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trezor-firmware/trezorlib/log.py
matejcik 54f1599a5a regenerate license headers
This clarifies the intent: the project is licenced under terms
of LGPL version 3 only, but the standard headers cover only "3 or later",
so we had to rewrite them.

In the same step, we removed author information from individual files
in favor of "SatoshiLabs and contributors", and include an AUTHORS
file that lists the contributors.

Apologies to those whose names are missing; please contact us if you wish
to add your info to the AUTHORS file.
2018-06-21 16:49:13 +02:00

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1.7 KiB
Python

# This file is part of the Trezor project.
#
# Copyright (C) 2012-2018 SatoshiLabs and contributors
#
# This library is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3
# as published by the Free Software Foundation.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the License along with this library.
# If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.
import logging
from typing import Set, Type, Optional
from . import protobuf
OMITTED_MESSAGES = set() # type: Set[Type[protobuf.MessageType]]
class PrettyProtobufFormatter(logging.Formatter):
def format(self, record: logging.LogRecord) -> str:
time = self.formatTime(record)
message = '[{time}] {source} {level}: {msg}'.format(
time=time, level=record.levelname.upper(),
source=record.name,
msg=super().format(record))
if hasattr(record, 'protobuf'):
if type(record.protobuf) in OMITTED_MESSAGES:
message += " ({} bytes)".format(record.protobuf.ByteSize())
else:
message += "\n" + protobuf.format_message(record.protobuf)
return message
def enable_debug_output(handler: Optional[logging.Handler] = None):
if handler is None:
handler = logging.StreamHandler()
formatter = PrettyProtobufFormatter()
handler.setFormatter(formatter)
logger = logging.getLogger('trezorlib')
logger.setLevel(logging.DEBUG)
logger.addHandler(handler)