root / snf-cyclades-app / synnefo / api / util.py @ adc46059
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1 | 6ef51e9f | Giorgos Verigakis | # Copyright 2011-2012 GRNET S.A. All rights reserved.
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2 | d1387ed7 | Christodoulos Psaltis | #
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3 | adee02b8 | Giorgos Verigakis | # Redistribution and use in source and binary forms, with or
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4 | adee02b8 | Giorgos Verigakis | # without modification, are permitted provided that the following
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5 | adee02b8 | Giorgos Verigakis | # conditions are met:
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6 | d1387ed7 | Christodoulos Psaltis | #
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7 | adee02b8 | Giorgos Verigakis | # 1. Redistributions of source code must retain the above
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8 | adee02b8 | Giorgos Verigakis | # copyright notice, this list of conditions and the following
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9 | adee02b8 | Giorgos Verigakis | # disclaimer.
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10 | d1387ed7 | Christodoulos Psaltis | #
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11 | adee02b8 | Giorgos Verigakis | # 2. Redistributions in binary form must reproduce the above
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12 | adee02b8 | Giorgos Verigakis | # copyright notice, this list of conditions and the following
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13 | adee02b8 | Giorgos Verigakis | # disclaimer in the documentation and/or other materials
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14 | adee02b8 | Giorgos Verigakis | # provided with the distribution.
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15 | d1387ed7 | Christodoulos Psaltis | #
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16 | adee02b8 | Giorgos Verigakis | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | adee02b8 | Giorgos Verigakis | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | adee02b8 | Giorgos Verigakis | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | adee02b8 | Giorgos Verigakis | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | adee02b8 | Giorgos Verigakis | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | adee02b8 | Giorgos Verigakis | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | adee02b8 | Giorgos Verigakis | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | adee02b8 | Giorgos Verigakis | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | adee02b8 | Giorgos Verigakis | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | adee02b8 | Giorgos Verigakis | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | adee02b8 | Giorgos Verigakis | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | adee02b8 | Giorgos Verigakis | # POSSIBILITY OF SUCH DAMAGE.
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28 | d1387ed7 | Christodoulos Psaltis | #
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29 | adee02b8 | Giorgos Verigakis | # The views and conclusions contained in the software and
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30 | adee02b8 | Giorgos Verigakis | # documentation are those of the authors and should not be
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31 | adee02b8 | Giorgos Verigakis | # interpreted as representing official policies, either expressed
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32 | adee02b8 | Giorgos Verigakis | # or implied, of GRNET S.A.
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33 | 7e2f9d4b | Giorgos Verigakis | |
34 | c738c935 | Giorgos Verigakis | import datetime |
35 | c738c935 | Giorgos Verigakis | |
36 | c738c935 | Giorgos Verigakis | from base64 import b64encode |
37 | d8e50a39 | Giorgos Verigakis | from datetime import timedelta, tzinfo |
38 | d8e50a39 | Giorgos Verigakis | from functools import wraps |
39 | c738c935 | Giorgos Verigakis | from hashlib import sha256 |
40 | 2035039b | Giorgos Verigakis | from logging import getLogger |
41 | d8e50a39 | Giorgos Verigakis | from random import choice |
42 | dca2a31f | Giorgos Verigakis | from string import digits, lowercase, uppercase |
43 | 8b01f7f3 | Giorgos Verigakis | from time import time |
44 | d8e50a39 | Giorgos Verigakis | from traceback import format_exc |
