root / snf-astakos-app / astakos / quotaholder / callpoint.py @ 3adbfafa
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# Copyright 2012, 2013 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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# 1. Redistributions of source code must retain the above
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# copyright notice, this list of conditions and the following
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# disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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from astakos.quotaholder.exception import ( |
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QuotaholderError, |
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CorruptedError, InvalidDataError, |
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NoQuantityError, NoCapacityError, |
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DuplicateError) |
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from astakos.quotaholder.utils.newname import newname |
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from astakos.quotaholder.api import QH_PRACTICALLY_INFINITE |
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|
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from django.db.models import Q, Count |
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from django.db.models import Q |
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from .models import (Policy, Holding, |
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Commission, Provision, ProvisionLog, |
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now, |
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db_get_holding, db_get_policy, |
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db_get_commission, db_filter_provision) |
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|
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class QuotaholderDjangoDBCallpoint(object): |
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|
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def get_limits(self, context=None, get_limits=()): |
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limits = [] |
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append = limits.append |
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|
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for policy in get_limits: |
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try:
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p = Policy.objects.get(policy=policy) |
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except Policy.DoesNotExist:
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continue
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|
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append((policy, p.quantity, p.capacity)) |
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|
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return limits
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|
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def set_limits(self, context=None, set_limits=()): |
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|
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for (policy, quantity, capacity) in set_limits: |
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|
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try:
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policy = db_get_policy(policy=policy, for_update=True)
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except Policy.DoesNotExist:
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Policy.objects.create(policy=policy, |
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quantity=quantity, |
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capacity=capacity, |
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) |
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else:
|
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policy.quantity = quantity |
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policy.capacity = capacity |
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policy.save() |
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|
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return ()
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|
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def get_holding(self, context=None, get_holding=()): |
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holdings = [] |
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append = holdings.append |
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|
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for holder, resource in get_holding: |
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try:
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h = Holding.objects.get(holder=holder, resource=resource) |
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except Holding.DoesNotExist:
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continue
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append((h.holder, h.resource, h.policy.policy, |
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h.imported, h.exported, |
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h.returned, h.released, h.flags)) |
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|
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return holdings
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|
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def set_holding(self, context=None, set_holding=()): |
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rejected = [] |
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append = rejected.append |
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|
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for holder, resource, policy, flags in set_holding: |
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try:
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p = Policy.objects.get(policy=policy) |
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except Policy.DoesNotExist:
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append((holder, resource, policy)) |
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continue
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|
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try:
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h = db_get_holding(holder=holder, resource=resource, |
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for_update=True)
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h.policy = p |
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h.flags = flags |
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h.save() |
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except Holding.DoesNotExist:
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h = Holding.objects.create(holder=holder, resource=resource, |
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policy=p, flags=flags) |
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|
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if rejected:
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raise QuotaholderError(rejected)
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return rejected
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|
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def _init_holding(self, |
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holder, resource, policy, |
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imported, exported, returned, released, |
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flags): |
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try:
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h = db_get_holding(holder=holder, resource=resource, |
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for_update=True)
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except Holding.DoesNotExist:
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h = Holding(holder=holder, resource=resource) |
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h.policy = policy |
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h.flags = flags |
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h.imported = imported |
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h.importing = imported |
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h.exported = exported |
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h.exporting = exported |
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h.returned = returned |
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h.returning = returned |
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h.released = released |
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h.releasing = released |
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h.save() |
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|
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def init_holding(self, context=None, init_holding=()): |
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rejected = [] |
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append = rejected.append |
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|
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for idx, sfh in enumerate(init_holding): |
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(holder, resource, policy, |
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imported, exported, returned, released, |
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flags) = sfh |
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|
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try:
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p = Policy.objects.get(policy=policy) |
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except Policy.DoesNotExist:
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append(idx) |
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continue
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self._init_holding(holder, resource, p,
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imported, exported, |
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returned, released, |
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flags) |
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if rejected:
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raise QuotaholderError(rejected)
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return rejected
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def reset_holding(self, context=None, reset_holding=()): |
