
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if key_name == '-':
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return Key(self.name, '-', key_type=Key.KEY_STREAM_READABLE)
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else:
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fp = open(key_name, 'rb')
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return Key(self.name, key_name, fp)
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def new_key(self, key_name=None, key_type=Key.KEY_REGULAR_FILE):
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"""
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Creates a new key
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:type key_name: string
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:param key_name: The name of the key to create
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:rtype: :class:`boto.file.key.Key`
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:returns: An instance of the newly created key object
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"""
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if key_name == '-':
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return Key(self.name, '-', key_type=Key.KEY_STREAM_WRITABLE)
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else:
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dir_name = os.path.dirname(key_name)
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if dir_name and not os.path.exists(dir_name):
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os.makedirs(dir_name)
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fp = open(key_name, 'wb')
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return Key(self.name, key_name, fp)
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