root / snf-cyclades-app / synnefo / api / util.py @ dca7553e
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1 | 6ef51e9f | Giorgos Verigakis | # Copyright 2011-2012 GRNET S.A. All rights reserved.
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2 | d1387ed7 | Christodoulos Psaltis | #
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3 | adee02b8 | Giorgos Verigakis | # Redistribution and use in source and binary forms, with or
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4 | adee02b8 | Giorgos Verigakis | # without modification, are permitted provided that the following
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5 | adee02b8 | Giorgos Verigakis | # conditions are met:
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6 | d1387ed7 | Christodoulos Psaltis | #
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7 | adee02b8 | Giorgos Verigakis | # 1. Redistributions of source code must retain the above
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8 | adee02b8 | Giorgos Verigakis | # copyright notice, this list of conditions and the following
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9 | adee02b8 | Giorgos Verigakis | # disclaimer.
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10 | d1387ed7 | Christodoulos Psaltis | #
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11 | adee02b8 | Giorgos Verigakis | # 2. Redistributions in binary form must reproduce the above
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12 | adee02b8 | Giorgos Verigakis | # copyright notice, this list of conditions and the following
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13 | adee02b8 | Giorgos Verigakis | # disclaimer in the documentation and/or other materials
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14 | adee02b8 | Giorgos Verigakis | # provided with the distribution.
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15 | d1387ed7 | Christodoulos Psaltis | #
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16 | adee02b8 | Giorgos Verigakis | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | adee02b8 | Giorgos Verigakis | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | adee02b8 | Giorgos Verigakis | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | adee02b8 | Giorgos Verigakis | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | adee02b8 | Giorgos Verigakis | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | adee02b8 | Giorgos Verigakis | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | adee02b8 | Giorgos Verigakis | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | adee02b8 | Giorgos Verigakis | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | adee02b8 | Giorgos Verigakis | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | adee02b8 | Giorgos Verigakis | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | adee02b8 | Giorgos Verigakis | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | adee02b8 | Giorgos Verigakis | # POSSIBILITY OF SUCH DAMAGE.
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28 | d1387ed7 | Christodoulos Psaltis | #
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29 | adee02b8 | Giorgos Verigakis | # The views and conclusions contained in the software and
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30 | adee02b8 | Giorgos Verigakis | # documentation are those of the authors and should not be
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31 | adee02b8 | Giorgos Verigakis | # interpreted as representing official policies, either expressed
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32 | adee02b8 | Giorgos Verigakis | # or implied, of GRNET S.A.
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33 | 7e2f9d4b | Giorgos Verigakis | |
34 | c738c935 | Giorgos Verigakis | import datetime |
35 | c738c935 | Giorgos Verigakis | |
36 | dca7553e | Christos Stavrakakis | from base64 import b64encode, b64decode |
37 | d8e50a39 | Giorgos Verigakis | from datetime import timedelta, tzinfo |
38 | d8e50a39 | Giorgos Verigakis | from functools import wraps |
39 | c738c935 | Giorgos Verigakis | from hashlib import sha256 |
40 | 2035039b | Giorgos Verigakis | from logging import getLogger |
41 | d8e50a39 | Giorgos Verigakis | from random import choice |
42 | dca2a31f | Giorgos Verigakis | from string import digits, lowercase, uppercase |
43 | 8b01f7f3 | Giorgos Verigakis | from time import time |
44 | d8e50a39 | Giorgos Verigakis | from traceback import format_exc |
45 | 8b01f7f3 | Giorgos Verigakis | from wsgiref.handlers import format_date_time |
46 | 7e2f9d4b | Giorgos Verigakis | |
47 | 2035039b | Giorgos Verigakis | import dateutil.parser |
48 | 2035039b | Giorgos Verigakis | |
49 | c738c935 | Giorgos Verigakis | from Crypto.Cipher import AES |
50 | 529178b1 | Giorgos Verigakis | |
51 | d8e50a39 | Giorgos Verigakis | from django.conf import settings |
