root / db / models.py @ f533f224
History | View | Annotate | Download (15.3 kB)
1 |
# vim: ts=4 sts=4 et ai sw=4 fileencoding=utf-8
|
---|---|
2 |
|
3 |
from django.conf import settings |
4 |
from django.db import models |
5 |
|
6 |
import datetime |
7 |
|
8 |
class SynnefoUser(models.Model): |
9 |
|
10 |
#TODO: Amend this when we have groups
|
11 |
ACCOUNT_TYPE = ( |
12 |
('STUDENT', 'Student'), |
13 |
('PROFESSOR', 'Professor'), |
14 |
('USER', 'Generic User') |
15 |
) |
16 |
|
17 |
name = models.CharField('Synnefo Username', max_length=255, default='') |
18 |
realname = models.CharField('Real Name', max_length=255, default='') |
19 |
uniq = models.CharField('External Unique ID', max_length=255,null=True) |
20 |
credit = models.IntegerField('Credit Balance')
|
21 |
auth_token = models.CharField('Authentication Token', max_length=32, null=True) |
22 |
auth_token_created = models.DateTimeField('Time of auth token creation', auto_now_add=True, null = True) |
23 |
auth_token_expires = models.DateTimeField('Time of auth token expiration', auto_now_add=True, null = True) |
24 |
type = models.CharField('Current Image State', choices=ACCOUNT_TYPE, max_length=30) |
25 |
created = models.DateTimeField('Time of creation', auto_now_add=True) |
26 |
updated = models.DateTimeField('Time of last update', auto_now=True) |
27 |
|
28 |
class Meta: |
29 |
verbose_name = u'Synnefo User'
|
30 |
|
31 |
def __unicode__(self): |
32 |
return self.name |
33 |
|
34 |
def get_limit(self, limit_name): |
35 |
"""Returns the limit value for the specified limit"""
|
36 |
limit_objs = Limit.objects.filter(name=limit_name, user=self)
|
37 |
if len(limit_objs) == 1: |
38 |
return limit_objs[0].value |
39 |
|
40 |
return 0 |
41 |
|
42 |
def _get_credit_quota(self): |
43 |
"""Internal getter function for credit quota"""
|
44 |
return self.get_limit('QUOTA_CREDIT') |
45 |
|
46 |
credit_quota = property(_get_credit_quota)
|
47 |
|
48 |
def _get_monthly_rate(self): |
49 |
"""Internal getter function for monthly credit issue rate"""
|
50 |
return self.get_limit('MONTHLY_RATE') |
51 |
|
52 |
monthly_rate = property(_get_monthly_rate)
|
53 |
|
54 |
def _get_min_credits(self): |
55 |
"""Internal getter function for maximum number of violations"""
|
56 |
return self.get_limit('MIN_CREDITS') |
57 |
|
58 |
min_credits = property(_get_min_credits)
|
59 |
|
60 |
|
61 |
class Image(models.Model): |
62 |
# This is WIP, FIXME
|
63 |
IMAGE_STATES = ( |
64 |
('ACTIVE', 'Active'), |
65 |
('SAVING', 'Saving'), |
66 |
('DELETED', 'Deleted') |
67 |
) |
68 |
|
69 |
# The list of supported Image formats
|
70 |
FORMATS = ( |
71 |
('dump', 'ext2 dump'), |
72 |
('lvm', 'lvm snapshot') |
73 |
) |
74 |
|
75 |
name = models.CharField('Image name', max_length=255) |
76 |
state = models.CharField('Current Image State', choices=IMAGE_STATES, max_length=30) |
77 |
owner = models.ForeignKey(SynnefoUser, blank=True, null=True) |
78 |
created = models.DateTimeField('Time of creation', auto_now_add=True) |
79 |
updated = models.DateTimeField('Time of last update', auto_now=True) |
80 |
sourcevm = models.ForeignKey("VirtualMachine", null=True) |
81 |
backend_id = models.CharField(max_length=50, default='debian_base') |
82 |
format = models.CharField(choices=FORMATS, max_length=30, default='dump') |
83 |
|
84 |
class Meta: |
85 |
verbose_name = u'Image'
|
86 |
|
87 |
def __unicode__(self): |
88 |
return u'%s' % ( self.name, ) |
89 |
|
90 |
|
91 |
class ImageMetadata(models.Model): |
92 |
meta_key = models.CharField('Image metadata key name', max_length=50) |
93 |
meta_value = models.CharField('Image metadata value', max_length=500) |
94 |
image = models.ForeignKey(Image) |
95 |
|
96 |
class Meta: |
97 |
verbose_name = u'Key-value pair of Image metadata.'
