root / snf-cyclades-app / synnefo / api / util.py @ f6ff4b40
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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 | af6a3bc5 | Christos Stavrakakis | BridgePoolTable, MacPrefixPoolTable) |
63 | adc46059 | Christos Stavrakakis | from synnefo.db.pools import EmptyPool |
64 | 6dd70a5c | Christos Stavrakakis | |
65 | 4b3b8688 | Giorgos Verigakis | from synnefo.lib.astakos import get_user |
66 | 2db7d9df | Christos Stavrakakis | from synnefo.plankton.backend import ImageBackend, NotAllowedError |
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 | d8e50a39 | Giorgos Verigakis | class UTC(tzinfo): |
74 | d8e50a39 | Giorgos Verigakis | def utcoffset(self, dt): |
75 | d8e50a39 | Giorgos Verigakis | return timedelta(0) |
76 | aa197ee4 | Vangelis Koukis | |
77 | d8e50a39 | Giorgos Verigakis | def tzname(self, dt): |
78 | d8e50a39 | Giorgos Verigakis | return 'UTC' |
79 | aa197ee4 | Vangelis Koukis | |
80 | d8e50a39 | Giorgos Verigakis | def dst(self, dt): |
81 | d8e50a39 | Giorgos Verigakis | return timedelta(0) |
82 | 7e2f9d4b | Giorgos Verigakis | |
83 | 7e2f9d4b | Giorgos Verigakis | |
84 | d8e50a39 | Giorgos Verigakis | def isoformat(d): |
85 | 529178b1 | Giorgos Verigakis | """Return an ISO8601 date string that includes a timezone."""
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86 | aa197ee4 | Vangelis Koukis | |
87 | d8e50a39 | Giorgos Verigakis | return d.replace(tzinfo=UTC()).isoformat()
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88 | d8e50a39 | Giorgos Verigakis | |
89 | a08e4270 | Vangelis Koukis | |
90 | d8e50a39 | Giorgos Verigakis | def isoparse(s): |
91 | d8e50a39 | Giorgos Verigakis | """Parse an ISO8601 date string into a datetime object."""
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92 | aa197ee4 | Vangelis Koukis | |
93 | d8e50a39 | Giorgos Verigakis | if not s: |
94 | d8e50a39 | Giorgos Verigakis | return None |
95 | aa197ee4 | Vangelis Koukis | |
96 | d8e50a39 | Giorgos Verigakis | try:
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97 | d8e50a39 | Giorgos Verigakis | since = dateutil.parser.parse(s) |
98 | e87d30f3 | Giorgos Verigakis | utc_since = since.astimezone(UTC()).replace(tzinfo=None)
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99 | d8e50a39 | Giorgos Verigakis | except ValueError: |
100 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest('Invalid changes-since parameter.') |
101 | aa197ee4 | Vangelis Koukis | |
102 | e87d30f3 | Giorgos Verigakis | now = datetime.datetime.now() |
103 | e87d30f3 | Giorgos Verigakis | if utc_since > now:
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104 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest('changes-since value set in the future.') |
105 | aa197ee4 | Vangelis Koukis | |
106 | e87d30f3 | Giorgos Verigakis | if now - utc_since > timedelta(seconds=settings.POLL_LIMIT):
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107 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest('Too old changes-since value.') |
108 | aa197ee4 | Vangelis Koukis | |
109 | 0140e54b | Vangelis Koukis | return utc_since
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110 | aa197ee4 | Vangelis Koukis | |
111 | dca2a31f | Giorgos Verigakis | |
112 | dca2a31f | Giorgos Verigakis | def random_password(): |
113 | dca2a31f | Giorgos Verigakis | """Generates a random password
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114 | ce55f211 | Kostas Papadimitriou |
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115 | 62eac5a6 | Giorgos Verigakis | We generate a windows compliant password: it must contain at least
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116 | dca2a31f | Giorgos Verigakis | one charachter from each of the groups: upper case, lower case, digits.
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117 | dca2a31f | Giorgos Verigakis | """
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118 | ce55f211 | Kostas Papadimitriou | |
119 | dca2a31f | Giorgos Verigakis | pool = lowercase + uppercase + digits |
120 | dca2a31f | Giorgos Verigakis | lowerset = set(lowercase)
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121 | dca2a31f | Giorgos Verigakis | upperset = set(uppercase)
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122 | dca2a31f | Giorgos Verigakis | digitset = set(digits)
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123 | dca2a31f | Giorgos Verigakis | length = 10
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124 | ce55f211 | Kostas Papadimitriou | |
125 | 62eac5a6 | Giorgos Verigakis | password = ''.join(choice(pool) for i in range(length - 2)) |
126 | ce55f211 | Kostas Papadimitriou | |
127 | 62eac5a6 | Giorgos Verigakis | # Make sure the password is compliant
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128 | 62eac5a6 | Giorgos Verigakis | chars = set(password)
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129 | 62eac5a6 | Giorgos Verigakis | if not chars & lowerset: |
130 | 62eac5a6 | Giorgos Verigakis | password += choice(lowercase) |
131 | 62eac5a6 | Giorgos Verigakis | if not chars & upperset: |
132 | 62eac5a6 | Giorgos Verigakis | password += choice(uppercase) |
133 | 62eac5a6 | Giorgos Verigakis | if not chars & digitset: |
134 | 62eac5a6 | Giorgos Verigakis | password += choice(digits) |
135 | ce55f211 | Kostas Papadimitriou | |
136 | 62eac5a6 | Giorgos Verigakis | # Pad if necessary to reach required length
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137 | 62eac5a6 | Giorgos Verigakis | password += ''.join(choice(pool) for i in range(length - len(password))) |
138 | ce55f211 | Kostas Papadimitriou | |
139 | dca2a31f | Giorgos Verigakis | return password
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140 | dca2a31f | Giorgos Verigakis | |
141 | d8e50a39 | Giorgos Verigakis | |
142 | c738c935 | Giorgos Verigakis | def zeropad(s): |
143 | c738c935 | Giorgos Verigakis | """Add zeros at the end of a string in order to make its length
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144 | c738c935 | Giorgos Verigakis | a multiple of 16."""
