117544f62b
The repo is Python 3 now, so update hacking to version 3.0 which supports Python 3. Fix problems found. Update local hacking checks for new flake8. Note that the repo has been running hacking 2 for some time due to uncapped setup, and thus fixes are needed for N350 - the uncapped setup disabled the local hacking rules. They are now enabled again. Change-Id: I25e5201933f65ba4d3045e6445f0e6419ea57f3e
627 lines
21 KiB
Python
627 lines
21 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Guidelines for writing new hacking checks
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- Use only for Rally specific tests. OpenStack general tests
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should be submitted to the common 'hacking' module.
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- Pick numbers in the range N3xx. Find the current test with
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the highest allocated number and then pick the next value.
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- Keep the test method code in the source file ordered based
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on the N3xx value.
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- List the new rule in the top level HACKING.rst file
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- Add test cases for each new rule to tests/unit/test_hacking.py
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"""
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import functools
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import re
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import tokenize
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from hacking import core
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re_assert_equal_end_with_true_or_false = re.compile(
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r"assertEqual\(.*?, \s+(True|False)\)$")
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re_assert_equal_start_with_true_or_false = re.compile(
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r"assertEqual\((True|False),")
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re_assert_true_instance = re.compile(
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r"(.)*assertTrue\(isinstance\((\w|\.|\'|\"|\[|\])+, "
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r"(\w|\.|\'|\"|\[|\])+\)\)")
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re_assert_equal_type = re.compile(
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r"(.)*assertEqual\(type\((\w|\.|\'|\"|\[|\])+\), "
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r"(\w|\.|\'|\"|\[|\])+\)")
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re_assert_equal_end_with_none = re.compile(r"assertEqual\(.*?,\s+None\)$")
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re_assert_equal_start_with_none = re.compile(r"assertEqual\(None,")
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re_assert_not_equal_end_with_none = re.compile(
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r"assertNotEqual\(.*?,\s+None\)$")
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re_assert_not_equal_start_with_none = re.compile(r"assertNotEqual\(None,")
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re_assert_true_false_with_in_or_not_in = re.compile(
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r"assert(True|False)\("
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r"(\w|[][.'\"])+( not)? in (\w|[][.'\",])+(, .*)?\)")
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re_assert_true_false_with_in_or_not_in_spaces = re.compile(
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r"assert(True|False)\((\w|[][.'\"])+( not)? in [\[|'|\"](\w|[][.'\", ])+"
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r"[\[|'|\"](, .*)?\)")
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re_assert_equal_in_end_with_true_or_false = re.compile(
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r"assertEqual\((\w|[][.'\"])+( not)? in (\w|[][.'\", ])+, (True|False)\)")
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re_assert_equal_in_start_with_true_or_false = re.compile(
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r"assertEqual\((True|False), (\w|[][.'\"])+( not)? in (\w|[][.'\", ])+\)")
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re_no_construct_dict = re.compile(
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r"\sdict\(\)")
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re_no_construct_list = re.compile(
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r"\slist\(\)")
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re_str_format = re.compile(r"""
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% # start of specifier
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\(([^)]+)\) # mapping key, in group 1
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[#0 +\-]? # optional conversion flag
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(?:-?\d*)? # optional minimum field width
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(?:\.\d*)? # optional precision
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[hLl]? # optional length modifier
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[A-z%] # conversion modifier
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""", re.X)
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re_raises = re.compile(
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r"\s:raise[^s] *.*$|\s:raises *:.*$|\s:raises *[^:]+$")
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re_db_import = re.compile(r"^from rally.common import db")
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re_objects_import = re.compile(r"^from rally.common import objects")
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re_old_type_class = re.compile(r"^\s*class \w+(\(\))?:")
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re_datetime_alias = re.compile(r"^(from|import) datetime(?!\s+as\s+dt$)")
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re_log_warn = re.compile(r"(.)*LOG\.(warn)\(\s*('|\"|_)")
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def skip_ignored_lines(func):
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@functools.wraps(func)
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def wrapper(physical_line, logical_line, filename):
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line = physical_line.strip()
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if not line or line.startswith("#") or line.endswith("# noqa"):
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return
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try:
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for res in func(physical_line, logical_line, filename):
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yield res
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except StopIteration:
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return
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return wrapper
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def _parse_assert_mock_str(line):
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point = line.find(".assert_")
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if point == -1:
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point = line.find(".called_once_with(")
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if point != -1:
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end_pos = line[point:].find("(") + point
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return point, line[point + 1: end_pos], line[: point]
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else:
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return None, None, None
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@core.flake8ext
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@skip_ignored_lines
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def check_assert_methods_from_mock(physical_line, logical_line, filename):
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"""Ensure that ``assert_*`` methods from ``mock`` library is used correctly
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N301 - base error number
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N302 - related to nonexistent "assert_called"
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N303 - related to nonexistent "assert_called_once"
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N304 - related to nonexistent "called_once_with"
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"""
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correct_names = ["assert_any_call", "assert_called_once_with",
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"assert_called_with", "assert_has_calls",
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"assert_not_called"]
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ignored_files = ["./tests/unit/test_hacking.py"]
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if filename.startswith("./tests") and filename not in ignored_files:
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pos, method_name, obj_name = _parse_assert_mock_str(logical_line)
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if pos:
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if method_name not in correct_names:
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error_number = "N301"
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msg = ("%(error_number)s:'%(method)s' is not present in `mock`"
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" library. %(custom_msg)s For more details, visit "
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"http://www.voidspace.org.uk/python/mock/ .")
