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# Copyright (c) 2019 Cisco and/or its affiliates.
# 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.
"""Python library for customizing robot.api.logger
As robot.api.logger is a module, it is not easy to copy, edit or inherit from.
This module offers a class to wrap it.
The main point of the class is to lower verbosity of Robot logging,
especially when injected to third party code (such as vpp_papi.VPPApiClient).
Also, String formatting using '%' operator is supported.
Logger.console() is not supported.
"""
import logging
_LEVELS = {
"TRACE": logging.DEBUG // 2,
"DEBUG": logging.DEBUG,
"INFO": logging.INFO,
"HTML": logging.INFO,
"WARN": logging.WARN,
"ERROR": logging.ERROR,
"CRITICAL": logging.CRITICAL,
"NONE": logging.CRITICAL,
}
class FilteredLogger(object):
"""Instances of this class have the similar API to robot.api.logger.
TODO: Support html argument?
TODO: Support console with a filtering switch?
"""
def __init__(self, logger_module, min_level="INFO"):
"""Remember the values, check min_level is known.
Use min_level of "CRITICAL" or "NONE" to disable logging entirely.
:param logger_module: robot.api.logger, or a compatible object.
:param min_level: Minimal level to log, lower levels are ignored.
:type logger_module: Object with .write(msg, level="INFO") signature.
:type min_level: str
:raises KeyError: If given min_level is not supported.
"""
self.logger_module = logger_module
self.min_level_num = _LEVELS[min_level.upper()]
def write(self, message, farg=None, level="INFO"):
"""Forwards the message to logger if min_level is reached.
Formatting using '%' operator is used when farg argument is suplied.
:param message: Message to log.
:param farg: Value for '%' operator, or None.
:param level: Level to possibly log with.
:type message: str
:type farg: NoneTye, or whatever '%' accepts: str, int, float, dict...
:type level: str
"""
if _LEVELS[level.upper()] >= self.min_level_num:
if farg is not None:
message = message % farg
self.logger_module.write(message, level=level)
def trace(self, message, farg=None):
"""Forward the message using the ``TRACE`` level."""
self.write(message, farg=farg, level="TRACE")
def debug(self, message, farg=None):
"""Forward the message using the ``DEBUG`` level."""
self.write(message, farg=farg, level="DEBUG")
def info(self, message, farg=None):
"""Forward the message using the ``INFO`` level."""
self.write(message, farg=farg, level="INFO")
def warn(self, message, farg=None):
"""Forward the message using the ``WARN`` level."""
self.write(message, farg=farg, level="WARN")
def error(self, message, farg=None):
"""Forward the message using the ``ERROR`` level."""
self.write(message, farg=farg, level="ERROR")
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