52 | 7e2f9d4b | Giorgos Verigakis | from django.http import HttpResponse |
53 | 7e2f9d4b | Giorgos Verigakis | from django.template.loader import render_to_string |
54 | 29a59bc1 | Giorgos Verigakis | from django.utils import simplejson as json |
55 | b75555e5 | Giorgos Verigakis | from django.utils.cache import add_never_cache_headers |
56 | d3406fbc | Christos Stavrakakis | from django.db.models import Q |
57 | 7e2f9d4b | Giorgos Verigakis | |
58 | b36f78fa | Giorgos Verigakis | from synnefo.api.faults import (Fault, BadRequest, BuildInProgress, |
59 | 6dd70a5c | Christos Stavrakakis | ItemNotFound, ServiceUnavailable, Unauthorized, |
60 | dca7553e | Christos Stavrakakis | BadMediaType, Forbidden, OverLimit) |
61 | 6ef51e9f | Giorgos Verigakis | from synnefo.db.models import (Flavor, VirtualMachine, VirtualMachineMetadata, |
62 | 7fede91e | Christos Stavrakakis | Network, BackendNetwork, NetworkInterface, |
63 | af6a3bc5 | Christos Stavrakakis | BridgePoolTable, MacPrefixPoolTable) |
64 | adc46059 | Christos Stavrakakis | from synnefo.db.pools import EmptyPool |
65 | 6dd70a5c | Christos Stavrakakis | |
66 | 4b3b8688 | Giorgos Verigakis | from synnefo.lib.astakos import get_user |
67 | 3a9b3cde | Giorgos Verigakis | from synnefo.plankton.backend import ImageBackend |
68 | b14725eb | Christos Stavrakakis | from synnefo.settings import MAX_CIDR_BLOCK |
69 | 9e98ba3c | Giorgos Verigakis | |
70 | 9e98ba3c | Giorgos Verigakis | |
71 | 9e98ba3c | Giorgos Verigakis | log = getLogger('synnefo.api')
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72 | 9e98ba3c | Giorgos Verigakis | |
73 | 7e2f9d4b | Giorgos Verigakis | |
74 | d8e50a39 | Giorgos Verigakis | class UTC(tzinfo): |
75 | d8e50a39 | Giorgos Verigakis | def utcoffset(self, dt): |
76 | d8e50a39 | Giorgos Verigakis | return timedelta(0) |
77 | aa197ee4 | Vangelis Koukis | |
78 | d8e50a39 | Giorgos Verigakis | def tzname(self, dt): |
79 | d8e50a39 | Giorgos Verigakis | return 'UTC' |
80 | aa197ee4 | Vangelis Koukis | |
81 | d8e50a39 | Giorgos Verigakis | def dst(self, dt): |
82 | d8e50a39 | Giorgos Verigakis | return timedelta(0) |
83 | 7e2f9d4b | Giorgos Verigakis | |
84 | 7e2f9d4b | Giorgos Verigakis | |
85 | d8e50a39 | Giorgos Verigakis | def isoformat(d): |
86 | 529178b1 | Giorgos Verigakis | """Return an ISO8601 date string that includes a timezone."""
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87 | aa197ee4 | Vangelis Koukis | |
88 | d8e50a39 | Giorgos Verigakis | return d.replace(tzinfo=UTC()).isoformat()
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89 | d8e50a39 | Giorgos Verigakis | |
90 | a08e4270 | Vangelis Koukis | |
91 | d8e50a39 | Giorgos Verigakis | def isoparse(s): |
92 | d8e50a39 | Giorgos Verigakis | """Parse an ISO8601 date string into a datetime object."""
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93 | aa197ee4 | Vangelis Koukis | |
94 | d8e50a39 | Giorgos Verigakis | if not s: |
95 | d8e50a39 | Giorgos Verigakis | return None |
96 | aa197ee4 | Vangelis Koukis | |
97 | d8e50a39 | Giorgos Verigakis | try:
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98 | d8e50a39 | Giorgos Verigakis | since = dateutil.parser.parse(s) |
99 | e87d30f3 | Giorgos Verigakis | utc_since = since.astimezone(UTC()).replace(tzinfo=None)
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100 | d8e50a39 | Giorgos Verigakis | except ValueError: |
101 | d8e50a39 | Giorgos Verigakis | raise BadRequest('Invalid changes-since parameter.') |
102 | aa197ee4 | Vangelis Koukis | |
103 | e87d30f3 | Giorgos Verigakis | now = datetime.datetime.now() |
104 | e87d30f3 | Giorgos Verigakis | if utc_since > now:
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105 | d8e50a39 | Giorgos Verigakis | raise BadRequest('changes-since value set in the future.') |
106 | aa197ee4 | Vangelis Koukis | |
107 | e87d30f3 | Giorgos Verigakis | if now - utc_since > timedelta(seconds=settings.POLL_LIMIT):
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108 | d8e50a39 | Giorgos Verigakis | raise BadRequest('Too old changes-since value.') |
109 | aa197ee4 | Vangelis Koukis | |
110 | 0140e54b | Vangelis Koukis | return utc_since
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111 | aa197ee4 | Vangelis Koukis | |
112 | dca2a31f | Giorgos Verigakis | |
113 | dca2a31f | Giorgos Verigakis | def random_password(): |
114 | dca2a31f | Giorgos Verigakis | """Generates a random password
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115 | ce55f211 | Kostas Papadimitriou |
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116 | 62eac5a6 | Giorgos Verigakis | We generate a windows compliant password: it must contain at least
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117 | dca2a31f | Giorgos Verigakis | one charachter from each of the groups: upper case, lower case, digits.
