root / snf-cyclades-app / synnefo / api / util.py @ 5b0832fc
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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 | 9ae613af | Christos Stavrakakis | import ipaddr |
36 | c738c935 | Giorgos Verigakis | |
37 | dca7553e | Christos Stavrakakis | from base64 import b64encode, b64decode |
38 | d8e50a39 | Giorgos Verigakis | from datetime import timedelta, tzinfo |
39 | d8e50a39 | Giorgos Verigakis | from functools import wraps |
40 | c738c935 | Giorgos Verigakis | from hashlib import sha256 |
41 | 2035039b | Giorgos Verigakis | from logging import getLogger |
42 | d8e50a39 | Giorgos Verigakis | from random import choice |
43 | dca2a31f | Giorgos Verigakis | from string import digits, lowercase, uppercase |
44 | 8b01f7f3 | Giorgos Verigakis | from time import time |
45 | d8e50a39 | Giorgos Verigakis | from traceback import format_exc |
46 | 8b01f7f3 | Giorgos Verigakis | from wsgiref.handlers import format_date_time |
47 | 7e2f9d4b | Giorgos Verigakis | |
48 | 2035039b | Giorgos Verigakis | import dateutil.parser |
49 | 2035039b | Giorgos Verigakis | |
50 | c738c935 | Giorgos Verigakis | from Crypto.Cipher import AES |
51 | 529178b1 | Giorgos Verigakis | |
52 | d8e50a39 | Giorgos Verigakis | from django.conf import settings |
53 | 7e2f9d4b | Giorgos Verigakis | from django.http import HttpResponse |
54 | 7e2f9d4b | Giorgos Verigakis | from django.template.loader import render_to_string |
55 | 29a59bc1 | Giorgos Verigakis | from django.utils import simplejson as json |
56 | b75555e5 | Giorgos Verigakis | from django.utils.cache import add_never_cache_headers |
57 | d3406fbc | Christos Stavrakakis | from django.db.models import Q |
58 | 7e2f9d4b | Giorgos Verigakis | |
59 | bd40abfa | Christos Stavrakakis | from snf_django.lib.api import faults |
60 | 6ef51e9f | Giorgos Verigakis | from synnefo.db.models import (Flavor, VirtualMachine, VirtualMachineMetadata, |
61 | 7fede91e | Christos Stavrakakis | Network, BackendNetwork, NetworkInterface, |
62 | 85919a0f | Christos Stavrakakis | BridgePoolTable, MacPrefixPoolTable, Backend) |
63 | adc46059 | Christos Stavrakakis | from synnefo.db.pools import EmptyPool |
64 | 6dd70a5c | Christos Stavrakakis | |
65 | 04a1b675 | Christos Stavrakakis | from snf_django.lib.astakos import get_user |
66 | b3fd98ae | Christos Stavrakakis | from synnefo.plankton.utils import image_backend |
67 | b14725eb | Christos Stavrakakis | from synnefo.settings import MAX_CIDR_BLOCK |
68 | 9e98ba3c | Giorgos Verigakis | |
69 | 9e98ba3c | Giorgos Verigakis | |
70 | 9e98ba3c | Giorgos Verigakis | log = getLogger('synnefo.api')
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71 | 9e98ba3c | Giorgos Verigakis | |
72 | 7e2f9d4b | Giorgos Verigakis | |
73 | dca2a31f | Giorgos Verigakis | def random_password(): |
74 | dca2a31f | Giorgos Verigakis | """Generates a random password
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75 | ce55f211 | Kostas Papadimitriou |
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76 | 62eac5a6 | Giorgos Verigakis | We generate a windows compliant password: it must contain at least
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77 | dca2a31f | Giorgos Verigakis | one charachter from each of the groups: upper case, lower case, digits.
