root / snf-django-lib / snf_django / lib / api / utils.py @ fde7b7cb
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1 | 72bf812d | Christos Stavrakakis | # Copyright 2011-2013 GRNET S.A. All rights reserved.
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2 | 72bf812d | Christos Stavrakakis | #
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3 | 72bf812d | Christos Stavrakakis | # Redistribution and use in source and binary forms, with or
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4 | 72bf812d | Christos Stavrakakis | # without modification, are permitted provided that the following
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5 | 72bf812d | Christos Stavrakakis | # conditions are met:
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6 | 72bf812d | Christos Stavrakakis | #
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7 | 72bf812d | Christos Stavrakakis | # 1. Redistributions of source code must retain the above
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8 | 72bf812d | Christos Stavrakakis | # copyright notice, this list of conditions and the following
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9 | 72bf812d | Christos Stavrakakis | # disclaimer.
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10 | 72bf812d | Christos Stavrakakis | #
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11 | 72bf812d | Christos Stavrakakis | # 2. Redistributions in binary form must reproduce the above
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12 | 72bf812d | Christos Stavrakakis | # copyright notice, this list of conditions and the following
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13 | 72bf812d | Christos Stavrakakis | # disclaimer in the documentation and/or other materials
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14 | 72bf812d | Christos Stavrakakis | # provided with the distribution.
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15 | 72bf812d | Christos Stavrakakis | #
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16 | 72bf812d | Christos Stavrakakis | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | 72bf812d | Christos Stavrakakis | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | 72bf812d | Christos Stavrakakis | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | 72bf812d | Christos Stavrakakis | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | 72bf812d | Christos Stavrakakis | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | 72bf812d | Christos Stavrakakis | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | 72bf812d | Christos Stavrakakis | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | 72bf812d | Christos Stavrakakis | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | 72bf812d | Christos Stavrakakis | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | 72bf812d | Christos Stavrakakis | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | 72bf812d | Christos Stavrakakis | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | 72bf812d | Christos Stavrakakis | # POSSIBILITY OF SUCH DAMAGE.
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28 | 72bf812d | Christos Stavrakakis | #
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29 | 72bf812d | Christos Stavrakakis | # The views and conclusions contained in the software and
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30 | 72bf812d | Christos Stavrakakis | # documentation are those of the authors and should not be
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31 | 72bf812d | Christos Stavrakakis | # interpreted as representing official policies, either expressed
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32 | 72bf812d | Christos Stavrakakis | # or implied, of GRNET S.A.
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33 | 72bf812d | Christos Stavrakakis | |
34 | 72bf812d | Christos Stavrakakis | import datetime |
35 | 72bf812d | Christos Stavrakakis | from dateutil.parser import parse as date_parse |
36 | 72bf812d | Christos Stavrakakis | from django.utils import simplejson as json |
37 | 72bf812d | Christos Stavrakakis | |
38 | 72bf812d | Christos Stavrakakis | from django.conf import settings |
39 | 72bf812d | Christos Stavrakakis | from snf_django.lib.api import faults |
40 | 72bf812d | Christos Stavrakakis | |
41 | 72bf812d | Christos Stavrakakis | |
42 | 72bf812d | Christos Stavrakakis | class UTC(datetime.tzinfo): |
43 | 72bf812d | Christos Stavrakakis | """
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44 | 72bf812d | Christos Stavrakakis | Helper UTC time information object.
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45 | 72bf812d | Christos Stavrakakis | """
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46 | 72bf812d | Christos Stavrakakis | |
47 | 72bf812d | Christos Stavrakakis | def utcoffset(self, dt): |
48 | 72bf812d | Christos Stavrakakis | return datetime.timedelta(0) |
49 | 72bf812d | Christos Stavrakakis | |
50 | 72bf812d | Christos Stavrakakis | def tzname(self, dt): |
51 | 72bf812d | Christos Stavrakakis | return 'UTC' |
52 | 72bf812d | Christos Stavrakakis | |
53 | 72bf812d | Christos Stavrakakis | def dst(self, dt): |
54 | 72bf812d | Christos Stavrakakis | return datetime.timedelta(0) |
55 | 72bf812d | Christos Stavrakakis | |
56 | 72bf812d | Christos Stavrakakis | |
57 | 72bf812d | Christos Stavrakakis | def isoformat(d): |
58 | 72bf812d | Christos Stavrakakis | """Return an ISO8601 date string that includes a timezone.