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118 | dca2a31f | Giorgos Verigakis | """
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119 | ce55f211 | Kostas Papadimitriou | |
120 | dca2a31f | Giorgos Verigakis | pool = lowercase + uppercase + digits |
121 | dca2a31f | Giorgos Verigakis | lowerset = set(lowercase)
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122 | dca2a31f | Giorgos Verigakis | upperset = set(uppercase)
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123 | dca2a31f | Giorgos Verigakis | digitset = set(digits)
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124 | dca2a31f | Giorgos Verigakis | length = 10
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125 | ce55f211 | Kostas Papadimitriou | |
126 | 62eac5a6 | Giorgos Verigakis | password = ''.join(choice(pool) for i in range(length - 2)) |
127 | ce55f211 | Kostas Papadimitriou | |
128 | 62eac5a6 | Giorgos Verigakis | # Make sure the password is compliant
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129 | 62eac5a6 | Giorgos Verigakis | chars = set(password)
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130 | 62eac5a6 | Giorgos Verigakis | if not chars & lowerset: |
131 | 62eac5a6 | Giorgos Verigakis | password += choice(lowercase) |
132 | 62eac5a6 | Giorgos Verigakis | if not chars & upperset: |
133 | 62eac5a6 | Giorgos Verigakis | password += choice(uppercase) |
134 | 62eac5a6 | Giorgos Verigakis | if not chars & digitset: |
135 | 62eac5a6 | Giorgos Verigakis | password += choice(digits) |
136 | ce55f211 | Kostas Papadimitriou | |
137 | 62eac5a6 | Giorgos Verigakis | # Pad if necessary to reach required length
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138 | 62eac5a6 | Giorgos Verigakis | password += ''.join(choice(pool) for i in range(length - len(password))) |
139 | ce55f211 | Kostas Papadimitriou | |
140 | dca2a31f | Giorgos Verigakis | return password
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141 | dca2a31f | Giorgos Verigakis | |
142 | d8e50a39 | Giorgos Verigakis | |
143 | c738c935 | Giorgos Verigakis | def zeropad(s): |
144 | c738c935 | Giorgos Verigakis | """Add zeros at the end of a string in order to make its length
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145 | c738c935 | Giorgos Verigakis | a multiple of 16."""
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146 | d1387ed7 | Christodoulos Psaltis | |
147 | c738c935 | Giorgos Verigakis | npad = 16 - len(s) % 16 |
148 | c738c935 | Giorgos Verigakis | return s + '\x00' * npad |
149 | c738c935 | Giorgos Verigakis | |
150 | a08e4270 | Vangelis Koukis | |
151 | c738c935 | Giorgos Verigakis | def encrypt(plaintext): |
152 | c738c935 | Giorgos Verigakis | # Make sure key is 32 bytes long
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153 | c738c935 | Giorgos Verigakis | key = sha256(settings.SECRET_KEY).digest() |
154 | d1387ed7 | Christodoulos Psaltis | |
155 | c738c935 | Giorgos Verigakis | aes = AES.new(key) |
156 | c738c935 | Giorgos Verigakis | enc = aes.encrypt(zeropad(plaintext)) |
157 | c738c935 | Giorgos Verigakis | return b64encode(enc)
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158 | c738c935 | Giorgos Verigakis | |
159 | 7e2f9d4b | Giorgos Verigakis | |
160 | 7f2dbcad | Christos Stavrakakis | def get_vm(server_id, user_id, for_update=False, non_deleted=False, |
161 | 7f2dbcad | Christos Stavrakakis | non_suspended=False):
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162 | e221ade2 | Christos Stavrakakis | """Find a VirtualMachine instance based on ID and owner."""
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163 | aa197ee4 | Vangelis Koukis | |
164 | d8e50a39 | Giorgos Verigakis | try:
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165 | d8e50a39 | Giorgos Verigakis | server_id = int(server_id)
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166 | 7f2dbcad | Christos Stavrakakis | servers = VirtualMachine.objects |
167 | 7f2dbcad | Christos Stavrakakis | if for_update:
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168 | 7f2dbcad | Christos Stavrakakis | servers = servers.select_for_update() |
169 | 7f2dbcad | Christos Stavrakakis | vm = servers.get(id=server_id, userid=user_id) |
170 | e221ade2 | Christos Stavrakakis | if non_deleted and vm.deleted: |
171 | e221ade2 | Christos Stavrakakis | raise VirtualMachine.DeletedError
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172 | e221ade2 | Christos Stavrakakis | if non_suspended and vm.suspended: |
173 | 17c2ed57 | Christos Stavrakakis | raise Forbidden("Administratively Suspended VM") |
174 | 3a522cff | Christos Stavrakakis | return vm
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175 | d8e50a39 | Giorgos Verigakis | except ValueError: |
176 | d8e50a39 | Giorgos Verigakis | raise BadRequest('Invalid server ID.') |
177 | d8e50a39 | Giorgos Verigakis | except VirtualMachine.DoesNotExist:
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178 | d8e50a39 | Giorgos Verigakis | raise ItemNotFound('Server not found.') |
179 | d8e50a39 | Giorgos Verigakis | |
180 | 7f2dbcad | Christos Stavrakakis | |
181 | 40777cc8 | Giorgos Verigakis | def get_vm_meta(vm, key): |
182 | d8e50a39 | Giorgos Verigakis | """Return a VirtualMachineMetadata instance or raise ItemNotFound."""
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183 | aa197ee4 | Vangelis Koukis | |
184 | d8e50a39 | Giorgos Verigakis | try:
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185 | 40777cc8 | Giorgos Verigakis | return VirtualMachineMetadata.objects.get(meta_key=key, vm=vm)
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186 | d8e50a39 | Giorgos Verigakis | except VirtualMachineMetadata.DoesNotExist:
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187 | d8e50a39 | Giorgos Verigakis | raise ItemNotFound('Metadata key not found.') |
188 | d8e50a39 | Giorgos Verigakis | |
189 | a08e4270 | Vangelis Koukis | |
190 | 6ef51e9f | Giorgos Verigakis | def get_image(image_id, user_id): |
191 | d8e50a39 | Giorgos Verigakis | """Return an Image instance or raise ItemNotFound."""
