From 49af450b7abfbbb4bf29f17d34339029b2a424ca Mon Sep 17 00:00:00 2001
From: Igor Raits <i.gnatenko.brain@gmail.com>
Date: Sat, 12 Dec 2020 14:43:19 +0100
Subject: [PATCH] Unbundle decorator
Signed-off-by: Igor Raits <i.gnatenko.brain@gmail.com>
---
NOTICE | 3 -
prometheus_client/context_managers.py | 2 +-
prometheus_client/decorator.py | 427 --------------------------
setup.py | 1 +
tests/test_core.py | 2 +-
5 files changed, 3 insertions(+), 432 deletions(-)
delete mode 100644 prometheus_client/decorator.py
diff --git a/NOTICE b/NOTICE
index 59efb6c..0675ae1 100644
--- a/NOTICE
+++ b/NOTICE
@@ -1,5 +1,2 @@
Prometheus instrumentation library for Python applications
Copyright 2015 The Prometheus Authors
-
-This product bundles decorator 4.0.10 which is available under a "2-clause BSD"
-license. For details, see prometheus_client/decorator.py.
diff --git a/prometheus_client/context_managers.py b/prometheus_client/context_managers.py
index 2b271a7..d18400f 100644
--- a/prometheus_client/context_managers.py
+++ b/prometheus_client/context_managers.py
@@ -2,7 +2,7 @@ from __future__ import unicode_literals
from timeit import default_timer
-from .decorator import decorate
+from decorator import decorate
class ExceptionCounter(object):
diff --git a/prometheus_client/decorator.py b/prometheus_client/decorator.py
deleted file mode 100644
index 1ad2c97..0000000
--- a/prometheus_client/decorator.py
+++ /dev/null
@@ -1,427 +0,0 @@
-# ######################### LICENSE ############################ #
-
-# Copyright (c) 2005-2016, Michele Simionato
-# All rights reserved.
-
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-
-# Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# Redistributions in bytecode form must reproduce the above copyright
-# notice, this list of conditions and the following disclaimer in
-# the documentation and/or other materials provided with the
-# distribution.
-
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
-# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
-# TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
-# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
-# DAMAGE.
-
-"""
-Decorator module, see http://pypi.python.org/pypi/decorator
-for the documentation.
-"""
-from __future__ import print_function
-
-import collections
-import inspect
-import itertools
-import operator
-import re
-import sys
-
-__version__ = '4.0.10'
-
-if sys.version_info >= (3,):
- from inspect import getfullargspec
-
-
- def get_init(cls):
- return cls.__init__
-else:
- class getfullargspec(object):
- "A quick and dirty replacement for getfullargspec for Python 2.X"
-
- def __init__(self, f):
- self.args, self.varargs, self.varkw, self.defaults = \
- inspect.getargspec(f)
- self.kwonlyargs = []
- self.kwonlydefaults = None
-
- def __iter__(self):
- yield self.args
- yield self.varargs
- yield self.varkw
- yield self.defaults
-
- getargspec = inspect.getargspec
-
-
- def get_init(cls):
- return cls.__init__.__func__
-
-# getargspec has been deprecated in Python 3.5
-ArgSpec = collections.namedtuple(
- 'ArgSpec', 'args varargs varkw defaults')
-
-
-def getargspec(f):
- """A replacement for inspect.getargspec"""
- spec = getfullargspec(f)
- return ArgSpec(spec.args, spec.varargs, spec.varkw, spec.defaults)
-
-
-DEF = re.compile(r'\s*def\s*([_\w][_\w\d]*)\s*\(')
-
-
-# basic functionality
-class FunctionMaker(object):
- """
- An object with the ability to create functions with a given signature.
- It has attributes name, doc, module, signature, defaults, dict and
- methods update and make.