45 | 8b01f7f3 | Giorgos Verigakis | from wsgiref.handlers import format_date_time |
46 | 7e2f9d4b | Giorgos Verigakis | |
47 | 2035039b | Giorgos Verigakis | import dateutil.parser |
48 | 2035039b | Giorgos Verigakis | |
49 | c738c935 | Giorgos Verigakis | from Crypto.Cipher import AES |
50 | 529178b1 | Giorgos Verigakis | |
51 | d8e50a39 | Giorgos Verigakis | from django.conf import settings |
52 | 7e2f9d4b | Giorgos Verigakis | from django.http import HttpResponse |
53 | 7e2f9d4b | Giorgos Verigakis | from django.template.loader import render_to_string |
54 | 29a59bc1 | Giorgos Verigakis | from django.utils import simplejson as json |
55 | b75555e5 | Giorgos Verigakis | from django.utils.cache import add_never_cache_headers |
56 | 7e2f9d4b | Giorgos Verigakis | |
57 | b36f78fa | Giorgos Verigakis | from synnefo.api.faults import (Fault, BadRequest, BuildInProgress, |
58 | 6dd70a5c | Christos Stavrakakis | ItemNotFound, ServiceUnavailable, Unauthorized, |
59 | 7fede91e | Christos Stavrakakis | BadMediaType) |
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 | 3a9b3cde | Giorgos Verigakis | from synnefo.plankton.backend import ImageBackend |
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 | d8e50a39 | Giorgos Verigakis | raise 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 | d8e50a39 | Giorgos Verigakis | raise 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 | d8e50a39 | Giorgos Verigakis | raise 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 | 6ef51e9f | Giorgos Verigakis | def get_vm(server_id, user_id): |
160 | d8e50a39 | Giorgos Verigakis | """Return a VirtualMachine instance or raise ItemNotFound."""
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161 | aa197ee4 | Vangelis Koukis | |
162 | d8e50a39 | Giorgos Verigakis | try:
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163 | d8e50a39 | Giorgos Verigakis | server_id = int(server_id)
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164 | 6ef51e9f | Giorgos Verigakis | return VirtualMachine.objects.get(id=server_id, userid=user_id)
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165 | d8e50a39 | Giorgos Verigakis | except ValueError: |
166 | d8e50a39 | Giorgos Verigakis | raise BadRequest('Invalid server ID.') |
167 | d8e50a39 | Giorgos Verigakis | except VirtualMachine.DoesNotExist:
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168 | d8e50a39 | Giorgos Verigakis | raise ItemNotFound('Server not found.') |
169 | d8e50a39 | Giorgos Verigakis | |
170 | a08e4270 | Vangelis Koukis | |
171 | 40777cc8 | Giorgos Verigakis | def get_vm_meta(vm, key): |
172 | d8e50a39 | Giorgos Verigakis | """Return a VirtualMachineMetadata instance or raise ItemNotFound."""
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173 | aa197ee4 | Vangelis Koukis | |
174 | d8e50a39 | Giorgos Verigakis | try:
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175 | 40777cc8 | Giorgos Verigakis | return VirtualMachineMetadata.objects.get(meta_key=key, vm=vm)
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176 | d8e50a39 | Giorgos Verigakis | except VirtualMachineMetadata.DoesNotExist:
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177 | d8e50a39 | Giorgos Verigakis | raise ItemNotFound('Metadata key not found.') |
178 | d8e50a39 | Giorgos Verigakis | |
179 | a08e4270 | Vangelis Koukis | |
180 | 6ef51e9f | Giorgos Verigakis | def get_image(image_id, user_id): |
181 | d8e50a39 | Giorgos Verigakis | """Return an Image instance or raise ItemNotFound."""
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182 | aa197ee4 | Vangelis Koukis | |
183 | 6ef51e9f | Giorgos Verigakis | backend = ImageBackend(user_id) |
184 | d8e50a39 | Giorgos Verigakis | try:
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185 | 6ef51e9f | Giorgos Verigakis | image = backend.get_image(image_id) |
186 | 3a9b3cde | Giorgos Verigakis | if not image: |
187 | 3a9b3cde | Giorgos Verigakis | raise ItemNotFound('Image not found.') |
188 | 3a9b3cde | Giorgos Verigakis | return image
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189 | 3a9b3cde | Giorgos Verigakis | finally:
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190 | 3a9b3cde | Giorgos Verigakis | backend.close() |
191 | 3a9b3cde | Giorgos Verigakis | |
192 | a08e4270 | Vangelis Koukis | |
193 | 529178b1 | Giorgos Verigakis | def get_flavor(flavor_id): |
194 | 529178b1 | Giorgos Verigakis | """Return a Flavor instance or raise ItemNotFound."""