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145 | d1387ed7 | Christodoulos Psaltis | |
146 | c738c935 | Giorgos Verigakis | npad = 16 - len(s) % 16 |
147 | c738c935 | Giorgos Verigakis | return s + '\x00' * npad |
148 | c738c935 | Giorgos Verigakis | |
149 | a08e4270 | Vangelis Koukis | |
150 | c738c935 | Giorgos Verigakis | def encrypt(plaintext): |
151 | c738c935 | Giorgos Verigakis | # Make sure key is 32 bytes long
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152 | c738c935 | Giorgos Verigakis | key = sha256(settings.SECRET_KEY).digest() |
153 | d1387ed7 | Christodoulos Psaltis | |
154 | c738c935 | Giorgos Verigakis | aes = AES.new(key) |
155 | c738c935 | Giorgos Verigakis | enc = aes.encrypt(zeropad(plaintext)) |
156 | c738c935 | Giorgos Verigakis | return b64encode(enc)
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157 | c738c935 | Giorgos Verigakis | |
158 | 7e2f9d4b | Giorgos Verigakis | |
159 | 7f2dbcad | Christos Stavrakakis | def get_vm(server_id, user_id, for_update=False, non_deleted=False, |
160 | 7f2dbcad | Christos Stavrakakis | non_suspended=False):
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161 | e221ade2 | Christos Stavrakakis | """Find a VirtualMachine instance based on ID and owner."""
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162 | aa197ee4 | Vangelis Koukis | |
163 | d8e50a39 | Giorgos Verigakis | try:
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164 | d8e50a39 | Giorgos Verigakis | server_id = int(server_id)
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165 | 7f2dbcad | Christos Stavrakakis | servers = VirtualMachine.objects |
166 | 7f2dbcad | Christos Stavrakakis | if for_update:
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167 | 7f2dbcad | Christos Stavrakakis | servers = servers.select_for_update() |
168 | 7f2dbcad | Christos Stavrakakis | vm = servers.get(id=server_id, userid=user_id) |
169 | e221ade2 | Christos Stavrakakis | if non_deleted and vm.deleted: |
170 | e221ade2 | Christos Stavrakakis | raise VirtualMachine.DeletedError
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171 | e221ade2 | Christos Stavrakakis | if non_suspended and vm.suspended: |
172 | bd40abfa | Christos Stavrakakis | raise faults.Forbidden("Administratively Suspended VM") |
173 | 3a522cff | Christos Stavrakakis | return vm
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174 | d8e50a39 | Giorgos Verigakis | except ValueError: |
175 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest('Invalid server ID.') |
176 | d8e50a39 | Giorgos Verigakis | except VirtualMachine.DoesNotExist:
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177 | bd40abfa | Christos Stavrakakis | raise faults.ItemNotFound('Server not found.') |
178 | d8e50a39 | Giorgos Verigakis | |
179 | 7f2dbcad | Christos Stavrakakis | |
180 | 40777cc8 | Giorgos Verigakis | def get_vm_meta(vm, key): |
181 | d8e50a39 | Giorgos Verigakis | """Return a VirtualMachineMetadata instance or raise ItemNotFound."""
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182 | aa197ee4 | Vangelis Koukis | |
183 | d8e50a39 | Giorgos Verigakis | try:
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184 | 40777cc8 | Giorgos Verigakis | return VirtualMachineMetadata.objects.get(meta_key=key, vm=vm)
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185 | d8e50a39 | Giorgos Verigakis | except VirtualMachineMetadata.DoesNotExist:
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186 | bd40abfa | Christos Stavrakakis | raise faults.ItemNotFound('Metadata key not found.') |
187 | d8e50a39 | Giorgos Verigakis | |
188 | a08e4270 | Vangelis Koukis | |
189 | 6ef51e9f | Giorgos Verigakis | def get_image(image_id, user_id): |
190 | d8e50a39 | Giorgos Verigakis | """Return an Image instance or raise ItemNotFound."""
