Source code for spinn_front_end_common.interface.provenance.log_store_db
# Copyright (c) 2017 The University of Manchester
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from datetime import datetime
import sqlite3
from typing import List, Optional, Tuple
from spinn_utilities.log_store import LogStore
from spinn_utilities.overrides import overrides
from .global_provenance import GlobalProvenance
class LogStoreDB(LogStore):
"""
Log message storage mechanism that uses a database.
"""
__slots__ = ()
[docs]
@overrides(LogStore.store_log)
def store_log(
self, level: int, message: str,
timestamp: Optional[datetime] = None):
try:
with GlobalProvenance() as db:
db.store_log(level, message, timestamp)
except sqlite3.OperationalError as ex:
if "database is locked" in ex.args:
# OK ignore this one
# DO NOT log this error here or you will loop forever!
return
# all others are bad
raise
[docs]
@overrides(LogStore.retreive_log_messages)
def retreive_log_messages(
self, min_level: int = 0) -> List[Tuple[int, str]]:
with GlobalProvenance() as db:
return db.retreive_log_messages(min_level)
[docs]
@overrides(LogStore.get_location)
def get_location(self) -> str:
return GlobalProvenance.get_global_provenace_path()