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if method_name == "assert_called":
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error_number = "N302"
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custom_msg = ("Maybe, you should try to use "
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"'assertTrue(%s.called)' instead." %
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obj_name)
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elif method_name == "assert_called_once":
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# For more details, see a bug in Rally:
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# https://bugs.launchpad.net/rally/+bug/1305991
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error_number = "N303"
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custom_msg = ("Maybe, you should try to use "
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"'assertEqual(1, %s.call_count)' "
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"or '%s.assert_called_once_with()'"
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" instead." % (obj_name, obj_name))
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elif method_name == "called_once_with":
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error_number = "N304"
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custom_msg = ("Maybe, you should try to use "
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"'%s.assert_called_once_with()'"
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" instead." % obj_name)
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else:
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custom_msg = ("Correct 'assert_*' methods: '%s'."
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% "', '".join(correct_names))
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yield (pos, msg % {
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"error_number": error_number,
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"method": method_name,
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"custom_msg": custom_msg})
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@core.flake8ext
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@skip_ignored_lines
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def check_import_of_logging(physical_line, logical_line, filename):
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"""Check correctness import of logging module
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N310
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"""
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excluded_files = ["./rally/common/logging.py",
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"./tests/unit/test_logging.py",
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"./tests/ci/rally_verify.py",
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"./tests/ci/sync_requirements.py"]
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forbidden_imports = ["from oslo_log",
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"import oslo_log",
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"import logging"]
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if filename not in excluded_files:
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for forbidden_import in forbidden_imports:
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if logical_line.startswith(forbidden_import):
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yield (0, "N310 Wrong module for logging is imported. Please "
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"use `rally.common.logging` instead.")
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@core.flake8ext
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@skip_ignored_lines
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def check_import_of_config(physical_line, logical_line, filename):
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"""Check correctness import of config module
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N311
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"""
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excluded_files = ["./rally/common/cfg.py"]
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forbidden_imports = ["from oslo_config",
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"import oslo_config"]
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if filename not in excluded_files:
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for forbidden_import in forbidden_imports:
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if logical_line.startswith(forbidden_import):
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yield (0, "N311 Wrong module for config is imported. Please "
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"use `rally.common.cfg` instead.")
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@core.flake8ext
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@skip_ignored_lines
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def no_use_conf_debug_check(physical_line, logical_line, filename):
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"""Check for "cfg.CONF.debug"
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Rally has two DEBUG level:
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- Full DEBUG, which include all debug-messages from all OpenStack services
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- Rally DEBUG, which include only Rally debug-messages
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so we should use custom check to know debug-mode, instead of CONF.debug
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N312
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"""
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excluded_files = ["./rally/common/logging.py"]
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point = logical_line.find("CONF.debug")
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if point != -1 and filename not in excluded_files:
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yield (point, "N312 Don't use `CONF.debug`. "
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"Function `rally.common.logging.is_debug` "
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"should be used instead.")
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@core.flake8ext
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@skip_ignored_lines
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def assert_true_instance(physical_line, logical_line, filename):
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"""Check for assertTrue(isinstance(a, b)) sentences
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N320
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"""
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if re_assert_true_instance.match(logical_line):
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yield (0, "N320 assertTrue(isinstance(a, b)) sentences not allowed, "
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"you should use assertIsInstance(a, b) instead.")
