root / snf-cyclades-app / synnefo / api / util.py @ 2db7d9df
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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 | d3406fbc | Christos Stavrakakis | from django.db.models import Q |
57 | 7e2f9d4b | Giorgos Verigakis | |
58 | b36f78fa | Giorgos Verigakis | from synnefo.api.faults import (Fault, BadRequest, BuildInProgress, |
59 | 6dd70a5c | Christos Stavrakakis | ItemNotFound, ServiceUnavailable, Unauthorized, |
60 | 17c2ed57 | Christos Stavrakakis | BadMediaType, Forbidden) |
61 | 6ef51e9f | Giorgos Verigakis | from synnefo.db.models import (Flavor, VirtualMachine, VirtualMachineMetadata, |
62 | 7fede91e | Christos Stavrakakis | Network, BackendNetwork, NetworkInterface, |
63 | af6a3bc5 | Christos Stavrakakis | BridgePoolTable, MacPrefixPoolTable) |
64 | adc46059 | Christos Stavrakakis | from synnefo.db.pools import EmptyPool |
65 | 6dd70a5c | Christos Stavrakakis | |
66 | 4b3b8688 | Giorgos Verigakis | from synnefo.lib.astakos import get_user |
67 | 2db7d9df | Christos Stavrakakis | from synnefo.plankton.backend import ImageBackend, NotAllowedError |
68 | b14725eb | Christos Stavrakakis | from synnefo.settings import MAX_CIDR_BLOCK |
69 | 9e98ba3c | Giorgos Verigakis | |
70 | 9e98ba3c | Giorgos Verigakis | |
71 | 9e98ba3c | Giorgos Verigakis | log = getLogger('synnefo.api')
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72 | 9e98ba3c | Giorgos Verigakis | |
73 | 7e2f9d4b | Giorgos Verigakis | |
74 | d8e50a39 | Giorgos Verigakis | class UTC(tzinfo): |
75 | d8e50a39 | Giorgos Verigakis | def utcoffset(self, dt): |
76 | d8e50a39 | Giorgos Verigakis | return timedelta(0) |
77 | aa197ee4 | Vangelis Koukis | |
78 | d8e50a39 | Giorgos Verigakis | def tzname(self, dt): |
79 | d8e50a39 | Giorgos Verigakis | return 'UTC' |
80 | aa197ee4 | Vangelis Koukis | |
81 | d8e50a39 | Giorgos Verigakis | def dst(self, dt): |
82 | d8e50a39 | Giorgos Verigakis | return timedelta(0) |
83 | 7e2f9d4b | Giorgos Verigakis | |
84 | 7e2f9d4b | Giorgos Verigakis | |
85 | d8e50a39 | Giorgos Verigakis | def isoformat(d): |
86 | 529178b1 | Giorgos Verigakis | """Return an ISO8601 date string that includes a timezone."""
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87 | aa197ee4 | Vangelis Koukis | |
88 | d8e50a39 | Giorgos Verigakis | return d.replace(tzinfo=UTC()).isoformat()
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89 | d8e50a39 | Giorgos Verigakis | |
90 | a08e4270 | Vangelis Koukis | |
91 | d8e50a39 | Giorgos Verigakis | def isoparse(s): |
92 | d8e50a39 | Giorgos Verigakis | """Parse an ISO8601 date string into a datetime object."""