- """
-
- # Atomic get-and-increment provided by the GIL
- _compile_count = itertools.count()
-
- def __init__(self, func=None, name=None, signature=None,
- defaults=None, doc=None, module=None, funcdict=None):
- self.shortsignature = signature
- if func:
- # func can be a class or a callable, but not an instance method
- self.name = func.__name__
- if self.name == '<lambda>': # small hack for lambda functions
- self.name = '_lambda_'
- self.doc = func.__doc__
- self.module = func.__module__
- if inspect.isfunction(func):
- argspec = getfullargspec(func)
- self.annotations = getattr(func, '__annotations__', {})
- for a in ('args', 'varargs', 'varkw', 'defaults', 'kwonlyargs',
- 'kwonlydefaults'):
- setattr(self, a, getattr(argspec, a))
- for i, arg in enumerate(self.args):
- setattr(self, 'arg%d' % i, arg)
- if sys.version_info < (3,): # easy way
- self.shortsignature = self.signature = (
- inspect.formatargspec(
- formatvalue=lambda val: "", *argspec)[1:-1])
- else: # Python 3 way
- allargs = list(self.args)
- allshortargs = list(self.args)
- if self.varargs:
- allargs.append('*' + self.varargs)
- allshortargs.append('*' + self.varargs)
- elif self.kwonlyargs:
- allargs.append('*') # single star syntax
- for a in self.kwonlyargs:
- allargs.append('%s=None' % a)
- allshortargs.append('%s=%s' % (a, a))
- if self.varkw:
- allargs.append('**' + self.varkw)
- allshortargs.append('**' + self.varkw)
- self.signature = ', '.join(allargs)
- self.shortsignature = ', '.join(allshortargs)
- self.dict = func.__dict__.copy()
- # func=None happens when decorating a caller
- if name:
- self.name = name
- if signature is not None:
- self.signature = signature
- if defaults:
- self.defaults = defaults
- if doc:
- self.doc = doc
- if module:
- self.module = module
- if funcdict:
- self.dict = funcdict
- # check existence required attributes
- assert hasattr(self, 'name')
- if not hasattr(self, 'signature'):
- raise TypeError('You are decorating a non function: %s' % func)
-
- def update(self, func, **kw):
- "Update the signature of func with the data in self"
- func.__name__ = self.name
- func.__doc__ = getattr(self, 'doc', None)
- func.__dict__ = getattr(self, 'dict', {})
- func.__defaults__ = getattr(self, 'defaults', ())
- func.__kwdefaults__ = getattr(self, 'kwonlydefaults', None)
- func.__annotations__ = getattr(self, 'annotations', None)
- try:
- frame = sys._getframe(3)
- except AttributeError: # for IronPython and similar implementations
- callermodule = '?'
- else:
- callermodule = frame.f_globals.get('__name__', '?')
- func.__module__ = getattr(self, 'module', callermodule)
- func.__dict__.update(kw)
-
- def make(self, src_templ, evaldict=None, addsource=False, **attrs):
- "Make a new function from a given template and update the signature"
- src = src_templ % vars(self) # expand name and signature
- evaldict = evaldict or {}
- mo = DEF.match(src)
- if mo is None:
- raise SyntaxError('not a valid function template\n%s' % src)
- name = mo.group(1) # extract the function name
- names = set([name] + [arg.strip(' *') for arg in
- self.shortsignature.split(',')])
- for n in names:
- if n in ('_func_', '_call_'):
- raise NameError('%s is overridden in\n%s' % (n, src))
-
- if not src.endswith('\n'): # add a newline for old Pythons
- src += '\n'
-
- # Ensure each generated function has a unique filename for profilers
- # (such as cProfile) that depend on the tuple of (<filename>,
- # <definition line>, <function name>) being unique.
- filename = '<decorator-gen-%d>' % (next(self._compile_count),)
- try:
- code = compile(src, filename, 'single')
- exec(code, evaldict)
- except:
- print('Error in generated code:', file=sys.stderr)
- print(src, file=sys.stderr)
- raise
- func = evaldict[name]
- if addsource:
- attrs['__source__'] = src
- self.update(func, **attrs)
- return func
-
- @classmethod
- def create(cls, obj, body, evaldict, defaults=None,
- doc=None, module=None, addsource=True, **attrs):
- """
- Create a function from the strings name, signature and body.