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192 | aa197ee4 | Vangelis Koukis | |
193 | 6ef51e9f | Giorgos Verigakis | backend = ImageBackend(user_id) |
194 | d8e50a39 | Giorgos Verigakis | try:
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195 | 6ef51e9f | Giorgos Verigakis | image = backend.get_image(image_id) |
196 | 3a9b3cde | Giorgos Verigakis | if not image: |
197 | 3a9b3cde | Giorgos Verigakis | raise ItemNotFound('Image not found.') |
198 | 3a9b3cde | Giorgos Verigakis | return image
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199 | 3a9b3cde | Giorgos Verigakis | finally:
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200 | 3a9b3cde | Giorgos Verigakis | backend.close() |
201 | 3a9b3cde | Giorgos Verigakis | |
202 | a08e4270 | Vangelis Koukis | |
203 | dca7553e | Christos Stavrakakis | def get_image_dict(image_id, user_id): |
204 | dca7553e | Christos Stavrakakis | image = {} |
205 | dca7553e | Christos Stavrakakis | img = get_image(image_id, user_id) |
206 | dca7553e | Christos Stavrakakis | properties = img.get('properties', {})
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207 | dca7553e | Christos Stavrakakis | image['backend_id'] = img['location'] |
208 | dca7553e | Christos Stavrakakis | image['format'] = img['disk_format'] |
209 | dca7553e | Christos Stavrakakis | image['metadata'] = dict((key.upper(), val) \ |
210 | dca7553e | Christos Stavrakakis | for key, val in properties.items()) |
211 | dca7553e | Christos Stavrakakis | return image
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212 | dca7553e | Christos Stavrakakis | |
213 | dca7553e | Christos Stavrakakis | |
214 | aa8230bd | Christos Stavrakakis | def get_flavor(flavor_id, include_deleted=False): |
215 | 529178b1 | Giorgos Verigakis | """Return a Flavor instance or raise ItemNotFound."""
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216 | aa197ee4 | Vangelis Koukis | |
217 | 529178b1 | Giorgos Verigakis | try:
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218 | 529178b1 | Giorgos Verigakis | flavor_id = int(flavor_id)
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219 | aa8230bd | Christos Stavrakakis | if include_deleted:
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220 | aa8230bd | Christos Stavrakakis | return Flavor.objects.get(id=flavor_id)
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221 | aa8230bd | Christos Stavrakakis | else:
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222 | aa8230bd | Christos Stavrakakis | return Flavor.objects.get(id=flavor_id, deleted=include_deleted)
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223 | 6ef51e9f | Giorgos Verigakis | except (ValueError, Flavor.DoesNotExist): |
224 | 529178b1 | Giorgos Verigakis | raise ItemNotFound('Flavor not found.') |
225 | d8e50a39 | Giorgos Verigakis | |
226 | a08e4270 | Vangelis Koukis | |
227 | d2e73c0c | Christos Stavrakakis | def get_network(network_id, user_id, for_update=False): |
228 | e2ee7808 | Giorgos Verigakis | """Return a Network instance or raise ItemNotFound."""
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229 | aa197ee4 | Vangelis Koukis | |
230 | e2ee7808 | Giorgos Verigakis | try:
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231 | 7fede91e | Christos Stavrakakis | network_id = int(network_id)
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232 | d3406fbc | Christos Stavrakakis | objects = Network.objects |
233 | d2e73c0c | Christos Stavrakakis | if for_update:
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234 | d3406fbc | Christos Stavrakakis | objects = objects.select_for_update() |
235 | d3406fbc | Christos Stavrakakis | return objects.get(Q(userid=user_id) | Q(public=True), id=network_id) |
236 | 6ef51e9f | Giorgos Verigakis | except (ValueError, Network.DoesNotExist): |
237 | e2ee7808 | Giorgos Verigakis | raise ItemNotFound('Network not found.') |
238 | e2ee7808 | Giorgos Verigakis | |
239 | a08e4270 | Vangelis Koukis | |
240 | b14725eb | Christos Stavrakakis | def validate_network_size(cidr_block): |
241 | b14725eb | Christos Stavrakakis | """Return True if network size is allowed."""
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242 | b14725eb | Christos Stavrakakis | return cidr_block <= 29 and cidr_block > MAX_CIDR_BLOCK |
243 | b14725eb | Christos Stavrakakis | |
244 | b14725eb | Christos Stavrakakis | |
245 | adc46059 | Christos Stavrakakis | def allocate_public_address(backend): |
246 | adc46059 | Christos Stavrakakis | """Allocate a public IP for a vm."""
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247 | adc46059 | Christos Stavrakakis | for network in backend_public_networks(backend): |
248 | adc46059 | Christos Stavrakakis | try:
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249 | adc46059 | Christos Stavrakakis | address = get_network_free_address(network) |
250 | adc46059 | Christos Stavrakakis | return (network, address)
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251 | adc46059 | Christos Stavrakakis | except EmptyPool:
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252 | adc46059 | Christos Stavrakakis | pass
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253 | adc46059 | Christos Stavrakakis | return (None, None) |
254 | adc46059 | Christos Stavrakakis | |
255 | adc46059 | Christos Stavrakakis | |
256 | dca7553e | Christos Stavrakakis | def get_public_ip(backend): |
257 | dca7553e | Christos Stavrakakis | """Reserve an IP from a public network.
