root / snf-cyclades-app / synnefo / api / util.py @ 15c05cb7
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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 | 1b696c26 | Christos Stavrakakis | from synnefo.cyclades_settings import cyclades_services, BASE_HOST |
70 | 1b696c26 | Christos Stavrakakis | from synnefo.lib.services import get_service_path |
71 | 1b696c26 | Christos Stavrakakis | from synnefo.lib import join_urls |
72 | 1b696c26 | Christos Stavrakakis | |
73 | 1b696c26 | Christos Stavrakakis | COMPUTE_URL = \ |
74 | 1b696c26 | Christos Stavrakakis | join_urls(BASE_HOST, |
75 | 1b696c26 | Christos Stavrakakis | get_service_path(cyclades_services, "compute", version="v2.0")) |
76 | 1b696c26 | Christos Stavrakakis | SERVERS_URL = join_urls(COMPUTE_URL, "servers/")
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77 | 1b696c26 | Christos Stavrakakis | NETWORKS_URL = join_urls(COMPUTE_URL, "networks/")
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78 | 1b696c26 | Christos Stavrakakis | FLAVORS_URL = join_urls(COMPUTE_URL, "flavors/")
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79 | 1b696c26 | Christos Stavrakakis | IMAGES_URL = join_urls(COMPUTE_URL, "images/")
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80 | 1b696c26 | Christos Stavrakakis | PLANKTON_URL = \ |
81 | 1b696c26 | Christos Stavrakakis | join_urls(BASE_HOST, |
82 | 1b696c26 | Christos Stavrakakis | get_service_path(cyclades_services, "image", version="v1.0")) |
83 | 1b696c26 | Christos Stavrakakis | IMAGES_PLANKTON_URL = join_urls(PLANKTON_URL, "images/")
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84 | 1b696c26 | Christos Stavrakakis | |
85 | 9e98ba3c | Giorgos Verigakis | |
86 | 9e98ba3c | Giorgos Verigakis | log = getLogger('synnefo.api')
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87 | 9e98ba3c | Giorgos Verigakis | |
88 | 7e2f9d4b | Giorgos Verigakis | |
89 | dca2a31f | Giorgos Verigakis | def random_password(): |
90 | dca2a31f | Giorgos Verigakis | """Generates a random password
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91 | ce55f211 | Kostas Papadimitriou |
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92 | 62eac5a6 | Giorgos Verigakis | We generate a windows compliant password: it must contain at least
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93 | dca2a31f | Giorgos Verigakis | one charachter from each of the groups: upper case, lower case, digits.
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94 | dca2a31f | Giorgos Verigakis | """
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95 | ce55f211 | Kostas Papadimitriou | |
96 | dca2a31f | Giorgos Verigakis | pool = lowercase + uppercase + digits |
97 | dca2a31f | Giorgos Verigakis | lowerset = set(lowercase)
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98 | dca2a31f | Giorgos Verigakis | upperset = set(uppercase)
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99 | dca2a31f | Giorgos Verigakis | digitset = set(digits)
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100 | dca2a31f | Giorgos Verigakis | length = 10
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101 | ce55f211 | Kostas Papadimitriou | |
102 | 62eac5a6 | Giorgos Verigakis | password = ''.join(choice(pool) for i in range(length - 2)) |
103 | ce55f211 | Kostas Papadimitriou | |
104 | 62eac5a6 | Giorgos Verigakis | # Make sure the password is compliant
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105 | 62eac5a6 | Giorgos Verigakis | chars = set(password)
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106 | 62eac5a6 | Giorgos Verigakis | if not chars & lowerset: |
107 | 62eac5a6 | Giorgos Verigakis | password += choice(lowercase) |
108 | 62eac5a6 | Giorgos Verigakis | if not chars & upperset: |
109 | 62eac5a6 | Giorgos Verigakis | password += choice(uppercase) |
110 | 62eac5a6 | Giorgos Verigakis | if not chars & digitset: |
111 | 62eac5a6 | Giorgos Verigakis | password += choice(digits) |
112 | ce55f211 | Kostas Papadimitriou | |
113 | 62eac5a6 | Giorgos Verigakis | # Pad if necessary to reach required length
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114 | 62eac5a6 | Giorgos Verigakis | password += ''.join(choice(pool) for i in range(length - len(password))) |
115 | ce55f211 | Kostas Papadimitriou | |
116 | dca2a31f | Giorgos Verigakis | return password
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117 | dca2a31f | Giorgos Verigakis | |
118 | d8e50a39 | Giorgos Verigakis | |
119 | c738c935 | Giorgos Verigakis | def zeropad(s): |
120 | c738c935 | Giorgos Verigakis | """Add zeros at the end of a string in order to make its length
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121 | c738c935 | Giorgos Verigakis | a multiple of 16."""