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rejected = [] |
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append = rejected.append |
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for idx, tpl in enumerate(reset_holding): |
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(holder, resource, |
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imported, exported, returned, released) = tpl |
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try:
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h = db_get_holding(holder=holder, resource=resource, |
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for_update=True)
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h.imported = imported |
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h.importing = imported |
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h.exported = exported |
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h.exporting = exported |
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h.returned = returned |
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h.returning = returned |
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h.released = released |
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h.releasing = released |
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h.save() |
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except Holding.DoesNotExist:
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append(idx) |
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continue
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if rejected:
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raise QuotaholderError(rejected)
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return rejected
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def _check_pending(self, holder, resource): |
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cs = Commission.objects.filter(holder=holder) |
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cs = [c for c in cs if c.provisions.filter(resource=resource)] |
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as_target = [c.serial for c in cs] |
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ps = Provision.objects.filter(holder=holder, resource=resource) |
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as_source = [p.serial.serial for p in ps] |
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return as_target + as_source
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def _actual_quantity(self, holding): |
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hp = holding.policy |
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return hp.quantity + (holding.imported + holding.returned -
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holding.exported - holding.released) |
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def release_holding(self, context=None, release_holding=()): |
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rejected = [] |
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append = rejected.append |
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for idx, (holder, resource) in enumerate(release_holding): |
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try:
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h = db_get_holding(holder=holder, resource=resource, |
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for_update=True)
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except Holding.DoesNotExist:
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append(idx) |
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continue
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if self._check_pending(holder, resource): |
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append(idx) |
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continue
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q = self._actual_quantity(h)
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if q > 0: |
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append(idx) |
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continue
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h.delete() |
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if rejected:
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raise QuotaholderError(rejected)
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return rejected
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def list_resources(self, context=None, holder=None): |
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holdings = Holding.objects.filter(holder=holder) |
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resources = [h.resource for h in holdings] |
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return resources
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def list_holdings(self, context=None, list_holdings=()): |
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rejected = [] |
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reject = rejected.append |
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holdings_list = [] |
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append = holdings_list.append |
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for holder in list_holdings: |
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holdings = list(Holding.objects.filter(holder=holder))
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if not holdings: |
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reject(holder) |
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continue
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append([(holder, h.resource, |
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h.imported, h.exported, h.returned, h.released) |
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for h in holdings]) |
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|
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return holdings_list, rejected
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|
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def get_quota(self, context=None, get_quota=()): |
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quotas = [] |
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append = quotas.append |
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|
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holders = set(holder for holder, r in get_quota) |
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hs = Holding.objects.select_related().filter(holder__in=holders) |
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holdings = {} |
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for h in hs: |
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holdings[(h.holder, h.resource)] = h |
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for holder, resource in get_quota: |
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try:
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h = holdings[(holder, resource)] |
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except:
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continue
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p = h.policy |
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|
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append((h.holder, h.resource, p.quantity, p.capacity, |
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h.imported, h.exported, |
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h.returned, h.released, |
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h.flags)) |
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|
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return quotas
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|
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def set_quota(self, context=None, set_quota=()): |
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rejected = [] |
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append = rejected.append |
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|
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q_holdings = Q() |
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holders = [] |
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for (holder, resource, _, _, _) in set_quota: |
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holders.append(holder) |
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|
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hs = Holding.objects.filter(holder__in=holders).select_for_update() |
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holdings = {} |
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for h in hs: |
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holdings[(h.holder, h.resource)] = h |
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|
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old_policies = [] |
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|
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for (holder, resource,
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quantity, capacity, |
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flags) in set_quota:
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|
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policy = newname('policy_')
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newp = Policy(policy=policy, |
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quantity=quantity, |
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capacity=capacity, |
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) |
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|
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try:
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h = holdings[(holder, resource)] |
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old_policies.append(h.policy_id) |
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h.policy = newp |
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h.flags = flags |
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except KeyError: |
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h = Holding(holder=holder, resource=resource, |
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policy=newp, flags=flags) |
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|
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# the order is intentionally reversed so that it
|
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# would break if we are not within a transaction.
|
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# Has helped before.