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191 | aa197ee4 | Vangelis Koukis | |
192 | 6ef51e9f | Giorgos Verigakis | backend = ImageBackend(user_id) |
193 | d8e50a39 | Giorgos Verigakis | try:
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194 | 6ef51e9f | Giorgos Verigakis | image = backend.get_image(image_id) |
195 | 3a9b3cde | Giorgos Verigakis | if not image: |
196 | bd40abfa | Christos Stavrakakis | raise faults.ItemNotFound('Image not found.') |
197 | 3a9b3cde | Giorgos Verigakis | return image
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198 | 3a9b3cde | Giorgos Verigakis | finally:
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199 | 3a9b3cde | Giorgos Verigakis | backend.close() |
200 | 3a9b3cde | Giorgos Verigakis | |
201 | a08e4270 | Vangelis Koukis | |
202 | dca7553e | Christos Stavrakakis | def get_image_dict(image_id, user_id): |
203 | dca7553e | Christos Stavrakakis | image = {} |
204 | dca7553e | Christos Stavrakakis | img = get_image(image_id, user_id) |
205 | dca7553e | Christos Stavrakakis | properties = img.get('properties', {})
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206 | dca7553e | Christos Stavrakakis | image['backend_id'] = img['location'] |
207 | dca7553e | Christos Stavrakakis | image['format'] = img['disk_format'] |
208 | e440e835 | Christos Stavrakakis | image['metadata'] = dict((key.upper(), val) |
209 | dca7553e | Christos Stavrakakis | for key, val in properties.items()) |
210 | 2cb812be | Christos Stavrakakis | image['checksum'] = img['checksum'] |
211 | 2cb812be | Christos Stavrakakis | |
212 | dca7553e | Christos Stavrakakis | return image
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213 | dca7553e | Christos Stavrakakis | |
214 | dca7553e | Christos Stavrakakis | |
215 | aa8230bd | Christos Stavrakakis | def get_flavor(flavor_id, include_deleted=False): |
216 | 529178b1 | Giorgos Verigakis | """Return a Flavor instance or raise ItemNotFound."""
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217 | aa197ee4 | Vangelis Koukis | |
218 | 529178b1 | Giorgos Verigakis | try:
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219 | 529178b1 | Giorgos Verigakis | flavor_id = int(flavor_id)
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220 | aa8230bd | Christos Stavrakakis | if include_deleted:
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221 | aa8230bd | Christos Stavrakakis | return Flavor.objects.get(id=flavor_id)
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222 | aa8230bd | Christos Stavrakakis | else:
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223 | aa8230bd | Christos Stavrakakis | return Flavor.objects.get(id=flavor_id, deleted=include_deleted)
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224 | 6ef51e9f | Giorgos Verigakis | except (ValueError, Flavor.DoesNotExist): |
225 | bd40abfa | Christos Stavrakakis | raise faults.ItemNotFound('Flavor not found.') |
226 | d8e50a39 | Giorgos Verigakis | |
227 | a08e4270 | Vangelis Koukis | |
228 | d2e73c0c | Christos Stavrakakis | def get_network(network_id, user_id, for_update=False): |
229 | e2ee7808 | Giorgos Verigakis | """Return a Network instance or raise ItemNotFound."""
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230 | aa197ee4 | Vangelis Koukis | |
231 | e2ee7808 | Giorgos Verigakis | try:
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232 | 7fede91e | Christos Stavrakakis | network_id = int(network_id)
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233 | d3406fbc | Christos Stavrakakis | objects = Network.objects |
234 | d2e73c0c | Christos Stavrakakis | if for_update:
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235 | d3406fbc | Christos Stavrakakis | objects = objects.select_for_update() |
236 | d3406fbc | Christos Stavrakakis | return objects.get(Q(userid=user_id) | Q(public=True), id=network_id) |
237 | 6ef51e9f | Giorgos Verigakis | except (ValueError, Network.DoesNotExist): |
238 | bd40abfa | Christos Stavrakakis | raise faults.ItemNotFound('Network not found.') |
239 | e2ee7808 | Giorgos Verigakis | |
240 | a08e4270 | Vangelis Koukis | |
241 | 9ae613af | Christos Stavrakakis | def validate_network_params(subnet, gateway=None, subnet6=None, gateway6=None): |
242 | d368ec0c | Christos Stavrakakis | try:
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243 | d368ec0c | Christos Stavrakakis | # Use strict option to not all subnets with host bits set
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244 | 9ae613af | Christos Stavrakakis | network = ipaddr.IPv4Network(subnet, strict=True)
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245 | d368ec0c | Christos Stavrakakis | except ValueError: |
246 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Invalid network IPv4 subnet") |
247 | d368ec0c | Christos Stavrakakis | |
248 | d368ec0c | Christos Stavrakakis | # Check that network size is allowed!
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249 | d368ec0c | Christos Stavrakakis | if not validate_network_size(network.prefixlen): |
250 | bd40abfa | Christos Stavrakakis | raise faults.OverLimit(message="Unsupported network size", |
251 | 9ae613af | Christos Stavrakakis | details="Network mask must be in range (%s, 29]" %
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252 | 9ae613af | Christos Stavrakakis | MAX_CIDR_BLOCK) |
253 | 9ae613af | Christos Stavrakakis | |
254 | 9ae613af | Christos Stavrakakis | # Check that gateway belongs to network
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255 | 9ae613af | Christos Stavrakakis | if gateway:
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256 | 9ae613af | Christos Stavrakakis | try:
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257 | 9ae613af | Christos Stavrakakis | gateway = ipaddr.IPv4Address(gateway) |
258 | 9ae613af | Christos Stavrakakis | except ValueError: |
259 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Invalid network IPv4 gateway") |
260 | 9ae613af | Christos Stavrakakis | if not gateway in network: |
261 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Invalid network IPv4 gateway") |
262 | 9ae613af | Christos Stavrakakis | |
263 | 9ae613af | Christos Stavrakakis | if subnet6:
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264 | 9ae613af | Christos Stavrakakis | try:
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265 | 9ae613af | Christos Stavrakakis | # Use strict option to not all subnets with host bits set
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266 | 9ae613af | Christos Stavrakakis | network6 = ipaddr.IPv6Network(subnet6, strict=True)
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267 | 9ae613af | Christos Stavrakakis | except ValueError: |
268 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Invalid network IPv6 subnet") |
269 | 9ae613af | Christos Stavrakakis | if gateway6:
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270 | 9ae613af | Christos Stavrakakis | try:
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271 | 9ae613af | Christos Stavrakakis | gateway6 = ipaddr.IPv6Address(gateway6) |
272 | 9ae613af | Christos Stavrakakis | except ValueError: |
273 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Invalid network IPv6 gateway") |
274 | 9ae613af | Christos Stavrakakis | if not gateway6 in network6: |
275 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Invalid network IPv6 gateway") |
276 | d368ec0c | Christos Stavrakakis | |
277 | d368ec0c | Christos Stavrakakis | |
278 | b14725eb | Christos Stavrakakis | def validate_network_size(cidr_block): |
279 | b14725eb | Christos Stavrakakis | """Return True if network size is allowed."""