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122 | d1387ed7 | Christodoulos Psaltis | |
123 | c738c935 | Giorgos Verigakis | npad = 16 - len(s) % 16 |
124 | c738c935 | Giorgos Verigakis | return s + '\x00' * npad |
125 | c738c935 | Giorgos Verigakis | |
126 | a08e4270 | Vangelis Koukis | |
127 | c738c935 | Giorgos Verigakis | def encrypt(plaintext): |
128 | c738c935 | Giorgos Verigakis | # Make sure key is 32 bytes long
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129 | c738c935 | Giorgos Verigakis | key = sha256(settings.SECRET_KEY).digest() |
130 | d1387ed7 | Christodoulos Psaltis | |
131 | c738c935 | Giorgos Verigakis | aes = AES.new(key) |
132 | c738c935 | Giorgos Verigakis | enc = aes.encrypt(zeropad(plaintext)) |
133 | c738c935 | Giorgos Verigakis | return b64encode(enc)
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134 | c738c935 | Giorgos Verigakis | |
135 | 7e2f9d4b | Giorgos Verigakis | |
136 | 7f2dbcad | Christos Stavrakakis | def get_vm(server_id, user_id, for_update=False, non_deleted=False, |
137 | 7f2dbcad | Christos Stavrakakis | non_suspended=False):
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138 | e221ade2 | Christos Stavrakakis | """Find a VirtualMachine instance based on ID and owner."""
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139 | aa197ee4 | Vangelis Koukis | |
140 | d8e50a39 | Giorgos Verigakis | try:
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141 | d8e50a39 | Giorgos Verigakis | server_id = int(server_id)
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142 | 7f2dbcad | Christos Stavrakakis | servers = VirtualMachine.objects |
143 | 7f2dbcad | Christos Stavrakakis | if for_update:
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144 | 7f2dbcad | Christos Stavrakakis | servers = servers.select_for_update() |
145 | 7f2dbcad | Christos Stavrakakis | vm = servers.get(id=server_id, userid=user_id) |
146 | e221ade2 | Christos Stavrakakis | if non_deleted and vm.deleted: |
147 | 5b0832fc | Christos Stavrakakis | raise faults.BadRequest("Server has been deleted.") |
148 | e221ade2 | Christos Stavrakakis | if non_suspended and vm.suspended: |
149 | bd40abfa | Christos Stavrakakis | raise faults.Forbidden("Administratively Suspended VM") |
150 | 3a522cff | Christos Stavrakakis | return vm
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151 | d8e50a39 | Giorgos Verigakis | except ValueError: |
152 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest('Invalid server ID.') |
153 | d8e50a39 | Giorgos Verigakis | except VirtualMachine.DoesNotExist:
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154 | bd40abfa | Christos Stavrakakis | raise faults.ItemNotFound('Server not found.') |
155 | d8e50a39 | Giorgos Verigakis | |
156 | 7f2dbcad | Christos Stavrakakis | |
157 | 40777cc8 | Giorgos Verigakis | def get_vm_meta(vm, key): |
158 | d8e50a39 | Giorgos Verigakis | """Return a VirtualMachineMetadata instance or raise ItemNotFound."""
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159 | aa197ee4 | Vangelis Koukis | |
160 | d8e50a39 | Giorgos Verigakis | try:
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161 | 40777cc8 | Giorgos Verigakis | return VirtualMachineMetadata.objects.get(meta_key=key, vm=vm)
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162 | d8e50a39 | Giorgos Verigakis | except VirtualMachineMetadata.DoesNotExist:
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163 | bd40abfa | Christos Stavrakakis | raise faults.ItemNotFound('Metadata key not found.') |
164 | d8e50a39 | Giorgos Verigakis | |
165 | a08e4270 | Vangelis Koukis | |
166 | 6ef51e9f | Giorgos Verigakis | def get_image(image_id, user_id): |
167 | d8e50a39 | Giorgos Verigakis | """Return an Image instance or raise ItemNotFound."""
