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# Copyright (C) 2019 Lars Wirzenius
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import copy
import uuid
import ick2
class StoreInterface: # pragma: no cover
def create(self, token, obj):
raise NotImplementedError()
def update(self, token, rid, obj, revision):
raise NotImplementedError()
def show(self, token, rid):
raise NotImplementedError()
def delete(self, token, rid):
raise NotImplementedError()
def search(self, token, cond):
raise NotImplementedError()
class MemoryStore(StoreInterface):
def __init__(self):
self._objs = {}
def search(self, token, cond):
return list(self._objs.keys())
def _new_id(self):
return str(uuid.uuid4())
def _set(self, rid, rev, obj):
self._objs[rid] = (rev, copy.deepcopy(obj))
def create(self, token, obj):
rid = self._new_id()
rev = self._new_id()
self._set(rid, rev, obj)
return rid, rev
def show(self, token, rid):
if rid not in self._objs:
raise ick2.NotFound('unknown.type', rid)
rev, obj = self._objs[rid]
return copy.deepcopy(obj), rev
def update(self, token, rid, obj, revision):
old_obj, old_rev = self.show(token, rid)
if old_rev != revision:
raise ick2.Conflict(rid, old_rev, revision)
new_rev = self._new_id()
self._set(rid, new_rev, obj)
return new_rev
def delete(self, token, rid):
del self._objs[rid]
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