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# org.onap.dcae
# ================================================================================
# Copyright (c) 2017 AT&T Intellectual Property. All rights reserved.
# ================================================================================
# 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
#
# http://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.
# ============LICENSE_END=========================================================
#
# ECOMP is a trademark and service mark of AT&T Intellectual Property.
import collections
import logging, sys
import six
#####
# Module contains utility methods
#####
def update_json(src, key, value):
"""Updates a nested JSON value
This method does a recursive lookup for a value given a compound key and then
replaces that value with the passed in new value.
For example, given a src json { "a": [ { "aa": 1 }, "foo" ], "b": "2 } and a
key ("a", 0, "aa"), the value parameter would replace 1.
:param src: json to update
:type src: dict or list
:param key: compound key used to lookup
:type key: tuple
:param value: new value used to replace
:type value: object
:return: updated json
"""
if key:
src[key[0]] = update_json(src[key[0]], key[1:], value)
else:
# We've found the value we want to replace regardless of whether or not
# the object we are replacing is another copmlicated data structure.
src = value
return src
def _has_handlers(logger):
"""Check if logger has handlers"""
if six.PY3:
return logger.hasHandlers()
else:
# TODO: Not sure how to check if a handler has already been attached
# WATCH: Downside is lines get printed multiple times
return False
def get_logger(name, level=logging.INFO):
"""Get a logger with sensible defaults
This method returns a logger from logging by name that has been set with sensible
defaults if the logger hasn't already been setup with any handlers. The
default handler is a stream handler to stdout.
"""
logger = logging.getLogger(name)
if not _has_handlers(logger):
# No handlers attached which means logging hasn't been setup. Set
# "sensible" defaults which means stdout, INFO
logger.setLevel(level)
logger.addHandler(logging.StreamHandler(stream=sys.stdout))
return logger
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