diff options
Diffstat (limited to 'ick2/store.py')
-rw-r--r-- | ick2/store.py | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/ick2/store.py b/ick2/store.py deleted file mode 100644 index 2d93daf..0000000 --- a/ick2/store.py +++ /dev/null @@ -1,85 +0,0 @@ -# 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 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] - - -class Conflict(Exception): - - def __init__(self, rid, expected, got): - super().__init__( - 'Update conflict for {}: expected revision {}, got {}'.format( - rid, expected, got)) |