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78 | dca2a31f | Giorgos Verigakis | """
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79 | ce55f211 | Kostas Papadimitriou | |
80 | dca2a31f | Giorgos Verigakis | pool = lowercase + uppercase + digits |
81 | dca2a31f | Giorgos Verigakis | lowerset = set(lowercase)
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82 | dca2a31f | Giorgos Verigakis | upperset = set(uppercase)
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83 | dca2a31f | Giorgos Verigakis | digitset = set(digits)
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84 | dca2a31f | Giorgos Verigakis | length = 10
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85 | ce55f211 | Kostas Papadimitriou | |
86 | 62eac5a6 | Giorgos Verigakis | password = ''.join(choice(pool) for i in range(length - 2)) |
87 | ce55f211 | Kostas Papadimitriou | |
88 | 62eac5a6 | Giorgos Verigakis | # Make sure the password is compliant
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89 | 62eac5a6 | Giorgos Verigakis | chars = set(password)
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90 | 62eac5a6 | Giorgos Verigakis | if not chars & lowerset: |
91 | 62eac5a6 | Giorgos Verigakis | password += choice(lowercase) |
92 | 62eac5a6 | Giorgos Verigakis | if not chars & upperset: |
93 | 62eac5a6 | Giorgos Verigakis | password += choice(uppercase) |
94 | 62eac5a6 | Giorgos Verigakis | if not chars & digitset: |
95 | 62eac5a6 | Giorgos Verigakis | password += choice(digits) |
96 | ce55f211 | Kostas Papadimitriou | |
97 | 62eac5a6 | Giorgos Verigakis | # Pad if necessary to reach required length
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98 | 62eac5a6 | Giorgos Verigakis | password += ''.join(choice(pool) for i in range(length - len(password))) |
99 | ce55f211 | Kostas Papadimitriou | |
100 | dca2a31f | Giorgos Verigakis | return password
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101 | dca2a31f | Giorgos Verigakis | |
102 | d8e50a39 | Giorgos Verigakis | |
103 | c738c935 | Giorgos Verigakis | def zeropad(s): |
104 | c738c935 | Giorgos Verigakis | """Add zeros at the end of a string in order to make its length
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105 | c738c935 | Giorgos Verigakis | a multiple of 16."""
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106 | d1387ed7 | Christodoulos Psaltis | |
107 | c738c935 | Giorgos Verigakis | npad = 16 - len(s) % 16 |
108 | c738c935 | Giorgos Verigakis | return s + '\x00' * npad |
109 | c738c935 | Giorgos Verigakis | |
110 | a08e4270 | Vangelis Koukis | |
111 | c738c935 | Giorgos Verigakis | def encrypt(plaintext): |
112 | c738c935 | Giorgos Verigakis | # Make sure key is 32 bytes long
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113 | c738c935 | Giorgos Verigakis | key = sha256(settings.SECRET_KEY).digest() |
114 | d1387ed7 | Christodoulos Psaltis | |
115 | c738c935 | Giorgos Verigakis | aes = AES.new(key) |
116 | c738c935 | Giorgos Verigakis | enc = aes.encrypt(zeropad(plaintext)) |
117 | c738c935 | Giorgos Verigakis | return b64encode(enc)
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118 | c738c935 | Giorgos Verigakis | |
119 | 7e2f9d4b | Giorgos Verigakis | |
120 | 7f2dbcad | Christos Stavrakakis | def get_vm(server_id, user_id, for_update=False, non_deleted=False, |
121 | 7f2dbcad | Christos Stavrakakis | non_suspended=False):
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122 | e221ade2 | Christos Stavrakakis | """Find a VirtualMachine instance based on ID and owner."""
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123 | aa197ee4 | Vangelis Koukis | |
124 | d8e50a39 | Giorgos Verigakis | try:
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125 | d8e50a39 | Giorgos Verigakis | server_id = int(server_id)
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126 | 7f2dbcad | Christos Stavrakakis | servers = VirtualMachine.objects |
127 | 7f2dbcad | Christos Stavrakakis | if for_update:
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128 | 7f2dbcad | Christos Stavrakakis | servers = servers.select_for_update() |
129 | 7f2dbcad | Christos Stavrakakis | vm = servers.get(id=server_id, userid=user_id) |
130 | e221ade2 | Christos Stavrakakis | if non_deleted and vm.deleted: |
131 | 5b0832fc | Christos Stavrakakis | raise faults.BadRequest("Server has been deleted.") |
132 | e221ade2 | Christos Stavrakakis | if non_suspended and vm.suspended: |
133 | bd40abfa | Christos Stavrakakis | raise faults.Forbidden("Administratively Suspended VM") |
134 | 3a522cff | Christos Stavrakakis | return vm
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135 | d8e50a39 | Giorgos Verigakis | except ValueError: |
136 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest('Invalid server ID.') |
137 | d8e50a39 | Giorgos Verigakis | except VirtualMachine.DoesNotExist:
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138 | bd40abfa | Christos Stavrakakis | raise faults.ItemNotFound('Server not found.') |
139 | d8e50a39 | Giorgos Verigakis | |
140 | 7f2dbcad | Christos Stavrakakis | |
141 | 40777cc8 | Giorgos Verigakis | def get_vm_meta(vm, key): |
142 | d8e50a39 | Giorgos Verigakis | """Return a VirtualMachineMetadata instance or raise ItemNotFound."""