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h.save() |
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newp.save() |
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holdings[(holder, resource)] = h |
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|
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objs = Policy.objects.annotate(refs=Count('holding'))
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objs.filter(policy__in=old_policies, refs=0).delete()
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|
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if rejected:
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raise QuotaholderError(rejected)
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return rejected
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|
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def add_quota(self, |
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context=None,
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sub_quota=(), add_quota=()): |
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rejected = [] |
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append = rejected.append |
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|
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sources = sub_quota + add_quota |
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q_holdings = Q() |
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holders = [] |
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for (holder, resource, _, _) in sources: |
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holders.append(holder) |
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|
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hs = Holding.objects.filter(holder__in=holders).select_for_update() |
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holdings = {} |
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for h in hs: |
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holdings[(h.holder, h.resource)] = h |
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|
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pids = [h.policy_id for h in hs] |
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policies = Policy.objects.in_bulk(pids) |
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|
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old_policies = [] |
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|
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for removing, source in [(True, sub_quota), (False, add_quota)]: |
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for (holder, resource,
|
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quantity, capacity, |
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) in source:
|
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|
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try:
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h = holdings[(holder, resource)] |
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old_policies.append(h.policy_id) |
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try:
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p = policies[h.policy_id] |
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except KeyError: |
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raise AssertionError("no policy %s" % h.policy_id) |
373 |
except KeyError: |
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if removing:
|
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append((holder, resource)) |
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continue
|
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|
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h = Holding(holder=holder, resource=resource, flags=0)
|
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p = None
|
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|
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policy = newname('policy_')
|
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newp = Policy(policy=policy) |
383 |
|
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newp.quantity = _add(p.quantity if p else 0, quantity, |
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invert=removing) |