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93 | aa197ee4 | Vangelis Koukis | |
94 | d8e50a39 | Giorgos Verigakis | if not s: |
95 | d8e50a39 | Giorgos Verigakis | return None |
96 | aa197ee4 | Vangelis Koukis | |
97 | d8e50a39 | Giorgos Verigakis | try:
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98 | d8e50a39 | Giorgos Verigakis | since = dateutil.parser.parse(s) |
99 | e87d30f3 | Giorgos Verigakis | utc_since = since.astimezone(UTC()).replace(tzinfo=None)
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100 | d8e50a39 | Giorgos Verigakis | except ValueError: |
101 | d8e50a39 | Giorgos Verigakis | raise BadRequest('Invalid changes-since parameter.') |
102 | aa197ee4 | Vangelis Koukis | |
103 | e87d30f3 | Giorgos Verigakis | now = datetime.datetime.now() |
104 | e87d30f3 | Giorgos Verigakis | if utc_since > now:
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105 | d8e50a39 | Giorgos Verigakis | raise BadRequest('changes-since value set in the future.') |
106 | aa197ee4 | Vangelis Koukis | |
107 | e87d30f3 | Giorgos Verigakis | if now - utc_since > timedelta(seconds=settings.POLL_LIMIT):
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108 | d8e50a39 | Giorgos Verigakis | raise BadRequest('Too old changes-since value.') |
109 | aa197ee4 | Vangelis Koukis | |
110 | 0140e54b | Vangelis Koukis | return utc_since
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111 | aa197ee4 | Vangelis Koukis | |
112 | dca2a31f | Giorgos Verigakis | |
113 | dca2a31f | Giorgos Verigakis | def random_password(): |
114 | dca2a31f | Giorgos Verigakis | """Generates a random password
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115 | ce55f211 | Kostas Papadimitriou |
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116 | 62eac5a6 | Giorgos Verigakis | We generate a windows compliant password: it must contain at least
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117 | dca2a31f | Giorgos Verigakis | one charachter from each of the groups: upper case, lower case, digits.
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118 | dca2a31f | Giorgos Verigakis | """
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119 | ce55f211 | Kostas Papadimitriou | |
120 | dca2a31f | Giorgos Verigakis | pool = lowercase + uppercase + digits |
121 | dca2a31f | Giorgos Verigakis | lowerset = set(lowercase)
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122 | dca2a31f | Giorgos Verigakis | upperset = set(uppercase)
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123 | dca2a31f | Giorgos Verigakis | digitset = set(digits)
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124 | dca2a31f | Giorgos Verigakis | length = 10
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125 | ce55f211 | Kostas Papadimitriou | |
126 | 62eac5a6 | Giorgos Verigakis | password = ''.join(choice(pool) for i in range(length - 2)) |
127 | ce55f211 | Kostas Papadimitriou | |
128 | 62eac5a6 | Giorgos Verigakis | # Make sure the password is compliant
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129 | 62eac5a6 | Giorgos Verigakis | chars = set(password)
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130 | 62eac5a6 | Giorgos Verigakis | if not chars & lowerset: |
131 | 62eac5a6 | Giorgos Verigakis | password += choice(lowercase) |
132 | 62eac5a6 | Giorgos Verigakis | if not chars & upperset: |
133 | 62eac5a6 | Giorgos Verigakis | password += choice(uppercase) |
134 | 62eac5a6 | Giorgos Verigakis | if not chars & digitset: |
135 | 62eac5a6 | Giorgos Verigakis | password += choice(digits) |
136 | ce55f211 | Kostas Papadimitriou | |
137 | 62eac5a6 | Giorgos Verigakis | # Pad if necessary to reach required length
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138 | 62eac5a6 | Giorgos Verigakis | password += ''.join(choice(pool) for i in range(length - len(password))) |
139 | ce55f211 | Kostas Papadimitriou | |
140 | dca2a31f | Giorgos Verigakis | return password
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141 | dca2a31f | Giorgos Verigakis | |
142 | d8e50a39 | Giorgos Verigakis | |
143 | c738c935 | Giorgos Verigakis | def zeropad(s): |
144 | c738c935 | Giorgos Verigakis | """Add zeros at the end of a string in order to make its length
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145 | c738c935 | Giorgos Verigakis | a multiple of 16."""