- evaldict is the evaluation dictionary. If addsource is true an
- attribute __source__ is added to the result. The attributes attrs
- are added, if any.
- """
- if isinstance(obj, str): # "name(signature)"
- name, rest = obj.strip().split('(', 1)
- signature = rest[:-1] # strip a right parens
- func = None
- else: # a function
- name = None
- signature = None
- func = obj
- self = cls(func, name, signature, defaults, doc, module)
- ibody = '\n'.join(' ' + line for line in body.splitlines())
- return self.make('def %(name)s(%(signature)s):\n' + ibody,
- evaldict, addsource, **attrs)
-
-
-def decorate(func, caller):
- """
- decorate(func, caller) decorates a function using a caller.
- """
- evaldict = dict(_call_=caller, _func_=func)
- fun = FunctionMaker.create(
- func, "return _call_(_func_, %(shortsignature)s)",
- evaldict, __wrapped__=func)
- if hasattr(func, '__qualname__'):
- fun.__qualname__ = func.__qualname__
- return fun
-
-
-def decorator(caller, _func=None):
- """decorator(caller) converts a caller function into a decorator"""
- if _func is not None: # return a decorated function
- # this is obsolete behavior; you should use decorate instead
- return decorate(_func, caller)
- # else return a decorator function
- if inspect.isclass(caller):
- name = caller.__name__.lower()
- doc = 'decorator(%s) converts functions/generators into ' \
- 'factories of %s objects' % (caller.__name__, caller.__name__)
- elif inspect.isfunction(caller):
- if caller.__name__ == '<lambda>':
- name = '_lambda_'
- else:
- name = caller.__name__
- doc = caller.__doc__
- else: # assume caller is an object with a __call__ method
- name = caller.__class__.__name__.lower()
- doc = caller.__call__.__doc__
- evaldict = dict(_call_=caller, _decorate_=decorate)
- return FunctionMaker.create(
- '%s(func)' % name, 'return _decorate_(func, _call_)',
- evaldict, doc=doc, module=caller.__module__,
- __wrapped__=caller)
-
-
-# ####################### contextmanager ####################### #
-
-try: # Python >= 3.2
- from contextlib import _GeneratorContextManager
-except ImportError: # Python >= 2.5
- from contextlib import GeneratorContextManager as _GeneratorContextManager
-
-
-class ContextManager(_GeneratorContextManager):
- def __call__(self, func):
- """Context manager decorator"""
- return FunctionMaker.create(
- func, "with _self_: return _func_(%(shortsignature)s)",
- dict(_self_=self, _func_=func), __wrapped__=func)
-
-
-init = getfullargspec(_GeneratorContextManager.__init__)
-n_args = len(init.args)
-if n_args == 2 and not init.varargs: # (self, genobj) Python 2.7
- def __init__(self, g, *a, **k):
- return _GeneratorContextManager.__init__(self, g(*a, **k))
-
-
- ContextManager.__init__ = __init__
-elif n_args == 2 and init.varargs: # (self, gen, *a, **k) Python 3.4
- pass
-elif n_args == 4: # (self, gen, args, kwds) Python 3.5
- def __init__(self, g, *a, **k):
- return _GeneratorContextManager.__init__(self, g, a, k)
-
-
- ContextManager.__init__ = __init__
-
-contextmanager = decorator(ContextManager)
-
-
-# ############################ dispatch_on ############################ #
-
-def append(a, vancestors):
- """
- Append ``a`` to the list of the virtual ancestors, unless it is already
- included.
- """
- add = True
- for j, va in enumerate(vancestors):
- if issubclass(va, a):
- add = False
- break
- if issubclass(a, va):
- vancestors[j] = a
- add = False
- if add:
- vancestors.append(a)
-
-
-# inspired from simplegeneric by P.J. Eby and functools.singledispatch
-def dispatch_on(*dispatch_args):
- """
- Factory of decorators turning a function into a generic function
- dispatching on the given arguments.