|
98 |
|
99 |
def __unicode__(self): |
100 |
return u'%s, %s for %s' % (self.meta_key, self.meta_value, self.image.name) |
101 |
|
102 |
|
103 |
class Limit(models.Model): |
104 |
LIMITS = ( |
105 |
('QUOTA_CREDIT', 'Maximum amount of credits per user'), |
106 |
('MIN_CREDITS', 'Minimum amount of credits per user'), |
107 |
('MONTHLY_RATE', 'Monthly credit issue rate') |
108 |
) |
109 |
user = models.ForeignKey(SynnefoUser) |
110 |
name = models.CharField('Limit key name', choices=LIMITS, max_length=30, null=False) |
111 |
value = models.IntegerField('Limit current value')
|
112 |
|
113 |
class Meta: |
114 |
verbose_name = u'Enforced limit for user'
|
115 |
|
116 |
def __unicode__(self): |
117 |
return u'Limit %s for user %s: %d' % (self.value, self.user, self.value) |
118 |
|
119 |
|
120 |
class Flavor(models.Model): |
121 |
cpu = models.IntegerField('Number of CPUs', default=0) |
122 |
ram = models.IntegerField('Size of RAM', default=0) # Size in MiB |
123 |
disk = models.IntegerField('Size of Disk space', default=0) # Size in GiB |
124 |
|
125 |
class Meta: |
126 |
verbose_name = u'Virtual machine flavor'
|
127 |
unique_together = ("cpu","ram","disk") |
128 |
|
129 |
def _get_name(self): |
130 |
"""Returns flavor name (generated)"""
|
131 |
return u'C%dR%dD%d' % (self.cpu, self.ram, self.disk) |
132 |
|
133 |
def _current_cost(self, active): |
134 |
"""Returns active/inactive cost value
|
135 |
|
136 |
set active = True to get active cost and False for the inactive.
|
137 |
|
138 |
"""
|
139 |
fch_list = FlavorCost.objects.filter(flavor=self).order_by('-effective_from') |
140 |
if len(fch_list) > 0: |
141 |
if active:
|
142 |
return fch_list[0].cost_active |
143 |
else:
|
144 |
return fch_list[0].cost_inactive |
145 |
|
146 |
return 0 |
147 |
|
148 |
def _current_cost_active(self): |
149 |
"""Returns current active cost (property method)"""
|
150 |
return self._current_cost(True) |
151 |
|
152 |
def _current_cost_inactive(self): |
153 |
"""Returns current inactive cost (property method)"""
|
154 |
return self._current_cost(False) |
155 |
|
156 |
name = property(_get_name)
|
157 |
current_cost_active = property(_current_cost_active)
|
158 |
current_cost_inactive = property(_current_cost_inactive)
|
159 |
|
160 |
def __unicode__(self): |
161 |
return self.name |
162 |
|
163 |
|
164 |
class FlavorCost(models.Model): |
165 |
cost_active = models.PositiveIntegerField('Active Cost')
|
166 |
cost_inactive = models.PositiveIntegerField('Inactive Cost')
|
167 |
effective_from = models.DateTimeField() |
168 |
flavor = models.ForeignKey(Flavor) |
169 |
|
170 |
class Meta: |
171 |
verbose_name = u'Pricing history for flavors'
|
172 |
|
173 |
def __unicode__(self): |
174 |
return u'Costs (up, down)=(%d, %d) for %s since %s' % \ |
175 |
(int(self.cost_active), int(self.cost_inactive), |
176 |
self.flavor.name, self.effective_from) |
