3fc70be8b2
Add the main code logical, and the related project architecture. Change-Id: I3709a650c1aadc2ef809cf489145e87c55e24216
98 lines
2.9 KiB
Python
98 lines
2.9 KiB
Python
# Copyright 2020 Inspur
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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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"""Implementation of SQLAlchemy backend."""
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import sqlalchemy
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import threading
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import time
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from oslo_config import cfg
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from oslo_db import options
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from oslo_db.sqlalchemy import session as db_session
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from oslo_log import log as logging
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import osprofiler.sqlalchemy
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from venus.modules.custom_config.backends import models
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CONF = cfg.CONF
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CONF.import_group("profiler", "venus.service")
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log = logging.getLogger(__name__)
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options.set_defaults(CONF, connection='sqlite:///$state_path/venus.sqlite')
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_LOCK = threading.Lock()
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_FACADE = None
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def _create_facade_lazily():
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global _LOCK
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with _LOCK:
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global _FACADE
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if _FACADE is None:
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_FACADE = db_session.EngineFacade(
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CONF.database.connection,
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**dict(CONF.database)
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)
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if CONF.profiler.profiler_enabled:
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if CONF.profiler.trace_sqlalchemy:
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osprofiler.sqlalchemy.add_tracing(sqlalchemy,
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_FACADE.get_engine(),
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"db")
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return _FACADE
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def get_session(**kwargs):
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facade = _create_facade_lazily()
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return facade.get_session(**kwargs)
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class CustomConfigSql(object):
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def get_config(self, id):
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session = get_session()
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with session.begin():
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config = session.query(models.CustomConfig).filter_by(
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id=id).first()
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if config is None:
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return None
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else:
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return config.value
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def set_config(self, id, value):
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session = get_session()
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with session.begin():
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config = session.query(models.CustomConfig).filter_by(
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id=id).first()
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if config is None:
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s_instance = models.CustomConfig(
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id=id,
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value=value,
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update_time=time.strftime('%Y-%m-%d %H:%M:%S',
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time.localtime(time.time())))
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session.add(s_instance)
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else:
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config.value = value
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config.update_time = time.strftime('%Y-%m-%d %H:%M:%S',
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time.localtime(time.time()))
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