root / snf-astakos-app / astakos / quotaholder / callpoint.py @ 2b888e60
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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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NoStockError, NoCapacityError, |
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DuplicateError) |
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|
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from astakos.quotaholder.commission import ( |
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Import, Export, Reclaim, Release, Operations) |
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|
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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 (Holding, |
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Commission, Provision, ProvisionLog, |
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now, |
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db_get_holding, |
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db_get_commission, db_filter_provision) |
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|
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|
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class QuotaholderDjangoDBCallpoint(object): |
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|
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def _init_holding(self, |
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holder, resource, capacity, |
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imported_min, imported_max, stock_min, stock_max, |
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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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|
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h.capacity = capacity |
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h.flags = flags |
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h.imported_min = imported_min |
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h.imported_max = imported_max |
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h.stock_min = stock_min |
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h.stock_max = stock_max |
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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, capacity, |
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imported_min, imported_max, stock_min, stock_max, |
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flags) = sfh |
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|
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self._init_holding(holder, resource, capacity,
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imported_min, imported_max, |
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stock_min, stock_max, |
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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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|
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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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|
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for idx, tpl in enumerate(reset_holding): |
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(holder, resource, |
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imported_min, imported_max, stock_min, stock_max) = tpl |
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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.imported_min = imported_min |
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h.imported_max = imported_max |
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h.stock_min = stock_min |
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h.stock_max = stock_max |
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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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|
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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 _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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|
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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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|
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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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|
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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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|
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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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|
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if h.imported_max > 0: |
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append(idx) |
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continue
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|
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h.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 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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|
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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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|
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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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|
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append([(holder, h.resource, |
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h.imported_min, h.imported_max, h.stock_min, h.stock_max) |
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for h in holdings]) |
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return holdings_list, rejected
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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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holders = set(holder for holder, r in get_quota) |
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hs = Holding.objects.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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append((h.holder, h.resource, h.capacity, |
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h.imported_min, h.imported_max, |
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h.stock_min, h.stock_max, |
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h.flags)) |
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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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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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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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for (holder, resource,
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capacity, |
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flags) in set_quota:
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try:
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h = holdings[(holder, resource)] |
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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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flags=flags) |
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h.capacity = capacity |
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h.save() |
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holdings[(holder, resource)] = h |