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newp.capacity = _add(p.capacity if p else 0, capacity, |
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invert=removing) |
388 |
|
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if _isneg(newp.capacity):
|
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append((holder, resource)) |
391 |
continue
|
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|
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h.policy = newp |
394 |
|
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# the order is intentionally reversed so that it
|
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# would break if we are not within a transaction.
|
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# Has helped before.
|
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h.save() |
399 |
newp.save() |
400 |
policies[policy] = newp |
401 |
holdings[(holder, resource)] = h |
402 |
|
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objs = Policy.objects.annotate(refs=Count('holding'))
|
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objs.filter(policy__in=old_policies, refs=0).delete()
|
405 |
|
406 |
if rejected:
|
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raise QuotaholderError(rejected)
|
408 |
|
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return rejected
|
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|
411 |
def issue_commission(self, |
412 |
context=None,
|
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clientkey=None,
|
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target=None,
|
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name=None,
|
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provisions=()): |
417 |
|
418 |
create = Commission.objects.create |
419 |
commission = create(holder=target, clientkey=clientkey, name=name) |
420 |
serial = commission.serial |
421 |
|
422 |
checked = [] |
423 |
for holder, resource, quantity in provisions: |
424 |
|
425 |
if holder == target:
|
426 |
m = "Cannot issue commission from an holder to itself (%s)" % (
|
427 |
holder,) |
428 |
raise InvalidDataError(m)
|
429 |
|
430 |
ent_res = holder, resource |
431 |
if ent_res in checked: |
432 |
m = "Duplicate provision for %s.%s" % ent_res
|
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raise DuplicateError(m)
|
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checked.append(ent_res) |
435 |
|
436 |
release = 0
|
437 |
if quantity < 0: |
438 |
release = 1
|
439 |
|
440 |
# Source limits checks
|
441 |
try:
|
442 |
h = db_get_holding(holder=holder, resource=resource, |
443 |
for_update=True)
|
444 |
except Holding.DoesNotExist:
|
445 |
m = ("There is no quantity "
|
446 |
"to allocate from in %s.%s" % (holder, resource))
|
447 |
raise NoQuantityError(m,
|
448 |
source=holder, target=target, |
449 |
resource=resource, requested=quantity, |
450 |
current=0, limit=0) |
451 |
|
452 |
hp = h.policy |
453 |
|
454 |
if not release: |
455 |
limit = hp.quantity + h.imported - h.releasing |
456 |
unavailable = h.exporting - h.returned |
457 |
available = limit - unavailable |
458 |
|
459 |
if quantity > available:
|
460 |
m = ("There is not enough quantity "
|
461 |
"to allocate from in %s.%s" % (holder, resource))
|
462 |
raise NoQuantityError(m,
|
463 |
source=holder, |
464 |
target=target, |
465 |
resource=resource, |
466 |
requested=quantity, |
467 |
current=unavailable, |
468 |
limit=limit) |
469 |
else:
|
470 |
current = (+ h.importing + h.returning |
471 |
- h.exported - h.returned) |
472 |
limit = hp.capacity |
473 |
if current - quantity > limit:
|
474 |
m = ("There is not enough capacity "
|
475 |
"to release to in %s.%s" % (holder, resource))
|
476 |
raise NoQuantityError(m,
|
477 |
source=holder, |
478 |
target=target, |
479 |
resource=resource, |
480 |
requested=quantity, |
481 |
current=current, |
482 |
limit=limit) |
483 |
|
484 |
# Target limits checks
|
485 |
try:
|
486 |
th = db_get_holding(holder=target, resource=resource, |
487 |
for_update=True)
|
488 |
except Holding.DoesNotExist:
|
489 |
m = ("There is no capacity "
|
490 |
"to allocate into in %s.%s" % (target, resource))
|
491 |
raise NoCapacityError(m,
|
492 |
source=holder, |
493 |
target=target, |
494 |
resource=resource, |
495 |