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258 | dca7553e | Christos Stavrakakis |
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259 | dca7553e | Christos Stavrakakis | This method should run inside a transaction.
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260 | dca7553e | Christos Stavrakakis |
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261 | dca7553e | Christos Stavrakakis | """
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262 | dca7553e | Christos Stavrakakis | address = None
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263 | dca7553e | Christos Stavrakakis | if settings.PUBLIC_ROUTED_USE_POOL:
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264 | dca7553e | Christos Stavrakakis | (network, address) = allocate_public_address(backend) |
265 | dca7553e | Christos Stavrakakis | else:
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266 | dca7553e | Christos Stavrakakis | for net in list(backend_public_networks(backend)): |
267 | dca7553e | Christos Stavrakakis | pool = net.get_pool() |
268 | dca7553e | Christos Stavrakakis | if not pool.empty(): |
269 | dca7553e | Christos Stavrakakis | address = 'pool'
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270 | dca7553e | Christos Stavrakakis | network = net |
271 | dca7553e | Christos Stavrakakis | break
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272 | dca7553e | Christos Stavrakakis | if address is None: |
273 | dca7553e | Christos Stavrakakis | log.error("Public networks of backend %s are full", backend)
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274 | dca7553e | Christos Stavrakakis | raise OverLimit("Can not allocate IP for new machine." |
275 | dca7553e | Christos Stavrakakis | " Public networks are full.")
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276 | dca7553e | Christos Stavrakakis | return (network, address)
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277 | dca7553e | Christos Stavrakakis | |
278 | dca7553e | Christos Stavrakakis | |
279 | 7fede91e | Christos Stavrakakis | def backend_public_networks(backend): |
280 | 7fede91e | Christos Stavrakakis | """Return available public networks of the backend.
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281 | 7fede91e | Christos Stavrakakis |
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282 | 7fede91e | Christos Stavrakakis | Iterator for non-deleted public networks that are available
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283 | 7fede91e | Christos Stavrakakis | to the specified backend.
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284 | 7fede91e | Christos Stavrakakis |
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285 | 7fede91e | Christos Stavrakakis | """
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286 | 7fede91e | Christos Stavrakakis | for network in Network.objects.filter(public=True, deleted=False): |
287 | 7fede91e | Christos Stavrakakis | if BackendNetwork.objects.filter(network=network,
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288 | 7fede91e | Christos Stavrakakis | backend=backend).exists(): |
289 | 7fede91e | Christos Stavrakakis | yield network
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290 | 7fede91e | Christos Stavrakakis | |
291 | 7fede91e | Christos Stavrakakis | |
292 | 7fede91e | Christos Stavrakakis | def get_network_free_address(network): |
293 | 7fede91e | Christos Stavrakakis | """Reserve an IP address from the IP Pool of the network.
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294 | 7fede91e | Christos Stavrakakis |
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295 | fdc94944 | Christos Stavrakakis | Raises EmptyPool
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296 | 7fede91e | Christos Stavrakakis |
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297 | 7fede91e | Christos Stavrakakis | """
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298 | 7fede91e | Christos Stavrakakis | |
299 | fdc94944 | Christos Stavrakakis | pool = network.get_pool() |
300 | fdc94944 | Christos Stavrakakis | address = pool.get() |
301 | 7fede91e | Christos Stavrakakis | pool.save() |
302 | 7fede91e | Christos Stavrakakis | return address
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303 | 7fede91e | Christos Stavrakakis | |
304 | 7fede91e | Christos Stavrakakis | |
305 | d44c236b | Giorgos Verigakis | def get_nic(machine, network): |
306 | d44c236b | Giorgos Verigakis | try:
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307 | d44c236b | Giorgos Verigakis | return NetworkInterface.objects.get(machine=machine, network=network)
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308 | d44c236b | Giorgos Verigakis | except NetworkInterface.DoesNotExist:
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309 | d44c236b | Giorgos Verigakis | raise ItemNotFound('Server not connected to this network.') |
310 | d44c236b | Giorgos Verigakis | |
311 | 7fede91e | Christos Stavrakakis | |
312 | 08b079e2 | Stavros Sachtouris | def get_nic_from_index(vm, nic_index): |
313 | 08b079e2 | Stavros Sachtouris | """Returns the nic_index-th nic of a vm
|
314 | 08b079e2 | Stavros Sachtouris | Error Response Codes: itemNotFound (404), badMediaType (415)
|
315 | 08b079e2 | Stavros Sachtouris | """
|
316 | 08b079e2 | Stavros Sachtouris | matching_nics = vm.nics.filter(index=nic_index) |
317 | 08b079e2 | Stavros Sachtouris | matching_nics_len = len(matching_nics)
|
318 | 08b079e2 | Stavros Sachtouris | if matching_nics_len < 1: |
319 | 08b079e2 | Stavros Sachtouris | raise ItemNotFound('NIC not found on VM') |
320 | 08b079e2 | Stavros Sachtouris | elif matching_nics_len > 1: |
321 | 08b079e2 | Stavros Sachtouris | raise BadMediaType('NIC index conflict on VM') |
322 | 08b079e2 | Stavros Sachtouris | nic = matching_nics[0]
|
323 | 08b079e2 | Stavros Sachtouris | return nic
|
324 | e2ee7808 | Giorgos Verigakis | |
325 | 7fede91e | Christos Stavrakakis | |
326 | 7e2f9d4b | Giorgos Verigakis | def get_request_dict(request): |
327 | d8e50a39 | Giorgos Verigakis | """Returns data sent by the client as a python dict."""