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195 | aa197ee4 | Vangelis Koukis | |
196 | 529178b1 | Giorgos Verigakis | try:
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197 | 529178b1 | Giorgos Verigakis | flavor_id = int(flavor_id)
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198 | 529178b1 | Giorgos Verigakis | return Flavor.objects.get(id=flavor_id)
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199 | 6ef51e9f | Giorgos Verigakis | except (ValueError, Flavor.DoesNotExist): |
200 | 529178b1 | Giorgos Verigakis | raise ItemNotFound('Flavor not found.') |
201 | d8e50a39 | Giorgos Verigakis | |
202 | a08e4270 | Vangelis Koukis | |
203 | d2e73c0c | Christos Stavrakakis | def get_network(network_id, user_id, for_update=False): |
204 | e2ee7808 | Giorgos Verigakis | """Return a Network instance or raise ItemNotFound."""
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205 | aa197ee4 | Vangelis Koukis | |
206 | e2ee7808 | Giorgos Verigakis | try:
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207 | 7fede91e | Christos Stavrakakis | network_id = int(network_id)
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208 | d2e73c0c | Christos Stavrakakis | if for_update:
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209 | d2e73c0c | Christos Stavrakakis | return Network.objects.select_for_update().get(id=network_id, userid=user_id)
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210 | d2e73c0c | Christos Stavrakakis | else:
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211 | d2e73c0c | Christos Stavrakakis | return Network.objects.get(id=network_id, userid=user_id)
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212 | 6ef51e9f | Giorgos Verigakis | except (ValueError, Network.DoesNotExist): |
213 | e2ee7808 | Giorgos Verigakis | raise ItemNotFound('Network not found.') |
214 | e2ee7808 | Giorgos Verigakis | |
215 | a08e4270 | Vangelis Koukis | |
216 | b14725eb | Christos Stavrakakis | def validate_network_size(cidr_block): |
217 | b14725eb | Christos Stavrakakis | """Return True if network size is allowed."""
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218 | b14725eb | Christos Stavrakakis | return cidr_block <= 29 and cidr_block > MAX_CIDR_BLOCK |
219 | b14725eb | Christos Stavrakakis | |
220 | b14725eb | Christos Stavrakakis | |
221 | adc46059 | Christos Stavrakakis | def allocate_public_address(backend): |
222 | adc46059 | Christos Stavrakakis | """Allocate a public IP for a vm."""
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223 | adc46059 | Christos Stavrakakis | for network in backend_public_networks(backend): |
224 | adc46059 | Christos Stavrakakis | try:
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225 | adc46059 | Christos Stavrakakis | address = get_network_free_address(network) |
226 | adc46059 | Christos Stavrakakis | return (network, address)
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227 | adc46059 | Christos Stavrakakis | except EmptyPool:
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228 | adc46059 | Christos Stavrakakis | pass
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229 | adc46059 | Christos Stavrakakis | return (None, None) |
230 | adc46059 | Christos Stavrakakis | |
231 | adc46059 | Christos Stavrakakis | |
232 | 7fede91e | Christos Stavrakakis | def backend_public_networks(backend): |
233 | 7fede91e | Christos Stavrakakis | """Return available public networks of the backend.
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234 | 7fede91e | Christos Stavrakakis |
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235 | 7fede91e | Christos Stavrakakis | Iterator for non-deleted public networks that are available
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236 | 7fede91e | Christos Stavrakakis | to the specified backend.
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237 | 7fede91e | Christos Stavrakakis |
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238 | 7fede91e | Christos Stavrakakis | """
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239 | 7fede91e | Christos Stavrakakis | for network in Network.objects.filter(public=True, deleted=False): |
240 | 7fede91e | Christos Stavrakakis | if BackendNetwork.objects.filter(network=network,
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241 | 7fede91e | Christos Stavrakakis | backend=backend).exists(): |
242 | 7fede91e | Christos Stavrakakis | yield network
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243 | 7fede91e | Christos Stavrakakis | |
244 | 7fede91e | Christos Stavrakakis | |
245 | 7fede91e | Christos Stavrakakis | def get_network_free_address(network): |
246 | 7fede91e | Christos Stavrakakis | """Reserve an IP address from the IP Pool of the network.