177 |
|
178 |
|
179 |
class VirtualMachine(models.Model): |
180 |
# The list of possible actions for a VM
|
181 |
ACTIONS = ( |
182 |
('CREATE', 'Create VM'), |
183 |
('START', 'Start VM'), |
184 |
('STOP', 'Shutdown VM'), |
185 |
('SUSPEND', 'Admin Suspend VM'), |
186 |
('REBOOT', 'Reboot VM'), |
187 |
('DESTROY', 'Destroy VM') |
188 |
) |
189 |
# The internal operating state of a VM
|
190 |
OPER_STATES = ( |
191 |
('BUILD', 'Queued for creation'), |
192 |
('ERROR', 'Creation failed'), |
193 |
('STOPPED', 'Stopped'), |
194 |
('STARTED', 'Started'), |
195 |
('DESTROYED', 'Destroyed') |
196 |
) |
197 |
# The list of possible operations on the backend
|
198 |
BACKEND_OPCODES = ( |
199 |
('OP_INSTANCE_CREATE', 'Create Instance'), |
200 |
('OP_INSTANCE_REMOVE', 'Remove Instance'), |
201 |
('OP_INSTANCE_STARTUP', 'Startup Instance'), |
202 |
('OP_INSTANCE_SHUTDOWN', 'Shutdown Instance'), |
203 |
('OP_INSTANCE_REBOOT', 'Reboot Instance'), |
204 |
|
205 |
# These are listed here for completeness,
|
206 |
# and are ignored for the time being
|
207 |
('OP_INSTANCE_SET_PARAMS', 'Set Instance Parameters'), |
208 |
('OP_INSTANCE_QUERY_DATA', 'Query Instance Data'), |
209 |
) |
210 |
# A backend job may be in one of the following possible states
|
211 |
BACKEND_STATUSES = ( |
212 |
('queued', 'request queued'), |
213 |
('waiting', 'request waiting for locks'), |
214 |
('canceling', 'request being canceled'), |
215 |
('running', 'request running'), |
216 |
('canceled', 'request canceled'), |
217 |
('success', 'request completed successfully'), |
218 |
('error', 'request returned error') |
219 |
) |
220 |
|
221 |
# The operating state of a VM,
|
222 |
# upon the successful completion of a backend operation.
|
223 |
OPER_STATE_FROM_OPCODE = { |
224 |
'OP_INSTANCE_CREATE': 'STARTED', |
225 |
'OP_INSTANCE_REMOVE': 'DESTROYED', |
226 |
'OP_INSTANCE_STARTUP': 'STARTED', |
227 |
'OP_INSTANCE_SHUTDOWN': 'STOPPED', |
228 |
'OP_INSTANCE_REBOOT': 'STARTED', |
229 |
'OP_INSTANCE_SET_PARAMS': None, |
230 |
'OP_INSTANCE_QUERY_DATA': None |
231 |
} |
232 |
|
233 |
# This dictionary contains the correspondence between
|
234 |
# internal operating states and Server States as defined
|
235 |
# by the Rackspace API.
|
236 |
RSAPI_STATE_FROM_OPER_STATE = { |
237 |
"BUILD": "BUILD", |
238 |
"ERROR": "ERROR", |
239 |
"STOPPED": "STOPPED", |
240 |
"STARTED": "ACTIVE", |
241 |
"DESTROYED": "DELETED" |
242 |
} |
243 |
|
244 |
name = models.CharField('Virtual Machine Name', max_length=255) |
245 |
owner = models.ForeignKey(SynnefoUser) |
246 |
created = models.DateTimeField(auto_now_add=True)
|
247 |
updated = models.DateTimeField(auto_now=True)
|
248 |
charged = models.DateTimeField(default=datetime.datetime.now()) |
249 |
sourceimage = models.ForeignKey("Image", null=False) |
250 |
hostid = models.CharField(max_length=100)