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280 | b14725eb | Christos Stavrakakis | return cidr_block <= 29 and cidr_block > MAX_CIDR_BLOCK |
281 | b14725eb | Christos Stavrakakis | |
282 | b14725eb | Christos Stavrakakis | |
283 | adc46059 | Christos Stavrakakis | def allocate_public_address(backend): |
284 | adc46059 | Christos Stavrakakis | """Allocate a public IP for a vm."""
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285 | adc46059 | Christos Stavrakakis | for network in backend_public_networks(backend): |
286 | adc46059 | Christos Stavrakakis | try:
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287 | adc46059 | Christos Stavrakakis | address = get_network_free_address(network) |
288 | adc46059 | Christos Stavrakakis | return (network, address)
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289 | adc46059 | Christos Stavrakakis | except EmptyPool:
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290 | adc46059 | Christos Stavrakakis | pass
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291 | adc46059 | Christos Stavrakakis | return (None, None) |
292 | adc46059 | Christos Stavrakakis | |
293 | adc46059 | Christos Stavrakakis | |
294 | dca7553e | Christos Stavrakakis | def get_public_ip(backend): |
295 | dca7553e | Christos Stavrakakis | """Reserve an IP from a public network.
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296 | dca7553e | Christos Stavrakakis |
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297 | dca7553e | Christos Stavrakakis | This method should run inside a transaction.
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298 | dca7553e | Christos Stavrakakis |
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299 | dca7553e | Christos Stavrakakis | """
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300 | dca7553e | Christos Stavrakakis | address = None
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301 | 74459c12 | Christos Stavrakakis | if settings.PUBLIC_USE_POOL:
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302 | dca7553e | Christos Stavrakakis | (network, address) = allocate_public_address(backend) |
303 | dca7553e | Christos Stavrakakis | else:
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304 | dca7553e | Christos Stavrakakis | for net in list(backend_public_networks(backend)): |
305 | dca7553e | Christos Stavrakakis | pool = net.get_pool() |
306 | dca7553e | Christos Stavrakakis | if not pool.empty(): |
307 | dca7553e | Christos Stavrakakis | address = 'pool'
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308 | dca7553e | Christos Stavrakakis | network = net |
309 | dca7553e | Christos Stavrakakis | break
|
310 | dca7553e | Christos Stavrakakis | if address is None: |
311 | dca7553e | Christos Stavrakakis | log.error("Public networks of backend %s are full", backend)
|
312 | bd40abfa | Christos Stavrakakis | raise faults.OverLimit("Can not allocate IP for new machine." |
313 | dca7553e | Christos Stavrakakis | " Public networks are full.")
|
314 | dca7553e | Christos Stavrakakis | return (network, address)
|
315 | dca7553e | Christos Stavrakakis | |
316 | dca7553e | Christos Stavrakakis | |
317 | 7fede91e | Christos Stavrakakis | def backend_public_networks(backend): |
318 | 7fede91e | Christos Stavrakakis | """Return available public networks of the backend.
|
319 | 7fede91e | Christos Stavrakakis |
|
320 | 7fede91e | Christos Stavrakakis | Iterator for non-deleted public networks that are available
|
321 | 7fede91e | Christos Stavrakakis | to the specified backend.
|
322 | 7fede91e | Christos Stavrakakis |
|
323 | 7fede91e | Christos Stavrakakis | """
|
324 | 7fede91e | Christos Stavrakakis | for network in Network.objects.filter(public=True, deleted=False): |
325 | 7fede91e | Christos Stavrakakis | if BackendNetwork.objects.filter(network=network,
|
326 | 7fede91e | Christos Stavrakakis | backend=backend).exists(): |
327 | 7fede91e | Christos Stavrakakis | yield network
|
328 | 7fede91e | Christos Stavrakakis | |
329 | 7fede91e | Christos Stavrakakis | |
330 | 7fede91e | Christos Stavrakakis | def get_network_free_address(network): |
331 | 7fede91e | Christos Stavrakakis | """Reserve an IP address from the IP Pool of the network.