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168 | aa197ee4 | Vangelis Koukis | |
169 | b3fd98ae | Christos Stavrakakis | with image_backend(user_id) as backend: |
170 | cda71050 | Christos Stavrakakis | return backend.get_image(image_id)
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171 | 3a9b3cde | Giorgos Verigakis | |
172 | a08e4270 | Vangelis Koukis | |
173 | dca7553e | Christos Stavrakakis | def get_image_dict(image_id, user_id): |
174 | dca7553e | Christos Stavrakakis | image = {} |
175 | dca7553e | Christos Stavrakakis | img = get_image(image_id, user_id) |
176 | dca7553e | Christos Stavrakakis | properties = img.get('properties', {})
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177 | bcd80cd9 | Christos Stavrakakis | image["id"] = img["id"] |
178 | bcd80cd9 | Christos Stavrakakis | image["name"] = img["name"] |
179 | dca7553e | Christos Stavrakakis | image['backend_id'] = img['location'] |
180 | dca7553e | Christos Stavrakakis | image['format'] = img['disk_format'] |
181 | e440e835 | Christos Stavrakakis | image['metadata'] = dict((key.upper(), val) |
182 | dca7553e | Christos Stavrakakis | for key, val in properties.items()) |
183 | 2cb812be | Christos Stavrakakis | image['checksum'] = img['checksum'] |
184 | 2cb812be | Christos Stavrakakis | |
185 | dca7553e | Christos Stavrakakis | return image
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186 | dca7553e | Christos Stavrakakis | |
187 | dca7553e | Christos Stavrakakis | |
188 | aa8230bd | Christos Stavrakakis | def get_flavor(flavor_id, include_deleted=False): |
189 | 529178b1 | Giorgos Verigakis | """Return a Flavor instance or raise ItemNotFound."""
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190 | aa197ee4 | Vangelis Koukis | |
191 | 529178b1 | Giorgos Verigakis | try:
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192 | 529178b1 | Giorgos Verigakis | flavor_id = int(flavor_id)
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193 | aa8230bd | Christos Stavrakakis | if include_deleted:
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194 | aa8230bd | Christos Stavrakakis | return Flavor.objects.get(id=flavor_id)
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195 | aa8230bd | Christos Stavrakakis | else:
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196 | aa8230bd | Christos Stavrakakis | return Flavor.objects.get(id=flavor_id, deleted=include_deleted)
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197 | 6ef51e9f | Giorgos Verigakis | except (ValueError, Flavor.DoesNotExist): |
198 | bd40abfa | Christos Stavrakakis | raise faults.ItemNotFound('Flavor not found.') |
199 | d8e50a39 | Giorgos Verigakis | |
200 | a08e4270 | Vangelis Koukis | |
201 | 9dcb5b8a | Christos Stavrakakis | def get_flavor_provider(flavor): |
202 | 9dcb5b8a | Christos Stavrakakis | """Extract provider from disk template.
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203 | 9dcb5b8a | Christos Stavrakakis |
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204 | 9dcb5b8a | Christos Stavrakakis | Provider for `ext` disk_template is encoded in the disk template
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205 | 9dcb5b8a | Christos Stavrakakis | name, which is formed `ext_<provider_name>`. Provider is None
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206 | 9dcb5b8a | Christos Stavrakakis | for all other disk templates.
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207 | 9dcb5b8a | Christos Stavrakakis |
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208 | 9dcb5b8a | Christos Stavrakakis | """
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209 | 9dcb5b8a | Christos Stavrakakis | disk_template = flavor.disk_template |
210 | 9dcb5b8a | Christos Stavrakakis | provider = None
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211 | 9dcb5b8a | Christos Stavrakakis | if disk_template.startswith("ext"): |
212 | 9dcb5b8a | Christos Stavrakakis | disk_template, provider = disk_template.split("_", 1) |
213 | 9dcb5b8a | Christos Stavrakakis | return disk_template, provider
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214 | 9dcb5b8a | Christos Stavrakakis | |
215 | 9dcb5b8a | Christos Stavrakakis | |
216 | d2e73c0c | Christos Stavrakakis | def get_network(network_id, user_id, for_update=False): |
217 | e2ee7808 | Giorgos Verigakis | """Return a Network instance or raise ItemNotFound."""
