231 lines
7.4 KiB
Python
231 lines
7.4 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014 Objectif Libre
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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# @author: Stéphane Albert
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#
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from oslo_db.sqlalchemy import utils
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import sqlalchemy
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from cloudkitty import config # NOQA
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from cloudkitty import db
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from cloudkitty.db import api
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from cloudkitty.db.sqlalchemy import migration
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from cloudkitty.db.sqlalchemy import models
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def get_backend():
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return DBAPIManager
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class State(api.State):
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def get_state(self, name):
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session = db.get_session()
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q = utils.model_query(
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models.StateInfo,
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session)
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q = q.filter(models.StateInfo.name == name)
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return q.value(models.StateInfo.state)
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def set_state(self, name, state):
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session = db.get_session()
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with session.begin():
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try:
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q = utils.model_query(
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models.StateInfo,
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session)
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q = q.filter(models.StateInfo.name == name)
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q = q.with_lockmode('update')
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db_state = q.one()
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db_state.state = state
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except sqlalchemy.orm.exc.NoResultFound:
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db_state = models.StateInfo(name=name,
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state=state)
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session.add(db_state)
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return db_state.state
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def get_metadata(self, name):
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session = db.get_session()
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q = utils.model_query(
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models.StateInfo,
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session)
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q.filter(models.StateInfo.name == name)
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return q.value(models.StateInfo.s_metadata)
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def set_metadata(self, name, metadata):
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session = db.get_session()
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with session.begin():
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try:
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q = utils.model_query(
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models.StateInfo,
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session)
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q = q.filter(models.StateInfo.name == name)
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q = q.with_lockmode('update')
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db_state = q.one()
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db_state.s_metadata = metadata
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except sqlalchemy.orm.exc.NoResultFound:
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db_state = models.StateInfo(name=name,
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s_metadata=metadata)
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session.add(db_state)
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class ModuleInfo(api.ModuleInfo):
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"""Base class for module info management."""
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def get_priority(self, name):
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session = db.get_session()
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q = utils.model_query(
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models.ModuleStateInfo,
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session)
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q = q.filter(models.ModuleStateInfo.name == name)
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res = q.value(models.ModuleStateInfo.priority)
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if res:
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return int(res)
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else:
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return 1
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def set_priority(self, name, priority):
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session = db.get_session()
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with session.begin():
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try:
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q = utils.model_query(
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models.ModuleStateInfo,
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session)
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q = q.filter(
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models.ModuleStateInfo.name == name)
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q = q.with_lockmode('update')
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db_state = q.one()
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db_state.priority = priority
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except sqlalchemy.orm.exc.NoResultFound:
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db_state = models.ModuleStateInfo(name=name,
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priority=priority)
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session.add(db_state)
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return int(db_state.priority)
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def get_state(self, name):
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session = db.get_session()
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try:
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q = utils.model_query(
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models.ModuleStateInfo,
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session)
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q = q.filter(models.ModuleStateInfo.name == name)
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res = q.value(models.ModuleStateInfo.state)
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return bool(res)
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except sqlalchemy.orm.exc.NoResultFound:
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return None
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def set_state(self, name, state):
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session = db.get_session()
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with session.begin():
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try:
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q = utils.model_query(
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models.ModuleStateInfo,
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session)
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q = q.filter(models.ModuleStateInfo.name == name)
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q = q.with_lockmode('update')
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db_state = q.one()
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db_state.state = state
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except sqlalchemy.orm.exc.NoResultFound:
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db_state = models.ModuleStateInfo(name=name, state=state)
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session.add(db_state)
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return bool(db_state.state)
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class ServiceToCollectorMapping(object):
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"""Base class for service to collector mapping."""
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def get_mapping(self, service):
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session = db.get_session()
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try:
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q = utils.model_query(
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models.ServiceToCollectorMapping,
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session)
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q = q.filter(
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models.ServiceToCollectorMapping.service == service)
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return q.one()
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except sqlalchemy.orm.exc.NoResultFound:
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raise api.NoSuchMapping(service)
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def set_mapping(self, service, collector):
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session = db.get_session()
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with session.begin():
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try:
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q = utils.model_query(
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models.ServiceToCollectorMapping,
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session)
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q = q.filter(
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models.ServiceToCollectorMapping.service == service)
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q = q.with_lockmode('update')
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db_mapping = q.one()
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db_mapping.collector = collector
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except sqlalchemy.orm.exc.NoResultFound:
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model = models.ServiceToCollectorMapping
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db_mapping = model(service=service,
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collector=collector)
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session.add(db_mapping)
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return db_mapping
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def list_services(self, collector=None):
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session = db.get_session()
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q = utils.model_query(
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models.ServiceToCollectorMapping,
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session)
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if collector:
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q = q.filter(
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models.ServiceToCollectorMapping.collector == collector)
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res = q.distinct().values(
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models.ServiceToCollectorMapping.service)
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return res
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def list_mappings(self, collector=None):
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session = db.get_session()
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q = utils.model_query(
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models.ServiceToCollectorMapping,
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session)
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if collector:
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q = q.filter(
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models.ServiceToCollectorMapping.collector == collector)
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res = q.all()
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return res
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def delete_mapping(self, service):
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session = db.get_session()
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q = utils.model_query(
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models.ServiceToCollectorMapping,
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session)
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q = q.filter(models.ServiceToCollectorMapping.service == service)
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r = q.delete()
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if not r:
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raise api.NoSuchMapping(service)
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class DBAPIManager(object):
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@staticmethod
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def get_state():
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return State()
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@staticmethod
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def get_module_info():
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return ModuleInfo()
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@staticmethod
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def get_service_to_collector_mapping():
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return ServiceToCollectorMapping()
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@staticmethod
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def get_migration():
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return migration
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