|
332 | 7fede91e | Christos Stavrakakis |
|
333 | fdc94944 | Christos Stavrakakis | Raises EmptyPool
|
334 | 7fede91e | Christos Stavrakakis |
|
335 | 7fede91e | Christos Stavrakakis | """
|
336 | 7fede91e | Christos Stavrakakis | |
337 | fdc94944 | Christos Stavrakakis | pool = network.get_pool() |
338 | fdc94944 | Christos Stavrakakis | address = pool.get() |
339 | 7fede91e | Christos Stavrakakis | pool.save() |
340 | 7fede91e | Christos Stavrakakis | return address
|
341 | 7fede91e | Christos Stavrakakis | |
342 | 7fede91e | Christos Stavrakakis | |
343 | d44c236b | Giorgos Verigakis | def get_nic(machine, network): |
344 | d44c236b | Giorgos Verigakis | try:
|
345 | d44c236b | Giorgos Verigakis | return NetworkInterface.objects.get(machine=machine, network=network)
|
346 | d44c236b | Giorgos Verigakis | except NetworkInterface.DoesNotExist:
|
347 | bd40abfa | Christos Stavrakakis | raise faults.ItemNotFound('Server not connected to this network.') |
348 | d44c236b | Giorgos Verigakis | |
349 | 7fede91e | Christos Stavrakakis | |
350 | 08b079e2 | Stavros Sachtouris | def get_nic_from_index(vm, nic_index): |
351 | 08b079e2 | Stavros Sachtouris | """Returns the nic_index-th nic of a vm
|
352 | 08b079e2 | Stavros Sachtouris | Error Response Codes: itemNotFound (404), badMediaType (415)
|
353 | 08b079e2 | Stavros Sachtouris | """
|
354 | 08b079e2 | Stavros Sachtouris | matching_nics = vm.nics.filter(index=nic_index) |
355 | 08b079e2 | Stavros Sachtouris | matching_nics_len = len(matching_nics)
|
356 | 08b079e2 | Stavros Sachtouris | if matching_nics_len < 1: |
357 | bd40abfa | Christos Stavrakakis | raise faults.ItemNotFound('NIC not found on VM') |
358 | 08b079e2 | Stavros Sachtouris | elif matching_nics_len > 1: |
359 | bd40abfa | Christos Stavrakakis | raise faults.BadMediaType('NIC index conflict on VM') |
360 | 08b079e2 | Stavros Sachtouris | nic = matching_nics[0]
|
361 | 08b079e2 | Stavros Sachtouris | return nic
|
362 | e2ee7808 | Giorgos Verigakis | |
363 | 7fede91e | Christos Stavrakakis | |
364 | 7e2f9d4b | Giorgos Verigakis | def get_request_dict(request): |
365 | d8e50a39 | Giorgos Verigakis | """Returns data sent by the client as a python dict."""
|
366 | aa197ee4 | Vangelis Koukis | |
367 | 7e2f9d4b | Giorgos Verigakis | data = request.raw_post_data |
368 | 7e45ddef | Dimitris Moraitis | if request.META.get('CONTENT_TYPE').startswith('application/json'): |
369 | 7e2f9d4b | Giorgos Verigakis | try:
|
370 | 7e2f9d4b | Giorgos Verigakis | return json.loads(data)
|
371 | 7e2f9d4b | Giorgos Verigakis | except ValueError: |
372 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest('Invalid JSON data.') |
373 | d8e50a39 | Giorgos Verigakis | else:
|
374 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest('Unsupported Content-Type.') |
375 | 7e2f9d4b | Giorgos Verigakis | |
376 | a08e4270 | Vangelis Koukis | |
377 | 8b01f7f3 | Giorgos Verigakis | def update_response_headers(request, response): |
378 | 8b01f7f3 | Giorgos Verigakis | if request.serialization == 'xml': |
379 | 8b01f7f3 | Giorgos Verigakis | response['Content-Type'] = 'application/xml' |
380 | 8b01f7f3 | Giorgos Verigakis | elif request.serialization == 'atom': |
381 | 8b01f7f3 | Giorgos Verigakis | response['Content-Type'] = 'application/atom+xml' |
382 | 8b01f7f3 | Giorgos Verigakis | else:
|
383 | 8b01f7f3 | Giorgos Verigakis | response['Content-Type'] = 'application/json' |
384 | aa197ee4 | Vangelis Koukis | |
385 | 4cf8adf8 | Vangelis Koukis | if settings.TEST:
|
386 | cdb65551 | Giorgos Verigakis | response['Date'] = format_date_time(time())
|
387 | ce55f211 | Kostas Papadimitriou | |
388 | b75555e5 | Giorgos Verigakis | add_never_cache_headers(response) |
389 | b75555e5 | Giorgos Verigakis | |
390 | 8b01f7f3 | Giorgos Verigakis | |
391 | 432fc8c3 | Giorgos Verigakis | def render_metadata(request, metadata, use_values=False, status=200): |
392 | 432fc8c3 | Giorgos Verigakis | if request.serialization == 'xml': |
393 | 432fc8c3 | Giorgos Verigakis | data = render_to_string('metadata.xml', {'metadata': metadata}) |