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218 | aa197ee4 | Vangelis Koukis | |
219 | e2ee7808 | Giorgos Verigakis | try:
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220 | 7fede91e | Christos Stavrakakis | network_id = int(network_id)
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221 | d3406fbc | Christos Stavrakakis | objects = Network.objects |
222 | d2e73c0c | Christos Stavrakakis | if for_update:
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223 | d3406fbc | Christos Stavrakakis | objects = objects.select_for_update() |
224 | d3406fbc | Christos Stavrakakis | return objects.get(Q(userid=user_id) | Q(public=True), id=network_id) |
225 | 6ef51e9f | Giorgos Verigakis | except (ValueError, Network.DoesNotExist): |
226 | bd40abfa | Christos Stavrakakis | raise faults.ItemNotFound('Network not found.') |
227 | e2ee7808 | Giorgos Verigakis | |
228 | a08e4270 | Vangelis Koukis | |
229 | 9ae613af | Christos Stavrakakis | def validate_network_params(subnet, gateway=None, subnet6=None, gateway6=None): |
230 | d368ec0c | Christos Stavrakakis | try:
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231 | d368ec0c | Christos Stavrakakis | # Use strict option to not all subnets with host bits set
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232 | 9ae613af | Christos Stavrakakis | network = ipaddr.IPv4Network(subnet, strict=True)
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233 | d368ec0c | Christos Stavrakakis | except ValueError: |
234 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Invalid network IPv4 subnet") |
235 | d368ec0c | Christos Stavrakakis | |
236 | d368ec0c | Christos Stavrakakis | # Check that network size is allowed!
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237 | d368ec0c | Christos Stavrakakis | if not validate_network_size(network.prefixlen): |
238 | bd40abfa | Christos Stavrakakis | raise faults.OverLimit(message="Unsupported network size", |
239 | 9ae613af | Christos Stavrakakis | details="Network mask must be in range (%s, 29]" %
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240 | 9ae613af | Christos Stavrakakis | MAX_CIDR_BLOCK) |
241 | 9ae613af | Christos Stavrakakis | |
242 | 9ae613af | Christos Stavrakakis | # Check that gateway belongs to network
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243 | 9ae613af | Christos Stavrakakis | if gateway:
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244 | 9ae613af | Christos Stavrakakis | try:
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245 | 9ae613af | Christos Stavrakakis | gateway = ipaddr.IPv4Address(gateway) |
246 | 9ae613af | Christos Stavrakakis | except ValueError: |
247 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Invalid network IPv4 gateway") |
248 | 9ae613af | Christos Stavrakakis | if not gateway in network: |
249 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Invalid network IPv4 gateway") |
250 | 9ae613af | Christos Stavrakakis | |
251 | 9ae613af | Christos Stavrakakis | if subnet6:
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252 | 9ae613af | Christos Stavrakakis | try:
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253 | 9ae613af | Christos Stavrakakis | # Use strict option to not all subnets with host bits set
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254 | 9ae613af | Christos Stavrakakis | network6 = ipaddr.IPv6Network(subnet6, strict=True)
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255 | 9ae613af | Christos Stavrakakis | except ValueError: |
256 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Invalid network IPv6 subnet") |
257 | 9ae613af | Christos Stavrakakis | if gateway6:
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258 | 9ae613af | Christos Stavrakakis | try:
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259 | 9ae613af | Christos Stavrakakis | gateway6 = ipaddr.IPv6Address(gateway6) |
260 | 9ae613af | Christos Stavrakakis | except ValueError: |
261 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Invalid network IPv6 gateway") |
262 | 9ae613af | Christos Stavrakakis | if not gateway6 in network6: |
263 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Invalid network IPv6 gateway") |
264 | d368ec0c | Christos Stavrakakis | |
265 | d368ec0c | Christos Stavrakakis | |
266 | b14725eb | Christos Stavrakakis | def validate_network_size(cidr_block): |
267 | b14725eb | Christos Stavrakakis | """Return True if network size is allowed."""
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268 | b14725eb | Christos Stavrakakis | return cidr_block <= 29 and cidr_block > MAX_CIDR_BLOCK |
269 | b14725eb | Christos Stavrakakis | |
270 | b14725eb | Christos Stavrakakis | |
271 | adc46059 | Christos Stavrakakis | def allocate_public_address(backend): |
272 | adc46059 | Christos Stavrakakis | """Allocate a public IP for a vm."""
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273 | adc46059 | Christos Stavrakakis | for network in backend_public_networks(backend): |
274 | adc46059 | Christos Stavrakakis | try:
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275 | adc46059 | Christos Stavrakakis | address = get_network_free_address(network) |
276 | adc46059 | Christos Stavrakakis | return (network, address)
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277 | adc46059 | Christos Stavrakakis | except EmptyPool:
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278 | adc46059 | Christos Stavrakakis | pass
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279 | adc46059 | Christos Stavrakakis | return (None, None) |
280 | adc46059 | Christos Stavrakakis | |
281 | adc46059 | Christos Stavrakakis | |
282 | dca7553e | Christos Stavrakakis | def get_public_ip(backend): |
283 | dca7553e | Christos Stavrakakis | """Reserve an IP from a public network.
