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"""
:mod:`lib` --- public functions
-------------------------------
"""
from django.utils.translation import ugettext as _
from modoboa.lib.exceptions import ModoboaException
class LimitReached(ModoboaException):
http_code = 403
def __init__(self, limit):
self.limit = limit
def __str__(self):
return _("%s: limit reached") % self.limit.label
class UnsufficientResource(ModoboaException):
http_code = 424
def __init__(self, limit):
self.limit = limit
def __str__(self):
return _("Not enough resources")
class BadLimitValue(ModoboaException):
http_code = 400
def allocate_resources_from_user(limit, user, value):
"""Allocate resource using an existing user.
When a reseller creates a domain administrator, he generally
assigns him resource to create new objetcs. As a reseller may
also be limited, the resource he gives is taken from its own
pool.
"""
ol = user.userobjectlimit_set.get(name=limit.name)
if value == -1 and ol.max_value != -1:
raise BadLimitValue(
_("You're not allowed to define unlimited values")
)
if limit.max_value > -1:
value -= limit.max_value
if value == 0:
return
remain = ol.max_value - ol.current_value
if value > remain:
raise UnsufficientResource(ol)
ol.max_value -= value
ol.save()