394 | 432fc8c3 | Giorgos Verigakis | else:
|
395 | b36f78fa | Giorgos Verigakis | if use_values:
|
396 | b36f78fa | Giorgos Verigakis | d = {'metadata': {'values': metadata}} |
397 | b36f78fa | Giorgos Verigakis | else:
|
398 | b36f78fa | Giorgos Verigakis | d = {'metadata': metadata}
|
399 | 432fc8c3 | Giorgos Verigakis | data = json.dumps(d) |
400 | 432fc8c3 | Giorgos Verigakis | return HttpResponse(data, status=status)
|
401 | 432fc8c3 | Giorgos Verigakis | |
402 | a08e4270 | Vangelis Koukis | |
403 | 432fc8c3 | Giorgos Verigakis | def render_meta(request, meta, status=200): |
404 | 432fc8c3 | Giorgos Verigakis | if request.serialization == 'xml': |
405 | 6ef51e9f | Giorgos Verigakis | data = render_to_string('meta.xml', dict(key=key, val=val)) |
406 | 432fc8c3 | Giorgos Verigakis | else:
|
407 | 6ef51e9f | Giorgos Verigakis | data = json.dumps(dict(meta=meta))
|
408 | 432fc8c3 | Giorgos Verigakis | return HttpResponse(data, status=status)
|
409 | 432fc8c3 | Giorgos Verigakis | |
410 | a08e4270 | Vangelis Koukis | |
411 | c36934a7 | Giorgos Verigakis | def render_fault(request, fault): |
412 | 4cf8adf8 | Vangelis Koukis | if settings.DEBUG or settings.TEST: |
413 | 7e2f9d4b | Giorgos Verigakis | fault.details = format_exc(fault) |
414 | aa197ee4 | Vangelis Koukis | |
415 | d8e50a39 | Giorgos Verigakis | if request.serialization == 'xml': |
416 | d8e50a39 | Giorgos Verigakis | data = render_to_string('fault.xml', {'fault': fault}) |
417 | 7e2f9d4b | Giorgos Verigakis | else:
|
418 | e440e835 | Christos Stavrakakis | d = {fault.name: {'code': fault.code,
|
419 | e440e835 | Christos Stavrakakis | 'message': fault.message,
|
420 | e440e835 | Christos Stavrakakis | 'details': fault.details}}
|
421 | 7e2f9d4b | Giorgos Verigakis | data = json.dumps(d) |
422 | aa197ee4 | Vangelis Koukis | |
423 | f0656db1 | Giorgos Verigakis | resp = HttpResponse(data, status=fault.code) |
424 | 8b01f7f3 | Giorgos Verigakis | update_response_headers(request, resp) |
425 | f0656db1 | Giorgos Verigakis | return resp
|
426 | d8e50a39 | Giorgos Verigakis | |
427 | 432fc8c3 | Giorgos Verigakis | |
428 | d8e50a39 | Giorgos Verigakis | def request_serialization(request, atom_allowed=False): |
429 | d8e50a39 | Giorgos Verigakis | """Return the serialization format requested.
|
430 | aa197ee4 | Vangelis Koukis |
|
431 | 529178b1 | Giorgos Verigakis | Valid formats are 'json', 'xml' and 'atom' if `atom_allowed` is True.
|
432 | d8e50a39 | Giorgos Verigakis | """
|
433 | aa197ee4 | Vangelis Koukis | |
434 | d8e50a39 | Giorgos Verigakis | path = request.path |
435 | aa197ee4 | Vangelis Koukis | |
436 | d8e50a39 | Giorgos Verigakis | if path.endswith('.json'): |
437 | d8e50a39 | Giorgos Verigakis | return 'json' |
438 | d8e50a39 | Giorgos Verigakis | elif path.endswith('.xml'): |
439 | d8e50a39 | Giorgos Verigakis | return 'xml' |
440 | d8e50a39 | Giorgos Verigakis | elif atom_allowed and path.endswith('.atom'): |
441 | d8e50a39 | Giorgos Verigakis | return 'atom' |
442 | aa197ee4 | Vangelis Koukis | |
443 | d8e50a39 | Giorgos Verigakis | for item in request.META.get('HTTP_ACCEPT', '').split(','): |
444 | d8e50a39 | Giorgos Verigakis | accept, sep, rest = item.strip().partition(';')
|
445 | d8e50a39 | Giorgos Verigakis | if accept == 'application/json': |
446 | d8e50a39 | Giorgos Verigakis | return 'json' |
447 | d8e50a39 | Giorgos Verigakis | elif accept == 'application/xml': |
448 | d8e50a39 | Giorgos Verigakis | return 'xml' |
449 | d8e50a39 | Giorgos Verigakis | elif atom_allowed and accept == 'application/atom+xml': |
450 | d8e50a39 | Giorgos Verigakis | return 'atom' |
451 | aa197ee4 | Vangelis Koukis | |
452 | d8e50a39 | Giorgos Verigakis | return 'json' |
453 | 7e2f9d4b | Giorgos Verigakis | |
454 | a08e4270 | Vangelis Koukis | |
455 | d8e50a39 | Giorgos Verigakis | def api_method(http_method=None, atom_allowed=False): |
456 | d8e50a39 | Giorgos Verigakis | """Decorator function for views that implement an API method."""