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146 | d1387ed7 | Christodoulos Psaltis | |
147 | c738c935 | Giorgos Verigakis | npad = 16 - len(s) % 16 |
148 | c738c935 | Giorgos Verigakis | return s + '\x00' * npad |
149 | c738c935 | Giorgos Verigakis | |
150 | a08e4270 | Vangelis Koukis | |
151 | c738c935 | Giorgos Verigakis | def encrypt(plaintext): |
152 | c738c935 | Giorgos Verigakis | # Make sure key is 32 bytes long
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153 | c738c935 | Giorgos Verigakis | key = sha256(settings.SECRET_KEY).digest() |
154 | d1387ed7 | Christodoulos Psaltis | |
155 | c738c935 | Giorgos Verigakis | aes = AES.new(key) |
156 | c738c935 | Giorgos Verigakis | enc = aes.encrypt(zeropad(plaintext)) |
157 | c738c935 | Giorgos Verigakis | return b64encode(enc)
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158 | c738c935 | Giorgos Verigakis | |
159 | 7e2f9d4b | Giorgos Verigakis | |
160 | 7f2dbcad | Christos Stavrakakis | def get_vm(server_id, user_id, for_update=False, non_deleted=False, |
161 | 7f2dbcad | Christos Stavrakakis | non_suspended=False):
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162 | e221ade2 | Christos Stavrakakis | """Find a VirtualMachine instance based on ID and owner."""
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163 | aa197ee4 | Vangelis Koukis | |
164 | d8e50a39 | Giorgos Verigakis | try:
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165 | d8e50a39 | Giorgos Verigakis | server_id = int(server_id)
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166 | 7f2dbcad | Christos Stavrakakis | servers = VirtualMachine.objects |
167 | 7f2dbcad | Christos Stavrakakis | if for_update:
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168 | 7f2dbcad | Christos Stavrakakis | servers = servers.select_for_update() |
169 | 7f2dbcad | Christos Stavrakakis | vm = servers.get(id=server_id, userid=user_id) |
170 | e221ade2 | Christos Stavrakakis | if non_deleted and vm.deleted: |
171 | e221ade2 | Christos Stavrakakis | raise VirtualMachine.DeletedError
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172 | e221ade2 | Christos Stavrakakis | if non_suspended and vm.suspended: |
173 | 17c2ed57 | Christos Stavrakakis | raise Forbidden("Administratively Suspended VM") |
174 | 3a522cff | Christos Stavrakakis | return vm
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175 | d8e50a39 | Giorgos Verigakis | except ValueError: |
176 | d8e50a39 | Giorgos Verigakis | raise BadRequest('Invalid server ID.') |
177 | d8e50a39 | Giorgos Verigakis | except VirtualMachine.DoesNotExist:
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178 | d8e50a39 | Giorgos Verigakis | raise ItemNotFound('Server not found.') |
179 | d8e50a39 | Giorgos Verigakis | |
180 | 7f2dbcad | Christos Stavrakakis | |
181 | 40777cc8 | Giorgos Verigakis | def get_vm_meta(vm, key): |
182 | d8e50a39 | Giorgos Verigakis | """Return a VirtualMachineMetadata instance or raise ItemNotFound."""
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183 | aa197ee4 | Vangelis Koukis | |
184 | d8e50a39 | Giorgos Verigakis | try:
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185 | 40777cc8 | Giorgos Verigakis | return VirtualMachineMetadata.objects.get(meta_key=key, vm=vm)
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186 | d8e50a39 | Giorgos Verigakis | except VirtualMachineMetadata.DoesNotExist:
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187 | d8e50a39 | Giorgos Verigakis | raise ItemNotFound('Metadata key not found.') |
188 | d8e50a39 | Giorgos Verigakis | |
189 | a08e4270 | Vangelis Koukis | |
190 | 6ef51e9f | Giorgos Verigakis | def get_image(image_id, user_id): |
191 | d8e50a39 | Giorgos Verigakis | """Return an Image instance or raise ItemNotFound."""
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192 | aa197ee4 | Vangelis Koukis | |
193 | 6ef51e9f | Giorgos Verigakis | backend = ImageBackend(user_id) |
194 | d8e50a39 | Giorgos Verigakis | try:
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195 | 6ef51e9f | Giorgos Verigakis | image = backend.get_image(image_id) |
196 | 3a9b3cde | Giorgos Verigakis | if not image: |
197 | 3a9b3cde | Giorgos Verigakis | raise ItemNotFound('Image not found.') |
198 | 3a9b3cde | Giorgos Verigakis | return image
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199 | 3a9b3cde | Giorgos Verigakis | finally:
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200 | 3a9b3cde | Giorgos Verigakis | backend.close() |
201 | 3a9b3cde | Giorgos Verigakis | |
202 | a08e4270 | Vangelis Koukis | |
203 | aa8230bd | Christos Stavrakakis | def get_flavor(flavor_id, include_deleted=False): |
204 | 529178b1 | Giorgos Verigakis | """Return a Flavor instance or raise ItemNotFound."""
