root / db / models.py @ ace4bd5d
History | View | Annotate | Download (17.1 kB)
1 |
# vim: ts=4 sts=4 et ai sw=4 fileencoding=utf-8
|
---|---|
2 |
# Copyright 2011 GRNET S.A. All rights reserved.
|
3 |
#
|
4 |
# Redistribution and use in source and binary forms, with or without
|
5 |
# modification, are permitted provided that the following conditions
|
6 |
# are met:
|
7 |
#
|
8 |
# 1. Redistributions of source code must retain the above copyright
|
9 |
# notice, this list of conditions and the following disclaimer.
|
10 |
#
|
11 |
# 2. Redistributions in binary form must reproduce the above copyright
|
12 |
# notice, this list of conditions and the following disclaimer in the
|
13 |
# documentation and/or other materials provided with the distribution.
|
14 |
#
|
15 |
# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
16 |
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
17 |
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
18 |
# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
19 |
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
20 |
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
21 |
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
22 |
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
23 |
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
24 |
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
25 |
# SUCH DAMAGE.
|
26 |
#
|
27 |
# The views and conclusions contained in the software and documentation are
|
28 |
# those of the authors and should not be interpreted as representing official
|
29 |
# policies, either expressed or implied, of GRNET S.A.
|
30 |
|
31 |
|
32 |
from django.conf import settings |
33 |
from django.db import models |
34 |
|
35 |
import datetime |
36 |
|
37 |
class SynnefoUser(models.Model): |
38 |
|
39 |
#TODO: Amend this when we have groups
|
40 |
ACCOUNT_TYPE = ( |
41 |
('STUDENT', 'Student'), |
42 |
('PROFESSOR', 'Professor'), |
43 |
('USER', 'Generic User') |
44 |
) |
45 |
|
46 |
name = models.CharField('Synnefo Username', max_length=255, default='') |
47 |
realname = models.CharField('Real Name', max_length=255, default='') |
48 |
uniq = models.CharField('External Unique ID', max_length=255,null=True) |
49 |
credit = models.IntegerField('Credit Balance')
|
50 |
auth_token = models.CharField('Authentication Token', max_length=32, null=True) |
51 |
auth_token_created = models.DateTimeField('Time of auth token creation', auto_now_add=True, null = True) |
52 |
auth_token_expires = models.DateTimeField('Time of auth token expiration', auto_now_add=True, null = True) |
53 |
type = models.CharField('Current Image State', choices=ACCOUNT_TYPE, max_length=30) |
54 |
created = models.DateTimeField('Time of creation', auto_now_add=True) |
55 |
updated = models.DateTimeField('Time of last update', auto_now=True) |
56 |
|
57 |
class Meta: |
58 |
verbose_name = u'Synnefo User'
|
59 |
|
60 |
def __unicode__(self): |
61 |
return self.name |
62 |
|
63 |
def get_limit(self, limit_name): |
64 |
"""Returns the limit value for the specified limit"""
|
65 |
limit_objs = Limit.objects.filter(name=limit_name, user=self)
|
66 |
if len(limit_objs) == 1: |
67 |
return limit_objs[0].value |
68 |
|
69 |
return 0 |
70 |
|
71 |
def _get_credit_quota(self): |
72 |
"""Internal getter function for credit quota"""
|
73 |
return self.get_limit('QUOTA_CREDIT') |
74 |
|
75 |
credit_quota = property(_get_credit_quota)