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143 | aa197ee4 | Vangelis Koukis | |
144 | d8e50a39 | Giorgos Verigakis | try:
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145 | 40777cc8 | Giorgos Verigakis | return VirtualMachineMetadata.objects.get(meta_key=key, vm=vm)
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146 | d8e50a39 | Giorgos Verigakis | except VirtualMachineMetadata.DoesNotExist:
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147 | bd40abfa | Christos Stavrakakis | raise faults.ItemNotFound('Metadata key not found.') |
148 | d8e50a39 | Giorgos Verigakis | |
149 | a08e4270 | Vangelis Koukis | |
150 | 6ef51e9f | Giorgos Verigakis | def get_image(image_id, user_id): |
151 | d8e50a39 | Giorgos Verigakis | """Return an Image instance or raise ItemNotFound."""
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152 | aa197ee4 | Vangelis Koukis | |
153 | b3fd98ae | Christos Stavrakakis | with image_backend(user_id) as backend: |
154 | cda71050 | Christos Stavrakakis | return backend.get_image(image_id)
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155 | 3a9b3cde | Giorgos Verigakis | |
156 | a08e4270 | Vangelis Koukis | |
157 | dca7553e | Christos Stavrakakis | def get_image_dict(image_id, user_id): |
158 | dca7553e | Christos Stavrakakis | image = {} |
159 | dca7553e | Christos Stavrakakis | img = get_image(image_id, user_id) |
160 | dca7553e | Christos Stavrakakis | properties = img.get('properties', {})
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161 | dca7553e | Christos Stavrakakis | image['backend_id'] = img['location'] |
162 | dca7553e | Christos Stavrakakis | image['format'] = img['disk_format'] |
163 | e440e835 | Christos Stavrakakis | image['metadata'] = dict((key.upper(), val) |
164 | dca7553e | Christos Stavrakakis | for key, val in properties.items()) |
165 | 2cb812be | Christos Stavrakakis | image['checksum'] = img['checksum'] |
166 | 2cb812be | Christos Stavrakakis | |
167 | dca7553e | Christos Stavrakakis | return image
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168 | dca7553e | Christos Stavrakakis | |
169 | dca7553e | Christos Stavrakakis | |
170 | aa8230bd | Christos Stavrakakis | def get_flavor(flavor_id, include_deleted=False): |
171 | 529178b1 | Giorgos Verigakis | """Return a Flavor instance or raise ItemNotFound."""
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172 | aa197ee4 | Vangelis Koukis | |
173 | 529178b1 | Giorgos Verigakis | try:
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174 | 529178b1 | Giorgos Verigakis | flavor_id = int(flavor_id)
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175 | aa8230bd | Christos Stavrakakis | if include_deleted:
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176 | aa8230bd | Christos Stavrakakis | return Flavor.objects.get(id=flavor_id)
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177 | aa8230bd | Christos Stavrakakis | else:
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178 | aa8230bd | Christos Stavrakakis | return Flavor.objects.get(id=flavor_id, deleted=include_deleted)
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179 | 6ef51e9f | Giorgos Verigakis | except (ValueError, Flavor.DoesNotExist): |
180 | bd40abfa | Christos Stavrakakis | raise faults.ItemNotFound('Flavor not found.') |
181 | d8e50a39 | Giorgos Verigakis | |
182 | a08e4270 | Vangelis Koukis | |
183 | 9dcb5b8a | Christos Stavrakakis | def get_flavor_provider(flavor): |
184 | 9dcb5b8a | Christos Stavrakakis | """Extract provider from disk template.
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185 | 9dcb5b8a | Christos Stavrakakis |
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186 | 9dcb5b8a | Christos Stavrakakis | Provider for `ext` disk_template is encoded in the disk template
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187 | 9dcb5b8a | Christos Stavrakakis | name, which is formed `ext_<provider_name>`. Provider is None
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188 | 9dcb5b8a | Christos Stavrakakis | for all other disk templates.