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@core.flake8ext
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@skip_ignored_lines
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def assert_equal_type(physical_line, logical_line, filename):
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"""Check for assertEqual(type(A), B) sentences
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N321
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"""
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if re_assert_equal_type.match(logical_line):
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yield (0, "N321 assertEqual(type(A), B) sentences not allowed, "
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"you should use assertIsInstance(a, b) instead.")
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@core.flake8ext
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@skip_ignored_lines
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def assert_equal_none(physical_line, logical_line, filename):
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"""Check for assertEqual(A, None) or assertEqual(None, A) sentences
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N322
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"""
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res = (re_assert_equal_start_with_none.search(logical_line)
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or re_assert_equal_end_with_none.search(logical_line))
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if res:
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yield (0, "N322 assertEqual(A, None) or assertEqual(None, A) "
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"sentences not allowed, you should use assertIsNone(A) "
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"instead.")
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@core.flake8ext
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@skip_ignored_lines
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def assert_true_or_false_with_in(physical_line, logical_line, filename):
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"""Check assertTrue/False(A in/not in B) with collection contents
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Check for assertTrue/False(A in B), assertTrue/False(A not in B),
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assertTrue/False(A in B, message) or assertTrue/False(A not in B, message)
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sentences.
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N323
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"""
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res = (re_assert_true_false_with_in_or_not_in.search(logical_line)
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or re_assert_true_false_with_in_or_not_in_spaces.search(
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logical_line))
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if res:
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yield (0, "N323 assertTrue/assertFalse(A in/not in B)sentences not "
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"allowed, you should use assertIn(A, B) or assertNotIn(A, B)"
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" instead.")
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@core.flake8ext
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@skip_ignored_lines
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def assert_equal_in(physical_line, logical_line, filename):
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"""Check assertEqual(A in/not in B, True/False) with collection contents
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Check for assertEqual(A in B, True/False), assertEqual(True/False, A in B),
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assertEqual(A not in B, True/False) or assertEqual(True/False, A not in B)
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sentences.
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N324
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"""
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res = (re_assert_equal_in_end_with_true_or_false.search(logical_line)
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or re_assert_equal_in_start_with_true_or_false.search(logical_line))
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if res:
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yield (0, "N324: Use assertIn/NotIn(A, B) rather than "
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"assertEqual(A in/not in B, True/False) when checking "
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"collection contents.")
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@core.flake8ext
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@skip_ignored_lines
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def assert_not_equal_none(physical_line, logical_line, filename):
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"""Check for assertNotEqual(A, None) or assertEqual(None, A) sentences
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N325
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"""
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res = (re_assert_not_equal_start_with_none.search(logical_line)
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or re_assert_not_equal_end_with_none.search(logical_line))
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if res:
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yield (0, "N325 assertNotEqual(A, None) or assertNotEqual(None, A) "
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"sentences not allowed, you should use assertIsNotNone(A) "
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"instead.")
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@core.flake8ext
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@skip_ignored_lines
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def assert_equal_true_or_false(physical_line, logical_line, filename):
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"""Check for assertEqual(A, True/False) sentences
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Check for assertEqual(A, True/False) sentences or
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assertEqual(True/False, A)
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N326
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"""
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res = (re_assert_equal_end_with_true_or_false.search(logical_line)
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or re_assert_equal_start_with_true_or_false.search(logical_line))
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if res:
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yield (0, "N326 assertEqual(A, True/False) or "
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"assertEqual(True/False, A) sentences not allowed,"
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"you should use assertTrue(A) or assertFalse(A) instead.")
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@core.flake8ext
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@skip_ignored_lines
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def check_no_direct_rally_objects_import(physical_line, logical_line,
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filename):
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"""Check if rally.common.objects are properly imported.
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If you import "from rally.common import objects" you are able to use
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objects directly like objects.Task.
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N340
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"""
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if filename == "./rally/common/objects/__init__.py":
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return
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if filename == "./rally/common/objects/endpoint.py":
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return
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if (logical_line.startswith("from rally.common.objects")
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or logical_line.startswith("import rally.common.objects.")):
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yield (0, "N340: Import objects module:"
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"`from rally.common import objects`. "
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"After that you can use directly objects e.g. objects.Task")
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@core.flake8ext
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@skip_ignored_lines
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def check_no_oslo_deprecated_import(physical_line, logical_line, filename):
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"""Check if oslo.foo packages are not imported instead of oslo_foo ones.