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284 | dca7553e | Christos Stavrakakis |
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285 | dca7553e | Christos Stavrakakis | This method should run inside a transaction.
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286 | dca7553e | Christos Stavrakakis |
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287 | dca7553e | Christos Stavrakakis | """
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288 | 85919a0f | Christos Stavrakakis | |
289 | 85919a0f | Christos Stavrakakis | # Guarantee exclusive access to backend, because accessing the IP pools of
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290 | 85919a0f | Christos Stavrakakis | # the backend networks may result in a deadlock with backend allocator
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291 | 85919a0f | Christos Stavrakakis | # which also checks that backend networks have a free IP.
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292 | 85919a0f | Christos Stavrakakis | backend = Backend.objects.select_for_update().get(id=backend.id) |
293 | 85919a0f | Christos Stavrakakis | |
294 | dca7553e | Christos Stavrakakis | address = None
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295 | 74459c12 | Christos Stavrakakis | if settings.PUBLIC_USE_POOL:
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296 | dca7553e | Christos Stavrakakis | (network, address) = allocate_public_address(backend) |
297 | dca7553e | Christos Stavrakakis | else:
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298 | dca7553e | Christos Stavrakakis | for net in list(backend_public_networks(backend)): |
299 | dca7553e | Christos Stavrakakis | pool = net.get_pool() |
300 | dca7553e | Christos Stavrakakis | if not pool.empty(): |
301 | dca7553e | Christos Stavrakakis | address = 'pool'
|
302 | dca7553e | Christos Stavrakakis | network = net |
303 | dca7553e | Christos Stavrakakis | break
|
304 | dca7553e | Christos Stavrakakis | if address is None: |
305 | dca7553e | Christos Stavrakakis | log.error("Public networks of backend %s are full", backend)
|
306 | bd40abfa | Christos Stavrakakis | raise faults.OverLimit("Can not allocate IP for new machine." |
307 | dca7553e | Christos Stavrakakis | " Public networks are full.")
|
308 | dca7553e | Christos Stavrakakis | return (network, address)
|
309 | dca7553e | Christos Stavrakakis | |
310 | dca7553e | Christos Stavrakakis | |
311 | 7fede91e | Christos Stavrakakis | def backend_public_networks(backend): |
312 | 7fede91e | Christos Stavrakakis | """Return available public networks of the backend.
|
313 | 7fede91e | Christos Stavrakakis |
|
314 | 7fede91e | Christos Stavrakakis | Iterator for non-deleted public networks that are available
|
315 | 7fede91e | Christos Stavrakakis | to the specified backend.
|
316 | 7fede91e | Christos Stavrakakis |
|
317 | 7fede91e | Christos Stavrakakis | """
|
318 | 6dafedf6 | Christos Stavrakakis | for network in Network.objects.filter(public=True, deleted=False, |
319 | 6dafedf6 | Christos Stavrakakis | drained=False):
|
320 | 7fede91e | Christos Stavrakakis | if BackendNetwork.objects.filter(network=network,
|
321 | 7fede91e | Christos Stavrakakis | backend=backend).exists(): |
322 | 7fede91e | Christos Stavrakakis | yield network
|
323 | 7fede91e | Christos Stavrakakis | |
324 | 7fede91e | Christos Stavrakakis | |
325 | 7fede91e | Christos Stavrakakis | def get_network_free_address(network): |
326 | 7fede91e | Christos Stavrakakis | """Reserve an IP address from the IP Pool of the network.