|
328 | aa197ee4 | Vangelis Koukis | |
329 | 7e2f9d4b | Giorgos Verigakis | data = request.raw_post_data |
330 | 7e45ddef | Dimitris Moraitis | if request.META.get('CONTENT_TYPE').startswith('application/json'): |
331 | 7e2f9d4b | Giorgos Verigakis | try:
|
332 | 7e2f9d4b | Giorgos Verigakis | return json.loads(data)
|
333 | 7e2f9d4b | Giorgos Verigakis | except ValueError: |
334 | d8e50a39 | Giorgos Verigakis | raise BadRequest('Invalid JSON data.') |
335 | d8e50a39 | Giorgos Verigakis | else:
|
336 | d8e50a39 | Giorgos Verigakis | raise BadRequest('Unsupported Content-Type.') |
337 | 7e2f9d4b | Giorgos Verigakis | |
338 | a08e4270 | Vangelis Koukis | |
339 | 8b01f7f3 | Giorgos Verigakis | def update_response_headers(request, response): |
340 | 8b01f7f3 | Giorgos Verigakis | if request.serialization == 'xml': |
341 | 8b01f7f3 | Giorgos Verigakis | response['Content-Type'] = 'application/xml' |
342 | 8b01f7f3 | Giorgos Verigakis | elif request.serialization == 'atom': |
343 | 8b01f7f3 | Giorgos Verigakis | response['Content-Type'] = 'application/atom+xml' |
344 | 8b01f7f3 | Giorgos Verigakis | else:
|
345 | 8b01f7f3 | Giorgos Verigakis | response['Content-Type'] = 'application/json' |
346 | aa197ee4 | Vangelis Koukis | |
347 | 4cf8adf8 | Vangelis Koukis | if settings.TEST:
|
348 | cdb65551 | Giorgos Verigakis | response['Date'] = format_date_time(time())
|
349 | ce55f211 | Kostas Papadimitriou | |
350 | b75555e5 | Giorgos Verigakis | add_never_cache_headers(response) |
351 | b75555e5 | Giorgos Verigakis | |
352 | 8b01f7f3 | Giorgos Verigakis | |
353 | 432fc8c3 | Giorgos Verigakis | def render_metadata(request, metadata, use_values=False, status=200): |
354 | 432fc8c3 | Giorgos Verigakis | if request.serialization == 'xml': |
355 | 432fc8c3 | Giorgos Verigakis | data = render_to_string('metadata.xml', {'metadata': metadata}) |
356 | 432fc8c3 | Giorgos Verigakis | else:
|
357 | b36f78fa | Giorgos Verigakis | if use_values:
|
358 | b36f78fa | Giorgos Verigakis | d = {'metadata': {'values': metadata}} |
359 | b36f78fa | Giorgos Verigakis | else:
|
360 | b36f78fa | Giorgos Verigakis | d = {'metadata': metadata}
|
361 | 432fc8c3 | Giorgos Verigakis | data = json.dumps(d) |
362 | 432fc8c3 | Giorgos Verigakis | return HttpResponse(data, status=status)
|
363 | 432fc8c3 | Giorgos Verigakis | |
364 | a08e4270 | Vangelis Koukis | |
365 | 432fc8c3 | Giorgos Verigakis | def render_meta(request, meta, status=200): |
366 | 432fc8c3 | Giorgos Verigakis | if request.serialization == 'xml': |
367 | 6ef51e9f | Giorgos Verigakis | data = render_to_string('meta.xml', dict(key=key, val=val)) |
368 | 432fc8c3 | Giorgos Verigakis | else:
|
369 | 6ef51e9f | Giorgos Verigakis | data = json.dumps(dict(meta=meta))
|
370 | 432fc8c3 | Giorgos Verigakis | return HttpResponse(data, status=status)
|
371 | 432fc8c3 | Giorgos Verigakis | |
372 | a08e4270 | Vangelis Koukis | |
373 | c36934a7 | Giorgos Verigakis | def render_fault(request, fault): |
374 | 4cf8adf8 | Vangelis Koukis | if settings.DEBUG or settings.TEST: |
375 | 7e2f9d4b | Giorgos Verigakis | fault.details = format_exc(fault) |
376 | aa197ee4 | Vangelis Koukis | |
377 | d8e50a39 | Giorgos Verigakis | if request.serialization == 'xml': |
378 | d8e50a39 | Giorgos Verigakis | data = render_to_string('fault.xml', {'fault': fault}) |
379 | 7e2f9d4b | Giorgos Verigakis | else:
|
380 | b36f78fa | Giorgos Verigakis | d = {fault.name: { |
381 | b36f78fa | Giorgos Verigakis | 'code': fault.code,
|
382 | b36f78fa | Giorgos Verigakis | 'message': fault.message,
|
383 | b36f78fa | Giorgos Verigakis | 'details': fault.details}}
|
384 | 7e2f9d4b | Giorgos Verigakis | data = json.dumps(d) |
385 | aa197ee4 | Vangelis Koukis | |
386 | f0656db1 | Giorgos Verigakis | resp = HttpResponse(data, status=fault.code) |
387 | 8b01f7f3 | Giorgos Verigakis | update_response_headers(request, resp) |
388 | f0656db1 | Giorgos Verigakis | return resp
|
389 | d8e50a39 | Giorgos Verigakis | |
390 | 432fc8c3 | Giorgos Verigakis | |
391 | d8e50a39 | Giorgos Verigakis | def request_serialization(request, atom_allowed=False): |
392 | d8e50a39 | Giorgos Verigakis | """Return the serialization format requested.