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205 | aa197ee4 | Vangelis Koukis | |
206 | 529178b1 | Giorgos Verigakis | try:
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207 | 529178b1 | Giorgos Verigakis | flavor_id = int(flavor_id)
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208 | aa8230bd | Christos Stavrakakis | if include_deleted:
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209 | aa8230bd | Christos Stavrakakis | return Flavor.objects.get(id=flavor_id)
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210 | aa8230bd | Christos Stavrakakis | else:
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211 | aa8230bd | Christos Stavrakakis | return Flavor.objects.get(id=flavor_id, deleted=include_deleted)
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212 | 6ef51e9f | Giorgos Verigakis | except (ValueError, Flavor.DoesNotExist): |
213 | 529178b1 | Giorgos Verigakis | raise ItemNotFound('Flavor not found.') |
214 | d8e50a39 | Giorgos Verigakis | |
215 | a08e4270 | Vangelis Koukis | |
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 | e2ee7808 | Giorgos Verigakis | raise ItemNotFound('Network not found.') |
227 | e2ee7808 | Giorgos Verigakis | |
228 | a08e4270 | Vangelis Koukis | |
229 | b14725eb | Christos Stavrakakis | def validate_network_size(cidr_block): |
230 | b14725eb | Christos Stavrakakis | """Return True if network size is allowed."""
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231 | b14725eb | Christos Stavrakakis | return cidr_block <= 29 and cidr_block > MAX_CIDR_BLOCK |
232 | b14725eb | Christos Stavrakakis | |
233 | b14725eb | Christos Stavrakakis | |
234 | adc46059 | Christos Stavrakakis | def allocate_public_address(backend): |
235 | adc46059 | Christos Stavrakakis | """Allocate a public IP for a vm."""
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236 | adc46059 | Christos Stavrakakis | for network in backend_public_networks(backend): |
237 | adc46059 | Christos Stavrakakis | try:
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238 | adc46059 | Christos Stavrakakis | address = get_network_free_address(network) |
239 | adc46059 | Christos Stavrakakis | return (network, address)
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240 | adc46059 | Christos Stavrakakis | except EmptyPool:
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241 | adc46059 | Christos Stavrakakis | pass
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242 | adc46059 | Christos Stavrakakis | return (None, None) |
243 | adc46059 | Christos Stavrakakis | |
244 | adc46059 | Christos Stavrakakis | |
245 | 7fede91e | Christos Stavrakakis | def backend_public_networks(backend): |
246 | 7fede91e | Christos Stavrakakis | """Return available public networks of the backend.
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247 | 7fede91e | Christos Stavrakakis |
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248 | 7fede91e | Christos Stavrakakis | Iterator for non-deleted public networks that are available
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249 | 7fede91e | Christos Stavrakakis | to the specified backend.
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250 | 7fede91e | Christos Stavrakakis |
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251 | 7fede91e | Christos Stavrakakis | """
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252 | 7fede91e | Christos Stavrakakis | for network in Network.objects.filter(public=True, deleted=False): |
253 | 7fede91e | Christos Stavrakakis | if BackendNetwork.objects.filter(network=network,
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254 | 7fede91e | Christos Stavrakakis | backend=backend).exists(): |
255 | 7fede91e | Christos Stavrakakis | yield network
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256 | 7fede91e | Christos Stavrakakis | |
257 | 7fede91e | Christos Stavrakakis | |
258 | 7fede91e | Christos Stavrakakis | def get_network_free_address(network): |
259 | 7fede91e | Christos Stavrakakis | """Reserve an IP address from the IP Pool of the network.
