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65 lines
2.3 KiB
Python
Executable File
65 lines
2.3 KiB
Python
Executable File
# Copyright (C) 2009-2017 Wander Lairson Costa
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# Copyright (C) 2017-2018 Robert Wlodarczyk
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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__author__ = 'Wander Lairson Costa'
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__all__ = ['methodtrace', 'functiontrace']
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import logging
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import usb._interop as _interop
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_enable_tracing = False
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def enable_tracing(enable):
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global _enable_tracing
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_enable_tracing = enable
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def _trace_function_call(logger, fname, *args, **named_args):
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logger.debug(
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# TODO: check if 'f' is a method or a free function
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fname + '(' + \
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', '.join((str(val) for val in args)) + \
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', '.join((name + '=' + str(val) for name, val in named_args.items())) + ')'
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)
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# decorator for methods calls tracing
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def methodtrace(logger):
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def decorator_logging(f):
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if not _enable_tracing:
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return f
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def do_trace(*args, **named_args):
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# this if is just a optimization to avoid unecessary string formatting
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if logging.DEBUG >= logger.getEffectiveLevel():
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fn = type(args[0]).__name__ + '.' + f.__name__
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_trace_function_call(logger, fn, *args[1:], **named_args)
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return f(*args, **named_args)
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_interop._update_wrapper(do_trace, f)
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return do_trace
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return decorator_logging
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# decorator for methods calls tracing
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def functiontrace(logger):
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def decorator_logging(f):
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if not _enable_tracing:
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return f
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def do_trace(*args, **named_args):
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# this if is just a optimization to avoid unecessary string formatting
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if logging.DEBUG >= logger.getEffectiveLevel():
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_trace_function_call(logger, f.__name__, *args, **named_args)
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return f(*args, **named_args)
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_interop._update_wrapper(do_trace, f)
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return do_trace
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return decorator_logging
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