requested=quantity, |
496 |
current=0,
|
497 |
limit=0)
|
498 |
|
499 |
tp = th.policy |
500 |
|
501 |
if not release: |
502 |
limit = tp.quantity + tp.capacity |
503 |
current = (+ th.importing + th.returning + tp.quantity |
504 |
- th.exported - th.released) |
505 |
|
506 |
if current + quantity > limit:
|
507 |
m = ("There is not enough capacity "
|
508 |
"to allocate into in %s.%s" % (target, resource))
|
509 |
raise NoCapacityError(m,
|
510 |
source=holder, |
511 |
target=target, |
512 |
resource=resource, |
513 |
requested=quantity, |
514 |
current=current, |
515 |
limit=limit) |
516 |
else:
|
517 |
limit = tp.quantity + th.imported - th.releasing |
518 |
unavailable = th.exporting - th.returned |
519 |
available = limit - unavailable |
520 |
|
521 |
if available + quantity < 0: |
522 |
m = ("There is not enough quantity "
|
523 |
"to release from in %s.%s" % (target, resource))
|
524 |
raise NoCapacityError(m,
|
525 |
source=holder, |
526 |
target=target, |
527 |
resource=resource, |
528 |
requested=quantity, |
529 |
current=unavailable, |
530 |
limit=limit) |
531 |
|
532 |
Provision.objects.create(serial=commission, |
533 |
holder=holder, |
534 |
resource=resource, |
535 |
quantity=quantity) |
536 |
if release:
|
537 |
h.returning -= quantity |
538 |
th.releasing -= quantity |
539 |
else:
|
540 |
h.exporting += quantity |
541 |
th.importing += quantity |
542 |
|
543 |
h.save() |
544 |
th.save() |
545 |
|
546 |
return serial
|
547 |
|
548 |
def _log_provision(self, |
549 |
commission, s_holding, t_holding, |
550 |
provision, log_time, reason): |
551 |
|
552 |
s_holder = s_holding.holder |
553 |
s_policy = s_holding.policy |
554 |
t_holder = t_holding.holder |
555 |
t_policy = t_holding.policy |
556 |
|
557 |
kwargs = { |
558 |
'serial': commission.serial,
|
559 |
'name': commission.name,
|
560 |
'source': s_holder,
|
561 |
'target': t_holder,
|
562 |
'resource': provision.resource,
|
563 |
'source_quantity': s_policy.quantity,
|
564 |
'source_capacity': s_policy.capacity,
|
565 |
'source_imported': s_holding.imported,
|
566 |
'source_exported': s_holding.exported,
|
567 |
'source_returned': s_holding.returned,
|
568 |
'source_released': s_holding.released,
|
569 |
'target_quantity': t_policy.quantity,
|
570 |
'target_capacity': t_policy.capacity,
|
571 |
'target_imported': t_holding.imported,
|
572 |
'target_exported': t_holding.exported,
|
573 |
'target_returned': t_holding.returned,
|
574 |
'target_released': t_holding.released,
|
575 |
'delta_quantity': provision.quantity,
|
576 |
'issue_time': commission.issue_time,
|
577 |
'log_time': log_time,
|
578 |
'reason': reason,
|
579 |
} |
580 |
|
581 |
ProvisionLog.objects.create(**kwargs) |
582 |
|
583 |
def accept_commission(self, |
584 |
context=None, clientkey=None, |
585 |
serials=(), reason=''):
|
586 |
log_time = now() |
587 |
|
588 |
for serial in serials: |
589 |
try:
|
590 |
c = db_get_commission(clientkey=clientkey, serial=serial, |
591 |
for_update=True)
|
592 |
except Commission.DoesNotExist:
|
593 |
return
|
594 |
|
595 |
t = c.holder |
596 |
|
597 |
provisions = db_filter_provision(serial=serial, for_update=True)
|
598 |
for pv in provisions: |
599 |
try:
|
600 |
h = db_get_holding(holder=pv.holder, |
601 |
resource=pv.resource, for_update=True)
|
602 |
th = db_get_holding(holder=t, resource=pv.resource, |
603 |
for_update=True)
|
604 |
except Holding.DoesNotExist:
|
605 |
m = "Corrupted provision"
|
606 |
raise CorruptedError(m)
|
607 |
|
608 |
quantity = pv.quantity |
609 |
release = 0
|
610 |
if quantity < 0: |
611 |
release = 1
|
612 |
|
613 |
if release:
|
614 |
h.returned -= quantity |
615 |
th.released -= quantity |
616 |
else:
|
617 |
h.exported += quantity |
618 |
th.imported += quantity |
619 |
|
620 |
reason = 'ACCEPT:' + reason[-121:] |
621 |
self._log_provision(c, h, th, pv, log_time, reason)
|
622 |
h.save() |
623 |
th.save() |
624 |
pv.delete() |
625 |
c.delete() |
626 |
|
627 |
return
|
628 |
|
629 |
def reject_commission(self, |
630 |
context=None, clientkey=None, |
631 |
serials=(), reason=''):
|
632 |
log_time = now() |
633 |
|
634 |
for serial in serials: |
635 |
try:
|
636 |
c = db_get_commission(clientkey=clientkey, serial=serial, |
637 |
for_update=True)
|
638 |
except Commission.DoesNotExist:
|
639 |
return
|
640 |
|
641 |
t = c.holder |