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260 | 7fede91e | Christos Stavrakakis |
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261 | fdc94944 | Christos Stavrakakis | Raises EmptyPool
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262 | 7fede91e | Christos Stavrakakis |
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263 | 7fede91e | Christos Stavrakakis | """
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264 | 7fede91e | Christos Stavrakakis | |
265 | fdc94944 | Christos Stavrakakis | pool = network.get_pool() |
266 | fdc94944 | Christos Stavrakakis | address = pool.get() |
267 | 7fede91e | Christos Stavrakakis | pool.save() |
268 | 7fede91e | Christos Stavrakakis | return address
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269 | 7fede91e | Christos Stavrakakis | |
270 | 7fede91e | Christos Stavrakakis | |
271 | d44c236b | Giorgos Verigakis | def get_nic(machine, network): |
272 | d44c236b | Giorgos Verigakis | try:
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273 | d44c236b | Giorgos Verigakis | return NetworkInterface.objects.get(machine=machine, network=network)
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274 | d44c236b | Giorgos Verigakis | except NetworkInterface.DoesNotExist:
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275 | d44c236b | Giorgos Verigakis | raise ItemNotFound('Server not connected to this network.') |
276 | d44c236b | Giorgos Verigakis | |
277 | 7fede91e | Christos Stavrakakis | |
278 | 08b079e2 | Stavros Sachtouris | def get_nic_from_index(vm, nic_index): |
279 | 08b079e2 | Stavros Sachtouris | """Returns the nic_index-th nic of a vm
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280 | 08b079e2 | Stavros Sachtouris | Error Response Codes: itemNotFound (404), badMediaType (415)
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281 | 08b079e2 | Stavros Sachtouris | """
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282 | 08b079e2 | Stavros Sachtouris | matching_nics = vm.nics.filter(index=nic_index) |
283 | 08b079e2 | Stavros Sachtouris | matching_nics_len = len(matching_nics)
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284 | 08b079e2 | Stavros Sachtouris | if matching_nics_len < 1: |
285 | 08b079e2 | Stavros Sachtouris | raise ItemNotFound('NIC not found on VM') |
286 | 08b079e2 | Stavros Sachtouris | elif matching_nics_len > 1: |
287 | 08b079e2 | Stavros Sachtouris | raise BadMediaType('NIC index conflict on VM') |
288 | 08b079e2 | Stavros Sachtouris | nic = matching_nics[0]
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289 | 08b079e2 | Stavros Sachtouris | return nic
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290 | e2ee7808 | Giorgos Verigakis | |
291 | 7fede91e | Christos Stavrakakis | |
292 | 7e2f9d4b | Giorgos Verigakis | def get_request_dict(request): |
293 | d8e50a39 | Giorgos Verigakis | """Returns data sent by the client as a python dict."""
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294 | aa197ee4 | Vangelis Koukis | |
295 | 7e2f9d4b | Giorgos Verigakis | data = request.raw_post_data |
296 | 7e45ddef | Dimitris Moraitis | if request.META.get('CONTENT_TYPE').startswith('application/json'): |
297 | 7e2f9d4b | Giorgos Verigakis | try:
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298 | 7e2f9d4b | Giorgos Verigakis | return json.loads(data)
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299 | 7e2f9d4b | Giorgos Verigakis | except ValueError: |
300 | d8e50a39 | Giorgos Verigakis | raise BadRequest('Invalid JSON data.') |
301 | d8e50a39 | Giorgos Verigakis | else:
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302 | d8e50a39 | Giorgos Verigakis | raise BadRequest('Unsupported Content-Type.') |