|
76 |
|
77 |
def _get_monthly_rate(self): |
78 |
"""Internal getter function for monthly credit issue rate"""
|
79 |
return self.get_limit('MONTHLY_RATE') |
80 |
|
81 |
monthly_rate = property(_get_monthly_rate)
|
82 |
|
83 |
def _get_min_credits(self): |
84 |
"""Internal getter function for maximum number of violations"""
|
85 |
return self.get_limit('MIN_CREDITS') |
86 |
|
87 |
min_credits = property(_get_min_credits)
|
88 |
|
89 |
|
90 |
class Image(models.Model): |
91 |
# This is WIP, FIXME
|
92 |
IMAGE_STATES = ( |
93 |
('ACTIVE', 'Active'), |
94 |
('SAVING', 'Saving'), |
95 |
('DELETED', 'Deleted') |
96 |
) |
97 |
|
98 |
# The list of supported Image formats
|
99 |
FORMATS = ( |
100 |
('dump', 'ext2 dump'), |
101 |
('lvm', 'lvm snapshot') |
102 |
) |
103 |
|
104 |
name = models.CharField('Image name', max_length=255) |
105 |
state = models.CharField('Current Image State', choices=IMAGE_STATES,
|
106 |
max_length=30)
|
107 |
owner = models.ForeignKey(SynnefoUser, blank=True, null=True) |
108 |
created = models.DateTimeField('Time of creation', auto_now_add=True) |
109 |
updated = models.DateTimeField('Time of last update', auto_now=True) |
110 |
sourcevm = models.ForeignKey("VirtualMachine", null=True) |
111 |
backend_id = models.CharField(max_length=50, default='debian_base') |
112 |
format = models.CharField(choices=FORMATS, max_length=30, default='dump') |
113 |
public = models.BooleanField(default=False)
|
114 |
|
115 |
class Meta: |
116 |
verbose_name = u'Image'
|
117 |
|
118 |
def __unicode__(self): |
119 |
return u'%s' % ( self.name, ) |
120 |
|
121 |
|
122 |
class ImageMetadata(models.Model): |
123 |
meta_key = models.CharField('Image metadata key name', max_length=50) |
124 |
meta_value = models.CharField('Image metadata value', max_length=500) |
125 |
image = models.ForeignKey(Image) |
126 |
|
127 |
class Meta: |
128 |
verbose_name = u'Key-value pair of Image metadata.'
|
129 |
|
130 |
def __unicode__(self): |
131 |
return u'%s, %s for %s' % (self.meta_key, self.meta_value, self.image.name) |
132 |
|
133 |
|
134 |
class Limit(models.Model): |
135 |
LIMITS = ( |
136 |
('QUOTA_CREDIT', 'Maximum amount of credits per user'), |
137 |
('MIN_CREDITS', 'Minimum amount of credits per user'), |
138 |
('MONTHLY_RATE', 'Monthly credit issue rate') |
139 |
) |
140 |
user = models.ForeignKey(SynnefoUser) |
141 |
name = models.CharField('Limit key name', choices=LIMITS, max_length=30, null=False) |
142 |
value = models.IntegerField('Limit current value')
|
143 |
|
144 |
class Meta: |
145 |
verbose_name = u'Enforced limit for user'
|
146 |
|
147 |
def __unicode__(self): |
148 |
return u'Limit %s for user %s: %d' % (self.value, self.user, self.value) |
149 |
|
150 |
|
151 |
class Flavor(models.Model): |
152 |
cpu = models.IntegerField('Number of CPUs', default=0) |
153 |
ram = models.IntegerField('Size of RAM', default=0) # Size in MiB |
154 |
disk = models.IntegerField('Size of Disk space', default=0) # Size in GiB |
155 |
|
156 |
class Meta: |
157 |
verbose_name = u'Virtual machine flavor'
|
158 |
unique_together = ("cpu","ram","disk") |
159 |
|
160 |
def _get_name(self): |
161 |
"""Returns flavor name (generated)"""
|
162 |
return u'C%dR%dD%d' % (self.cpu, self.ram, self.disk) |
163 |
|
164 |
def _current_cost(self, active): |
165 |
"""Returns active/inactive cost value
|
166 |
|
167 |
set active = True to get active cost and False for the inactive.