|
457 | aa197ee4 | Vangelis Koukis | |
458 | c36934a7 | Giorgos Verigakis | def decorator(func): |
459 | c36934a7 | Giorgos Verigakis | @wraps(func)
|
460 | c36934a7 | Giorgos Verigakis | def wrapper(request, *args, **kwargs): |
461 | c36934a7 | Giorgos Verigakis | try:
|
462 | 6ef51e9f | Giorgos Verigakis | request.serialization = request_serialization(request, |
463 | 6ef51e9f | Giorgos Verigakis | atom_allowed) |
464 | 4b3b8688 | Giorgos Verigakis | get_user(request, settings.ASTAKOS_URL) |
465 | 4b3b8688 | Giorgos Verigakis | if not request.user_uniq: |
466 | bd40abfa | Christos Stavrakakis | raise faults.Unauthorized('No user found.') |
467 | d8e50a39 | Giorgos Verigakis | if http_method and request.method != http_method: |
468 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest('Method not allowed.') |
469 | 7fede91e | Christos Stavrakakis | |
470 | c36934a7 | Giorgos Verigakis | resp = func(request, *args, **kwargs) |
471 | 8b01f7f3 | Giorgos Verigakis | update_response_headers(request, resp) |
472 | c36934a7 | Giorgos Verigakis | return resp
|
473 | bd40abfa | Christos Stavrakakis | except faults.Fault, fault:
|
474 | 260147b1 | Christos Stavrakakis | if fault.code >= 500: |
475 | 260147b1 | Christos Stavrakakis | log.exception('API fault')
|
476 | c36934a7 | Giorgos Verigakis | return render_fault(request, fault)
|
477 | 7fede91e | Christos Stavrakakis | except BaseException: |
478 | 9e98ba3c | Giorgos Verigakis | log.exception('Unexpected error')
|
479 | bd40abfa | Christos Stavrakakis | fault = faults.ServiceUnavailable('Unexpected error.')
|
480 | c36934a7 | Giorgos Verigakis | return render_fault(request, fault)
|
481 | c36934a7 | Giorgos Verigakis | return wrapper
|
482 | c36934a7 | Giorgos Verigakis | return decorator
|
483 | 08b079e2 | Stavros Sachtouris | |
484 | 3165f027 | Christos Stavrakakis | |
485 | 08b079e2 | Stavros Sachtouris | def construct_nic_id(nic): |
486 | 08b079e2 | Stavros Sachtouris | return "-".join(["nic", unicode(nic.machine.id), unicode(nic.index)]) |
487 | 6dd70a5c | Christos Stavrakakis | |
488 | 6dd70a5c | Christos Stavrakakis | |
489 | dca7553e | Christos Stavrakakis | def verify_personality(personality): |
490 | 6ec4694f | Christos Stavrakakis | """Verify that a a list of personalities is well formed"""
|
491 | 006c6249 | Christos Stavrakakis | if len(personality) > settings.MAX_PERSONALITY: |
492 | bd40abfa | Christos Stavrakakis | raise faults.OverLimit("Maximum number of personalities" |
493 | e440e835 | Christos Stavrakakis | " exceeded")
|
494 | dca7553e | Christos Stavrakakis | for p in personality: |
495 | dca7553e | Christos Stavrakakis | # Verify that personalities are well-formed
|
496 | dca7553e | Christos Stavrakakis | try:
|
497 | dca7553e | Christos Stavrakakis | assert isinstance(p, dict) |
498 | dca7553e | Christos Stavrakakis | keys = set(p.keys())
|
499 | dca7553e | Christos Stavrakakis | allowed = set(['contents', 'group', 'mode', 'owner', 'path']) |
500 | dca7553e | Christos Stavrakakis | assert keys.issubset(allowed)
|
501 | dca7553e | Christos Stavrakakis | contents = p['contents']
|
502 | dca7553e | Christos Stavrakakis | if len(contents) > settings.MAX_PERSONALITY_SIZE: |
503 | dca7553e | Christos Stavrakakis | # No need to decode if contents already exceed limit
|
504 | bd40abfa | Christos Stavrakakis | raise faults.OverLimit("Maximum size of personality exceeded") |
505 | dca7553e | Christos Stavrakakis | if len(b64decode(contents)) > settings.MAX_PERSONALITY_SIZE: |
506 | bd40abfa | Christos Stavrakakis | raise faults.OverLimit("Maximum size of personality exceeded") |
507 | dca7553e | Christos Stavrakakis | except AssertionError: |
508 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Malformed personality in request") |
509 | 2a599282 | Christos Stavrakakis | |
510 | 2a599282 | Christos Stavrakakis | |
511 | 2a599282 | Christos Stavrakakis | def get_flavor_provider(flavor): |
512 | 2a599282 | Christos Stavrakakis | """Extract provider from disk template.
|
513 | 2a599282 | Christos Stavrakakis |
|
514 | 2a599282 | Christos Stavrakakis | Provider for `ext` disk_template is encoded in the disk template
|
515 | 2a599282 | Christos Stavrakakis | name, which is formed `ext_<provider_name>`. Provider is None
|
516 | 2a599282 | Christos Stavrakakis | for all other disk templates.
|
517 | 2a599282 | Christos Stavrakakis |
|
518 | 2a599282 | Christos Stavrakakis | """
|
519 | 2a599282 | Christos Stavrakakis | disk_template = flavor.disk_template |
520 | 2a599282 | Christos Stavrakakis | provider = None
|
521 | 2a599282 | Christos Stavrakakis | if disk_template.startswith("ext"): |
522 | 2a599282 | Christos Stavrakakis | disk_template, provider = disk_template.split("_", 1) |
523 | 2a599282 | Christos Stavrakakis | return disk_template, provider
|
524 | b7d38981 | Dimitris Aragiorgis | |
525 | e440e835 | Christos Stavrakakis | |
526 | b7d38981 | Dimitris Aragiorgis | def values_from_flavor(flavor): |
527 | b7d38981 | Dimitris Aragiorgis | """Get Ganeti connectivity info from flavor type.
|
528 | b7d38981 | Dimitris Aragiorgis |
|
529 | b7d38981 | Dimitris Aragiorgis | If link or mac_prefix equals to "pool", then the resources
|
530 | b7d38981 | Dimitris Aragiorgis | are allocated from the corresponding Pools.