303 | 7e2f9d4b | Giorgos Verigakis | |
304 | a08e4270 | Vangelis Koukis | |
305 | 8b01f7f3 | Giorgos Verigakis | def update_response_headers(request, response): |
306 | 8b01f7f3 | Giorgos Verigakis | if request.serialization == 'xml': |
307 | 8b01f7f3 | Giorgos Verigakis | response['Content-Type'] = 'application/xml' |
308 | 8b01f7f3 | Giorgos Verigakis | elif request.serialization == 'atom': |
309 | 8b01f7f3 | Giorgos Verigakis | response['Content-Type'] = 'application/atom+xml' |
310 | 8b01f7f3 | Giorgos Verigakis | else:
|
311 | 8b01f7f3 | Giorgos Verigakis | response['Content-Type'] = 'application/json' |
312 | aa197ee4 | Vangelis Koukis | |
313 | 4cf8adf8 | Vangelis Koukis | if settings.TEST:
|
314 | cdb65551 | Giorgos Verigakis | response['Date'] = format_date_time(time())
|
315 | ce55f211 | Kostas Papadimitriou | |
316 | b75555e5 | Giorgos Verigakis | add_never_cache_headers(response) |
317 | b75555e5 | Giorgos Verigakis | |
318 | 8b01f7f3 | Giorgos Verigakis | |
319 | 432fc8c3 | Giorgos Verigakis | def render_metadata(request, metadata, use_values=False, status=200): |
320 | 432fc8c3 | Giorgos Verigakis | if request.serialization == 'xml': |
321 | 432fc8c3 | Giorgos Verigakis | data = render_to_string('metadata.xml', {'metadata': metadata}) |
322 | 432fc8c3 | Giorgos Verigakis | else:
|
323 | b36f78fa | Giorgos Verigakis | if use_values:
|
324 | b36f78fa | Giorgos Verigakis | d = {'metadata': {'values': metadata}} |
325 | b36f78fa | Giorgos Verigakis | else:
|
326 | b36f78fa | Giorgos Verigakis | d = {'metadata': metadata}
|
327 | 432fc8c3 | Giorgos Verigakis | data = json.dumps(d) |
328 | 432fc8c3 | Giorgos Verigakis | return HttpResponse(data, status=status)
|
329 | 432fc8c3 | Giorgos Verigakis | |
330 | a08e4270 | Vangelis Koukis | |
331 | 432fc8c3 | Giorgos Verigakis | def render_meta(request, meta, status=200): |
332 | 432fc8c3 | Giorgos Verigakis | if request.serialization == 'xml': |
333 | 6ef51e9f | Giorgos Verigakis | data = render_to_string('meta.xml', dict(key=key, val=val)) |
334 | 432fc8c3 | Giorgos Verigakis | else:
|
335 | 6ef51e9f | Giorgos Verigakis | data = json.dumps(dict(meta=meta))
|
336 | 432fc8c3 | Giorgos Verigakis | return HttpResponse(data, status=status)
|
337 | 432fc8c3 | Giorgos Verigakis | |
338 | a08e4270 | Vangelis Koukis | |
339 | c36934a7 | Giorgos Verigakis | def render_fault(request, fault): |
340 | 4cf8adf8 | Vangelis Koukis | if settings.DEBUG or settings.TEST: |
341 | 7e2f9d4b | Giorgos Verigakis | fault.details = format_exc(fault) |
342 | aa197ee4 | Vangelis Koukis | |
343 | d8e50a39 | Giorgos Verigakis | if request.serialization == 'xml': |
344 | d8e50a39 | Giorgos Verigakis | data = render_to_string('fault.xml', {'fault': fault}) |
345 | 7e2f9d4b | Giorgos Verigakis | else:
|
346 | b36f78fa | Giorgos Verigakis | d = {fault.name: { |
347 | b36f78fa | Giorgos Verigakis | 'code': fault.code,
|
348 | b36f78fa | Giorgos Verigakis | 'message': fault.message,
|
349 | b36f78fa | Giorgos Verigakis | 'details': fault.details}}
|
350 | 7e2f9d4b | Giorgos Verigakis | data = json.dumps(d) |
351 | aa197ee4 | Vangelis Koukis | |
352 | f0656db1 | Giorgos Verigakis | resp = HttpResponse(data, status=fault.code) |
353 | 8b01f7f3 | Giorgos Verigakis | update_response_headers(request, resp) |
354 | f0656db1 | Giorgos Verigakis | return resp
|
355 | d8e50a39 | Giorgos Verigakis | |
356 | 432fc8c3 | Giorgos Verigakis | |
357 | d8e50a39 | Giorgos Verigakis | def request_serialization(request, atom_allowed=False): |
358 | d8e50a39 | Giorgos Verigakis | """Return the serialization format requested.
|
359 | aa197ee4 | Vangelis Koukis |
|
360 | 529178b1 | Giorgos Verigakis | Valid formats are 'json', 'xml' and 'atom' if `atom_allowed` is True.