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247 | 7fede91e | Christos Stavrakakis |
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248 | fdc94944 | Christos Stavrakakis | Raises EmptyPool
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249 | 7fede91e | Christos Stavrakakis |
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250 | 7fede91e | Christos Stavrakakis | """
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251 | 7fede91e | Christos Stavrakakis | |
252 | fdc94944 | Christos Stavrakakis | pool = network.get_pool() |
253 | fdc94944 | Christos Stavrakakis | address = pool.get() |
254 | 7fede91e | Christos Stavrakakis | pool.save() |
255 | 7fede91e | Christos Stavrakakis | return address
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256 | 7fede91e | Christos Stavrakakis | |
257 | 7fede91e | Christos Stavrakakis | |
258 | d44c236b | Giorgos Verigakis | def get_nic(machine, network): |
259 | d44c236b | Giorgos Verigakis | try:
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260 | d44c236b | Giorgos Verigakis | return NetworkInterface.objects.get(machine=machine, network=network)
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261 | d44c236b | Giorgos Verigakis | except NetworkInterface.DoesNotExist:
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262 | d44c236b | Giorgos Verigakis | raise ItemNotFound('Server not connected to this network.') |
263 | d44c236b | Giorgos Verigakis | |
264 | 7fede91e | Christos Stavrakakis | |
265 | 08b079e2 | Stavros Sachtouris | def get_nic_from_index(vm, nic_index): |
266 | 08b079e2 | Stavros Sachtouris | """Returns the nic_index-th nic of a vm
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267 | 08b079e2 | Stavros Sachtouris | Error Response Codes: itemNotFound (404), badMediaType (415)
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268 | 08b079e2 | Stavros Sachtouris | """
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269 | 08b079e2 | Stavros Sachtouris | matching_nics = vm.nics.filter(index=nic_index) |
270 | 08b079e2 | Stavros Sachtouris | matching_nics_len = len(matching_nics)
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271 | 08b079e2 | Stavros Sachtouris | if matching_nics_len < 1: |
272 | 08b079e2 | Stavros Sachtouris | raise ItemNotFound('NIC not found on VM') |
273 | 08b079e2 | Stavros Sachtouris | elif matching_nics_len > 1: |
274 | 08b079e2 | Stavros Sachtouris | raise BadMediaType('NIC index conflict on VM') |
275 | 08b079e2 | Stavros Sachtouris | nic = matching_nics[0]
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276 | 08b079e2 | Stavros Sachtouris | return nic
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277 | e2ee7808 | Giorgos Verigakis | |
278 | 7fede91e | Christos Stavrakakis | |
279 | 7e2f9d4b | Giorgos Verigakis | def get_request_dict(request): |
280 | d8e50a39 | Giorgos Verigakis | """Returns data sent by the client as a python dict."""