|
251 |
flavor = models.ForeignKey(Flavor) |
252 |
deleted = models.BooleanField('Deleted', default=False) |
253 |
suspended = models.BooleanField('Administratively Suspended', default=False) |
254 |
|
255 |
# VM State
|
256 |
# The following fields are volatile data, in the sense
|
257 |
# that they need not be persistent in the DB, but rather
|
258 |
# get generated at runtime by quering Ganeti and applying
|
259 |
# updates received from Ganeti.
|
260 |
|
261 |
# In the future they could be moved to a separate caching layer
|
262 |
# and removed from the database.
|
263 |
# [vkoukis] after discussion with [faidon].
|
264 |
action = models.CharField(choices=ACTIONS, max_length=30, null=True) |
265 |
operstate = models.CharField(choices=OPER_STATES, max_length=30, null=True) |
266 |
backendjobid = models.PositiveIntegerField(null=True)
|
267 |
backendopcode = models.CharField(choices=BACKEND_OPCODES, max_length=30,
|
268 |
null=True)
|
269 |
backendjobstatus = models.CharField(choices=BACKEND_STATUSES, max_length=30,
|
270 |
null=True)
|
271 |
backendlogmsg = models.TextField(null=True)
|
272 |
|
273 |
# Error classes
|
274 |
class InvalidBackendIdError(Exception): |
275 |
def __init__(self, value): |
276 |
self.value = value
|
277 |
def __str__(self): |
278 |
return repr(self.value) |
279 |
|
280 |
class InvalidBackendMsgError(Exception): |
281 |
def __init__(self, opcode, status): |
282 |
self.opcode = opcode
|
283 |
self.status = status
|
284 |
def __str__(self): |
285 |
return repr("<opcode: %s, status: %s>" % (str(self.opcode), |
286 |
str(self.status))) |
287 |
|
288 |
class InvalidActionError(Exception): |
289 |
def __init__(self, action): |
290 |
self._action = action
|
291 |
def __str__(self): |
292 |
return repr(str(self._action)) |
293 |
|
294 |
class DeletedError(Exception): |
295 |
pass
|
296 |
|
297 |
class BuildingError(Exception): |
298 |
pass
|
299 |
|
300 |
def __init__(self, *args, **kw): |
301 |
"""Initialize state for just created VM instances."""
|
302 |
super(VirtualMachine, self).__init__(*args, **kw) |
303 |
# This gets called BEFORE an instance gets save()d for
|
304 |
# the first time.
|
305 |
if not self.pk: |
306 |
self.action = None |
307 |
self.backendjobid = None |
308 |
self.backendjobstatus = None |
309 |
self.backendopcode = None |
310 |
self.backendlogmsg = None |
311 |
self.operstate = 'BUILD' |
312 |
|
313 |
def _get_backend_id(self): |
314 |
"""Returns the backend id for this VM by prepending backend-prefix."""
|
315 |
if not self.id: |
316 |
raise VirtualMachine.InvalidBackendIdError("self.id is None") |
317 |
return '%s%s' % (settings.BACKEND_PREFIX_ID, str(self.id)) |
318 |
|
319 |
backend_id = property(_get_backend_id)
|
320 |
|
321 |
class Meta: |
322 |
verbose_name = u'Virtual machine instance'
|
323 |
get_latest_by = 'created'
|
324 |
|
325 |
def __unicode__(self): |
326 |
return self.name |
327 |
|
328 |
|
329 |
class VirtualMachineGroup(models.Model): |
330 |
"""Groups of VMs for SynnefoUsers"""
|
331 |
name = models.CharField(max_length=255)
|
332 |
created = models.DateTimeField('Time of creation', auto_now_add=True) |
333 |
updated = models.DateTimeField('Time of last update', auto_now=True) |
334 |
owner = models.ForeignKey(SynnefoUser) |
335 |
machines = models.ManyToManyField(VirtualMachine) |
336 |
|
337 |
class Meta: |
338 |
verbose_name = u'Virtual Machine Group'
|
339 |
verbose_name_plural = 'Virtual Machine Groups'
|
340 |
ordering = ['name']
|
341 |
|
342 |
def __unicode__(self): |
343 |
return self.name |
344 |
|
345 |
|
346 |
class VirtualMachineMetadata(models.Model): |
347 |
meta_key = models.CharField(max_length=50)
|
348 |
meta_value = models.CharField(max_length=500)
|
349 |
vm = models.ForeignKey(VirtualMachine) |
350 |
|
351 |
class Meta: |
352 |
verbose_name = u'Key-value pair of metadata for a VM.'