|
361 | d8e50a39 | Giorgos Verigakis | """
|
362 | aa197ee4 | Vangelis Koukis | |
363 | d8e50a39 | Giorgos Verigakis | path = request.path |
364 | aa197ee4 | Vangelis Koukis | |
365 | d8e50a39 | Giorgos Verigakis | if path.endswith('.json'): |
366 | d8e50a39 | Giorgos Verigakis | return 'json' |
367 | d8e50a39 | Giorgos Verigakis | elif path.endswith('.xml'): |
368 | d8e50a39 | Giorgos Verigakis | return 'xml' |
369 | d8e50a39 | Giorgos Verigakis | elif atom_allowed and path.endswith('.atom'): |
370 | d8e50a39 | Giorgos Verigakis | return 'atom' |
371 | aa197ee4 | Vangelis Koukis | |
372 | d8e50a39 | Giorgos Verigakis | for item in request.META.get('HTTP_ACCEPT', '').split(','): |
373 | d8e50a39 | Giorgos Verigakis | accept, sep, rest = item.strip().partition(';')
|
374 | d8e50a39 | Giorgos Verigakis | if accept == 'application/json': |
375 | d8e50a39 | Giorgos Verigakis | return 'json' |
376 | d8e50a39 | Giorgos Verigakis | elif accept == 'application/xml': |
377 | d8e50a39 | Giorgos Verigakis | return 'xml' |
378 | d8e50a39 | Giorgos Verigakis | elif atom_allowed and accept == 'application/atom+xml': |
379 | d8e50a39 | Giorgos Verigakis | return 'atom' |
380 | aa197ee4 | Vangelis Koukis | |
381 | d8e50a39 | Giorgos Verigakis | return 'json' |
382 | 7e2f9d4b | Giorgos Verigakis | |
383 | a08e4270 | Vangelis Koukis | |
384 | d8e50a39 | Giorgos Verigakis | def api_method(http_method=None, atom_allowed=False): |
385 | d8e50a39 | Giorgos Verigakis | """Decorator function for views that implement an API method."""
|
386 | aa197ee4 | Vangelis Koukis | |
387 | c36934a7 | Giorgos Verigakis | def decorator(func): |
388 | c36934a7 | Giorgos Verigakis | @wraps(func)
|
389 | c36934a7 | Giorgos Verigakis | def wrapper(request, *args, **kwargs): |
390 | c36934a7 | Giorgos Verigakis | try:
|
391 | 6ef51e9f | Giorgos Verigakis | request.serialization = request_serialization(request, |
392 | 6ef51e9f | Giorgos Verigakis | atom_allowed) |
393 | 4b3b8688 | Giorgos Verigakis | get_user(request, settings.ASTAKOS_URL) |
394 | 4b3b8688 | Giorgos Verigakis | if not request.user_uniq: |
395 | 40777cc8 | Giorgos Verigakis | raise Unauthorized('No user found.') |
396 | d8e50a39 | Giorgos Verigakis | if http_method and request.method != http_method: |
397 | d8e50a39 | Giorgos Verigakis | raise BadRequest('Method not allowed.') |
398 | 7fede91e | Christos Stavrakakis | |
399 | c36934a7 | Giorgos Verigakis | resp = func(request, *args, **kwargs) |
400 | 8b01f7f3 | Giorgos Verigakis | update_response_headers(request, resp) |
401 | c36934a7 | Giorgos Verigakis | return resp
|
402 | 5231a38a | Giorgos Verigakis | except VirtualMachine.DeletedError:
|
403 | 5231a38a | Giorgos Verigakis | fault = BadRequest('Server has been deleted.')
|
404 | 5231a38a | Giorgos Verigakis | return render_fault(request, fault)
|
405 | 22a9959d | Christos Stavrakakis | except Network.DeletedError:
|
406 | 22a9959d | Christos Stavrakakis | fault = BadRequest('Network has been deleted.')