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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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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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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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for removing, source in [(True, sub_quota), (False, add_quota)]: |
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for (holder, resource,
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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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current_capacity = h.capacity |
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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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current_capacity = 0
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|
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h.capacity = (current_capacity - capacity if removing else |
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current_capacity + capacity) |
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|
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if h.capacity < 0: |
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append((holder, resource)) |
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continue
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|
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h.save() |
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holdings[(holder, resource)] = h |
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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 issue_commission(self, |
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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=()): |
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|
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create = Commission.objects.create |
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commission = create(holder=target, clientkey=clientkey, name=name) |
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serial = commission.serial |
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|
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operations = Operations() |
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|
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try:
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checked = [] |
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for holder, resource, quantity in provisions: |
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|
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if holder == target:
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m = ("Cannot issue commission from a holder "
|
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"to itself (%s)" % (holder,))
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raise InvalidDataError(m)
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|
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ent_res = holder, resource |
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if ent_res in checked: |
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m = "Duplicate provision for %s.%s" % ent_res
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raise DuplicateError(m)
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checked.append(ent_res) |
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|
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# Source
|
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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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m = ("%s has no stock of %s." % (holder, resource))
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raise NoStockError(m,
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holder=holder, |
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resource=resource, |
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requested=quantity, |
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current=0,
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limit=0)
|
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|
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# Target
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try:
|
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th = db_get_holding(holder=target, resource=resource, |
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for_update=True)
|
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except Holding.DoesNotExist:
|
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m = ("There is no capacity "
|
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"to allocate into in %s.%s" % (target, resource))
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raise NoCapacityError(m,
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holder=holder, |
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resource=resource, |
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requested=quantity, |
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current=0,
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limit=0)
|
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|
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if quantity >= 0: |
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operations.prepare(Export, h, quantity) |
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operations.prepare(Import, th, quantity) |
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|
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else: # release |
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abs_quantity = -quantity |
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|
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operations.prepare(Reclaim, h, abs_quantity) |
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operations.prepare(Release, th, abs_quantity) |
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|
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Provision.objects.create(serial=commission, |
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holder=holder, |
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resource=resource, |
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quantity=quantity) |
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|
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except QuotaholderError:
|
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operations.revert() |
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raise
|
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|
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return serial
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|
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def _log_provision(self, |
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commission, s_holding, t_holding, |
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provision, log_time, reason): |
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|
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s_holder = s_holding.holder |
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t_holder = t_holding.holder |
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|
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kwargs = { |
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'serial': commission.serial,
|
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'name': commission.name,
|
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'source': s_holder,
|
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'target': t_holder,