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59 | 72bf812d | Christos Stavrakakis |
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60 | 72bf812d | Christos Stavrakakis | >>> from datetime import datetime
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61 | 72bf812d | Christos Stavrakakis | >>> d = datetime(2012, 8, 10, 00, 59, 59)
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62 | 72bf812d | Christos Stavrakakis | >>> isoformat(d)
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63 | 72bf812d | Christos Stavrakakis | '2012-08-10T00:59:59+00:00'
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64 | 72bf812d | Christos Stavrakakis | """
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65 | 72bf812d | Christos Stavrakakis | |
66 | 72bf812d | Christos Stavrakakis | return d.replace(tzinfo=UTC()).isoformat()
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67 | 72bf812d | Christos Stavrakakis | |
68 | 72bf812d | Christos Stavrakakis | |
69 | 72bf812d | Christos Stavrakakis | def isoparse(s): |
70 | 72bf812d | Christos Stavrakakis | """Parse an ISO8601 date string into a datetime object."""
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71 | 72bf812d | Christos Stavrakakis | |
72 | 72bf812d | Christos Stavrakakis | if not s: |
73 | 72bf812d | Christos Stavrakakis | return None |
74 | 72bf812d | Christos Stavrakakis | |
75 | 72bf812d | Christos Stavrakakis | try:
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76 | 72bf812d | Christos Stavrakakis | since = date_parse(s) |
77 | 72bf812d | Christos Stavrakakis | utc_since = since.astimezone(UTC()).replace(tzinfo=None)
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78 | 72bf812d | Christos Stavrakakis | except ValueError: |
79 | 72bf812d | Christos Stavrakakis | raise faults.BadRequest('Invalid changes-since parameter.') |
80 | 72bf812d | Christos Stavrakakis | |
81 | 72bf812d | Christos Stavrakakis | now = datetime.datetime.now() |
82 | 72bf812d | Christos Stavrakakis | if utc_since > now:
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83 | 72bf812d | Christos Stavrakakis | raise faults.BadRequest('changes-since value set in the future.') |
84 | 72bf812d | Christos Stavrakakis | |
85 | 72bf812d | Christos Stavrakakis | if now - utc_since > datetime.timedelta(seconds=settings.POLL_LIMIT):
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86 | 72bf812d | Christos Stavrakakis | raise faults.BadRequest('Too old changes-since value.') |
87 | 72bf812d | Christos Stavrakakis | |
88 | 72bf812d | Christos Stavrakakis | return utc_since
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89 | 72bf812d | Christos Stavrakakis | |
90 | 72bf812d | Christos Stavrakakis | |
91 | 72bf812d | Christos Stavrakakis | def get_request_dict(request): |
92 | 72bf812d | Christos Stavrakakis | """Return data sent by the client as python dictionary.
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93 | 72bf812d | Christos Stavrakakis |
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94 | 72bf812d | Christos Stavrakakis | Only JSON format is supported
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95 | 72bf812d | Christos Stavrakakis |
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96 | 72bf812d | Christos Stavrakakis | """
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97 | 72bf812d | Christos Stavrakakis | data = request.raw_post_data |
98 | 72bf812d | Christos Stavrakakis | content_type = request.META.get("CONTENT_TYPE")
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99 | 72bf812d | Christos Stavrakakis | if content_type.startswith("application/json"): |
100 | 72bf812d | Christos Stavrakakis | try:
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101 | 72bf812d | Christos Stavrakakis | return json.loads(data)
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102 | 72bf812d | Christos Stavrakakis | except ValueError: |
103 | 72bf812d | Christos Stavrakakis | raise faults.BadRequest("Invalid JSON data") |
104 | 72bf812d | Christos Stavrakakis | else:
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105 | 72bf812d | Christos Stavrakakis | raise faults.BadRequest("Unsupported Content-type: '%s'", content_type) |