|
407 | 22a9959d | Christos Stavrakakis | return render_fault(request, fault)
|
408 | 5231a38a | Giorgos Verigakis | except VirtualMachine.BuildingError:
|
409 | 5231a38a | Giorgos Verigakis | fault = BuildInProgress('Server is being built.')
|
410 | 5231a38a | Giorgos Verigakis | return render_fault(request, fault)
|
411 | 2db7d9df | Christos Stavrakakis | except NotAllowedError:
|
412 | 2db7d9df | Christos Stavrakakis | # Image Backend Unathorized
|
413 | 2db7d9df | Christos Stavrakakis | fault = Forbidden('Request not allowed.')
|
414 | 2db7d9df | Christos Stavrakakis | return render_fault(request, fault)
|
415 | c36934a7 | Giorgos Verigakis | except Fault, fault:
|
416 | 260147b1 | Christos Stavrakakis | if fault.code >= 500: |
417 | 260147b1 | Christos Stavrakakis | log.exception('API fault')
|
418 | c36934a7 | Giorgos Verigakis | return render_fault(request, fault)
|
419 | 7fede91e | Christos Stavrakakis | except BaseException: |
420 | 9e98ba3c | Giorgos Verigakis | log.exception('Unexpected error')
|
421 | 529178b1 | Giorgos Verigakis | fault = ServiceUnavailable('Unexpected error.')
|
422 | c36934a7 | Giorgos Verigakis | return render_fault(request, fault)
|
423 | c36934a7 | Giorgos Verigakis | return wrapper
|
424 | c36934a7 | Giorgos Verigakis | return decorator
|
425 | 08b079e2 | Stavros Sachtouris | |
426 | 3165f027 | Christos Stavrakakis | |
427 | 08b079e2 | Stavros Sachtouris | def construct_nic_id(nic): |
428 | 08b079e2 | Stavros Sachtouris | return "-".join(["nic", unicode(nic.machine.id), unicode(nic.index)]) |
429 | 6dd70a5c | Christos Stavrakakis | |
430 | 6dd70a5c | Christos Stavrakakis | |
431 | af6a3bc5 | Christos Stavrakakis | def net_resources(net_type): |
432 | af6a3bc5 | Christos Stavrakakis | mac_prefix = settings.MAC_POOL_BASE |
433 | af6a3bc5 | Christos Stavrakakis | if net_type == 'PRIVATE_MAC_FILTERED': |
434 | 3165f027 | Christos Stavrakakis | link = settings.PRIVATE_MAC_FILTERED_BRIDGE |
435 | af6a3bc5 | Christos Stavrakakis | mac_pool = MacPrefixPoolTable.get_pool() |
436 | af6a3bc5 | Christos Stavrakakis | mac_prefix = mac_pool.get() |
437 | af6a3bc5 | Christos Stavrakakis | mac_pool.save() |
438 | af6a3bc5 | Christos Stavrakakis | elif net_type == 'PRIVATE_PHYSICAL_VLAN': |
439 | 03992c72 | Christos Stavrakakis | pool = BridgePoolTable.get_pool() |
440 | 03992c72 | Christos Stavrakakis | link = pool.get() |
441 | 03992c72 | Christos Stavrakakis | pool.save() |
442 | af6a3bc5 | Christos Stavrakakis | elif net_type == 'CUSTOM_ROUTED': |
443 | 3165f027 | Christos Stavrakakis | link = settings.CUSTOM_ROUTED_ROUTING_TABLE |
444 | af6a3bc5 | Christos Stavrakakis | elif net_type == 'CUSTOM_BRIDGED': |
445 | 3165f027 | Christos Stavrakakis | link = settings.CUSTOM_BRIDGED_BRIDGE |
446 | af6a3bc5 | Christos Stavrakakis | elif net_type == 'PUBLIC_ROUTED': |
447 | 3165f027 | Christos Stavrakakis | link = settings.PUBLIC_ROUTED_ROUTING_TABLE |
448 | 3165f027 | Christos Stavrakakis | else:
|
449 | af6a3bc5 | Christos Stavrakakis | raise BadRequest('Unknown network type') |
450 | 6dd70a5c | Christos Stavrakakis | |
451 | af6a3bc5 | Christos Stavrakakis | return link, mac_prefix |