|
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'resource': provision.resource,
|
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'source_capacity': s_holding.capacity,
|
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'source_imported_min': s_holding.imported_min,
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'source_imported_max': s_holding.imported_max,
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'source_stock_min': s_holding.stock_min,
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'source_stock_max': s_holding.stock_max,
|
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'target_capacity': t_holding.capacity,
|
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'target_imported_min': t_holding.imported_min,
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'target_imported_max': t_holding.imported_max,
|
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'target_stock_min': t_holding.stock_min,
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'target_stock_max': t_holding.stock_max,
|
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'delta_quantity': provision.quantity,
|
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'issue_time': commission.issue_time,
|
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'log_time': log_time,
|
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'reason': reason,
|
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} |
383 |
|
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ProvisionLog.objects.create(**kwargs) |
385 |
|
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def accept_commission(self, |
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context=None, clientkey=None, |
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serials=[], reason=''):
|
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log_time = now() |
390 |
|
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for serial in serials: |
392 |
try:
|
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c = db_get_commission(clientkey=clientkey, serial=serial, |
394 |
for_update=True)
|
395 |
except Commission.DoesNotExist:
|
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return
|
397 |
|
398 |
t = c.holder |
399 |
|
400 |
operations = Operations() |
401 |
|
402 |
provisions = db_filter_provision(serial=serial, for_update=True)
|
403 |
for pv in provisions: |
404 |
try:
|
405 |
h = db_get_holding(holder=pv.holder, |
406 |
resource=pv.resource, for_update=True)
|
407 |
th = db_get_holding(holder=t, resource=pv.resource, |
408 |
for_update=True)
|
409 |
except Holding.DoesNotExist:
|
410 |
m = "Corrupted provision"
|
411 |
raise CorruptedError(m)
|
412 |
|
413 |
quantity = pv.quantity |
414 |
|
415 |
if quantity >= 0: |
416 |
operations.finalize(Export, h, quantity) |
417 |
operations.finalize(Import, th, quantity) |
418 |
else: # release |
419 |
abs_quantity = -quantity |
420 |
|
421 |
operations.finalize(Reclaim, h, abs_quantity) |
422 |
operations.finalize(Release, th, abs_quantity) |
423 |
|
424 |
reason = 'ACCEPT:' + reason[-121:] |
425 |
self._log_provision(c, h, th, pv, log_time, reason)
|
426 |
pv.delete() |
427 |
c.delete() |
428 |
|
429 |
return
|
430 |
|
431 |
def reject_commission(self, |
432 |
context=None, clientkey=None, |
433 |
serials=[], reason=''):
|
434 |
log_time = now() |
435 |
|
436 |
for serial in serials: |
437 |
try:
|
438 |
c = db_get_commission(clientkey=clientkey, serial=serial, |
439 |
for_update=True)
|
440 |
except Commission.DoesNotExist:
|
441 |
return
|
442 |
|
443 |
t = c.holder |
444 |
|
445 |
operations = Operations() |
446 |
|
447 |
provisions = db_filter_provision(serial=serial, for_update=True)
|
448 |
for pv in provisions: |
449 |
try:
|
450 |
h = db_get_holding(holder=pv.holder, |
451 |
resource=pv.resource, for_update=True)
|
452 |
th = db_get_holding(holder=t, resource=pv.resource, |
453 |
for_update=True)
|
454 |
except Holding.DoesNotExist:
|
455 |
m = "Corrupted provision"
|
456 |
raise CorruptedError(m)
|
457 |
|
458 |
quantity = pv.quantity |
459 |
|
460 |
if quantity >= 0: |
461 |
operations.undo(Export, h, quantity) |
462 |
operations.undo(Import, th, quantity) |
463 |
else: # release |
464 |
abs_quantity = -quantity |
465 |
|
466 |
operations.undo(Reclaim, h, abs_quantity) |
467 |
operations.undo(Release, th, abs_quantity) |
468 |
|
469 |
reason = 'REJECT:' + reason[-121:] |
470 |
self._log_provision(c, h, th, pv, log_time, reason)
|
471 |
pv.delete() |
472 |
c.delete() |
473 |
|
474 |
return
|
475 |
|
476 |
def get_pending_commissions(self, context=None, clientkey=None): |
477 |
pending = Commission.objects.filter(clientkey=clientkey) |
478 |
pending_list = pending.values_list('serial', flat=True) |
479 |
return pending_list
|
480 |
|
481 |
def resolve_pending_commissions(self, |
482 |
context=None, clientkey=None, |
483 |
max_serial=None, accept_set=[]):
|
484 |
accept_set = set(accept_set)
|
485 |
pending = self.get_pending_commissions(context=context,
|
486 |
clientkey=clientkey) |
487 |
pending = sorted(pending)
|
488 |
|
489 |
accept = self.accept_commission
|
490 |
reject = self.reject_commission
|
491 |
|
492 |
for serial in pending: |
493 |
if serial > max_serial:
|
494 |
break
|
495 |
|
496 |
if serial in accept_set: |
497 |
accept(context=context, clientkey=clientkey, serials=[serial]) |
498 |
else:
|
499 |
reject(context=context, clientkey=clientkey, serials=[serial]) |
500 |
|
501 |
return
|
502 |
|
503 |
def get_timeline(self, context=None, after="", before="Z", get_timeline=[]): |
504 |
holder_set = set()
|
505 |
e_add = holder_set.add |
506 |
resource_set = set()
|
507 |
r_add = resource_set.add |
508 |
|
509 |
for holder, resource in get_timeline: |
510 |
if holder not in holder_set: |
511 |
e_add(holder) |
512 |
|
513 |
r_add((holder, resource)) |
514 |
|
515 |
chunk_size = 65536
|
516 |
nr = 0
|
517 |
timeline = [] |
518 |
append = timeline.append |
519 |
filterlogs = ProvisionLog.objects.filter |
520 |
if holder_set:
|
521 |
q_holder = Q(source__in=holder_set) | Q(target__in=holder_set) |
522 |
else:
|
523 |
q_holder = Q() |
524 |
|
525 |
while 1: |
526 |
logs = filterlogs(q_holder, |
527 |
issue_time__gt=after, |
528 |
issue_time__lte=before, |
529 |
reason__startswith='ACCEPT:')
|
530 |
|
531 |
logs = logs.order_by('issue_time')
|
532 |
#logs = logs.values()
|
533 |
logs = logs[:chunk_size] |
534 |
nr += len(logs)
|
535 |
if not logs: |
536 |
break
|
537 |
for g in logs: |
538 |
if ((g.source, g.resource) not in resource_set |
539 |
or (g.target, g.resource) not in resource_set): |
540 |
continue
|
541 |
|
542 |
o = { |
543 |
'serial': g.serial,
|
544 |
'source': g.source,
|
545 |
'target': g.target,
|
546 |
'resource': g.resource,
|
547 |
'name': g.name,
|
548 |
'quantity': g.delta_quantity,
|
549 |
'source_allocated': g.source_allocated(),
|
550 |
'source_allocated_through': g.source_allocated_through(),
|
551 |
'source_inbound': g.source_inbound(),
|
552 |
'source_inbound_through': g.source_inbound_through(),
|
553 |
'source_outbound': g.source_outbound(),
|
554 |
'source_outbound_through': g.source_outbound_through(),
|
555 |
'target_allocated': g.target_allocated(),
|
556 |
'target_allocated_through': g.target_allocated_through(),
|
557 |
'target_inbound': g.target_inbound(),
|
558 |
'target_inbound_through': g.target_inbound_through(),
|
559 |
'target_outbound': g.target_outbound(),
|
560 |
'target_outbound_through': g.target_outbound_through(),
|
561 |
'issue_time': g.issue_time,
|
562 |
'log_time': g.log_time,
|
563 |
'reason': g.reason,
|
564 |
} |
565 |
|
566 |
append(o) |
567 |
|
568 |
after = g.issue_time |
569 |
if after >= before:
|
570 |
break
|
571 |
|
572 |
return timeline
|
573 |
|
574 |
|
575 |
API_Callpoint = QuotaholderDjangoDBCallpoint |