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# -*- coding: utf-8 -*-
# Copyright 2014-2016 OpenMarket Ltd
#
# 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.
import inspect
import logging
import time
from functools import wraps
from inspect import getcallargs
_TIME_FUNC_ID = 0
def _log_debug_as_f(f, msg, msg_args):
name = f.__module__
logger = logging.getLogger(name)
if logger.isEnabledFor(logging.DEBUG):
lineno = f.func_code.co_firstlineno
pathname = f.func_code.co_filename
record = logging.LogRecord(
name=name,
level=logging.DEBUG,
pathname=pathname,
lineno=lineno,
msg=msg,
args=msg_args,
exc_info=None
)
logger.handle(record)
def log_function(f):
""" Function decorator that logs every call to that function.
"""
func_name = f.__name__
@wraps(f)
def wrapped(*args, **kwargs):
name = f.__module__
logger = logging.getLogger(name)
level = logging.DEBUG
if logger.isEnabledFor(level):
bound_args = getcallargs(f, *args, **kwargs)
def format(value):
r = str(value)
if len(r) > 50:
r = r[:50] + "..."
return r
func_args = [
"%s=%s" % (k, format(v)) for k, v in bound_args.items()
]
msg_args = {
"func_name": func_name,
"args": ", ".join(func_args)
}
_log_debug_as_f(
f,
"Invoked '%(func_name)s' with args: %(args)s",
msg_args
)
return f(*args, **kwargs)
wrapped.__name__ = func_name
return wrapped
def time_function(f):
func_name = f.__name__
@wraps(f)
def wrapped(*args, **kwargs):
global _TIME_FUNC_ID
id = _TIME_FUNC_ID
_TIME_FUNC_ID += 1
start = time.clock()
try:
_log_debug_as_f(
f,
"[FUNC START] {%s-%d}",
(func_name, id),
)
r = f(*args, **kwargs)
finally:
end = time.clock()
_log_debug_as_f(
f,
"[FUNC END] {%s-%d} %.3f sec",
(func_name, id, end - start,),
)
return r
return wrapped
def trace_function(f):
func_name = f.__name__
linenum = f.func_code.co_firstlineno
pathname = f.func_code.co_filename
@wraps(f)
def wrapped(*args, **kwargs):
name = f.__module__
logger = logging.getLogger(name)
level = logging.DEBUG
s = inspect.currentframe().f_back
to_print = [
"\t%s:%s %s. Args: args=%s, kwargs=%s" % (
pathname, linenum, func_name, args, kwargs
)
]
while s:
if True or s.f_globals["__name__"].startswith("synapse"):
filename, lineno, function, _, _ = inspect.getframeinfo(s)
args_string = inspect.formatargvalues(*inspect.getargvalues(s))
to_print.append(
"\t%s:%d %s. Args: %s" % (
filename, lineno, function, args_string
)
)
s = s.f_back
msg = "\nTraceback for %s:\n" % (func_name,) + "\n".join(to_print)
record = logging.LogRecord(
name=name,
level=level,
pathname=pathname,
lineno=lineno,
msg=msg,
args=None,
exc_info=None
)
logger.handle(record)
return f(*args, **kwargs)
wrapped.__name__ = func_name
return wrapped
def get_previous_frames():
s = inspect.currentframe().f_back.f_back
to_return = []
while s:
if s.f_globals["__name__"].startswith("synapse"):
filename, lineno, function, _, _ = inspect.getframeinfo(s)
args_string = inspect.formatargvalues(*inspect.getargvalues(s))
to_return.append("{{ %s:%d %s - Args: %s }}" % (
filename, lineno, function, args_string
))
s = s.f_back
return ", ". join(to_return)
def get_previous_frame(ignore=[]):
s = inspect.currentframe().f_back.f_back
while s:
if s.f_globals["__name__"].startswith("synapse"):
if not any(s.f_globals["__name__"].startswith(ig) for ig in ignore):
filename, lineno, function, _, _ = inspect.getframeinfo(s)
args_string = inspect.formatargvalues(*inspect.getargvalues(s))
return "{{ %s:%d %s - Args: %s }}" % (
filename, lineno, function, args_string
)
s = s.f_back
return None
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