|
353 |
|
354 |
def __unicode__(self): |
355 |
return u'%s, %s for %s' % (self.meta_key, self.meta_value, self.vm.name) |
356 |
|
357 |
|
358 |
class Debit(models.Model): |
359 |
when = models.DateTimeField() |
360 |
user = models.ForeignKey(SynnefoUser) |
361 |
vm = models.ForeignKey(VirtualMachine) |
362 |
description = models.TextField() |
363 |
|
364 |
class Meta: |
365 |
verbose_name = u'Accounting log'
|
366 |
|
367 |
def __unicode__(self): |
368 |
return u'%s - %s - %s - %s' % (self.user.id, self.vm.name, |
369 |
str(self.when), self.description) |
370 |
|
371 |
|
372 |
class Disk(models.Model): |
373 |
name = models.CharField(max_length=255)
|
374 |
created = models.DateTimeField('Time of creation', auto_now_add=True) |
375 |
updated = models.DateTimeField('Time of last update', auto_now=True) |
376 |
size = models.PositiveIntegerField('Disk size in GBs')
|
377 |
vm = models.ForeignKey(VirtualMachine, blank=True, null=True) |
378 |
owner = models.ForeignKey(SynnefoUser, blank=True, null=True) |
379 |
|
380 |
class Meta: |
381 |
verbose_name = u'Disk instance'
|
382 |
|
383 |
def __unicode__(self): |
384 |
return self.name |
385 |
|
386 |
|
387 |
class Network(models.Model): |
388 |
NETWORK_STATES = ( |
389 |
('ACTIVE', 'Active'), |
390 |
('DELETED', 'Deleted') |
391 |
) |
392 |
|
393 |
name = models.CharField(max_length=255)
|
394 |
created = models.DateTimeField(auto_now_add=True)
|
395 |
updated = models.DateTimeField(auto_now=True)
|
396 |
owner = models.ForeignKey(SynnefoUser, null=True)
|
397 |
state = models.CharField(choices=NETWORK_STATES, max_length=30)
|
398 |
public = models.BooleanField(default=False)
|
399 |
link = models.ForeignKey('NetworkLink', related_name='+') |
400 |
machines = models.ManyToManyField(VirtualMachine, |
401 |
through='NetworkInterface')
|
402 |
|
403 |
def __unicode__(self): |
404 |
return self.name |
405 |
|
406 |
|
407 |
class Invitations(models.Model): |
408 |
source = models.ForeignKey(SynnefoUser, related_name="source")
|
409 |
target = models.ForeignKey(SynnefoUser, related_name="target")
|
410 |
accepted = models.BooleanField('Is the invitation accepted?', default=False) |
411 |
created = models.DateTimeField(auto_now_add=True)
|
412 |
updated = models.DateTimeField(auto_now=True)
|
413 |
|
414 |
class Meta: |
415 |
verbose_name = u'Invitation'
|
416 |
|
417 |
def __unicode__(self): |
418 |
return self.name |
419 |
|
420 |
|
421 |
class NetworkInterface(models.Model): |
422 |
FIREWALL_PROFILES = ( |
423 |
('ENABLED', 'Enabled'), |
424 |
('DISABLED', 'Disabled') |
425 |
) |
426 |
|
427 |
machine = models.ForeignKey(VirtualMachine, related_name='nics')
|
428 |
network = models.ForeignKey(Network, related_name='nics')
|
429 |
created = models.DateTimeField(auto_now_add=True)
|
430 |
updated = models.DateTimeField(auto_now=True)
|
431 |
index = models.IntegerField(null=True)
|
432 |
mac = models.CharField(max_length=17, null=True) |
433 |
ipv4 = models.CharField(max_length=15, null=True) |
434 |
ipv6 = models.CharField(max_length=100, null=True) |
435 |
firewall_profile = models.CharField(choices=FIREWALL_PROFILES, |
436 |
max_length=30, null=True) |
437 |
|
438 |
|
439 |
class NetworkLink(models.Model): |
440 |
network = models.ForeignKey(Network, null=True, related_name='+') |
441 |
index = models.IntegerField() |
442 |
name = models.CharField(max_length=255)
|
443 |
available = models.BooleanField(default=True)
|