|
327 | 7fede91e | Christos Stavrakakis |
|
328 | fdc94944 | Christos Stavrakakis | Raises EmptyPool
|
329 | 7fede91e | Christos Stavrakakis |
|
330 | 7fede91e | Christos Stavrakakis | """
|
331 | 7fede91e | Christos Stavrakakis | |
332 | fdc94944 | Christos Stavrakakis | pool = network.get_pool() |
333 | fdc94944 | Christos Stavrakakis | address = pool.get() |
334 | 7fede91e | Christos Stavrakakis | pool.save() |
335 | 7fede91e | Christos Stavrakakis | return address
|
336 | 7fede91e | Christos Stavrakakis | |
337 | 7fede91e | Christos Stavrakakis | |
338 | d44c236b | Giorgos Verigakis | def get_nic(machine, network): |
339 | d44c236b | Giorgos Verigakis | try:
|
340 | d44c236b | Giorgos Verigakis | return NetworkInterface.objects.get(machine=machine, network=network)
|
341 | d44c236b | Giorgos Verigakis | except NetworkInterface.DoesNotExist:
|
342 | bd40abfa | Christos Stavrakakis | raise faults.ItemNotFound('Server not connected to this network.') |
343 | d44c236b | Giorgos Verigakis | |
344 | 7fede91e | Christos Stavrakakis | |
345 | 08b079e2 | Stavros Sachtouris | def get_nic_from_index(vm, nic_index): |
346 | 08b079e2 | Stavros Sachtouris | """Returns the nic_index-th nic of a vm
|
347 | 08b079e2 | Stavros Sachtouris | Error Response Codes: itemNotFound (404), badMediaType (415)
|
348 | 08b079e2 | Stavros Sachtouris | """
|
349 | 08b079e2 | Stavros Sachtouris | matching_nics = vm.nics.filter(index=nic_index) |
350 | 08b079e2 | Stavros Sachtouris | matching_nics_len = len(matching_nics)
|
351 | 08b079e2 | Stavros Sachtouris | if matching_nics_len < 1: |
352 | bd40abfa | Christos Stavrakakis | raise faults.ItemNotFound('NIC not found on VM') |
353 | 08b079e2 | Stavros Sachtouris | elif matching_nics_len > 1: |
354 | bd40abfa | Christos Stavrakakis | raise faults.BadMediaType('NIC index conflict on VM') |
355 | 08b079e2 | Stavros Sachtouris | nic = matching_nics[0]
|
356 | 08b079e2 | Stavros Sachtouris | return nic
|
357 | e2ee7808 | Giorgos Verigakis | |
358 | 7fede91e | Christos Stavrakakis | |
359 | 432fc8c3 | Giorgos Verigakis | def render_metadata(request, metadata, use_values=False, status=200): |
360 | 432fc8c3 | Giorgos Verigakis | if request.serialization == 'xml': |
361 | 432fc8c3 | Giorgos Verigakis | data = render_to_string('metadata.xml', {'metadata': metadata}) |
362 | 432fc8c3 | Giorgos Verigakis | else:
|
363 | b36f78fa | Giorgos Verigakis | if use_values:
|
364 | b36f78fa | Giorgos Verigakis | d = {'metadata': {'values': metadata}} |
365 | b36f78fa | Giorgos Verigakis | else:
|
366 | b36f78fa | Giorgos Verigakis | d = {'metadata': metadata}
|
367 | 432fc8c3 | Giorgos Verigakis | data = json.dumps(d) |
368 | 432fc8c3 | Giorgos Verigakis | return HttpResponse(data, status=status)
|
369 | 432fc8c3 | Giorgos Verigakis | |
370 | a08e4270 | Vangelis Koukis | |
371 | 432fc8c3 | Giorgos Verigakis | def render_meta(request, meta, status=200): |
372 | 432fc8c3 | Giorgos Verigakis | if request.serialization == 'xml': |
373 | 6ef51e9f | Giorgos Verigakis | data = render_to_string('meta.xml', dict(key=key, val=val)) |
374 | 432fc8c3 | Giorgos Verigakis | else:
|
375 | 6ef51e9f | Giorgos Verigakis | data = json.dumps(dict(meta=meta))
|
376 | 432fc8c3 | Giorgos Verigakis | return HttpResponse(data, status=status)
|
377 | 432fc8c3 | Giorgos Verigakis | |
378 | a08e4270 | Vangelis Koukis | |
379 | 08b079e2 | Stavros Sachtouris | def construct_nic_id(nic): |
380 | 08b079e2 | Stavros Sachtouris | return "-".join(["nic", unicode(nic.machine.id), unicode(nic.index)]) |
381 | 6dd70a5c | Christos Stavrakakis | |
382 | 6dd70a5c | Christos Stavrakakis | |
383 | dca7553e | Christos Stavrakakis | def verify_personality(personality): |
384 | 6ec4694f | Christos Stavrakakis | """Verify that a a list of personalities is well formed"""
|
385 | 006c6249 | Christos Stavrakakis | if len(personality) > settings.MAX_PERSONALITY: |
386 | bd40abfa | Christos Stavrakakis | raise faults.OverLimit("Maximum number of personalities" |
387 | e440e835 | Christos Stavrakakis | " exceeded")
|
388 | dca7553e | Christos Stavrakakis | for p in personality: |
389 | dca7553e | Christos Stavrakakis | # Verify that personalities are well-formed
|
390 | dca7553e | Christos Stavrakakis | try:
|
391 | dca7553e | Christos Stavrakakis | assert isinstance(p, dict) |
392 | dca7553e | Christos Stavrakakis | keys = set(p.keys())
|
393 | dca7553e | Christos Stavrakakis | allowed = set(['contents', 'group', 'mode', 'owner', 'path']) |
394 | dca7553e | Christos Stavrakakis | assert keys.issubset(allowed)
|
395 | dca7553e | Christos Stavrakakis | contents = p['contents']
|
396 | dca7553e | Christos Stavrakakis | if len(contents) > settings.MAX_PERSONALITY_SIZE: |
397 | dca7553e | Christos Stavrakakis | # No need to decode if contents already exceed limit
|
398 | bd40abfa | Christos Stavrakakis | raise faults.OverLimit("Maximum size of personality exceeded") |
399 | dca7553e | Christos Stavrakakis | if len(b64decode(contents)) > settings.MAX_PERSONALITY_SIZE: |
400 | bd40abfa | Christos Stavrakakis | raise faults.OverLimit("Maximum size of personality exceeded") |
401 | dca7553e | Christos Stavrakakis | except AssertionError: |
402 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Malformed personality in request") |
403 | 2a599282 | Christos Stavrakakis | |
404 | 2a599282 | Christos Stavrakakis | |
405 | b7d38981 | Dimitris Aragiorgis | def values_from_flavor(flavor): |
406 | b7d38981 | Dimitris Aragiorgis | """Get Ganeti connectivity info from flavor type.