- """
- assert dispatch_args, 'No dispatch args passed'
- dispatch_str = '(%s,)' % ', '.join(dispatch_args)
-
- def check(arguments, wrong=operator.ne, msg=''):
- """Make sure one passes the expected number of arguments"""
- if wrong(len(arguments), len(dispatch_args)):
- raise TypeError('Expected %d arguments, got %d%s' %
- (len(dispatch_args), len(arguments), msg))
-
- def gen_func_dec(func):
- """Decorator turning a function into a generic function"""
-
- # first check the dispatch arguments
- argset = set(getfullargspec(func).args)
- if not set(dispatch_args) <= argset:
- raise NameError('Unknown dispatch arguments %s' % dispatch_str)
-
- typemap = {}
-
- def vancestors(*types):
- """
- Get a list of sets of virtual ancestors for the given types
- """
- check(types)
- ras = [[] for _ in range(len(dispatch_args))]
- for types_ in typemap:
- for t, type_, ra in zip(types, types_, ras):
- if issubclass(t, type_) and type_ not in t.__mro__:
- append(type_, ra)
- return [set(ra) for ra in ras]
-
- def ancestors(*types):
- """
- Get a list of virtual MROs, one for each type
- """
- check(types)
- lists = []
- for t, vas in zip(types, vancestors(*types)):
- n_vas = len(vas)
- if n_vas > 1:
- raise RuntimeError(
- 'Ambiguous dispatch for %s: %s' % (t, vas))
- elif n_vas == 1:
- va, = vas
- mro = type('t', (t, va), {}).__mro__[1:]
- else:
- mro = t.__mro__
- lists.append(mro[:-1]) # discard t and object
- return lists
-
- def register(*types):
- """
- Decorator to register an implementation for the given types
- """
- check(types)
-
- def dec(f):
- check(getfullargspec(f).args, operator.lt, ' in ' + f.__name__)
- typemap[types] = f
- return f
-
- return dec
-
- def dispatch_info(*types):
- """
- An utility to introspect the dispatch algorithm
- """
- check(types)
- lst = []
- for anc in itertools.product(*ancestors(*types)):
- lst.append(tuple(a.__name__ for a in anc))
- return lst
-
- def _dispatch(dispatch_args, *args, **kw):
- types = tuple(type(arg) for arg in dispatch_args)
- try: # fast path
- f = typemap[types]
- except KeyError:
- pass
- else:
- return f(*args, **kw)
- combinations = itertools.product(*ancestors(*types))
- next(combinations) # the first one has been already tried
- for types_ in combinations:
- f = typemap.get(types_)
- if f is not None:
- return f(*args, **kw)
-
- # else call the default implementation
- return func(*args, **kw)
-
- return FunctionMaker.create(
- func, 'return _f_(%s, %%(shortsignature)s)' % dispatch_str,
- dict(_f_=_dispatch), register=register, default=func,
- typemap=typemap, vancestors=vancestors, ancestors=ancestors,
- dispatch_info=dispatch_info, __wrapped__=func)
-
- gen_func_dec.__name__ = 'dispatch_on' + dispatch_str
- return gen_func_dec
diff --git a/setup.py b/setup.py
index 0c80a56..7a434b2 100644
--- a/setup.py
+++ b/setup.py
@@ -27,6 +27,7 @@ setup(
'prometheus_client.openmetrics',
'prometheus_client.twisted',
],
+ install_requires=['decorator'],
extras_require={
'twisted': ['twisted'],
},
diff --git a/tests/test_core.py b/tests/test_core.py
index 5a81f12..d81f0a8 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -11,7 +11,7 @@ from prometheus_client.core import (
HistogramMetricFamily, Info, InfoMetricFamily, Metric, Sample,
StateSetMetricFamily, Summary, SummaryMetricFamily, UntypedMetricFamily,
)
-from prometheus_client.decorator import getargspec
+from inspect import getargspec
try:
import unittest2 as unittest
--
2.29.2