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189 | 9dcb5b8a | Christos Stavrakakis |
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190 | 9dcb5b8a | Christos Stavrakakis | """
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191 | 9dcb5b8a | Christos Stavrakakis | disk_template = flavor.disk_template |
192 | 9dcb5b8a | Christos Stavrakakis | provider = None
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193 | 9dcb5b8a | Christos Stavrakakis | if disk_template.startswith("ext"): |
194 | 9dcb5b8a | Christos Stavrakakis | disk_template, provider = disk_template.split("_", 1) |
195 | 9dcb5b8a | Christos Stavrakakis | return disk_template, provider
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196 | 9dcb5b8a | Christos Stavrakakis | |
197 | 9dcb5b8a | Christos Stavrakakis | |
198 | d2e73c0c | Christos Stavrakakis | def get_network(network_id, user_id, for_update=False): |
199 | e2ee7808 | Giorgos Verigakis | """Return a Network instance or raise ItemNotFound."""
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200 | aa197ee4 | Vangelis Koukis | |
201 | e2ee7808 | Giorgos Verigakis | try:
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202 | 7fede91e | Christos Stavrakakis | network_id = int(network_id)
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203 | d3406fbc | Christos Stavrakakis | objects = Network.objects |
204 | d2e73c0c | Christos Stavrakakis | if for_update:
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205 | d3406fbc | Christos Stavrakakis | objects = objects.select_for_update() |
206 | d3406fbc | Christos Stavrakakis | return objects.get(Q(userid=user_id) | Q(public=True), id=network_id) |
207 | 6ef51e9f | Giorgos Verigakis | except (ValueError, Network.DoesNotExist): |
208 | bd40abfa | Christos Stavrakakis | raise faults.ItemNotFound('Network not found.') |
209 | e2ee7808 | Giorgos Verigakis | |
210 | a08e4270 | Vangelis Koukis | |
211 | 9ae613af | Christos Stavrakakis | def validate_network_params(subnet, gateway=None, subnet6=None, gateway6=None): |
212 | d368ec0c | Christos Stavrakakis | try:
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213 | d368ec0c | Christos Stavrakakis | # Use strict option to not all subnets with host bits set
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214 | 9ae613af | Christos Stavrakakis | network = ipaddr.IPv4Network(subnet, strict=True)
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215 | d368ec0c | Christos Stavrakakis | except ValueError: |
216 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Invalid network IPv4 subnet") |
217 | d368ec0c | Christos Stavrakakis | |
218 | d368ec0c | Christos Stavrakakis | # Check that network size is allowed!
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219 | d368ec0c | Christos Stavrakakis | if not validate_network_size(network.prefixlen): |
220 | bd40abfa | Christos Stavrakakis | raise faults.OverLimit(message="Unsupported network size", |
221 | 9ae613af | Christos Stavrakakis | details="Network mask must be in range (%s, 29]" %
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222 | 9ae613af | Christos Stavrakakis | MAX_CIDR_BLOCK) |
223 | 9ae613af | Christos Stavrakakis | |
224 | 9ae613af | Christos Stavrakakis | # Check that gateway belongs to network
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225 | 9ae613af | Christos Stavrakakis | if gateway:
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226 | 9ae613af | Christos Stavrakakis | try:
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227 | 9ae613af | Christos Stavrakakis | gateway = ipaddr.IPv4Address(gateway) |
228 | 9ae613af | Christos Stavrakakis | except ValueError: |
229 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Invalid network IPv4 gateway") |
230 | 9ae613af | Christos Stavrakakis | if not gateway in network: |
231 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Invalid network IPv4 gateway") |
232 | 9ae613af | Christos Stavrakakis | |
233 | 9ae613af | Christos Stavrakakis | if subnet6:
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234 | 9ae613af | Christos Stavrakakis | try:
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235 | 9ae613af | Christos Stavrakakis | # Use strict option to not all subnets with host bits set
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236 | 9ae613af | Christos Stavrakakis | network6 = ipaddr.IPv6Network(subnet6, strict=True)
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237 | 9ae613af | Christos Stavrakakis | except ValueError: |
238 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Invalid network IPv6 subnet") |
239 | 9ae613af | Christos Stavrakakis | if gateway6:
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240 | 9ae613af | Christos Stavrakakis | try:
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241 | 9ae613af | Christos Stavrakakis | gateway6 = ipaddr.IPv6Address(gateway6) |
242 | 9ae613af | Christos Stavrakakis | except ValueError: |
243 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Invalid network IPv6 gateway") |
244 | 9ae613af | Christos Stavrakakis | if not gateway6 in network6: |
245 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Invalid network IPv6 gateway") |
246 | d368ec0c | Christos Stavrakakis | |
247 | d368ec0c | Christos Stavrakakis | |
248 | b14725eb | Christos Stavrakakis | def validate_network_size(cidr_block): |
249 | b14725eb | Christos Stavrakakis | """Return True if network size is allowed."""