|
168 |
|
169 |
"""
|
170 |
fch_list = FlavorCost.objects.filter(flavor=self).order_by('-effective_from') |
171 |
if len(fch_list) > 0: |
172 |
if active:
|
173 |
return fch_list[0].cost_active |
174 |
else:
|
175 |
return fch_list[0].cost_inactive |
176 |
|
177 |
return 0 |
178 |
|
179 |
def _current_cost_active(self): |
180 |
"""Returns current active cost (property method)"""
|
181 |
return self._current_cost(True) |
182 |
|
183 |
def _current_cost_inactive(self): |
184 |
"""Returns current inactive cost (property method)"""
|
185 |
return self._current_cost(False) |
186 |
|
187 |
name = property(_get_name)
|
188 |
current_cost_active = property(_current_cost_active)
|
189 |
current_cost_inactive = property(_current_cost_inactive)
|
190 |
|
191 |
def __unicode__(self): |
192 |
return self.name |
193 |
|
194 |
|
195 |
class FlavorCost(models.Model): |
196 |
cost_active = models.PositiveIntegerField('Active Cost')
|
197 |
cost_inactive = models.PositiveIntegerField('Inactive Cost')
|
198 |
effective_from = models.DateTimeField() |
199 |
flavor = models.ForeignKey(Flavor) |
200 |
|
201 |
class Meta: |
202 |
verbose_name = u'Pricing history for flavors'
|
203 |
|
204 |
def __unicode__(self): |
205 |
return u'Costs (up, down)=(%d, %d) for %s since %s' % \ |
206 |
(int(self.cost_active), int(self.cost_inactive), |
207 |
self.flavor.name, self.effective_from) |
208 |
|
209 |
|
210 |
class VirtualMachine(models.Model): |
211 |
# The list of possible actions for a VM
|
212 |
ACTIONS = ( |
213 |
('CREATE', 'Create VM'), |
214 |
('START', 'Start VM'), |
215 |
('STOP', 'Shutdown VM'), |
216 |
('SUSPEND', 'Admin Suspend VM'), |
217 |
('REBOOT', 'Reboot VM'), |
218 |
('DESTROY', 'Destroy VM') |
219 |
) |
220 |
# The internal operating state of a VM
|
221 |
OPER_STATES = ( |
222 |
('BUILD', 'Queued for creation'), |
223 |
('ERROR', 'Creation failed'), |
224 |
('STOPPED', 'Stopped'), |
225 |
('STARTED', 'Started'), |
226 |
('DESTROYED', 'Destroyed') |
227 |
) |
228 |
# The list of possible operations on the backend
|
229 |
BACKEND_OPCODES = ( |
230 |
('OP_INSTANCE_CREATE', 'Create Instance'), |
231 |
('OP_INSTANCE_REMOVE', 'Remove Instance'), |
232 |
('OP_INSTANCE_STARTUP', 'Startup Instance'), |
233 |
('OP_INSTANCE_SHUTDOWN', 'Shutdown Instance'), |
234 |
('OP_INSTANCE_REBOOT', 'Reboot Instance'), |
235 |
|
236 |
# These are listed here for completeness,
|
237 |
# and are ignored for the time being
|
238 |
('OP_INSTANCE_SET_PARAMS', 'Set Instance Parameters'), |
239 |
('OP_INSTANCE_QUERY_DATA', 'Query Instance Data'), |
240 |
) |
241 |
# A backend job may be in one of the following possible states
|
242 |
BACKEND_STATUSES = ( |
243 |
('queued', 'request queued'), |
244 |
('waiting', 'request waiting for locks'), |
245 |
('canceling', 'request being canceled'), |
246 |
('running', 'request running'), |
247 |
('canceled', 'request canceled'), |
248 |
('success', 'request completed successfully'), |
249 |
('error', 'request returned error') |
250 |
) |
251 |
|
252 |
# The operating state of a VM,
|
253 |
# upon the successful completion of a backend operation.
|
254 |
OPER_STATE_FROM_OPCODE = { |
255 |
'OP_INSTANCE_CREATE': 'STARTED', |
256 |
'OP_INSTANCE_REMOVE': 'DESTROYED', |
257 |
'OP_INSTANCE_STARTUP': 'STARTED', |
258 |
'OP_INSTANCE_SHUTDOWN': 'STOPPED', |
259 |
'OP_INSTANCE_REBOOT': 'STARTED', |
260 |
'OP_INSTANCE_SET_PARAMS': None, |
261 |
'OP_INSTANCE_QUERY_DATA': None |
262 |
} |
263 |
|
264 |
# This dictionary contains the correspondence between
|
265 |
# internal operating states and Server States as defined
|
266 |
# by the Rackspace API.
|
267 |
RSAPI_STATE_FROM_OPER_STATE = { |
268 |
"BUILD": "BUILD", |
269 |
"ERROR": "ERROR", |
270 |
"STOPPED": "STOPPED", |
271 |
"STARTED": "ACTIVE", |
272 |
"DESTROYED": "DELETED" |
273 |
} |
274 |
|
275 |
name = models.CharField('Virtual Machine Name', max_length=255) |
276 |
owner = models.ForeignKey(SynnefoUser) |
277 |
created = models.DateTimeField(auto_now_add=True)
|
278 |
updated = models.DateTimeField(auto_now=True)
|
279 |
charged = models.DateTimeField(default=datetime.datetime.now()) |
280 |
sourceimage = models.ForeignKey("Image", null=False) |
281 |
hostid = models.CharField(max_length=100)
