69 lines
1.9 KiB
Python
69 lines
1.9 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014 matrix.org
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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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from inspect import getcallargs
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from functools import wraps
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import logging
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def log_function(f):
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""" Function decorator that logs every call to that function.
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"""
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func_name = f.__name__
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lineno = f.func_code.co_firstlineno
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pathname = f.func_code.co_filename
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@wraps(f)
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def wrapped(*args, **kwargs):
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name = f.__module__
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logger = logging.getLogger(name)
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level = logging.DEBUG
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if logger.isEnabledFor(level):
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bound_args = getcallargs(f, *args, **kwargs)
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def format(value):
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r = str(value)
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if len(r) > 50:
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r = r[:50] + "..."
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return r
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func_args = [
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"%s=%s" % (k, format(v)) for k, v in bound_args.items()
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]
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msg_args = {
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"func_name": func_name,
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"args": ", ".join(func_args)
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}
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record = logging.LogRecord(
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name=name,
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level=level,
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pathname=pathname,
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lineno=lineno,
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msg="Invoked '%(func_name)s' with args: %(args)s",
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args=msg_args,
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exc_info=None
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)
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logger.handle(record)
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return f(*args, **kwargs)
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return wrapped
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