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250 | b14725eb | Christos Stavrakakis | return cidr_block <= 29 and cidr_block > MAX_CIDR_BLOCK |
251 | b14725eb | Christos Stavrakakis | |
252 | b14725eb | Christos Stavrakakis | |
253 | adc46059 | Christos Stavrakakis | def allocate_public_address(backend): |
254 | adc46059 | Christos Stavrakakis | """Allocate a public IP for a vm."""
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255 | adc46059 | Christos Stavrakakis | for network in backend_public_networks(backend): |
256 | adc46059 | Christos Stavrakakis | try:
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257 | adc46059 | Christos Stavrakakis | address = get_network_free_address(network) |
258 | adc46059 | Christos Stavrakakis | return (network, address)
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259 | adc46059 | Christos Stavrakakis | except EmptyPool:
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260 | adc46059 | Christos Stavrakakis | pass
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261 | adc46059 | Christos Stavrakakis | return (None, None) |
262 | adc46059 | Christos Stavrakakis | |
263 | adc46059 | Christos Stavrakakis | |
264 | dca7553e | Christos Stavrakakis | def get_public_ip(backend): |
265 | dca7553e | Christos Stavrakakis | """Reserve an IP from a public network.
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266 | dca7553e | Christos Stavrakakis |
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267 | dca7553e | Christos Stavrakakis | This method should run inside a transaction.
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268 | dca7553e | Christos Stavrakakis |
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269 | dca7553e | Christos Stavrakakis | """
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270 | 85919a0f | Christos Stavrakakis | |
271 | 85919a0f | Christos Stavrakakis | # Guarantee exclusive access to backend, because accessing the IP pools of
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272 | 85919a0f | Christos Stavrakakis | # the backend networks may result in a deadlock with backend allocator
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273 | 85919a0f | Christos Stavrakakis | # which also checks that backend networks have a free IP.
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274 | 85919a0f | Christos Stavrakakis | backend = Backend.objects.select_for_update().get(id=backend.id) |
275 | 85919a0f | Christos Stavrakakis | |
276 | dca7553e | Christos Stavrakakis | address = None
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277 | 74459c12 | Christos Stavrakakis | if settings.PUBLIC_USE_POOL:
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278 | dca7553e | Christos Stavrakakis | (network, address) = allocate_public_address(backend) |
279 | dca7553e | Christos Stavrakakis | else:
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280 | dca7553e | Christos Stavrakakis | for net in list(backend_public_networks(backend)): |
281 | dca7553e | Christos Stavrakakis | pool = net.get_pool() |
282 | dca7553e | Christos Stavrakakis | if not pool.empty(): |
283 | dca7553e | Christos Stavrakakis | address = 'pool'
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284 | dca7553e | Christos Stavrakakis | network = net |
285 | dca7553e | Christos Stavrakakis | break
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286 | dca7553e | Christos Stavrakakis | if address is None: |
287 | dca7553e | Christos Stavrakakis | log.error("Public networks of backend %s are full", backend)
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288 | bd40abfa | Christos Stavrakakis | raise faults.OverLimit("Can not allocate IP for new machine." |
289 | dca7553e | Christos Stavrakakis | " Public networks are full.")
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290 | dca7553e | Christos Stavrakakis | return (network, address)
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291 | dca7553e | Christos Stavrakakis | |
292 | dca7553e | Christos Stavrakakis | |
293 | 7fede91e | Christos Stavrakakis | def backend_public_networks(backend): |
294 | 7fede91e | Christos Stavrakakis | """Return available public networks of the backend.
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295 | 7fede91e | Christos Stavrakakis |
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296 | 7fede91e | Christos Stavrakakis | Iterator for non-deleted public networks that are available
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297 | 7fede91e | Christos Stavrakakis | to the specified backend.
