262 lines
10 KiB
Python
262 lines
10 KiB
Python
# Copyright (c) 2014 OpenStack Foundation.
|
|
#
|
|
# 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 re
|
|
|
|
from neutron_lib.hacking import translation_checks
|
|
|
|
# Guidelines for writing new hacking checks
|
|
#
|
|
# - Use only for Neutron specific tests. OpenStack general tests
|
|
# should be submitted to the common 'hacking' module.
|
|
# - Pick numbers in the range N5xx. Find the current test with
|
|
# the highest allocated number and then pick the next value.
|
|
# - Keep the test method code in the source file ordered based
|
|
# on the N5xx value.
|
|
# - List the new rule in the top level HACKING.rst file
|
|
# - Add test cases for each new rule to
|
|
# neutron_lib/tests/unit/hacking/test_checks.py
|
|
|
|
mutable_default_args = re.compile(r"^\s*def .+\((.+=\{\}|.+=\[\])")
|
|
|
|
namespace_imports_dot = re.compile(r"import[\s]+([\w]+)[.][^\s]+")
|
|
namespace_imports_from_dot = re.compile(r"from[\s]+([\w]+)[.]")
|
|
namespace_imports_from_root = re.compile(r"from[\s]+([\w]+)[\s]+import[\s]+")
|
|
contextlib_nested = re.compile(r"^\s*with (contextlib\.)?nested\(")
|
|
|
|
assert_equal_none_re = re.compile(
|
|
r"assertEqual\(.*?,\s+None\)(( |\t)*#.*)?$|assertEqual\(None,")
|
|
assert_is_none_re = re.compile(
|
|
r"assertIs(Not)?\(.*,\s+None\)(( |\t)*#.*)?$|assertIs(Not)?\(None,")
|
|
|
|
|
|
def use_jsonutils(logical_line, filename):
|
|
"""N521 - jsonutils must be used instead of json.
|
|
|
|
:param logical_line: The logical line to check.
|
|
:param filename: The file name where the logical line exists.
|
|
:returns: None if the logical line passes the check, otherwise a tuple
|
|
is yielded that contains the offending index in logical line and a
|
|
message describe the check validation failure.
|
|
"""
|
|
msg = "N521: jsonutils.%(fun)s must be used instead of json.%(fun)s"
|
|
|
|
# Some files in the tree are not meant to be run from inside Neutron
|
|
# itself, so we should not complain about them not using jsonutils
|
|
json_check_skipped_patterns = [
|
|
"neutron/plugins/ml2/drivers/openvswitch/agent/xenapi/etc/xapi.d/"
|
|
"plugins/netwrap",
|
|
]
|
|
|
|
for pattern in json_check_skipped_patterns:
|
|
if pattern in filename:
|
|
return
|
|
|
|
if "json." in logical_line:
|
|
json_funcs = ['dumps(', 'dump(', 'loads(', 'load(']
|
|
for f in json_funcs:
|
|
pos = logical_line.find('json.%s' % f)
|
|
if pos != -1:
|
|
yield (pos, msg % {'fun': f[:-1]})
|
|
|
|
|
|
def _check_imports(regex, submatch, logical_line):
|
|
m = re.match(regex, logical_line)
|
|
if m and m.group(1) == submatch:
|
|
return True
|
|
|
|
|
|
def _check_namespace_imports(failure_code, namespace, new_ns, logical_line,
|
|
message_override=None):
|
|
if message_override is not None:
|
|
msg_o = "%s: %s" % (failure_code, message_override)
|
|
else:
|
|
msg_o = None
|
|
|
|
if _check_imports(namespace_imports_from_dot, namespace, logical_line):
|
|
msg = ("%s: '%s' must be used instead of '%s'.") % (
|
|
failure_code,
|
|
logical_line.replace('%s.' % namespace, new_ns),
|
|
logical_line)
|
|
return (0, msg_o or msg)
|
|
elif _check_imports(namespace_imports_from_root, namespace, logical_line):
|
|
msg = ("%s: '%s' must be used instead of '%s'.") % (
|
|
failure_code,
|
|
logical_line.replace(
|
|
'from %s import ' % namespace, 'import %s' % new_ns),
|
|
logical_line)
|
|
return (0, msg_o or msg)
|
|
elif _check_imports(namespace_imports_dot, namespace, logical_line):
|
|
msg = ("%s: '%s' must be used instead of '%s'.") % (
|
|
failure_code,
|
|
logical_line.replace('import', 'from').replace('.', ' import '),
|
|
logical_line)
|
|
return (0, msg_o or msg)
|
|
|
|
|
|
def check_no_contextlib_nested(logical_line, filename):
|
|
"""N524 - Use of contextlib.nested is deprecated.
|
|
|
|
:param logical_line: The logical line to check.
|
|
:param filename: The file name where the logical line exists.
|
|
:returns: None if the logical line passes the check, otherwise a tuple
|
|
is yielded that contains the offending index in logical line and a
|
|
message describe the check validation failure.
|
|
"""
|
|
msg = ("N524: contextlib.nested is deprecated. With Python 2.7 and later "
|
|
"the with-statement supports multiple nested objects. See https://"
|
|
"docs.python.org/2/library/contextlib.html#contextlib.nested for "
|
|
"more information.")
|
|
|
|
if contextlib_nested.match(logical_line):
|
|
yield(0, msg)
|
|
|
|
|
|
def check_python3_xrange(logical_line):
|
|
"""N525 - Do not use xrange.
|
|
|
|
:param logical_line: The logical line to check.