|
282 |
flavor = models.ForeignKey(Flavor) |
283 |
deleted = models.BooleanField('Deleted', default=False) |
284 |
suspended = models.BooleanField('Administratively Suspended', default=False) |
285 |
|
286 |
# VM State
|
287 |
# The following fields are volatile data, in the sense
|
288 |
# that they need not be persistent in the DB, but rather
|
289 |
# get generated at runtime by quering Ganeti and applying
|
290 |
# updates received from Ganeti.
|
291 |
|
292 |
# In the future they could be moved to a separate caching layer
|
293 |
# and removed from the database.
|
294 |
# [vkoukis] after discussion with [faidon].
|
295 |
action = models.CharField(choices=ACTIONS, max_length=30, null=True) |
296 |
operstate = models.CharField(choices=OPER_STATES, max_length=30, null=True) |
297 |
backendjobid = models.PositiveIntegerField(null=True)
|
298 |
backendopcode = models.CharField(choices=BACKEND_OPCODES, max_length=30,
|
299 |
null=True)
|
300 |
backendjobstatus = models.CharField(choices=BACKEND_STATUSES, max_length=30,
|
301 |
null=True)
|
302 |
backendlogmsg = models.TextField(null=True)
|
303 |
|
304 |
# Error classes
|
305 |
class InvalidBackendIdError(Exception): |
306 |
def __init__(self, value): |
307 |
self.value = value
|
308 |
def __str__(self): |
309 |
return repr(self.value) |
310 |
|
311 |
class InvalidBackendMsgError(Exception): |
312 |
def __init__(self, opcode, status): |
313 |
self.opcode = opcode
|
314 |
self.status = status
|
315 |
def __str__(self): |
316 |
return repr("<opcode: %s, status: %s>" % (str(self.opcode), |
317 |
str(self.status))) |
318 |
|
319 |
class InvalidActionError(Exception): |
320 |
def __init__(self, action): |
321 |
self._action = action
|
322 |
def __str__(self): |
323 |
return repr(str(self._action)) |
324 |
|
325 |
class DeletedError(Exception): |
326 |
pass
|
327 |
|
328 |
class BuildingError(Exception): |
329 |
pass
|
330 |
|
331 |
def __init__(self, *args, **kw): |
332 |
"""Initialize state for just created VM instances."""
|
333 |
super(VirtualMachine, self).__init__(*args, **kw) |
334 |
# This gets called BEFORE an instance gets save()d for
|
335 |
# the first time.
|
336 |
if not self.pk: |
337 |
self.action = None |
338 |
self.backendjobid = None |
339 |
self.backendjobstatus = None |
340 |
self.backendopcode = None |
341 |
self.backendlogmsg = None |
342 |
self.operstate = 'BUILD' |
343 |
|
344 |
def _get_backend_id(self): |
345 |
"""Returns the backend id for this VM by prepending backend-prefix."""
|
346 |
if not self.id: |
347 |
raise VirtualMachine.InvalidBackendIdError("self.id is None") |
348 |
return '%s%s' % (settings.BACKEND_PREFIX_ID, str(self.id)) |
349 |
|
350 |
backend_id = property(_get_backend_id)
|
351 |
|
352 |
class Meta: |
353 |
verbose_name = u'Virtual machine instance'
|
354 |
get_latest_by = 'created'
|
355 |
|
356 |
def __unicode__(self): |
357 |
return self.name |
358 |
|
359 |
|
360 |
class VirtualMachineGroup(models.Model): |
361 |
"""Groups of VMs for SynnefoUsers"""
|
362 |
name = models.CharField(max_length=255)
|
363 |
created = models.DateTimeField('Time of creation', auto_now_add=True) |
364 |
updated = models.DateTimeField('Time of last update', auto_now=True) |
365 |
owner = models.ForeignKey(SynnefoUser) |
366 |
machines = models.ManyToManyField(VirtualMachine) |
367 |
|
368 |
class Meta: |
369 |
verbose_name = u'Virtual Machine Group'
|
370 |
verbose_name_plural = 'Virtual Machine Groups'
|
371 |
ordering = ['name']
|
372 |
|
373 |
def __unicode__(self): |
374 |
return self.name |
375 |
|
376 |
|
377 |
class VirtualMachineMetadata(models.Model): |
378 |
meta_key = models.CharField(max_length=50)
|
379 |
meta_value = models.CharField(max_length=500)
|
380 |
vm = models.ForeignKey(VirtualMachine) |
381 |
|
382 |
class Meta: |
383 |
verbose_name = u'Key-value pair of metadata for a VM.'