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298 | 7fede91e | Christos Stavrakakis |
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299 | 7fede91e | Christos Stavrakakis | """
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300 | 7fede91e | Christos Stavrakakis | for network in Network.objects.filter(public=True, deleted=False): |
301 | 7fede91e | Christos Stavrakakis | if BackendNetwork.objects.filter(network=network,
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302 | 7fede91e | Christos Stavrakakis | backend=backend).exists(): |
303 | 7fede91e | Christos Stavrakakis | yield network
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304 | 7fede91e | Christos Stavrakakis | |
305 | 7fede91e | Christos Stavrakakis | |
306 | 7fede91e | Christos Stavrakakis | def get_network_free_address(network): |
307 | 7fede91e | Christos Stavrakakis | """Reserve an IP address from the IP Pool of the network.
|
308 | 7fede91e | Christos Stavrakakis |
|
309 | fdc94944 | Christos Stavrakakis | Raises EmptyPool
|
310 | 7fede91e | Christos Stavrakakis |
|
311 | 7fede91e | Christos Stavrakakis | """
|
312 | 7fede91e | Christos Stavrakakis | |
313 | fdc94944 | Christos Stavrakakis | pool = network.get_pool() |
314 | fdc94944 | Christos Stavrakakis | address = pool.get() |
315 | 7fede91e | Christos Stavrakakis | pool.save() |
316 | 7fede91e | Christos Stavrakakis | return address
|
317 | 7fede91e | Christos Stavrakakis | |
318 | 7fede91e | Christos Stavrakakis | |
319 | d44c236b | Giorgos Verigakis | def get_nic(machine, network): |
320 | d44c236b | Giorgos Verigakis | try:
|
321 | d44c236b | Giorgos Verigakis | return NetworkInterface.objects.get(machine=machine, network=network)
|
322 | d44c236b | Giorgos Verigakis | except NetworkInterface.DoesNotExist:
|
323 | bd40abfa | Christos Stavrakakis | raise faults.ItemNotFound('Server not connected to this network.') |
324 | d44c236b | Giorgos Verigakis | |
325 | 7fede91e | Christos Stavrakakis | |
326 | 08b079e2 | Stavros Sachtouris | def get_nic_from_index(vm, nic_index): |
327 | 08b079e2 | Stavros Sachtouris | """Returns the nic_index-th nic of a vm
|
328 | 08b079e2 | Stavros Sachtouris | Error Response Codes: itemNotFound (404), badMediaType (415)
|
329 | 08b079e2 | Stavros Sachtouris | """
|
330 | 08b079e2 | Stavros Sachtouris | matching_nics = vm.nics.filter(index=nic_index) |
331 | 08b079e2 | Stavros Sachtouris | matching_nics_len = len(matching_nics)
|
332 | 08b079e2 | Stavros Sachtouris | if matching_nics_len < 1: |
333 | bd40abfa | Christos Stavrakakis | raise faults.ItemNotFound('NIC not found on VM') |
334 | 08b079e2 | Stavros Sachtouris | elif matching_nics_len > 1: |
335 | bd40abfa | Christos Stavrakakis | raise faults.BadMediaType('NIC index conflict on VM') |
336 | 08b079e2 | Stavros Sachtouris | nic = matching_nics[0]
|
337 | 08b079e2 | Stavros Sachtouris | return nic
|
338 | e2ee7808 | Giorgos Verigakis | |
339 | 7fede91e | Christos Stavrakakis | |
340 | 432fc8c3 | Giorgos Verigakis | def render_metadata(request, metadata, use_values=False, status=200): |
341 | 432fc8c3 | Giorgos Verigakis | if request.serialization == 'xml': |
342 | 432fc8c3 | Giorgos Verigakis | data = render_to_string('metadata.xml', {'metadata': metadata}) |
343 | 432fc8c3 | Giorgos Verigakis | else:
|
344 | b36f78fa | Giorgos Verigakis | if use_values:
|