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281 | aa197ee4 | Vangelis Koukis | |
282 | 7e2f9d4b | Giorgos Verigakis | data = request.raw_post_data |
283 | 7e45ddef | Dimitris Moraitis | if request.META.get('CONTENT_TYPE').startswith('application/json'): |
284 | 7e2f9d4b | Giorgos Verigakis | try:
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285 | 7e2f9d4b | Giorgos Verigakis | return json.loads(data)
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286 | 7e2f9d4b | Giorgos Verigakis | except ValueError: |
287 | d8e50a39 | Giorgos Verigakis | raise BadRequest('Invalid JSON data.') |
288 | d8e50a39 | Giorgos Verigakis | else:
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289 | d8e50a39 | Giorgos Verigakis | raise BadRequest('Unsupported Content-Type.') |
290 | 7e2f9d4b | Giorgos Verigakis | |
291 | a08e4270 | Vangelis Koukis | |
292 | 8b01f7f3 | Giorgos Verigakis | def update_response_headers(request, response): |
293 | 8b01f7f3 | Giorgos Verigakis | if request.serialization == 'xml': |
294 | 8b01f7f3 | Giorgos Verigakis | response['Content-Type'] = 'application/xml' |
295 | 8b01f7f3 | Giorgos Verigakis | elif request.serialization == 'atom': |
296 | 8b01f7f3 | Giorgos Verigakis | response['Content-Type'] = 'application/atom+xml' |
297 | 8b01f7f3 | Giorgos Verigakis | else:
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298 | 8b01f7f3 | Giorgos Verigakis | response['Content-Type'] = 'application/json' |
299 | aa197ee4 | Vangelis Koukis | |
300 | 4cf8adf8 | Vangelis Koukis | if settings.TEST:
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301 | cdb65551 | Giorgos Verigakis | response['Date'] = format_date_time(time())
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302 | ce55f211 | Kostas Papadimitriou | |
303 | b75555e5 | Giorgos Verigakis | add_never_cache_headers(response) |
304 | b75555e5 | Giorgos Verigakis | |
305 | 8b01f7f3 | Giorgos Verigakis | |
306 | 432fc8c3 | Giorgos Verigakis | def render_metadata(request, metadata, use_values=False, status=200): |
307 | 432fc8c3 | Giorgos Verigakis | if request.serialization == 'xml': |
308 | 432fc8c3 | Giorgos Verigakis | data = render_to_string('metadata.xml', {'metadata': metadata}) |
309 | 432fc8c3 | Giorgos Verigakis | else:
|
310 | b36f78fa | Giorgos Verigakis | if use_values:
|
311 | b36f78fa | Giorgos Verigakis | d = {'metadata': {'values': metadata}} |
312 | b36f78fa | Giorgos Verigakis | else:
|
313 | b36f78fa | Giorgos Verigakis | d = {'metadata': metadata}
|
314 | 432fc8c3 | Giorgos Verigakis | data = json.dumps(d) |
315 | 432fc8c3 | Giorgos Verigakis | return HttpResponse(data, status=status)
|
316 | 432fc8c3 | Giorgos Verigakis | |
317 | a08e4270 | Vangelis Koukis | |
318 | 432fc8c3 | Giorgos Verigakis | def render_meta(request, meta, status=200): |
319 | 432fc8c3 | Giorgos Verigakis | if request.serialization == 'xml': |
320 | 6ef51e9f | Giorgos Verigakis | data = render_to_string('meta.xml', dict(key=key, val=val)) |
321 | 432fc8c3 | Giorgos Verigakis | else:
|
322 | 6ef51e9f | Giorgos Verigakis | data = json.dumps(dict(meta=meta))
|
323 | 432fc8c3 | Giorgos Verigakis | return HttpResponse(data, status=status)
|
324 | 432fc8c3 | Giorgos Verigakis | |
325 | a08e4270 | Vangelis Koukis | |
326 | c36934a7 | Giorgos Verigakis | def render_fault(request, fault): |
327 | 4cf8adf8 | Vangelis Koukis | if settings.DEBUG or settings.TEST: |
328 | 7e2f9d4b | Giorgos Verigakis | fault.details = format_exc(fault) |
329 | aa197ee4 | Vangelis Koukis | |
330 | d8e50a39 | Giorgos Verigakis | if request.serialization == 'xml': |
331 | d8e50a39 | Giorgos Verigakis | data = render_to_string('fault.xml', {'fault': fault}) |
332 | 7e2f9d4b | Giorgos Verigakis | else:
|
333 | b36f78fa | Giorgos Verigakis | d = {fault.name: { |
334 | b36f78fa | Giorgos Verigakis | 'code': fault.code,
|
335 | b36f78fa | Giorgos Verigakis | 'message': fault.message,
|
336 | b36f78fa | Giorgos Verigakis | 'details': fault.details}}
|
337 | 7e2f9d4b | Giorgos Verigakis | data = json.dumps(d) |
338 | aa197ee4 | Vangelis Koukis | |
339 | f0656db1 | Giorgos Verigakis | resp = HttpResponse(data, status=fault.code) |
340 | 8b01f7f3 | Giorgos Verigakis | update_response_headers(request, resp) |
341 | f0656db1 | Giorgos Verigakis | return resp
|
342 | d8e50a39 | Giorgos Verigakis | |
343 | 432fc8c3 | Giorgos Verigakis | |
344 | d8e50a39 | Giorgos Verigakis | def request_serialization(request, atom_allowed=False): |
345 | d8e50a39 | Giorgos Verigakis | """Return the serialization format requested.