|
531 | b7d38981 | Dimitris Aragiorgis |
|
532 | b7d38981 | Dimitris Aragiorgis | """
|
533 | b7d38981 | Dimitris Aragiorgis | try:
|
534 | b7d38981 | Dimitris Aragiorgis | flavor = Network.FLAVORS[flavor] |
535 | b7d38981 | Dimitris Aragiorgis | except KeyError: |
536 | bd40abfa | Christos Stavrakakis | raise faults.BadRequest("Unknown network flavor") |
537 | b7d38981 | Dimitris Aragiorgis | |
538 | b7d38981 | Dimitris Aragiorgis | mode = flavor.get("mode")
|
539 | b7d38981 | Dimitris Aragiorgis | |
540 | b7d38981 | Dimitris Aragiorgis | link = flavor.get("link")
|
541 | b7d38981 | Dimitris Aragiorgis | if link == "pool": |
542 | b7d38981 | Dimitris Aragiorgis | link = allocate_resource("bridge")
|
543 | b7d38981 | Dimitris Aragiorgis | |
544 | b7d38981 | Dimitris Aragiorgis | mac_prefix = flavor.get("mac_prefix")
|
545 | b7d38981 | Dimitris Aragiorgis | if mac_prefix == "pool": |
546 | b7d38981 | Dimitris Aragiorgis | mac_prefix = allocate_resource("mac_prefix")
|
547 | b7d38981 | Dimitris Aragiorgis | |
548 | b7d38981 | Dimitris Aragiorgis | tags = flavor.get("tags")
|
549 | b7d38981 | Dimitris Aragiorgis | |
550 | b7d38981 | Dimitris Aragiorgis | return mode, link, mac_prefix, tags
|
551 | b7d38981 | Dimitris Aragiorgis | |
552 | b7d38981 | Dimitris Aragiorgis | |
553 | b7d38981 | Dimitris Aragiorgis | def allocate_resource(res_type): |
554 | b7d38981 | Dimitris Aragiorgis | table = get_pool_table(res_type) |
555 | b7d38981 | Dimitris Aragiorgis | pool = table.get_pool() |
556 | b7d38981 | Dimitris Aragiorgis | value = pool.get() |
557 | b7d38981 | Dimitris Aragiorgis | pool.save() |
558 | b7d38981 | Dimitris Aragiorgis | return value
|
559 | b7d38981 | Dimitris Aragiorgis | |
560 | b7d38981 | Dimitris Aragiorgis | |
561 | b7d38981 | Dimitris Aragiorgis | def release_resource(res_type, value): |
562 | b7d38981 | Dimitris Aragiorgis | table = get_pool_table(res_type) |
563 | b7d38981 | Dimitris Aragiorgis | pool = table.get_pool() |
564 | b7d38981 | Dimitris Aragiorgis | pool.put(value) |
565 | b7d38981 | Dimitris Aragiorgis | pool.save() |
566 | b7d38981 | Dimitris Aragiorgis | |
567 | b7d38981 | Dimitris Aragiorgis | |
568 | b7d38981 | Dimitris Aragiorgis | def get_pool_table(res_type): |
569 | b7d38981 | Dimitris Aragiorgis | if res_type == "bridge": |
570 | b7d38981 | Dimitris Aragiorgis | return BridgePoolTable
|
571 | b7d38981 | Dimitris Aragiorgis | elif res_type == "mac_prefix": |
572 | b7d38981 | Dimitris Aragiorgis | return MacPrefixPoolTable
|
573 | b7d38981 | Dimitris Aragiorgis | else:
|
574 | b7d38981 | Dimitris Aragiorgis | raise Exception("Unknown resource type") |
575 | 55f562a4 | Kostas Papadimitriou | |
576 | 55f562a4 | Kostas Papadimitriou | |
577 | 55f562a4 | Kostas Papadimitriou | def get_existing_users(): |
578 | 55f562a4 | Kostas Papadimitriou | """
|
579 | 55f562a4 | Kostas Papadimitriou | Retrieve user ids stored in cyclades user agnostic models.
|
580 | 55f562a4 | Kostas Papadimitriou | """
|
581 | 55f562a4 | Kostas Papadimitriou | # also check PublicKeys a user with no servers/networks exist
|
582 | 55f562a4 | Kostas Papadimitriou | from synnefo.ui.userdata.models import PublicKeyPair |
583 | 55f562a4 | Kostas Papadimitriou | from synnefo.db.models import VirtualMachine, Network |
584 | 55f562a4 | Kostas Papadimitriou | |
585 | 55f562a4 | Kostas Papadimitriou | keypairusernames = PublicKeyPair.objects.filter().values_list('user',
|
586 | e440e835 | Christos Stavrakakis | flat=True)
|
587 | 55f562a4 | Kostas Papadimitriou | serverusernames = VirtualMachine.objects.filter().values_list('userid',
|
588 | e440e835 | Christos Stavrakakis | flat=True)
|
589 | 55f562a4 | Kostas Papadimitriou | networkusernames = Network.objects.filter().values_list('userid',
|
590 | 55f562a4 | Kostas Papadimitriou | flat=True)
|
591 | 55f562a4 | Kostas Papadimitriou | |
592 | e440e835 | Christos Stavrakakis | return set(list(keypairusernames) + list(serverusernames) + |
593 | e440e835 | Christos Stavrakakis | list(networkusernames)) |