|
407 | b7d38981 | Dimitris Aragiorgis |
|
408 | b7d38981 | Dimitris Aragiorgis | If link or mac_prefix equals to "pool", then the resources
|
409 | b7d38981 | Dimitris Aragiorgis | are allocated from the corresponding Pools.
|
410 | b7d38981 | Dimitris Aragiorgis |
|
411 | b7d38981 | Dimitris Aragiorgis | """
|
412 | b7d38981 | Dimitris Aragiorgis | try:
|
413 | b7d38981 | Dimitris Aragiorgis | flavor = Network.FLAVORS[flavor] |
414 | b7d38981 | Dimitris Aragiorgis | except KeyError: |
415 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Unknown network flavor") |
416 | b7d38981 | Dimitris Aragiorgis | |
417 | b7d38981 | Dimitris Aragiorgis | mode = flavor.get("mode")
|
418 | b7d38981 | Dimitris Aragiorgis | |
419 | b7d38981 | Dimitris Aragiorgis | link = flavor.get("link")
|
420 | b7d38981 | Dimitris Aragiorgis | if link == "pool": |
421 | b7d38981 | Dimitris Aragiorgis | link = allocate_resource("bridge")
|
422 | b7d38981 | Dimitris Aragiorgis | |
423 | b7d38981 | Dimitris Aragiorgis | mac_prefix = flavor.get("mac_prefix")
|
424 | b7d38981 | Dimitris Aragiorgis | if mac_prefix == "pool": |
425 | b7d38981 | Dimitris Aragiorgis | mac_prefix = allocate_resource("mac_prefix")
|
426 | b7d38981 | Dimitris Aragiorgis | |
427 | b7d38981 | Dimitris Aragiorgis | tags = flavor.get("tags")
|
428 | b7d38981 | Dimitris Aragiorgis | |
429 | b7d38981 | Dimitris Aragiorgis | return mode, link, mac_prefix, tags
|
430 | b7d38981 | Dimitris Aragiorgis | |
431 | b7d38981 | Dimitris Aragiorgis | |
432 | b7d38981 | Dimitris Aragiorgis | def allocate_resource(res_type): |
433 | b7d38981 | Dimitris Aragiorgis | table = get_pool_table(res_type) |
434 | b7d38981 | Dimitris Aragiorgis | pool = table.get_pool() |
435 | b7d38981 | Dimitris Aragiorgis | value = pool.get() |
436 | b7d38981 | Dimitris Aragiorgis | pool.save() |
437 | b7d38981 | Dimitris Aragiorgis | return value
|
438 | b7d38981 | Dimitris Aragiorgis | |
439 | b7d38981 | Dimitris Aragiorgis | |
440 | b7d38981 | Dimitris Aragiorgis | def release_resource(res_type, value): |
441 | b7d38981 | Dimitris Aragiorgis | table = get_pool_table(res_type) |
442 | b7d38981 | Dimitris Aragiorgis | pool = table.get_pool() |
443 | b7d38981 | Dimitris Aragiorgis | pool.put(value) |
444 | b7d38981 | Dimitris Aragiorgis | pool.save() |
445 | b7d38981 | Dimitris Aragiorgis | |
446 | b7d38981 | Dimitris Aragiorgis | |
447 | b7d38981 | Dimitris Aragiorgis | def get_pool_table(res_type): |
448 | b7d38981 | Dimitris Aragiorgis | if res_type == "bridge": |
449 | b7d38981 | Dimitris Aragiorgis | return BridgePoolTable
|
450 | b7d38981 | Dimitris Aragiorgis | elif res_type == "mac_prefix": |
451 | b7d38981 | Dimitris Aragiorgis | return MacPrefixPoolTable
|
452 | b7d38981 | Dimitris Aragiorgis | else:
|
453 | b7d38981 | Dimitris Aragiorgis | raise Exception("Unknown resource type") |
454 | 55f562a4 | Kostas Papadimitriou | |
455 | 55f562a4 | Kostas Papadimitriou | |
456 | 55f562a4 | Kostas Papadimitriou | def get_existing_users(): |
457 | 55f562a4 | Kostas Papadimitriou | """
|
458 | 55f562a4 | Kostas Papadimitriou | Retrieve user ids stored in cyclades user agnostic models.