|
346 | aa197ee4 | Vangelis Koukis |
|
347 | 529178b1 | Giorgos Verigakis | Valid formats are 'json', 'xml' and 'atom' if `atom_allowed` is True.
|
348 | d8e50a39 | Giorgos Verigakis | """
|
349 | aa197ee4 | Vangelis Koukis | |
350 | d8e50a39 | Giorgos Verigakis | path = request.path |
351 | aa197ee4 | Vangelis Koukis | |
352 | d8e50a39 | Giorgos Verigakis | if path.endswith('.json'): |
353 | d8e50a39 | Giorgos Verigakis | return 'json' |
354 | d8e50a39 | Giorgos Verigakis | elif path.endswith('.xml'): |
355 | d8e50a39 | Giorgos Verigakis | return 'xml' |
356 | d8e50a39 | Giorgos Verigakis | elif atom_allowed and path.endswith('.atom'): |
357 | d8e50a39 | Giorgos Verigakis | return 'atom' |
358 | aa197ee4 | Vangelis Koukis | |
359 | d8e50a39 | Giorgos Verigakis | for item in request.META.get('HTTP_ACCEPT', '').split(','): |
360 | d8e50a39 | Giorgos Verigakis | accept, sep, rest = item.strip().partition(';')
|
361 | d8e50a39 | Giorgos Verigakis | if accept == 'application/json': |
362 | d8e50a39 | Giorgos Verigakis | return 'json' |
363 | d8e50a39 | Giorgos Verigakis | elif accept == 'application/xml': |
364 | d8e50a39 | Giorgos Verigakis | return 'xml' |
365 | d8e50a39 | Giorgos Verigakis | elif atom_allowed and accept == 'application/atom+xml': |
366 | d8e50a39 | Giorgos Verigakis | return 'atom' |
367 | aa197ee4 | Vangelis Koukis | |
368 | d8e50a39 | Giorgos Verigakis | return 'json' |
369 | 7e2f9d4b | Giorgos Verigakis | |
370 | a08e4270 | Vangelis Koukis | |
371 | d8e50a39 | Giorgos Verigakis | def api_method(http_method=None, atom_allowed=False): |
372 | d8e50a39 | Giorgos Verigakis | """Decorator function for views that implement an API method."""
|
373 | aa197ee4 | Vangelis Koukis | |
374 | c36934a7 | Giorgos Verigakis | def decorator(func): |
375 | c36934a7 | Giorgos Verigakis | @wraps(func)
|
376 | c36934a7 | Giorgos Verigakis | def wrapper(request, *args, **kwargs): |
377 | c36934a7 | Giorgos Verigakis | try:
|
378 | 6ef51e9f | Giorgos Verigakis | request.serialization = request_serialization(request, |
379 | 6ef51e9f | Giorgos Verigakis | atom_allowed) |
380 | 4b3b8688 | Giorgos Verigakis | get_user(request, settings.ASTAKOS_URL) |
381 | 4b3b8688 | Giorgos Verigakis | if not request.user_uniq: |
382 | 40777cc8 | Giorgos Verigakis | raise Unauthorized('No user found.') |
383 | d8e50a39 | Giorgos Verigakis | if http_method and request.method != http_method: |
384 | d8e50a39 | Giorgos Verigakis | raise BadRequest('Method not allowed.') |
385 | 7fede91e | Christos Stavrakakis | |
386 | c36934a7 | Giorgos Verigakis | resp = func(request, *args, **kwargs) |
387 | 8b01f7f3 | Giorgos Verigakis | update_response_headers(request, resp) |
388 | c36934a7 | Giorgos Verigakis | return resp
|
389 | 5231a38a | Giorgos Verigakis | except VirtualMachine.DeletedError:
|
390 | 5231a38a | Giorgos Verigakis | fault = BadRequest('Server has been deleted.')
