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###############################################################################
# Copyright (c) 2017 Koren Lev (Cisco Systems), Yaron Yogev (Cisco Systems) #
# and others #
# #
# All rights reserved. This program and the accompanying materials #
# are made available under the terms of the Apache License, Version 2.0 #
# which accompanies this distribution, and is available at #
# http://www.apache.org/licenses/LICENSE-2.0 #
###############################################################################
import datetime
import logging
from messages.message import Message
from utils.inventory_mgr import InventoryMgr
from utils.logging.logger import Logger
from utils.string_utils import stringify_datetime
class MongoLoggingHandler(logging.Handler):
"""
Logging handler for MongoDB
"""
SOURCE_SYSTEM = 'Calipso'
def __init__(self, env: str, level: str):
super().__init__(Logger.get_numeric_level(level))
self.str_level = level
self.env = env
self.inv = None
def emit(self, record):
# Try to invoke InventoryMgr for logging
if not self.inv:
try:
self.inv = InventoryMgr()
except:
return
# make sure we do not try to log to DB when DB is not ready
if not (self.inv.is_db_ready()
and 'messages' in self.inv.collections):
return
# make ID from current timestamp
now = datetime.datetime.utcnow()
d = now - datetime.datetime(1970, 1, 1)
ts = stringify_datetime(now)
timestamp_id = '{}.{}.{}'.format(d.days, d.seconds, d.microseconds)
source = self.SOURCE_SYSTEM
message = Message(msg_id=timestamp_id, env=self.env, source=source,
msg=Logger.formatter.format(record), ts=ts,
level=record.levelname)
self.inv.collections['messages'].insert_one(message.get())
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