345 | b36f78fa | Giorgos Verigakis | d = {'metadata': {'values': metadata}} |
346 | b36f78fa | Giorgos Verigakis | else:
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347 | b36f78fa | Giorgos Verigakis | d = {'metadata': metadata}
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348 | 432fc8c3 | Giorgos Verigakis | data = json.dumps(d) |
349 | 432fc8c3 | Giorgos Verigakis | return HttpResponse(data, status=status)
|
350 | 432fc8c3 | Giorgos Verigakis | |
351 | a08e4270 | Vangelis Koukis | |
352 | 432fc8c3 | Giorgos Verigakis | def render_meta(request, meta, status=200): |
353 | 432fc8c3 | Giorgos Verigakis | if request.serialization == 'xml': |
354 | 6ef51e9f | Giorgos Verigakis | data = render_to_string('meta.xml', dict(key=key, val=val)) |
355 | 432fc8c3 | Giorgos Verigakis | else:
|
356 | 6ef51e9f | Giorgos Verigakis | data = json.dumps(dict(meta=meta))
|
357 | 432fc8c3 | Giorgos Verigakis | return HttpResponse(data, status=status)
|
358 | 432fc8c3 | Giorgos Verigakis | |
359 | a08e4270 | Vangelis Koukis | |
360 | 08b079e2 | Stavros Sachtouris | def construct_nic_id(nic): |
361 | 08b079e2 | Stavros Sachtouris | return "-".join(["nic", unicode(nic.machine.id), unicode(nic.index)]) |
362 | 6dd70a5c | Christos Stavrakakis | |
363 | 6dd70a5c | Christos Stavrakakis | |
364 | dca7553e | Christos Stavrakakis | def verify_personality(personality): |
365 | 6ec4694f | Christos Stavrakakis | """Verify that a a list of personalities is well formed"""
|
366 | 006c6249 | Christos Stavrakakis | if len(personality) > settings.MAX_PERSONALITY: |
367 | bd40abfa | Christos Stavrakakis | raise faults.OverLimit("Maximum number of personalities" |
368 | e440e835 | Christos Stavrakakis | " exceeded")
|
369 | dca7553e | Christos Stavrakakis | for p in personality: |
370 | dca7553e | Christos Stavrakakis | # Verify that personalities are well-formed
|
371 | dca7553e | Christos Stavrakakis | try:
|
372 | dca7553e | Christos Stavrakakis | assert isinstance(p, dict) |
373 | dca7553e | Christos Stavrakakis | keys = set(p.keys())
|
374 | dca7553e | Christos Stavrakakis | allowed = set(['contents', 'group', 'mode', 'owner', 'path']) |
375 | dca7553e | Christos Stavrakakis | assert keys.issubset(allowed)
|
376 | dca7553e | Christos Stavrakakis | contents = p['contents']
|
377 | dca7553e | Christos Stavrakakis | if len(contents) > settings.MAX_PERSONALITY_SIZE: |
378 | dca7553e | Christos Stavrakakis | # No need to decode if contents already exceed limit
|
379 | bd40abfa | Christos Stavrakakis | raise faults.OverLimit("Maximum size of personality exceeded") |
380 | dca7553e | Christos Stavrakakis | if len(b64decode(contents)) > settings.MAX_PERSONALITY_SIZE: |
381 | bd40abfa | Christos Stavrakakis | raise faults.OverLimit("Maximum size of personality exceeded") |
382 | dca7553e | Christos Stavrakakis | except AssertionError: |
383 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Malformed personality in request") |
384 | 2a599282 | Christos Stavrakakis | |
385 | 2a599282 | Christos Stavrakakis | |
386 | b7d38981 | Dimitris Aragiorgis | def values_from_flavor(flavor): |
387 | b7d38981 | Dimitris Aragiorgis | """Get Ganeti connectivity info from flavor type.
|
388 | b7d38981 | Dimitris Aragiorgis |
|
389 | b7d38981 | Dimitris Aragiorgis | If link or mac_prefix equals to "pool", then the resources
|
390 | b7d38981 | Dimitris Aragiorgis | are allocated from the corresponding Pools.