|
|
:returns: None if the logical line passes the check, otherwise a tuple
|
|
is yielded that contains the offending index in logical line and a
|
|
message describe the check validation failure.
|
|
"""
|
|
if re.search(r"\bxrange\s*\(", logical_line):
|
|
yield(0, "N525: Do not use xrange. Use range, or six.moves.range for "
|
|
"large loops.")
|
|
|
|
|
|
def check_no_basestring(logical_line):
|
|
"""N526 - basestring is not Python3-compatible.
|
|
|
|
:param logical_line: The logical line to check.
|
|
:returns: None if the logical line passes the check, otherwise a tuple
|
|
is yielded that contains the offending index in logical line and a
|
|
message describe the check validation failure.
|
|
"""
|
|
if re.search(r"\bbasestring\b", logical_line):
|
|
msg = ("N526: basestring is not Python3-compatible, use "
|
|
"six.string_types instead.")
|
|
yield(0, msg)
|
|
|
|
|
|
def check_python3_no_iteritems(logical_line):
|
|
"""N527 - Use dict.items() instead of dict.iteritems().
|
|
|
|
:param logical_line: The logical line to check.
|
|
:returns: None if the logical line passes the check, otherwise a tuple
|
|
is yielded that contains the offending index in logical line and a
|
|
message describe the check validation failure.
|
|
"""
|
|
if re.search(r".*\.iteritems\(\)", logical_line):
|
|
msg = ("N527: Use dict.items() instead of dict.iteritems() to be "
|
|
"compatible with both Python 2 and Python 3. In Python 2, "
|
|
"dict.items() may be inefficient for very large dictionaries. "
|
|
"If you can prove that you need the optimization of an "
|
|
"iterator for Python 2, then you can use six.iteritems(dict).")
|
|
yield(0, msg)
|
|
|
|
|
|
def no_mutable_default_args(logical_line):
|
|
"""N529 - Method's default argument shouldn't be mutable.
|
|
|
|
:param logical_line: The logical line to check.
|
|
:returns: None if the logical line passes the check, otherwise a tuple
|
|
is yielded that contains the offending index in logical line and a
|
|
message describe the check validation failure.
|
|
"""
|
|
msg = "N529: Method's default argument shouldn't be mutable!"
|
|
if mutable_default_args.match(logical_line):
|
|
yield (0, msg)
|
|
|
|
|
|
# Chances are that most projects will need to put an ignore on this rule
|
|
# until they can fully migrate to the lib.
|
|
|
|
def check_neutron_namespace_imports(logical_line):
|
|
"""N530 - Direct neutron imports not allowed.
|
|
|
|
:param logical_line: The logical line to check.
|
|
:returns: None if the logical line passes the check, otherwise a tuple
|
|
is yielded that contains the offending index in logical line and a
|
|
message describe the check validation failure.
|
|
"""
|
|
x = _check_namespace_imports(
|
|
'N530', 'neutron', 'neutron_lib.', logical_line,
|
|
message_override="direct neutron imports not allowed")
|
|
if x is not None:
|
|
yield x
|
|
|
|
|
|
def check_no_eventlet_imports(logical_line):
|
|
"""N535 - Usage of Python eventlet module not allowed.
|
|
|
|
:param logical_line: The logical line to check.
|
|
:returns: None if the logical line passes the check, otherwise a tuple
|
|
is yielded that contains the offending index in logical line and a
|
|
message describe the check validation failure.
|
|
"""
|
|
if re.match(r'(import|from)\s+[(]?eventlet', logical_line):
|
|
msg = 'N535: Usage of Python eventlet module not allowed'
|
|
yield logical_line.index('eventlet'), msg
|
|
|
|
|
|
def assert_equal_none(logical_line):
|
|
"""N536 - Use assertIsNone."""
|
|
if assert_equal_none_re.search(logical_line):
|
|
msg = ("N536: Use assertIsNone rather than assertEqual "
|
|
"to check for None values")
|
|
yield logical_line.index('assert'), msg
|
|
|
|
if assert_is_none_re.search(logical_line):
|
|
msg = ("N536: Use assertIsNone or assertIsNotNone rather than "
|
|
"assertIs or assertIsNone to check for None values.")
|
|
yield logical_line.index('assert'), msg
|
|
|
|
|
|
def factory(register):
|
|
"""Hacking check factory for neutron-lib adopter compliant checks.
|
|
|
|
Hacking check factory for use with tox.ini. This factory registers all
|
|
neutron-lib adopter checks consumers should seek to comply with.
|
|
|
|
:param register: The function to register the check functions with.
|
|
:returns: None.
|
|
"""
|
|
register(use_jsonutils)
|
|
register(check_no_contextlib_nested)
|
|
register(check_python3_xrange)
|
|
register(check_no_basestring)
|
|
register(check_python3_no_iteritems)
|
|
register(no_mutable_default_args)
|
|
register(check_neutron_namespace_imports)
|
|
register(translation_checks.no_translate_logs)
|
|
register(translation_checks.check_log_warn_deprecated)
|
|
register(translation_checks.check_raised_localized_exceptions)
|
|
register(assert_equal_none)
|
|
|
|
|
|
def _neutron_lib_factory(register):
|
|
"""Hacking check factory for neutron-lib internal project checks.
|
|
|
|
Hacking check factory for use with tox.ini. This factory registers all
|
|
checks that are run with the neutron-lib project itself.
|
|
|
|
:param register: The function to register the check functions with.
|
|
:returns: None.
|
|
"""
|
|
factory(register)
|
|
|
|
# neutron-lib project specific checks below
|
|
register(check_no_eventlet_imports)
|