|
393 | aa197ee4 | Vangelis Koukis |
|
394 | 529178b1 | Giorgos Verigakis | Valid formats are 'json', 'xml' and 'atom' if `atom_allowed` is True.
|
395 | d8e50a39 | Giorgos Verigakis | """
|
396 | aa197ee4 | Vangelis Koukis | |
397 | d8e50a39 | Giorgos Verigakis | path = request.path |
398 | aa197ee4 | Vangelis Koukis | |
399 | d8e50a39 | Giorgos Verigakis | if path.endswith('.json'): |
400 | d8e50a39 | Giorgos Verigakis | return 'json' |
401 | d8e50a39 | Giorgos Verigakis | elif path.endswith('.xml'): |
402 | d8e50a39 | Giorgos Verigakis | return 'xml' |
403 | d8e50a39 | Giorgos Verigakis | elif atom_allowed and path.endswith('.atom'): |
404 | d8e50a39 | Giorgos Verigakis | return 'atom' |
405 | aa197ee4 | Vangelis Koukis | |
406 | d8e50a39 | Giorgos Verigakis | for item in request.META.get('HTTP_ACCEPT', '').split(','): |
407 | d8e50a39 | Giorgos Verigakis | accept, sep, rest = item.strip().partition(';')
|
408 | d8e50a39 | Giorgos Verigakis | if accept == 'application/json': |
409 | d8e50a39 | Giorgos Verigakis | return 'json' |
410 | d8e50a39 | Giorgos Verigakis | elif accept == 'application/xml': |
411 | d8e50a39 | Giorgos Verigakis | return 'xml' |
412 | d8e50a39 | Giorgos Verigakis | elif atom_allowed and accept == 'application/atom+xml': |
413 | d8e50a39 | Giorgos Verigakis | return 'atom' |
414 | aa197ee4 | Vangelis Koukis | |
415 | d8e50a39 | Giorgos Verigakis | return 'json' |
416 | 7e2f9d4b | Giorgos Verigakis | |
417 | a08e4270 | Vangelis Koukis | |
418 | d8e50a39 | Giorgos Verigakis | def api_method(http_method=None, atom_allowed=False): |
419 | d8e50a39 | Giorgos Verigakis | """Decorator function for views that implement an API method."""
|
420 | aa197ee4 | Vangelis Koukis | |
421 | c36934a7 | Giorgos Verigakis | def decorator(func): |
422 | c36934a7 | Giorgos Verigakis | @wraps(func)
|
423 | c36934a7 | Giorgos Verigakis | def wrapper(request, *args, **kwargs): |
424 | c36934a7 | Giorgos Verigakis | try:
|
425 | 6ef51e9f | Giorgos Verigakis | request.serialization = request_serialization(request, |
426 | 6ef51e9f | Giorgos Verigakis | atom_allowed) |
427 | 4b3b8688 | Giorgos Verigakis | get_user(request, settings.ASTAKOS_URL) |
428 | 4b3b8688 | Giorgos Verigakis | if not request.user_uniq: |
429 | 40777cc8 | Giorgos Verigakis | raise Unauthorized('No user found.') |
430 | d8e50a39 | Giorgos Verigakis | if http_method and request.method != http_method: |
431 | d8e50a39 | Giorgos Verigakis | raise BadRequest('Method not allowed.') |
432 | 7fede91e | Christos Stavrakakis | |
433 | c36934a7 | Giorgos Verigakis | resp = func(request, *args, **kwargs) |
434 | 8b01f7f3 | Giorgos Verigakis | update_response_headers(request, resp) |
435 | c36934a7 | Giorgos Verigakis | return resp
|
436 | 5231a38a | Giorgos Verigakis | except VirtualMachine.DeletedError:
|
437 | 5231a38a | Giorgos Verigakis | fault = BadRequest('Server has been deleted.')
|
438 | 5231a38a | Giorgos Verigakis | return render_fault(request, fault)
|
439 | 22a9959d | Christos Stavrakakis | except Network.DeletedError:
|
440 | 22a9959d | Christos Stavrakakis | fault = BadRequest('Network has been deleted.')
|
441 | 22a9959d | Christos Stavrakakis | return render_fault(request, fault)
|
442 | 5231a38a | Giorgos Verigakis | except VirtualMachine.BuildingError:
|
443 | 5231a38a | Giorgos Verigakis | fault = BuildInProgress('Server is being built.')