|
391 | b7d38981 | Dimitris Aragiorgis |
|
392 | b7d38981 | Dimitris Aragiorgis | """
|
393 | b7d38981 | Dimitris Aragiorgis | try:
|
394 | b7d38981 | Dimitris Aragiorgis | flavor = Network.FLAVORS[flavor] |
395 | b7d38981 | Dimitris Aragiorgis | except KeyError: |
396 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Unknown network flavor") |
397 | b7d38981 | Dimitris Aragiorgis | |
398 | b7d38981 | Dimitris Aragiorgis | mode = flavor.get("mode")
|
399 | b7d38981 | Dimitris Aragiorgis | |
400 | b7d38981 | Dimitris Aragiorgis | link = flavor.get("link")
|
401 | b7d38981 | Dimitris Aragiorgis | if link == "pool": |
402 | b7d38981 | Dimitris Aragiorgis | link = allocate_resource("bridge")
|
403 | b7d38981 | Dimitris Aragiorgis | |
404 | b7d38981 | Dimitris Aragiorgis | mac_prefix = flavor.get("mac_prefix")
|
405 | b7d38981 | Dimitris Aragiorgis | if mac_prefix == "pool": |
406 | b7d38981 | Dimitris Aragiorgis | mac_prefix = allocate_resource("mac_prefix")
|
407 | b7d38981 | Dimitris Aragiorgis | |
408 | b7d38981 | Dimitris Aragiorgis | tags = flavor.get("tags")
|
409 | b7d38981 | Dimitris Aragiorgis | |
410 | b7d38981 | Dimitris Aragiorgis | return mode, link, mac_prefix, tags
|
411 | b7d38981 | Dimitris Aragiorgis | |
412 | b7d38981 | Dimitris Aragiorgis | |
413 | b7d38981 | Dimitris Aragiorgis | def allocate_resource(res_type): |
414 | b7d38981 | Dimitris Aragiorgis | table = get_pool_table(res_type) |
415 | b7d38981 | Dimitris Aragiorgis | pool = table.get_pool() |
416 | b7d38981 | Dimitris Aragiorgis | value = pool.get() |
417 | b7d38981 | Dimitris Aragiorgis | pool.save() |
418 | b7d38981 | Dimitris Aragiorgis | return value
|
419 | b7d38981 | Dimitris Aragiorgis | |
420 | b7d38981 | Dimitris Aragiorgis | |
421 | b7d38981 | Dimitris Aragiorgis | def release_resource(res_type, value): |
422 | b7d38981 | Dimitris Aragiorgis | table = get_pool_table(res_type) |
423 | b7d38981 | Dimitris Aragiorgis | pool = table.get_pool() |
424 | b7d38981 | Dimitris Aragiorgis | pool.put(value) |
425 | b7d38981 | Dimitris Aragiorgis | pool.save() |
426 | b7d38981 | Dimitris Aragiorgis | |
427 | b7d38981 | Dimitris Aragiorgis | |
428 | b7d38981 | Dimitris Aragiorgis | def get_pool_table(res_type): |
429 | b7d38981 | Dimitris Aragiorgis | if res_type == "bridge": |
430 | b7d38981 | Dimitris Aragiorgis | return BridgePoolTable
|
431 | b7d38981 | Dimitris Aragiorgis | elif res_type == "mac_prefix": |
432 | b7d38981 | Dimitris Aragiorgis | return MacPrefixPoolTable
|
433 | b7d38981 | Dimitris Aragiorgis | else:
|
434 | b7d38981 | Dimitris Aragiorgis | raise Exception("Unknown resource type") |
435 | 55f562a4 | Kostas Papadimitriou | |
436 | 55f562a4 | Kostas Papadimitriou | |
437 | 55f562a4 | Kostas Papadimitriou | def get_existing_users(): |
438 | 55f562a4 | Kostas Papadimitriou | """
|
439 | 55f562a4 | Kostas Papadimitriou | Retrieve user ids stored in cyclades user agnostic models.
|
440 | 55f562a4 | Kostas Papadimitriou | """
|
441 | 55f562a4 | Kostas Papadimitriou | # also check PublicKeys a user with no servers/networks exist
|
442 | 55f562a4 | Kostas Papadimitriou | from synnefo.ui.userdata.models import PublicKeyPair |
443 | 55f562a4 | Kostas Papadimitriou | from synnefo.db.models import VirtualMachine, Network |
444 | 55f562a4 | Kostas Papadimitriou | |
445 | 55f562a4 | Kostas Papadimitriou | keypairusernames = PublicKeyPair.objects.filter().values_list('user',
|
446 | e440e835 | Christos Stavrakakis | flat=True)
|
447 | 55f562a4 | Kostas Papadimitriou | serverusernames = VirtualMachine.objects.filter().values_list('userid',
|
448 | e440e835 | Christos Stavrakakis | flat=True)
|
449 | 55f562a4 | Kostas Papadimitriou | networkusernames = Network.objects.filter().values_list('userid',
|
450 | 55f562a4 | Kostas Papadimitriou | flat=True)
|
451 | 55f562a4 | Kostas Papadimitriou | |
452 | e440e835 | Christos Stavrakakis | return set(list(keypairusernames) + list(serverusernames) + |
453 | e440e835 | Christos Stavrakakis | list(networkusernames)) |