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Libraries from oslo.foo namespace are deprecated because of namespace
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problems.
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N341
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"""
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if (logical_line.startswith("from oslo.")
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or logical_line.startswith("import oslo.")):
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yield (0, "N341: Import oslo module: `from oslo_xyz import ...`. "
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"The oslo.xyz namespace was deprecated, use oslo_xyz "
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"instead")
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@core.flake8ext
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@skip_ignored_lines
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def check_quotes(physical_line, logical_line, filename):
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"""Check that single quotation marks are not used
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N350
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"""
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in_string = False
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in_multiline_string = False
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single_quotas_are_used = False
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check_tripple = (
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lambda line, i, char: (
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i + 2 < len(line)
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and (char == line[i] == line[i + 1] == line[i + 2])
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)
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)
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i = 0
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while i < len(logical_line):
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char = logical_line[i]
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if in_string:
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if char == "\"":
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in_string = False
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if char == "\\":
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i += 1 # ignore next char
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elif in_multiline_string:
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if check_tripple(logical_line, i, "\""):
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i += 2 # skip next 2 chars
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in_multiline_string = False
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elif char == "#":
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break
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elif char == "'":
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single_quotas_are_used = True
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break
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elif char == "\"":
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if check_tripple(logical_line, i, "\""):
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in_multiline_string = True
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i += 3
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continue
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in_string = True
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i += 1
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if single_quotas_are_used:
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yield i, "N350 Remove Single quotes"
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@core.flake8ext
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@skip_ignored_lines
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def check_no_constructor_data_struct(physical_line, logical_line, filename):
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"""Check that data structs (lists, dicts) are declared using literals
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N351
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"""
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match = re_no_construct_dict.search(logical_line)
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if match:
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yield 0, "N351 Remove dict() construct and use literal {}"
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match = re_no_construct_list.search(logical_line)
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if match:
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yield 0, "N351 Remove list() construct and use literal []"
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@core.flake8ext
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def check_dict_formatting_in_string(logical_line, tokens):
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"""Check that strings do not use dict-formatting with a single replacement
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N352
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"""
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# NOTE(stpierre): Can't use @skip_ignored_lines here because it's
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# a stupid decorator that only works on functions that take
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# (logical_line, filename) as arguments.
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if (not logical_line
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or logical_line.startswith("#")
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or logical_line.endswith("# noqa")):
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return
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current_string = ""
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in_string = False
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for token_type, text, start, end, line in tokens:
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if token_type == tokenize.STRING:
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if not in_string:
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current_string = ""
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in_string = True
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current_string += text.strip("\"")
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elif token_type == tokenize.OP:
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if not current_string:
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continue
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# NOTE(stpierre): The string formatting operator % has
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# lower precedence than +, so we assume that the logical
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# string has concluded whenever we hit an operator of any
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# sort. (Most operators don't work for strings anyway.)
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# Some string operators do have higher precedence than %,
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# though, so you can technically trick this check by doing
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# things like:
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#
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# "%(foo)s" * 1 % {"foo": 1}
|
|
# "%(foo)s"[:] % {"foo": 1}
|
|
#
|
|
# It also will produce false positives if you use explicit
|
|
# parenthesized addition for two strings instead of
|
|
# concatenation by juxtaposition, e.g.:
|
|
#
|
|
# ("%(foo)s" + "%(bar)s") % vals
|
|
#
|
|
# But if you do any of those things, then you deserve all
|
|
# of the horrible things that happen to you, and probably
|
|
# many more.
|
|
in_string = False
|
|
if text == "%":
|
|
format_keys = set()
|
|
for match in re_str_format.finditer(current_string):
|
|
format_keys.add(match.group(1))
|
|
if len(format_keys) == 1:
|
|
yield (0,
|
|
"N353 Do not use mapping key string formatting "
|
|
"with a single key")
|
|
if text != ")":