|
459 | 55f562a4 | Kostas Papadimitriou | """
|
460 | 55f562a4 | Kostas Papadimitriou | # also check PublicKeys a user with no servers/networks exist
|
461 | b47b110d | Kostas Papadimitriou | from synnefo.userdata.models import PublicKeyPair |
462 | 55f562a4 | Kostas Papadimitriou | from synnefo.db.models import VirtualMachine, Network |
463 | 55f562a4 | Kostas Papadimitriou | |
464 | 55f562a4 | Kostas Papadimitriou | keypairusernames = PublicKeyPair.objects.filter().values_list('user',
|
465 | e440e835 | Christos Stavrakakis | flat=True)
|
466 | 55f562a4 | Kostas Papadimitriou | serverusernames = VirtualMachine.objects.filter().values_list('userid',
|
467 | e440e835 | Christos Stavrakakis | flat=True)
|
468 | 55f562a4 | Kostas Papadimitriou | networkusernames = Network.objects.filter().values_list('userid',
|
469 | 55f562a4 | Kostas Papadimitriou | flat=True)
|
470 | 55f562a4 | Kostas Papadimitriou | |
471 | e440e835 | Christos Stavrakakis | return set(list(keypairusernames) + list(serverusernames) + |
472 | e440e835 | Christos Stavrakakis | list(networkusernames))
|
473 | 1b696c26 | Christos Stavrakakis | |
474 | 1b696c26 | Christos Stavrakakis | |
475 | 1b696c26 | Christos Stavrakakis | def vm_to_links(vm_id): |
476 | 73fbaad3 | Christos Stavrakakis | href = join_urls(SERVERS_URL, str(vm_id))
|
477 | 73fbaad3 | Christos Stavrakakis | return [{"rel": rel, "href": href} for rel in ("self", "bookmark")] |
478 | 1b696c26 | Christos Stavrakakis | |
479 | 1b696c26 | Christos Stavrakakis | |
480 | 1b696c26 | Christos Stavrakakis | def network_to_links(network_id): |
481 | 73fbaad3 | Christos Stavrakakis | href = join_urls(NETWORKS_URL, str(network_id))
|
482 | 73fbaad3 | Christos Stavrakakis | return [{"rel": rel, "href": href} for rel in ("self", "bookmark")] |
483 | 1b696c26 | Christos Stavrakakis | |
484 | 1b696c26 | Christos Stavrakakis | |
485 | 1b696c26 | Christos Stavrakakis | def flavor_to_links(flavor_id): |
486 | 73fbaad3 | Christos Stavrakakis | href = join_urls(FLAVORS_URL, str(flavor_id))
|
487 | 73fbaad3 | Christos Stavrakakis | return [{"rel": rel, "href": href} for rel in ("self", "bookmark")] |
488 | 1b696c26 | Christos Stavrakakis | |
489 | 1b696c26 | Christos Stavrakakis | |
490 | 1b696c26 | Christos Stavrakakis | def image_to_links(image_id): |
491 | 73fbaad3 | Christos Stavrakakis | href = join_urls(IMAGES_URL, str(image_id))
|
492 | 73fbaad3 | Christos Stavrakakis | links = [{"rel": rel, "href": href} for rel in ("self", "bookmark")] |
493 | 1b696c26 | Christos Stavrakakis | links.append({"rel": "alternate", |
494 | 73fbaad3 | Christos Stavrakakis | "href": join_urls(IMAGES_PLANKTON_URL, str(image_id))}) |
495 | 1b696c26 | Christos Stavrakakis | return links |