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