root / kamaki / clients / storage.py @ bfeb2d9c
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1 | a1c50326 | Giorgos Verigakis | # Copyright 2011 GRNET S.A. All rights reserved.
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2 | a1c50326 | Giorgos Verigakis | #
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3 | a1c50326 | Giorgos Verigakis | # Redistribution and use in source and binary forms, with or
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4 | a1c50326 | Giorgos Verigakis | # without modification, are permitted provided that the following
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5 | a1c50326 | Giorgos Verigakis | # conditions are met:
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6 | a1c50326 | Giorgos Verigakis | #
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7 | a1c50326 | Giorgos Verigakis | # 1. Redistributions of source code must retain the above
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8 | a1c50326 | Giorgos Verigakis | # copyright notice, this list of conditions and the following
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9 | a1c50326 | Giorgos Verigakis | # disclaimer.
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10 | a1c50326 | Giorgos Verigakis | #
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11 | a1c50326 | Giorgos Verigakis | # 2. Redistributions in binary form must reproduce the above
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12 | a1c50326 | Giorgos Verigakis | # copyright notice, this list of conditions and the following
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13 | a1c50326 | Giorgos Verigakis | # disclaimer in the documentation and/or other materials
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14 | a1c50326 | Giorgos Verigakis | # provided with the distribution.
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15 | a1c50326 | Giorgos Verigakis | #
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16 | a1c50326 | Giorgos Verigakis | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | a1c50326 | Giorgos Verigakis | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | a1c50326 | Giorgos Verigakis | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | a1c50326 | Giorgos Verigakis | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | a1c50326 | Giorgos Verigakis | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | a1c50326 | Giorgos Verigakis | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | a1c50326 | Giorgos Verigakis | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | a1c50326 | Giorgos Verigakis | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | a1c50326 | Giorgos Verigakis | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | a1c50326 | Giorgos Verigakis | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | a1c50326 | Giorgos Verigakis | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | a1c50326 | Giorgos Verigakis | # POSSIBILITY OF SUCH DAMAGE.
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28 | a1c50326 | Giorgos Verigakis | #
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29 | a1c50326 | Giorgos Verigakis | # The views and conclusions contained in the software and
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30 | a1c50326 | Giorgos Verigakis | # documentation are those of the authors and should not be
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31 | a1c50326 | Giorgos Verigakis | # interpreted as representing official policies, either expressed
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32 | a1c50326 | Giorgos Verigakis | # or implied, of GRNET S.A.
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33 | a1c50326 | Giorgos Verigakis | |
34 | df79206f | Giorgos Verigakis | from . import Client, ClientError
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35 | a1c50326 | Giorgos Verigakis | |
36 | a1c50326 | Giorgos Verigakis | |
37 | df79206f | Giorgos Verigakis | class StorageClient(Client): |
38 | d2cea1e2 | Giorgos Verigakis | """OpenStack Object Storage API 1.0 client"""
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39 | d2cea1e2 | Giorgos Verigakis | |
40 | df79206f | Giorgos Verigakis | def __init__(self, base_url, token, account=None, container=None): |
41 | df79206f | Giorgos Verigakis | super(StorageClient, self).__init__(base_url, token) |
42 | df79206f | Giorgos Verigakis | self.account = account
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43 | df79206f | Giorgos Verigakis | self.container = container
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44 | d2cea1e2 | Giorgos Verigakis | |