|
444 | 5231a38a | Giorgos Verigakis | return render_fault(request, fault)
|
445 | c36934a7 | Giorgos Verigakis | except Fault, fault:
|
446 | 260147b1 | Christos Stavrakakis | if fault.code >= 500: |
447 | 260147b1 | Christos Stavrakakis | log.exception('API fault')
|
448 | c36934a7 | Giorgos Verigakis | return render_fault(request, fault)
|
449 | 7fede91e | Christos Stavrakakis | except BaseException: |
450 | 9e98ba3c | Giorgos Verigakis | log.exception('Unexpected error')
|
451 | 529178b1 | Giorgos Verigakis | fault = ServiceUnavailable('Unexpected error.')
|
452 | c36934a7 | Giorgos Verigakis | return render_fault(request, fault)
|
453 | c36934a7 | Giorgos Verigakis | return wrapper
|
454 | c36934a7 | Giorgos Verigakis | return decorator
|
455 | 08b079e2 | Stavros Sachtouris | |
456 | 3165f027 | Christos Stavrakakis | |
457 | 08b079e2 | Stavros Sachtouris | def construct_nic_id(nic): |
458 | 08b079e2 | Stavros Sachtouris | return "-".join(["nic", unicode(nic.machine.id), unicode(nic.index)]) |
459 | 6dd70a5c | Christos Stavrakakis | |
460 | 6dd70a5c | Christos Stavrakakis | |
461 | af6a3bc5 | Christos Stavrakakis | def net_resources(net_type): |
462 | af6a3bc5 | Christos Stavrakakis | mac_prefix = settings.MAC_POOL_BASE |
463 | af6a3bc5 | Christos Stavrakakis | if net_type == 'PRIVATE_MAC_FILTERED': |
464 | 3165f027 | Christos Stavrakakis | link = settings.PRIVATE_MAC_FILTERED_BRIDGE |
465 | af6a3bc5 | Christos Stavrakakis | mac_pool = MacPrefixPoolTable.get_pool() |
466 | af6a3bc5 | Christos Stavrakakis | mac_prefix = mac_pool.get() |
467 | af6a3bc5 | Christos Stavrakakis | mac_pool.save() |
468 | af6a3bc5 | Christos Stavrakakis | elif net_type == 'PRIVATE_PHYSICAL_VLAN': |
469 | 03992c72 | Christos Stavrakakis | pool = BridgePoolTable.get_pool() |
470 | 03992c72 | Christos Stavrakakis | link = pool.get() |
471 | 03992c72 | Christos Stavrakakis | pool.save() |
472 | af6a3bc5 | Christos Stavrakakis | elif net_type == 'CUSTOM_ROUTED': |
473 | 3165f027 | Christos Stavrakakis | link = settings.CUSTOM_ROUTED_ROUTING_TABLE |
474 | af6a3bc5 | Christos Stavrakakis | elif net_type == 'CUSTOM_BRIDGED': |
475 | 3165f027 | Christos Stavrakakis | link = settings.CUSTOM_BRIDGED_BRIDGE |
476 | af6a3bc5 | Christos Stavrakakis | elif net_type == 'PUBLIC_ROUTED': |
477 | 3165f027 | Christos Stavrakakis | link = settings.PUBLIC_ROUTED_ROUTING_TABLE |
478 | 3165f027 | Christos Stavrakakis | else:
|
479 | af6a3bc5 | Christos Stavrakakis | raise BadRequest('Unknown network type') |
480 | 6dd70a5c | Christos Stavrakakis | |
481 | af6a3bc5 | Christos Stavrakakis | return link, mac_prefix
|
482 | dca7553e | Christos Stavrakakis | |
483 | dca7553e | Christos Stavrakakis | |
484 | dca7553e | Christos Stavrakakis | def verify_personality(personality): |
485 | dca7553e | Christos Stavrakakis | for p in personality: |
486 | dca7553e | Christos Stavrakakis | # Verify that personalities are well-formed
|
487 | dca7553e | Christos Stavrakakis | try:
|
488 | dca7553e | Christos Stavrakakis | assert isinstance(p, dict) |
489 | dca7553e | Christos Stavrakakis | keys = set(p.keys())
|
490 | dca7553e | Christos Stavrakakis | allowed = set(['contents', 'group', 'mode', 'owner', 'path']) |
491 | dca7553e | Christos Stavrakakis | assert keys.issubset(allowed)
|
492 | dca7553e | Christos Stavrakakis | contents = p['contents']
|
493 | dca7553e | Christos Stavrakakis | if len(contents) > settings.MAX_PERSONALITY_SIZE: |
494 | dca7553e | Christos Stavrakakis | # No need to decode if contents already exceed limit
|
495 | dca7553e | Christos Stavrakakis | raise OverLimit("Maximum size of personality exceeded") |
496 | dca7553e | Christos Stavrakakis | if len(b64decode(contents)) > settings.MAX_PERSONALITY_SIZE: |
497 | dca7553e | Christos Stavrakakis | raise OverLimit("Maximum size of personality exceeded") |
498 | dca7553e | Christos Stavrakakis | except AssertionError: |
499 | dca7553e | Christos Stavrakakis | raise BadRequest("Malformed personality in request") |