root / snf-cyclades-app / synnefo / vmapi / __init__.py @ 8e440b3a
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1 | 724e17a6 | Kostas Papadimitriou | # Copyright 2012 GRNET S.A. All rights reserved.
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2 | 724e17a6 | Kostas Papadimitriou | #
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3 | 724e17a6 | Kostas Papadimitriou | # Redistribution and use in source and binary forms, with or
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4 | 724e17a6 | Kostas Papadimitriou | # without modification, are permitted provided that the following
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5 | 724e17a6 | Kostas Papadimitriou | # conditions are met:
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6 | 724e17a6 | Kostas Papadimitriou | #
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7 | 724e17a6 | Kostas Papadimitriou | # 1. Redistributions of source code must retain the above
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8 | 724e17a6 | Kostas Papadimitriou | # copyright notice, this list of conditions and the following
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9 | 724e17a6 | Kostas Papadimitriou | # disclaimer.
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10 | 724e17a6 | Kostas Papadimitriou | #
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11 | 724e17a6 | Kostas Papadimitriou | # 2. Redistributions in binary form must reproduce the above
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12 | 724e17a6 | Kostas Papadimitriou | # copyright notice, this list of conditions and the following
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13 | 724e17a6 | Kostas Papadimitriou | # disclaimer in the documentation and/or other materials
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14 | 724e17a6 | Kostas Papadimitriou | # provided with the distribution.
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15 | 724e17a6 | Kostas Papadimitriou | #
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16 | 724e17a6 | Kostas Papadimitriou | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | 724e17a6 | Kostas Papadimitriou | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | 724e17a6 | Kostas Papadimitriou | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | 724e17a6 | Kostas Papadimitriou | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | 724e17a6 | Kostas Papadimitriou | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | 724e17a6 | Kostas Papadimitriou | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | 724e17a6 | Kostas Papadimitriou | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | 724e17a6 | Kostas Papadimitriou | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | 724e17a6 | Kostas Papadimitriou | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | 724e17a6 | Kostas Papadimitriou | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | 724e17a6 | Kostas Papadimitriou | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | 724e17a6 | Kostas Papadimitriou | # POSSIBILITY OF SUCH DAMAGE.
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28 | 724e17a6 | Kostas Papadimitriou | #
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29 | 724e17a6 | Kostas Papadimitriou | # The views and conclusions contained in the software and
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30 | 724e17a6 | Kostas Papadimitriou | # documentation are those of the authors and should not be
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31 | 724e17a6 | Kostas Papadimitriou | # interpreted as representing official policies, either expressed
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32 | 724e17a6 | Kostas Papadimitriou | # or implied, of GRNET S.A.
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33 | 724e17a6 | Kostas Papadimitriou | |
34 | 724e17a6 | Kostas Papadimitriou | from uuid import uuid4 |
35 | 724e17a6 | Kostas Papadimitriou | |
36 | 724e17a6 | Kostas Papadimitriou | from django.core.cache import get_cache |
37 | 724e17a6 | Kostas Papadimitriou | from django.core import signals |
38 | 724e17a6 | Kostas Papadimitriou | |
39 | 027e437a | Kostas Papadimitriou | from synnefo.vmapi.settings import CACHE_KEY_PREFIX, CACHE_BACKEND |
40 | 724e17a6 | Kostas Papadimitriou | |
41 | 68b952f9 | Christos Stavrakakis | |
42 | 724e17a6 | Kostas Papadimitriou | def get_uuid(): |
43 | 724e17a6 | Kostas Papadimitriou | return str(uuid4()) |
44 | 724e17a6 | Kostas Papadimitriou | |
45 | 68b952f9 | Christos Stavrakakis | |
46 | 724e17a6 | Kostas Papadimitriou | def get_key(*args): |
47 | 724e17a6 | Kostas Papadimitriou | args = map(str, filter(bool, list(args))) |
48 | 724e17a6 | Kostas Papadimitriou | args.insert(0, CACHE_KEY_PREFIX)
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49 | 724e17a6 | Kostas Papadimitriou | return "_".join(args) |
50 | 724e17a6 | Kostas Papadimitriou | |
51 | 724e17a6 | Kostas Papadimitriou | # initialize serverparams cache backend
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52 | 724e17a6 | Kostas Papadimitriou | backend = get_cache(CACHE_BACKEND) |
53 | 724e17a6 | Kostas Papadimitriou | |
54 | 724e17a6 | Kostas Papadimitriou | # Some caches -- pythont-memcached in particular -- need to do a cleanup at the
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55 | 724e17a6 | Kostas Papadimitriou | # end of a request cycle. If the cache provides a close() method, wire it up
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56 | 724e17a6 | Kostas Papadimitriou | # here.
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57 | 724e17a6 | Kostas Papadimitriou | if hasattr(backend, 'close'): |
58 | 724e17a6 | Kostas Papadimitriou | signals.request_finished.connect(backend.close) |