45 | df79206f | Giorgos Verigakis | def assert_account(self): |
46 | df79206f | Giorgos Verigakis | if not self.account: |
47 | df79206f | Giorgos Verigakis | raise ClientError("Please provide an account") |
48 | d2cea1e2 | Giorgos Verigakis | |
49 | df79206f | Giorgos Verigakis | def assert_container(self): |
50 | df79206f | Giorgos Verigakis | self.assert_account()
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51 | df79206f | Giorgos Verigakis | if not self.container: |
52 | df79206f | Giorgos Verigakis | raise ClientError("Please provide a container") |
53 | d2cea1e2 | Giorgos Verigakis | |
54 | 60560d7c | Giorgos Verigakis | def create_container(self, container): |
55 | df79206f | Giorgos Verigakis | self.assert_account()
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56 | 60560d7c | Giorgos Verigakis | path = '/%s/%s' % (self.account, container) |
57 | df79206f | Giorgos Verigakis | r = self.put(path, success=(201, 202)) |
58 | df79206f | Giorgos Verigakis | if r.status_code == 202: |
59 | df79206f | Giorgos Verigakis | raise ClientError("Container already exists") |
60 | 60560d7c | Giorgos Verigakis | |
61 | df79206f | Giorgos Verigakis | def get_container_meta(self, container): |
62 | df79206f | Giorgos Verigakis | self.assert_account()
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63 | df79206f | Giorgos Verigakis | path = '/%s/%s' % (self.account, container) |
64 | df79206f | Giorgos Verigakis | r = self.head(path, success=(204, 404)) |
65 | df79206f | Giorgos Verigakis | if r.status_code == 404: |
66 | df79206f | Giorgos Verigakis | raise ClientError("Container does not exist", r.status_code) |
67 | df79206f | Giorgos Verigakis | |
68 | d2cea1e2 | Giorgos Verigakis | reply = {} |
69 | d2cea1e2 | Giorgos Verigakis | prefix = 'x-container-'
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70 | df79206f | Giorgos Verigakis | for key, val in r.headers.items(): |
71 | d2cea1e2 | Giorgos Verigakis | key = key.lower() |
72 | d2cea1e2 | Giorgos Verigakis | if key.startswith(prefix):
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73 | d2cea1e2 | Giorgos Verigakis | reply[key[len(prefix):]] = val
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74 | df79206f | Giorgos Verigakis | |
75 | d2cea1e2 | Giorgos Verigakis | return reply
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76 | a1c50326 | Giorgos Verigakis | |
77 | 810d80b8 | Giorgos Verigakis | def create_object(self, object, f, size=None, hash_cb=None, |
78 | 810d80b8 | Giorgos Verigakis | upload_cb=None):
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79 | df79206f | Giorgos Verigakis | # This is a naive implementation, it loads the whole file in memory
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80 | df79206f | Giorgos Verigakis | self.assert_container()
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81 | a1c50326 | Giorgos Verigakis | path = '/%s/%s/%s' % (self.account, self.container, object) |
82 | 810d80b8 | Giorgos Verigakis | data = f.read(size) if size is not None else f.read() |
83 | df79206f | Giorgos Verigakis | self.put(path, data=data, success=201) |
84 | df79206f | Giorgos Verigakis | |
85 | 176894c1 | Giorgos Verigakis | def get_object(self, object): |
86 | df79206f | Giorgos Verigakis | self.assert_container()
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87 | 176894c1 | Giorgos Verigakis | path = '/%s/%s/%s' % (self.account, self.container, object) |
88 | a591a7b4 | Giorgos Verigakis | r = self.get(path, raw=True, success=200) |
89 | df79206f | Giorgos Verigakis | size = int(r.headers['content-length']) |
90 | df79206f | Giorgos Verigakis | return r.raw, size
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91 | df79206f | Giorgos Verigakis | |
92 | a1c50326 | Giorgos Verigakis | def delete_object(self, object): |
93 | df79206f | Giorgos Verigakis | self.assert_container()
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94 | a1c50326 | Giorgos Verigakis | path = '/%s/%s/%s' % (self.account, self.container, object) |
95 | df79206f | Giorgos Verigakis | self.delete(path, success=204) |
96 | a591a7b4 | Giorgos Verigakis | |
97 | a591a7b4 | Giorgos Verigakis | def list_objects(self, path=''): |
98 | a591a7b4 | Giorgos Verigakis | self.assert_container()
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99 | a591a7b4 | Giorgos Verigakis | path = '/%s/%s' % (self.account, self.container) |
100 | a591a7b4 | Giorgos Verigakis | params = dict(format='json') |
101 | a591a7b4 | Giorgos Verigakis | r = self.get(path, params=params, success=(200, 204)) |
102 | a591a7b4 | Giorgos Verigakis | return r.json |