|
|
# NOTE(stpierre): You can have a parenthesized string
|
|
# followed by %, so a closing paren doesn't obviate
|
|
# the possibility for a substitution operator like
|
|
# every other operator does.
|
|
current_string = ""
|
|
elif token_type in (tokenize.NL, tokenize.COMMENT):
|
|
continue
|
|
else:
|
|
in_string = False
|
|
if token_type == tokenize.NEWLINE:
|
|
current_string = ""
|
|
|
|
|
|
@core.flake8ext
|
|
@skip_ignored_lines
|
|
def check_using_unicode(physical_line, logical_line, filename):
|
|
"""Check crosspython unicode usage
|
|
|
|
N353
|
|
"""
|
|
|
|
if re.search(r"\bunicode\(", logical_line):
|
|
yield (0, "N353 'unicode' function is absent in python3. Please "
|
|
"use 'str' instead.")
|
|
|
|
|
|
@core.flake8ext
|
|
def check_raises(physical_line, logical_line, filename):
|
|
"""Check raises usage
|
|
|
|
N354
|
|
"""
|
|
|
|
ignored_files = ["./tests/unit/test_hacking.py",
|
|
"./tests/hacking/checks.py"]
|
|
if filename not in ignored_files:
|
|
if re_raises.search(physical_line):
|
|
yield (0, "N354 ':Please use ':raises Exception: conditions' "
|
|
"in docstrings.")
|
|
|
|
|
|
@core.flake8ext
|
|
@skip_ignored_lines
|
|
def check_old_type_class(physical_line, logical_line, filename):
|
|
"""Use new-style Python classes
|
|
|
|
N355
|
|
"""
|
|
|
|
if re_old_type_class.search(logical_line):
|
|
yield (0, "N355 This class does not inherit from anything and thus "
|
|
"will be an old-style class by default. Try to inherit from "
|
|
"``object`` or another new-style class.")
|
|
|
|
|
|
@core.flake8ext
|
|
@skip_ignored_lines
|
|
def check_datetime_alias(physical_line, logical_line, filename):
|
|
"""Ensure using ``dt`` as alias for ``datetime``
|
|
|
|
N356
|
|
"""
|
|
if re_datetime_alias.search(logical_line):
|
|
yield 0, "N356 Please use ``dt`` as alias for ``datetime``."
|
|
|
|
|
|
@core.flake8ext
|
|
@skip_ignored_lines
|
|
def check_db_imports_in_cli(physical_line, logical_line, filename):
|
|
"""Ensure that CLI modules do not use ``rally.common.db``
|
|
|
|
N360
|
|
"""
|
|
if (not filename.startswith("./rally/cli")
|
|
or filename == "./rally/cli/commands/db.py"):
|
|
return
|
|
if re_db_import.search(logical_line):
|
|
yield (0, "N360 CLI modules do not allow to work with "
|
|
"`rally.common.db``.")
|
|
|
|
|
|
@core.flake8ext
|
|
@skip_ignored_lines
|
|
def check_objects_imports_in_cli(physical_line, logical_line, filename):
|
|
"""Ensure that CLI modules do not use ``rally.common.objects``
|
|
|
|
N361
|
|
"""
|
|
if not filename.startswith("./rally/cli"):
|
|
return
|
|
if re_objects_import.search(logical_line):
|
|
yield (0, "N361 CLI modules do not allow to work with "
|
|
"`rally.common.objects``.")
|
|
|
|
|
|
@core.flake8ext
|
|
@skip_ignored_lines
|
|
def check_log_warn(physical_line, logical_line, filename):
|
|
if re_log_warn.search(logical_line):
|
|
yield 0, "N313 LOG.warn is deprecated, please use LOG.warning"
|
|
|
|
|
|
@core.flake8ext
|
|
@skip_ignored_lines
|
|
def check_opts_import_path(physical_line, logical_line, filename):
|
|
"""Ensure that we load opts from correct paths only
|
|
|
|
N342
|
|
"""
|
|
excluded_files = ["./rally/task/engine.py",
|
|
"./rally/task/context.py",
|
|
"./rally/task/scenario.py",
|
|
"./rally/common/opts.py"]
|
|
forbidden_methods = [r".register_opts("]
|
|
|
|
if filename not in excluded_files:
|
|
for forbidden_method in forbidden_methods:
|
|
if logical_line.find(forbidden_method) != -1:
|
|
yield (0, "N342 All options should be loaded from correct "
|
|
"paths only. For 'openstack' "
|
|
"its './rally/plugin/openstack/cfg'")
|