|
391 | 5231a38a | Giorgos Verigakis | return render_fault(request, fault)
|
392 | 5231a38a | Giorgos Verigakis | except VirtualMachine.BuildingError:
|
393 | 5231a38a | Giorgos Verigakis | fault = BuildInProgress('Server is being built.')
|
394 | 5231a38a | Giorgos Verigakis | return render_fault(request, fault)
|
395 | c36934a7 | Giorgos Verigakis | except Fault, fault:
|
396 | c36934a7 | Giorgos Verigakis | return render_fault(request, fault)
|
397 | 7fede91e | Christos Stavrakakis | except BaseException: |
398 | 9e98ba3c | Giorgos Verigakis | log.exception('Unexpected error')
|
399 | 529178b1 | Giorgos Verigakis | fault = ServiceUnavailable('Unexpected error.')
|
400 | c36934a7 | Giorgos Verigakis | return render_fault(request, fault)
|
401 | c36934a7 | Giorgos Verigakis | return wrapper
|
402 | c36934a7 | Giorgos Verigakis | return decorator
|
403 | 08b079e2 | Stavros Sachtouris | |
404 | 3165f027 | Christos Stavrakakis | |
405 | 08b079e2 | Stavros Sachtouris | def construct_nic_id(nic): |
406 | 08b079e2 | Stavros Sachtouris | return "-".join(["nic", unicode(nic.machine.id), unicode(nic.index)]) |
407 | 6dd70a5c | Christos Stavrakakis | |
408 | 6dd70a5c | Christos Stavrakakis | |
409 | af6a3bc5 | Christos Stavrakakis | def net_resources(net_type): |
410 | af6a3bc5 | Christos Stavrakakis | mac_prefix = settings.MAC_POOL_BASE |
411 | af6a3bc5 | Christos Stavrakakis | if net_type == 'PRIVATE_MAC_FILTERED': |
412 | 3165f027 | Christos Stavrakakis | link = settings.PRIVATE_MAC_FILTERED_BRIDGE |
413 | af6a3bc5 | Christos Stavrakakis | mac_pool = MacPrefixPoolTable.get_pool() |
414 | af6a3bc5 | Christos Stavrakakis | mac_prefix = mac_pool.get() |
415 | af6a3bc5 | Christos Stavrakakis | mac_pool.save() |
416 | af6a3bc5 | Christos Stavrakakis | elif net_type == 'PRIVATE_PHYSICAL_VLAN': |
417 | 03992c72 | Christos Stavrakakis | pool = BridgePoolTable.get_pool() |
418 | 03992c72 | Christos Stavrakakis | link = pool.get() |
419 | 03992c72 | Christos Stavrakakis | pool.save() |
420 | af6a3bc5 | Christos Stavrakakis | elif net_type == 'CUSTOM_ROUTED': |
421 | 3165f027 | Christos Stavrakakis | link = settings.CUSTOM_ROUTED_ROUTING_TABLE |
422 | af6a3bc5 | Christos Stavrakakis | elif net_type == 'CUSTOM_BRIDGED': |
423 | 3165f027 | Christos Stavrakakis | link = settings.CUSTOM_BRIDGED_BRIDGE |
424 | af6a3bc5 | Christos Stavrakakis | elif net_type == 'PUBLIC_ROUTED': |
425 | 3165f027 | Christos Stavrakakis | link = settings.PUBLIC_ROUTED_ROUTING_TABLE |
426 | 3165f027 | Christos Stavrakakis | else:
|
427 | af6a3bc5 | Christos Stavrakakis | raise BadRequest('Unknown network type') |
428 | 6dd70a5c | Christos Stavrakakis | |
429 | af6a3bc5 | Christos Stavrakakis | return link, mac_prefix |