642 |
|
643 |
provisions = db_filter_provision(serial=serial, for_update=True)
|
644 |
for pv in provisions: |
645 |
try:
|
646 |
h = db_get_holding(holder=pv.holder, |
647 |
resource=pv.resource, for_update=True)
|
648 |
th = db_get_holding(holder=t, resource=pv.resource, |
649 |
for_update=True)
|
650 |
except Holding.DoesNotExist:
|
651 |
m = "Corrupted provision"
|
652 |
raise CorruptedError(m)
|
653 |
|
654 |
quantity = pv.quantity |
655 |
release = 0
|
656 |
if quantity < 0: |
657 |
release = 1
|
658 |
|
659 |
if release:
|
660 |
h.returning += quantity |
661 |
th.releasing += quantity |
662 |
else:
|
663 |
h.exporting -= quantity |
664 |
th.importing -= quantity |
665 |
|
666 |
reason = 'REJECT:' + reason[-121:] |
667 |
self._log_provision(c, h, th, pv, log_time, reason)
|
668 |
h.save() |
669 |
th.save() |
670 |
pv.delete() |
671 |
c.delete() |
672 |
|
673 |
return
|
674 |
|
675 |
def get_pending_commissions(self, context=None, clientkey=None): |
676 |
pending = Commission.objects.filter(clientkey=clientkey) |
677 |
pending_list = pending.values_list('serial', flat=True) |
678 |
return pending_list
|
679 |
|
680 |
def resolve_pending_commissions(self, |
681 |
context=None, clientkey=None, |
682 |
max_serial=None, accept_set=()):
|
683 |
accept_set = set(accept_set)
|
684 |
pending = self.get_pending_commissions(context=context,
|
685 |
clientkey=clientkey) |
686 |
pending = sorted(pending)
|
687 |
|
688 |
accept = self.accept_commission
|
689 |
reject = self.reject_commission
|
690 |
|
691 |
for serial in pending: |
692 |
if serial > max_serial:
|
693 |
break
|
694 |
|
695 |
if serial in accept_set: |
696 |
accept(context=context, clientkey=clientkey, serials=[serial]) |
697 |
else:
|
698 |
reject(context=context, clientkey=clientkey, serials=[serial]) |
699 |
|
700 |
return
|
701 |
|
702 |
def get_timeline(self, context=None, after="", before="Z", get_timeline=()): |
703 |
holder_set = set()
|
704 |
e_add = holder_set.add |
705 |
resource_set = set()
|
706 |
r_add = resource_set.add |
707 |
|
708 |
for holder, resource in get_timeline: |
709 |
if holder not in holder_set: |
710 |
e_add(holder) |
711 |
|
712 |
r_add((holder, resource)) |
713 |
|
714 |
chunk_size = 65536
|
715 |
nr = 0
|
716 |
timeline = [] |
717 |
append = timeline.append |
718 |
filterlogs = ProvisionLog.objects.filter |
719 |
if holder_set:
|
720 |
q_holder = Q(source__in=holder_set) | Q(target__in=holder_set) |
721 |
else:
|
722 |
q_holder = Q() |
723 |
|
724 |
while 1: |
725 |
logs = filterlogs(q_holder, |
726 |
issue_time__gt=after, |
727 |
issue_time__lte=before, |
728 |
reason__startswith='ACCEPT:')
|
729 |
|
730 |
logs = logs.order_by('issue_time')
|
731 |
#logs = logs.values()
|
732 |
logs = logs[:chunk_size] |
733 |
nr += len(logs)
|
734 |
if not logs: |
735 |
break
|
736 |
for g in logs: |
737 |
if ((g.source, g.resource) not in resource_set |
738 |
or (g.target, g.resource) not in resource_set): |
739 |
continue
|
740 |
|
741 |
o = { |
742 |
'serial': g.serial,
|
743 |
'source': g.source,
|
744 |
'target': g.target,
|
745 |
'resource': g.resource,
|
746 |
'name': g.name,
|
747 |
'quantity': g.delta_quantity,
|
748 |
'source_allocated': g.source_allocated(),
|
749 |
'source_allocated_through': g.source_allocated_through(),
|
750 |
'source_inbound': g.source_inbound(),
|
751 |
'source_inbound_through': g.source_inbound_through(),
|
752 |
'source_outbound': g.source_outbound(),
|
753 |
'source_outbound_through': g.source_outbound_through(),
|
754 |
'target_allocated': g.target_allocated(),
|
755 |
'target_allocated_through': g.target_allocated_through(),
|
756 |
'target_inbound': g.target_inbound(),
|
757 |
'target_inbound_through': g.target_inbound_through(),
|
758 |
'target_outbound': g.target_outbound(),
|
759 |
'target_outbound_through': g.target_outbound_through(),
|
760 |
'issue_time': g.issue_time,
|
761 |
'log_time': g.log_time,
|
762 |
'reason': g.reason,
|
763 |
} |
764 |
|
765 |
append(o) |
766 |
|
767 |
after = g.issue_time |
768 |
if after >= before:
|
769 |
break
|
770 |
|
771 |
return timeline
|
772 |
|
773 |
|
774 |
def _add(x, y, invert=False): |
775 |
return x + y if not invert else x - y |
776 |
|
777 |
|
778 |
def _isneg(x): |
779 |
return x < 0 |
780 |
|
781 |
|
782 |
API_Callpoint = QuotaholderDjangoDBCallpoint |