|
384 |
|
385 |
def __unicode__(self): |
386 |
return u'%s, %s for %s' % (self.meta_key, self.meta_value, self.vm.name) |
387 |
|
388 |
|
389 |
class Debit(models.Model): |
390 |
when = models.DateTimeField() |
391 |
user = models.ForeignKey(SynnefoUser) |
392 |
vm = models.ForeignKey(VirtualMachine) |
393 |
description = models.TextField() |
394 |
|
395 |
class Meta: |
396 |
verbose_name = u'Accounting log'
|
397 |
|
398 |
def __unicode__(self): |
399 |
return u'%s - %s - %s - %s' % (self.user.id, self.vm.name, |
400 |
str(self.when), self.description) |
401 |
|
402 |
|
403 |
class Disk(models.Model): |
404 |
name = models.CharField(max_length=255)
|
405 |
created = models.DateTimeField('Time of creation', auto_now_add=True) |
406 |
updated = models.DateTimeField('Time of last update', auto_now=True) |
407 |
size = models.PositiveIntegerField('Disk size in GBs')
|
408 |
vm = models.ForeignKey(VirtualMachine, blank=True, null=True) |
409 |
owner = models.ForeignKey(SynnefoUser, blank=True, null=True) |
410 |
|
411 |
class Meta: |
412 |
verbose_name = u'Disk instance'
|
413 |
|
414 |
def __unicode__(self): |
415 |
return self.name |
416 |
|
417 |
|
418 |
class Network(models.Model): |
419 |
NETWORK_STATES = ( |
420 |
('ACTIVE', 'Active'), |
421 |
('DELETED', 'Deleted') |
422 |
) |
423 |
|
424 |
name = models.CharField(max_length=255)
|
425 |
created = models.DateTimeField(auto_now_add=True)
|
426 |
updated = models.DateTimeField(auto_now=True)
|
427 |
owner = models.ForeignKey(SynnefoUser, null=True)
|
428 |
state = models.CharField(choices=NETWORK_STATES, max_length=30)
|
429 |
public = models.BooleanField(default=False)
|
430 |
link = models.ForeignKey('NetworkLink', related_name='+') |
431 |
machines = models.ManyToManyField(VirtualMachine, |
432 |
through='NetworkInterface')
|
433 |
|
434 |
def __unicode__(self): |
435 |
return self.name |
436 |
|
437 |
|
438 |
class Invitations(models.Model): |
439 |
source = models.ForeignKey(SynnefoUser, related_name="source")
|
440 |
target = models.ForeignKey(SynnefoUser, related_name="target")
|
441 |
accepted = models.BooleanField('Is the invitation accepted?', default=False) |
442 |
created = models.DateTimeField(auto_now_add=True)
|
443 |
updated = models.DateTimeField(auto_now=True)
|
444 |
|
445 |
class Meta: |
446 |
verbose_name = u'Invitation'
|
447 |
|
448 |
def __unicode__(self): |
449 |
return self.name |
450 |
|
451 |
|
452 |
class NetworkInterface(models.Model): |
453 |
FIREWALL_PROFILES = ( |
454 |
('ENABLED', 'Enabled'), |
455 |
('DISABLED', 'Disabled'), |
456 |
('PROTECTED', 'Protected') |
457 |
) |
458 |
|
459 |
machine = models.ForeignKey(VirtualMachine, related_name='nics')
|
460 |
network = models.ForeignKey(Network, related_name='nics')
|
461 |
created = models.DateTimeField(auto_now_add=True)
|
462 |
updated = models.DateTimeField(auto_now=True)
|
463 |
index = models.IntegerField(null=True)
|
464 |
mac = models.CharField(max_length=17, null=True) |
465 |
ipv4 = models.CharField(max_length=15, null=True) |
466 |
ipv6 = models.CharField(max_length=100, null=True) |
467 |
firewall_profile = models.CharField(choices=FIREWALL_PROFILES, |
468 |
max_length=30, null=True) |
469 |
|
470 |
def __unicode__(self): |
471 |
return '%s@%s' % (self.machine.name, self.network.name) |
472 |
|
473 |
|
474 |
class NetworkLink(models.Model): |
475 |
network = models.ForeignKey(Network, null=True, related_name='+') |
476 |
index = models.IntegerField() |
477 |
name = models.CharField(max_length=255)
|
478 |
available = models.BooleanField(default=True)
|
479 |
|
480 |
def __unicode__(self): |
481 |
return self.name |